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2007 2008 2009 2010 2012

Editorial Board

Prof. Colin Fyfe (UK),

Prof. Roy Perryman (UK), 

Prof. Stephen Dodds (UK)

Prof. Marc A. Rosen (Canada),


Prof. Kun Gao (China), 


Prof.  Francesco Muzi (Italy),

Prof. T.Panagopoulos (Portugal),

Prof. Van Den Toorn (Netherlands),

Prof. J.Krope (Slovenia),

Prof. T.Pelikan (USA),

Prof. G.Tsypskin (Russia),  

Prof. I.Sandberg (USA),

Prof. B.McCartin (USA),

Prof. M.Sheriff (USA),

Prof. N.Markatos (Greece),

Prof. Ming Li (China),

Prof. M.Itskov (Germany)



Topics

All aspects of cybernetics, applied systems theory in real life, development, sustainability, ecosystems, applications of civil engineering, ecology, geoscience etc...are covered. It appears quarterly. Special Issues are specially encouraged.

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Previous Volumes

2007

Issue 1, Volume 5, 2011

Vibration Analysis of Tread Brake Block in the Brake Dynamometer for the High Speed Train
by Min-Soo Kim

Abstract: This paper deals with the frequency analysis of the abnormal vibration in the specific speed range when the tread brake test is applied in the brake dynamometer. Generally brake system of railway vehicles has a crucial role for the safety as well as riding quality of passengers. And dynamometer tests are widely used to evaluate the friction and wear performance of railroad friction composition brake shoes including the emergence brake, continuous brake, and so on. Experiments on the brake dynamometer for the high speed train are provided to illustrate the frequency analysis of the abnormal vibration in vehicle speed at 140 [km/h] and 70 [km/h] under the 920 [mm] wheel diameter using the 3-axis accelerometers.
Keywords:
Tread Brake, Brake Dynamometer, Railway Vehicle, 3-Axis Accelerometers.
Full Paper, pp. 1-8

 

Remote Sensing of the Lateral Force for the Scaled Active Steering Railway Vehicle
by Min-Soo Kim. Hyun-Moo Hur, Joon-Hyuk Park, Won-Hee You

Abstract: This paper describes the performance measurement system of the active steering railway vehicle with the scaled test bed using the acquisition telemetry system about the wheel lateral force. Active steering system of railway vehicles has proven its ability to bridge the gap between stability and curve friendliness. This scaled test-bed system consists of two steering actuators, a steering controller, and various sensor systems to detect lateral displacement, vibration, track curvature, and sensor systems. To compare with the various control strategies, we installed the telemetry systems on the steering wheelsets to detect the wheel/rail lateral force. Running test results of 1/5 scaled active steering vehicle on the curved track show that the proposed measuring system has good performance.
Keywords:
Telemetry System, Lateral Force, Active Steering Controller, Railway Vehicle, Scaled Model.
Full Paper, pp. 9-16

 

The Importance of Water Efficiency in Buildings in Mediterranean Countries. The Portuguese Experience
by Silva-Afonso A., Pimentel-Rodrigues C.

Abstract: The risk of hydric stress will increase significantly across the entire planet, especially in the Mediterranean basin, and some Europeans countries, such as Portugal, might experience very serious problems in a large part of their territory in the short to medium term. In addition, there are high levels of inefficiency in the water use in some of these countries. In Portugal, for example, the overall global waste in water amounts at over 3 x 109 m3/year, which is around 39% of the country’s total water requirement. The truth is that the risks of hydric stress and the high level of inefficiency require the immediate implementation of various measures, including the promotion of the use of efficient products in buildings, among other measures. With this objective in view, a Portuguese non-governmental organisation dedicated to the promotion of quality and efficiency in buildings services (ANQIP), decided to launch a voluntary certification and labelling system for products water efficiency in October 2008. This paper describes the system that is being implemented and the categories attributed to each product and also present a detailed analysis of a Portuguese Specification, developed by ANQIP, for rainwater harvesting in buildings; it looks at certain technical aspects of the conception and design of installation components and the demands of water quality in light of its various uses. A brief reference about de measures being taken in Portugal for the reuse and recycling of greywater is also made.
Keywords:
Certification; labelling, rainwater harvesting, water efficiency.
Full Paper, pp. 17-24

 

Design of a Rule-Based Network
by Guenter Schuh, Wolfgang Boos, Ute Gartzen

Abstract: Because of today’s complexity it is unavoidable for most companies to manufacture via corporate networks. However, current network models yield a negative correlation between the favourable attributes efficiency and flexibility. In this paper a network form is suggested which lives up to today’s requirements, offering both means of efficiency and flexibility. The network to be created must live up to the character of a decentralized network. It needs to serve exchange processes resulting from the economic and judicial independence of the network partners. Simultaneously, the new network form needs to incorporate the ability of being coordinated by rules so that it efficiently lives up to the complexity challenge. This paper presents approaches for both, the organizational design and process design of a rule-based network which is led by a network manager.
Keywords:
Network, organization, process, design, rules
Full Paper, pp. 25-32

 

Methods of Usability Evaluation of Web-Based Geographic Information Systems
by Jitka Komarkova, Pavel Sedlak, Martin Novak, Alena Musilova, Veronika Slavikova

Abstract: Spatially influenced decision-making plays an important role in human lives. Suitable software tools can significantly support process of decision-making. Desktop geographic information systems (GIS) applications have been used by professional for many years, but they are not suitable for end users. Special kind of GIS applications, usually called Web-based GIS, is focused on end users, i.e. on casually working people who may have only a very limited knowledge of GIS, if any. Their computer literacy can be very low as well. Design of Web-based GIS should respect this reality so applications should be proposed with a strong focus on their usability. This article deals with suitable methods of usability testing of Web-based GIS. Several usability problems identified during previously done usability testing are described. Recommendations, how to prevent usability problems, are provided in the end of the article.
Keywords:
Spatial decision making, Web-based GIS, Usability, Heuristics, Heuristic evaluation.
Full Paper, pp. 33-41

 

Specific Problems of User Identification Methods Implementation in Web-Applications
by Oldrich Horak

Abstract: This article describes problems of user identification methods implementation in web-applications. The implementation costs are accentuated as the condition of these methods comparison. At the beginning, some specific issues of user identification are discussed due to features of front-end applications and application protocols used in background connection. The identification method implementation costs are meant as a part of the TCO, and the term of “Addition Implementation Costs” is defined closely. Some tips and techniques are accentuated to use for undesirable multi-user issue detection and avoidance in the relation to the user policy and conditions of the given application. The usability is discussed across common web-application in comparison to special application such as public administration systems or geographic information systems.
Keywords:
GeoWeb, Identification methods, Implementation costs, Information system, User identification, Web-application
Full Paper, pp. 42-49

 

BBS-based Information Management System in Chinese Offshore Software Development Company
by Li Cai, Zuoqi Wang, Masanori Akiyoshi, Norihisa Komoda

Abstract: This paper discusses BBS-based information management system, which is used in an offshore software development company. Employees encounter some questions during software development and exchange their knowledge by using the Bulletin Board System(BBS). Besides such BBS database stores reusable knowledge which are represented in both Chinese and Japanese BBS article threads, so employees can retrieve such knowledge via Chinese or Japanese query input as they want. These two functionalities are considered to be complementary from practical usage points of views, so evaluation by using questionnaire to users are necessary to clarify good/bad points. We confirmed information retrieval functionality should be improved to enhance practical usability.
Keywords:
BBS, Information management, Knowledge management, Offshore development
Full Paper, pp. 50-57

 

The Power Performance's Improvement of the Water Catching Fronts
by A. Alexandrescu

Abstract: The paper presents an analysis method based on the utilization of the analytical characteristics of the system’s components that facilitate the evaluation of its working conditions and allows at the same time the establishment of adequate measures for an efficacious control of the working regime. Suitable criterions have also been inserted in this analysis (such as maximum efficiency of the hydro mechanical equipment respectively the optimum diameter of the collecting pipe), in order to improve the energetic and economical performance of the ensemble of the ground water front through drilling and making it easier to establish optimal capacity of the ensemble fronts – pressure pipe. Case study: a tapping of ground water front constituted of a battery of 20 drilling wells equipped with submerged pumps HEBE 65x2, equidistantly disposed into two branches, on the left bank of the Moldova river. When determining the resulting head characteristics of the hydraulic systems with numerous elements coupled in parallel on a collecting pipe made of piping tracts with different diameters, calculating the local head loss at confluences, usually produces great discomfort to the specialist conducting the calculations, therefore he usually neglects or rudely approximates these values, thus diminishing the precision of the results. In order to facilitate the calculation of the working regimes of such installations, this paper presents the way for determining relations that in practical conditions can express the local head loss at confluences, and the local hydraulic resistance modules, as simple order’s numbers functions of the singularities, comparative to the upstream end of the collector.
Keywords:
Collecting pipe, Flow, Head, Hydraulic resistance module, Local head loss, Pressure, Tank
Full Paper, pp. 58-70

 

The Analysis of the Mechanic Features for the Pipes and Compensators from the Hydraulic Systems
by A. Alexandrescu

Abstract: This article shows the results of such a study, which has been triggered by a technological incident: the wrenching from the compensator and its axial shifting of a large diameter air pipe in a wastewater treatment plant, event that occurred after many years of normal operating. The phenomenon that occurred can be justified only as a result of action of some axial forces, taking into account that axial shifting of rectilinear pipe sectors is not impeded by any special blocking device, but only by the friction of the pipe on its supports (axially) and by the resistance torque generated by its own weight (in the supports of the perpendicular sectors). The friction forces on supports correspond to the total weight of the studied pipe (length and number of flanged couplings) and to the friction factor between pipes and supports. The axial forces that act upon bends correspond to the action's direction is sensibly depending of friction factor between mains and supports. The vertical force on the supports V corresponds to the quasi-even distribution of the total weight of the free shifting sector, on the nr supports that exist on its route. Deformation occurring in the console pipe sector allows an axial shifting of the perpendicular sector, corresponding to the arrow in its free end f.
Keywords:
Friction force, Deformation arrow, Inertia momentum, Pressure force, Temperature, Weight force
Full Paper, pp. 71-80

 

The use of Modelling Tools for Modelling of Spatial Analysis to Identify High-Risk Places in Barrier-Free Environment
by Pavel Sedlak, Jitka Komarkova, Martin Jedlicka, Radek Hlasny, Ivana Cernovska

Abstract: During the preparation phase of project, significant decisions concerning data, analyses, software tools, visualisation methods, etc. must be made. Business processes modelling includes all these necessary activities. The contribution is focused on modelling processes of spatial analyses usable for identification of all kinds of problematic places from the point of view of the barrier-free approach. The reason is that making suitable models can increase level of understanding solved tasks. Many various means of expression can be used for modelling. Suitable diagrams belong to the most widespread modelling tools. In practice, diagrams used for business processes modelling or for information systems modelling (e.g. EPC, flow-chart, and others) belong to the most often used diagrams. Possible ways of utilization of the above stated diagrams for modelling spatial analyses are described in the text.
Keywords:
Process modelling, Diagrams, Spatial analyses, Barriers
Full Paper, pp. 81-88

 

A Study of BLDC Motor Green Power Ship
by Wei-Yuan Dzan

Abstract: This paper primarily probes into the practical value of BLDC (Brushless DC) Motor in green power ships, approaching the comparison between DC and BLDC Motor. This research discusses the advantages of BLDC Motor, introducing its action principles and characteristics, and regards it as one of the essential points of green power ship design, followed by using the PWM method as the preliminary study of the control system.
Keywords:
Green, Power, Ships, Mathematical operator
Full Paper, pp. 89-98

 

Automatic Detection of Latent Bottleneck Processes through Perturbation-based Repercussion Analysis
by Seiichi Komiya, Daisuke Kinoshita, Hiroki Uchikawa, Yuya Kosaka

Abstract: Typical organizations in a company are usually engaged in more than one project running in parallel. In such a case, human and non-human resources (i.e., workers and development environments) are inevitably shared by those projects to carry out respective tasks. When a resource is shared among two or more projects and if a change is requested for such a resource by one of the projects, there may be a situation in which the project cannot change its assigned resource or adjust its schedule since other processes are competing for the same resource at the same time. The authors call such a process a bottleneck process. If a delay spreads to one of the bottleneck processes, the project cannot be completed by its due date because it is not possible to adjust its schedule or to change the resource. It is necessary to take measures to prevent a process delay from spreading to bottleneck processes. This paper proposes a method to detect bottleneck processes automatically and discusses the effectiveness of the method by simulating the impacts (perturbation) generated by delays of preceding processes using Perturbation-based Repercussion Analysis.
Keywords:
Project management, Detection of bottleneck processes, Perturbation, Repercussion analysis
Full Paper, pp. 99-108

 

Barriers to Internationalization of B-To-B-Services: Theoretical Analysis and Empirical Findings
by Jukka Ojasalo, Katri Ojasalo

Abstract: The literature includes some knowledge of barriers to internationalization of services in general, however very little knowledge exists of such barriers in the b-to-b-services context. Clearly, there is need to increase the knowledge in this area. The purpose of this paper is to increase the understanding of barriers to the internationalization of b-to-b-services. More precisely, this paper aims at finding and distinguishing general barriers in service industries from those specific to b-to-b-services. This paper is based on extensive literature analysis and empirical data. First, this paper makes an introduction to the nature of international services. Then, it discusses general barriers to internationalization of services. After that, it discusses the barriers to internationalization of b-to-b-services. Then it explains the empirical method. After that, it describes the empirical findings. Next, this article proposes a framework of barriers to internationalization of b-to-b-services. This framework contributes to the literature by showing both the general barriers in service industries as well as the barriers specific to b-to-b-services.
Keywords:
B-to-b-services, Internationalization, Trade barriers
Full Paper, pp. 109-116

 

Lightning Protection for Gas-Pipelines Installed under the Ground
by Hitoshi Kijima, Kenji Takato, Kazuo Murakawa

Abstract: Lightning protection for buried gas-pipelines has not yet being studid. Gas-pipes made of steel are covered with polyethylene sheath. When there is a high structure nearby the gas pipelines, the polyethylene’s insulation may be destroyed by lightning surge. In this study, we have evaluated the possibilities of insulatin breakdown of polyethlene sheath using a finite element method. As there is no rule on countermeasures in the world, we have to investigate the phenomenon when a lightning strikes the pipelines. Even the gas company normally use aditional sheath pipe or griddles to protect the gas pipelines from lightning surge , the effectiveness of these counter measure methods have not yet been evaluated. In addition to these methods, we have also investigated on the effectiveness of buried shielding wire normaly used for burial telecommunications lines. In this study, we have simulated various lightning protection measures such as a sheath pipe, griddles and buried shielding wire by using finite element method so that called JMAG.
Keywords:
Gas-pipeline, dielectric breakdown, sheath pipe, protection griddle, counterpoise, JMAG
Full Paper, pp. 117-126

 

Issue 3, Volume 5, 2011

Analysis of the Applicability of Selected Methods for Industrial Clusters Identifying
by Jan Stejskal

Abstract: Industrial clusters are not the new tools of economic development. But still from 90s of the 20 century industrial clusters were considered as suitable and available tool for supporting of the cooperation between enterprises, creating an environment for knowledge transfer, sharing and transformation of the innovations what are intended to bring financial and non-financial benefits and enhance their competitiveness. In practice there are difficulties, especially in phase of the industrial cluster births. The public sector grants special public finance for support of this phase. But we don’t know if the established cluster has the potential for existence or not. Different methods can check beforehand whether there is potential for at least the framework of clusters, or in which industry and present the basic prerequisites for the emergence of the cluster and its effective functioning. Literature has identified a large number of methods, but experience shows that they are not all usable in practice. This paper aims to identify practical use method for identifying sectors in which the emergence of clusters possible.
Keywords:
Industrial cluster, region, identification, cluster potential, development
Full Paper, pp. 255-262

 

The Environmental Safety in Relationship to Sustainable Development and Business Practice
by R. Myskova, M. Hub, J. Capek

Abstract: The problem of environmental safety can be considered an important tool which supports and ensures sustainable development. The environmental safety is important from more points of view - economic, social, and political. In the Czech Republic there are a number of tools supporting environmental protection, but these tools are also intended to improve the activities of Czech companies. The article presents the results of research on the use of instruments promoting environmental protection in selected small and medium-sized enterprises.
Keywords:
Sustainable development, environmental safety, environment, small and medium-sized enterprises
Full Paper, pp. 263-270

 

A Two-level Genetic Algorithm for the Multi-Mode Resource-Constrained Project Scheduling Problem
by J. Magalhaes-Mendes

Abstract: This paper presents a genetic algorithm for the multimode resource-constrained project scheduling problem (MRCPSP), in which multiple execution modes are available for each of the activities of the project. The objective function is the minimization of the construction project completion time. To solve the problem, is applied a two-level genetic algorithm, which makes use of two separate levels and extend the parameterized schedule generation scheme by introducing an improvement procedure. It is evaluated the quality of the schedule and present detailed comparative computational results for the MRCPSP, which reveal that this approach is a competitive algorithm.
Keywords:
Construction Management, Project Scheduling, Multi-mode RCPSP, Resource Constraints, Genetic Algorithms
Full Paper, pp. 271-278

 

Electronics and Informatics Solution in Mobile Robot Orientation
by Paul Ciprian Patic, Lucia Pascale, Luminita Duta, Mihaita Ardeleanu

Abstract: In this paper one proposed to achieve an autonomous mobile robot to simulate movement in an unknown environment, for example, to move inside of a maze. One used some electronics and informatics solution to make possible the guidance of a mobile robot. With specialized documentation and follow some practical examples, we made the prototype model robot, which is an application with a didactical and scientific goal for the some didactical and research laboratories. Using hardware and software capabilities of the PIC16F877 microcontroller produced by Microchip, one realized the moving of the prototype robot and one can say that one can try to induce the desired movements. Also, one use the MikroPascal like a software program environment.
Keywords:
3D Projection, Catia, Detection Sensors, Mobil Robot
Full Paper, pp. 279-286

 

RNG k-ε Modelling and Mobilization Experiments of Loss of Vacuum in Small Tanks for Nuclear Fusion Safety Applications
by P. Gaudio, A. Malizia, I. Lupelli

Abstract: The objective of this work concerns the RNG k-ε modelling and mobilization experiments of loss of vacuum in small tanks for nuclear fusion safety applications. Activated dust mobilization during a Loss of Vacuum Accidents (LOVA) is one of the safety concerns for the International Thermonuclear Experimental Reactor (ITER). Intense thermal loads in fusion devices occur during plasma disruptions, Edge Localized Modes (ELM) and Vertical Displacement Events (VDE). They will result in macroscopic erosion of the plasma facing materials and consequent accumulation of activated dust into the ITER Vacuum Vessel (VV). These kind of events can cause the dust leakage outside the VV that represents a high radiological risk for the workers and the population. A small facility, Small Tank for Aerosol Removal and Dust (STARDUST), was set up at the ENEA Frascati laboratories to perform experiments concerning the dust mobilization in a volume with the initial condition similar to those existing in ITER VV. The aim of this work was to reproduce a low pressurization rate (300 Pa/s) LOVA event in a vacuum vessel due to a small air leakage for two different positions of the leak, at the equatorial port level and at the divertor port level, in order to evaluate the influence of obstacles and walls temperature on dust resuspension during both maintenance (MC) and accident conditions (AC) (Twalls=25°C MC, 110°C AC). The dusts used were
tungsten (W);
stainless steel 316 (SS316);
carbon (C).
similar to those produced inside the vacuum chamber in a fusion reactor when the plasma facing materials vaporize due to the high energy deposition. The experimental campaign has been carried out by introducing inside STARDUST facility an obstacle to simulate the presence of objects, like divertor.
In the obstacle a slit was cut to simulate the limiter-divertor gap inside ITER VV. The velocity magnitude in STARDUST was investigated in order to map the velocity field by means of a punctual capacitive transducer placed inside STARDUST without obstacles. In this paper experimental campaign results are shown in order to investigate how the divertor and limiter-divertor gap influence dust mobilization into a VV. A two-dimensional (2D) modelling of STARDUST was made with the CFD commercial code FLUENT, in order to get a preliminary overview of the fluid dynamics behaviour during a LOVA event and to justify the mobilization data. Besides a numerical model was developed to compare numerical results with experimental ones.
Keywords:
Dust mobilization, nuclear fusion safety, LOVA, CFD
Full Paper, pp. 287-305

 

Intelligent Hybrid Control of Piezoelectric Actuated Micro Robot
by Y. Sabzehmeidani, M. Hussein, M. Mailah, M. Z. Md Zain, M. R. Abdullah

Abstract: In this paper, a piezoelectric micro robot is modelled and simulated based on hybrid fuzzy-based controller operating in a constrained environment (pipe). A mathematical model that represents the dynamic characteristics of micro robot is first presented. Then, the dynamic response of the robot system subjected to different input excitations is investigated. Different types of controllers are integrated into this system via a proportional-integralderivative (PID) controller, the sliding mode controller (SMC) and active force control (AFC) method which incorporates a fuzzy logic (FL) algorithm. The primary objective of the scheme is to ensure accurate trajectory tracking control of the micro robot system is achieved. The performance of the control system under different types of disturbances is evaluated through a rigorous simulation study. The obtained results clearly demonstrate an effective trajectory tracking capability of the worm-like micro robot in spite of the negative effects of the external disturbances.
Keywords:
Active force control, fuzzy logic, micro robot, sliding mode control
Full Paper, pp. 306-313

 

Modeling of Process of System Changes under Conditions of IT Applications Outsourcing
by Stanislava Simonova, Iva Zavadilova

Abstract: Every organization needs support of an information system (accordingly support of IT applications), while companies often choose to outsource these IT applications. Outsourcing of IT applications enables companies fully focus on core business activities (products in production sphere, services of public administration institutions), but it also requires specific rules and processes mainly when the change of the system is necessary. Change is driven by improvement of the process, when the company reflects internal and external influences and regulations. Changes in processes create requirements on data and operations with the data, so that the IT environment will fully support the future state. Projects support a big change of systems. Though small changes are more often, they are also crucial for the business. Unexpected and urgent changes cannot be processed by normal projects, because of their difficult and longterm planning. Company could not react fast enough and would not be as competitive as it would be necessary. The institutions (and their customers) need data from 'classical' transactional systems and from geographic information systems (for spatial decision making). Requirements for changes of spatially oriented data are more frequent than requirements for changes in classical information systems. The reason is that technology conditions are developing, territories are changing, demands of users on spatial data are changing, etc. The given organization can also be a guarantor of information source for other users (for example citizens utilize public data within public administration, customers ask for information about quality of products within production sphere). That is why it is necessary to flexibly react on system changes, even under conditions of outsourcing of IT applications which process these data sources. System changes can be considered instances of system change process; therefore, it is appropriate to apply tools of process modeling for their analysis.
Keywords:
IT applications outsourcing, ITIL and RFC, process changes modeling, RACI map, requirements for changes of spatial data, system changes
Full Paper, pp. 314-323

 

A Concept for Simulation of Autonomous Logistic Processes
by Bernd Scholz-Reiter, Daniel Rippel, Steffen Sowade

Abstract: Today, logistic systems face increasing dynamics and complexity. Autonomous Control faces these challenges, by enabling logistic objects to render their own local decisions. To apply autonomous control to real world applications, it is necessary to model and test autonomous processes before implementing them. The Autonomous Logistic Engineering Methodology provides tools to develop autonomous processes. In order to support testing and validation of these models, the methodology is extended by a simulation component. This article presents a concept, to transform the process models into executable simulation models. This procedure uses concepts and techniques of the Model Driven Architecture. Furthermore, the article presents a procedure that supports in selecting suitable simulation platforms and in integrating them into the methodology’s framework.
Keywords:
Autonomous Processes, Modeling, Model Driven Architecture, Model Transformation, Simulation
Full Paper, pp. 324-333

 

Preparation and Microstructure Characterization of Iron Oxide Pellets for Hydrogen Storage
by Karel Soukup, Jan Rogut, Jacek Grabowski, Marian Wiatowski, Magdalena Ludwik-Pardala, Petr Schneider, Olga Solcova

Abstract: The redox cycle of iron oxides (Fe3O4 + 4H2 - 3Fe + 4H2O) which can be applied as a new method of storage and supply of hydrogen were studied. The iron oxides were prepared by precipitation of aqueous ferric nitrate. The addition of aluminium oxide into iron oxides prevented the sintering of metal iron and/or iron oxides during repeated redox cycles. The optimal calcination temperature for cylindrical pellets preparation was found to be 850 oC. Transport parameters for Fe2O3/Al2O3 and Fe/Al2O3 samples, which can be utilized for optimization of porous structure for hydrogen storage, were determined by the chromatographic technique in the single pellet-string arrangement.
Keywords:
Hydrogen storage, Steam iron process, Transport parameters, Inverse gas chromatography
Full Paper, pp. 334-341

 

Application of Theories and Models for Information and Communication Technologies Acceptance in Banking Activities Modernization
by Liliana Mihaela Moga

Abstract: The paper identifies the factors that influence the banks customers’ usage of the Internet facilities for performing the banking activities and to renounce to visit the branches of the banks in order to interact with the banks officer’s. The user acceptance of Internet as new technologies that transform some traditional services and activities is a topic of interest for many professionals and researchers working in various domains. The focus of the paper is on the formulation of the hypotheses that have to be tested in order to validate a model for the Internet acceptance in banking activities, based both on the content of the main theories employed in assessing the technology acceptance as Information Diffusion Theory, Decomposed Theory of Planned Behaviour, trust and security and on other factors revealed by empirical studies conducted at European Union and particularized for Romania. Also, there are provided some recommendations to improve the current development of e-banking and also to encourage more banks’ customers to take advantage by the opportunity raised because of Internet use in performing banking activities and benefit fully from the e-banking services provided in Romania.
Keywords:
Banking activities, Internet, incentive factors, classical theories, Innovation Diffusion Theory, The Decomposed Theory of Planned Behaviour, empirical studies
Full Paper, pp. 342-349

 

Drivers for the Configuration of Autonomous Logistic Control Systems’ Infrastructure
by Bernd Scholz-Reiter, Steffen Sowade, Daniel Rippel

Abstract: Autonomous control is a suitable concept in order to increase the flexibility and the robustness of logistic processes by enabling decentralized decision making and execution at the elements of the logistic system . Thereto, the system’s elements require additional components that provide the necessary functionality to them. Orders, resources, and commodities are the relevant system elements to be enhanced. They are denoted as logistic objects. The new components are embedded into the logistic objects. They form the necessary infrastructure of an autonomous logistic control system. This paper introduces a qualitative model of drivers being relevant in order to configure the infrastructure of autonomous logistic control systems in a specific scenario. It presents and discusses the basic terms: logistic system, infrastructure, configuration, and autonomous control in the context of control systems for production logistics. Further, the paper presents an ontology of an assortment of infrastructure components in functional, object-oriented, and technological manner.
Keywords:
Autonomous Control System Design, Control System Infrastructure, System Architecture
Full Paper, pp. 350-358

 

The Fibre Reinforced Concrete with Using Recycled Aggregates
by V. Vytlacilova

Abstract: Application of recycled materials in the building industry is essential for permanently sustainable development of each country. The use of primary sources and materials is becoming unbearable both economically and ecologically, and therefore it is necessary to seek the possibility of reuse of those materials once their durability expired. Recycling them is the most effective method for dealing with the increasing volume of waste for preservation of the environment. There is whole range of applications of recycled materials in both architectural and civil engineering. This paper is focused on the experimental program aimed at verifying selected material properties of fibre reinforced concrete in which all of the natural stone aggregates is replaced by recycled aggregates – masonry and concrete. The combination of recycled construction and demolition waste, synthetic fibres and binder creates an unusual fibre reinforced concrete; new composite, which offers a wide field of possible use in construction industry. The paper presents experimental program and shows results on this composite - mechanical and physical characteristics – density, compressive strength, splitting tensile strength and flexural tensile strength and modulus of elasticity of fibre reinforced concrete. Based on a large series of acquired experimental results on different characteristics of the tested material, it can be judged on the behavior of this composite, which is sufficient enough to be used in ground structures as intended. The application of this composite material is ensured by the synthetic fibres, which along with the other components constitutes the tough structure of the composite favourable especially under tensile loading due to its high ductility.
Keywords:
Fibre reinforced concrete, recycled aggregate, synthetic fibres, mechanical properties, construction & demolition waste, masonry rubble, concrete rubble
Full Paper, pp. 359-366

 

Neural Path Planning for Mobile Robots
by Hachour Ouarda

Abstract: Navigation is a major challenge for autonomous, mobile robots. The problem can basically be divided into positioning and path planning. The proposed path finding strategy is designed in a known static environments. The proposed method starts from an initial point to a target point establishing a control nodes neural networks for which connections are made to determine the form of the path. This algorithm provides the robot the possibility to move from the initial position to the final position (target). The robot moves within the unknown environment by sensing and avoiding the obstacles coming across its way towards the target. The proposed algorithm can deal with any shape obstacles even if it is the case of circular obstacles. This case is the hardest one in any navigation problem. The problem is solved by proposing neural networks navigation systems. Indeed, NNs are well adapted in appropriate form when knowledge based systems are involved. Since the network is able to take into account and respond to new constraints and data related to the external environments, the adaptation here is largely related to the learning capacity. Besides, Networks of neurons can achieve complex classification based on the elementary capability of each neuron to distinguish classes its activation function. Some useful solutions are proposed for each situation. For any proposed environment, the robot succeeds to reach its target without collisions. The results are satisfactory to see the great number of environments treated The simulation results display the ability of the neural networks based approach providing autonomous mobile robots with capability to intelligently navigate in several environments.
Keywords:
Intelligent Autonomous Mobile Robot, Path Planning, Navigation, Neural Networks, Autonomy Requirements
Full Paper, pp. 367-376

 

Intelligent Autonomous Path Planning Systems
by Hachour Ouarda

Abstract: The theory and practice of Intelligent Autonomous Robot IAR are currently among the most intensively studied and promising areas in computer science and engineering which will certainly play a primary goal role in future. These theories and applications provide a source linking all fields in which intelligent control plays a dominant role. Cognition, perception, action, and learning are essential components of such-systems and their use is tending extensively towards challenging applications (service robots, micro-robots, bio-robots, guard robots, warehousing robots). The present paper studies the problem of motion of a mobile robot that moves inside an unknown environment with stationary unknown obstacles. This paper deals with the main principles of Intelligent Autonomous Systems IAS Path Planning and illustrates some criteria to be taken into account in any intelligent navigation control of IAS. For any starting point within the environment representing the initial position of the mobile robot.
Keywords:
Motion Planning, Autonomy requirements, Intelligent Autonomous Systems (IAS), Intelligence Obstacle avoidance
Full Paper, pp. 377-386

 

Studies Orientation and Recommendation System (SORS): Use Case Model and Requirements
by Marla Corniel, Fidel Gil, Jorge Molero, Jose Ferrer, Ana M. Borges, Richard Gil, Leonardo Contreras

Abstract: In this paper, a new perspective of the Studies Orientation and Recommendation System (SORS) is incorporate. This system is conceived to offer support to candidates that wish to enter into university education system in Venezuela. That perspective was related with the structural idea (logical), represented by some diagrams that describe, under UML, in theory and by design what the system will do. The different proposed ideas have contributed to the development of a good architecture of the system - unifying criteria of the different referring aspects from the design-, which aid to increase the productivity and offers a solid base to go deeper in the phases of analysis and design, and continue, subsequently, with the other stages of the project until the conformation of an initial prototype to be tested.
Keywords:
Higher Education Institutions (HEIs), Recommender System, Object Oriented Paradigm (OOP), Rational Unified Process (RUP), Semantic Modeling, Professional Education Opportunities
Full Paper, pp. 387-395

 

Evaluation of DSP based Numerical Relay for Overcurrent Protection
by Yin Lee Goh, Agileswari K. Ramasamy, Farrukh Hafiz Nagi, Aidil Azwin Zainul Abidin

Abstract: The reliability and security electrical supply is an important factor in modern society. However, the increasing complexity of power systems makes it difficult for protection operation to achieve these objectives. Nevertheless, numerical relays embedded with digital signal processor (DSP) are able to improve the protection operation significantly. The relays are capable of performing complex processing faster and with higher accuracy since the processing using DSP are optimized for real-time signal processing. In this paper, an overcurrent relay is built and investigated using DSP, TMS320F2812. The overcurrent protection is chosen since it is used as a major protection in the distribution systems. The overcurrent relay is modeled in MATLAB/Simulink before it is implemented on the DSP. Comparison results between simulation and hardware execution based on two implementation methods are presented. The performance evaluation of the relay in terms of operation time, memory capacity usage, execution time and transient analysis is investigated.
Keywords:
Power system protection, protective relaying, overcurrent protection, digital signal processors
Full Paper, pp. 396-403

 

World Understanding and Planning Missions
by Hachour Ouarda

Abstract: In this paper, we present an intelligent control of an autonomous mobile robot in unknown environments. When an autonomous robot moves from an initial point to a target point in its given environment, it is necessary to plan an optimal or feasible path avoiding obstacles in its way and answer to some criterion of autonomy requirements such as : thermal, energy, time, and safety for example. Therefore, the major main work for path planning for autonomous mobile robot is to search a collision free path. . A key prerequisite for a truly autonomous robot is that it can navigate safely within its environment and executing the task without doubt. The problem of achieving this mobility is one of the most active areas in mobile robotics research. When the mission is executed, it is necessary to plan an optimal or feasible path for itself avoiding obstructions in its way and minimizing a cost such as time, energy, and distance. In order to get an intelligent component, the proposed approach based on intelligent computing offers to the autonomous mobile system the ability to realize these factors: recognition, learning, decision-making, and action (the principle obstacle avoidance problems) which are the main factors to be considered in any design of navigation approach. The acquisition of these faculties constitutes the key of a certain kind of intelligence. Building this kind of intelligence is, up to now, a human ambition in the design and development of intelligent vehicles. However, the mobile robot is an appropriate tool for investing optional artificial intelligence problems relating to world understanding and taking a suitable action, such as, planning missions, avoiding obstacles, and fusing data from many sources. In this context we discuss this ability by proposing this approach. The results are promising for next developments.
Keywords:
Autonomous Mobile Robot , Navigation, Obstacle avoidance, Planning missions, World understanding
Full Paper, pp. 404-411

 

Route Map Generation
by Hachour Ouarda

Abstract: In this paper we present a route map generation of an autonomous mobile robot. The work in path planning has led into issues of map representation for a real world. Therefore, this problem is considered as one challenge in the field of mobile robots because of its direct effect for having a simple computationally efficient path planning strategy. For the real application in a real environment, it is necessary for the mobile robot to have a real time section while executing the planned path connected the start point and the goal point. The robot must then be able to understand the structure of the environment to find a way towards its target without collisions. To perform well this task several requirements must be satisfied and intelligent components become a necessity. More, world understanding and data interpreting is very solicited in any way of navigation When the target position is detected, the path planner will generate the proper path between the start and the goal position. This is called path planning step. The next step is to generate the geometric information of the generated path by searching the ways around the robot along the paths. This is called route map generation. When a route map generation is done, the next work is to control the robot itself to execute the route map, in order to achieve the goal planned by path planner and it is named as route runner. This is will be more clarified by the proposed work while answering to some interesting questions. The software implementation is very interesting to see the main factors are realized.
Keywords:
Intelligent Autonomous Systems (IAS), Intelligence, Obstacle avoidance, Route Map Generation
Full Paper, pp. 412-419

 

Control System for Locomotory Prosthesis Configuration
by P. L. Milea, G. Stefan, A. Barbilian, I. Codorean, M. Moga, S. Mitulescu, V. Codreanu, T. Boros, M. Teodorescu

Abstract: The current paper describes a control system designed for configuration of the locomotory prosthesis. The modeling and control system, which is the main subject of this paper, is designed to model, configure and control the intelligent prosthesis in absence of a patient, for research, developing or testing purposes. It offers a valuable help in determining the prosthesis' movements precision and reproducibility along with their conformity to the software modeled movements. It generates low level electrical signals, similar with the myoelectrical ones, which allow prosthesis tests and configurations to be made in laboratory conditions. The system has been tested on a simple active leg-prosthesis prototype and the results are presented.
Keywords:
Intelligent Prosthesis, Laboratory tests, Virtual Environment, Software Testing, Software Aided Design, Prosthesis Simulation, Myosignals, Systems configuration
Full Paper, pp. 420-427

 

Research Concerning Thermal Stress in Case of Stop and Duration Braking of Electric Locomotives EA-060 Type
by Mircea A. Dungan, Ioana Ionel, Luisa I. Dungan

Abstract: Generally, kinetic energy in the locomotive braking is converted into heat that is transmitted to the bandage. Because of overloading of the bandaged wheels the phenomena of bandages weakening combined with tread defects appears. This danger exists especially when train brakes on long slopes and with high gradients. The decisive effect on the frictional and wear characteristics of the brake system is exerted by temperature generated at friction. The aim of the paper - Determine by calculation the maximum temperature incurred during braking on friction members, both for new and for used bandages for the case of stop braking and for the case of duration braking.
Keywords:
Braking process, thermal stress, friction coefficient, wheels with bandages
Full Paper, pp. 428-435

 

Hardware & Software Package for Locomotory Disabled Patients Training
by P. L. Milea, G. Stefan, M. Moga, A. Barbilian, S. Mitulescu, E. Cernat, O. Oltu, C. Moldovan, S. Pompilian

Abstract: The design of an intelligent prosthesis involves a lot of issues that have to be solved for achieving good results. The modeling, implementation and accommodation phases for the active intelligent prosthesis is obviously a complex approach, involving both manufacturers' and patient's high implication. To support this approach we've projected and implemented a package of software solutions and hardware interfaces which eases the case identification and training stage for every patient. The package use requires some phases, described inside the paper, including: an analysis phase of the snag and its neighborhood, picking up all the useful controlling biosignals for the prosthesis and running bioelectrical tests to identify the minimum set of independent biosignals. These phases conclude with the training stage, which is done to verify the patient’s ability to use and control all the prosthesis functions. This training involves the patient's awareness in learning how to control his own biosignals by means of their visual correlation to the movements of an already attached virtual prosthesis. Based on data offered by the identification and training phases, one can choose a prosthesis solution among those available, best suited to the patient's case and abilities, along with his financial availability, required by one choice or another. Considerable time and money savings can be achieved by using this set of software and hardware solutions, both because of delays and prosthesis mismatching elimination and because of the patient's involvement in picking up of the appropriate solution. The training must be finished before purchasing an intelligent prosthesis, which is costliness. The proposed methodology, the hardware and software package components we made and the tests we have run are detailed inside the paper.
Keywords:
Intelligent Prosthesis, Prosthesis Modelling, Biosignals, Disabled Patients Training, Prosthetic Solutions Choosing, Virtual Environment, Software Asisted Training
Full Paper, pp. 436-443

 

Issue 5, Volume 5, 2011

Decentralized Controller Design Using Dynamic Output Feedback
by M. R. Hojjati, S. Akraminejad, K. Zare

Abstract: To control the large scale systems is important. In this paper, a multi variable non-linear system (two inverted pendulum coupled by a spring) is output feedback linearized and the system is generalized in two subsystems and decentralized dynamic output feedback basis on Lyapunov equation is applied. Using this model, the large scale system can be formulated, designed and generalized to be controlled.
Keywords:
Decentralized Control, Dynamic Output Feedback, Large Scale System
Full Paper, pp. 585-592

 

Innovative ICT Means in Financial Management
by Titus Slavici, Dumitru Mnerie, Doina Darvasi, Mircea Untaru, Liliana Dorneanu

Abstract: This paper aims at proposing new innovative methods of artificial intelligence in financial management. The general objective of this article is to ensure an efficient way to make financial decision in internal management based on the “intelligence methodmanagement problem” pair. Moreover, the research is extended also to the introduction of fuzzy system applications in the economic environment. Such an application is used to optimize the portfolio management of financial securities, providing the company an improved tool to extending its profits. Also, the economic environment itself benefits from such instruments by increasing competitiveness among companies.
Keywords:
Artificial intelligence, artificial neural networks, financial securities, fuzzy systems, efficient financial management
Full Paper, pp. 593-601

 

Is Big Brother Watching You?
by Tuomo Tuohimaa, Ilkka Tikanmaki, Jyri Rajamaki, Jouni Viitanen, Pasi Patama, Juha Knuuttila, Harri Ruoslahti

Abstract: People are increasingly worried about the developments in information technology, especially what concerns about their privacy. Nowadays, it can be proved that personal information is very difficult to protect - especially in the Internet. Scientific studies show that the key risk of security is people. There are people who develop computer systems, and those who use information technology. Privacy and security protection can be seen as a basic human right. Confidence to the Law Enforcement Agencies (LEAs) has always been high in Finland. Despite of this, there are people in society, who do not trust at all to LEAs - especially what comes for different kind of surveillance by the police. Development and the speed of different kind of information are really fast, and one of the main problems is the law retardation. How many people are even thinking about what kind of a walking data bank they are with, for example mobile phones, bonus- and creditcards? In fact in this society, there is always someone who knows who you are, how you live, who your friends are, wherever you are, what you do, what you buy, what are your hobbies and what kind of lifestyle you have. But the main concern in this matter is not how anyone other than the authority gets such information - but what LEA is doing with information they get. However, people are willing to give more rights to authorities if, usage of these intrusive means, are more transparent and better informed to the public. Today there are technological possibilities to create more transparent and credible monitoring for surveillance activities and in this paper is given an example of that.
Keywords:
Law enforcement, Legal audit, Oversight, Privacy, Public safety, Surveillance, Trust
Full Paper, pp. 602-609

 

Cooperation Challenges to Public Safety Organizations on the Use of Unmanned Aircraft Systems (UAS)
by Tuomo Tuohimaa, Ilkka Tikanmaki, Jyri Rajamaki

Abstract: This study deals with the importance of networking for co-operating authorities and their duties. As an example, we will dissect unmanned aircraft system (UAS) utilization for improving and speeding up a situational awareness and a real-time picture. Networking is emphasized between cooperation with national authorities, because the players are under the supervision of different ministries. Inter-ministerial co-operation is already in a good shape, but given the relevant persons in the mutual interaction may be scarce. In this point of view, the challenge for UASs use include ministries fragmented budgets, a lack of common practices of the new system of exploitation and the lack of cultural activities. It has revealed a need for networking between the authorities in cooperation of implementation of UAS. Different levels of networking means to cooperation between organizations: performing a similar task teams to cooperate, or individual experts formed a collaborative network. UAS cooperation with the authorities will act in all of the above (sectored, regional, level) mention areas. The importance of cooperation between authorities has discovered an important subject to be developed. The Finnish Government’s Security and Defense Policy states that the close cooperation between the authorities achieves synergies between overlap functions by cutting and support functions to enable efficient use of. Situational awareness and government collaboration will be developed both nationally and internationally. Efficient use of resources in society is a sensible, economical and appropriate. Therefore, in UAS development activities, must participate many part-sides (Police, Fire and Rescue Services, Border Guard, Customs, etc.). Strategy work requires a new perspective and you must be able to see large complexes. Different entities interact with each other and strategic decisions require courage. Successful organizations create a uccessful strategy, implement it and they are able to renew their strategies with the latest requirements.
Keywords:
Public safety, UAS, UAV, Unmanned aircraft system, Unmanned air vehicles
Full Paper, pp. 610-617

 

Setup Time Reduction in an Automotive Battery Assembly Line
by B. M. Deros, D. Mohamad, M.H.M. Idris, M. N. A. Rahman, J. A. Ghani, A. R. Ismail

Abstract: Many manufacturers face cost-reduction and efficiency challenges in their manufacturing operations. To survive in today’s highly competitive world, manufacturers need to find ways to reduce production time and costs in order to improve operating performance and product quality. Nowadays, targets of an increased productivity, operational availability and better overall efficiency of the production line are the most important goals for almost all manufacturing companies. The main objective of this study is to improve battery assembly line setup time and at the same time reduce the manufacturing costs. The specific objectives of the study are firstly to reduce setup time; secondly to identify existing and expected problems and implement and identify potential process improvements in the assembly line and thirdly to measure setup time reduction performance in terms of time and cost, productivity, quality and operational availability and flexibility. The result shows that this study has achieved more than the target 35% of setup time reduction. From setup time reduction, a total cost savings of RM168, 000 was achieved in assembly line A. Meanwhile the company level a total saving of RM1.11million was achieved for all assembly lines in Company X. Other various benefit also achieved from SMED implementation and this study also shows that tooling cost is not a major factor contributing to the increase in manufacturing costs for this company.
Keywords:
Bottleneck, cost saving, lean manufacturing, setup time, SMED
Full Paper, pp. 618-625

 

A Fuzzy PMCI Model for Productivity Improvement with a Survey in the Health Care Organization
by G. Haj Ebrahimi, M. A. Sobhanallahi, A. Mirzazadeh

Abstract: In a competitive environment, health care organizations must continuously improve their productivity to sustain long-term growth and profitability. High productivity performance has been mostly assumed to be a natural outcome of successful health care management. The goods and services creation requires changes in the expended resources into the output goods and services. The efficiently of transforming input resources into goods and services depend on the productivity of the transformation process. However, it has been observed there is always vagueness or imprecision associated with the values of inputs and outputs. Therefore, it is difficult for a productivity measurement expert to specify the amount of resources and the outputs as exact scalar numbers. The present paper, applies fuzzy set theory to measure productivity of a hospital with PMCI method when numerical data cannot be specified in exact terms. The approach makes it possible to measure productivity of organizational units (including non-government and non-profit entities) when the expert inputs cannot be specified as exact scalar quantities.
Keywords:
Fuzzy PMCI model; Vagueness; Productivity; Health care organizations
Full Paper, pp. 626-633

 

Optimal Fuzzy Logic Based Enterprise Resource Planning System for Hydraulic Cylinders Assembly
by Dimitrov V. Lubomir, Yordanova T. Snejana

Abstract: This paper presents a fuzzy logic based improvement of the existing Enterprise Resource Planning system of a small size production factory in Bulgaria in order to ensure optimal balancing of the workload of assembly-testing flow lines for hydraulic cylinders. A Sugeno fuzzy classifier is suggested to provide flexibility in directing cylinders with different specific parameters to proper lines. It is based on a classification scheme that considers possible overlapping of groups of hydraulic cylinders. The decision on the line assigned is made accounting also for the minimal cylinder delay time. The efficiency of the classifier is assessed for two scenarios by simulation using a complex criterion that accounts for lines idle time and cylinders delay time. The fuzzy logic based improvement enables optimization and is an effective way to reduce costs of the modern production, characterized by demassovization and orientation to the customers’ unique needs.
Keywords:
Enterprise resource planning, Fuzzy system, Hydraulic systems, Optimal search technique, Simulation
Full Paper, pp. 634-641

 

Metrics of Data Model for Regional Territorial Planning
by Stanislava Simonova, Dominik Sykora

Abstract: Management processes of strategic regional management rely significantly on map element. Territorial planning data serve as support for management decision making on both higher regional units level and municipality level. Map data and map documents are created based on data provided by organizations with function of data providers. The quality of input data influences the quality of data model, whereas the quality of data model has decisive influence on mapping process and thus also on the quality of decision making itself. That is why it is appropriate to set suitable indicators for the monitoring quality of input data, based on which map data are created. The article addresses possibilities of setting indicators with focus on input data.
Keywords:
Data modeling, process modeling, regional territorial planning, spatial decision making
Full Paper, pp. 642-649

 

New Solutions for Driving the Hydraulic Fixtures
by Tudor Paunescu

Abstract: The linear hydraulic pumps for power-workholding devices proposed in this paper are based on a new concept, these are mechanical actuated by the machine tools. Thus, the pumps have a greater energetic efficiency and are cheaper than other hydraulic power sources like electric or pneumatic power units. This kind of pump is primarily for use in flexible machining centers, in which the power source can not remain connected to the fixture, and for power clamping on portable palletized fixtures. It is a good solution for simple applications with high pressures and relatively low fluid capacities. A several variants of pumps for hydraulic power fixture systems are proposed and compared.
Keywords:
Clamping device, conceptual design, force amplifying, hydraulic circuit, hydraulic pump, power workholding
Full Paper, pp. 650-657

 

Products Reliability Assessment using Monte-Carlo Simulation
by Dumitrascu Adela-Eliza, Duicu Simona

Abstract: Product reliability is a critical part of total product quality. Reliability is a measure of a product’s performance that affects both product function and operating and repair costs. Too often performance is thought of only in terms of speed, capacity, range, and other “normal” measures. This paper presents an approach to evaluate the reliability and unreliability of the industrial products taking into consideration the parameters deviation. For this reason, a variety of measurement methods, including test methods and specialized analytical techniques, it have been developed. Based on a Monte Carlo simulation, it was elaborated a program which we allows to calculate the normal distribution parameters. The methods used for estimation of products reliability should be those that meet the customer’s needs in accordance with the strategy of the organization making the measurements. The case study consists of measuring process of an industrial product dimension and estimation of reliability and unreliability functions.
Keywords:
Improvement, quality, normal distribution, Monte Carlo simulation, reliability estimation, parameters deviation
Full Paper, pp. 658-665

 

Consolidation in the Czech Republic and Impact of International Accounting Standards to the Czech Accounting
by Karel Steker, Milana Otrusinova

Abstract: The paper focuses on the consolidation in the Czech Republic and the influence of the international accounting standards on the Czech accounting legislation. The aims are to notice the actual problems associated with the implementing of the accounting reform and drawing up the consolidated financial statements for the Czech Republic. One of the objectives of the reform is to provide conditions for increasing the credibility of financial statements for the Czech Republic, both towards the European Union and international entities, including foreign investors. Further aim of the reform is to approach public sector accounting to methods and procedures known from the business accounting and to use the experience of international practice. The process of consolidating the financial statements for the Czech Republic is still not completed; they are currently being prepared for their phased implementation. The problems of consolidation are currently in a stage of legislative arrangements and implementing. In the part of this paper, the research is presented which shall deal with an entity in connection with the ongoing state accounting.
Keywords:
Consolidation, Czech Republic, Financial statements, IFRS, IPSAS, State accounting
Full Paper, pp. 666-673

 

Software and Hardware Specification for Area Segmentation with Laser Scanner SICK LMS 400
by Pavel Neckar, Milan Adamek

Abstract: The laser scanner SICK LMS 400 with software for area segmentation gives an opportunity to create dual system, which increases the safety and development of production processes. The setting of correct values supported full utilizable system, which is helpful in decision-making whether the person is located in the area of production or not. The developed software uses the distance values from laser scanner and data conditions which depends on operator decision. For correcting possible errors is recommended the trial operation of production line.
Keywords:
Human safety, laser, production line, scanner, security areas, segmentation
Full Paper, pp. 674-681

 

 

 

Issue 2, Volume 5, 2011

The Real Options for Adaptability to Environmental Change in Enterprise Resource Planning Systems
by T. Sekozawa, J. Nakagane

Abstract: This paper discusses the options for adaptability to environmental change inherent in enterprise resource planning (ERP) systems, the value of these options, and methods to asses the ERP value. The first point of discussion is the issue of ascertaining the effectiveness of ERP, an underlying asset. We divide the effectiveness into two types—effectiveness in actually generating cash and effectiveness confined to opportunity cost reduction—and propose a method for calculating the ERP value effective in generating cash. In this paper, we provide as Case Study 1 a specific proposal for ascertaining effectiveness through the valuation of ERP introduction and of the Electronic Data Interchange (EDI) function realizable as a result of ERP introduction. The second point of discussion is the valuation of information systems in the context of business acquisition and divestiture. Although business acquisition and divestiture is another unavoidable topic for corporate management, information system valuation has not been discussed in that context. We present a valuation method for the purpose of including information systems in divestment value, something not considered heretofore, to reveal the potential value of information systems in corporate management. In Case Study 2, we take up the divestiture of a certain business site. Calculation of the market price of an information system in such circumstances indicates the practicality and effectiveness of applying option valuation to information systems.
Keywords:
ERP system development, investment valuation, opportunity cost, real options
Full Paper, pp. 127-134

 

Securing Communication of SCADA Components in Smart Grid Environment
by Tai-Hoon Kim

Abstract: SCADA is a Process Control Systems, designed to automate systems such as traffic control, power grid management, waste processing etc. Conventionally, SCADA is connected only in a limited private network because SCADA is considered a critical infrastructure, and connecting to the internet may put the society on jeopardy, SCADA operators hold back on connecting it to the public network like the internet. Connecting SCADA to the Internet can provide a lot of advantages in terms of control, data viewing and generation. SCADA infrastructures like electricity can also be a part of a Smart Grid. Connecting SCADA to a public network can bring a lot of security issues. In this paper, a SCADA communication security solution using crossed-crypto-scheme is proposed.
Keywords:
Smart Gird , SCADA, Security Issues, Encryption, Crossed Crypto-scheme
Full Paper, pp. 135-142

 

Dynamometer Tests of Brake Shoes under Wet Conditions for the High Speed Trains
by Min-Soo Kim

Abstract: This paper discuss comparative studies of the wheel tread brake with composite brake blocks between under conditions with dry and wet using the dynamometer tests for the high speed trains. Generally brake system of railway vehicles has a crucial role for the safety as well as riding quality of passengers. And brake dynamometers are widely used to evaluate the performance of brake systems and test the brake parts under various environments (weight, velocity, brake force, wet-dry conditions). Especially, in the process of the brake stops, the friction coefficients between under dry and wet conditions must not deviate from each other by more than 15% under the same testing conditions. Experiments on the brake dynamometer for the high speed trains are shown to illustrate the comparative studies of the tread brake of dynamometer tests between under dry and wet conditions with initial vehicle speed at 200 [km/h] and 80 [km/h] considering the 920 [mm] wheel diameter, respectively.
Keywords:
Tread Brake Blocks, Brake Dynamometer, Railway Vehicle, Friction Coefficient. Wet Condition
Full Paper, pp. 143-150

 

A Simple Local Path Planning Algorithm for Autonomous Mobile Robots
by Buniyamin N., Wan Ngah W.A.J., Sariff N., Mohamad Z.

Abstract: This paper presents an overview of path planning algorithms for autonomous robots. The paper then focuses on the bug algorithm family which is a local path planning algorithm. Bug algorithms use sensors to detect the nearest obstacle as a mobile robot moves towards a target with limited information about the environment. The algorithm uses obstacle border as guidance toward the target as the robot circumnavigates the obstacle till it finds certain condition to fulfill the algorithm criteria to leave the obstacle toward target point. In addition, this paper introduces an approach utilizing a new algorithm called PointBug. This algorithm attempts to minimize the use of outer perimeter of an obstacle (obstacle border) by looking for a few important points on the outer perimeter of obstacle area as a turning point to target and finally generate a complete path from source to target. The less use of outer perimeter of obstacle area produces shorter total path length taken by a mobile robot. Further this approach is then compared with other existing selected local path planning algorithm for total distance and a guarantee to reach the target.
Keywords:
Path Planning, Bug algorithm, Autonomous robot, Sensor based, Mobile robot
Full Paper, pp. 151-159

 

A Method for Navigating Interview-Driven Software Requirements Elicitation Work: Effectiveness Evaluation of the Method from the Viewpoint of Efficiency
by Tatatoshi Yamanaka, Seiichi Komiya

Abstract: A software development task is performed in accordance with requirements specification. Therefore, requirements elicitation work in order to prepare requirements specification is a very important task. However, it is very difficult to elicit user requirements for software development without omissions or errors, mainly because customers are often ignorant for software development technologies, and novice SEs do not have enough knowledge of the business contents for the software development. In order to solve this problem, the authors recognize requirements elicitation work as interview techniques, and are proposing a method to navigate interview-driven software requirements elicitation work conducted by SEs to customers so that SEs are able to elicit user requirements without omissions or errors [16]. Then, the effectiveness of the proposed method was proven by conducting the experiment to compare completeness and accuracy of the elicited requirements. This paper discusses effectiveness of the proposed method from the viewpoint of efficiency of requirements elicitation work by conducting the comparative experiment in regards to the cases that the method proposed in the Reference [16] was used and not used.
Keywords:
Interview, Requirements elicitation, Interview-driven software requirements elicitation, navigation of software requirements elicitation work, navigation rules, efficiency of software requirements elicitation work
Full Paper, pp. 160-169

 

Shift to IFRS – What Would this Mean for Czech Companies
by Katerina Struharova, Karel Steker, Milana Otrusinova

Abstract: Usage of IFRS financial statements in the Czech Republic is very rare. This is due to the fact that only listed entities are required to prepare its consolidated financial statements in line with IFRS. If other entities want to prepare their financial statements under IFRS they have to prepare them in addition to financial statements under CZ GAAP which are mandatory for statutory purposes. Also the opportunities that IFRS can bring to Czech companies are not seen by them. In this paper we discuss what the shift to IFRS mean for Czech companies and what is the impact of possible adoption or convergence plans on Czech companies.
Keywords:
Adoption, harmonization, IFRS, the Czech Republic
Full Paper, pp. 170-177

 

The Flexicurity of the Romanian Labour Market from the Perspective of the Employees and the Employers
by Avram Costin Daniel, Avram Veronel

Abstract: The labour market is a regulated market all over the world, where the labour demand and offer are located in the centre of the economic policy of the government, preoccupied with the reduction of the unemployment and the reduction of the temporary or long-term unbalances from the labour market. The state cannot be seen only as a referee in the battle between the Employers’ Associations and the Union Confederations, being a large employer at the same time, either because it is about the employees of the public institutions who receive their salaries from the state budget or because it is about the employees of the companies with an integral or a majority capital from the state budget, the number of the employees from the state sector is considerable. The state is not just an employer, but a constitutional guarantee of the right to work and social protection, of the right to education and health without privileges and discriminations. On the other hand, the state must ensure the legal and institutional frame that favours the actual enrolment of the social dialogue system. For the employers, the flexicurity of the labour market is an essential condition under the impact of the international financial crisis; the companies must adapt to the exigencies of the competitiveness growth in an environment many times characterised as hostile. The present study presents the main obstacles which must be overcome in order to implement the labour flexicurity principles in the Romanian business environment, as well as the case study regarding the manner in which the EUROTYRE Company, Drobeta Turnu Severin employees appreciate the labour flexicurity.
Keywords:
Labour market, employees, employers, flexibility, security, flexicurity
Full Paper, pp. 178-186

 

Unemployment as the Macroeconomic Problem: the Case of Visegrad Group Countries
by Michal Tvrdon

Abstract: The paper studies unemployment in the Visegrad Group countries (Czech Republic, Hungary, Slovakia and Poland) during the time period 2000 - 2009. Unemployment is analyzed in terms of its duration as well as from a regional perspective. All Visegrad Group countries have been severely hit by the global economic and financial crisis at the end of the observed period. One of the most important impacts of the crisis was a reduction of the general economic activity. As a direct consequence of this development, the labor market suffered a strong imbalance. Moreover, there existed some imbalances even before the crisis. Long-term unemployment persistence and its high share in total unemployment constitutes serious problem in these countries. In addition, the long-term unemployment rates were among the highest within the EU Member States. Using Eurostat and OECD data, the paper analyses and discusses development and consequences of unemployment both at a national and a regional level. The main finding of this analysis is that both the level of absolute dispersion and long-term unemployment rate has not remained constant over time and that the absolute dispersion was positively correlated with the long-term unemployment rate.
Keywords:
Labor market, Long-term unemployment, NUTS 2, Visegrad group, Economic crisis
Full Paper, pp. 187-197

 

The Role of Rural Tourism in the Socio-Economic Diversification of Rural Space from Lapusului Land (Tara Lapusului, Maramures County, Romania)
by Stefan Dezsi, Jozsef Benedek

Abstract: This study is aimed to provide a “radiography” of nowadays stage of rural tourism’s development in Lapuºului Land and highlights the main results of a larger study about the rural tourism from this region. After a brief review of the evolution of the tourist accommodation units specific for the rural tourism (the tourist hostels) within a given period of time (2000-2009) and of their territorial distribution in the localities, we presents the main results of a field investigation taken through the technique of questionnaire applied directly, through operators upon a sample made of 24 households from 12 localities. The questionnaire elaboration and the assessment of the field inquiry results was based upon the analysis of the following problems: presentation of the households’ specific features that practise rural tourism; effects of the contacts with abroad; motivation of practising rural tourism from the perspective of the implied actors; way in which the actors appreciate their own level of life compared with that established at the level of country and its possible implications upon the tourism; way in which the households attract tourists, offered services and foreseen improvements, places for accomodation, practised prices; seasonality problem of the touristic flow; incomes from tourism; character of tourism (inner, international) and the origin areas of tourists; degree of satisfaction/insatisfaction, reasons for dissatisfaction and the intention to continue or renounce rural tourism. Finally, the main conclusions have been drawn on the basis of field inquiry processing and assessment.
Keywords:
Tourist resources, etnographic region, rural tourism, field inquiry, questionnaire
Full Paper, pp. 198-207

 

Accounting of Public Institutions - New Approaches of Partnership Contracts
by Dragu Gabi Georgiana

Abstract: The combination between irredeemable external funds with private public partnership represents an objective that the EU Commission has been working at for many years. Particularly, there was a need to highlight the necessity of adapting the chart of accounts of public institutions, the budgetary classification to the evolution of contractual relations of public institutions, the partnership contracts, the research contracts, the energetic efficiency contracts etc. The prospect of approaching the subject partnerships is new and unique in this field .The research methodology applied is based on observation and practical experience of testing theoretical approaches and new methodologies and ideas. It extensively considers desk surveys of the existing documentation and success stories existing in the field.
Keywords:
European System of Accounts ESA95, energetic efficiency contracts partnership contracts, research contracts
Full Paper, pp. 208-215

 

Using Fast Frame Decomposition and Sorting by Contour Tracing Mobile Phone Comic Imaging System
by Yusuke In, Takashi Oie, Masakazu Higuchi, Shuji Kawasaki, Atushi Koike, Hitomi Murakami

Abstract: As one of the mobile phone contents, electronic books and magazine, especially comics, are expected to have great potential. In order to view comics on mobile phones, the resolution and the size of screens must be adequate. A comic then needs to be decomposed into frames and put them in order so that they can be read properly. However, it is known that accurate decomposition is not an easy task. In this paper, we propose a fast and accurate clipping method using contour tracing and evaluate it comparing with an existing commercial system.
Keywords:
Comic, mobile phone, image processing, layout analysis
Full Paper, pp. 216-223

 

Waiting/Cruising Location Recommendation for Efficient Taxi Business
by T. Takayama, K. Matsumoto, A. Kumagai, N. Sato, Y. Murata

Abstract: Recently, lots of researchers are attracted to constructing information system for efficient taxi business. In general, there are three types of methods in order to catch a passenger for a taxi driver: ‘waiting’, ‘cruising’, and ‘wireless/order’. Conventional systems decline to support ‘wireless/order’ method, and it is not sufficient to support ‘waiting’ and/or ‘cruising’ one. Therefore, in the present paper, we try to support ‘waiting’ and ‘cruising’ based on mining of occupied taxi data and try to catch a passenger more efficiently. According to the result of our evaluation experiment, our proposition is effective.
Keywords:
Database, data mining, ITS(Intelligent Transport Systems), recommendation, and taxi
Full Paper, pp. 224-236

 

Architecture and Flexibility of Digital Libraries Systems
by Michal Kokorceny

Abstract: In the last decades digital libraries play an important role in knowledge sharing. Suitable architecture of any information system (not only a digital library) is important aspect for all institutions. From the point of view of an institution managing collection(s) of digital objects it is important to choose such system and architecture, which represents low costs of implementation and maintenance of the digital library system, possibility to easily integrate the system into the IS/ICT environment of the institution and sufficient flexibility of the information system for future changes. In this paper we will compare six widely used software systems from perspective of architecture of information systems. We will point out several problematic areas of contemporary digital libraries systems and we will propose certain possible trends of future development.
Keywords:
CDS Invenio, Digital library, DILLEO, DSpace, EPrints, Fedora, Greenstone, Service oriented architecture
Full Paper, pp. 237-244

 

Defining Categories and Functionalities of Semantic Web Applications
by Lidia Rovan, Tomislav Jagust, Mirta Baranovic

Abstract: We argue that constant technological changes in the Semantic Web field are diminishing relevance of the proposed methodologies for development of Semantic Web solutions. Overview of the current trends and standards in the field of the Semantic Web showed that most of the basic building elements needed for Semantic Web application development are now standardized. We suggest that providing unique development methodology for all Semantic Web applications is not satisfactory and that specialization of methodologies is needed. To establish foundation for such methodologies we conducted an analysis of Semantic Web solutions in order to define Semantic Web application categories and their common functionalities. In this paper we present our categorization scheme and provide generalizations of common Semantic Web application functionalities.
Keywords:
Categorization, development process, semantic web, functionalities
Full Paper, pp. 245-253

 

Issue 4, Volume 5, 2011

ICT Developments in “Globalization Era” through European Union Funds
by D. Litan, D. M. A. Marinescu, E. Mititel, G. D. Stoian

Abstract: Globalization... a term increasingly used in this century. A term that may be terrifying for some and beloved by others, because globalization brings along a number of economic, social, political and cultural changes in certain geographical areas and the “alignment” of the above mentioned elements to the standards of the economically developed countries which initiated the phenomenon of globalization. The main factor that led to the phenomenon of globalization was the development of new information technologies. Presently, ICT (Information and Communications Technology) is the main driver of economic and social modernization. It plays an important role in boosting innovation, creativity and competitiveness of all industry and service sectors. Along with the emergence of new information technologiesand their wide expansion, a series of projects aiming at promoting and launching information systems such as online e-government havebeen started, because the implementation of software products based on e-government concept brings along a number of benefits both for citizens and public institutions. Therefore, increased an amount of funds provided by the European Union was and is allocated to this sector in addition to private investments, recognizing the significance and scale of the latest developments.
Keywords:
Digital Agenda, e-government, European funds, globalization, information systems, information technology, innovation, investments, private sector, public sector
Full Paper, pp. 445-460

 

Optimization of Buffer-Size Allocation using Dynamic Programming
by Masayoshi Hasama, Yu Song, Takao Ito, Seigo Matsuno

Abstract: Assembly-like Queueing systems are used in the assembly processes in production lines in the chemical industry as well as dataflow in computer systems. While many models are constructed in tandem and merge systems, assembly-like systems are known to be more complicated and difficult to analyze. These systems are not investigated in queueing theory. Whereas most research focuses on simple assembly-nodes, in this paper, we evaluate by dynamic programming using numerical analysis to propose buffer-size optimal allocation algorithm.
Keywords:
Assembly-like system, Buffer Allocation, Dynamic Programming, Production System
Full Paper, pp. 461-468

 

A Descriptive Model Based on the Mining of Web Map Server Logs for Tile Prefetching in a Web Map Cache
by Ricardo García, Juan Pablo de Castro, María Jesús Verdú, Elena Verdú, Luisa María Regueras, Pablo López

Abstract: Web mapping has become a popular way of distributing interactive digital maps over the Internet. Traditional web map services generated map images on the fly each time a request was received, which limited service scalability and offered a poor user experience. Most popular web map services, such as Google Maps or Microsoft Virtual Earth, have demonstrated that an optimal delivery of online mapping can be achieved by serving pre-generated map image tiles from a server-side cache. However, these caches can grow unmanageably in size, forcing administrators to use partial caches containing just a subset of the total tiles. By assuming that users access patterns are slow to change, service history can be used to determine in advance which areas are likely to be requested in the future, based exclusively on past accesses. Those tiles with high probability of being requested shortly can be pre-generated and cached on advance for faster retrieval. This work proposes the use of a descriptive model based on the mining of web map server logs for predicting popular areas in a web map, considered good candidates for tile prefetching. However, as the number of tiles grows exponentially with the rendering resolution level, it is rarely feasible to work with statistics of individual tiles. To overcome this issue, a simplified model is proposed which combines statistics from multiple tiles to reduce the dimension of the tiling space. This model has been tested using real-world logs from several nationwide public web map services in Spain. Simulations demonstrate that significant savings of storage requirements can be achieved by using a partial cache with the proposed model, while maintaining a high cache hit ratio.
Keywords:
Web mapping, Map tile, WMTS, SDI, WMS, Descriptive model, Logs, Proxy cache.
Full Paper, pp. 469-476

 

Flow-Pressure Analysis of Loop Gas Networks
by J. Krope, P. Trop, D. Goricanec

Abstract: This paper proposes a mathematical model underlying a computer program for flow-pressure analysis of loop gas pipe networks. The method is used on a test case with four nodes. The HAPN application for flow-pressure analyses of low pressure gas pipe networks is completely designed in object-oriented programming technology. The equations, which describe the physical flow-pressure conditions through every cross point are assumed to be continuous and the energy of every closed loop of analyzed network conserved. The system of non-linear equations was linearized by LTM (Linear Theory Method). The algorithm for numerical module LTM and the method for solution of sparse matrix are developed at the Faculty of Chemistry and Chemical Engineering, University of Maribor, Slovenia.
Keywords:
Fluid mechanics, gas pipe networks, linear method, non-linear programming, pressure losses
Full Paper, pp. 477-484

 

Mathematical Model for Small Satellites, using Attitude and Rotation Angles
by Teodor-Viorel Chelaru, Cristian Barbu, Adrian Chelaru

Abstract: The paper purpose is to present some aspects regarding the calculus model and technical solutions for small satellites attitude control. Mathematical model is put in nonlinear and linear form. The linear form is used for attitude control system synthesis. The attitude control system obtained is used in nonlinear form in order to maintain desired attitude. A few numerical simulations are made for standard input and the satellite behavior is obtained. The satellite model presented will be with six DOF and uses Cartesian coordinates. At this item, as novelty of the work we will use the rotation angles to describe the kinematical equations. Also this paper proposes a Fourier linearising of Trigger Schmidt element used for applying the command moment. The results analyzed will be the rotation angles of the satellite as well the rotation velocity. The conclusions will focus the comparison between results obtained using different attitude control system, and the possibility to use such system for small satellite.
Keywords:
Automatic, Attitude control system, Mathematic model, Simulation, Small satellite
Full Paper, pp. 485-501

 

A Database Normalization Tool using Semantic Web Technologies
by Lule Ahmedi, Edmond Jajaga

Abstract: The Semantic Web technologies have just recently urged the need to touch and reinterpret many application areas. On the other side, there are currently few systems for normalization of relations within a database, which are also rarely used, either by database designers, or as a teaching aid at universities. This paper introduces a system for normalization of relations as integral part of the machine-understandable knowledge base on the Web, as conceived by the Semantic Web. We have adopted the semantics for the ontology layer of our normalization system and made some findings regarding the rule layer of our system. The main challenges appear at the rule layer, since there is not a single rule system which satisfies all of our needs. The solutions are provided in different rule systems, mainly on the Semantic Web Rule Language, for issues like: knowledge base modifications, negation, open world assumption, and disjunction.
Keywords:
Logic programming, Normalization of relations, Ontologies, Prolog, Rules in Semantic Web
Full Paper, pp. 502-517

 

Genetic Algorithm based Integral Sliding Surface Design and Its Application to Stewart Platform Manipulator Control
by S. Dereje, Mahantesh K. Pattanshetti, Anamika Jain, R. Mitra

Abstract: Integral sliding mode control has the potential to solve some of the drawbacks of simple sliding mode but the design of the integral sliding surface for nonlinear systems having unmatched uncertainty is a difficult task. In this paper, a design method using genetic algorithm is proposed and its effectiveness is tested using highly nonlinear system having unmatched uncertainty. The design of the integral nonlinear sliding surface is formulated as an optimization problem which minimizes the error between the nominal and perturbed system and an optimal gain is found using genetic algorithm. Then the problem of trajectory tracking control of Stewart platform manipulator is employed as a test bed. The controller is implemented in task space and joint space/task space hybrid and performances were compared. Simulations showed that the genetic algorithm based integral sliding mode controller has superior performance than existing controllers. Furthermore joint/task space hybrid implementation gives slightly bigger mean square error value in some directions but needs a smaller control effort compared to the pure task space implementation.
Keywords:
Genetic algorithm, Integral sliding mode control, Nonlinear control, Robust control, Sliding mode control, Stewart platform manipulator
Full Paper, pp. 518-528

 

The Methodology of Patternless Casting Manufacturing
by Wei-Yuan Dzan

Abstract: FRP ship is high technology fine art. It has a huge amount of technology and complicated high-value production. However, FRP ship form design, manufacture to navigation, takes a long time. Take a forty meter ship for example, this takes an average eight to twelve months to manufacture in Taiwan, and only takes three to six months in SuehZan China. Even though the quality level exceeds that of its Chinese counterpart, the production time is a lot different, and it’s also a reason why ship owners from other countries hesitate to give countermands. In order to improve our ship-making efficiency, the main task for us is to investigate and strive to shorten our production times. The strength in making our ships is high technology specialized designing, choosing exacting material and precise processes, belonging to a typically unitary small amount of production. The crucial production of this industry is developing large ship patterns, if we can use five axes, NC control and the manufacture facilities, we can obtain optimum ship design by making 3D models through the CAE directly. Using CAD/CAM software can turn the curve surfaces of the NC machine program to accomplish producing a ship pattern. The design production system of 'Patternless Casting Manufacturing ‘PCM', is exactly turning the production of ship pattern designs into a digitized form, departing fromthe traditional way of diagnosing ship shapes and carpentry. Not only can this control the precise shape and flow line of the design but it can also save over 60%of the time used in developing patterns.
Keywords:
Patternless Casting Manufacturing, the best design of the ship, NC machine
Full Paper, pp. 529-536

 

Impact of Market Dynamics on Performance and Internal Dynamics of Job-Shop Systems
by Bernd Scholz-Reiter, Christian Toonen, Dennis Lappe

Abstract: The importance of dynamics in production and logistics networks has increased steadily over the last years. This applies for internal and external dynamics alike as both often affect the system’s performance. In this article we study the impact of external dynamics on performance and internal dynamics of job-shop systems. For this purpose we develop and discuss a continuous model of a job-shop system and examine the feasibility of a load-oriented capacity design. Subsequently, we employ the developed model to study the impact of external fluctuations on the system’s behavior and key performance measurements.
Keywords:
Continuous Model, Job-Shop System, Load-Oriented Design, Market Dynamics, Performance
Full Paper, pp. 537-544

 

Development of a Hybrid Control Approach for Automotive Logistics Based on Close to Real-Time Information Management
by Bernd Scholz-Reiter, Dennis Lappe, Christian Toonen, Carmen Ruthenbeck

Abstract: Nowadays, logistics processes are mostly controlled by applying a central control approach. This approach often neglects changing conditions within the supply chain after planning. Therefore, regarding an increasingly complex and dynamic nvironment, the central control approach often turns out to be inflexible and not manageable satisfyingly. Here, a decentralized approach, so-called autonomous control, provides an alternative as it enables logistics objects to react autonomously and flexibly on changing conditions. Herein, it is indispensible to exchange information with other participants of a supply chain to identify changes which occurred after planning. Both, the centralized and the autonomous control approach, feature advantages and disadvantages regarding performance and information transparency. A hybrid control approach promises the combination of these advantages. In this paper we introduce the characteristics of automotive networks and related control approaches. By referring to a practical example we present a possible specification of relevant information in automotive logistics and underline the importance of a welldesigned information management. Following this, we present a development process to derive an efficient method for hybrid control.
Keywords:
Automotive Logistics, Autonomous Control, Close to Real-Time Information Management, Hybrid Control
Full Paper, pp. 545-552

 

Automatic Device for Measuring Minority Carrier Lifetime in Multicrystalline and Monocrystalline Silicon Using Noncontact Microwave Method
by V. M. Vladimirov, V. G. Konnov, V. V. Markov, N. S. Repin, V. N. Shepov

Abstract: An automatic device for minority carrier lifetime measurements in multicrystalline and monocrystalline silicon by noncontact microwave method has been developed. To increase the accuracy of the minority carrier lifetime measurements a microwave module has been designed. To extend the resistivity range of the silicon samples measured a microwave sensor has been developed. The application results of this device for noncontact measurements of the minority carrier lifetime in monocrystalline and polycrystalline silicon is presented.
Keywords:
Microwave sensors; Elemental semiconductors; Microwave devices; Microwave measurements; Non-contact method
Full Paper, pp. 553-560

 

A Real-time and Vision-based Methodology for Processing 3D Objects on a Conveyor Belt
by Michael Weyrich, Martin Laurowski, Philipp Klein, Yongheng Wang

Abstract: The objective of this paper is to present an industrial vision-based methodology for processing 3D objects being conveyed by a constant velocity. This methodology employs a camera system and a robotic system. The object on the conveyor is firstly captured by camera system. The geometry and texture of object are further estimated and analyzed, in order to indentify defective surface and its location with reference to the object geometry. These efforts are instructive to generate a path plan for processing defective objects, which is implemented by the robotic system. The strength of this methodology is to combine vision-based defect detection and automated path planning that make it flexible to objects with variant geometries without the expense of operation time. In food industry this methodology is competent to reduce wastes.
Keywords:
Real-time, vision-based, optical inspection, 3D objects, conveyed objects, food industry, food processing, surface defects detection, geometry estimation, path planning
Full Paper, pp. 561-569

 

Technical Aspects of the Integrated Management Information System for Educational Institutions
by Valeri Pougatchev, Ashok B. Kulkarni

Abstract: This paper briefly describes several technical aspects and general structure of the Integrated Management Information System (IMIS) for Educational Institutions, proposed by authors. Authors consider the IMIS as a full management system for educational institutions that includes strategic, academic, and financial planning and management components. This approach will allow the institution to respond promptly to real-world challenges and opportunities that might affect its short- and long-term strategies. Some of authors’ original technical and security solutions of the IMIS have been practically implemented in the e-Management Control and Evaluation System (e-MCES) in the University of Technology, Jamaica (UTech). Solutions, which have been implemented in the e-MCES do not depend on size of the institution and on diversity of Academic and non-Academic roles and can be implemented to any educational institution with different structure and educational policy or to some part of it without recompiling it or with little adjustments. This allows step-by-step deployment of the system without affecting currently working mechanism of management.
Keywords:
Integrated Management Information System, e-MCES, .NET technology, Multitier Architecture, Object-Oriented Approach, Role-based security, Navigations, Connection Pooling, Just-in-Time Menu Generator.
Full Paper, pp. 570-583

 

Issue 6, Volume 5, 2011

Robust Control Problem as H2 and H∞ Control Problem Applied to the Robust Controller Design of Active Queue Management Routers for Internet Protocol
by Ichrak Tolaimate, Nourredine Elalami

Abstract: During the last years, the Internet Application (Remote Flexible Control and Instrumentation, Telecontrol...) has retained the attention of Control researchers for modeling and studying the congestion control of TCP/IP (Transfer Control Protocol/Internet Protocol) networks. The controllers proposed in the literature such as RED (Random Early Detection) or PID (Proportional Integrate Derivative) or H2/H? (H2 norm/H infinity norm), give good performance under certain conditions, but they become unstable if the input delay or/and the parameters of the networks change beyond some limits. Different papers have treated the H2/H? robust control problem, but in this paper, adding to formulate and solve the standard robust control problem as an H2/H?, and synthesize corresponding controllers H2, H? and mixed sensitivity controller, we will show how the Routh –Hurwitz criterion is weak in front of the small gain theorem, and does not guarantee the robustness of the system.
Keywords:
AQM, controller, fragility, H2, H∞, Robust Control, Routh-Hurwitz, sensitivity, TCP
Full Paper, pp. 683-691

 

Data Acquisition System for an Experimental Setup Used for Measuring the Soil Drainage’s Parameters
by Constantin Buta, Carmen Maftei, Cornel Ciurea

Abstract: An automated data acquisition system was developed using National Instruments (Austin, TX) hardware and LabVIEW software to understand the behavior of water movement in the unsaturated zone, that lies between ground surface and the saturated zone below, which is important for designing soil drainage. Thus a drainage experiment with a physical model was conducted in laboratory to examine water flow to a subsurface drain and to acquire experimental data about the water flow characteristics of layered soils to serve as a base for numerical analyses. In order to reduce analysis time and improve data consistency, an automatic tool (National Instruments LabVIEW software) to acquisition data and their analyses have been developed.
Keywords:
data acquisition system, drainage physical model, LabVIEW software, soil hydraulic properties
Full Paper, pp. 692-700

 

A Bio-Inspired Collision Avoidance System Concept for People with Visual Disabilities
by Mihai-Emanuel Basch, Robert Istvan Lorincz, David George Cristea, Virgil Tiponut, Ivan Bogdanov

Abstract: Nature offers a great source of inspiration to create robust systems that can assist humans to achieve different tasks. Neuromorphic engineering is an emerging field and when it comes to create a device that could assist a blind or a visually impaired human and also replace the traditional tools like white canes or guiding dogs, this can be really challenging. Even if insects are considered inferior species in comparation with vertebrates, they poses a visual system that colud be used in such an applications. An important condition for a person to move freely in an enviroment is to be able to detect any obstacle which may interfere with the trajectory of motion in order to avoid a possible collision with that obstacle. This article presents a possible implementation of a collision avoidance system inspired from the insects visual system with some specific modifications, in order to be useful for human applications in an real enviroment.
Keywords:
bio-inspired, insects, vision, collision detection, obstacle avoidance, EMD, Reichardt correlator
Full Paper, pp. 701-709

 

The Design of the Chosen Shelters and Their Construction and Modifications under the Auspices of the Municipality
by Lucie Jurikova, Jakub Rak, Milan Adamek

Abstract: This contribution outlines the design methods used for the chosen shelters including all necessary information and the basic parameters for the calculations for the protective elements. In the proposed design the modifications are presented by means of AutoCad software. The article is also devoted to issues of the provision of materials in the event of an emergency in order to improve the protective characteristics of the shelters. Possible methods for the provision of materials are described through the use of schematic diagrams. In the final section of the article figures created in 3D using AutoCad software can be found in order to provide easier visualisation.
Keywords:
Designing, population protection, sheltering, protective characteristics, AutoCad
Full Paper, pp. 710-717

 

Influence of Temperature Fluctuations, Measured by Numerical Simulations, on Dust Resuspension Due to L.O.V.As
by M. Benedetti, P. Gaudio, I. Lupelli, A. Malizia, M. T. Porfiri, M. Richetta

Abstract: ITER will be the first challenge to demonstrating licensable fusion safety and environmental potential of fusion and thereby provide a good precedent for the safety of future fusion power reactors. In next step devices, dust will play an important role in determining their safety and operational performance. By the nature of its operation, a Tokamak generates aerosol particulate, broken flakes, globules, chunks, and other debris, that may affect its safety and operational performance so nuclear fusion safety field requires the development of specific codes or additional validation of existing ones to deal with all fusion specific conditions (typical temperature ranges of the plants, the potential use of specific cooling fluids, high flux of highly energetic neutrons, large amount of tritium and dust, the use of specific materials like W, Be, V). This work is intended to contribute towards improving the understanding of processes taking place during air LOVA. The simulation of LOVA scenario is a challenging task for today numerical methods and models because it involves three dimensional geometry with large volume. The research activity has been carried out in the framework of EURATOM-Quantum Electronics and Plasma Physics group of University of Rome ―Tor Vergata? and ENEA Fusion Technology Department at Frascati National Laboratory. Numerical simulation and experimental activities have been carried out in strong correlation in order both to understand the capabilities of computational codes and to predict correctly the characteristics of the flows during a LOVA event. Obtained results are compared to experimental data provided by STARDUST facility. STARDUST facility is selected both for the model development phase and validation case. The adopted code should has the capability to treat the main physical phenomena occurring during a LOVA event in particular the authors will present the results related to the influence of temperature variations.
Keywords:
ITER, Velocity, Temperature, Simulation, LOVA, Pressurization rate, STARDUST
Full Paper, pp. 718-727

 

Multi-Objective Optimization Using Fuzzy Evolutionary Strategies Optimization
by Khalid N. E. A., Bakar N. A., Ismail F. Sh., Dout N. S. M.

Abstract: This paper proposes EDiMƒESO (Electrical Discharge Machine using Fuzzy Evolutionary Strategies Optimization) as a multi-objective optimization to control parameters in Electrical Discharge Machine (EDM). EDM is engineering machinery which is widely used in manufacture mould, die, automotive, aerospace and surgery components. EDM performance is measured by three output performance which is Material Removal Rate (MRR), Tool Wear Rate (TWR) and Surface Roughness (SR). EDiMƒESO learning rate is calculated based on performance of the input parameter setting involving the calculation of current (A), pulse time on (μs) and pulse time off (μs) while other parameters are set to constant. EDiMƒESO is a hybrid of evolutionary strategies (ES) technique (as the multi-objective algorithm) and dynamic fuzzy (as the fitness to predict the most appropriate multi-objective optimization parameter setting). EDiMƒESO multi-objective is proven to be successful in achieving multi – objective optimization.
Keywords:
Evolutionary Strategies, Electrical Discharge Machine (EDM), Dynamic Fuzzy, multi – objective optimization, Material Removal Rate (MRR), Tool Wear Rate (TWR), Surface Roughness (SR)
Full Paper, pp. 728-737

 

The Pricing Method of the Purchase Option by the Book Value for Equipment Service
by Shigeyuki Tani, Tadasuke Nakagawa, Norihisa Komoda

Abstract: In the equipment service some users appear who want to buy the equipment. But, the equipments which users want to buy are high performance. Venders want to sale by the time value, but users want to buy by the book value. So the problem occurs that the price negotiation becomes a rough. To this problem we service the purchase option by book value. In this paper we propose the pricing method of the purchase option using the real option evaluation. And we evaluated the value of the purchase option for the energy sercie by this method. By our method the price negotiation becomes unnecessary, and the profitability of vender can be saved by the right sales.
Keywords:
Equipment service, Real option, Book value, Time value, Price negotiation
Full Paper, pp. 738-745