Digital retail payments have evolved during the last years mostly due to technology innovations. New actors enter the payments market, increase competition and threaten banks' dominance. Consumers' behavior is...
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ISBN:
(纸本)0955301807
Digital retail payments have evolved during the last years mostly due to technology innovations. New actors enter the payments market, increase competition and threaten banks' dominance. Consumers' behavior is critical within this context, since they are the ones that will finally adopt or reject a payment innovation. In this paper we propose a model of consumer behavior towards payment system selection based on multi-agent simulation. It is based on a multi-agent platform that models consumers as intelligent agents and formats their behavior according to rules extracted from past payments data, experts' knowledge and marketing research. Contributions from social science and network economics also refine the agent's behavior in order to simulate accurately the domain. this paper presents the overall model and an initial analysis of payments domain, defining major actors in the domain and their interpretation to agents.
In this paper there is presented the basic design of the hybrid simulation system for traffic in urban areas. this system is based on a JUTS system used for analysis of traffic in cities which is based on a microscopi...
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ISBN:
(纸本)0955301807
In this paper there is presented the basic design of the hybrid simulation system for traffic in urban areas. this system is based on a JUTS system used for analysis of traffic in cities which is based on a microscopic model of traffic flow. this type of traffic representation is very detailed but for larger areas consumes too much computation time. For that reason a new hybrid model is introduced. this model represents specific areas in low level of detail. the problem is to choose a suitable less detailed model that can be combined withthe actual one. In this paper there is presented the testing of the actual model and the construction of the less detailed model together with its connection into the actual system in order to construct the hybrid system.
theoretical modeling by means of Matlab Simulink program and experimental investigation of heat processes in the INR Linac drift tube tanks allow studying influence of these processes at the tank resonance frequency a...
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theoretical modeling by means of Matlab Simulink program and experimental investigation of heat processes in the INR Linac drift tube tanks allow studying influence of these processes at the tank resonance frequency and creating of the frequency control system model. At that, the main attention is paid to accordance of modeling results and processes in the real systems. In turn, creation of control frequency system model gives a possibility to optimize the structure and parameters of the control system, stabilizing tank resonance frequency, and increase the accelerator operation efficiency.
Simulation of the integrated urban wastewater system is a computationally-demanding task, and performing long-term simulations consequently takes a considerable time. Reduction of simulation times can be achieved by s...
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ISBN:
(纸本)0955301807
Simulation of the integrated urban wastewater system is a computationally-demanding task, and performing long-term simulations consequently takes a considerable time. Reduction of simulation times can be achieved by speeding up one or more of the submodels of the integrated system. In this paper the use of a fast neural network model instead of the mechanistic model of the wastewater treatment plant (WWTP) is proposed for this purpose. the neural network is trained on a sequence of treatment plant input/output data generated by the mechanistic model of the WWTP, i.e. it is a reduced model of the original WWTP model. As a result of model substitution a reduction of the simulation time by a factor of 23 was achieved. the results presented in this paper show that the errors introduced by the WWTP model substitution are of an acceptable level, confirming the practical usefulness of the proposed method.
this paper presents the results of a study concerning the evaluation of different decisions of a Satellite Operator leasing capacity to different customers requesting different services. the study was done for Hellas-...
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ISBN:
(纸本)0955301807
this paper presents the results of a study concerning the evaluation of different decisions of a Satellite Operator leasing capacity to different customers requesting different services. the study was done for Hellas-Sat (the Greek satellite operator) and addresses a real situation. Data concerning demands of several customers were collected using those available in particular organizations and corresponding to the area that Hellas-Sat covers. these data was first classified and statistically treated. Second a decision tree has been created where the statistical characteristics taken from the first part of the study, were used in order to derive optimal leasing policies/scenarios and characterize them in terms of both profit and risk. the final outcome is a decision making tool which can be used by a Satellite Operator in order to evaluate possible states, profits and associated risks.
During the last decade, collaborative commerce and human-centric systems concepts have been applied in several enterprise information systems. Many researchers have studied, developed and proposed architectures for su...
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ISBN:
(纸本)0955301807
During the last decade, collaborative commerce and human-centric systems concepts have been applied in several enterprise information systems. Many researchers have studied, developed and proposed architectures for such systems. In order to validate and verify the systems' architectures, researchers use various types of modeling and analysis techniques available. One well-recognized technique is WorkFlow-nets (AT-nets), which is based on Petri Nets. WF-nets focus on control flow and provide a powerful analysis mechanism to verify the correctness of workflow procedures. this paper discusses a human centered collaborative system (HCCS) that has a Web-based architecture and pays special attention to collaboration and human-centric issues. the system is modeled using Petri nets and workflow nets. the paper then introduces Symbolized workflow-nets (SWF-nets) which employ symbolized places, transitions and arcs to illustrate the complicated processes more effectively. Next, it presents an example, a college admission system, as a case study that can be implemented in the HCCS environment. We model the admission processes using SWF-nets to illustrate the validation and verification of the HCCS architecture.
Dynamics and globalization of modern markets force the business integration and building of various collaborative business structures (e.g., supply chains). the issues of modeling and optimization of such complex busi...
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the Java messaging service (JMS) is a means to organize communication among distributed applications according to the publish/subscribe principle. If the subscribers install filter rules on the JMS server, JMS can be ...
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ISBN:
(纸本)0955301807
the Java messaging service (JMS) is a means to organize communication among distributed applications according to the publish/subscribe principle. If the subscribers install filter rules on the JMS server, JMS can be used as a message routing platform, but it is not clear whether its message throughput is sufficiently high to support large-scale systems. In this paper, we investigate the capacity of the high performance JMS server implementation SunOneMQ by Sun Microsystems. In contrast to other studies, we focus on the message throughput in the presence of filters and show that filtering reduces the performance significantly. We also present a model that describes the service time for a single message depending on the number of installed filters and validate it by measurements. this model helps to forecast the systemthroughput for specific application scenarios.
this paper describes generic multi-agent systems architecture for an urban driving advisory system. this architecture is described as composed of basic role-oriented processes communicating though primitive interactio...
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ISBN:
(纸本)0955301807
this paper describes generic multi-agent systems architecture for an urban driving advisory system. this architecture is described as composed of basic role-oriented processes communicating though primitive interaction protocols. the architecture is aimed to provide an enabling communications framework upon which multi-agent system models can be organized and built to be used for an simulation of an urban map and to estimate the traffic behavior (to provide information about the best routes). the paper presents a hierarchical routing strategy for an Urban Driving Advisory system (UDAS), based on agent technology. UDAS assists the drivers to get the desired destination taking into account the current situation of traffic characteristics. It gives the estimated arrival time and the corresponding distance between a start and an arrival point. the necessary information is obtained from a real-time traffic control system (RTCS). the drivers could consult the advisory system using a variety of devices like mobile phones. the information given by the advisory system has the form of predefined short messages.
this paper presents details of an implementation of a computer simulation for the Target Motion Analysis problem where the error of time-delay measurements derived from passively sensed transients is modelled using a ...
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ISBN:
(纸本)0955301807
this paper presents details of an implementation of a computer simulation for the Target Motion Analysis problem where the error of time-delay measurements derived from passively sensed transients is modelled using a Gaussian-mixture probability density function. In order to improve accuracy of the simulation results, a pseudo-random number generator based on shift-register operations was implemented and compared to the standard C++ random number generator. Von Neumann's accepting-rejection method was used to generate the required non-uniform distribution function. the model was validated and its performance evaluated.
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