Objective: Our objective is to describe how softwareengineering might benefit from an evidence-based approach and to identify the potential difficulties associated with the approach. Method: We compared the organisat...
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Objective: Our objective is to describe how softwareengineering might benefit from an evidence-based approach and to identify the potential difficulties associated with the approach. Method: We compared the organisation and technical infrastructure supporting evidence-based medicine (EBM) with the situation in softwareengineering. We considered the impact that factors peculiar to softwareengineering (i.e. the skill factor and the lifecycle factor) would have on our ability to practice evidence-based softwareengineering (EBSE). Results: EBSE promises a number of benefits by encouraging integration of research results with a view to supporting the needs of many different stakeholder groups. However, we do not currently have the infrastructure needed for widespread adoption of EBSE. The skill factor means softwareengineering experiments are vulnerable to subject and experimenter bias. The lifecycle factor means it is difficult to determine how technologies will behave once deployed. Conclusions: softwareengineering would benefit from adopting what it can of the evidence approach provided that it deals with the specific problems that arise from the nature of softwareengineering.
Recently, Web services have become a new technology trend for Enterprise Application Integration (EAI) and more and more applications based on Web services are emerging. One of the problems in using Web services in bu...
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ISBN:
(纸本)0769521673
Recently, Web services have become a new technology trend for Enterprise Application Integration (EAI) and more and more applications based on Web services are emerging. One of the problems in using Web services in business applications such as logistics is services composition automatically and efficiently. In this paper, we present a Dynamic, Demand-Driven Web services Engine called D3D-Serv to implement composite service functionality that is used to dynamically build composite services from existing services according to different business logics and requirements. In this D3D_Serv framework, the most challenging function to implement is dynamic selection of service providers at run time. The highly dynamic and distributed nature of Web services often makes some service providers overloaded at certain times while others idle. To solve this problem, we propose an efficient services selection and execution strategy that is based on the queuing theory and can provide guarantees for the QOS (Quality of Service) under provider's limited resources. Preliminary experimental results have shown that this algorithm is effective.
Due to not only proven stability and reliability but a significant investment and years of accumulated experience and knowledge, legacy systems have supported the core business applications of a number of organization...
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The object location problem has been solved using the repeated genetic algorithm by determining the number of independent runs to guarantee a given probability of success. However, this number is still too large for t...
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Object-Oriented Information System (OOIS) is an information system that employs object-oriented technologies in system design and implementation. Recent research advances and industrial innovations in distributed syst...
Object-Oriented Information System (OOIS) is an information system that employs object-oriented technologies in system design and implementation. Recent research advances and industrial innovations in distributed system modeling and Internet applications have enabled OOIS design and implementation to be carried out on the basis of new technologies and platforms. This special section on Modeling Object-Oriented Information Systems presents readers with a set of best papers selected from the 7th International Conference on OOIS. Reviews of theories and applications of OOIS’s are also provided for predicating trends in OOIS modeling.
We present an efficient methodology for the calculation of the transition matrix for 3D-OSEM iterative image reconstruction, including a model of the gamma-event detection in crystal with photoelectric and Compton sca...
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We present an efficient methodology for the calculation of the transition matrix for 3D-OSEM iterative image reconstruction, including a model of the gamma-event detection in crystal with photoelectric and Compton scatter interaction. The method is adapted for high resolution PET cameras composed of pixelated scintillator crystal arrays and with axial symmetry. 2D-OSEM algorithm, in combination with rebinning methods such as SSRB and FORE, can also be performed using a subset of this transition matrix
The routing algorithms for multimedia communication should use for routing more than one QoS parameter. This is because new services such as video on demand and remote meeting systems require better QoS. However, the ...
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ISBN:
(纸本)0769520510
The routing algorithms for multimedia communication should use for routing more than one QoS parameter. This is because new services such as video on demand and remote meeting systems require better QoS. However, the problem of QoS routing is difficult and to find a feasible route with two independent path constraints is NP-complete. Also, QoS routing algorithms for broadband networks must be adaptive, flexible, and intelligent for efficient network management. In this paper, we propose a multipurpose optimization method for QoS routing based on Genetic Algorithm (GA). The simulation results show that proposed method has a good performance and is a promising method for QoS routing.
Reflector attack belongs to one of the most serious types of Distributed Denial-of-Service (DDoS) attacks, which can hardly be traced by traceback techniques, since the marked information written by any routers betwee...
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The focus of this paper is to propose a service-oriented multi-agent framework to better integrate Web services and agents. In the making of this framework, there are four main components: (1) a possibilistic Petri-Ne...
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The focus of this paper is to propose a service-oriented multi-agent framework to better integrate Web services and agents. In the making of this framework, there are four main components: (1) a possibilistic Petri-Nets (PPN) based service matchmaking mechanism for service discovery, (2) a service description language based on PPN for describing agent services and Web services, (3) a set of ontologies to facilitate the semantic matchmaking, and (4) an extension of tModels to bridge the Web services registered in UDDI to the PPN matchmaker.
Computational Grids are emerging as a new infrastructure for Internet-based parallel and distributed computing. They enable the sharing, exchange, discovery, and aggregation of resources distributed across multiple ad...
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