Service-Oriented Applications are being regarded as the main practical solution for distributed e... more Service-Oriented Applications are being regarded as the main practical solution for distributed environments. In such systems, though each service is able to response the user request independently, it is essential to compose them for supplying a compound value-added service enable us to address the complex requests. Since, there may be a number of compositions to providing the requested service, it is so important to find one whose properties are close to user’s desires. In this paper, a new approach for evaluating the service compositions is presented which attempts to obtain the user desires. This approach uses fuzzy logic to infer on the basis of quality measures ranked by user. .
Ionosphere is a part of the atmosphere which is formed due to solar ultraviolet radiation on the ... more Ionosphere is a part of the atmosphere which is formed due to solar ultraviolet radiation on the atmosphere. It continues from high altitudes to near the Earth's surface. It is divided into different layers such as D, E, and F and... due to the ionization rate and the density of electron, ions and some other factors. Ionosphere is known as an environmental plasma conditions. One of the interesting phenomena in the Ionosphere is the plasma occurrence of ES. This phenomenon is occasional and it may disappear in short time range. We are searching for the correlation between two phenomena as Es-plasma layer height and the earth geomagnetism activities. To do this, we study the correlation of these two parameters at the four main moon phases. When the moon is experiencing one of its main phases, the tide goes in and out to its maximum or minimum values. As the gravitational forces cause tide to occur through affecting the surface tension of the sea waters, they take the same effect o...
Grid environment is a service oriented infrastructure in which many heterogeneous resources parti... more Grid environment is a service oriented infrastructure in which many heterogeneous resources participate to provide high performance computation. One of the bug issues in the grid environment is the uncertainty among registered resources. Furthermore, in an environment such as ...
International Journal on Web Service Computing (IJWSC), 2012
Service-Oriented Applications (SOA) are being regarded as the main pragmatic solution for distrib... more Service-Oriented Applications (SOA) are being regarded as the main pragmatic solution for distributed environments. In such systems, however each service responds the user request independently, it is essential to compose them for delivering a compound value-added service. Since, there may be a number of compositions to create the requested service, it is important to find one which its properties are close to user's desires and meet some non-functional constraints and optimize criteria such as overall cost or response time. In this paper, a user-centric approach is presented for evaluating the service compositions which attempts to obtain the user desires. This approach uses fuzzy logic in order to inference based on quality criteria ranked by user and Genetic Algorithms to optimize the QoS-aware composition problem. Results show that the Fuzzy-based Genetic algorithm system enables user to participate in the process of web service composition easier and more efficient.
Page 1. 129 A Fuzzy-Based Approach for Selecting the Optimal Composition of Services According to... more Page 1. 129 A Fuzzy-Based Approach for Selecting the Optimal Composition of Services According to User Preferences Mahdi Bakhshi Department of Computer Islamic Azad University, Najaf Abad Branch Najaf Abad, Iran e-mail: mah.bakhshi@yahoo.com ...
Service-Oriented Applications are being regarded as the main practical solution for distributed e... more Service-Oriented Applications are being regarded as the main practical solution for distributed environments. In such systems, though each service is able to response the user request independently, it is essential to compose them for supplying a compound value-added service enable us to address the complex requests. Since, there may be a number of compositions to providing the requested service, it is so important to find one whose properties are close to user’s desires. In this paper, a new approach for evaluating the service compositions is presented which attempts to obtain the user desires. This approach uses fuzzy logic to infer on the basis of quality measures ranked by user. .
Ionosphere is a part of the atmosphere which is formed due to solar ultraviolet radiation on the ... more Ionosphere is a part of the atmosphere which is formed due to solar ultraviolet radiation on the atmosphere. It continues from high altitudes to near the Earth's surface. It is divided into different layers such as D, E, and F and... due to the ionization rate and the density of electron, ions and some other factors. Ionosphere is known as an environmental plasma conditions. One of the interesting phenomena in the Ionosphere is the plasma occurrence of ES. This phenomenon is occasional and it may disappear in short time range. We are searching for the correlation between two phenomena as Es-plasma layer height and the earth geomagnetism activities. To do this, we study the correlation of these two parameters at the four main moon phases. When the moon is experiencing one of its main phases, the tide goes in and out to its maximum or minimum values. As the gravitational forces cause tide to occur through affecting the surface tension of the sea waters, they take the same effect o...
Grid environment is a service oriented infrastructure in which many heterogeneous resources parti... more Grid environment is a service oriented infrastructure in which many heterogeneous resources participate to provide high performance computation. One of the bug issues in the grid environment is the uncertainty among registered resources. Furthermore, in an environment such as ...
International Journal on Web Service Computing (IJWSC), 2012
Service-Oriented Applications (SOA) are being regarded as the main pragmatic solution for distrib... more Service-Oriented Applications (SOA) are being regarded as the main pragmatic solution for distributed environments. In such systems, however each service responds the user request independently, it is essential to compose them for delivering a compound value-added service. Since, there may be a number of compositions to create the requested service, it is important to find one which its properties are close to user's desires and meet some non-functional constraints and optimize criteria such as overall cost or response time. In this paper, a user-centric approach is presented for evaluating the service compositions which attempts to obtain the user desires. This approach uses fuzzy logic in order to inference based on quality criteria ranked by user and Genetic Algorithms to optimize the QoS-aware composition problem. Results show that the Fuzzy-based Genetic algorithm system enables user to participate in the process of web service composition easier and more efficient.
Page 1. 129 A Fuzzy-Based Approach for Selecting the Optimal Composition of Services According to... more Page 1. 129 A Fuzzy-Based Approach for Selecting the Optimal Composition of Services According to User Preferences Mahdi Bakhshi Department of Computer Islamic Azad University, Najaf Abad Branch Najaf Abad, Iran e-mail: mah.bakhshi@yahoo.com ...
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