Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 28, No. 10 (October 2015) 1439-1446   

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  DETERMINISTIC MEASUREMENT OF RELIABILITY AND PERFORMANCE USING EXPLICIT COLORED PETRI NET IN BUSINESS PROCESS EXECUTION LANGUAGE AND EFLOW
 
H. Nematzadeh and Z. Nematzadeh
 
( Received: February 09, 2015 – Accepted: September 03, 2015 )
 
 

Abstract    Today there are many techniques for web service compositions. Evaluation of quality parameters has great impact on evaluation of final product. BPEL is one of those techniques that several researches have been done on its evaluation. However, there are few researches on evaluation of QoS in eflow. This research tries to evaluate performance and reliability of eflow and BPEL through mapping them to explicit colored petri net. To achieve this goal, colored petri net was enhanced with a new block of immediate transition, called Pick split/join. Then, a transformation table was proposed to show the mapping rules from basic and structured activities in eflow and BPEL to colored petri net. Finally, theory of probability was applied on the model to measure QoS. Web Servie Evaluation Tool (WSET), a case tool in Java programming language, was developed for further simulation.

 

Keywords    Web Service Compositions – BPEL – eflow – Colored Petri Net – Reliability - Performance

 

چکیده    امررزه تکنیک‌های مختلفی‌ برای ترکیب سرویس‌های وب وجود دارد. ارزیابی پارامتر‌های کیفی تاثیر مهمی‌ در تاثیر محصول نهایی دارد. BPEL یکی‌ از آن تکنیک هاست که تحقیقات متعددی بر روی ارزیابی آن صورت گرفته است. گرچه تحقیقات اندکی‌ روی ارزیابی صفات کیفیeflow انجام شده است. در این تحقیق کارایی و قابلیت اطمینانBPEL وeflow از طریق نگاشت آن به شبکه‌های پتری رنگی‌ صریح ارزیابی شد. برای نیل به این منظور ابتدا شبکه‌های پتری رنگی‌ با یک ترنزیشن بلادرنگ به نامPick split/join توسعه داده شد. سپس جدول نگاشت برای نشان دادن قواعد نگاشت از فعالیت‌های ساده و ساختیافته به شبکه‌های پتری رنگی‌ ارائه شد. در انتها از تئوری احتمالات جهت اندازه گیری کیفیت سرویس استفاده شد. ابزار ارزیابی سرویس‌های وب (WSET)، ابزاری به زبان برنامه نویسی جاوا ، جهت انجام شبیه سازی توسعه داده شد.

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