Specification in CTL+Past for Verification in CTL

Web Service Choreography Verification Using Z Formal Specification

Web Service Choreography Description Language (WS-CDL) describes and orchestrates the services interactions among multiple participants. WS-CDL verification is essential since the interactions would lead to mismatches. Existing works verify the messages ordering, the flow of messages, and the expected results from collaborations. In this paper, we present a Z specification of WS-CDL. Besides ve...

Iterative Verification Techniques for CTL Model Checking

A paradigm for automatic approximation/refinement in conservative CTL model checking is presented. The approximations are used to verify a given formula conservatively by computing upper and/or lower bounds to the set of satisfying states at each subformula. These approximations attempt to perform conservative verification with the least possible number of BDD variables and BDD nodes. We presen...

Incremental Verification Techniques for CTL Model Checking

Incremental Verification Techniques for CTL Model Checking

A paradigm for automatic approximation/refinement in conservative CTL model checking is presented. The approximations are used to verify a given formula conservatively by computing upper and lower bounds to the set of satisfying states at each sub-formula. These approximations attempt to perform conservative verification with the least possible number of BDD variables and BDD nodes. We present ...

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تحقیق حاضر به منظور بررسی کارآیی بین دو روش تدریس زبان انگلیسی با اهداف دانشگاهی به نامهای تدریس گروهی و تدریس انفرادی انجام شد. بدین منظور، سه کلاس انگلیسی با اهداف دانشگاهی مربوط به دانشجویان رشته جغرافیا، کامپیوتر و فقه و حقوق به روش گروهی توسط یک مدرس زبان انگلیسی و یک مدرس درس تخصصی در استان یزد در طول ترم پاییز سال تحصیلی 1390-1389 تدریس گردید. همزمان، سه کلاس زبان انگلیسی دیگر با اهداف د...