Sharif Digital Repository

With long-term evolution of large scale software systems, the study and engineering of architectural evolution becomes more and more important. In order to manage high level changes, the architects should plan the architecture evolution in a series of releases. Planning and analysis of architectural evolution is a challenge and plays a significant role in evolution management. An assessment solution could promote overall accuracy and quality of the evolution process. Compliance checking with expert-defined rules is a well-known assessment solution and could be applied in the field of architectural evolution. In this thesis, a solution is proposed in order to compliance check these evolution... 

In this study, the problem of pricing and inventory control for non-instantaneous deteriorating items with two separate warehouses is considered. One warehouse is owned and the other one is rented. The rented one has a higher holding cost due to better preserving facilities. In the literature, a common assumption is that the deterioration of items starts at the instant of their arrival, while in fact the majority of goods have a short time span for maintaining quality or original condition, during which no deterioration occurs. For non-instantaneous deteriorating items, the common assumptions may lead to the overvaluation of the total annual relevant inventory cost. In the present study a... 

Cooperative communications have been introduced to combat degrading effects of fading in wireless networks and attracted much attention recently. This technique provides distributed spatial diversity that enables energy-efficient transmission of information from source nodes to destination nodes via intermediate relay nodes. Most existing protocols, detection techniques and optimization methods in cooperative networks assume that perfect channel state information is available. While in practical situations, the estimates of the channels may only be known and for acquiring such knowledge, a fraction of power and bandwidth have to be spent for channel estimation using pilot symbols. In this...