Sharif Digital Repository

Nowadays, the essentiality of appropriate modeling languages has become evident, and with the introduction of new concepts such as domain-specific languages, the need for systematic research on designing and engineering new modeling languages has increased significantly. Several modeling languages have been developed and employed over the years, but the area of modeling languages still suffers from the lack of a proper framework: There is a strong need for an engineering framework that specifies the detailed steps of language development, the input and output artifacts of each step, the techniques applicable to each step, and quantifiable methods for quality measurement. From a unified point... 

Software Product Line is known as a process of developing family of the software together. The methods of building a software product line is trying to capture commonality and variety of this family of software and form a product line based on them. Commonality of this family of the software allows us reuse in every aspect of the development of software. Nowadays, software architecture as a one of the most important aspect of software engineering, plays major role in specifying the tasks and clearing the relationship between people. It can divide large and complex system to some sub-system and overcome complexity of the system. Software architecture forms a basis for communication among... 

Due to the increase in size and complexity of software systems, choosing suitable software architecture is a fundamental issue. One of the most effective ways for designing and valuating software architectures is to adopt architectural styles. An architectural style is an approach for reaping the benefits of similarities that exist between various architectures. Adoption of architectural styles in the design process of a software system assures the employment of strength points of specifications that belong to each architectural style. However, selecting a suitable architectural style depends on different criteria. Therefore it makes the ... 

Software architecture has been known as one of the fundamental elements of effective software development process. In order to improve and optimize the software architecture design, many attempts have been made among which are introducing architectural patterns. Because of high advantages of service-oriented architecture, it is considered as one of the main interests of software developers. It should be noted, however, that getting advantages from service-oriented architecture is not possible without having an efficient management within its processes. In other words, using service-oriented architecture without considering its process management challenges, can lead to increased costs and... 

The architecture of a software system, its elements and the way they interact is a valuable treasure for understanding the system. If architecture description of a system is not available, working on its extraction and reconstruction should be done. For a software with huge size and vast complexity, architecture extraction by hand and without any predefined method is nearly impossible. So, it is essential for software architecture extractor to use a framework and a well-defined process related to it, for extracting the software architecture. It can help him to use automated tools as much as possible in addition to havingauniquelogicalstructureforperformingthearchitectureextractionprocess. In... 

Nowadays Software product line technology receives notable considerations due to great advantages of cutting the costs and time to market, and improvement of the quality of software products. Variability plays a key role in software products line. Quality attributes can be a source of variability in software products line, therefore having an approach to manage them is essential. Quality attributes should be considered in all parts of software development life cycle, started by capturing and modeling in an appropriate way, mentioning in architecture design and being used in final products configurations. In this research at first, the necessity of study of quality attributes in software... 

Making Decision about software architecture design is a multi-criteria problem which depends on different factors. One of the main problems in software architecture is the high cost and complexity of Decision making which is rooted in knowledge vaporiza-tion. In fact current developers of the system are not necessarily the primary designers of the architect. Thus, the system cannot be understood without the knowledge about the history of the architecture. Additionally, a good organization of knowledge will be helpful in terms of knowledge reuse and best practices which leads to low cost of architecture.Due to the importance of knowledge in software architecture, knowledge acquisition as well... 

Software architecture patterns present solutions for facing with architecture problems and help to document the architectural design decisions. But diversity, complexity, and required expertise for selecting an appropriate pattern, would cause some difficulties in using architectural patterns. Using an ontology for registration of architectural patterns playing an efficient role in solving those problems. But the mentioned difficulties make the process of constructing the architectural patterns ontology more complicated. This thesis proposes an approach that would consider the construction of the architectural patterns ontology from four perspectives in order to overcome the ontology... 

Considering the aggregation of software architecture design decisions, the decision on appropriate from, is important to the success of a software project. Hence, the software architects need reliable and accurate process for correct decision making which seeks to reduce risk and increase productivity. Furthermore, different stakeholders involved in the architectural design process and presence of cooperation between them for architecture decision making indicates the nature of collaborative activities related to architectural design. Effective collaboration among those involved in the design process not only will affect on the quality and accuracy of the architecture, but also accelerates... 

Proposing a comprehensive architecture for cloud federation with the aim of satisfying stakeholders the most, is one of the most challenging issues in this context. For an architecture to be comprehensive, requirements should be elicited thoroughly in early stages of architecture design. Since covering all requirements is a very complicated task, prioritization is considered to be a vital step which can help architects to focus on more important requirements in their design as well as to evaluate existing architectures. In this research, architecturally signifcant quality requirements of cloud federation for aggregated cloud architectures are studied and categorized. Moreover, elicited...