Affecting multiple parts in software systems, security requirements often tangle with functional requirements. In order to separate crosscutting concerns and increase modularity, we propose to represent security requirements as aspects that can be woven into functional requirements. Using problem frames to model the functional requirements, weaving is achieved by composing the modules represent...

Efficient implementation of multiple dispatching is critical with regard to the success of the multimethods, which are recognized as a powerful mechanism in object-oriented programming languages. However, the current known time-efficient approaches suffer of poor space efficiency. This paper presents a novel multiple dispatching approach that substantially improves the space efficiency over the...

One of the difficulties that goal-oriented requirements analyses encounters is that the efficiency of the goal refinement is based on the analysts’ subjective knowledge and experience. To improve the efficiency of the requirements elicitation process, engineers need approaches with more systemized analysis techniques. This paper integrates the goal-oriented requirements language i* with concept...

one of the modern paradigms to develop an application is object oriented analysis and design. in this paradigm, there are several objects and each object plays some specific roles in applications. in an application, we must distinguish between procedural semantics and declarative semantics for their implementation in a specific programming language. for the procedural semantics, we can write a ...

Introduction During the past several years the research under the banner of “GeoComputation” has been developed in an open and diverse manner, with a wide range of techniques and application domains been addressed from various perspectives. While plurality and inclusiveness have been regarded as the strength of GeoComputation (Gahegan 2000), however, the diversity of expertise (which is usually...

The initial edition of this book was published in 1974, as one of the first textbooks that tried to teach modern biochemistry with a clinical perspective. The recently revised fifth edition continues to be one of the few textbooks in biochemistry that focuses primarily on clinical aspects of biochemistry and thus remains a useful book for health science students. Interestingly, the first chapte...

Synchronization gained great importance in modern applications and allows mobility in the context of information technology. Users are not limited to one computer any more, but can take their data with them on a laptop. Two common architectures have been developed recently, the Data-Centric Architecture as well as the ServiceOriented Architecture. This paper compares two existing technologies f...