Proper management of requirements is crucial to successful development software within limited time and cost. Nonfunctional requirements (NFR) are one of the key criteria to derive a comparison among various software systems. In most of software development NFR have be specified as an additional requirement of software. NFRs such as performance, reliability, maintainability, security, accuracy ...

In developing collaborative learning application, students’ collaboration is one of the most important features that allow them to communicate and share knowledge virtually. order ensure effective student interaction, developers are responsible for identifying social presence requirements by eliciting users’ needs in sustaining interaction. This paper aims highlight elicitation process non-func...

A system can have adequate functionality, but inadequate usability because it is too difficult to use. The purpose of usability requirements is to guard against that. This paper shows six styles for usability requirements seen in practice or recommended by experts. For each style we discuss how we can verify the requirements, how we can use them during development, how we elicit the data for th...

Cloud computing represents a solution for applications with high scalability needs where usage patterns, and therefore resource requirements, may fluctuate based on external circumstances such as exposure or trending. However, in order to take advantage of the cloud’s benefits, software engineers need to be able to express the application’s needs in quantifiable terms. Additionally, cloud provi...

Studies have shown that finding defects in a software system is much cheaper in terms of both money and time spent when done during requirements analysis, as opposed to development or testing. To this end, significant advances have been made in the early detection of system defects. However, research on exposing unexpected system behaviors is relatively scant, especially regarding to non-functi...