Lessons and challenges from software quality assessment: The case of space systems software

Software development activities have continued to be plagued by a number of problems even with the availability of so many esoteric software technologies and paradigms such as object oriented development, etc.Several studies can be traced back to the software processes adopted. Other contributing factors include lack of knowledge of available systems standards, tools and techniques employed by system practitioners. This paper presents lessons and challenges gained over the last 10 years of experience as software system administrator as well as lecturers in the computer science department. Over this period of time, we have managed a number of in-house and purchased project software amongst them are banking, airtime billing, human resource, result computation etc. We discussed these lessons and challenges across two measurable  characteristics namely quality of design (life cycle stages) and quality of conformance. Finally, we also recommended the lessons and challenges from software quality management for space system software

A Petri Net Computational Model for Web-based Students Attendance Monitoring

COMMUNICATION IN PHYSICAL SCIENCES 1(1): 21-27 Author: F. S. Bakpo Monitoring student's attendance in classes is necessaryfor proper assessment of their understanding and performance in a course module. Attendance nzonitoring in a manual teaching ånd leanüng setting is easier than in web-based. The major reason for the inherent difficulty is that the latter provides virtual teaching and learning relationship in which students are not seen, whereas thefonner involves physical orface-to-face teaching and learning. Research and evidence showed that good attendance has a direct impact on student's success in a course module. The paper presents an overview of studentteacher relationship in an educational environment. Subsequently, a Inathematical model description using Petri nets is provided to capture web- based student attendance. The entpirical exanzple and corresponding output using Microsoft Excel justified the modeling power of Petri nets. The framework presented can be embedded into custom online academic programnte to track student attendance in course modules