Heuristic Evaluation (HE) is used as a basis in developing a new technique to evaluate usability or
educational computer games known as Playability Heuristic Evaluation for Educational Computer Game (PHEG). PHEG was developed to identify usability problems that accommodate five heuristics, namely, interface, educational elements, content, playability and multimedia. In HE process, usability problems are rated based on severity score and this is followed by presentation of a mean value. The mean value is used to determine the level of usability problems; however, in some cases, this value may not accurate because it will ignore the most critical problems found in a specific part. In developing PHEG, a new quantitative approach was proposed in analyzing usability problems data. Numbers of sub-heuristics for each heuristic involved were taken into account in calculating percentage for each heuristic. Functions to calculate critical problems were also introduced. Evaluation for one educational game that was still in development process was conducted and the results showed that most of the critical problems were found in educational elements and content heuristics (57.14%), while the least usability problems were found in playability heuristic. In particular, the mean value in this analysis can be used as an indicator in identifying critical problems for educational computer games.
Safety Intervention Need Analysis System (SINAS) is a web-based safety management program that aspires the identification for the need of construction safety intervention. It can be accessed through the website www.sinas.org. This first phase of SINAS project development only focus on safe design intervention. SINAS was created to provide assistance for safety practitioners in identifying the need of safe design intervention. This was put forward through the investigations of construction accidents that relate to design. The SINAS process of need analysis are carved up to six steps i.e. user information, accident details, accident evaluation, result of the need analysis, construction design intervention and safety intervention need analysis report. At the end of the process, Safety Intervention Need Analysis Report will be generated. This report is an essential document to proof the need of safe design intervention. Additionally, SINAS also offers recommendations for construction designers and professionals on suitable safe design intervention to prevent construction accidents and minimises construction risks.