Component-based programming is currently carried out using mainstream object-oriented languages. These languages have to be used in a highly disciplined way to guarantee flexible component composition and extensibility. This paper investigates abstractions for component-oriented programming on the programming language level. We propose a simple prototype-based model for first-class components o...

Computers are quickly taking over safety-critical functions in transportation systems. Not surprisingly, we are starting to experience incidents and accidents related to the software components in these systems, including a recent recall related to ABS failure. Software allows unprecedented complexity and coupling in these systems, and these factors are stretching our current engineering techni...

background: there can be little doubt that the construction is the most hazardous industry in the worldwide. this study was designed to modeling the factors affecting unsafe behavior from the perspective of safety supervisors. methods: the qualitative research was conducted to extract a conceptual model. a structural model was then developed based on a questionnaire survey (n=266) by two stage ...

FUNCTION Mass/energy flow and balance GENERAL FUNCTION Flow and storage of heat, etc. PHYSICAL FUNCTION States of components what? what? what? what? what?

and school staff. therefore, it is essential to pay continuous and specific attention to safety problems in schools. we identified 20 critical success factors (csfs) in the current study based on previous researches in order to achieve effective school safety. then these factors validated by 33 governmental high school administrators. this survey was conducted in tehran, among 96 governmental h...

Background: The effectiveness and adequacy of occupational health and safety management system should be monitored and evaluated at organization level on a regular basis. Safety audit has a clear role in the development of organizations safety management systems. Internal safety audit is a method to appraise to the management the current status of occupational health and safety at workplace. Se...