Effective and reliable assessment approaches to computational thinking in secondary education are demand. This paper uses a guided technological pedagogical content knowledge (TPACK) framework, incorporating visual execution environment (VEE) Scratch project for school students as method teach assess thinking. The objective is investigate if programming concepts can be improved upon following t...

He reviewed the domains and examples of virtual machines, and the origins of virtual machine concepts. He said that different interest groups, such as OS developers, compiler developers, and application programmers have different perspectives on virtual machines. System virtual machines provide a system environment that is constructed at the ISA level. Process virtual machines are constructed a...

During 1995, infectious disease epidemics in Latin America and the Caribbean received wide publicity: dengue throughout the region, Venezuelan equine encephalitis (VEE) in Venezuela and Colombia, and hemorrhagic fever in Nicaragua. Increased awareness of these diseases followed extensive reports in the scientific community about the threat of emerging infections (1,2). Are infectious diseases i...