The Learning Management System (LMS) has been created at a number of universities around the world to help bring students and faculty together without constraints traditional classroom. This study explained selection issues, differences between LMS LCMS, highlighted criteria. result article is an analysis popular CMS by selected criteria

The automobile emission exceeds the standard problem, is a world subject, only has technical analysis to be able obtain effective management. In vehicle aftermarket, maintenance main way control exhaust exceeding standard. Vehicle design and manufacturing factory with performance, running time, load changes constantly, parts of wear, deformation, aging, loss function other phenomena, performanc...