Appropriate operation of protection system is one of the effective factors to have a desirable reliability in power systems, which vitally needs routine test of protection system. Precise determination of optimum routine test time interval (ORTTI) plays a vital role in predicting the maintenance costs of protection system. In the most previous studies, ORTTI has been determined while remote bac...

The aim of the relay coordination is that protection systems detect and isolate the faulted part as fast and selective as possible. On the other hand, in order to reduce the fault clearing time, distance protection relays are usually equipped with pilot protection schemes. Such schemes can be considered in the distance and directional overcurrent relays (D&DOCRs) coordination to achieve faster ...

the world health organization’s (who’s) world health report 2010, “health systems financing, the path to universal coverage,” promoted universal health coverage (uhc) as an aspirational objective for country health systems. yet, in addition to the dimensions of services and coverage, distribution of coverage in the population, and financial risk protection highlighted by the report, the conside...

introduction one of the most important factors that encourages consumers to purchase goods or use services, and make them choose one of them among various goods and services, is the design of products and services or their packaging. due to this importance, intellectual property rights protect the design of goods and services or their packaging. however, this protection is not limited to one br...