نتایج جستجو برای: open local energy requirements
تعداد نتایج: 1686242 فیلتر نتایج به سال:
Hybrid AC/DC microgrids facilitate the procedure of DC power connection into the conventional AC power system by developing the distributed generations (DGs) technologies. The conversion processes between AC and DC electrical powers are more convenient by hybrid systems. In this paper, an energy management system (EMS) for a hybrid microgrid network is proposed due to the optimal utilization of...
The aim of present research was to identify applied requirements of Massive Open Online Course (MOOC) in Payam Noor University from a pedagogical perspective. In this research, qualitative research method and qualitative content analysis approach were used to analyze data. The components used were identified based on the review of documents and semi-structured interview tools. In order to revie...
Pyrolants are an important class of energetic materials which because of the high energy content and the solid fused residues, serve a remarkably wide range of military and civilian applications. Pyrolant incendiaries can be either fuel rich or provide a surplus of oxidizer to facilitate combustion of a target substrate. The requirements and characteristics of an incendiary pyrolant not clearly...
In this study time-dependent and spherically symmetric solutions of the Einstein field equations in an anisotropic background with a purely radial tension are presented. There exist three classes of solutions,1) An open spacetime with a wormhole at its center. 2) A conical spacetime. 3) A closed spacetime. These inhomogeneous solutions are reduced to FRW spacetimes in matter-dominated era, as...
Pipe systems are often used to transfer moderate to medium water volumes between reservoirs or from well fields to consumers. Such systems consisting of an arbitrary number of reservoirs or other types of sources and sinks are considered here. The Lagrangean optimization principle is used for the determination of all pipe diameters giving minimum total cost of the system, when the individual di...
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