نتایج جستجو برای: energy system
تعداد نتایج: 2760013 فیلتر نتایج به سال:
cities are a focal point of energy consumption. accessibility to public services has a significant impact on the balance of public and private energy uses, which are two sectors that are directly affected by urban planning (the third is industrial). this paper establishes the relative magnitudes of service accessibility enhancement on urban energy efficiency in comparison to other factors, and ...
the application of e-learning systems - as one of the solutions to the issue of anywhere and anytime learning – is increasingly spreading in the area of education. content management - one of the most important parts of any e-learning system- is in the concern of tutors and teachers through which they can obtain means and paths to achieve the goals of the course and learning objectives. e-learn...
the application of energy absorbing systems in the structures are one of the main methods in attenuation of earthquake effects. in this paper, the vibration control of structures by using of tube inversion systems is considered. in this novel system, the energy is dissipated by the inversion of a metal tube. this energy dissipater has large energy absorbing capacity along with constant stiffnes...
the first motive for the determination and evaluation of an energy productionsystem is the need to change. such system is dynamic in nature and is influenced bymany factors such as age and physiological status of individual sheep or goat, quantityand quality of available feed and environment including the management systems.traditional pastoral resource assessments do not always account for the...
Energy harvesting from surrounding environment has been attractive for many researchers in recent years. Therefore, developing appropriate test apparatus to study energy harvesting mechanisms and their performance is of paramount importance. Due to their electromechanical characteristics, piezoelectric materials are used for harvesting energy from environmental vibrations. For optimum utili...
The atomic nucleus is a complex many-body system that consists of two types of fermion (neutron and proton). They are in the strong interaction. The statistical properties of energy levels and influence of strong force between these fermions are well described by random matrix theory. Resonance of energy levels depends on the Hamiltonian symmetry placed in one of the GOE, GUE and GSE ensembles ...
Energy harvesting from surrounding environment has been attractive for many researchers in recent years. Therefore, developing appropriate test apparatus to study energy harvesting mechanisms and their performance is of paramount importance. Due to their electromechanical characteristics, piezoelectric materials are used for harvesting energy from environmental vibrations. For optimum utili...
This paper investigates impacts of possible chances in energy policy and consumption behavior on optimal energy management and feasibility study of a hybrid energy system. The study was performed on a remote area near Esfarjan, a village located in Shahreza, Iran. In the main scenario, the current energy policy is applied while the consumption behavior of customers is studied by means of an inc...
nowadays energy has significant role in socio economic development of counties; any decision on energy sector may affect the broad area in societies. system approach in energy modeling as an efficient method is known by many researchers in management and planning in a country particularly in energy sector. also system dynamics is one of the efficient methods, for reason unique ability at solvin...
در این تحقیق اثر الکترونگاتیوی برای استخلاف های f, cl, no2 , cf3 برروی آروماتیسیته مولکول بنزن مورد مطالعه قرار گرفته است. nics, ase, homa, homo-lumo energy gapsشاخص هایی هستند که برای نمایش تاثیر استخلاف ها به کار برده می¬شوند.علاوه بر این الکترون های انتقالی توسط پیوند سیگما وپای نیز برای همه مولکول های استخلاف شده مورد نظر محاسبه شده¬اند.نتایج بدست آمده برای این روش ها با یکدیگر متفاوت است.ب...
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