نتایج جستجو برای: conservation of energy principle

تعداد نتایج: 21254650  

Journal: :Entropy 2016
Guolong Chen Weimin Zhang

Abstract: Here, a new method is proposed to quantitatively evaluate the eddy current distribution induced by different exciting coils of an eddy current probe. Probability of energy allocation of a vector field is modeled via conservation of energy and imitating the wave function in quantum mechanics. The idea of quantization and the principle of circuit sampling is utilized to discretize the s...

2006
Matthew J. Hancock

We desire the heat flux through the boundary S of the subregion V , which is the normal component of the heat flux vector φ, φ n̂, where n̂ is the outward unit · normal at the boundary S. Hats on vectors denote a unit vector, n̂ = 1 (length 1). | | If the heat flux vector φ is directed inward, then φ n̂ < 0 and the outward flow of · heat is negative. To compute the total heat energy flowing across ...

2011
G. Takeda

Physical laws in classical physics have are deterministic in nature which implies that any isolated system such as the universe as a whole evolves in a deterministic way so that once we know the state of a system at a time states of the system in future will be uniquely predicted. This turns out to be violated by the uncertainty principle of quantum mechanics on the one hand and the presence of...

Journal: :اقتصاد و توسعه کشاورزی 0
صمد عرفانی فر منصور زیبایی مهدی کسرایی

in this study, the optimal cropping patterns based on individual aims are presented and followed by a multi-objective cropping pattern with emphasize on the use of conservation tillage methods in darab region presented. individual goals consisted of maximizing gross margin and food secin this study, the optimal cropping patterns based on individual aims were presented and followed by using a mu...

ژورنال: علوم آب و خاک 2018

River flow routing has been a significant issue in hydraulic engineering. The main goal of this research work was solving Saint-Venant equations by using the semi-implicit finite difference scheme and considering energy conservation principle at the discontinuous points of flow field. In this model, with the first order accuracy, the flux limiter scheme and Upwind for the scheme are used for th...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1390

abstract the variables affecting the nature of reading comprehension can be classified into two general categories: reader’s variables, and text variables (alderson, 2000). despite the wave of research on vocabulary knowledge as reader’s variable, the role of this knowledge in c-test as a text-dependent test and its interaction with lexical cohesion of the test as a text feature has remained a...

Journal: :Physical review 2023

Energy conservation has the status of a fundamental physical principle. However, measurements in quantum mechanics do not comply with energy conservation. Therefore, it is expected that more theory gravity -- one less incompatible should admit nonconservations. This paper begins by identifying conditions for to have an energy-momentum tensor conserved. Then, trajectory equation pointlike partic...

I Shinwari Maryum I Shinwari Muhammad

The moist temperate Himalayas, as one of the major ecological zone of Pakistan, deserve specific attention to the conservation of environment and the sustainable development of natural resources. During the last hundred years, the area has been subjected to major structural changes leading to a decrease of about fifty per cent of the potential forest area. The decrease in forest cover, combined...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و - پژوهشکده علوم نانو 1392

among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...

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