نتایج جستجو برای: balanced power sources

تعداد نتایج: 794571  

جهانگیری, محمد , علی آبادی, محسن , گلمحمدی, رستم ,

Introduction: The Power plants are as the major industries that have a large number of workers, providing they health is important. Exposure to occupational noise is the pervasive physical agent in industries like power plants and may impact health and for safety status for people. Determination of the sources of noise in workplaces is important step in noise control plans. This study aimed to ...

Journal: :Optics Communications 2017

Journal: :international journal of health policy and management 2015
garrett wallace brown

this article agrees with recent arguments suggesting that normative and epistemic power is rife within global health policy and provides further examples of such. however, in doing so, it is argued that it is equally important to recognize that global health is, and always will be, deeply political and that some form of power is not only necessary for the system to advance, but also to try and ...

2005
JAY MACDONALD DANIEL JAY MACDONALD Mark G. Karpovsky

Despite the computational complexity of cryptographic algorithms, physical implementations of secure hardware leak information an attacker can use to determine sensitive data. Data-dependent power consumption is one example of leaked information that can reveal an algorithm’s secret key through a Differential Power Analysis (DPA) attack. Dual-rail asynchronous circuits have been proposed as a c...

Journal: :Journal of the Optical Society of America. A, Optics and image science 1988
C Chubb G Sperling

To some degree, all current models of visual motion-perception mechanisms depend on the power of the visual signal in various spatiotemporal-frequency bands. Here we show how to construct counterexamples: visual stimuli that are consistently perceived as obviously moving in a fixed direction yet for which Fourier-domain power analysis yields no systematic motion components in any given directio...

Journal: :Science 1998
Duarte Agusti

Community respiration (R) rates are scaled as the two-thirds power of the gross primary production (P) rates of aquatic ecosystems, indicating that the role of aquatic biota as carbon dioxide sources or sinks depends on its productivity. Unproductive aquatic ecosystems support a disproportionately higher respiration rate than that of productive aquatic ecosystems, tend to be heterotrophic (R > ...

G.B. Das M.A. Akbar M.E. Hossain,

Small-scale dairy farming in Bangladesh is constrained mostly due to acute shortage, high price and seasonal fluctuation of energy and protein supplements. Poor economic conditions of dairy farmers do not allow them to purchase adequate conventional energy and protein supplements. Locally available non-conventional energy and protein sources can be used as alternatives, cheaper than conventiona...

صالحی دوبخشری, احمد , فتوحی فیروزآباد, محمود ,

The increase in fossil fuel prices has resulted in growing utilization of renewable energy sources in power systems. Wind energy as an economical source of energy has experienced the fastest growth among other energy sources. Traditionally, renewable energy sources as a result of their random nature have not been considered in the process of generation expansion planning. The increase in fossil...

Journal: :Microelectronics Journal 2009
Keivan Navi Vahid Foroutan Mostafa Rahimi Azghadi Mehrdad Maeen Maryam Ebrahimpour M. Kaveh Omid Kavehei

A new low-power full-adder based on CMOS inverter is presented. This full-adder is comprised of inverters. Universal gates such as NOR, NAND and MAJORITY-NOT gates are implemented with a set of inverters and non-conventional implementation of them. In the proposed design approach the time consuming XOR gates are eliminated. As full-adders are frequently employed in a tree-structured configurati...

This paper presents modeling and control of a hybrid distributed energy sources including photovoltaic (PV), fuel cell (FC) and battery energy storage (BES) in a microgrid which provides both real and reactive power to support an unbalanced utility grid. The overall configuration of the microgrid including dynamic models for the PV, FC, BES and its power electronic interfacing are briefly descr...

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