نتایج جستجو برای: energy effi
تعداد نتایج: 668243 فیلتر نتایج به سال:
Environmental concerns about using fossil fuels, and their resource constraints along with energy security concerns, have spurred great interest in generating electrical energy from renewable sources. The variable and stochastic nature of renewable sources, however, makes solar and wind power diffi cult to manage, especially at high levels of penetration. Electrical energy storage (EES) is nece...
A longstanding question in the study of energy demand concerns the role of information as a determinant of home-effi ciency improvements. Although the provision of information via home energy audits is frequently asserted to be an eff ective means for governments to encourage the implementation of effi ciency-enhancing renovations, empirical support for this assertion is tenuous at best. Apart ...
1540-7977/08/$25.00©2008 IEEE 48 ieee power & energy magazine november/december 2008 THE EXISTING ELECTRICITY INFRASTRUCTURE EVOLVED TO ITS TECHNOLOGY composition today from the convolution of several major forces, only one of which was technologically based. Today opportunities and challenges persist in world-wide electric power networks, including reducing transmission congestion, increasing ...
Digital Object Identifi er 10.1109/MPE.2011.942353 Date of publication: 21 October 2011 THE MODERN ELECTRIC POWER SYSTEM constitutes a fascinating challenge in delivering reliable and inexpensive power using uncertain components in an increasingly complex world. While the components of the power system have always been uncertain and variable to some degree, the addition of wind and solar energy...
This paper proposes a new approach for determining efficient DMUs in DEA models using inverse optimi-zation and without solving any LPs. It is shown that how a two-phase algorithm can be applied to detect effi-cient DMUs. It is important to compare computational performance of solving the simultaneous linear equa-tions with that of the LP, when computational issues and complexity analysis are a...
Background: Previous meta-analysis (Capodanno D, et al, 2012) concluded that in patients with non-valvular atrial fi brillation (NVAF) in world patients, novel oral anticoagulants (NOACs) signifi cantly decreased incidences of all type of stroke and systemic embolism (SE) with similar risk of major bleeding compared to warfarin. But, it is unknown about effi cacy and safety of NOACs compared to...
2017[28] THE HITACHI SCIENTIFIC INSTRUMENT NEWS ー 2017 Vol.8 Although the effi ciency and durability of electrochemical energy conversion devices such as solid oxide fuel cells (SOFCs) and electrolyzers (SOECs) are drastically affected by their surface and interfacial chemistry and morphology, it is only recently that more attention is being paid to their characterisation. The increasing demand...
There is some controversy in the field of household economics regarding the effi ciency of household decisions. We make the point that a flexible specification of spousal preferences and the household production technology precludes the possibility of using revealed preference data on household time allocations to determine the manner in which spouses interact: effi ciently or ineffi ciently. U...
Using household travel diary data collected in Germany between 1997 and 2012, we employ an instrumental variable (IV) approach to estimate fuel price and effi ciency elasticities. The aim is to gauge the relative impacts of fuel economy standards and fuel taxes on distance traveled. We fi nd that the magnitudes of the elasticity estimates are statistically indistinguishable: higher fuel prices ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید