نتایج جستجو برای: absolute efficiency

تعداد نتایج: 472782  

2015
Shaoqiang Chen Lin Zhu Masahiro Yoshita Toshimitsu Mochizuki Changsu Kim Hidefumi Akiyama Mitsuru Imaizumi Yoshihiko Kanemitsu

World-wide studies on multi-junction (tandem) solar cells have led to record-breaking improvements in conversion efficiencies year after year. To obtain detailed and proper feedback for solar-cell design and fabrication, it is necessary to establish standard methods for diagnosing subcells in fabricated tandem devices. Here, we propose a potential standard method to quantify the detailed subcel...

Journal: :Discrete Applied Mathematics 2004
Peter L. Hammer Alexander Kogan Bruno Simeone Sándor Szedmák

Patterns are the key building blocks in the logical analysis of data (LAD). It has been observed in empirical studies and practical applications that some patterns are more “suitable” than others for use in LAD. In this paper, we model various such suitability criteria as partial preorders defined on the set of patterns. We introduce three such preferences, and describe patterns which are Paret...

2016
J. Kim S. Byun Y. Kim B. Ahn Y. Chan W. Siu

The H. 264/AVC offer many coding tools that give higher compression ratio compared to earlier standards. These tools increase the computational complexity of the motion estimation. In this paper, we have presented a computationally efficient method to speed up the search process by minimizing the computational load on general full search. The proposed method is having two phases, wherein the fi...

Journal: :EURASIP J. Image and Video Processing 2017
Wei-Gang Chen Xun Wang Yan Tian

For High Efficiency Video Coding (HEVC) using block-based prediction, the discrete cosine transform (DCT), and quantization, a large number of DCT coefficients in a transform block (TB) are commonly found to be quantized to zero. A two-dimensional transform in HEVC is usually implemented by first applying a butterfly-based one-dimensional (1D) DCT to each row of the residual block, followed by ...

2006
GARANCE GENICOT

This paper investigates the effects of inequality in the presence of voluntary risk-sharing. In any period, an agent’s resources are composed of his share of a secure endowment (wealth, land) and a random component (labor income). To be sure, the distribution of wealth does not affect the Pareto optimal payoff vectors but, by changing the autarchic utilities, affects the set of these payoff vec...

Journal: :Environmental pollution 2010
David W Graham Clare Trippett Walter K Dodds Jonathan M O'Brien Eric B K Banner Ian M Head Marilyn S Smith Richard K Yang Charles W Knapp

Denitrification is a process that reduces nitrogen levels in headwaters and other streams. We compared nirS and nirK abundances with the absolute rate of denitrification, the longitudinal coefficient of denitrification (i.e., Kden, which represents optimal denitrification rates at given environmental conditions), and water quality in seven prairie streams to determine if nir-gene abundances exp...

Journal: :Perception 2001
M P Eckstein B R Beutter L S Stone

In previous studies of saccadic targeting, the issue how visually guided saccades to unambiguous targets are programmed and executed has been examined. These studies have found different degrees of guidance for saccades depending on the task and task difficulty. In this study, we use ideal-observer analysis to estimate the visual information used for the first saccade during a search for a targ...

Journal: :مهندسی عمران فردوسی 0
پیمان اشرفی جواد علامتیان

this paper deals with new method for designing the tuned mass dampers (tmd) with considering both transient and steady state responses, simultaneously. this formulation is presented for undamped vibrations. for this purpose, the absolute value of the structural displacement ratio is minimized numerically. this procedure leads to optimum value of tmd's specifications. for numerical verification,...

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