نتایج جستجو برای: efficiency performance

تعداد نتایج: 1359007  

2015
Stefano Balsamo Michele Belmonte

Coherent modulation formats have gained considerable importance in high-capacity, high-efficiency optical systems. A key component for achieving good transmission performances are Lithium niobate modulators, which can be designed and optimized to operate with BPSK, QPSK, 16-QAM and OFDM modulation schemes providing excellent results. Keywords-LiNbO3; coherent systems; modulators.

2008
Piero P. Bonissone

We consider Multi Criteria Decision Making (MCDM) as the conjunction of three components: search, preference tradeoffs, and interactive visualization. The first MCDM component is the search process over the space of possible solutions to identify the nondominated solutions that compose the Pareto set. The second component is the preference tradeoff process to select a single solution (or a smal...

2015
Ahmed Bannour Mohamed Lassaad Ammari Yichuang Sun Ridha Bouallegue

The Algebraic Space Time Codes (ASTC) are constructed based on cyclic algebras; they showed a good spectral efficiency, a full diversity, and a full rate under non selective channel condition. However, the radio mobile channel is a selective channel whose features vary during the time. This selectivity is owed to the multi-path phenomenon and generates interferences between symbols (IES). The o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - پژوهشکده ادبیات 1393

testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...

Journal: :مدیریت دولتی 0
غلامحسین نیکوکار دانشگاه امام حسین (ع) علی سجادی پناه دانشگاه امام حسین(ع) حمزه رایج دانشگاه تهران مجید سجادی پناه دانشگاه امام حسین(ع)

effectiveness of military is function of training system effectiveness. notice to training system and knowledge about effectiveness and efficiency is one of the important functions of top military leaders. goal of this study is achieving a performance appraisal model for measuring effectiveness and efficiency of military university training system. for achieving this goal, we design two main qu...

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...

ژورنال: محاسبات نرم 2020

Up to now, several useful algorithms have been proposed to generate covering array, which is one of the branches of combinatorial testing. The main challenge in generating such arrays is generation of the arrays with a minimum number of test cases (for efficiency) at a proper time (for performance), for large systems. Covering array generation strategies are often divided into two general categ...

2005
Huanxing Yang

This paper studies contract selection between efficiency wages and subjective performance pay to motivate workers in a market setting. The optimal wage contract (which may be a combination of efficiency wages and subjective performance pay) is determined by turnover costs in labor markets. Specifically, labor markets with higher turnover costs use more subjective performance pay and less effici...

2007
Apostolos N. Papadopoulos Apostolos Lyritsis Alexandros Nanopoulos Yannis Manolopoulos

Pareto dominance plays an important role in diverse application domains such as economics and e-commerce, and it is widely being used in multicriteria decision making. In these cases, objectives are usually contradictory and therefore it is not straightforward to provide a set of items that are the “best” according to the user’s preferences. Skyline queries have been extensively used to recomme...

2010
Hoang Thanh Nguyen Bir Bhanu

Wireless camera networks provide a unique opportunity for collaborative surveillance. Performance evaluation and optimization of camera networks, however, has seldom been addressed. This chapter fills this gap by detailing an approach by which individual cameras and a whole network of cameras can be simultaneously optimized in terms of Pareto efficiency using multi-objective optimization of per...

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