نتایج جستجو برای: aggregation operation
تعداد نتایج: 275880 فیلتر نتایج به سال:
The article is devoted to the problem of reduction tubers mechanical damages while providing qualitative indicators potato heap separation process. Theoretical and experimental dependences influence design kinematic parameters machine operation on quality performance are obtained. Within field studies, a installation was made investigate harvester as whole efficiency separation, degree damage, ...
Distributed energy storage is a solution for increasing self-consumption of variable renewable such as solar and wind at the end user site. Small-scale systems can be centrally coordinated by "aggregation" to offer different services grid, operational flexibility peak shaving. This paper shows how centralized coordination vs. distributed operation residential electricity (home batteries) could ...
government interventions in agricultural markets in order to stabilize commodity prices and producer incomes have had a long tradition. intervention has been at both the state and country levels and has been for the most part in the form of commodity-based schemes. this study represents an attempt to develop an appropriate methodology for analyzing the aggre-gate effects of a particular type of...
normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background : there is a lack of data on familial aggregation of colorectal cancer (crc) in iran. we aimed to determine the frequency of hereditary nonpolyposis colorectal cancer (hnpcc) and familial colorectal cancer (fcc) and to determine the frequency of extracolonic cancers in these families in isfahan. methods : we rev...
estimation of protein stability is important for many reasons: first providing an understanding of the basic thermodynamics of the process of folding, protein engineering, and protein stability plays important role in biotechnology especially in food and protein drug design. today, proteins are used in many branches, including industrial processes, pharmaceutical industry, and medical fields. a...
this study was performed to assess the clopidogrel activity in inhibition of platelet aggregation in suspected angina patients on a daily dosag of 75 mg of clopidogrel for at least 7 days. this clinical trial was conducted in the outpatients department of cardiology, post graduate medical institute, lady reading hospital, peshawar from 15th october 2007 to 20th december 2007. we included 105 su...
background: the study of rheological properties of blood has special interest since it is a circulating fluid exposed to shear rates during its life time. this work aims to investigate the influence of whole body gamma irradiation on the rheological properties of rat’s blood. the applied shear rate was from 12 to 375 s-1. low shear viscosity (up to 100 s-1) depends mainly on the erythrocytes ag...
Aggregation is an operation that plays a key role in multidimensional OLAP (MOLAP). Existing aggregation methods in MOLAP have been proposed for file structures such as multidimensional arrays. These file structures are suitable for data with uniform distributions, but do not work well with skewed distributions. In this paper, we consider an aggregation method that uses dynamic multidimensional...
Selecting the right vendor from a large number of possible vendors is a non-trivial task, in which multiple criteria need to be examined carefully. The Multiple criteria decision making provides an effective framework for vendor comparison based on the evaluation of multiple conflict criteria. The decision maker’s information on the conflicting criteria is imprecise due to lack of time or lack ...
An approximation algorithm for analyzing a closed queueing systems with a K-sibling fork/join queue is presented. The procedure is based on decomposition and aggregation. The approximation procedure gives good results for the mean response time and the system throughput. However, it gives results which are an upper bound of the mean response time of the fork/ join operation and a lower bound of...
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