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Optimisation analysis of Transact-SQL queries based on indexes 基于索引的Transact-SQL查询的优化分析
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5210
Dominika Hodun, M. Skublewska-Paszkowska
. The article presents a discussion of the optimisation methods involving the modification of query syntax on the example of the use of indexes that served for the application of the methods in practice, and the presentation and analysis of the test results and their comparison. All the queries were made in a Microsoft SQL Server Management Studio 2014 environment, using the AdventureWorksDW2012 test database provided by Microsoft. The object of the research were SELECT queries, which consequently returned the desired set of output data.
. 本文以索引的使用为例,讨论了涉及修改查询语法的优化方法,为这些方法在实践中的应用提供了服务,并对测试结果进行了介绍和分析,并进行了比较。所有的查询都是在Microsoft SQL Server Management Studio 2014环境下进行的,使用的是Microsoft提供的AdventureWorksDW2012测试数据库。研究的对象是SELECT查询,因此返回所需的输出数据集。
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引用次数: 0
CLASSIFICATION OF THE FUNCTIONALITY AND THE SCHEMES OF THE ACOUSTIC EMISSION SOURCES LOCALIZATION 功能分类及声发射源定位方案
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5204
V. Marasanov, A. Sharko
. The classification the functionality and the schemes of the acoustic emission sources localization is presented in the paper. Mathematical support of the coordinate searching of defects and means of their detection are stated.
. 介绍了声发射源定位的分类、功能和定位方案。给出了缺陷坐标搜索的数学支持和缺陷的检测方法。
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引用次数: 0
APPLYING A Q-GRAM BASED MULTIPLE STRING MATCHING ALGORITHM FOR APPROXIMATE MATCHING 应用基于q-gram的多字符串匹配算法进行近似匹配
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5214
Robert Susik
We consider the application of multiple pattern matching (Multi AOSO on q-Grams) algorithm for approximate pattern matching. We propose the on-line approach which translates the problem from approximate pattern matching into a multiple pattern one (called partitioning into exact search). Presented solution allows relatively fast search multiple patterns in text with given k-differences(or mismatches). This paper presents comparison of solution based on MAG algorithm, and [4]. Experiments on DNA, English, Proteins and XML texts with up to k errors show that the new proposed algorithm achieves relatively good results in practical use.
我们考虑了多模式匹配算法在近似模式匹配中的应用。我们提出了在线方法,将问题从近似模式匹配转化为多模式匹配(称为划分为精确搜索)。提出的解决方案允许相对快速地搜索具有给定k差(或不匹配)的文本中的多个模式。本文给出了基于MAG算法的解与[4]的比较。对DNA、英语、蛋白质和XML文本的实验表明,该算法在实际应用中取得了较好的效果,误差不超过k。
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引用次数: 1
ALTERNATIVE TERMINATION CRITERION FOR K-SPECIFIED CRISP DATA CLUSTERING ALGORITHMS k指定的清晰数据聚类算法的备选终止准则
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5216
V. Mosorov, T. Panskyi, S. Biedroń
In this paper the analysis of k-specified (namely k-means) crisp data partitioning pre-clustering algorithm’s termination criterion performance is described. The results have been analyzed using the clustering validity indices. Termination criterion allows analyzing data with any number of clusters. Moreover, introduced criterion in contrast to the known validity indices enables to analyze data that make up one cluster.
本文分析了k指定(即k-means)的清晰数据分区预聚类算法的终止准则性能。采用聚类效度指标对结果进行了分析。终止条件允许使用任意数量的集群分析数据。此外,引入的标准与已知的有效性指标相比,可以分析组成一个簇的数据。
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引用次数: 0
Natężenie światła dziennego w budynku szkoły
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5221
Sławomir Sowa
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引用次数: 3
Wpływ doboru czynnika chłodniczego na możliwości magazynowania chłodu w zasobniku energii termicznej autobusu miejskiego
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5225
M. Aftyka
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引用次数: 0
Sztuczne sieci neuronowe jako motoryczna pamięć asocjacyjna ręki robota humanoidalnego
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5220
P. Olszewski, W. Kamiński
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引用次数: 0
Ekonomiczne i praktyczne aspekty wykorzystania pomp ciepła z odzyskiem z powietrza
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5224
Waldemar Nycz, R. Goleman
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引用次数: 0
Numerical computations of the fractional derivative in IVPS, examples in MATLAB and Mathematica 分数阶导数在IVPS中的数值计算,在MATLAB和Mathematica中的例子
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5208
M. Sowa
. The paper concerns a numerical method that deals with the computations of the fractional derivative in Caputo and Riemann-Liouville definitions. The method can be applied in time stepping processes of initial value problems. The name of the method is SubIval, which is an acronym of its previous name – the subinterval-based method. Its application in solving systems of fractional order state equations is presented. The method has been implemented into an ActiveX DLL. Exemplary MATLAB and Mathematica codes are given, which provide guidance on how the DLL can be used.
. 本文讨论了在Caputo和Riemann-Liouville定义下分数阶导数的数值计算方法。该方法可用于初值问题的时间步进处理。该方法的名称是subbival,这是其前一个名称的缩写-基于子间隔的方法。给出了它在求解分数阶状态方程组中的应用。该方法已在ActiveX DLL中实现。给出了示例MATLAB和Mathematica代码,为如何使用DLL提供了指导。
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引用次数: 2
Into the fast tomographic postprocessing in tokamaks 在托卡马克进行快速层析成像后处理
Pub Date : 2017-09-30 DOI: 10.5604/01.3001.0010.5207
R. Krawczyk, P. Kolasiński, P. Linczuk, Wojciech Zabolotny, K. Poźniak, P. Zienkiewicz, Ryszard S. Romaniuk, A. Wojeński, G. Kasprowicz, T. Czarski, M. Chernyshova
The collaboration of authors led to implementing advanced and fast systems for diagnostics of plasma content in tokamaks. During the development of systems it is planned to add new functionalities, in particular, the algorithms of tomographic reconstruction to obtain information on three dimensional distribution of plasma impurities. In the article the idea of tomographic reconstruction is introduced and issues of performance and adequate hardware selection are presented.
作者的合作导致实施先进和快速的系统诊断等离子体含量在托卡马克。在系统的开发过程中,计划增加新的功能,特别是层析重建算法,以获得等离子体杂质的三维分布信息。本文介绍了层析重建的思想,并提出了性能问题和适当的硬件选择。
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引用次数: 0
期刊
Informatics, Control, Measurement in Economy and Environment Protection
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