Nauka – Technika – Technologia. Tom 2最新文献

筛选
英文 中文
Design of Takagi–Sugeno fuzzy systems by learning from examples in case a number of available data is not sufficient 在可用数据数量不足的情况下,通过实例学习设计Takagi-Sugeno模糊系统
Nauka – Technika – Technologia. Tom 2 Pub Date : 1900-01-01 DOI: 10.7494/978-83-66727-48-9_7
A. Macioł, P. Macioł
{"title":"Design of Takagi–Sugeno fuzzy systems by learning from examples in case a number of available data is not sufficient","authors":"A. Macioł, P. Macioł","doi":"10.7494/978-83-66727-48-9_7","DOIUrl":"https://doi.org/10.7494/978-83-66727-48-9_7","url":null,"abstract":"The paper describes a solution of a problem of developing of fuzzy rules compliant with the Takagi–Sugeno approach where a number of available examples (observations) is not sufficient. Modeling of fuzzy premises and generating functions describing a dependence of a result variable on antecedents are described. In our original approach a problem of identification of membership functions of variables com-posing premises and a problem of consequent parameters identification are solved. For the first one, we used a simple technique based on individual judgements of experts. The second one is solved with a linear programming method. In particular, our approach to formulate the consequent parameter identification problem allows using of an extremely effective T-S method when a data-driven approach cannot be applied. In the paper we present a description of our methods and results of simulations of accuracy of the proposed approach, based on commonly known benchmarks. The achieved accuracy of classification is sufficient for the most of decision-making systems of an expert nature.","PeriodicalId":165954,"journal":{"name":"Nauka – Technika – Technologia. Tom 2","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115551830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Grid dispersion and filtering in broadband acoustic emission (AE) source modeling 宽带声发射(AE)源建模中的网格色散和滤波
Nauka – Technika – Technologia. Tom 2 Pub Date : 1900-01-01 DOI: 10.7494/978-83-66727-48-9_10
Siddhesh Raorane, P. Paćko
{"title":"Grid dispersion and filtering in broadband acoustic emission (AE) source modeling","authors":"Siddhesh Raorane, P. Paćko","doi":"10.7494/978-83-66727-48-9_10","DOIUrl":"https://doi.org/10.7494/978-83-66727-48-9_10","url":null,"abstract":"The spatial grid of numerical models of acoustic emission (AE) sources acts as a spatial filter for elastic wave signals. The filtering effects are particularly prominent for short-time, broadband signals – typical for AE. In this paper, we investigate the filtering influence of spatial discretization (meshing) on broadband AE source modeling. The AE source – generating AEs propagating as elastic waves – was modeled using cohesive zone approach, and the numerical simulations were performed in commercial FEM software COMSOL Multiphysics. Results were processed using Fast Fourier Transform, filtered, and subsequently analyzed in terms of the filtering effects of spatial discretization on AE source modeling. In this paper, it is shown that spatial grids in numerical models effectively work like low-pass filters with the cut-off frequency corresponding to the numerical Brillouin zone. The latter induces short wavelength limitation, and the frequency components near (below) the zone edge are amplified in magnitude. It was found that the amplified frequencies represent numerical errors. Also, it was inferred that the filtering effect of spatial discretization can mask the AE source characteristics and affect the quality of the results.","PeriodicalId":165954,"journal":{"name":"Nauka – Technika – Technologia. Tom 2","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123517314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analiza możliwości rozwoju i wykorzystania potencjału biogazu rolniczego na cele energetyczne w Polsce
Nauka – Technika – Technologia. Tom 2 Pub Date : 1900-01-01 DOI: 10.7494/978-83-66727-48-9_9
M. Niekurzak
{"title":"Analiza możliwości rozwoju i wykorzystania potencjału biogazu rolniczego na cele energetyczne w Polsce","authors":"M. Niekurzak","doi":"10.7494/978-83-66727-48-9_9","DOIUrl":"https://doi.org/10.7494/978-83-66727-48-9_9","url":null,"abstract":"","PeriodicalId":165954,"journal":{"name":"Nauka – Technika – Technologia. Tom 2","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127684217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信