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Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics最新文献

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New fixed point theorem for generalized contractions 广义收缩的新不动点定理
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-30 DOI: 10.31926/but.mif.2019.61.12.2.21
A. Proca
{"title":"New fixed point theorem for generalized contractions","authors":"A. Proca","doi":"10.31926/but.mif.2019.61.12.2.21","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.21","url":null,"abstract":"In this paper we give a Ciric type fixed point theorem in a complete metric space; this theorem extends other well-known fixed point theorems ([7], [8], [9]). Two examples are given to demonstrate the importance of our work. 2000 Mathematics Subject Classification: 47H10, 54H25.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48865631","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
On Bessel and Riesz-Fisher systems with respect to Banach space of vector-valued sequences 关于向量值序列的Banach空间的Bessel和Riesz-Fisher系统
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-30 DOI: 10.31926/but.mif.2019.61.12.2.10
M. Ismailov
{"title":"On Bessel and Riesz-Fisher systems with respect to Banach space of vector-valued sequences","authors":"M. Ismailov","doi":"10.31926/but.mif.2019.61.12.2.10","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.10","url":null,"abstract":"The paper deals with Bessel systems and Riesz-Fisher systems in Banach spaces with respect to some Banach space of vector-valued sequences. The notions of ˜ X -Bessel systems and ˜ X -Riesz-Fisher systems were introduced and the characterization of such systems were established. ˜ X -frames and ˜ X -Riesz g -bases are also studied in this paper. The relations between them are obtained.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43257419","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
Effectiveness analysis of ZeroR and J48 classifiers using Weka toolkit 使用Weka工具包对ZeroR和J48分类器进行有效性分析
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-30 DOI: 10.31926/but.mif.2019.61.12.2.25
L. Sângeorzan
{"title":"Effectiveness analysis of ZeroR and J48 classifiers using Weka toolkit","authors":"L. Sângeorzan","doi":"10.31926/but.mif.2019.61.12.2.25","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.25","url":null,"abstract":"A current problem is comparing the techniques for evaluating large datasets and interpretation of these data for making decisions in a better way. This paper compares two widely used classification algorithms (ZeroR, J48) from the point of view of several metrics with open source Weka tool. The experimental comparison was made on two datasets of different sizes and from different domains: business and life.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48844985","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: 2
Decision support system choosing software testing strategy 决策支持系统选择软件测试策略
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-20 DOI: 10.31926/but.mif.2019.61.12.2.23
V. Chernov, L. Dorokhova, O. Dorokhov, G. Egorovskaya
{"title":"Decision support system choosing software testing strategy","authors":"V. Chernov, L. Dorokhova, O. Dorokhov, G. Egorovskaya","doi":"10.31926/but.mif.2019.61.12.2.23","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.23","url":null,"abstract":"The problem of choosing the optimal software testing strategy is considered. The classification of testing approaches is given. The factors influencing the choice of type of testing are investigated. It is shown how these factors can be used to make decisions. Algorithms for choosing the type of testing are developed. The proposed and developed decision support system is implemented in practice.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41707661","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
On univalence of a new integral operator 一类新的积分算子的一元性
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-20 DOI: 10.31926/but.mif.2019.61.12.2.2
C. Aldea, V. Pescar
{"title":"On univalence of a new integral operator","authors":"C. Aldea, V. Pescar","doi":"10.31926/but.mif.2019.61.12.2.2","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.2","url":null,"abstract":"In this paper, we define a new integral operator and we obtain univalence criteria for this integral operator.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48397677","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
Some curvature proprieties of Kenmotsu manifolds with the Schouten-van Kampen connection 具有Schouten-van-Kampen连接的Kenmotsu流形的一些曲率性质
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-20 DOI: 10.31926/but.mif.2019.61.12.2.13
D. L. K. Kumar, H. Nagaraja, S. Naveenkumar
{"title":"Some curvature proprieties of Kenmotsu manifolds with the Schouten-van Kampen connection","authors":"D. L. K. Kumar, H. Nagaraja, S. Naveenkumar","doi":"10.31926/but.mif.2019.61.12.2.13","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.13","url":null,"abstract":"The aim of the present paper is to study the concircular curvature tensor, projective curvature tensor, Weyl conformal curvature tensor of Kenmotsu manifolds admitting Schouten-van Kampen connection and an example is given to verify our results.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41539000","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: 4
Differential transformation method for circular membrane vibrations 圆膜振动的微分变换方法
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-20 DOI: 10.31926/but.mif.2019.61.12.2.12
Jaipong Kasemsuwan, S. Sabau, U. Somboon
{"title":"Differential transformation method for circular membrane vibrations","authors":"Jaipong Kasemsuwan, S. Sabau, U. Somboon","doi":"10.31926/but.mif.2019.61.12.2.12","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.12","url":null,"abstract":"The purpose of this research is to present the steps of one-dimensional differential transformation method (DTM) to find the series solutions for the vibrations of a circular membrane under the specified initial and boundary conditions. The problems will be studied in the both cases of vibrations depending only on radius and of the vibrations depending on both radius and angle. We illustrate four examples of problems which the exact solutions can be solve analytically and compare them to the DTM results, to show that the DTM is reliable and of high accuracy. This work shows that the DTM is easier to use than the analytical method from the point of view of programming.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44045000","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
Some inequalities for operator weighted geometric mean 算子加权几何平均的若干不等式
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-20 DOI: 10.31926/but.mif.2019.61.12.2.8
S. Dragomir
{"title":"Some inequalities for operator weighted geometric mean","authors":"S. Dragomir","doi":"10.31926/but.mif.2019.61.12.2.8","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.8","url":null,"abstract":"In this paper, by the use of some recent Young's type scalar inequalities we obtain some inequalities for the weighted geometric mean of two positive operators on a complex Hilbert space.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48576081","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: 2
Some properties of pseudo-slant submanifolds of a Sasakian manifold sasaki流形的伪斜子流形的一些性质
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-20 DOI: 10.31926/but.mif.2019.61.12.2.14
Sumeet Kumar, S. Pandey, R. Prasad
{"title":"Some properties of pseudo-slant submanifolds of a Sasakian manifold","authors":"Sumeet Kumar, S. Pandey, R. Prasad","doi":"10.31926/but.mif.2019.61.12.2.14","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.14","url":null,"abstract":"In this paper, we study pseudo-slant submanifolds of a Sasakian manifold. We find some results and investigate the integrability conditions of distributions which are involved in the definition of pseudo-slant submanifolds. Finally, we obtain the necessary and sucifient condition for a pseudo-slant submanifold to be pseudo-slant product.","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44570680","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
On λ-pseudo bi-starlike functions related to some conic domains 关于与某些圆锥域有关的λ-拟双星函数
Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics Pub Date : 2020-01-20 DOI: 10.31926/but.mif.2019.61.12.2.15
G. Murugusundaramoorthy, J. Sokół
{"title":"On λ-pseudo bi-starlike functions related to some conic domains","authors":"G. Murugusundaramoorthy, J. Sokół","doi":"10.31926/but.mif.2019.61.12.2.15","DOIUrl":"https://doi.org/10.31926/but.mif.2019.61.12.2.15","url":null,"abstract":"In this paper, we introduce a new class ℒ Σ λ (φ) of λ-pseudo bi-starlike functions and determine the bounds for |a2| and |a3| where a2, a3 are the initial Taylor coefficients of f ∈ ℒ Σ λ (φ). Furthermore, we estimate the Fekete-Szeg¨o functional for f ∈ ℒ Σ λ (φ).","PeriodicalId":38784,"journal":{"name":"Bulletin of the Transilvania University of Brasov, Series III: Mathematics, Informatics, Physics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46580414","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
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