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Universal Journal of Applied Mathematics最新文献

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Remotest Points and Best Proximity Points in Metric Spaces 公制空间中的最远点和最佳邻近点
Universal Journal of Applied Mathematics Pub Date : 2019-10-01 DOI: 10.13189/UJAM.2019.070401
M. A. Baseri, H. Mazaheri
{"title":"Remotest Points and Best Proximity Points in Metric Spaces","authors":"M. A. Baseri, H. Mazaheri","doi":"10.13189/UJAM.2019.070401","DOIUrl":"https://doi.org/10.13189/UJAM.2019.070401","url":null,"abstract":"In this paper, we give sufficient conditions for the existence of remotest points with recurrence relations. Then, we apply these relations to generalize recent best proximity point theorems. The findings of the present research contribute and enrich previous results reviewed in the literature.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132456138","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
Mathematical Modeling on the Obesity Dynamics in the Southeastern Region and the Effect of Intervention 东南地区肥胖动态的数学建模及干预效果
Universal Journal of Applied Mathematics Pub Date : 2019-08-01 DOI: 10.13189/ujam.2019.070302
L. Paudel
{"title":"Mathematical Modeling on the Obesity Dynamics in the Southeastern Region and the Effect of Intervention","authors":"L. Paudel","doi":"10.13189/ujam.2019.070302","DOIUrl":"https://doi.org/10.13189/ujam.2019.070302","url":null,"abstract":"Overweight and obesity has been a major health problem in the United States. The severity is highest in the southeastern region. Social contagion is a significant factor for the progression of the obesity and its identification and control may lead to effective planning in the intervention of the obesity epidemic. In this paper, we devise a SIR model that capture the current dynamics of obesity in the southeastern region of the United States. We discuss the spread of obesity among friends and relatives through social network. With the help of the mathematical model, we discuss the effectiveness of the current intervention programs to control the obesity. We also purpose some affirmative actions to the public health policy makers, the city planning authority, and the community itself that could minimize and even reverse the pattern of obesity.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127790931","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
On Optimization of Manufacturing of Bipolar Heterotransistors Framework Circuit of a High-voltage Element or to Increase Their Integration Rate: On Influence Mismatch-induced Stress 高压元件双极异质晶体管框架电路制造优化或提高其集成率——影响错配引起的应力
Universal Journal of Applied Mathematics Pub Date : 2019-07-01 DOI: 10.13189/UJAM.2019.070301
E. Pankratov
{"title":"On Optimization of Manufacturing of Bipolar Heterotransistors Framework Circuit of a High-voltage Element or to Increase Their Integration Rate: On Influence Mismatch-induced Stress","authors":"E. Pankratov","doi":"10.13189/UJAM.2019.070301","DOIUrl":"https://doi.org/10.13189/UJAM.2019.070301","url":null,"abstract":"In this paper, we introduce an approach to decrease dimensions of bipolar heterotransistors framework a circuit of a voltage divider biasing common emitter amplifier. Framework of the approach, we consider manufacturing of the divider in heterostructure with specific configuration. Several specific areas of the heterostructure should be doped by diffusion or by ion implantation. After this doping, dopant and/or radiation defects should be annealed by using optimized scheme. We also consider an approach to decrease value of mismatch-induced stress in the considered heterostructure. To make prognosis of technological process and obtain recommendations to optimize the process, we introduce an analytical approach to analyze mass and heat transport in heterostructures with account mismatch-induced stress.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133497587","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
Perturbation in Nonlinear Operator Dynamical Systems 非线性算子动力系统中的摄动
Universal Journal of Applied Mathematics Pub Date : 2019-03-01 DOI: 10.13189/ujam.2019.070201
R. Ahangar
{"title":"Perturbation in Nonlinear Operator Dynamical Systems","authors":"R. Ahangar","doi":"10.13189/ujam.2019.070201","DOIUrl":"https://doi.org/10.13189/ujam.2019.070201","url":null,"abstract":"An introduction to nonlinear operator dynamical systems with a brief technical notation will be presented. The operator is designed to include all nonanticipating (causal) delay and functional dierential equations. Condi- tions for the existence and uniqueness of these noanticipating operator dierential equations (NODE) will be investigated. At last the perturbed solutions of these type nonlinear systems and some properties will be presented.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115223340","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
Non-Hamiltonian 3{Regular Graphs with Arbitrary Girth 具有任意周长的非哈密顿3{正则图
Universal Journal of Applied Mathematics Pub Date : 2019-02-27 DOI: 10.13189/UJAM.2014.020111
M. Haythorpe
{"title":"Non-Hamiltonian 3{Regular Graphs with Arbitrary Girth","authors":"M. Haythorpe","doi":"10.13189/UJAM.2014.020111","DOIUrl":"https://doi.org/10.13189/UJAM.2014.020111","url":null,"abstract":"It is well known that 3-regular graphs with arbitrarily large girth exist. Three constructions are given that use the former to produce non-Hamiltonian 3-regular graphs without reducing the girth, thereby proving that such graphs with arbitrarily large girth also exist. The resulting graphs can be 1-, 2- or 3-edge-connected de- pending on the construction chosen. From the constructions arise (naive) upper bounds on the size of the smallest non-Hamiltonian 3-regular graphs with particular girth. Several examples are given of the smallest such graphs for various choices of girth and connectedness.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122063899","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: 5
On Fibonacci and Lucas Vectors and Quaternions 论斐波那契和卢卡斯向量和四元数
Universal Journal of Applied Mathematics Pub Date : 2018-11-01 DOI: 10.13189/ujam.2018.060502
O. Kaya, M. Önder
{"title":"On Fibonacci and Lucas Vectors and Quaternions","authors":"O. Kaya, M. Önder","doi":"10.13189/ujam.2018.060502","DOIUrl":"https://doi.org/10.13189/ujam.2018.060502","url":null,"abstract":"In this study, first we investigate the Fibonacci vectors, Lucas vectors and their vector products considering two Fibonacci vectors, two Lucas vectors and one of each vector. We give some theorems for the mentioned vector products and then we give the conditions for such vectors to be perpendicular or parallel. We also introduce the area formulas for the parallelograms constructed by Fibonacci and Lucas vectors with respect to Fibonacci and Lucas numbers. Moreover, we determine some formulas for the cosine and sine functions of the angles between two Fibonacci vectors, two Lucas vectors and lastly a Fibonacci vector and a Lucas vector. Finally, we investigate the Fibonacci quaternions and Lucas quaternions. We give some corollaries regarding the quaternion products of two Fibonacci quaternions, two Lucas quaternions and one of each quaternion. We conclude with the result that the quaternion product of such quaternions is neither a Fibonacci quaternion nor a Lucas quaternion.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115135067","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
Optimal Control Approach to Image Registration 图像配准的最优控制方法
Universal Journal of Applied Mathematics Pub Date : 2018-11-01 DOI: 10.13189/ujam.2018.060501
Stephen Taiwo Salako
{"title":"Optimal Control Approach to Image Registration","authors":"Stephen Taiwo Salako","doi":"10.13189/ujam.2018.060501","DOIUrl":"https://doi.org/10.13189/ujam.2018.060501","url":null,"abstract":"","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116184033","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
Fast Escaping Set of Transcendental Semigroup 超越半群的快速转义集
Universal Journal of Applied Mathematics Pub Date : 2018-09-17 DOI: 10.13189/ujam.2019.070101
Bishnu H Subedi, A. Singh
{"title":"Fast Escaping Set of Transcendental Semigroup","authors":"Bishnu H Subedi, A. Singh","doi":"10.13189/ujam.2019.070101","DOIUrl":"https://doi.org/10.13189/ujam.2019.070101","url":null,"abstract":"In this paper, we study fast escaping sets of transcendental semigroups. In particular, we discuss some fundamental structure and properties of fast escaping sets. We also show how far the classical dynamical theory of fast escaping sets of transcendental entire functions applies to general settings of transcendental semigroups and what new phenomena can occur.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126680843","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
P-Sasakian Manifold with Quarter-Symmetric Non-Metric Connection 具有四分之一对称非度量连接的P-Sasakian流形
Universal Journal of Applied Mathematics Pub Date : 2018-09-01 DOI: 10.13189/UJAM.2018.060402
Oğuzhan Bahadr
{"title":"P-Sasakian Manifold with Quarter-Symmetric Non-Metric Connection","authors":"Oğuzhan Bahadr","doi":"10.13189/UJAM.2018.060402","DOIUrl":"https://doi.org/10.13189/UJAM.2018.060402","url":null,"abstract":"The object of the present paper is to study on a P-Sasakian manifold with quarter symmetric non-metric connection. In this paper, we consider some properties of the curvature tensor, projective curvature tensor, concircular curvature tensor, conformal curvature tensor with respect to quarter symmetric non-metric connection in a P-Sasakian manifolds. Finally, we give an example.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"19 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114044583","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
Missingness Mechanism that Incorporated Joint Modeling of Longitudinal Data with Monotone Dropout 纵向数据与单调Dropout联合建模的缺失机制
Universal Journal of Applied Mathematics Pub Date : 2018-09-01 DOI: 10.13189/ujam.2018.060401
A. O, M. H.
{"title":"Missingness Mechanism that Incorporated Joint Modeling of Longitudinal Data with Monotone Dropout","authors":"A. O, M. H.","doi":"10.13189/ujam.2018.060401","DOIUrl":"https://doi.org/10.13189/ujam.2018.060401","url":null,"abstract":"We analyzed repeated measurement of continuous responses with monotone dropout. We are interested in reducing the bias associated with treatment effects, but the results' credibility relies on the validity of the techniques applied to analyze the data, and under the conditions where the techniques gives reliable answers. Furthermore, the robustness of the trial findings are determined through the application of sensitivity analysis which verifies to which extent the results are affected by changes in techniques, values of unmeasured variables and model assumptions. Moreover, the results obtain from the missing not at random (MNAR) is the same as their counterpart in missing at random (MAR). In addition, using multiple imputation (MI) in the analysis also improves the accuracy of results.","PeriodicalId":372283,"journal":{"name":"Universal Journal of Applied Mathematics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117157977","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
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