发布求助
文献互助 智能选刊 最新文献

Iranian Journal of Mathematical Sciences and Informatics最新文献

筛选
英文 中文
Solution of Inverse Euler-Bernoulli Problem with Integral Overdetermination and Periodic Boundary Conditions 具有积分过定和周期边界条件的反Euler-Bernoulli问题的解
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2022-04-01 DOI: 10.52547/ijmsi.17.1.191
İ. Bağlan, F. Kanca, V. Mishra
{"title":"Solution of Inverse Euler-Bernoulli Problem with Integral Overdetermination and Periodic Boundary Conditions","authors":"İ. Bağlan, F. Kanca, V. Mishra","doi":"10.52547/ijmsi.17.1.191","DOIUrl":"https://doi.org/10.52547/ijmsi.17.1.191","url":null,"abstract":". In this work, we tried to find the inverse coefficient in the Euler problem with over determination conditions. It showed the existence, stability of the solution by iteration method and linearization method was used for this problem in numerical part. Also two examples are presented with figures.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46157825","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
New Large (n, r)-arcs in PG(2, q) PG（2，q）中新的大（n，r）弧
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2022-04-01 DOI: 10.52547/ijmsi.17.1.125
R. Daskalov
{"title":"New Large (n, r)-arcs in PG(2, q)","authors":"R. Daskalov","doi":"10.52547/ijmsi.17.1.125","DOIUrl":"https://doi.org/10.52547/ijmsi.17.1.125","url":null,"abstract":". An ( n,r )-arc is a set of n points of a projective plane such that some r , but no r +1 of them, are collinear. The maximum size of an ( n,r )-arc in PG(2 ,q ) is denoted by m r (2 ,q ). In this paper we present a new (184 , 12)-arc in PG(2 , 17) , a new (244 , 14)-arc and a new (267 , 15)-arc in PG(2 , 19) .","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46964321","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
Distributive Lattices of λ-simple Semirings λ-简单半环的分配格
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2022-04-01 DOI: 10.52547/ijmsi.17.1.47
T. Mondal
{"title":"Distributive Lattices of λ-simple Semirings","authors":"T. Mondal","doi":"10.52547/ijmsi.17.1.47","DOIUrl":"https://doi.org/10.52547/ijmsi.17.1.47","url":null,"abstract":". In this paper, we study the decomposition of semirings with a semilattice additive reduct. For, we introduce the notion of principal left k -radicals Λ( a ) = { x ∈ S | a l −→ ∞ x } induced by the transitive closure l −→ ∞ of the relation l −→ which induce the equivalence relation λ . Again non-transitivity of l −→ yields an expanding family { l −→ n } of binary relations which associate subsets Λ n ( a ) for all a ∈ S , which again induces an equivalence relation λ n . We also define λ ( λ n )-simple semirings, and characterize the semirings which are distributive lattices of λ ( λ n )-simple semirings.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46943070","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 the Volume of µ-way G-trade 微路G-trade的体量研究
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2022-04-01 DOI: 10.52547/ijmsi.17.1.153
N. Soltankhah, N. Khademian
{"title":"On the Volume of µ-way G-trade","authors":"N. Soltankhah, N. Khademian","doi":"10.52547/ijmsi.17.1.153","DOIUrl":"https://doi.org/10.52547/ijmsi.17.1.153","url":null,"abstract":". A µ -way G -trade ( µ ≥ 2) consists of µ disjoint decompositions of some simple (underlying) graph H into copies of a graph G. The number of copies of the graph G in each of the decompositions is the volume of the G -trade and denoted by s. In this paper, we determine all values s for which there exists a µ -way K 1 ,m -trade of volume s for underlying graph H = K 2 m, 2 m and H = K 2 m .","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47558676","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
n-submodules n-submodules
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2022-04-01 DOI: 10.52547/ijmsi.17.1.177
M. Ahmadi, J. Moghaderi
{"title":"n-submodules","authors":"M. Ahmadi, J. Moghaderi","doi":"10.52547/ijmsi.17.1.177","DOIUrl":"https://doi.org/10.52547/ijmsi.17.1.177","url":null,"abstract":". Let R be a commutative ring with identity. A proper submodule N of an R -module M is an n-submodule if rm ∈ N ( r ∈ R,m ∈ M ) with r / ∈ (cid:112) Ann R ( M ), then m ∈ N . A number of results concerning n-submodules are given. For example, we give other characterizations of n-submodules. Also various properties of n-submodules are considered.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41914463","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 New Uniqueness Results of Solutions for Fractional Volterra-Fredholm Integro-Differential Equations 分数阶Volterra—Fredholm积分微分方程解的一些新的唯一性结果
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2022-04-01 DOI: 10.52547/ijmsi.17.1.135
A. Hamoud, K. Ghadle
{"title":"Some New Uniqueness Results of Solutions for Fractional Volterra-Fredholm Integro-Differential Equations","authors":"A. Hamoud, K. Ghadle","doi":"10.52547/ijmsi.17.1.135","DOIUrl":"https://doi.org/10.52547/ijmsi.17.1.135","url":null,"abstract":". This paper establishes a study on some important latest innovations in the uniqueness of solution for Caputo fractional Volterra-Fredholm integro-differential equations. To apply this, the study uses Banach contraction principle and Bihari’s inequality. A wider applicabil-ity of these techniques are based on their reliability and reduction in the size of the mathematical work.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46463276","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: 3
HYBRID FDM-STABILIZED LANCZOS-TYPE IN SOLVING PDE PROBLEMS 混合fdm稳定lanczos型求解pde问题
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2021-12-31 DOI: 10.46754/jmsi.2021.12.002
Rehana Thalib, Maharani A. Bakar, See G. BIN, Lee Y. YEE, Yong S. XIA, N. Mohamed
{"title":"HYBRID FDM-STABILIZED LANCZOS-TYPE IN SOLVING PDE PROBLEMS","authors":"Rehana Thalib, Maharani A. Bakar, See G. BIN, Lee Y. YEE, Yong S. XIA, N. Mohamed","doi":"10.46754/jmsi.2021.12.002","DOIUrl":"https://doi.org/10.46754/jmsi.2021.12.002","url":null,"abstract":"This study investigates the combination of finite difference method (FDM) and the stabilized Lanczos method to solve various partial differential equation (PDE) problems. This combination is wrapped in the algorithms called hybrid FDMRMEIEMLA and hybrid FDM-RLMinRes. FDM is the discretization method which converts the PDEs into algebraic formula, whereas both RMEIEMLA and RLMinRes are known as the stabilized Lanczos methods in solving largescale problems of SLEs. Their hybrids enable us to find the solutions of PDE problems accurately. There are at least three types of PDEs solved in this study, namely Helmholtz, wave, and heat equations. The convergence rate of our methods computed using the residual norms || b - Axk ||. Numerical results showed that our proposed methods performed well in solving the various PDEs with small residual norms.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":"434 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76349186","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
A STATISTICAL INFERENCE ANALYSIS ON CRIME RATES IN PENINSULAR MALAYSIA USING GEOGRAPHICAL WEIGHTED REGRESSION 利用地理加权回归对马来西亚半岛犯罪率的统计推断分析
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2021-12-31 DOI: 10.46754/jmsi.2021.12.005
Nur Edayu Zaini, Syerrina Zakaria, Nuzlinda ABDUL RAHMAN, Wan Saliha Wan Alwi
{"title":"A STATISTICAL INFERENCE ANALYSIS ON CRIME RATES IN PENINSULAR MALAYSIA USING GEOGRAPHICAL WEIGHTED REGRESSION","authors":"Nur Edayu Zaini, Syerrina Zakaria, Nuzlinda ABDUL RAHMAN, Wan Saliha Wan Alwi","doi":"10.46754/jmsi.2021.12.005","DOIUrl":"https://doi.org/10.46754/jmsi.2021.12.005","url":null,"abstract":"Geographical Weighted Regression (GWR) is used to improve decisionmaking in spatial analysis. Instead of the Ordinary Least Square (OLS) regression method that gives a single estimated parameter, the GWR method can provide unique estimated parameters in each location. This study aims to conduct a formal statistical inferential framework on the violent crime rate using the GWR. This analysis discovers the geographical distribution and pattern of criminal cases in Peninsular Malaysia using the average crime rates from 2000-2009, with focus on on violent crime. The comparison of OLS regression, known as Multiple Linear Regression (MLR) with the GWR method, was done to show that GWR was the best model. The GWR output suggests that about 30% of districts showed a significant correlation between violent crime and non-citizen rates. These findings contradict the result from the MLR model, also known global model. The global model could not create any other connection to explain the lack of parameter-location correspondence. Finally, the importance of local relationships in crime studies is necessary to understand the actual crime rate.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":"18 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77087917","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
STABILITY OF THE NUMERICAL SOLUTION FOR THE MIXED PROBLEM OF THE SAINT-VENANT EQUATIONS saint-venant方程混合问题数值解的稳定性
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2021-12-31 DOI: 10.46754/jmsi.2021.12.006
R. Aloev, I. Abdullah, S. Juraev, A. Akbarova
{"title":"STABILITY OF THE NUMERICAL SOLUTION FOR THE MIXED PROBLEM OF THE SAINT-VENANT EQUATIONS","authors":"R. Aloev, I. Abdullah, S. Juraev, A. Akbarova","doi":"10.46754/jmsi.2021.12.006","DOIUrl":"https://doi.org/10.46754/jmsi.2021.12.006","url":null,"abstract":"This article is devoted to the construction and study of the exponential stability of an explicit upwind difference scheme for a mixed problem for the linear system of the Saint Venant equation. For the numerical solution of the mixed problem for the linear system of the Saint Venant equation, an explicit upwind difference scheme is constructed. For a numerical solution, a discrete Lyapunov function is constructed and an a priori estimate for it is obtained. On the basis of the discrete Lyapunov function, the exponential stability of the numerical solution of the initial-boundary-value difference problem of the mixed problem for the linear system of the Saint Venantequation is proved. A theorem on the exponential stability of the numerical solution of the initial-boundary-value difference problem is proved. The behavior of the discrete Lyapunov function is numerically investigated depending on the algebraic condition of exponential stability of the numerical solution of the mixed problem. The results of the theorem on the exponential stability of the numerical solution are confirmed by a specific example of an open channel flow problem.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":"12 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85271710","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
PERSONAL SHARING IN SOCIAL NETWORK ANALYSIS – A CASE STUDY IN UNIVERSITI MALAYSIA TERENGGANU 社会网络分析中的个人分享——以马来西亚登嘉楼大学为例
IF 0.5
Iranian Journal of Mathematical Sciences and Informatics Pub Date : 2021-12-31 DOI: 10.46754/jmsi.2021.12.004
R. Hasni, Nurul Atiqah MOHD RADZI, Mohamad Nazri Husin
{"title":"PERSONAL SHARING IN SOCIAL NETWORK ANALYSIS – A CASE STUDY IN UNIVERSITI MALAYSIA TERENGGANU","authors":"R. Hasni, Nurul Atiqah MOHD RADZI, Mohamad Nazri Husin","doi":"10.46754/jmsi.2021.12.004","DOIUrl":"https://doi.org/10.46754/jmsi.2021.12.004","url":null,"abstract":"In this paper, we discuss a case-study of personal sharing of information among students of two undergraduate programme, i.e., Computational Mathematics and Software Engineering (in short, CM and SE respectively) at UniversitiMalaysia Terengganu, Malaysia. The data collected is represented as a directed graph with edges between vertices representing information sharing between the focused-group of students. An analysis is carried out to identify reciprocity,binfluential individuals and community formation to understand the dynamics of these two groups. Even though the density of CM and SE students’ network are somewhat similar, but higher number of reciprocities and communities exists in CM network which indicates resource sharing can be limited in a particularnetwork. However, two isolated vertices also exist for CM which indicates these students prefer to work alone thus in need of extra attention. It is expected that with the community information derived, we can use it to sustain the dynamics of the network and further boost teaching and learning using various divide-andconquer strategies.","PeriodicalId":43670,"journal":{"name":"Iranian Journal of Mathematical Sciences and Informatics","volume":"42 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79905649","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
首页 上一页 下一页 尾页
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
现在去查看 取消
×
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