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Mathematical Models & Methods in Applied Sciences最新文献

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Determinants of participation in associative dynamics by farmers in the highland zone of the Baswagha chiefdom in eastern DRC 刚果民主共和国东部巴什瓦哈部落高地地区农民参与联合动力的决定因素
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2023-01-01 DOI: 10.12988/ams.2023.916838
Denise Kavira Masingo, Diomede Manirakiza, Jean Baptiste Gakuru Semacumu
{"title":"Determinants of participation in associative dynamics by farmers in the highland zone of the Baswagha chiefdom in eastern DRC","authors":"Denise Kavira Masingo, Diomede Manirakiza, Jean Baptiste Gakuru Semacumu","doi":"10.12988/ams.2023.916838","DOIUrl":"https://doi.org/10.12988/ams.2023.916838","url":null,"abstract":"The grouping of villagers into agricultural associations helps promote peasant agriculture. Exposed to many pressures, village organizations allow members to face the challenges surrounding their farms. Through their role of social inclusion, they also contribute to the socio-economic development of the area. In the face of this evidence, the study seeks to identify the drivers of the associative dynamics of farmers in the highland zone of the Baswagha Chiefdom in eastern DR Congo. Adopting a positivist posture on both 409 and 193 farmers, the results of the regressions indicate that the farmer's group of origin, marital status, savings, access to credit, income, soil type, source of environmental information, level of education, certain main activities carried out, certain sources of fertilizer In the conclusion, the contributions of the farmers to the project, their knowledge of the environment, and their knowledge of the local community, were all considered to","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":"50 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88240898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Pricing European option under mixed hedging strategy in the time-changed mixed sub-fractional Brownian model 时变混合次分数布朗模型下混合套期保值策略下欧洲期权的定价
1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2023-01-01 DOI: 10.12988/ams.2023.918558
Lu Sun, Lin Wang, Jixia Wang
{"title":"Pricing European option under mixed hedging strategy in the time-changed mixed sub-fractional Brownian model","authors":"Lu Sun, Lin Wang, Jixia Wang","doi":"10.12988/ams.2023.918558","DOIUrl":"https://doi.org/10.12988/ams.2023.918558","url":null,"abstract":"This paper deals with the problem of discrete time option pricing in the timed-changed mixed sub-fractional Brownian model. By a mixed hedging strategy, a European call option pricing formula is obtained","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135704650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corruption, an obstacle to attracting foreign direct investment in the least developed countries 腐败是最不发达国家吸引外国直接投资的障碍
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2023-01-01 DOI: 10.12988/ams.2023.917345
Eraste Nzosaba
{"title":"Corruption, an obstacle to attracting foreign direct investment in the least developed countries","authors":"Eraste Nzosaba","doi":"10.12988/ams.2023.917345","DOIUrl":"https://doi.org/10.12988/ams.2023.917345","url":null,"abstract":"Foreign direct investment is a crucial factor for economic growth and development. It is the essential element that allows the least developed countries to progress. These countries have put in place attractive investment codes by granting tax incentives to foreign investors. In these countries, the level of inward FDI flows remains negligible and the results have not led to the desired development. Why the low level of inward FDI despite the incentives taken by LDCs in light of investment codes? The study shows that it is not enough to offer fiscal incentives to foreign investors but that other factors must be taken into account to accelerate the flow of inward FDI. Among these factors, it identifies the fight against corruption as an influential tool for attracting FDI.","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":"43 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78299300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Life of Congolese school children in refugee camp in Burundi: applicability of human rights standards and conventions relating to the status of refugees 布隆迪难民营内刚果学童的生活:与难民地位有关的人权标准和公约的适用性
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2023-01-01 DOI: 10.12988/ams.2023.916815
Viateur Ndericimpaye
{"title":"Life of Congolese school children in refugee camp in Burundi: applicability of human rights standards and conventions relating to the status of refugees","authors":"Viateur Ndericimpaye","doi":"10.12988/ams.2023.916815","DOIUrl":"https://doi.org/10.12988/ams.2023.916815","url":null,"abstract":"In accordance with international human rights law and of refugee law, member states are obliged to provide schooling to foreigners as well as nationals. This article explores the impact of schooling on Congolese refugee children in Burundi. Our objective is to identify the factors that are linked to the non-enjoyment of certain rights. The methods resulting from the qualitative and quantitative approach seem to us the most relevant. For sample size, we surveyed 352 refugee students out of MUSASA School's enrollment of 2029 students. The factors that impede the enrollment of refugee children in school include sexual harassment, out of 166 respondents, or 52.8% out of 47.2% say that there are cases of sexual harassment in their school. Early and forced marriage, 224 out of 128 respondents 63.6% out of 36.4%) , lack of food,231 respondents out of 121, or 65.6% out of 34.4% gender discrimination, and ignorance of the rights of children in general, and of refugee children in particular, 186 out of 166 respondents, or 52.8% . This study is based on qualitative and quantitative data collected through documentation and fieldwork conducted in the Congolese refugee camps of MUSASA. The research findings highlight that refugee children's right to access schooling is often violated. That said, appropriate measures must also be considered to guarantee rights related to schooling as ratified and promulgated in legal texts. Some of these are the respect and implementation of education rights and laws in force in host countries.","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":"21 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74478347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elements of Applied Bifurcation Theory 应用分岔理论的要素
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2023-01-01 DOI: 10.1007/b98848
Y. Kuznetsov
{"title":"Elements of Applied Bifurcation Theory","authors":"Y. Kuznetsov","doi":"10.1007/b98848","DOIUrl":"https://doi.org/10.1007/b98848","url":null,"abstract":"","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":"7 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83264983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1787
Rigorous Derivation of the Euler-Alignment Model with Singular Communication Weights from a Kinetic Fokker-Planck-Alignment Model 从动力学Fokker-Planck排列模型严格推导具有奇异通信权的Euler排列模型
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2022-12-30 DOI: 10.1142/s0218202523500021
Young-Pil Choi, Jeongho Kim
{"title":"Rigorous Derivation of the Euler-Alignment Model with Singular Communication Weights from a Kinetic Fokker-Planck-Alignment Model","authors":"Young-Pil Choi, Jeongho Kim","doi":"10.1142/s0218202523500021","DOIUrl":"https://doi.org/10.1142/s0218202523500021","url":null,"abstract":"","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47966055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Small-signal solutions to a nonlocal cross-diffusion model for interaction of scroungers with rapidly diffusing foragers 觅食者与快速扩散觅食者相互作用的非局部交叉扩散模型的小信号解
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2022-12-30 DOI: 10.1142/s0218202523500045
Youshan Tao, M. Winkler
{"title":"Small-signal solutions to a nonlocal cross-diffusion model for interaction of scroungers with rapidly diffusing foragers","authors":"Youshan Tao, M. Winkler","doi":"10.1142/s0218202523500045","DOIUrl":"https://doi.org/10.1142/s0218202523500045","url":null,"abstract":"","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47693169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Isogeometric discretization methods in computational fluid mechanics 计算流体力学中的等几何离散化方法
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2022-12-08 DOI: 10.1142/s0218202522020018
K. Takizawa, Y. Bazilevs, T. Tezduyar
{"title":"Isogeometric discretization methods in computational fluid mechanics","authors":"K. Takizawa, Y. Bazilevs, T. Tezduyar","doi":"10.1142/s0218202522020018","DOIUrl":"https://doi.org/10.1142/s0218202522020018","url":null,"abstract":"In this lead article of the special issue, we provide a brief summary of the research developments in Isogeometric Analysis (IGA) for Computational Fluid Dynamics (CFD). We focus on the use of IGA in combination with stabilized and variational multiscale methods in fluids. We highlight the key developments and present results in IGA-based CFD that makes this technology attractive for the computational analysis of complex, unsteady and, often turbulent, flows encountered in modern science and engineering applications. We cover both incompressible and compressible flows, numerical method development and performance evaluation using benchmark problems, and applications ranging from stratified environmental flows over complex terrains to concrete-blast fluid–structure interaction. A short synopsis of each article in the special issue is also provided to help reader quickly see what is in the special issue.","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43028999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Erratum: Doubly nonlinear stochastic evolution equations 勘误:双重非线性随机演化方程
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2022-11-30 DOI: 10.1142/s0218202522920014
Luca Scarpa, U. Stefanelli
{"title":"Erratum: Doubly nonlinear stochastic evolution equations","authors":"Luca Scarpa, U. Stefanelli","doi":"10.1142/s0218202522920014","DOIUrl":"https://doi.org/10.1142/s0218202522920014","url":null,"abstract":"","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":"1 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41382356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Weakly connected 2-domination in the join of graphs 图连接中的弱连通2-支配
IF 3.5 1区 数学
Mathematical Models & Methods in Applied Sciences Pub Date : 2022-11-29 DOI: 10.12988/ams.2021.914589
Mae P. Militante, R. G. Eballe, Rene E. Leonida
{"title":"Weakly connected 2-domination in the join of graphs","authors":"Mae P. Militante, R. G. Eballe, Rene E. Leonida","doi":"10.12988/ams.2021.914589","DOIUrl":"https://doi.org/10.12988/ams.2021.914589","url":null,"abstract":"A weakly connected 2-dominating set of a connected graph G is a set D ⊆ V (G) such that every vertex in V (G)D is adjacent to at least two vertices in D and the subgraph, 〈D〉w, weakly induced by D is connected. In this paper, the weakly connected 2-dominating sets in the join G + H and K1 + H of graphs are characterized and their corresponding weakly connected 2-domination numbers are obtained. The necessary and sufficient conditions for the join of graphs to have weakly connected 2-domination numbers equal to 2,3 and 4 are provided. Mathematics Subject Classification: 05C69","PeriodicalId":49860,"journal":{"name":"Mathematical Models & Methods in Applied Sciences","volume":"64 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73865460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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