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Mathematical Methods Applied to Economy and Sustainable Development Goals 应用于经济和可持续发展目标的数学方法
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.103015
T. E. Olaosebikan, Friday Ogoigbe Egbon, K. S. Olayemi
{"title":"Mathematical Methods Applied to Economy and Sustainable Development Goals","authors":"T. E. Olaosebikan, Friday Ogoigbe Egbon, K. S. Olayemi","doi":"10.4236/ojmsi.2022.103015","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.103015","url":null,"abstract":"Mathematics is a key factor in achieving the Sustainable Development Goals (SDGs), because of its applicability to real situations. To achieve the set goals in SDG, this paper suggests some mathematical methods that will be useful for solving real situations in relation to goals 2 and 12 of SDGs approved by UN when modeled mathematically. The Northwest Corner Method (NWCM), Least Cost Method (LCM), and Vogel Approximation Method (VAM), which are the initial solution methods were examined to ascertain the ideal route of transporting commodities from production facilities to requirement destination while the optimal solution methods involve Stepping Stone Method (SSM), and Modified Distribution Method (MDM), that give the feasible solution which will enhance minimum transportation cost were also thoroughly defined. Subsequent research shall focus on application of the methods in relation to SDGs problems in comparison with other existing methods.","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368721","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
Effect of the Dynamic Resistance on the Maximum Output Power in Dynamic Modelling of Photovoltaic Solar Cells 光伏太阳能电池动态建模中动态电阻对最大输出功率的影响
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.101003
S. Touré
{"title":"Effect of the Dynamic Resistance on the Maximum Output Power in Dynamic Modelling of Photovoltaic Solar Cells","authors":"S. Touré","doi":"10.4236/ojmsi.2022.101003","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.101003","url":null,"abstract":"Several studies on PV solar cells are found in the literature which use static models. Those models are mainly one-diode, two-diode or three-diode models. In the dynamic modelling, a variable parallel capacitance is incorporated. Unlike the previous studies which do not clearly establish a relationship between the capacitance and the voltage, in the present paper, the link between the capacitance and the voltage is investigated and established. In dynamic modelling investigated in this paper, the dynamic resistance is introduced in the modelling of the solar cell. It is introduced in the current-voltage characteristic. The value of the dynamic resistance is evaluated at the maximum power point and its effect on the maximum power is investigated. The study shows for the first time, that the dynamic resistance must be introduced in the current-voltage characteristic, because it has an influence on the PV cell output. Effect of the Dynamic Resistance on the Maximum Output Power in Dynamic Modelling of Photovoltaic Solar Cells.","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368202","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
Prediction of the Technology Company’s Stock Price through the Deep Learning Method 基于深度学习方法的科技公司股价预测
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.104024
Meng Wang
{"title":"Prediction of the Technology Company’s Stock Price through the Deep Learning Method","authors":"Meng Wang","doi":"10.4236/ojmsi.2022.104024","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.104024","url":null,"abstract":"","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70369101","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
Differential Equation Model of Carbon, Nitrogen and Zinc Components in Growing Tomatoes 番茄生长过程中碳、氮、锌组分的微分方程模型
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.103017
Wei-lei Lin, Hailing Xian, Wenwen Wang, C. Huang, Z. Jiang, Xiaoliang Zhou
{"title":"Differential Equation Model of Carbon, Nitrogen and Zinc Components in Growing Tomatoes","authors":"Wei-lei Lin, Hailing Xian, Wenwen Wang, C. Huang, Z. Jiang, Xiaoliang Zhou","doi":"10.4236/ojmsi.2022.103017","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.103017","url":null,"abstract":"","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70369197","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
Operationalisation of Model for Dynamics of COVID-19 in Kenya: Trajectory of Omicron Wave in Kenya 肯尼亚COVID-19动态模型的运行:欧米克朗波在肯尼亚的轨迹
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.103018
S. O. Sam, K. Rogo
{"title":"Operationalisation of Model for Dynamics of COVID-19 in Kenya: Trajectory of Omicron Wave in Kenya","authors":"S. O. Sam, K. Rogo","doi":"10.4236/ojmsi.2022.103018","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.103018","url":null,"abstract":"","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70369270","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
Modelling and Simulating Dynamics Efficiency of Rural-Community Banks (RCBs) in Ghana 加纳农村社区银行动态效率的建模与模拟
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.104019
Pascal Gidigah, J. Acquah, A. Tetteh
{"title":"Modelling and Simulating Dynamics Efficiency of Rural-Community Banks (RCBs) in Ghana","authors":"Pascal Gidigah, J. Acquah, A. Tetteh","doi":"10.4236/ojmsi.2022.104019","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.104019","url":null,"abstract":"The present work seeks to develop a model for measuring efficiency of RCBs in Ghana by means of financial key performance indicators pairing macroeconomic indicators. A stochastic differential equation model for predicting the efficiency of RCBs in the future is developed and simulated using gaussian jumps to evaluate the models’ performance in unpredicted situations with four distinct phases of efficiency. Unique solution Exit multiple 4-dimensional stochastic differential equations and Macroeconomic model is proven to be the best-fitting model for the data with the lowest information criterion.","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70369374","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
Essence of MIKE 21C (FDM Numerical Scheme): Application on the River Morphology of Bangladesh MIKE 21C (FDM数值格式)的实质:在孟加拉国河流形态上的应用
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.102006
S. Sarker
{"title":"Essence of MIKE 21C (FDM Numerical Scheme): Application on the River Morphology of Bangladesh","authors":"S. Sarker","doi":"10.4236/ojmsi.2022.102006","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.102006","url":null,"abstract":"Understanding, quantifying, and forecasting water flow and its behavior in environment is made possible by the use of computational hydraulics in con-junction with numerical models, which is one of the most powerful tools currently available. It is made up of simple to complex mathematical equations having linear and/or nonlinear elements, as well as ordinary and partial differential equations, and it is used to solve problems in many areas. In the vast majority of cases, it is not useful to reach analytical solutions to these mathematical equations using conventional methods. In these settings, mathematical models are solved by employing a variety of numerical algorithms and associated schemes. As a result, in this manuscript, we will cover the most fundamental numerical approach, the Finite Difference Method (FDM), in order to reformulate the governing equations for water and sediment flow from a system of partial differential equations to a system of linear equations. As part of our analysis into the inner workings of a computer program known as MIKE 21C, we will attempt to gain a better understanding of the hydrodynamic processes that take place in major rivers in Bangladesh. In addition to that, we will go over some of the most commonly used morphological studies that have been conducted on Bangladesh’s major rivers, including morphological solutions that have been developed in response to water supply con-cerns.","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368781","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: 12
Quasi-Monte Carlo Approximations for Exponentiated Quadratic Kernel in Latent Force Models 潜在力模型中指数二次核的拟蒙特卡罗逼近
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.104021
Qian Di
{"title":"Quasi-Monte Carlo Approximations for Exponentiated Quadratic Kernel in Latent Force Models","authors":"Qian Di","doi":"10.4236/ojmsi.2022.104021","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.104021","url":null,"abstract":"","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368981","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
Dynamics and Hopf Bifurcation Analysis of a Chemostat Model with Modified Growth Rate and Variable Yield Coefficient 具有修正生长速率和变产量系数的恒化模型的动力学和Hopf分岔分析
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.104023
Md. Shariful Islam, T. Hossain, Mir Shariful Islam
{"title":"Dynamics and Hopf Bifurcation Analysis of a Chemostat Model with Modified Growth Rate and Variable Yield Coefficient","authors":"Md. Shariful Islam, T. Hossain, Mir Shariful Islam","doi":"10.4236/ojmsi.2022.104023","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.104023","url":null,"abstract":"","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70369085","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
30,000 bpd Capacity Modified Modular Refinery Operations in Nigeria 3万桶/天的尼日利亚改装模块化炼油厂运营
建模与仿真(英文) Pub Date : 2022-01-01 DOI: 10.4236/ojmsi.2022.104020
Adeloye Olalekan Michael
{"title":"30,000 bpd Capacity Modified Modular Refinery Operations in Nigeria","authors":"Adeloye Olalekan Michael","doi":"10.4236/ojmsi.2022.104020","DOIUrl":"https://doi.org/10.4236/ojmsi.2022.104020","url":null,"abstract":"","PeriodicalId":56990,"journal":{"name":"建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70368968","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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