Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1211455
轩 冷
{"title":"Global Dynamics of a Lotka-Volterra Filippov-Type Plant Infectious Disease Model under Threshold Strategy","authors":"轩 冷","doi":"10.12677/aam.2023.1211455","DOIUrl":"https://doi.org/10.12677/aam.2023.1211455","url":null,"abstract":"","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"53 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":"135711408","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1211452
夏懿 杨
{"title":"The Computation of the Nonorientable Genus of T<sub>11</sub>","authors":"夏懿 杨","doi":"10.12677/aam.2023.1211452","DOIUrl":"https://doi.org/10.12677/aam.2023.1211452","url":null,"abstract":"","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"45 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":"135609099","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1210404
海花 谭
This paper investigates the numerical solution of a class of partial differential equations of time-fractional order. Firstly, the paper discretizes the spatial variables using the higher order weighted essential no oscillation (WENO) scheme to achieve high accuracy in the spatial direction, thus obtaining an ordinary differential equation related only to time. Then, the exponential sum approximation (SOE) to the time-fractional order Caputo derivative is applied in the time direction to reduce memory and complexity for fast computation. Next, the higher-order convergence of the
{"title":"Solving a Class of Time-Fractional Order Par-tial Differential Equations in High Order Scheme","authors":"海花 谭","doi":"10.12677/aam.2023.1210404","DOIUrl":"https://doi.org/10.12677/aam.2023.1210404","url":null,"abstract":"This paper investigates the numerical solution of a class of partial differential equations of time-fractional order. Firstly, the paper discretizes the spatial variables using the higher order weighted essential no oscillation (WENO) scheme to achieve high accuracy in the spatial direction, thus obtaining an ordinary differential equation related only to time. Then, the exponential sum approximation (SOE) to the time-fractional order Caputo derivative is applied in the time direction to reduce memory and complexity for fast computation. Next, the higher-order convergence of the","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"20 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":"135801075","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1211450
芳 周
Taking the “Virtual Nursing Home” in Chengguan District, Lanzhou City as an example, this paper conducts a satisfaction questionnaire survey on 223 elderly people. Starting from the three aspects of resources, services and costs, it is used as a first-level indicator to comprehensively eva-周芳
{"title":"Research on the Satisfaction Evaluation of the Elderly in “Virtual Nursing Home” Based on Grey Fuzzy Theory","authors":"芳 周","doi":"10.12677/aam.2023.1211450","DOIUrl":"https://doi.org/10.12677/aam.2023.1211450","url":null,"abstract":"Taking the “Virtual Nursing Home” in Chengguan District, Lanzhou City as an example, this paper conducts a satisfaction questionnaire survey on 223 elderly people. Starting from the three aspects of resources, services and costs, it is used as a first-level indicator to comprehensively eva-周芳","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"19 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":"135449551","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1211448
广涛 刘
{"title":"A Comparative Analysis of KGD, PKN, and a Modified P3D Model","authors":"广涛 刘","doi":"10.12677/aam.2023.1211448","DOIUrl":"https://doi.org/10.12677/aam.2023.1211448","url":null,"abstract":"","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"12 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":"135447626","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.129402
晓雯 路
{"title":"Survival Prediction of Gastric Cancer and Colorectal Cancer Based on Graph Convolutional Neural Networks","authors":"晓雯 路","doi":"10.12677/aam.2023.129402","DOIUrl":"https://doi.org/10.12677/aam.2023.129402","url":null,"abstract":"","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"2 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":"135599326","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1210431
仁杰 张
{"title":"Multi-Group Environment Gini Coefficient and Its Application in the Evaluation of Economic and Ecological Balance of Five Ur-ban Agglomerations","authors":"仁杰 张","doi":"10.12677/aam.2023.1210431","DOIUrl":"https://doi.org/10.12677/aam.2023.1210431","url":null,"abstract":"","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"70 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":"135212402","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1210411
琳 邓
{"title":"The Variance and Fuk-Nagaev Type Inequality for Weighted Branching Processes in a Random Environment","authors":"琳 邓","doi":"10.12677/aam.2023.1210411","DOIUrl":"https://doi.org/10.12677/aam.2023.1210411","url":null,"abstract":"","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"2011 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":"136257556","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}
Pub Date : 2023-01-01DOI: 10.12677/aam.2023.1210417
浩杰 尤
{"title":"Research on Population Structure Prediction and Fertility Policy under the Background of Opening up to Three Children","authors":"浩杰 尤","doi":"10.12677/aam.2023.1210417","DOIUrl":"https://doi.org/10.12677/aam.2023.1210417","url":null,"abstract":"","PeriodicalId":62065,"journal":{"name":"数学进展","volume":"29 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":"136367806","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：