Mathematical Population Studies最新文献_第3页

Seasonal fluctuations of age classes, with application to South Russia, 1896-1897 年龄阶层的季节波动，以1896-1897年南俄罗斯为例

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2022-04-19 DOI: 10.1080/08898480.2022.2029074

N. Bonneuil, E. Fursa

引用次数: 0

Imputation for estimating the population mean in the presence of nonresponse, with application to fine particle density in Bangkok 在无反应的情况下估计群体平均值的推断，并应用于曼谷的细颗粒密度

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2022-01-19 DOI: 10.1080/08898480.2021.1997466

Kanisa Chodjuntug, Nuanpan Lawson

引用次数: 3

Maximum likelihood estimation of the parameters of the inverse Gaussian distribution using maximum rank set sampling with unequal samples 利用不等样本最大秩集采样的逆高斯分布参数的最大似然估计

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-12-27 DOI: 10.1080/08898480.2021.1996822

Shuo Wang, Wangxue Chen, Meng Chen, Ya Zhou

引用次数: 7

Entropy-based estimation of the birth-death ratio 出生死亡率的熵估计

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-12-23 DOI: 10.1080/08898480.2021.1988351

Igor Lazov, Petar Lazov

{"title":"Entropy-based estimation of the birth-death ratio","authors":"Igor Lazov, Petar Lazov","doi":"10.1080/08898480.2021.1988351","DOIUrl":"https://doi.org/10.1080/08898480.2021.1988351","url":null,"abstract":"ABSTRACT A population is modeled by a birth-death process in a finite state space. Its stationary distribution is indexed by its birth-death ratio. A sample of values taken by the population size has an elastic sample mean (mean of the observations), an additional sample mean (mean of the logarithms of the observations transformed by a given function), and a synchronizing sample mean (combination of the previous means). When the last two means are zero, then, by definition, information is linear in population size. This is only the case when the population size is geometrically distributed. Equalizing the entropy of a distribution to the entropy calculated on any sample involves the three sample means and allows for estimating the birth-death ratio. Only in the case of information linear in population size, this procedure reduces to maximum likelihood estimation, which involves only the elastic sample mean. The procedure is demonstrated on information that is no longer linear in population size, such as a binomial distribution of population size, where the last two means are not zero, but just equal, and a Pascal distribution and a Poisson distribution, where the last two means are neither zero nor equal.","PeriodicalId":49859,"journal":{"name":"Mathematical Population Studies","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47313002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lead toxicity in the bald eagle population of the Great Lakes region 五大湖区秃鹰种群的铅毒性

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-11-30 DOI: 10.1080/08898480.2021.1983323

Christine Brasic, Latimer Harris-Ward, F. Milner, Carlos Bustamante-Orellana, Jordy Cevallos-Chavez, L. Arriola

引用次数: 0

Keeping random walks safe from extinction and overpopulation in the presence of life-taking disasters 在发生夺走生命的灾难时，保持随机行走的安全，避免灭绝和人口过剩

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-10-25 DOI: 10.1080/08898480.2021.1976476

Branda Goncalves, Thiery E. Huillet

{"title":"Keeping random walks safe from extinction and overpopulation in the presence of life-taking disasters","authors":"Branda Goncalves, Thiery E. Huillet","doi":"10.1080/08898480.2021.1976476","DOIUrl":"https://doi.org/10.1080/08898480.2021.1976476","url":null,"abstract":"ABSTRACT Recurrence and transience conditions are made explicit in discrete-time Markov chain population models for which random stationary growth alternates with disastrous random life-taking events. These events either have moderate stationary magnitudes or lead to an abrupt population decline. The probability of their occurrence may or may not depend on the population size. These conditions are based on the existence or not of a “weak” carrying capacity, where “weak” means that the carrying capacity can be exceeded, temporarily. In this framework, the population is threatened with extinction, an event whose probability is expressed, as well as the law of the time remaining until this deadline. On the other hand, the population is also threatened by overpopulation, an event whose time to reach a given threshold is expressed, as well as the difference between the population size and the carrying capacity. The theory is that of extreme values for Markov chains and is based on the control of the spectral properties of the northwest truncation of the transition matrix of the original Markov chain with life-taking disasters. The article presents an extension to the case where the process of life-taking disasters is no longer geometric and to the case where the probability of occurrence of a disaster depends on the population size. Both the time to extinction and the time to a given threshold have geometrically decaying distribution tails. The use of the extremal Markov chain in the calculation of the time to overpopulation is innovative.","PeriodicalId":49859,"journal":{"name":"Mathematical Population Studies","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2021-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46636913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Population models of diabetes mellitus by ordinary differential equations: a review 用常微分方程建立糖尿病人群模型的研究进展

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-09-30 DOI: 10.1080/08898480.2021.1959817

H. Nasir, A. A. Mat Daud

引用次数: 5

Variance estimation based on L-moments and auxiliary information 基于l矩和辅助信息的方差估计

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-07-26 DOI: 10.1080/08898480.2021.1949923

U. Shahzad, I. Ahmad, I. Almanjahie, N. Koyuncu, M. Hanif

引用次数: 3

Geostatistical patterns of comorbidity of diarrhea, acute respiratory infection, and stunting among under-five children in Nigeria 尼日利亚五岁以下儿童腹泻、急性呼吸道感染和发育迟缓合并症的地理统计模式

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-07-09 DOI: 10.1080/08898480.2021.1942654

E. Gayawan, Olamide Seyi Orunmoluyi, O. Adegboye

{"title":"Geostatistical patterns of comorbidity of diarrhea, acute respiratory infection, and stunting among under-five children in Nigeria","authors":"E. Gayawan, Olamide Seyi Orunmoluyi, O. Adegboye","doi":"10.1080/08898480.2021.1942654","DOIUrl":"https://doi.org/10.1080/08898480.2021.1942654","url":null,"abstract":"ABSTRACT Among children under five in Nigeria, in the year 2018, the prevalence of diarrhea was 13%, that of acute respiratory infections 3%, and that of stunting 37%. A shared-component model highlights geographic variations in the comorbidities of these diseases. The data are from the 2018 Nigeria Demographic and Health Survey. The majority of states in northern Nigeria presented clusters of higher risk for comorbidities of any pair of the three diseases. Compared with mothers with primary education or less, mothers with secondary education were 1.4 times less likely to have two or three of these diseases at the same time, and women with tertiary education 2.0 times less. Compared to childless women of the same age, mothers were 1.6 times less when aged 20–29, 1.9 times less when aged 30–39, and 2.0 times less when aged 40–49. Access to a protected water source reduced the risk by a factor of 1.3. Girls under age five were 1.2 times less likely than boys of that age to have two or three of these diseases at the same time. This factor was the same for breastfed children compared to those who were not breastfed.","PeriodicalId":49859,"journal":{"name":"Mathematical Population Studies","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/08898480.2021.1942654","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47332651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Bayesian forecast of the basic reproduction number during the Covid-19 epidemic in Morocco and Italy 摩洛哥和意大利2019冠状病毒病流行期间基本繁殖数的贝叶斯预测

IF 1.8 3区社会学

Mathematical Population Studies Pub Date : 2021-07-09 DOI: 10.1080/08898480.2021.1941661

M. El Fatini, Mohamed El khalifi, R. Gerlach, R. Pettersson

引用次数: 3