发布求助
文献互助 智能选刊 最新文献

Journal of Mathematical Sociology最新文献

筛选
英文 中文
Projecting signed two-mode networks 投影签名双模网络
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-13 DOI: 10.1080/0022250x.2019.1711376
David Schoch
{"title":"Projecting signed two-mode networks","authors":"David Schoch","doi":"10.1080/0022250x.2019.1711376","DOIUrl":"https://doi.org/10.1080/0022250x.2019.1711376","url":null,"abstract":"ABSTRACT Signed two-mode networks have so far predominantly been analyzed using blockmodeling techniques. In this work, we put forward the idea of projecting such networks onto its modes. Two projection methods are introduced which allow the application of known dichotomization tool for weighted networks to obtain a simple signed network. It turns out, however, that resulting networks may contain ambivalent ties, defined as conjunctions of positive and negative ties. We show that this requires the reformulation of matrices related to the network and introduce the complex adjacency and Laplacian matrix. These matrices are used to prove some properties related to balance theory including ambivalence.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"45 1","pages":"37 - 50"},"PeriodicalIF":1.0,"publicationDate":"2020-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250x.2019.1711376","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47039911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3
Solidarity in collaboration networks when everyone competes for the strongest partner: a stochastic actor-based simulation model 当每个人都在竞争最强大的合作伙伴时，协作网络中的团结：一个基于参与者的随机模拟模型
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-12 DOI: 10.1080/0022250x.2019.1704284
F. Bianchi, A. Flache, F. Squazzoni
{"title":"Solidarity in collaboration networks when everyone competes for the strongest partner: a stochastic actor-based simulation model","authors":"F. Bianchi, A. Flache, F. Squazzoni","doi":"10.1080/0022250x.2019.1704284","DOIUrl":"https://doi.org/10.1080/0022250x.2019.1704284","url":null,"abstract":"ABSTRACT This article examines the emergence of solidarity from interactions between professionals competing for collaboration. Research on multiplex collaboration networks has shown that economic exchange can elicit solidarity when mediated by trust but did not consider the effect of competition. To fill this gap, we built an agent-based model that simulates the evolution of a multiplex network of collaboration, trust, and support expectations. Simulations show that while resource heterogeneity is key for collaboration, competition for attractive collaboration partners penalizes low-resource professionals, who are less connected and highly segregated. Heterogeneous resource distribution can trigger segregation because of preferential selection of resourceful peers and reciprocity. Interestingly, we also found that low-resource professionals can reduce their marginalization by building in-group mutual support expectations.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"44 1","pages":"249 - 266"},"PeriodicalIF":1.0,"publicationDate":"2020-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250x.2019.1704284","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43010316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 13
A hierarchical walk-based measure of centrality based on reachability between strongly connected components in a digraph 有向图中基于强连接组件之间的可达性的一种分层的、基于行走的中心性度量
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-12 DOI: 10.1080/0022250x.2020.1711753
Neng-pin Lu
{"title":"A hierarchical walk-based measure of centrality based on reachability between strongly connected components in a digraph","authors":"Neng-pin Lu","doi":"10.1080/0022250x.2020.1711753","DOIUrl":"https://doi.org/10.1080/0022250x.2020.1711753","url":null,"abstract":"ABSTRACT For measuring the centrality in a digraph, Bonacich and Lloyd summarized a vector, from the power series of an attenuated adjacency matrix, as the alpha centrality. However, scores of alpha centrality are usually dominated by nodes in the strongly connected component, which owns the largest eigenvalue of the adjacency matrix. In this paper, based on reachability between strongly connected components, we consider not only the largest eigenvalue but also the other smaller ones to attenuate the adjacency matrix hierarchically; and obtain a measure from the power series of the hierarchically attenuated adjacency matrix. Consequently, we propose the hierarchical alpha centrality, which can yield higher scores for nodes at higher hierarchies of reachability in a digraph.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"45 1","pages":"51 - 64"},"PeriodicalIF":1.0,"publicationDate":"2020-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250x.2020.1711753","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42364403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1
Positive algorithmic bias cannot stop fragmentation in homophilic networks 正算法偏差不能阻止同源网络中的碎片化
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-09 DOI: 10.1080/0022250X.2020.1818078
C. Blex, T. Yasseri
{"title":"Positive algorithmic bias cannot stop fragmentation in homophilic networks","authors":"C. Blex, T. Yasseri","doi":"10.1080/0022250X.2020.1818078","DOIUrl":"https://doi.org/10.1080/0022250X.2020.1818078","url":null,"abstract":"ABSTRACT Fragmentation, echo chambers, and their amelioration in social networks have been a growing concern in the academic and non-academic world. This paper shows how, under the assumption of homophily, echo chambers and fragmentation are system-immanent phenomena of highly flexible social networks, even under ideal conditions for heterogeneity. We achieve this by finding an analytical, network-based solution to the Schelling model and by proving that weak ties do not hinder the process. Furthermore, we derive that no level of positive algorithmic bias in the form of rewiring is capable of preventing fragmentation and its effect on reducing the fragmentation speed is negligible.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"46 1","pages":"80 - 97"},"PeriodicalIF":1.0,"publicationDate":"2020-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250X.2020.1818078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47752323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 20
Phase transitions in the edge/concurrent vertex model 边/并发顶点模型中的相变
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-04 DOI: 10.1080/0022250X.2020.1746298
C. Butts
{"title":"Phase transitions in the edge/concurrent vertex model","authors":"C. Butts","doi":"10.1080/0022250X.2020.1746298","DOIUrl":"https://doi.org/10.1080/0022250X.2020.1746298","url":null,"abstract":"ABSTRACT Although it is well known that some exponential family random graph model (ERGM) families exhibit phase transitions (in which small parameter changes lead to qualitative changes in graph structure), the behavior of other models is still poorly understood. Recently, Krivitsky and Morris have reported a previously unobserved phase transition in the edge/concurrent vertex family (a simple starting point for models of sexual contact networks). Here, we examine this phase transition, showing it to be a first-order transition with respect to an order parameter associated with the fraction of concurrent vertices. This transition stems from weak cooperativity in the recruitment of vertices to the concurrent phase, which may not be a desirable property in some applications.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"45 1","pages":"135 - 147"},"PeriodicalIF":1.0,"publicationDate":"2020-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250X.2020.1746298","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49144351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3
By the content of their character? Discrimination, social identity, and observed distributions of income 通过他们性格的内容?歧视、社会认同和观察到的收入分配
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-02 DOI: 10.1080/0022250X.2019.1630832
Paulo L. dos Santos, N. Wiener
{"title":"By the content of their character? Discrimination, social identity, and observed distributions of income","authors":"Paulo L. dos Santos, N. Wiener","doi":"10.1080/0022250X.2019.1630832","DOIUrl":"https://doi.org/10.1080/0022250X.2019.1630832","url":null,"abstract":"ABSTRACT This paper applies information-theoretic measures to consider the systemic effects on individual incomes of complex patterns of social and economic discrimination by race, ethnicity, and gender in the U.S. It estimates non-parametric indices of joint, conditional or incremental, and mutual information between income, social identity, and observable economic characteristics obtained using large-scale cross-sectional data from that economy. The paper advances new conceptual and empirical approaches to the nature and measurement of economic discrimination and inequalities of opportunity, founded on the formal informativeness of measures of social identity on economic outcomes. Estimated values for indices of informational association also cast new light on the effects of the intersections of gender and race/ethnicity on income, perverse patterns in the effects of education across different groups, and a few notable dynamic changes in patterns of income distribution in that economy over the past 40 years.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"44 1","pages":"12 - 41"},"PeriodicalIF":1.0,"publicationDate":"2020-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250X.2019.1630832","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42651209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 5
A differential-equation-based model of the glass ceiling in career progression 基于微分方程的职业发展玻璃天花板模型
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-02 DOI: 10.1080/0022250X.2019.1611576
Lennon Ó Náraigh
{"title":"A differential-equation-based model of the glass ceiling in career progression","authors":"Lennon Ó Náraigh","doi":"10.1080/0022250X.2019.1611576","DOIUrl":"https://doi.org/10.1080/0022250X.2019.1611576","url":null,"abstract":"ABSTRACT We introduce a model based on Ordinary Differential Equations to describe how two mutually exclusive groups progress through a career hierarchy, whether in a single organization, or in an entire economic sector. The intended application is to gender imbalance at the top of the academic hierarchy in European Universities; however, the model is entirely generic and may be applied in other contexts also. Previous research on gender imbalance in European universities has focused on large-scale statistical studies. Our model represents a point of departure, as it is deterministic (i.e., based on Ordinary Differential Equations). The model requires a precise definition of the progression rates for the different groups through the hierarchy; these are key parameters governing the dynamics of career progression. The progression rate for each group can be decomposed into a product: the proportion of group members at a low level in the hierarchy who compete for promotion to the next level a given year, multiplied by the in-competition success rate for the group in question. Either of these two parameters can differ across the groups under consideration; this introduces a group asymmetry into the organization’s composition. We introduce a glass-ceiling index to summarize this asymmetry succinctly. Using case studies from the literature, we demonstrate how the mathematical framework can pinpoint the proximate cause of the glass ceiling in European academia.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"44 1","pages":"42 - 64"},"PeriodicalIF":1.0,"publicationDate":"2020-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250X.2019.1611576","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48280308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4
Prevalence and Reasons for Use of Flavored Cigars and ENDS among US Youth and Adults: Estimates from Wave 4 of the PATH Study, 2016-2017. 美国青少年和成年人使用加味雪茄和 ENDS 的流行率和原因：2016-2017年PATH研究第4波的估计值。
IF 2.3 4区 社会学
Journal of Mathematical Sociology Pub Date : 2020-01-01 DOI: 10.5993/AJHB.44.1.8
Brian L Rostron, Yu-Ching Cheng, Lisa D Gardner, Bridget K Ambrose
{"title":"Prevalence and Reasons for Use of Flavored Cigars and ENDS among US Youth and Adults: Estimates from Wave 4 of the PATH Study, 2016-2017.","authors":"Brian L Rostron, Yu-Ching Cheng, Lisa D Gardner, Bridget K Ambrose","doi":"10.5993/AJHB.44.1.8","DOIUrl":"10.5993/AJHB.44.1.8","url":null,"abstract":"<p><p><b>Objectives:</b> In this study, we present updated estimates of use prevalence, flavor use, and flavors as a reason for use among US cigar and electronic nicotine delivery system (ENDS) users. <b>Methods:</b> Data come from Wave 4 of the Population Assessment of Tobacco and Health (PATH) Study and were collected between December 2016 and early January 2018. Results are presented for youth (12-17 years), young adults (18-24 years), and adults (25+ years). <b>Results:</b> Approximately half (50.7%) of young adults reported having ever used an ENDS product with 83.7% reporting that their first ENDS product was flavored. Flavor use was particularly high among current (past 30-day) ENDS users at 97.0% among youth, 96.8% among young adults, and 81.2% among adults. For cigars, cigarillos were the most commonly used type among youth and young adults. Flavor use was highest among current cigarillo and filtered cigar users, with close to half of current users reporting flavor use across age groups. <b>Conclusions:</b> Flavored product use is common among ENDS and cigar users.</p>","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"29 1","pages":"76-81"},"PeriodicalIF":2.3,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918456/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81282291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A dynamic process reference model for sparse networks with reciprocity 具有互易性的稀疏网络的动态过程参考模型
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2019-12-31 DOI: 10.1080/0022250X.2020.1795652
C. Butts
{"title":"A dynamic process reference model for sparse networks with reciprocity","authors":"C. Butts","doi":"10.1080/0022250X.2020.1795652","DOIUrl":"https://doi.org/10.1080/0022250X.2020.1795652","url":null,"abstract":"ABSTRACT Many social and other networks exhibit stable size scaling relationships, such that features such as mean degree or reciprocation rates change slowly or are approximately constant as the number of vertices increases. Statistical network models built on top of simple Bernoulli baseline (or reference) measures often behave unrealistically in this respect, leading to the development of sparse reference models that preserve features such as mean degree scaling. In this paper, we generalize recent work on the micro-foundations of such reference models to the case of sparse directed graphs with non-vanishing reciprocity, providing a dynamic process interpretation of the emergence of stable macroscopic behavior.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"46 1","pages":"1 - 27"},"PeriodicalIF":1.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0022250X.2020.1795652","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46399521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4
Semicooperation under curved strategy spacetime 弯曲策略时空下的半合作
IF 1 4区 社会学
Journal of Mathematical Sociology Pub Date : 2019-12-27 DOI: 10.1080/0022250x.2023.2180002
P. Pramanik, A. Polansky
{"title":"Semicooperation under curved strategy spacetime","authors":"P. Pramanik, A. Polansky","doi":"10.1080/0022250x.2023.2180002","DOIUrl":"https://doi.org/10.1080/0022250x.2023.2180002","url":null,"abstract":"Mutually beneficial cooperation is a common part of economic systems as firms in partial cooperation with others can often make a higher sustainable profit. Though cooperative games were popular in 1950s, recent interest in non-cooperative games is prevalent despite the fact that cooperative bargaining seems to be more useful in economic and political applications. In this paper we assume that the strategy space and time are inseparable with respect to a contract. Under this assumption we show that the strategy spacetime is a dynamic curved Liouville-like 2-brane quantum gravity surface under asymmetric information and that traditional Euclidean geometry fails to give a proper feedback Nash equilibrium. Cooperation occurs when two firms' strategies fall into each other's influence curvature in this strategy spacetime. Small firms in an economy dominated by large firms are subject to the influence of large firms. We determine an optimal feedback semi-cooperation of the small firm in this case using a Liouville-Feynman path integral method.","PeriodicalId":50139,"journal":{"name":"Journal of Mathematical Sociology","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47998996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 7
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