A Graphical Tool for Interpreting Regression Coefficients of Trinomial Logit Models

Multinomial logit (also termed multi-logit) models permit the analysis of the statistical relation between a categorical response variable and a set of explicative variables (called covariates or regressors). Although multinomial logit is widely used in both the social and economic sciences, the interpretation of regression coefficients may be tricky, as the effect of covariates on the probability distribution of the response variable is nonconstant and difficult to quantify. The ternary plots illustrated in this article aim at facilitating the interpretation of regression coefficients and permit the effect of covariates (either singularly or jointly considered) on the probability distribution of the dependent variable to be quantified. Ternary plots can be drawn both for ordered and for unordered categorical dependent variables, when the number of possible outcomes equals three (trinomial response variable); these plots allow not only to represent the covariate effects over the whole parameter space of the dependent variable but also to compare the covariate effects of any given individual profile. The method is illustrated and discussed through analysis of a dataset concerning the transition of master’s graduates of the University of Trento (Italy) from university to employment.     

The context of employment discrimination: interpreting the findings of a field experiment

Although field experiments have documented the contemporary relevance of discrimination in employment, theories developed to explain the dynamics of differential treatment cannot account for differences across organizational and institutional contexts. In this article, I address this shortcoming by presenting the main empirical findings from a multi‐method research project, in which a field experiment of ethnic discrimination in the Norwegian labour market was complemented with forty‐two in‐depth interviews with employers who were observed in the first stage of the study. While the experimental data support earlier findings in documenting that ethnic discrimination indeed takes place, the qualitative material suggests that theorizing in the field experiment literature have been too concerned with individual and intra‐psychic explanations. Discriminatory outcomes in employment processes seems to be more dependent on contextual factors such as the number of applications received, whether requirements are specified, and the degree to which recruitment procedures are formalized. I argue that different contexts of employment provide different opportunity structures for discrimination, a finding with important theoretical and methodological implications.     

腔内电光调制激光系统的混沌模拟

采用数值模拟的方法讨论了带反馈的腔內电光调制激光系统功率输出的分叉和混沌行为,得到了输出功率随控制参数变化的分叉图,和一些定量结果。     

中国早期共产主义者对党建思想的探索

早期共产主义者学习和利用马列主义政党学说的基本原理来解决在中国建立政党的过程中遇到的具体问题,提出为什么要建立政党、如何建立和建设政党等党建根本问题。     

冷战后中国多边首脑外交的特点与动因

冷战后，中国以亚太地区和联合国为中心，开展了积极的多边首脑外交。其具有力度不断加大、内容逐渐多元、外在制度完备、内在缺乏约束等特点。经济全球化、集团化和全球性问题的日益突出，则是中国开展多边首脑外交的重要推动力量。     

论资本市场全球一体化趋势

资本市场全球一体化是当前全球资本市场发展的基本趋势。是指相对独立的全球各主要资本市场日益融合形成的统一市场网络组织结构体系。表现为市场组织形式的全球网络化 ;筹资主体的国际化 ;投资者的机构化及投资活动的国际化 ;资本流动的全球化 ;同质的金融资产价格趋同化 ;金融机构经营业务的混业化和全球化。资本市场全球一体化降低了市场主体的交易成本 ,提高了市场效率 ;为一些国家调节国际收支失衡与国际储备的保值增值提供了便利条件 ;有利于长期资本的优化配置 ,促进世界经济增长。同时也使各国运用货币政策调控宏观经济的有效性降低 ;市场的系统性风险增大 ;金融监管面临新的挑战     

20世纪上半叶制约中国社会发展的决定性因素

20世纪上半叶在以战争与革命为主题的时代背景下 ,外国帝国主义的侵略和俄国十月革命对中国社会发展产生了重大影响。半殖民地半封建的社会形态、错综复杂的阶级结构和阶级关系、2 0世纪中国的两大历史主题等也是制约中国社会发展的重要因素。正是由于对这四个因素的正确认识和准确把握 ,中华民族实现了 2 0世纪上半叶中国社会的巨大变革     

语言问题的理论思索

从功能的角度考察语言的本质 ,是诸多著作理解语言性质的哲学基础。功能论固然看到了语言对于人类社会的决定性作用 ,然而却丝毫未触及语言自身的结构特征和机制。仅从功能的角度认识语言是不够的 ,还必须深入到语言结构内部 ,对语言的特征、机制及结构体系进行多角度观察 ,才能较为完整地揭示语言的本质     

ERP在钢铁贸易企业的应用研究

以上海宝钢技术经济发展公司为对象,根据公司对提升内部管理及业务流程规范化的要求,研究了公司建立ERP系统的定位及目标,提出应建立以钢材贸易和钢铁产品深加工为主业的ERP体系,实现流通过程中的价值增值.在分析存在的主要问题的基础上,提出了ERP的模式、流程设计及采购业务、库存业务的解决方案.     

从计算机英语词汇中的隐喻现象谈构词特点

由于计算机和网络的出现,计算机英语词汇日益增多。有些新词汇是通过联想,经历语义变化及隐喻修饰后产生的。更多的计算机英语词汇是通过赋新、缩略、合成等方法构成的。对它们构词的特点进行分析并找出规律,可便于计算机使用者更好地理解词义。