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1.
Cathy W. S. Chen Hong Than-Thi Mike K. P. So 《Journal of Statistical Computation and Simulation》2019,89(2):191-210
This paper proposes a new hysteretic vector autoregressive (HVAR) model in which the regime switching may be delayed when the hysteresis variable lies in a hysteresis zone. We integrate an adapted multivariate Student-t distribution from amending the scale mixtures of normal distributions. This HVAR model allows for a higher degree of flexibility in the degrees of freedom for each time series. We use the proposed model to test for a causal relationship between any two target time series. Using posterior odds ratios, we overcome the limitations of the classical approach to multiple testing. Both simulated and real examples herein help illustrate the suggested methods. We apply the proposed HVAR model to investigate the causal relationship between the quarterly growth rates of gross domestic product of United Kingdom and United States. Moreover, we check the pairwise lagged dependence of daily PM2.5 levels in three districts of Taipei. 相似文献
2.
Carlos J. Pérez-González Arturo J. Fernández 《Journal of Statistical Computation and Simulation》2019,89(13):2489-2504
An accurate procedure is proposed to calculate approximate moments of progressive order statistics in the context of statistical inference for lifetime models. The study analyses the performance of power series expansion to approximate the moments for location and scale distributions with high precision and smaller deviations with respect to the exact values. A comparative analysis between exact and approximate methods is shown using some tables and figures. The different approximations are applied in two situations. First, we consider the problem of computing the large sample variance–covariance matrix of maximum likelihood estimators. We also use the approximations to obtain progressively censored sampling plans for log-normal distributed data. These problems illustrate that the presented procedure is highly useful to compute the moments with precision for numerous censoring patterns and, in many cases, is the only valid method because the exact calculation may not be applicable. 相似文献
3.
ABSTRACTThe circular economy (CE) has become a matter of urban development. A literature review shows that the CE debate is biased toward technology-driven industrial change, while bracketing broader socio-political interests. We address this gap by exploring the political economy of scale of the CE. Looking into the case of Brussels (Belgium), a city that has recently adopted the CE as part of its socio-economic strategy, we explore how the anticipated transition to a ‘circular city’ chimes with long-standing urban development agendas. While there is little evidence of stable growth coalitions between corporate and political elites, we argue that the CE provides an ‘urban sustainability fix’ by selectively incorporating ecological goals in urban governance strategies. We further scrutinise the landscape of diverse and heterogenous CE practices in food and transport, highlighting how they are regulated and organised, what labour conditions they offer, and how they are anchored in urban space. 相似文献
4.
Carolyn S. Henry Todd A. Spencer Chao Liu Scott W. Plunkett 《Marriage & Family Review》2020,56(2):174-191
AbstractBased on the value of children theory, the purpose of this study was to develop and establish the factor structure and internal consistency reliability of the Advantages of Children Scale (ACS), a self-report measure of a modification of Hoffman and Hoffman’s value scheme of the psychological needs children meet for their parents. Data were collected from 685 emerging adult men identifying as Latino or Caucasian who were not parents. Results of the confirmatory factor analysis found a good fit for the six hypothesized subscales on the ACS: connectedness, expansion of self, family heritage, adult status and social identity, development of self, and family maintenance. We discuss potential applications of the measure in research and practice. 相似文献
5.
政府是污染减排的重要主体,了解其行为对污染减排的作用对提升污染减排效果及实现中国绿色发展具有重要意义。创造性地将政府减排目标纳入研究框架,构建面板门槛模型,从工业污染排放总量的角度分析政府减排目标、产业结构、经济规模等因素对地方污染减排的影响,并用工业污染物强度进行稳健性检验。结果显示,政府减排目标对污染减排的作用存在阶段性不同:经济发展初级阶段,政府减排目标对污染排放总量的作用方向为正; 经济发展水平较高时,作用方向为负; 两者之间存在适应性调整阶段,作用方向具有不确定性,但总体由正向作用向负向作用转变。产业结构对工业污染排放总量的作用方向因污染物种类而异,经济规模对工业污染排放总量作用方向为正。 相似文献
6.
This article looks at the representation of scale in the 2014 film The Theory of Everything, identifying moments that relate to three concerns: firstly, how disabled people experience scale issues at an all too practical level in daily life; secondly, how Hawking’s experience of scale at the level of both body and mind is (a)typical of the way it is experienced by disabled people generally; and, thirdly, how a focus on the film can prompt some rethinking of perspectives both within disability studies and within the conceptualisation of scale more broadly. 相似文献
7.
8.
文章以中国民营企业家为研究对象,采用跨案例分析法探讨企业家伦理领导行为的内涵结构及特征,并在此基础上开发具有中国情境特点的民营企业家伦理领导行为量表。研究结果显示:受中国儒家伦理文化影响,中国民营企业家伦理领导行为包括"德性修养""集体动机"和"天下情怀"三个维度;企业家的伦理领导行为表现为"修己安人"的关系内涵,企业家自身不仅践行着较高的伦理道德标准,且将之扩展至对员工、组织行为的引导和规范;本研究开发的中国民营企业家伦理领导行为量表具有良好的信度和效度。文章丰富了西方伦理型领导理论和高阶理论研究,对中国本土企业家如何提高领导力有着重要启示。 相似文献
9.
Ana Urbiola Guillermo B. Willis Josefa Ruiz-Romero Miguel Moya 《Revista de Psicología Social》2018,33(1):51-80
The aim of this research was to adapt and validate the Concern with Acting Prejudiced (CAP) scale for a Spanish sample. This measure evaluates concern about appearing prejudiced to others or oneself and the motivation not to deviate from personal egalitarian standards. First, we completed the translation and an item content validity analysis. Then, in Study 1 (N = 198), we conducted an exploratory factor analysis. In Study 2 (N = 383), we conducted a confirmatory analysis of the unifactorial structure of the Spanish version of the scale and examined its validity. In Study 3 (N = 89), we explored the moderating role of participants’ concern with acting prejudiced in the relation between implicit prejudice and explicit prejudice. The results confirmed the unifactorial structure of the scale, its appropriate psychometric properties and its predictive validity. Moreover, we confirmed that the CAP moderated the relation between implicit and explicit prejudice. In participants with a low concern with acting prejudiced, implicit prejudice was positively related with modern prejudice; in participants with a high concern with acting prejudiced, these variables were not related. 相似文献
10.
张毅 《宝鸡文理学院学报(社会科学版)》2006,26(1):9-11
“全面小康社会”、“和谐社会”、“资源节约型、环境友好型社会”、“学习型社会”的建设,均离不开创新活动,尤其是“自主创新”。“自主创新”是提高科技水平和经济竞争力的关键,也是调整经济结构、转变经济增长方式的中心环节。 相似文献