Do resources of network members help in help seeking? Social capital and health information search

Does social capital as resources of network members affect health information search? Analyzing data from the 2004 General Social Survey in the United States, this study measures two social capital indicators (average education of network members and proportion of network members with a high school degree or higher) using the name generator. Most results are consistent using those two indicators. Both indicators are positively associated with frequency of health information seeking and seekers’ frequency of use of two sources (friends or relatives and the Internet). Also average education of network members is positively associated with seekers’ diversity of used sources and frequency of consultation with medical professionals. But neither indicator is associated with seekers’ frequency of use of other four sources (health-related magazines or newsletters, general magazines, daily newspapers, and radio or television programs). The findings demonstrate the theoretical utility of social capital in the social dynamics of medical help-seeking.     

Attachment and Self‐Efficacy in Career Search Activities: A Structural Model

The author integrated attachment theory with social cognitive career theory (SCCT) to examine how attachment styles influence the career search self‐efficacy activities of interviewing, networking, job searching, and personal exploration. Using an undergraduate sample (N = 275, 81% women), the author tested a structural model. Results indicated that anxious attachment style was negatively related to interviewing self‐efficacy, whereas avoidant attachment style was negatively related to networking, job searching, and personal exploration self‐efficacy. Theoretical implications based on these findings provide support for an integrative model of attachment theory with SCCT. Career counselors are encouraged to consider clients’ attachment styles when working with individuals who are searching for employment. To help address the limitations of the study, future researchers could test the applicability of the current model with a more diverse sample.     

Tactical production and distribution planning with dependency issues on the production process

Tactical production-distribution planning models have attracted a great deal of attention in the past decades. In these models, production and distribution decisions are considered simultaneously such that the combined plans are more advantageous than the plans resolved in a hierarchical planning process. We consider a two-stage production process, where in the first stage raw materials are transformed into continuous resources that feed the discrete production of end products in the second stage. Moreover, the setup times and costs of resources depend on the sequence in which they are processed in the first stage. The minimum scheduling unit is the product family which consists of products sharing common resources and manufacturing processes. Based on different mathematical modelling approaches to the production in the first stage, we develop a sequence-oriented formulation and a product-oriented formulation, and propose decomposition-based heuristics to solve this problem efficiently. By considering these dependencies arising in practical production processes, our model can be applied to various industrial cases, such as the beverage industry or the steel industry. Computation tests on instances from an industrial application are provided at the end of the paper.     

从启蒙者到依附者——“17年诗歌”诗人角色的易换

回望17年诗坛,我们在大多数诗歌千篇一律的声音里发现,那个自"五四"以来就置身于"启蒙"潮头的身影,在三十年后竟然成为政策的传声筒、政治的依附者。社会状况、读者对象、诗歌审美标准、诗人心态的改变,及其病态的"先锋情结",是这代诗人们最终选择"依附者"角色的至关重要的因素。     

Bootstrap methods for bias correction and confidence interval estimation for nonlinear quantile regression of longitudinal data

This paper examines the use of bootstrapping for bias correction and calculation of confidence intervals (CIs) for a weighted nonlinear quantile regression estimator adjusted to the case of longitudinal data. Different weights and types of CIs are used and compared by computer simulation using a logistic growth function and error terms following an AR(1) model. The results indicate that bias correction reduces the bias of a point estimator but fails for CI calculations. A bootstrap percentile method and a normal approximation method perform well for two weights when used without bias correction. Taking both coverage and lengths of CIs into consideration, a non-bias-corrected percentile method with an unweighted estimator performs best.     

An examination of student and provider perceptions of voluntary sector social work placements in Northern Ireland

Practice based learning in Northern Ireland is a core element of social work education and comprising 50% of the degree programme for undergraduate and postgraduate students. This article presents evidence about the perceptions of practice learning from voluntary sector/non-government organisation (NGO) placement providers and final year social work students on social work degree programmes in Northern Ireland in 2011. It draws on data from 121 respondents from189 final year students and focus group interviews with voluntary sector providers offering 16% (85) of the total placements available to students. The agencies who participated in the research study provide a total of 55 PLOs to social work students, and are therefore fairly representative in terms of voluntary sector (NGO) provision. The article locates these data in the context of practice learning pedagogy and the changes introduced by the Regional Strategy for Practice Learning Provision in Northern Ireland 2010–2015. Several themes emerged including; induction, support and guidance, practice educator/student relationship, professional identity and confidence in risk assessment and decision-making. Social work educators, placement providers and employers must be cognisant of newly qualified social workers’ needs in terms of consolidating knowledge within the formative stages of their professional development.     

Precise large deviations for the difference of two sums of END random variables with heavy tails

Assume that there are two types of insurance contracts in an insurance company, and the ith related claims are denoted by {X_ij, j ? 1}, i = 1, 2. In this article, the asymptotic behaviors of precise large deviations for non random difference ∑^n₁(t)_{j = 1}X_1j ? ∑^n₂(t)_{j = 1}X_2j and random difference ∑^N₁(t)_{j = 1}X_1j ? ∑^N₂(t)_{j = 1}X_2j are investigated, and under several assumptions, some corresponding asymptotic formulas are obtained.     

美学研究之当下论域与理论前景

近年来,我国的美学研究蓬勃发展,美学基本原理探讨成效显著,中外美学史梳理有条不紊,部门美学研究异彩纷呈,流派美学研究乐此不疲。其主要特征有五:一是参与者众,成果五花八门;二是师承关系明显,排异性强;三是教材各异,令人无所适从;四是思辨者多,实验取证者少,归纳总结者多,创新者少;五是学位论文俨然成为新见主产地。研究方法主要有哲学思辨法、心理还原法以及语义分析、经验主义、社会学、历史学、系统论等。不足之处即为缺乏理论创新,鲜有大师级人物出现,故此未来之研究应以创新为第一要务,力求把深奥难懂的美学理论阐发得通俗易懂。     

Reversible jump Markov chain Monte Carlo algorithms for Bayesian variable selection in logistic mixed models

In this article, to reduce computational load in performing Bayesian variable selection, we used a variant of reversible jump Markov chain Monte Carlo methods, and the Holmes and Held (HH) algorithm, to sample model index variables in logistic mixed models involving a large number of explanatory variables. Furthermore, we proposed a simple proposal distribution for model index variables, and used a simulation study and real example to compare the performance of the HH algorithm with our proposed and existing proposal distributions. The results show that the HH algorithm with our proposed proposal distribution is a computationally efficient and reliable selection method.     

语义场理论对科技术语翻译的启示从——“水资源管理”一词的英汉互译谈起

科技术语在不同语言之间的翻译是一个复杂的语义匹配过程，如何在考虑相关术语使用现状的基础上将新产生的科技术语准确翻译为其它语言是科技工作者和术语研究者关注的重要问题。以语义场理论为分析框架，通过分析以"水资源管理"及其相关术语为代表的英汉互译，结果发现：不同科技术语在同一语义场所涵盖的语义范围将会随着相关研究深化带来的术语界定细化而发生相应的动态变化；新兴科技术语的翻译要充分考虑其所在语义场其它相关科技术语的翻译先例和使用现状所带来的影响，在翻译准确性和解读便利性之间做出适当的平衡。这是造成"水资源管理"及相关术语英汉互译处理极为复杂的重要原因之一，需要科技翻译者在工作实践中多加注意。