Brief Report: The Role of Ego Development in Psychosocial Adjustment Among Boys With Delayed Puberty

This study examined the role of ego development, as measured with the Washington University sentence completion test, in the relationship between pubertal maturation and psychosocial adjustment (self-image and depression) in adolescent boys. The data consisted of 73 boys between 14 and 16 years of age. The results indicated that late maturing boys were also psychologically more immature, and that they experienced negative feelings about sexuality. Additionally, higher ego development was associated with elevated levels of anxiety and depression among late maturing boys. In boys with average pubertal maturation, higher ego development was associated with lower levels of anxiety and depression.     

基于CFD技术的高效节能冷柜研发

针对目前冷柜的研究开发主要靠经验和简单的计算,存在产品的开发周期长,费用高的缺点,提出了基于CFD 技术的冷柜研发,介绍了CFD技术、封闭式冷冻陈列柜的结构及其热负荷组成。建立三维非稳态模型,编译用户自定义 函数即UDF( User-Defined Function)程序,利用有限容积法优化冷柜内温度场／流场。应用结果表明基于CFD技术的冷 柜研发不仅具有效率高、能耗低等特点,而且可以掌握柜内温度分布规律、改善了柜内部气流组织状况,提高了温度分布 的均匀性,提高食物保鲜效果。     

Long periods with uninterrupted muscle activity related to neck and shoulder pain

The aim was to analyze the relationship between periods with uninterrupted neck muscle activity for ≥ 4 min and neck and shoulder pain. The trapezius muscle activity was recorded bilaterally on 40 young workers and students during a full shift. Neck and shoulder pain, mechanical work load and decision control were reported at the same time as the muscle activity recording and 6 months later. A dose-response relationship was found between uninterrupted muscle activity and neck and shoulder pain, with a ten-fold higher risk for the group with more than half, compared to less than a third, of the shift with uninterrupted muscle activity. Self-reported mechanical work load showed a small but protective effect related to pain. Gender and decision control did not emerge as important risk factors in this model. In conclusion, this study indicates that work or other exposures that contains long periods with uninterrupted neck muscle activity of 4 min duration or longer should be minimized to reduce risk of neck and shoulder pain.     

Stories and the Rhetoric of Contrariety: Subtexts of Organizing (Change)

Stories are an important part of organizational life that scholars have studied from many different perspectives. In this paper, we contribute a new way of exploring the meaning of stories. We use a concept from classical rhetoric, the enthymeme, to help reveal the particular underlying "logic" contained in the story form, and we show that the construction of this logic accounts, in part, for the engaging nature of the stories. We show that storytellers use enthymemes in the construction of their stories and also that scholars can use enthymemes to analyze stories. Understanding the enthymeme and its use in the story form enables interpreters to disentangle the argument often embedded in a story and to surface meanings that are implicit and powerful. In this paper, we focus attention on and examine such implicit meanings in four organizational stories of change in two city administrations, in order to illustrate the role of enthymeme in organizational rhetoric.     

Physical, social and emotional function after work accidents: a medicolegal perspective

The aim of this study was to analyse social and functional consequences of work accidents in a group of workers' compensation claimants who had been referred from the National Insurance Administration for a medicolegal assessment. The injured workers were evaluated on average 3 years after their accidents. Their medical records were analysed, and each injury was scored according to the Abbreviated Injury Scale (AIS). Participants completed the Short Form Questionnaire (SF-36). Factors relating to outcome on SF-36 were analysed using univariate and multivariate methods. 191 claimants returned the SF-36 (62%), 83% of the respondents had an AIS score of less than two, 33% reported working full time. Compared to population-based norms, the respondents reported significantly reduced health on all eight scales of SF-36. Better health and function was mainly associated with a higher level of education and more serious injuries. The extent of social support in the workplace after the accident was only partly related to outcome. The importance of psychosocial factors when making injury assessments in a medicolegal setting is highlighted.     

URBAN TRANSPORT AND CRIME: EVIDENCE FROM UNANTICIPATED MASS TRANSIT STRIKES

We examine the effects of mass transit strikes on criminal behavior in Los Angeles County utilizing a unique dataset of reported crimes between 2000 and 2007. Geocoded location and time information pertaining to each offense accommodates a fine grained difference‐in‐differences panel data analysis. We find that in locations affected by the strike, aggravated assaults rose by 18.7% while aggregate property crimes increased by 5.7%, relative to their mean. This increase in crime was disproportionately larger in lower income neighborhoods, which report higher usage of mass transit, suggesting local isolation of both criminals and victims as a mechanism. (JEL J52, K42, K31)     

Managing Co‐creation Design: A Strategic Approach to Innovation

Co‐creation offers firms and their network of actors significant opportunities for innovation, as each actor offers access to new resources through a process of resource integration. However, despite the significant advantages that co‐creation can offer, there is surprisingly little research providing a strategic approach for identifying the most advantageous co‐creation opportunities, especially when many possible options are available. Recently, scholars have called for research that develops tools and processes related to co‐creation. This study addresses these priorities, making two contributions. First, in contrast to previous work considering co‐creation more generally, or focusing on one specific form only, e.g. co‐production, this paper offers a detailed and granular approach to co‐creation design. A co‐creation design framework is developed, which incorporates multiple design dimensions and categories that can reveal new co‐creation opportunities. Second, the research extends the application of a design approach, specifically within the context of co‐creative activities. The authors use field‐based research with senior executives to develop a framework that includes key co‐creation design elements. A morphological approach is used to explore how a lead firm can identify attractive co‐creation opportunities. An innovation solution in one organization provides an illustration of how the co‐creation design framework can be applied.