Dynamic selection of dispatching rules for job shop scheduling

Although the academic contribution to job shop scheduling is abundant, its impact on practice has been minimal. The most preferred approach to job shop scheduling in the industry is dispatching rules. A major criticism against dispatching rules is that there is no single universal rule. The effective choice of dispatching rules depends on the scheduling criterion and existing job shop conditions. In this paper, the authors have proposed a scheduling method based on the analytic hierarchy process, that dynamically selects the most appropriate dispatching rule from several candidate rules. The selection is based on the existing job shop conditions. This method is applied to two formal job shop problems, and the results for single dispatching rules are inferior to the method proposed in this paper.     

Job crafting and well-being among school principals: The role of basic psychological need satisfaction and frustration

This study investigates the associations between school principals’ job crafting and well-being. Drawing on the job demands-resources approach of the job crafting model and self-determination theory, we hypothesized that need satisfaction and need frustration act as likely mechanisms between the positive and negative effects of job crafting behaviors and work-related well-being (work engagement and burnout). Using cross-sectional data collected from a sample of Finnish school principals (n = 518), our structural equation model revealed that crafting structural job resources was positively associated with need satisfaction and negatively with need frustration. Increasing challenge job demands was positively associated with need satisfaction, which, in turn, was associated with higher work-related well-being. In addition, crafting structural job resources was directly positively linked to burnout as well as work engagement. Moreover, we found that decreasing hindrance demands was positively associated with burnout and negatively associated with work engagement via need frustration. No associations were found between crafting social resources, indicators of basic psychological needs, or work-related well-being. These findings provide insights into how principals determine their own basic psychological needs via job crafting, and how this is reflected in their work-related well-being. The study advances job crafting theory and self-determination theory, with important implications for practice and future research.     

The transition from university to work: a multilevel approach to the analysis of the time to obtain the first job

The aim of the paper is to characterize the factors that determine the transition from university to work as well as to evaluate the effectiveness of universities and course programmes with respect to the labour market outcomes of their graduates. The study is focused on the analysis of the time to obtain the first job, taking into account the graduates' characteristics and the effects pertaining to course programmes and universities. For this a three-level discrete time survival model is used, where the logit of the hazard—conditionally on the random effects at course programme and university level—is a linear function of the covariates. The analysis is accomplished by using a large data set from a survey on job opportunities for the 1992 Italian graduates.     

Job relocation,sources of stress,and sense of home

The social impact of job relocation on families is explored in this research. Based on interviews with 60 persons, who also share the experiences of spouses and children, this study suggests that job relocation is potentially harmful to families. Those who relocate initially experience two varieties of stress: operational stress, resulting from the new job and setting-up activities in the new community, and emotional stress resulting from family-related activities. It was found that those who relocate for work often face forced self-reliance, a lack of family support, and an increase in family demands, although the overall stress was reduced for persons taking white-collar or professional positions because of employer assistance. It was found that much of the initial stress dissipated with time, and when asked to reflect on their experiences most recast the initially difficult time as an endured challenge or learning experience. A vibrant 'sense of home', based on fond memories and people who care about them, served as an anchor for many of those studied. Strong evidence was found of a continued search for one's roots among many of the persons studied, especially those who were older who spoke of being adrift and of pursuing things at the expense of home and family while away. Many persons chose to return to their 'home' area, to work or retire, seeking to be near what was important in their lives. Cette recherche traite de l'impact social sur les familles du déménagement nécessité par un nouveau travail. Basée sur des entretiens avec soixante personnes qui partagent aussi les expériences des conjoints et des enfants, cette étude suggère qu'un tel déménagement est potentiellement nuisible aux familles. Ceux qui déménagent éprouvent tout d'abord deux sortes de stress: le stress operationnel resultant du nouveau travail et des efforts pour s'installer dans la nouvelle communauté, et le stress émotionnel dÛ aux activités familiales. Nous avons constaté que ceux qui déménagent à cause du travail doivent souvent faire face à une nouvelle autonomie inattendue, une absence du soutien familial habituel et une augmentation des exigences de la famille nucléaire, mais il faut noter que le stress total à été reduit pour les professionnels grâce à l'aide des employeurs. Nous avons constaté aussi que la plupart du stress initial se dissipe à la longue et que presque tous les sujets revoient cette période difficile comme un défi subi ou une expérience éducative. Ce qui a servi comme facteur stabilisant pour bien des sujets c'était leur très fort sentiment d'appartenir à un groupe familial, sentiment basésur les chers souvenirs de la famille. Nous avons également découvert l'évidence que beaucoup de sujets eétudieés continuent à reéchercher leurs racines familiales, surtout ceux qui eétaient plus âgés et qui disaient que pendant leur absence il ressentaient mal leur isolation ainsi que la recherche futile des choses. Beaucoup parmi eux ont choisi de rentrer dans leur région pour travailler ou prendre leur retraite, voulant être proches de ce qui fut important dans leur vie.     

成都市实现充分就业的供需平衡分析与对策研究

本文在对“十一五”期间成都市劳动力市场上的劳动力供给规模与现有经济发展趋势下的就业市场需求预测的基础上,明确了成都市实现充分就业的难点在于劳动力市场上大量的劳动力供给与有限的就业岗位之间的矛盾。为此,较针对性地提出了实现充分就业的若干思路和措施。     

基于杂合遗传算法的工艺路线可变Job Shop调度研究

提出一种将遗传算法与启发式规则、模拟退火法等搜索方法结合在一起的杂合遗传算法,用于求解工艺路线可变的JobShop调度问题。通过对某双极型集成电路封装企业的JobShop调度仿真,结果表明算法是有效和可行的。     

组织职业生涯管理与工作卷入关系的研究

本研究以龙立荣开发的组织职业生涯管理问卷的简缩版和修订过的Kanungo的工作卷入问卷为测量工具,对多家企业的员工进行了调查。统计分析结果显示:组织职业生涯管理与员工的工作卷入之间存在显著的正相关关系,组织职业生涯管理中的各个维度与员工工作卷入的相关关系均达到了显著性水平,其中与员工工作卷入相关性最大的是“晋升公平”,相关性最小的是“注重培训”。此研究证明了组织职业生涯管理的必要性。     

刘澜波对东北军走上抗日道路的历史贡献

九一八事变后,刘澜波便与东北军结下了不解之缘。他帮助东北军爱国将领黄显声组建东北抗日义勇军,在白山黑水之间展开同日军的武装斗争。东北军入关后,他受党组织委派,长期在东北军中秘密开展党的统战工作,促使东北军走上联共抗日的道路。在全面抗战爆发后,刘澜波在周恩来的直接领导下,领导东北救亡总会继续关注与支持东北军抗战,使东北军成为全国抗日战场的重要组成部分,有效地配合了全国抗战。     

教师工作满意度及其社会心理机制研究

文章讨论了工作度、教师工作满意度的涵义,指出了其影响因素,并运用态度理论阐述了工作度的社会心理机制,最终指出:进行感情投资,满足教师需要;关心体谅教师,开创开放性组织氛围;提升教师价值观与态度;完善知识结构,增强竞争意识四点对策探折。     

The recovery paradox: Portraying the complex interplay between job stressors,lack of recovery,and poor well-being

Job stressors such as time pressure, organizational constraints, and interpersonal conflicts matter for individual well-being within organizations, both at the day level and over longer periods of time. Recovery-enhancing processes such as psychological detachment from work during nonwork time, physical exercise, and sleep have the potential to protect well-being. Although the experience of job stressors calls for effective recovery processes, empirical research shows that recovery processes actually are impaired when job stressors are high (recovery paradox). This article presents explanations for the recovery paradox, discusses moderating factors, and suggests avenues for future research.