Contractor Accreditation: A Probabilistic Model

The selection of competent contractors is a critical function in all business organizations. In contrast to other types of vendors (e.g., distributors, manufacturers, etc.), contractors are typically accredited before any business transaction takes place. In such situations, there is often a considerable amount of uncertainty associated with the accreditation process. This research presents a probabilistic model for accrediting contractors. We discuss a methodology in which probability measures are used to capture the uncertainty inherent in the decision process. These probabilities are estimated from data on (i) past applicants and (ii) their eventual performance, if accredited. Furthermore, these probabilities are used to determine when additional information about an applicant should be collected, as well as what kind of information would be most relevant for the vendor under consideration.     

Presenting Geographic Information: Effects of Data Aggregation,Dispersion, and Users' Spatial Orientation

Geographic information systems (GIS) have taken on an increasingly important role supporting decision making in many organizations. GIS have been used to support a breadth of tasks including oil and mineral exploration, facility location, logistics support, and facilities management decisions. The effectiveness of GIS as a decision support tool comes primarily from the visual display of data in the form of maps. When presenting information as a geographic map, the level of data aggregation potentially affects aspects of task complexity such as information load and the potential for pattern recognition by the user. Other task attributes expected to be related to data aggregation effects include problem size, the degree of data dispersion, and users' spatial orientation skills. We conducted an experiment to study these effects and their interactions. Subjects used a GIS including map-based information characterized by different levels of problem size, data dispersion, and data aggregation. Spatial orientation skill was examined as a covariate in the experimental treatments. The results indicate that all of these geographic information characteristics have significant impacts on decision performance. Moreover, many interactions are present among the factors. We evaluate these interactions in order to derive implications for practice and for future research.     

Role clarity, work overload and organizational support: multilevel evidence of the importance of support

The present study extended the demands-control-support model used in occupational stress research in two ways. First, it hypothesized that role clarity (i.e. role ambiguity), like control, would moderate the relationship between demands and psychological strain. Second, the study assessed support (from leaders) as a macro characteristic of the work-group environment. Data were drawn from a large study of US army soldiers, the study sample consisting of 1786 lower enlisted male soldiers. The inclusion of support as a work-group characteristic lead to a multilevel test of the model. A three-way multilevel interaction among work demands, role clarity and support was observed. As predicted, the relationship between demands and psychological strain was moderated by role clarity; however, this moderating relationship was found only when work-group support was high.     

A Decision Support System for Production/ Distribution Planning in Continuous Manufacturing

This paper presents a decision support system (DSS) for managing production/distribution planning in a continuous manufacturing environment. The vendor has multiple plants and distribution centers (DCs). The trading partners have widely varying independent demand patterns. The DSS is designed for use in a multiproduct environment with overlapping raw materials and processing requirements. The production and distribution lead times at plants may span multiple planning periods. The impact of any manual override of a suggested solution can also be evaluated. The DSS is based on a linear programming model with a rolling horizon and was originally designed for a large process industry. Results of a pilot implementation using actual data are also presented, which show potential for significant savings for the company.     

非政府组织与农民工社会支持——基于青岛、深圳、东莞的调查

本文通过问卷调查和个案访谈发现,在有非政府组织的地区,农民工的社会支持水平要比没有非政府组织地区的农民工高,这种差异尤其表现在客观支持和主观支持两个方面。     

The FAIRSERV Model: Consumer Reactions to Services Based on a Multidimensional Evaluation of Service Fairness

The current dominant conceptualization of consumer reactions to services is the SERVQUAL model. This article proposes the FAIRSERV model as an alternative or additional conceptualization of consumer reactions to services. FAIRSERV involves seeing service evaluation through the lens of organizational fairness (justice) theory applied to the relationship between the service consumer and the service provider. FAIRSERV is premised on the claim that, especially in relational service contexts, consumers are interested in service fairness as well as service quality (service favorableness) as represented by SERVQUAL. Service fairness or justice is a multidimensional construct based on equity theory. In this article, the FAIRSERV model is tested with the SERVQUAL model in the context of information system services. The two models are used to predict service satisfaction and repatronage intention. The FAIRSERV model appears to add a significant new set of predictors of service satisfaction and repatronage intention that should be considered in the future by service providers.     

老龄化、老年家庭消费与补偿消费行为

基于中国健康与养老追踪调查（CHARLS）2011年基线调查以及2013年和2015年追踪调查数据,本文使用因子分析和非随机断点回归设计等方法,以家庭为分析的基本单位,从补偿性消费行为理论的视角探究老龄化背景下老年家庭消费需求及其结构变动。研究发现：①老年家庭的补偿性消费需求随年龄增长而缓慢上升,但这个过程并不是连续的,而是在63岁和71岁两个年龄节点处存在显著跳跃,与政策节点相比略有延迟;②63岁断点处向上跳跃的幅度为5~7个百分点,跳跃幅度较小,而71岁断点处向上跳跃的幅度大约为20%。仿照联合国的年龄划分标准,可将63岁作为我国老年人进入年轻老年的年龄节点,71岁作为进入老年阶段的年龄节点;③不同断点处支撑老年家庭补偿性消费需求结构变动的影响因子并不相同。驱动63岁年龄节点跃动最显著的影响因子是教育培训,这可能是为了延迟补偿年轻时的教育缺憾,或再次进入劳动力市场,但也不能排除对孙辈的教育负担;驱动71岁年龄节点跃动最显著的影响因子是医疗保健、文化娱乐和交通通讯,旅游支出减少可能是经济或身体方面的原因,也可能是因为国家为满70周岁的老年人出游提供了各种优惠和减免政策。     

Informal Caregiving and the Politics of Policy Drift in the United States

Informal caregivers play an increasingly important role in caring for aging Americans. Yet existing social policies that could support informal caregiving have experienced “policy drift,” a failure to adapt to social risks that develop after policies are initially enacted. This article examines policy makers’ success at updating seven major policies to address caregiver needs. It draws on an original data set of legislation in this area introduced between 1991 and 2006 (n = 96). Findings indicate that drift is more likely when policy updates are costly, lack support from members of majority parties in the House and Senate, and fail to generate bipartisan support.     

The predictive role of support in the birth experience: A longitudinal cohort study

Background

Several risk factors for negative birth experience have been identified, but little is known regarding the influence of social and midwifery support on the birth experience over time.

老年人与子女同住 对老年健康的影响分析

随着我国老龄化程度的持续加深和疾病谱的转变,当前社会存在大量老年照料需求,尽管国家和社会在积极构建养老服务体系,但短期内与子女同住的家庭养老模式仍将发挥重要作用。与子女同住会对老年健康产生一定的影响,这种影响对于不同健康程度的老年人也存在差异。本文基于南加州大学经济与社会研究中心提供的Harmonized CHARLS 2013-2015年追踪数据,选取我国60岁及以上老年群体为研究对象,以虚弱指数表征健康结果,采用OLS回归和分位数回归的方法探讨与子女同住的居住模式对老年健康的影响及这一影响对不同虚弱程度的老年人是否匀质,通过滞后模型设计和倾向值匹配法控制可能存在的内生性问题。研究发现居住模式与虚弱指数存在显著的正向关系,表明居住模式会影响老年健康水平;与子女同住对老年人健康存在负面效应,而在父母附近分而不离的居住模式相较于与子女同住而言对老年人的健康更为有利;与子女同住对老年健康的这种负向影响对于不同虚弱程度的老年人而言是非线性、非匀质的,大致呈先增后降的倒U形分布,表明不同健康状况的老年人对子女的照料需求是不同的,这种影响在不同性别、城乡和年龄段的老年群体间各有差异。这就为与子女同住的居住模式提供了一些警示,与子女同住不能改变老年健康衰减的趋势,应尽量减少或规避可能增加老年人晚年健康负担的风险性因素,让"家"真正成为老年人安享晚年的港湾。