家政女工生存状态及社工介入方式研究——基于社会支持理论

本文在调查研究的基础上,对昆明市家政女工的生存状态进行了描述和分析。针对家政女工所面对的困难和问题,拟从社会支持理论中寻求理论依据,并通过社会工作的手段进行介入,以期找到一种解决问题的途径和方式。     

On the Specification of Propensity Scores,With Applications to the Analysis of Trade Policies

A vector autoregression is fit to recent U.S. data on wheat prices, wheat export sales, wheat export shipments, and exchange rates. Forecast error decompositions and out-of-sample forecasts indicate that exchange rates have little influence on wheat sales and shipments.     

The Family Group Within the Nursing Home:

An ongoing monthly family group was implemented in an intermediate care facility in hopes of improving communication between staff and families of long term care residents. Other objectives of the group were to provide families with information about policies and procedures, education about the aging process, and to facilitate an informal support group network where families could share problems and concerns. The feedback and evaluation process indicated that sharing feelings of anger, quiet, frustration and other emotions helped the families deal with the responsibilities of institutionalizing a relative and helped to facilitate better communication between staff and family members.     

Impact of investing in quality improvement on (Q,r, L) model involving the imperfect production process

This paper investigates the impact of quality improvement on the modified lot size reorder point models involving variable lead time and partial backorders. The formulated models include the imperfect production process and an investing option of improving the process quality. The objective is simultaneously optimizing the lot size, reorder point, process quality level and lead time. We first assume that the lead time demand follows a normal distribution, then relax this assumption to consider the distribution-free case where only the mean and standard deviation of lead time demand are known. An algorithm procedure of finding the optimal solution is developed, and two numerical examples are given to illustrate the results.     

The impact of random machine unavailability on inventory policies in a continuous improvement environment

There are production situations where a production facility (e.g. a machine) is used intermittently to produce lot sizes of certain products. Upon completion of production run, the facility may not be available for a random amount of time due to several reasons, such as: the facility needs to be maintained and the maintenance time is random due to unforeseen circumstances; or that the facility is leased by different manufacturers and the demand for the facility is random. As a result of machine unavailability, stock-out situations might arise. This paper extends the work of Abboud et al . (2000, Computers and Operations Research , 27 , 335-351) by assuming learning and forgetting in production. A new mathematical model is developed with numerical examples and sensitivity analysis provided. Furthermore, this paper determines how the overall inventory cost is influenced by the nature of the random variable that represents the unavailability time of the production facility.     

经济效益综合评价中的简单方法──序时多属性决策方法

本文对序时多属性决策方法进行了研究,针对工业经济效益的综合评价,提出了二个简单的方法,它以简单加权法(SAW)的基础,能够自动确定各评价目标间的加权系数,对决策方案和评价目标没有任何数量要求和限制,决策结果不具有主观随意性,运用该方法对全国部分省市经济效益进行综合评价的结果表明；它与运用非序时多属性决策方法计算的结果基本一致,而后者的计算量大大多于前者。     

Experiment-dependent priors in psychology and physics

Sometimes conducting an experiment to ascertain the state of a system changes the state of the system being measured. Kahneman & Tversky modelled this effect with support theory. Quantum physics models this effect with probability amplitude mechanics. As this paper shows, probability amplitude mechanics is similar to support theory. Additionally, Viscusi's proposed generalized expected utility model has an analogy in quantum mechanics.     

Semi-online scheduling with “end of sequence” information

We study a variant of classical scheduling, which is called scheduling with “end of sequence” information. It is known in advance that the last job has the longest processing time. Moreover, the last job is marked, and thus it is known for every new job whether it is the final job of the sequence. We explore this model on two uniformly related machines, that is, two machines with possibly different speeds. Two objectives are considered, maximizing the minimum completion time and minimizing the maximum completion time (makespan). Let s be the speed ratio between the two machines, we consider the competitive ratios which are possible to achieve for the two problems as functions of s. We present algorithms for different values of s and lower bounds on the competitive ratio. The proposed algorithms are best possible for a wide range of values of s. For the overall competitive ratio, we show tight bounds of ϕ + 1 ≈ 2.618 for the first problem, and upper and lower bounds of 1.5 and 1.46557 for the second problem. The authors would like to dedicate this paper to the memory of our colleague and friend Yong He who passed away in August 2005 after struggling with illness. D. Ye: Research was supported in part by NSFC (10601048).     

Are they lonely at the top? Social relationships and social support among Australian managers

This research tested the possibility that managers may be lonely at the top. A total of 572 Australian managers responded to a questionnaire-based survey. Results showed that social support was more frequently available from non-work relationships than from work relationships. The support available from work and non-work sources was also qualitatively different. Workplace relationships offered mainly distraction, whereas non-work sources also offered care, acceptance, and consolation. Within the workplace, co-workers were the primary source of support. Moreover, support for work stressors was received from within the workplace, or from a spouse or partner. However, support was seldom received from within the workplace for non-work stressors. Concerns about social relationships also contributed to most of the nominated stressful situations.     

Validation of the Career‐Related Parent Support Scale Among Chinese High School Students

The Career‐Related Parent Support Scale (CRPSS; Turner, Alliman‐Brissett, Lapan, Udipi, & Ergun, 2003 ) was translated and modified to form the 24‐item Chinese version of the scale. As in the case of the original CRPSS, the Chinese version includes 4 subscales (Instrumental Assistance, Emotional Support, Verbal Encouragement, and Career‐Related Modeling). The Chinese version of the CRPSS was validated in this study with a sample of Hong Kong high school students (N= 677). Reliability analyses showed that the total scale and subscales were internally consistent. The results of the exploratory factor analysis and confirmatory factor analysis suggested that the Chinese version of the CRPSS provided adequate indicators of Chinese adolescents’ perceptions of parent support for their career aspirations.