Order Promising and the Master Production Schedule*

Previous research on material requirements planning (MRP) systems has rarely considered the impact of the master production scheduling method used to promise customer orders and to allocate production capacity. Based on a simulation study of an MRP environment, we show that the correct selection of a master production schedule (MPS) method depends on the variance of end-item demand. In addition, we find evidence that the effectiveness of a particular MPS method can be enhanced by holding buffer inventory at the same level in the product structure as in the MPS.     

Manufacturing ghost fathers: the paradox of father presence and absence in child welfare

Fathers exist in the lives of women and children involved with child welfare authorities, and yet, they are rarely seen by child welfare. This invisibility exists whether or not fathers are deemed as risks or as assets to their families. Using an analysis of fundamental child welfare policies and practices and relevant literature, the paper examines how 'ghost' fathers are manufactured, and how this phenomenon affects families and professionals in child welfare. An analysis of gender, class, race and culture of child welfare discourses shows how these fathers are seen as deviant, dangerous, irresponsible and irrelevant, and even further, how absence in child welfare is inextricably linked to blaming mothers. In failing to work with fathers, child welfare ignores potential risks and assets for both mothers and children.     

Worthy of Discussion: Collaborative Group Therapy

In this paper the development of a new approach to group therapy is presented. Collaborative group therapy has been successfully used in working with people with schizophrenia. It has provided both participants and therapists with the opportunity to move away from a restrictive view of mental illness toward alternative self knowledge and empowerment. New ethnographic methodology has been used to measure both process and outcome of the group therapy.     

Generic Strategies and Business Performance: an Empirical Study of the Screw Machine Products Industry

Select businesses in industry may attempt to compete through distinct strategies. But some may be successful in adopting distinct strategic profiles while others may not prove successful. In this study it was expected that six different groups of businesses might be present in the empirical exploration – those competing successfully with the low cost strategy and those competing unsuccessfully with this strategy; those competing successfully with the differentiation strategy and those competing unsuccessfully with this strategy; and those competing successfully with low cost and differentiation strategies and those competing unsuccessfully with these strategies. The results of the investigation portray the presence of three strategic profiles. They are unsuccessful low cost businesses with the lowest performance, unsuccessful differentiated businesses with the second lowest performance, and successful businesses with combination strategies with the highest performance.     

Stress and Unemployment: A Comparative Review and Research Model of Female and Male Managers

This paper presents a multifaceted approach to unemployment stress experienced by male and female managers, in the form of a literature review and comparative research model. In order to develop a working model which can be applied to both male and female managers, the paper covers a substantial range of the literature pertaining to the processes and effects of unemployment for managers. Previous studies often provide conflicting data which generally results from differential approaches taken to the study of unemployment. In addition, it is important to note that the majority of studies focus on blue-collar male workers and that the vast majority are based on a male model of work. The proposed model highlights sources of stress, moderators of stress and stress outcomes that may affect unemployed managers, and distinguishes areas in which gender differences are likely to be found. However, these differences are only hypothesized from the current literature and require in-depth research if they are to be fully understood.     

Examination of variable errors of measurement in a survey-based social indicator

The sample survey, involving the use of specially developed questionnaires and instruments, is an important source of data regarding individual experiences and social-psychological characteristics for use in social indicator research. Variable errors of measurement are often given only cursory attention in presentations of survey sampling and social indicator theory and in the analysis of such data. These errors may, however, result in reduced precision of estimates and may affect statistical inferences drawn from the data. Some procedures for assessing the extent of variable measurement error are described and examples of their use in evaluating a survey instrument and data collected are discussed.     

Attitudes Toward Inheritance Following Divorce and Remarriage

The purpose of this study is to examine attitudes regarding who should be included in wills following divorce and remarriage. Respondents were 268 men and 439 women. In mailed vignettes, they indicated whom they thought should be included in an elder's will. Three variables were examined: (a) family closeness, (b) contact after divorce, and (c) remarriage. Three factors were associated with inheritance obligations: (a) genetic ties, (b) patriarchal lineage, and (c) family ties, which were defined more broadly than genetic relationships. Few respondents mentioned factors such as family closeness and reciprocity. There was little agreement regarding who is and who is not in the family, but inheritance clearly was limited to family. Obligation to include the next of kin in the will supersedes obligations based upon closeness and frequency of contact.     

Physiological Regulation at 9 Months of Age in Infants Prenatally Exposed to Cigarettes

The primary purpose of this study was to examine the association between prenatal cigarette exposure and physiological regulation at 9 months of age. Specifically, we explored the possibility that any association between prenatal cigarette exposure and infant physiological regulation was moderated by postnatal environmental tobacco smoke (ETS) exposure or infant gender. We evaluated whether male infants with prenatal cigarette exposure or infants who were also exposed to ETS after birth had the highest levels of physiological dysregulation. Respiratory sinus arrhythmia (RSA) was obtained from 206 (142 exposed and 64 nonexposed) infants during a baseline period and during procedures designed to elicit both positive and negative affect. There was a significant suppression of RSA during the negative affect task for nonexposed infants, but not for exposed infants. Postnatal ETS exposure did not moderate this association; however, gender did moderate this association such that boys with prenatal cigarette exposure had a significant increase in RSA rather than the suppression seen among both nonexposed boys and girls. These results provide additional support for the idea that boys are particularly vulnerable to the effects of prenatal cigarette exposure.