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21.
We consider a large original equipment manufacturer (OEM) who relies on a contract manufacturer (CM) to produce her product. In addition to the OEM's product, the CM also produces for a smaller OEM. Both the larger OEM and the CM can purchase the component from the supplier, but their purchase prices may differ and remain unknown to each other. The main question we address is whether the larger OEM should retain component procurement by purchasing components from the supplier and reselling to the CM (buy–sell), or outsource component procurement by letting the CM purchase directly from the supplier (turnkey). We show that, under buy–sell, the larger OEM's optimal strategy is to resell components at the highest possible component purchase price of the CM (i.e., the street price). By comparing buy–sell and turnkey, we find that a CM with low component price is better off under turnkey, even though under buy–sell he receives more profits through the products sold to the smaller OEM. Furthermore, the larger OEM's preference between buy–sell and turnkey depends on her component price, the volatility of the CM's component price and substitutability between the two products.  相似文献   
22.
The author discusses the limitations of statistical forecasting as a guide to managerial planning, with specific reference to technological and market changes in the glass industry. He advocates the use of a Forecast Adjustment Matrix as a framework for identifying marketing and technological factors which might produce significant deviations from established trends. Finally, he suggests that the analysis and adjustment of technological and market trends should be made periodically. The whole technological forecasting operation should be formalized and it should be made the specific responsibility of one organizational unit within the company.  相似文献   
23.
K Roscoe Davis 《Omega》1974,2(4):515-522
A firm's success, within a rapidly growing and dynamic market, depends upon its ability to respond to market demand and to react to competitive forces. A key factor determining success is the pricing policy employed by the firm. Product pricing, however, is not simple; supply and demand, as well as the interaction and reaction of competitors, must be taken into consideration. By simulating a competitive market environment, however, a firm should be able to evaluate different pricing strategies prior to employing a strategy in practice. The goal of this research was to propose a simulation model to serve this purpose. Particularly, the objective was to demonstrate that if an industry can be characterized as one in which cost as well as price decline with cumulative volume, a pricing policy leading to market dominance exists. A simulation model is desirable for evaluating the proper pricing strategy for achieving such a market position.  相似文献   
24.
A central sociological problem is the extent to which genetics and the environment influence human behavior. Studies of twins are a core method in attempts to disentangle and to determine the comparative strength of genetic and environmental influences on psychosocial outcomes. A critical assumption of twin studies is that both monozygotic "identical" twins and dizygotic "fraternal" twins share common social environments. Therefore, any greater similarity of monozygotic than dizygotic twins is attributed to genetic influences. This paper tests the equal environment assumption by examining the extent to which greater concordance of adolescent monozygotic compared to dizygotic twins results from social, as well as genetic, influences. Bivariate comparisons indicate that monozygotic twins show greater similarity than dizygotic twins in socially-based characteristics including physical attractiveness, time spent in each other's company, the overlap in friendship networks, and friends' use of alcohol. Multivariate analyses indicate that measures of the social environment sometimes reduce or eliminate apparent genetic effects. In comparison with genetic indicators, social variables are usually stronger predictors of depression and alcohol use and abuse. These findings suggest that past twin studies could overstate the strength of genetic influences because some similarities in behavior among monozygotic compared to dizygotic twins stem from social influences.  相似文献   
25.
This study examined the impact of adjunctive multi-family psychoeducation groups (MFPG) on mood-disordered children aged 8 to 11 and their families. Participants were 35 children and 47 parents from families randomly assigned to either immediate MFPG plus treatment as usual (n = 18) or a 6-month wait-list condition plus treatment as usual (n = 17). At the 6 month follow up, immediate treatment families reported: Increased parental knowledge about childhood mood symptoms; increased positive family interactions as reported by the parent; increased perceptions of parental support as reported by children; and increased utilization of appropriate services by families. Expected impact on decreasing negative family interactions was not found. Results are largely consistent with hypothesized findings and support the need to further investigate the adjunctive role of psychoeducation in the treatment of childhood mood disorders.  相似文献   
26.
Respondents concerns about privacy can decrease reporting of HIV and STD risk behaviors in general population telephone surveys. The purpose of this paper is to describe the results of an experimental study evaluating whether one method for increasing privacy, touch-tone data entry (TTDE), is effective in increasing estimates of sexual behaviors from a population-based survey. We conducted a random-digit-dial telephone survey of adults in New Jersey (n = 405), with half the respondents using TTDE for answering sexual behavior questions. TTDE led to increased reports of same-sex sexual behavior, certain HIV and STD risk factors, and concern about one s risk for HIV and STD transmission. TTDE also narrowed the difference between men s and women s reports of the number of different sexual partners over the past 10 years. The feasibility and limitations of TTDE are discussed, as well as possible alternative interpretations that consider the impact of TTDE on the dynamics of the interaction between the respondent and the interviewer.  相似文献   
27.
The purpose of this study was to refine and elaborate models of personality and relationship-specific characteristics in the perpetration of stalking and psychological abuse. Three hundred and forty-two college students who had been in intimate relationships completed a series of questionnaires about their most recent breakup and their former relationship. Our hypotheses were supported, with harsh parental discipline, anxious attachment, and need for control of one's partner forming a common cluster in the prediction of stalking and psychological abuse. For psychological abuse, relationship dissatisfaction added to the predictive factors; whereas for stalking, the level of anger-jealousy over the breakup was the major added factor. Degree of anger-jealousy was influenced by being the recipient of a breakup and the level of passion.  相似文献   
28.
A substantial share of the low-income older tenants who occupy U. S. government-subsidized rental housing has physical and cognitive limitations. These older tenants are often women living alone in their 70s and 80s, who need help obtaining community-based services, demand-responsive transportation, help with apartment housekeeping and maintenance, self-care assistance, and design modifications made to their dwellings. Other low-income and frail older persons who have large housing expense burdens or occupy physically deficient dwellings also need affordable rental housing with these supportive services. The unmet supportive service needs of these groups persist even as this country's major political and professional stakeholders are aware of their problems and have solutions. This paper examines five major political and organizational barriers that have restricted the availability of supportive services in affordable rental developments. It offers 12 policy recommendations.  相似文献   
29.
30.
Old and thin     
Davis DS 《Second opinion (Park Ridge, Ill.)》1990,(15):26-32; discussion 34-9
Viewing an elderly patient's refusal of food from the perspective of the jain tradition of sallekhana (voluntary starvation) permits the author to reconcile her need to "do something" with her belief in the principle of patient autonomy.  相似文献   
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