The use of formal inventory control models: A preliminary survey

Of the many papers and texts on the subject of inventory control, relatively few report the successful implementation of systems based on formal mathematical models developed with specific objectives in mind. This could be considered rather strange in the light of the relatively high number of papers reporting the development of models for dealing with a multitude of different hypothetical situations, and the widespread availability of computer systems capable of exploiting such models. Various reasons for this anomaly can be put forward. This paper reports the results of a preliminary survey designed to investigate this more deeply, and draws some necessarily tentative conclusions relating to factors contributing to the successful application of such systems.     

The effects of seasonal demand on depot location

Many of the cost functions associated with depot location algorithms assume an overall demand for a fixed period, usually one year. This paper describes an investigation into the effect of high seasonality within such demand figures on the optimal location of storage facilities. The preliminary results indicate that a more flexible approach for certain products could be worthwhile.     

Rural Environmental Concern: Effects of Position,Partisanship, and Place

The social bases of environmental concern in rural America resemble those for the nation as a whole, but also reflect the influence of place. Some general place characteristics, such as rates of population growth or resource‐industry employment, predict responses across a number of environmental issues. Other unique or distinctive aspects of local society and environment matter as well. We extend earlier work on both kinds of place effects, first by analyzing survey data from northeast Oregon. Results emphasize that “environmental concern” has several dimensions. Second, we contextualize the Oregon results using surveys from other regions. Analysis of an integrated dataset (up to 12,000 interviews in 38 U.S. counties) shows effects from respondent characteristics and political views, and from county rates of population growth and resource‐based employment. There also are significant place‐to‐place variations that are not explained by variables in the models. To understand some of these we return to the local scale. In northeast Oregon, residents describe how perceptions of fire danger from unmanaged forest lands shape their response to the word conservation. Their local interpretation contrasts with more general and urban connotations of this term, underlining the importance of place for understanding rural environmental concern.     

The Mediating Role of Secular Coping Strategies in the Relationship Between Religious Appraisals and Adjustment to Chronic Pain: The Middle Road to Damascus

Despite an outgrowth in research examining associations between religiosity and health outcomes, there has been a lack of empirical focus on the relationship between religiosity and adjustment to chronic pain. This study investigated specific secular coping strategies that mediate the proposed relationship between religious appraisals and pain-related outcomes. Twenty-nine chronic pain patients completed measures assessing pain-related coping strategies, pain severity, disability, depression, positive and negative affect, trait anger and three types of religious appraisals- benevolent God appraisals, punishing God appraisals, and demonic appraisals. A significant positive relationship was found between punishing God appraisals and depression, with catastrophizing mediating this relationship. Demonic appraisals were significantly related to disability. Benevolent religious appraisals were related to positive affect. Benevolent religious appraisals were significantly related to the secular coping strategies of diverting attention, ignoring pain sensations, reinterpreting pain sensations and using coping self-statements, but these coping strategies did not mediate the relationship between benevolent religious appraisals and positive affect. While this study provides no evidence that religious appraisals influence pain perception, data suggest that both positive and negative religious appraisals are related to mental health outcomes in a chronic pain population.     

The effects of food and density of the movement ofArion ater andAriolimax columbianus (Pulmonata: Stylommatophora) between habitats

Summary Experiments were conducted to determine if slug density, or food quantity and quality could cause dispersal by slugs.Arion ater dispersed quickly from overcrowded areas, where high mortality was incurred by this species. Poor food conditions, caused more dispersal than good food conditions, but food had no effect on the mortality ofA. ater. Neither food nor density factors had significant effects on the dispersal ofAriolimax columbianus. However, moreA. columbianus died in the high- than low-density treatments.A. columbianus mortality was unaffected by the food factor. DispersingArion were heavier than non-dispersers, but there was no difference between the weights of dispersing and non-dispersingAriolimax. There were significant seasonal changes in the dispersal rate, mortality and weight of dispersingArion, whereas only the mortality ofAriolimax changed significantly during the experiments. SinceArion ater did not markedly reduce its activity during unsuitable weather it was able to leave areas of poor food and high slug density fairly rapidly.Ariolimax columbianus' large size allowed it to remain inactive during unfavourable weather and permitted this species to be relatively unresponsive to the experimental treatments.     

Competition and Wage Discrimination: The Effects of Interindustry Concentration and Import Penetration*

Objective. Economic theory suggests that competition reduces employers' latitude to engage in wage discrimination ( Becker, 1957 ). This study investigates the impact of foreign and domestic competition on wage discrimination. Method. Utilizing the sample of males in U.S. manufacturing industries from the 1990 Public Use Micro Sample (PUMS), industry wage equations are estimated. In a second stage, the impact of domestic and foreign competition on racial wage disparity is assessed. Results. We find little evidence to support our hypothesis. Conclusions. Notwithstanding, the failure of conventional economic theory to satisfactorily explain racial wage disparity reiterates the need to incorporate alternative theories of discrimination into mainstream economic theory.     

Aboriginal Drinking: A Case Study in Inequality and Disadvantage

This paper examines an aspect of social inequality experienced by Aboriginal people living in a remote Queensland mining town. We contend that non-Aboriginal perceptions and attitudes of Aboriginal drinking behaviour contribute directly to structural inequalities within the Mount Isa community. Social drinking in the township is, for reserve-dwelling Aborigines, restricted mainly to one bar in one hotel and adjoining park and river bank area. The restrictions are preserved through both overt and covert discrimination. Aboriginal inebriation and excessive drinking are therefore more visible to the wider community and more accessible to police prosecution than that of any other ethnic group in the town. Although White folk tales concerning Aboriginal drinking often contain fear about acts of violence and crime directed towards the White community, soundly documented incidents are rare. This paper argues that the persistence of such attitudes is at the heart of a symbolic differential between the White and Black community in Queensland. Moreover, problems within the Aboriginal community that can be directly related to the excessive consumption of alcohol must also be seen as a product of these White reactions and perceptions.     

“Neutrality” and “card check” agreements: Union assaults on employee rights and the integrity of the national labor relations board

Employer “neutrality” and union recognition by “card check” are tools unions use to bolster their shrinking numbers. Employee freeinformed choice and the sanctity of a democratic, secretballot National Labor Relations Board (NLRB) election are the casualties of this fast-track approach to organizing. The NLRB is faced with challenging issues about some of the agreements which may overreach legal boundaries. This paper addresses those issues and highlights pending NLRB cases which may resolve some of them.     

Rent seeking and the North-South terms of trade

In this paper results are reported for a series of counterfactual experiments with an eight- region numerical general equilibrium model of world trade, production, and welfare. In these analyses trade restrictions in the developing world are modeled as quantity constrained import licensing, which generates competitive rent-seeking behavior. Model experiments concentrate on the implications of differential factor endowment growth for the North-South terms of trade, and the effects of alternative trade policy changes in developing countries.