The impact of culture on best-practice production/operations management

Significant work has been completed in arriving at what have been put forward as `best practices' for a variety of facets of production/operations management (POM). Organizations are becoming global in their operations. In this environment, there is a desire to learn from this 'proven' best practice and to use the generic ideas, concepts and techniques 'world-wide'. However, it is becoming apparent from a range of fragmented evidence that 'best practices' developed and successful in one context are not necessarily directly transferable to a comparable alternative. More detailed examination suggests that national culture has a significant role to play in determining the precise nature of a best practice in POM, and how universal it might be in its application. This paper examines structures within which to view facets of POM in order to identify one that will facilitate exploration of cultural issues. There follows an identification of what might be considered to be an appropriate range of cultural dimensions along which POM best practices may be considered. A review of the evidence from the literature of cultural impacts on aspects of POM is presented. This is used to support the development of a generic framework to examine this interface more comprehensively.     

Generating Probabilistic Spatially-Explicit Individual and Population Exposure Estimates for Ecological Risk Assessments

Exposure to chemical contaminants in various media must be estimated when performing ecological risk assessments. Exposure estimates are often based on the 95th-percentile upper confidence limit on the mean concentration of all samples, calculated without regard to critical ecological and spatial information about the relative relationship of receptors, their habitats, and contaminants. This practice produces exposure estimates that are potentially unrepresentative of the ecology of the receptor. This article proposes a habitat area and quality-conditioned exposure estimator, E[HQ], that requires consideration of these relationships. It describes a spatially explicit ecological exposure model to facilitate calculation of E[HQ]. The model provides (1) a flexible platform for investigating the effect of changes in habitat area, habitat quality, foraging area, and population size on exposure estimates, and (2) a tool for calculating E[HQ] for use in actual risk assessments. The inner loop of a Visual Basic program randomly walks a receptor over a multicelled landscape--each cell of which contains values for cell area, habitat area, habitat quality, and concentration--accumulating an exposure estimate until the total area foraged is less than or equal to a given foraging area. An outer loop then steps through foraging areas of increasing size. This program is iterated by Monte Carlo software, with the number of iterations representing the population size. Results indicate that (1) any single estimator may over- or underestimate exposure, depending on foraging strategy and spatial relationships of habitat and contamination, and (2) changes in exposure estimates in response to changes in foraging and habitat area are not linear.     

Child survival,poverty, and labor in Africa

Children in Africa face harsh risks and are often subjected to hostile environments that severely limit their emotional, mental, physical, and social growth and development. That, in turn, significantly limits their prospects for childhood survival, increases their chances of having to enter into employment voluntarily or forcibly, and makes them susceptible to poverty. This paper examines and analyzes the plight of Africa's children in the context of the risks they face with respect to their mortality, their socio-economic security, and their engagement in economic activities. The trends and contributory factors are discussed and an analytical assessment is offered with policy implications for mitigating the consequences of child mortality, poverty, and labor on the African continent.     

Migration,Small Farming and Food Security in the Caribbean: Jamaica and St. Vincent and the Grenadines

Long‐term and short‐term (seasonal) migrations from Caribbean countries have been strategies for enhancing the livelihoods and assets of individuals and families for many decades. The greatest challenges to food security are felt by the populations below the poverty level, most of whom are rural dwellers. Taking two Caribbean countries – Jamaica, and St. Vincent and the Grenadines, this article assesses whether in rural, characteristically small‐farming areas, the financial and social remittances resulting from migration are used to improve food security, through either supporting agricultural production or providing money to purchase food. The findings show the contrast between Jamaica and St. Vincent. Whereas migration generally benefits small‐scale farming and domestic food production, increasing food accessibility in Jamaica, migration has been variously used by the rural poor in St. Vincent to replace farming. Food security in St. Vincent is heavily dependent on purchasing food and, in this regard, migrant remittances play an important role.     

THE RELATIONSHIPS AMONG ADOLESCENT PREGNANCY, PREGNANCY RESOLUTION, AND JUVENILE DELINQUENCY

We apply criminological theories of social control to explore the relationships among adolescent pregnancy, pregnancy resolution, and juvenile delinquency. While most ever-pregnant girls have especially high rates of delinquent behavior, adolescent mothers exhibit delinquency levels no higher than those of their never-pregnant peers. Unlike adolescent females who end their pregnancies through abortion, those who keep their babies experience a dramatic reduction in both smoking and marijuana use. Our results suggest that among adolescent girls, the birth of a child has a strong trajectory-modifying effect. It serves as a mechanisms of social control and substantially reduces the likelihood of delinquent behavior.