Inventory Policy with Parametric Demand: Operational Statistics,Linear Correction,and Regression

In this paper, we consider data‐driven approaches to the problem of inventory control. We first consider the approach of operational statistics and review related results which enable us to maximize a priori expected profit uniformly over all parameter values, when the demand distribution is known up to the location and scale parameters. For the case of the unknown shape parameter, we first suggest a heuristic approach based on operational statistics to obtain improved ordering policies and illustrate the same for the case of a Pareto demand distribution. In more general cases where the heuristic is not applicable, we suggest linear correction and support vector regression approaches to better estimate ordering policies, and illustrate these using a Gamma demand distribution. In certain cases, our proposed approaches are found to yield significant improvements.     

From the Editor: Why Do People Do What They Do?

Sociological Forum -     

Current social work perspectives on clinical practice

Several forms of progress in the development of clinical practice theory and method are identified. There is a renewed positive valuation of psychodynamic approaches, a general acceptance of a systems framework, and a greater operationalization of procedures. The current controversy between the social work scientists and artists concerning research strategies is discussed. Three promising new perspectives—of morality, spirituality, and hermeneutics-are briefly interpreted.     

Family Therapy … What's in a Name?

In the search for therapeutic efficacy, we vacillate from ‘certitude’ to ‘certitude’, repetitively embracing and then discarding the objects of our intellectual passion(!). The following juxtaposition of images and sounds is intended to suggest that ‘wisdom’ and ‘truth’ may derive from a more judicious and multi-layered integration of enquiry and fidelity. The idea of narrative implies not only a story but also a range of possible relationships between narrator and listener, and raises for examination the qualities of both parties. A ‘good story’ may lie as much in the probity of the relationship as in what is told or heard. It is even possible a ‘good story’ may not always be a story for ‘good’.     

Learning in Public Sector Organizations: A Theory of Action Approach

The importance of learning has since long been acknowledged for both business and public sector organizations. However, learning theory and research have tended to neglect the differences between these organizations, and to develop in separate and unrelated directions. To address these developments, this paper purports, first, to develop a theoretical framework that integrates various concepts from the fields of public policy learning and organizational learning, and that is specifically directed at public sector organizations. Second, the paper purports to illustrate the utility of this framework by applying it to policy-making in a Dutch municipality, the Pegasustown prostitution case.     

送行

我不会送行。它可是我所认为的世上最难做好的事情之一，对此，你大概也心有同感。     

Does demographic knowledge matter? Results of a poll in the New York City Watershed

A 1993 telephone survey of 1,150 households in 15 upstate towns in the New York City watershed asked a number of knowledge and attitude questions related to perceptions of national, local, and world population size. Considerable public ignorance of population size was revealed, with gender differences the most critical explanatory variable. Males were much more likely to respond to knowledge questions on population size, and to respond more accurately, even after several other characteristics were held constant. However, knowledge is at best unrelated to measures of concern about population, and even shows a slight tendency to be associated with lower concern.