Optimal loan periods for undergraduate recommended reading

A model is developed for the total expected utility to borrowers of an undergraduate text book recommended by a lecturer. It takes account of the peaked demand for a book following a recommendation, measures of borrower satisfaction which involve both waiting time and reading time (loan period), and the persistence of would-be borrowers in requesting books not found on the shelves. Some parameters of the model were estimated by a method which elicited preferences of students in various choice situations; other parameters were estimated by librarians. Some specific conclusions are drawn regarding the optimal loan period of books in terms of their type and the number of copies held.     

Planning with multiple objectives

Planning any task that is characterised by the presence of multiple objectives presents the decision maker with a set of special considerations which are not present in the case of decision making with one unique objective. The paper outlines the stages in the formulation of a dynamic multiple-objective objective function and introduces the criterion complex as a decision making construct particularly suited to formulating and solving problems with multiple objectives. The paper then considers some of the mathematical properties of the alternative formulations of criterion complex.     

When, catastrophe happens. Assessment and intervention after sudden traumatic death

The goals of grief after sudden traumatic death is to acknowledge the loss, identify the changes the loss will have in the co-victim's life, and reinvest in life within the new structure. Although these goals seem simple, there is no definitive timeline for when these tasks will be engaged and completed by each of the family members. The pathway and time frame for each co-victim may differ.     

New Agendas and New Patterns of International NGO Political Action

International advocacy strategies devised for the political environment in which World Bank policy is decided are often not suitable for advocacy on broader financial policy and trade issues. Advocacy in these new agendas challenges prevailing models, which depict NGOs as mobilizing powerful governments and international organizations to influence a government's behavior. The patterns of international NGO political activity are diverse, sometimes restraining the power of international rules and authorities over individual governments, and require a new or broader model     

The natural history and risk factors of musculoskeletal conditions resulting in disability among US Army personnel

We describe the natural history of 13 musculoskeletal conditions requiring hospitalization and identify demographic, behavioral, psychosocial, occupational, and clinical characteristics most strongly associated with disability discharge from the Army. Subjects included 15,268 active-duty personnel hospitalized for a common musculoskeletal condition between the years 1989-1996 who were retrospectively followed through 1997. Back conditions had the greatest 5-year cumulative risk of disability (21%, 19%, and 17% for intervertebral disc displacement, intervertebral disc degeneration, and nonspecific low back pain, respectively). Cox proportional hazards models identified the following risk factors for disability among males: lower pay grade, musculoskeletal diagnosis, shorter length of service, older age, occupational category, lower job satisfaction, recurrent musculoskeletal hospitalizations, more cigarette smoking, greater work stress, and heavier physical demands. Among females, fewer covariates reached statistical significance, although lower education level was significant in more than one model. Modifiable risk factors related to work (job satisfaction, work stress, physical demands, occupation) and health behaviors (smoking) suggest possible targets for intervention.     

Drinking and other risk taking behaviors of enlisted male soldiers in the US Army

High-risk drinking is among the top three prevention priorities of the Department of Defense. Research suggests that enlisted male soldiers are particularly at risk for unhealthy drinking behaviors. 292,023 enlisted male soldiers who responded to a Health Risk Appraisal (HRA) survey between 1990 and 1998 were dichotomized into high and low-risk drinking groups. Logistic regression analysis showed that high-risk drinkers wore seatbelts less frequently, were more likely to drive > 15 mph over the speed limit, and to smoke more than 20 cigarettes/day. This high-risk group was predominately young (< 25), Caucasian, high school educated or less, and most likely employed as infantrymen or craftsworkers. The two highest risk occupational groups (infantrymen and craftsworkers) differ from each other, and from other Army occupations. Intervention programs should include safe driving habits and smoking cessation, as well as high-risk drinking, and should be tailored to the specific needs of the group at highest risk.