AN ALGORITHM FOR CHOOSING THE SAMPLING TIMES FOR AN EXPERIMENT ON A CONTINUOUS PROCESS

Saunders & Eccleston (1992) and Saunders, Eccleston & Spessa (1992) developed an approach to the design of factorial experiments on continuous processes that allows for the correlation present in such processes. Their methods concentrated on identifying the order of application of treatments in such experiments, assuming that the spacing between experiments is constant. On a continuous process, there is no necessity to maintain equally spaced sampling times. This paper gives an algorithm for choosing the optimal sampling times for a factorial experiment aimed at estimating a particular parameter or set of parameters. It is shown that in practical situations the optimal sampling times give considerable improvements in the accuracy of the parameter estimates.     

Computers in local government: Malaysia

The utilisation of computers in three local authorities of varying sizes and responsibilities in Malaysia is reviewed with reference to a conceptual framework developed by the Public Policy Research Organisation of the University of California at Irvine. The importance of three sets of necessary and generally sufficient considerations for the effective utilisation of computers in local government is demonstrated. These are: the existence of an overall management strategy based on the user needs of the agency and the resources at its disposal; the personal commitment of individuals at all levels of the organisation; and stability in terms of personnel, administrative structures and environmental conditions. The findings of the study indicate strong similarities between Malaysian and US and British experience in this field.     

The Entrepreneurial Tendencies of Managers: a Research Note

In this study associations are sought between certain biographical, family, personality and career variables and the likelihood that managers will develop their own business venture. Results, based on an analysis of questionnaires completed by 194 managers, reveal that ownership of a business by self or parents together with certain personal characteristics predispose managers towards business founding. Contrary to expectations, job and career frustration does not incline managers towards proprietorship.     

Methods for comparing policies using multiple criteria: an urban example

This paper looks at a variety of methods that can be used in evaluating a set of alternate policies using multiple criteria. The methods examined are the structural mapping of indifferences, utility values, lexicographic ordering, factor analysis, concordance analysis and multidimension scaling. Each method is tested using hypothetical data for a problem in which alternative policies are proposed for allocating monies to housing and health projects in a town. The aim is to try to reveal as objectively as possible, a set of preferred alternatives from which one can be chosen in the political decision-making process. After describing and testing the methods individually, they are compared both on the basis of their results and on the principles involved in their approach. Conclusions about the validity of each method are given, and it is emphasized that all methods should only be used as aids in the choice of an optimal policy.     

Correlates of physical activity in a community sample of older adults in Appalachia

Although much has been learned about the global determinants of physical activity in adults, there has been a lack of specific focus on gender, age, and urban/rural differences. In this church-based community sample of Appalachian adults (N = 1,239), the primary correlates of physical activity included age, gender, obesity, and self-efficacy. Overall, 42% of all participants and 31% of adults age 65 years or older met recommended guidelines for physical activity, which suggests that most participants do not engage in adequate levels of physical activity. Of participants who met physical activity guidelines, the most common modes of moderate and vigorous activity were walking briskly or uphill, heavy housework or gardening, light strength training, and biking. These particular activities that focus on building self-efficacy might be viable targets for intervention among older adults in rural communities.