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We present a discrete-event simulation model for maintenance operations of a fleet of fighter aircraft in crisis situations, where the fleet operations are affected by a threat of an enemy's actions. The model describes the flight process and basic modes of periodic maintenance and failure repairs. Features that are specific to crisis situations include(More)
The purpose of this study was to develop a life satisfaction scale (LSS) suited for elderly Finnish people. The subjects were non-institutionalized elderly living in rural and urban areas in south-western Finland. They were interviewed for a prospective follow-up study (TURVA project) concerned with the psychosocial development of elderly people during(More)
This article deals with certain preliminary findings obtained in a long-term prospective study begun in 1982 using the interview method; the first follow-up was carried out in 1986, the method consisting of a postal inquiry and the collection of recorded data. The sample consists of 200 randomly selected inhabitants of Turku born in 1920 and 189 individuals(More)
A simple and sensitive radioimmunoassay (RIA) for the determination of doxepin and desmethyldoxepin in plasma or serum has been developed using a previously reported antiserum to the tricyclic anti-depressants. Before assay, doxepin is separated from desmethyldoxepin with selective extraction at different pH values enabling each to be measured specifically.(More)
This study, which was carried out as part of the TURVA project on psychosocial adaptation in old age, is concerned with the significance of social support to people approaching retirement age. The population consisted of 200 urban dwellers and 189 rural dwellers, who were studied at the age of 62. The subjects were either about to retire in the near future(More)
The present paper deals with a Finnish long-term prospective study, the objective of which is to shed light on adjustment to retirement and old age. In this phase, only the preliminary findings of the initial survey carried out in 1982 are available. For the purposes of the study, a random sample of 200 individuals was drawn from among Turku inhabitants(More)
The onset of functional psychosis occurring in later middle age (45-64 years) was studied by comparing the life situation and personal history of 74 Turku patients admitted to the mental hospital for the first time with the corresponding information obtained for randomly selected controls of the same age and of the same sex. The annual first admission rate(More)
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