Abstract: A brief description of the author's concept of “regional satellite oceanography” is given with the emphasis on the environmental monitoring. A review of the state-of-the-art satellite sensors of interest for marine environmental control is presented. Some phenomena comprising the mosaic of experimental environmental monitoring of the Gulf of Finland are considered. They include: local coastal upwellings, eddies and “mushroom”-like structures, providing vertical and horizontal motions of water masses; water pollution; seasonal bloom; thermal pollution. Detailed information is given on the spatial distribution of suspended matter in the eastern part of the Gulf of Finland and the River Neva Mouth.…Some recommendations concerning the operational satellite and airborne monitoring of the marine environment in the Gulf of Finland, including data storage, processing and evaluation within the frame of an integrated environmental Geographical Information System for the Baltic Europe are given.
Abstract: Today, most health managers have more information available to them than they can properly use. Map-linked data bases (MLDBs) can allow a more thorough understanding of existing information. The packaging of information can substantially increase its influence. A brief history of computers in health information management is presented in general terms, including experiences gained by WHO in introducing map-linked data bases into its work. After the introduction of graphs and charts into information presentation, maps produced in this way promise timely and increasingly meaningful ways for the information specialist to present the health manager with the information needed to make…decisions and take action. Some applications of MLDBs are presented and discussed, including examples of how they are being used.
Abstract: According to Canada's definition of international migratory movement, there are three categories of persons entering Canada: landed immigrants; visitors; and returning Canadian citizens and permanent residents. Only those in the first category, however, are considered in official immigration statistics. As a result, Canada's data collection systems do not encompass all categories of immigrants as recommended by the United Nations. This paper presents the results of the first comprehensive attempt to enhance Canada's immigration statistics so as to comply with United Nations recommendations. It examines estimates for two categories of long-term immigrants, namely: long-term residents with temporary status; and Canadian citizens…and permanent residents returning from abroad. The estimation procedures involve extensive operations on three Canadian administrative data systems: the Visitors Immigration Data System of Employment and Immigration Canada; the Family Allowances Files of Health and Welfare Canada; and the Customs and Excise Files of Revenue Canada. These data are used to produce the number of immigrants in both of the neglected categories, as well as to calculate the geographic (origin and destination) and demographic (sex, age, marital status) structures of these groups. Results of the analysis of estimates for the period 1982–1988 show that, due to their size and characteristics, both of these neglected categories of immigrants constitute a significant part of immigration to Canada, and their importance has and will continue to increase over time.
Abstract: In the next decades the population of the Netherlands will dejuvenate and age. Although, the consequences of this development have already received much attention, it was often concentrated on consequences for a limited number of topics. Demographic change, however, affects nearly all aspects of society. To which degree and at which moment in the future the consequences take effect, will depend on among other things the age-specific character of the aspect in question. In this paper the effect of dejuvenation and ageing is explored for several aspects.