4 resultados para rural-urban migration
Resumo:
RESUMO: Conhecer a prevalência e perfil de consumo das populações revela-se como elementos importantes para o estabelecimento de Planos e Programas de intervenção na atenção aos problemas relacionados com o consumo do álcool. Este estudo transversal numa amostra de utentes dos cuidados primários de saúde teve por objectivo conhecer a prevalência do consumo do álcool em dois centros de saúde numa zona urbana, (Achada de Santo António e Achadinha) na capital do país e um centro de saúde numa zona rural (Picos), no interior da ilha de Santiago. O instrumento utilizado para avaliar os consumos de médio e alto risco do álcool foi o ASSIST. Foram entrevistados 302 utentes nos 3 centros de saúde. Os resultados mostraram uma prevalência ao longo da vida de 86,4% e nos últimos 3 meses de 62,3%. Mostrou que os homens tinham consumo superior às mulheres no centro de saúde de Achadinha (p value= 0.002 ) e Picos (p value=0.003). Em Achada de Santo António a diferença entre homens e mulheres não se mostrou estatisticamente significativa (p value= 0.397). Os resultados mostraram também nos dois centros associação significativa entre consumo de risco de tabaco e consumo de risco do álcool (p value=0.000 e 0.003) o que não se verificou em ASA (p value= 0.962). As variáveis idade, ocupação profissional, nível de escolaridade, não mostraram associação significativa ao consumo de risco do álcool mas mostraram associação significativa ao consumo do álcool nos últimos 3 meses. Mas o consumo do álcool nos últimos 3 meses não mostrou associação significativa ao consumo do tabaco nos últimos 3 meses. Espera-se que os resultados possam subsidiar a política de luta contra o álcool, no sentido de implementar acções que possam prevenir os danos à saúde e outras consequências resultantes do consumo abusivo do álcool. --------- ABSTRACT: To determine the prevalence and consumption profile of populations revealed as important elements for establishing plans and intervention programs in attention to problems related to alcohol consumption. This cross-sectional study on a sample of users of primary health care was aimed to determine the prevalence of alcohol consumption in two health centers in an urban area, (Achada de Santo António and Achadinha) in the capital and a health center in a rural area (Picos), in the island of Santiago’s contryside. The instrument used to assess the intake of medium and high risk alcohol was the ASSIST. We interviewed 302 users in three health centers. The results showed lifetime prevalence of 86.4% and in the last 3 months of 62.3%. It showed that men were superior to women in consumption in both health centers of Achadinha (p value=0.002) and Picos (p value=0.000). In Achada de Santo António, the difference between men and women was not statistically significant (p value = 0397). The results also showed the two centers had a significant association between risk of tobacco consumption and risk consumption of alcohol (p value = 0.000 and 0.003) which was not found in ASA (p value = 0.962). There was no association between the variables (age, professional occupation, and educational level) and risk of alcohol consumption, but they showed a significant association with alcohol consumption in the last 3 months. On the other hand, the consumption of alcohol in the last three months showed no significant association with the consumption of tobacco in the last 3 months. It is hoped that the results may support the policy against alcohol, may implement actions that can prevent damage to the health and other consequences resulting from alcohol abuse.
Resumo:
The rapid growth of big cities has been noticed since 1950s when the majority of world population turned to live in urban areas rather than villages, seeking better job opportunities and higher quality of services and lifestyle circumstances. This demographic transition from rural to urban is expected to have a continuous increase. Governments, especially in less developed countries, are going to face more challenges in different sectors, raising the essence of understanding the spatial pattern of the growth for an effective urban planning. The study aimed to detect, analyse and model the urban growth in Greater Cairo Region (GCR) as one of the fast growing mega cities in the world using remote sensing data. Knowing the current and estimated urbanization situation in GCR will help decision makers in Egypt to adjust their plans and develop new ones. These plans should focus on resources reallocation to overcome the problems arising in the future and to achieve a sustainable development of urban areas, especially after the high percentage of illegal settlements which took place in the last decades. The study focused on a period of 30 years; from 1984 to 2014, and the major transitions to urban were modelled to predict the future scenarios in 2025. Three satellite images of different time stamps (1984, 2003 and 2014) were classified using Support Vector Machines (SVM) classifier, then the land cover changes were detected by applying a high level mapping technique. Later the results were analyzed for higher accurate estimations of the urban growth in the future in 2025 using Land Change Modeler (LCM) embedded in IDRISI software. Moreover, the spatial and temporal urban growth patterns were analyzed using statistical metrics developed in FRAGSTATS software. The study resulted in an overall classification accuracy of 96%, 97.3% and 96.3% for 1984, 2003 and 2014’s map, respectively. Between 1984 and 2003, 19 179 hectares of vegetation and 21 417 hectares of desert changed to urban, while from 2003 to 2014, the transitions to urban from both land cover classes were found to be 16 486 and 31 045 hectares, respectively. The model results indicated that 14% of the vegetation and 4% of the desert in 2014 will turn into urban in 2025, representing 16 512 and 24 687 hectares, respectively.
Resumo:
The second half of the XX century was marked by a great increase in the number of people living in cities. Urban agglomerations became poles of attraction for migration flows and these phenomena, coupled with growing car-ownership rates, resulted in the fact that modern transport systems are characterized by large number of users and traffic modes. The necessity to organize these complex systems and to provide space for different traffic modes changed the way cities look. Urban areas had to cope with traffic flows, and as a result nowadays typical street pattern consists of a road for motorized vehicles, a cycle lane (in some cases), pavement for pedestrians, parking and a range of crucial signage to facilitate navigation and make mobility more secure. However, this type of street organization may not be desirable in certain areas, more specifically, in the city centers. Downtown areas have always been places where economic, leisure, social and other types of facilities are concentrated, not surprisingly, they often attract large number of people and this frequently results in traffic jams, air and noise pollution, thus creating unpleasant environment. Besides, excessive traffic signage in central locations can harm the image and perception of a place, this relates in particular to historical centers with architectural heritage.
Resumo:
Cities develop according to different patterns, undergoing population growth during some periods and decline (shrinkage) during others. Theories attempting to understand these behaviours include: 1) shrinkage is a natural process in the life cycle of a city, alternating with periods of growth, or 2) shrinkage is an extreme event that places cities into a continuous decline process with no return to population growth. We use retrospective data over a period of 130 years to study 25 Portuguese cities currently facing population decline, and show that both theories coexist in time and space. Five types of shrinking city are revealed: “Persistent Early Shrinkage” due to exodus fromthe rural periphery, “Metropolitan Shrinkage” due to the challenges of urban sprawl, “Recent Shrinkage” in de-industrialisation hotspots, “Cyclic Shrinkage” occurring in political transformation cores, and “Mild Shrinkage” due to life-style disamenity. As diversity of city population trajectories appears to be the norm in both Portugal and other Western European countries, the incorporation of this range into the management of urban transitions is recommended in order to reinforce city resilience.