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Geographical information systems (GIS) have been extensively used to research public health issues in recent years. Cancer is one of the most important health issues around the world. In this study, a standard, effective and efficient GIS-based decision support system is established to ensure taking necessary measures for cancer cases, providing assistance to reveal the relationship between environmental health and geographical location, which may lead to cancer, keeping cancer cases under control, and places being recorded where the patients diagnosed with cancer dwell, together with their geographical locations. This system was fulfilled in the city of Sivas (Turkey). As a result of investigating, the cancer cases occurred between 2007 and 2010, The average of the cancer incidence rates for these years were calculated for both males and females and the curve equations representing them were estimated with a high coefficient of determination (R²=0.99). Whereas the coefficient of determination (R²) that expresses the strength of the relationship between the variables in the equation is 0.991 for females, this coefficient for males is 0.998. These equations almost represent existing data used to calculate the cancer incidence rates of the standardized age groups of males and females between 2007 and 2010.
Background. Fishes are important both economically and as indicators of environmental health. Questions on the health of aquatic habitats, on the potential effects of planned and accidental changes to the environment, and on the utility of adding sport and other fishes to a water body are best answered by an analysis which is known to be sensitive to changes. Materials and methods. As an initial test study I examined 107 fish species in and around the National Capital Region of Canada (50 km radius of the Peace Tower at the Parliament Buildings) in terms of 56 parameters. The parameters include life history characteristics such as size, lifespan, breeding season, egg numbers, and feeding, as well as zoogeographic origins, distribution, and risk status. Non-parametric tests and a logistic regression were used to analyze the data. Results. A test case comparison of sport versus non-sport fishes confirmed the empirical observation that sport fishes are predominately large piscivores. Critical parameters for threatened versus non-threatened species included piscivory and egg production, for present versus absent species feeding habits and refugial origin, and for refugial origin parameters associated with spawning. Conclusion. The parameter database can be of potential use to determine which species are at risk and which parameters are critical, why certain species are absent, and what parameters characterize sport fishes. The analysis forms a preliminary basis for more detailed field studies which can then be directed to specific life history traits and environmental variables.
The paper deals with the research of selected factors and their mutual relations that influence the formation of an environmental health of the Slovak people. Based on the results obtained by the research realized with a sample of elementary school pupils authors tried to generalize the knowledge suitable to implement the topic of a reasonable diet and formation of a healthy lifestyle to the curriculum of the natural science education in the educational system of the Slovak Republic.
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