Environmental modifications are leading to biodiversity changes, loss and habitat disturbance. This in turn increases contacts between wildlife and hence the risk of transmission and emergence of zoonotic diseases. We analyzed the environment and land use using remote spatial data around the sampling locations of bats positive for coronavirus (21 sites) and astrovirus (11 sites) collected in 43 sites. A clear association between viruses and hosts was observed. Viruses associated to synanthropic bat genera, such as Myotis or Scotophilus were associated to highly transformed habitats with human presence while viruses associated to fruit bat genera were correlated with natural environments with dense forest, grassland areas and regions of high elevation. In particular, group C betacoronavirus were associated with mosaic habitats found in anthropized environments.
The article presents the person and works of Georgy Voronoi (1868-1908), the inventor of an original method of diagrams, a student of the famous mathematician Andrey Markov. Georgy Voronoi graduated from the Department of Physics and Mathematics at the University of St. Petersburg, and subsequently worked as a professor of mathematics at the Imperial University of Warsaw. One of his students was the future outstanding Polish mathematician Wacław Sierpiński. In his brief lifetime G. Voronoi published several important scientific articles on number theory. In an almost 100 page paper in French published in 1908 he described a method of diagrams, or polygons, which became known as the method of Voronoi diagrams. In the digital age this method and its modifications found new applications. The entry “Voronoi” is getting more popular on the Internet, and the method of Voronoi diagrams and its modifications are widely described in handbooks and scientific articles. The article presents application of the method in the most popular computer programs from the Geographic Information System (GIS) group and presents examples of its usage in research on geographic space in various scientific disciplines.
The article is dedicated to the phenomenon of spatial chaos in the suburban areas of Polish cities, which, due to uncontrolled scattering of buildings (urban sprawl), require urgent retrofitting. These activities should contribute to the gradual densification of buildings and the more frequent functioning of suburbanites in the local environment, close to the place of residence. The authors claim that the retrofitting of suburbs can be accomplished by impacting two dimensions of spatial chaos: limited pedestrian mobility around the place of residence (walkability) and low access to basic services. The article proposes a set of ten indicators and a synthetic index of spatial chaos that allow measuring the level of disorder in particular suburbs, and therefore on a smaller scale than a municipality, and at the same time refer to the features of the living environment typical of Polish suburbs. These indicators are a direct reference to the abovementioned dimensions of suburban spatial chaos and allow to estimate the degree of compactness of suburban settlements in its functional aspect. The research proved that the more sprawl-like features, the higher the level of spatial disorder.
The traditional understanding of geographical space as a given place seems to be insufficient nowadays. It should be analyzed in a wider context of social, cultural, economic and environmental aspects and even psychological and emotional factors should be considered. It means that tourism space/destination, which has mostly been treated as a geographical domain, should also be studied as a set of similar factors. In this respect, any tourism space/destination is characterized by complexity and multi-dimensionality, which generate an ontological question concerning its nature. Taking these considerations into account, a research problem related to the essence of tourism space/destination as well as the possibility of its development has been formulated. The problem is followed by the hypothesis that the development of tourism space/destination is measured by the achievement of the state of tourism sustainability. In the empirical part, a method to assess the development of tourism space/destination has been proposed.
This article presents the GIS analysis of time availability of the Voivodship Emergency Ambulance and Sanitary Transport Station operates an Independent Public Health Care Facility “Meditrans” in Warsaw. The research focuses on determining the level of service for residents in each district with the emergency service station. In addition, an attempt was made to improve accessibility on the example of three selected districts. The authors attempt to select methodology of planning the location of the emergency service station in order to optimize the level of service for residents.
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