Grassland is one of the most represented, while at the same time, ecologically endangered, land cover categories in the European Union. In view of the global climate change, detecting its change is growing in importance from both an environmental and a socio-economic point of view. A well-recognised tool for Land Use and Land Cover (LULC) Change Detection (CD), including grassland changes, is Remote Sensing (RS). An important aspect affecting the accuracy of change detection is finding the optimal indicators of LULC changes (i.e., variables). Inappropriately selected variables can produce inaccurate results burdened with a number of uncertainties. The aim of our study is to find the most suitable variables for the detection of grassland to cropland change, based on a pair of high resolution images acquired by the Landsat 8 satellite and from the vector database Land Parcel Identification System (LPIS). In total, 59 variables were used to create models using Generalised Linear Models (GLM), the quality of which was verified through multi-temporal object-based change detection. Satisfactory accuracy for the detection of grassland to cropland change was achieved using all of the statistically identified models. However, a three-variable model can be recommended for practical use, namely by combining the Normalised Difference Vegetation Index (NDVI), Wetness and Fifth components of Tasselled Cap. Increasing number of variables did not significantly improve the accuracy of detection, but rather complicated the interpretation of the results and was less accurate than detection based on the original Landsat 8 images. The results obtained using these three variables are applicable in landscape management, agriculture, subsidy policy, or in updating existing LULC databases. Further research implementing these variables in combination with spatial data obtained by other RS techniques is needed.
- Klíčová slova
- Change detection (CD), Cropland, Grassland, Normalized Difference Vegetation Index (NDVI), Tasseled Cap (TC), Variables,
- Publikační typ
- časopisecké články MeSH
AIM: To perform a comprehensive review and provide an up-to-date synopsis of the incidence and trends of inflammatory bowel disease (IBD). METHODS: We systematically searched the MEDLINE (source PubMed), EMBASE and Cochrane Library databases in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (period: 1985-2018) to identify studies reporting population-based data on the incidence of pediatric-onset (< 19 years at diagnosis) IBD in full manuscripts. Two authors carried out screening and data extraction. Choropleth interactive maps and temporal trends were used to illustrate the international differences and incidences of and changes in IBD and subtypes. RESULTS: In total, one hundred forty studies reporting data from 38 countries were considered in this review. The highest annual pediatric incidences of IBD were 23/100000 person-years in Europe, 15.2/100000 in North America, and 11.4/100000 in Asia/the Middle East and Oceania. The highest annual incidences of Crohn's disease (CD) were 13.9/100000 in North America and 12.3/100000 in Europe. The highest annual incidences of ulcerative colitis (UC) were 15.0/100000 in Europe and 10.6/100000 in North America. The highest annual incidences of IBD-unclassified (IBD-U) were 3.6/100000 in Europe and 2.1/100000 in North America. In the time-trend analyses, 67% of CD, 46% of UC and 11% of IBD-U studies reported an increasing incidence (P < 0.05). The risk of IBD is increasing among first-generation of migrant populations. CONCLUSION: Globally, the incidence of IBD varies greatly by geographical areas. The steadily increasing incidence of pediatric IBD over time indicates its emergence as a global disease, suggesting that studies should investigate the environmental risk factors among pediatric cohorts.
- Klíčová slova
- Children, Crohn’s disease, Incidence, Inflammatory bowel disease, Inflammatory bowel disease-unclassified, Ulcerative colitis,
- MeSH
- celosvětové zdraví statistika a číselné údaje trendy MeSH
- Crohnova nemoc epidemiologie MeSH
- dítě MeSH
- emigranti a imigranti statistika a číselné údaje MeSH
- incidence MeSH
- kojenec MeSH
- lidé MeSH
- mladiství MeSH
- novorozenec MeSH
- předškolní dítě MeSH
- rizikové faktory MeSH
- ulcerózní kolitida epidemiologie MeSH
- Check Tag
- dítě MeSH
- kojenec MeSH
- lidé MeSH
- mladiství MeSH
- novorozenec MeSH
- předškolní dítě MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
- Geografické názvy
- Evropa epidemiologie MeSH
- Severní Amerika epidemiologie MeSH
The article looks at the accessibility of health care in the Czech republic in relation to the relevant legislation. Health care access is a frequently debated issue, but quantifying it is a difficult task. There are no official regulations in our country for determining the capacity of health care workers by category and type of health care provision that could be used to ensure health care is accessible to the inhabitants of a given region. Nonetheless, a government regulation came into force in 2013 regulating local health care access and travel time. This regulation is the first of its kind in the Czech rep., but (perhaps because of this) it contains a number of ambiguities, and this lack of detail makes it impossible to ensure the regulation is fully implemented and adhered to.The aim of this article is to attempt to identify these ambiguities and to broadly pinpoint the main factors potentially affecting health care access. To achieve this, an analysis is performed on the data on health care providers and methods using advanced GIS (geographic information systems) are utilized. Given the wide range of health care services on offer, the examples relate to primary health care, specifically practical medicine for children and adolescents.
- Klíčová slova
- Czech republic GIS., age structure, health care access, legislation, physicians, primary health care, regional differences,
- MeSH
- dítě MeSH
- dostupnost zdravotnických služeb * MeSH
- lidé MeSH
- mladiství MeSH
- služby zdravotní péče o dítě MeSH
- zdravotnické služby pro mladistvé MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
AIM: The susceptibility of children to polluted air has been pointed out several times in the past. Generally, children suffer from higher exposure to air pollutants than adults because of their higher physical activity, higher metabolic rate and the resultant increase in minute ventilation. The aim of this study was to examine the exposure characteristics of public elementary schools in Prague (the capital of the Czech Republic). METHODS: The exposure was examined by two different methods: by the proximity of selected schools to major urban roads and their location within the modeled urban PM10 concentration fields. We determined average daily traffic counts for all roads within 300 m of 251 elementary schools using the national road network database and geographic information system and calculated by means of GIS tools the proximity of the schools to the roads. In the second method we overlapped the GIS layer of predicted annual urban PM10 concentration field with that of geocoded school addresses. RESULTS: The results showed that 208 Prague schools (almost 80%) are situated in a close proximity (<300 m) of roads exhibiting high traffic loads. Both methods showed good agreement in the proportion of highly exposed schools at risk; however, we found significant differences in the locations of schools at risk determined by the two methods. CONCLUSION: We argue that results of similar proximity studies should be treated with caution before they are used in risk based decision-making process, since different methods may provide different outcomes.
- Klíčová slova
- GIS, health effects, particulate matter, schools, traffic density, traffic pollution,
- MeSH
- dítě MeSH
- geografické informační systémy MeSH
- hodnocení rizik MeSH
- lidé MeSH
- městské obyvatelstvo MeSH
- mladiství MeSH
- školy * MeSH
- výfukové emise vozidel analýza MeSH
- vystavení vlivu životního prostředí analýza MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- výfukové emise vozidel MeSH
