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Исследована кинетика накопления эксплуатационных дефектов (трещин) в деталях узлов тракторов, что может привести к созданию внезапных аварийных ситуаций и травмированию работников сельскохозяйственного производства на механизированных, транспортных и ремонтных работах.
In recent years, oil spill accidents have become increasingly frequent due to the development of marine transportation and massive oil exploitation. At present, satellite remote sensing is the principal method used to monitor oil spills. Extracting the locations and extent of oil spill spots accurately in remote sensing images reaps significant benefits in terms of risk assessment and clean-up work. Nowadays the method of edge detection combined with threshold segmenta- tion (EDCTS) to extract oil information is becoming increasingly popular. However, the current method has some limitations in terms of accurately extracting oil spills in synthetic aperture radar (SAR) images, where heterogeneous background noise exists. In this study, we propose an adaptive mechanism based on Otsu method, which applies region growing combined with both edge detection and threshold segmentation (RGEDOM) to extract oil spills. Remote sensing images from the Bohai Sea on June 11, 2011 and the Gulf of Dalian on July 17, 2010 are utilized to validate the accuracy of our algorithm and the reliability of extraction results. In addition, results according to EDCTS are used as a comparator to further explore validity. The comparison with results according to EDCTS using the same dataset demonstrates that the proposed self-adapting algorithm is more robust and boasts high-accuracy. The accuracy computing by the adaptive algorithm is significantly improved compared with EDCTS and threshold method.
Children injuries are one of the biggest problems in modern medicine that require vigorous and preventive actions. All kinds of injuries resulting from road accidents are the most common cause of death in children, more common than cancer and birth defects. In the years 1995-2009, there were 113 211 accidents involving 959 children aged 0-14 years in Poland in which 3791 children died and 117 730 were injured. Most fatalities were recorded in children in the age range 7-14 years. The following study presents the main problems of road safety and the nature, causes and consequences of injures in children in Poland and worldwide. It discusses the risks associated with children involved in traffic as well as ways of reducing the number of accidents in children based on the WHO report.
The conference was organized in Warsaw on the 14th of November 1997, by the Main Section of School Hygiene of the Polish Society of Hygiene. 202 people took part in the conference. They represented following institutions: a sanitary inspection, a health care service, academy institutes, pedagogical institutions, community councils. The purpose of the meeting was to point out and widespread local initiatives and ideas, appearing in various regions of Poland, that concern the following topics: 1: improvement of health conditions in schools, 2) improvement of conditions and realization's methods of increased number of physical training lessons in schools (a gradual increase from 3 hours a week at the present time to 5 in the year 2000), 3) providing actions to minimize the number of accidents among children and adolescents. There were panel discussions concerning the problems mentioned above. Many conclusions were formulated as the result of the discussion, out of which the most important are: ad 1) Maintaing the conditions of proper education demands cooperation between schools' headquarters and community councils and an initiative in seeking allies and sponsors. Examples of the activities of community councils to maintain proper safe and hygienic conditions in education should be propagated. These examples can be applied in another areas. ad 2) There is a dramatic shortage of facilities. Schools try to fulfil the increased requirements by: utilizing elements of natural environment, profiting from the spontaneous activity of children and parents, extending a traditional curriculum offert by new elements of physical culture. Increasing the number of physical training classes gives a chance to create social attitudes during these classes and health behaviour. ad 3) Accident risk in schools should be eliminated by earring out a systematic, many-sided and preventive activity. The coordination of actions should exist on all levels of local and national administration. In schools decisions concerning organizational solutions should be taken up, with the active involvement of headquarters, teachers, administrative workers and parents.
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