جستجوی مقالات مرتبط با کلیدواژه « Public Schools » در نشریات گروه « پزشکی »

Since human beings are constantly exposed to environmentalionizing radiations, the measurement of natural background radiations is of utmost importance. This cross-sectional, descriptive study aimed to measure the annual effective dose of natural background radiation in 93 schools in two districts of Hamadan, Iran in the winter, spring, and autumn of 2015-2016. Among the public schools in Hamadan, the schools located in district one with 1.41±0.079 mSv and district two with 0.955±0.04 mSv had the highest and lowest mean equivalent annual dose caused by natural radiation (γ rays) in a closed space, respectively. The mean equivalent annual dose caused by natural radiation in the closed space of all the public schools in districts one and two of Hamadan was estimated at 1.20±0.07 mSv as separated by geographical directions. In addition, the highest mean dose caused by natural gamma rays in the closed space of the school buildings constructed for more and less than 40 years was 1.42±0.22 and 1.42±0.15 mSv, respectively, and the rate of the effective annual dose of the public schools in Hamadan was determined to be 0.83 mSv as separated by district. The equivalent effective annual dose and risk of gamma ray cancer in the lifespan of the public school students in Hamadan was higher than the global average.

Research has shown that in parallel with the development of science and knowledge, it is necessary to create equal opportunities for all members of society. Therefore, the main purpose of the present study was to compare the comparative study of schools purchasing educational services in primary school with public schools in Qom province and provide a conceptual model.

The research method is library and field. By referring to different libraries, articles and books and reviewing scientific-research articles in magazines, quarterly and monthly magazines that were available in the field of current research, as well as using internal and external Internet sites, the required information was collected. In order to collect data, a semi-structured interview tool was used. Interviews were conducted with experts and specialists in the relevant field. Findings from interviews with experts and specialists through the winemaking model method, which has four stages of description, interpretation, proximity and comparison in comparative studies.

The results of t-statistic calculated in all components show that the values ​​obtained with the degree of freedom 29 and alpha 0.1 are greater than the critical t-value, so there is a significant difference between the observed averages and the community mean (p