مجله کاربرد سیستم اطلاعات جغرافیایی و سنجش از دور در برنامه ریزی
سال سیزدهم شماره 4 (پیاپی 50، زمستان 1401)

Sports and physical activity as a social phenomenon has affected the lifestyle of many people all over the world in different physical, economic, educational, political and social ways. be This research is applied in terms of purpose and descriptive-analytical in terms of data collection. The statistical population of the research is experts and sports elites of Semnan province (84 people). Finally, the researcher made a questionnaire. In order to check the distribution of athletes, Arc-GIS software was used. The results showed that, in total, Semnan, Shahrood cities have the most athletes and Aradan city has the lowest amount of athletes, and in the examination of the coach-to-athlete ratio, Mehdi city is superior to other cities. Finally, Shahrood, Semnan, and Garmsar have the most athletes compared to other provinces. And football, badminton, wushu and basketball are among the priorities of Semnan province's sports fields. Due to the inequality and imbalance of sports fields at the first level The province, without a doubt, has a serious responsibility towards the sports community today, and all officials and people involved in the field of sports should take steps for the development and growth of sports. Because the modern world is a complex place for the growth and development of humanity. Sports is a very important part of this modern era.

Destruction of the land is a global process that ultimately leads to a decrease in soil fertility, and if we consider its concept as a kind of instability and imbalance in the relationship between man and the environment, it should be accepted that a large part of the world and the country of Iran are dealing with this environmental problem. is facing Dealing with the phenomenon of land destruction and desertification requires evaluating and monitoring the type and intensity of land destruction, determining the causes of the destruction, and taking necessary measures to face the problem, as well as checking the integrity of the projects mentioned. Remote sensing technology has a very valuable role in the evaluation and monitoring of land degradation and desertification in local, regional and global scales and has led to the creation of a new approach in studies related to the evaluation and monitoring of desertification. Considering the importance of the destruction issue, in this study, an attempt was made to evaluate the desertification of Isfahan watershed by using remote sensing data and Medalos model. In the first step, based on the situation of the region, six parameters of climate, soil, vegetation, underground water and management and policy were considered to evaluate the amount of destruction. The indices were quantified based on their effect on the destruction process and each of them was given a score between 0.5 and 1.5 according to the fuzzy method, and they were studied in the pixel scale. The obtained results indicate that 4% of the area is in the mild category, 10% of the area is in the moderate category, and 86% of the area is in the severe category of desertification. In terms of the range's sensitivity to destruction, 4% of the total area of the range is in the potential class, 22% in the fragile class A, 50% in the fragile class B, 20% in the fragile class C and 3% in the critical class. Therefore, about 92% of the area of the region is in the fragile layer.

Assess the quality of rainfall and stream flow information have an important role in improving the efficiency and correct their deficiencies. For an optimal monitoring network design, they should be reviewed periodically based on the information needs and future water resources development plans. In this study evaluates regional values of rain-gauges and stream-gauges in Jarrahi- Zohre basin using the discrete entropy. To determine the regional value of each station within a region, several information parameters, were calculated to identify essential rain gauge and critical area. Based on the obtained results, 39.7% of the area of the area does not have a rain-gauge station, while nearly 53% of the area of the area is in the class of lack, severe lack and lack of information exchange, and 40% of the area of the area is in the middle class. Therefore, the density of the 42 selected stations of the rain gauge network in Jarrahi - Zohre basin is not acceptable and it is necessary to seriously reconsider the distribution and layout of the rain-gauge stations in the area. Also, 21.16% of the area of the area does not have a water measuring station. While more than 5.7% of the district area is in the class of deficiency, severe deficiency and lack of information exchange, and more than 73% of the area of the district is in the middle, upper middle and surplus class. Therefore, the density of the 16 selected stations of the water measurement network is optimal and other active water measurement stations can be removed from the monitoring network of the area.

The purpose of this study is to evaluate the pollutant distribution of suspended particles with a diameter of less than 2.5 microns in sports spaces in Tehran. This research is practical in terms of output. At first, relevant data were collected and analyzed through pollutant measurement stations in the area. It was classified based on Kriging interpolation. Finally, based on the air quality index table, the importance level of health safety was classified and the corresponding map was prepared. Through the IO technique, the location layer of sensitive and vulnerable uses was placed on the surface of the area and the pollutant layer. The results showed that district 10 of Tehran municipality with an average concentration of 42 micrograms per cubic meter is the most polluted area in terms of this pollutant in Tehran. also; The highest amount of PM2.5 pollutant is related to the central and southern half of the region. also; The most polluted month of the year was November with an average concentration of 56 micrograms per cubic meter. This area has had 104 unhealthy days for sensitive groups in terms of air quality index based on the type of pollutants. The environmental and health risk assessment for this pollutant indicates that according to the William Fine method, risk number 105 has been determined, which represents the average level of risk. therefore; It requires corrective and emergency measures to control the risk.

Introduction of the research: 

The countries of the world that are on the path of progress pay special attention to infrastructures in national dimensions in order to maintain their performance and capabilities. Maintaining the performance and effective management of infrastructures with regard to limited resources requires a comprehensive model for prioritizing critical infrastructures.

The purpose of the research: 

to determine indicators and measures of criticality based on the intrinsic value of infrastructures

Thematic analysis method was used to answer the research question. In this method, by reviewing documents and scientific articles, prominent themes were extracted. The validation method of this research is interpretive validity. Final approval was done by presenting the results to five experts.

Based on the research findings, 61 initial codes were created. Due to the large number of codes, similar items were reduced to 11 themes based on conceptual affinity. Based on these themes, vital indicators were presented in the form of 9 main relationships.

The research results showed that the most important indicators include; The amount of investment, non-dependence on other countries in providing essential goods, gross domestic product, fair access to life facilities, sufficient access to clean water, access to health services, preservation and sustainability of resources (water, soil and air), usefulness of infrastructure in support and the production of military equipment that can be used to assess infrastructure.

The purpose of this research is to analyze the location of parks in Shiraz city and to examine the neighborhood pattern and the radius of access of existing green spaces in order to provide approaches and a suitable model for optimizing the spatial distribution system and location pattern of green spaces in Shiraz city. The science of this research is descriptive-analytical and applied. First, all the required spatial data were collected and a database was created in the GIS environment and ArcMap software. Then, using the AHP hierarchical process analysis method, the criteria of coverage radius, population and its density, accessibility, neighboring uses, etc. were weighted.According to the findings, it was found that accessibility criteria and population density are the most important effective factors in the distribution of urban uses. Also, in the distribution of green space, criteria of compatible and incompatible contiguity, population density and road network were studied and the contiguity of large green spaces and the final map to select the most suitable places and the most unsuitable places of green spaces were determined.According to the findings, it was found that a number of green spaces in the neighborhood system with all the studied uses except residential use are in a bad condition. Also, according to the final map, the most suitable places for building green spaces are the utskirts of Shiraz city in the south, east and west parts.