جستجوی مقالات مرتبط با کلیدواژه « استان تهران » در نشریات گروه « علوم انسانی »

One of the major global environmental concerns in recent years is the phenomenon of global warming. Understanding the relationships between the phenomena affecting this phenomenon can be a way to reduce and control the surface temperature and prevent the formation of thermal islands.The aim of this study was to determine the relationship between surface temperature intensity with variables So2, CH4, Co, O3, NO2, HCHO, H2O, PM, LST-Day as well as temporal and spatial changes of thermal islands in Tehran province. In this study, 8-day productions of Aqua satellite and Sentinel-5 data along with coding method in JavaScript language in Google Earth engine system, path analysis and statistical clustering method have been used. According to the research findings, the trend and direction of spatial changes in the thermal islands of Tehran province during the years 2022-2000 from Tehran to the surrounding cities and satellite towns have been moving and relocating.Based on the temperature similarity between the 22 urban areas, six clusters were formed by K-mean clustering method. Based on the results of the final table of path analysis using AMOS software, among the studied variables, the highest coefficient of total impact on the increase in night surface temperature was related to the daily surface temperature, water vapor and carbon monoxide, respectively. PM particles also have the highest overall impact factor in reducing the night temperature.

Higher education in today's world is one of the specialized fields whose management requires the employment of managers who have the abilities and competencies to manage this organization. In this regard, talent management is considered due to its ability to create and maintain a competitive advantage. The purpose of the current research is to design a model of talent management for presidents of Islamic Azad University in Tehran province. The current research is qualitative and data-based in terms of practical purpose, in terms of exploratory nature, in terms of the method of data collection and analysis. The studied community includes experts in the field of talent management in higher education, which was conducted in the form of purposeful sampling with the snowball strategy and continued until theoretical saturation. The data collection tool is a semi-structured interview, the validity of which was confirmed by the triangulation method. Data were analyzed by open, axial and selective coding method in MAXQDA 2020 software. The results of the research showed that the dimensions of talent management for presidents of Islamic Azad University include "employee development, motivation, retention and ensuring recruitment". Next, the components and subscales of each were identified and classified.

The purpose of the present research was to institutionalize the effective factors of the public culture of public sports in the society. The method of doing this mixed research was exploratory. The statistical community includes specialists and experts (sports managers, etc.) to discover the factors of institutionalization and managers, specialists and experts to determine the weighting of the factors and a population sample of 1500 people in the 5 districts of North, South, East, West and the center of Tehran city with They were randomly selected. The measurement tool for data collection was a questionnaire made by a researcher in the field of institutionalizing the effective factors of public sports culture, and the face validity of the questionnaires was approved by the professors of sports management, as well as their final validity using Cronbach's alpha coefficient of 0.95. were approved. Data were analyzed using Kolmogorov-Smirnov test and confirmatory factor analysis through SPSS and Lisrel software. The findings showed that the most important dimension in the institutionalization of sports and the effective factors in the culturalization of public sports, based on the factor loadings, was the organizational dimension with a factor loading of 1.07. After that, there were the individual dimension with a factor load of 0.82, the group dimension with a factor load of 0.72 and finally the environmental dimension with a factor load of 0.65. The conclusion is that in the institutionalization of culture, it is necessary to pay attention and prioritize organizational, individual, group and finally environmental aspects by Tehran Municipality and related institutions.

Cities are the most important man-made phenomena in the land that play a major role in the development or non-development of regions and areas. According to the statistics provided by the United Nations, more than 50% of people live in cities and the urban population growth rate is 4 times. The population is rural. Based on this, the study of cities is important because they are places where people and activities are loaded. Demographic changes in recent years in the country have caused the growth of the urban population to be uncoordinated at different times and the distribution of its growth in different cities of the country is uneven and the growth trend is increasing and fast. The growth of the country's urban population and the lack of attention to the urban network and the distribution of urban centers and centers in the territory on the one hand and the rapid growth of urbanization on the other hand have led to fragmentation and incoherence in the spatial structure of the country. Migration and the growing trend of urbanization and economic-social and political developments in recent decades of Tehran province have been the most important factors in creating an unbalanced pattern of the urban network. Nowadays, the population growth of cities along with their socio-economic issues is a new form of city and urbanism and It has created urbanism. Organizing and balancing the space is one of the key issues in the field of urban planning. Bigger cities exert their dominance over smaller cities by absorbing and concentrating more surplus. The continuation of these conditions causes the formation of imbalance in the spatial distribution of cities and the emergence of problems caused by congestion and congestion in cities and the evacuation of other places. This article aims to provide solutions for balancing by examining and analyzing the urban network in Tehran province. to present.

Therefore, the method used in this research is descriptive-analytical, using rank-size models, Lorenz curve and entropy coefficient, as well as for quantitative and qualitative analysis using Excel software to investigate and analyze the urban network of the province. Tehran has paid.

The results of the findings show that many industrial and service activities are concentrated in Tehran province, especially Tehran metropolis, due to its administrative, political, economic situation and the lack of spatial justice and land development policies in Iran. The amount of concentration in the country is higher in Tehran province and among the cities of Tehran province, in Tehran metropolis. The presence of concentration causes migration, and urbanization in Tehran province has gained wider dimensions with the spread of Tehran metropolis and the creation of Tehran metropolitan area. So that this province has medium, small and rural cities. While in 1355 it had only 6 small cities. Transformation in metropolitan areas is a product of decentralization, which can be called the movement of rupture. The basis of the formation of the metropolitan area is directly related to the level of communication technologies such as railway lines and highways. Because by facilitating travel to and from Tehran along its communication axes, they have been created in the form of a cluster with the center of Tehran metropolis. Therefore, the spatial structure of the urban network of Tehran province is based on the center-periphery development pattern, and the lack of proportional distribution of population and services at the level of the region has created an unbalanced network system and has created a kind of divergence and lack of integration in the region. Because none of the cities in the metropolitan region of Tehran, even the metropolitan city of Tehran, have a suitable position in the field of production competition at the national and especially international level. While this type of city accumulation and urbanization has brought many natural and human risks and is an obstacle to sustainable development. The increase in urban population in Tehran province originates from the scattered surface of Tehran metropolis, and the concentration of urban population in the western part of the province is more in accordance with the communication routes than in other directions. Although medium-sized cities have repaired the spatial discontinuity in the urban network of the province to some extent, according to the rank-size model, the distance between the metropolis of Tehran and other cities of the province is still very large and there is no balance in the urban network of the province. In addition, the urban population has settled not in a uniform manner but in a cluster around the metropolitan city of Tehran and in the next order of medium cities.

Spatial planning programs at the national and regional levels are very helpful in achieving development, maintaining the balance of the regions and providing an operational framework for each province in order to implement national development strategies (of course, with full consideration of environmental considerations and regional capabilities). Among the country's spatial planning documents, the compilation, study, review and implementation of the Spatial planning document of Tehran province as the capital of the country, which also has administrative, political, economic, service, and commercial centers, is of great importance. In this study by using of 1393 regional statistics, a regional input-output coefficients for Tehran province is calculated based on FLQ-RAS method. In this research, we seek to answer an important question: Do the key sections introduced in the Tehran province Spatial planning document correspond to the key sections extracted from the regional data-output table? The results indicate that there is a difference between the key sections of the provincial Spatial planning document and the sections extracted in this study; Therefore, despite the existence of theoretical and practical shortcomings in Spatial planning in Iran, Even if the province's Spatial planning are based on a planning document, Due to these differences, Targeting economic activities and proper prioritization will not be done in allocating limited resources, and the resulting problems will always threaten the province.

The aim of this study was to identify the dimensions, components and indicators of productivity management (Case study: faculty members of Islamic Azad Universities of Tehran province). The present study is developmental in terms of purpose, qualitative in data and implementation method, and survey research in terms of data-collection. The participating community for interview included the experts in productivity management and Human resources; 30 people were selected purposefully as the statistical sample with realization condition of theoretical saturation. The library and field methods for data- collection and semi-structured interviews and research-made questionnaire for data- collection tool were applied. Content analysis and maxqoda 12 software were used for analyzing qualitative data. At last, 6 dimensions,12 components, and 52 indicators were finalized. The results of the study show that the dimensions of productivity management considering the management dimension include (leadership and implemental) components; organizational dimension includes (communicational and individual management) components; the environmental dimension includes the components of (interior and exterior factors); the individual dimension includes the components of (personality and moral features); professional dimension includes the components of (individual and organizational profession) the value dimension includes (related to individual and related to profession). Considering the dimensions and components, the proposed pattern has a good fit.

The phenomenon of dust is a sign of environmental erosion. Climate change such as lack of rainfall, the presence of erodible soil particles and high wind speeds create the right conditions for the occurrence and severity of dust storms. To better understand the effects of dust, its origin, control and response to its harmful effects, it is necessary to identify and monitor this phenomenon regularly. In this study, with the aim of comparative study of changes in the spatial pattern of dust phenomenon in Tehran province, during 20 years (period 2000-2019) after examining the days with dust phenomenon and extracting related wind roses, using images level 1 of Modis sensor in Terra and Aqua satellites, three indices NDDI, AOD and Dbaael were calculated. Summarizing all the patterns of dust indices in 2000, the main centers of dust density were located in northern Iraq and the plains south of Lake Urmia and the plains on the western slopes of the Zagros. However, the final maps extracted from the 2019 models show that in general, the density of dust particles in Iran has decreased and the dust core in the southern latitudes of Tehran province from Shahrbar to Varamin and Robat Karim and specifically on the late sedimentary landforms. The catchments of Tehran province are concentrated and this can indicate the fundamental changes in land cover during the twenty years of research.

The important role of financial supporters and financial supporters in helping to develop different sectors of countries is quite obvious, and donors have found a special place in this regard. The purpose of this study is to identify and prioritize the factors affecting the will and participation of this group of individuals in the development of sports venues and promote related per capita. For this purpose, the components identified in the two provinces of Golestan and Tehran was compared and comparatively comparable.

The present study is a type of applied research and a descriptive-surrounding data collection. Key points were used to identify effective factors based on the foundation's data strategy and coding. The statistical population of the research in the qualitative section of the research included experts and specialists in the field of sports management. The FAHP technique was used to weight and prioritize components.

A total of 112 initial codes were extracted from a total of 16 interviews, which were reduced to 13 subs -categories during the coding process, and finally 6 main categories were extracted on the basis of secondary open codes. In Golestan province, the "economic factors" category of 0.54884 had the highest importance and the "development" of 0.05222 had the lowest priority. On the other hand, the results for Tehran province showed that the category of "economic factors" weighing 0.72314 has the highest degree of importance and the "trusting" category of 0.06652 has the lowest priority. The important point is that in all two provinces that have the highest weight, the "economic conditions" are "economic conditions".

In order to expand the qualitative and qualitative expansion of the charity culture in the community and to use the benefits and capabilities of the charity and encourage them to meet the sports needs of the community in different regions of the country, as well as guide and organize the charity's financial and specialized assistance, it is necessary to make a definite mechanism, Predict and adopt.

Despite the importance of Building Information Modeling in the Iranian construction industry in recent years, the low productivity of this industry has limited the realization of many benefits of BIM implementation. One of the obstacles to the wider implementation of BIM at the industry level is its non-acceptance. The situation of BIM acceptance in Iran is slow and unfavorable. One of the obstacles to BIM acceptance is the lack of convergence of the dimensions of Hofstede national culture with BIM acceptance. These dimensions can accelerate or delay the acceptance of new technologies; As a result, in this study, semi-structured interviews have been conducted with a number of pillars of construction companies ranked first in Tehran province. Data analysis (by qualitative content analysis) showed that the shorter the power distance, the less uncertainty avoidance, the longer orientation, the more masculinity and collectivism, the easier it is to accept BIM technology. Solutions were also identified to strengthen the impact of these dimensions on BIM acceptance, including managers' incentive policies, the entry of high-risk personalities, mechanization of company structures, the creation of a participatory environment, and the development of a BIM acceptance culture through training and Learning pointed out. The findings of this study help construction industry activists to consider the cultural and ecological aspects of BIM deployment in the organization in addition to the technical aspects of BIM.

Recently, high extreme and frequency distribution of higher sequence of precipitation have been attended more. Through this, because of geographical characteristics of each area, diverse and different thresholds have been presented and utilized for the mentioned precipitation’s characteristics. Through the present research, for exploring and analyzing the extreme precipitation event in Tehran through the 1983-2016 statistical periods, some of the indexes presented by World Meteorological Organization Committee were utilized.
Data and

The extreme precipitation event distribution sequence behavior and frequency analyses and severity of the mentioned event were explored by using the Peak Over Threshold value model (POT). Selecting the suitable threshold for calculating the peaks higher than threshold using the 95 percentile methods, Mean of Remaining Life (MRL) and Model-Base Controlling (MBC) was done. Distribution parameters’ determining by maximum likelihood method and evaluating the occurrence and extreme events’ severity was investigated by using the Average Returning Intervals (ARLs).

The results accessed from Man-Kendal illustrated that in the studying stations, the significance process in the extreme indexes through the 1983-2016 was not met.

Exploring the development curves showed that through the 34-year-old statistical period (1983-2016), most of the observed extreme events in the stations had 1 to 10 years return. Q-Q exploring charts and χ2 statistics showed that POT model included the high quality for modeling the extreme events in the studying area

The study of the roles and functions of cities and their developments is an important question in modern geographic studies. The unbalanced spatial distribution of populations, irregular migration to metropolises and imbalances in the distribution of economic opportunities between regions have led to focus on the idea of ​​medium-sized cities as one of the most effective approaches to planning of the territory. Therefore, the purpose of this article is to study the performance of the city of Nasimshahr as an intermediary city in the spatial development structure of Tehran province. The research method is "descriptive-analytical" and the data collection method is based on both library and field methods. Quantitative methods and models have been used to study the role of the city. Economic models show that the city's share of industrial employment is above average in terms of industrial employment. The structural change index shows that the changes in Nasimshahr were greater than those in Tehran province. The results of the share change model show that the service sector has grown faster than the province. Considering the spatial structure, whatever the role of the city, the spatial imbalance in the urban network of the province is obvious. Demographic models show that Nasimshahr has great elasticity to attract the overwhelming population of the province. Therefore, given its strengths and possibilities, it can play a key role in regional leveling as a service and industrial center in the southwest of the province.

Quality of life is a topic that has been considered the most important issue in the twentieth century. With the socio-economic development of countries and the twentieth century. With the socio- economic development of countries and the advancement of humanities, technology has gradually become more prosperous, and since it is a complex, complex and multidimensional issue capable of doing work, health, well- being, and mental well- being, this research it sought to answer, as far as possible, the main research question of the impact of quality of life on fertility of women working in welfare organization of Tehran province. To achieve this, a descriptive- analytic method was used and the quality of life questionnaire was used in the statistical population (all married women in the welfare organization of Tehran province (aged 15 to 45 years).  The results of the current research suggest that quality of life is associated with fertility, so that as quality of life increased, beliefs are reduced.