فیلترها/جستجو در نتایج    

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متن کامل


نویسندگان: 

وکیلی هادی

اطلاعات دوره: 
  • سال: 

    1397
  • دوره: 

    18
  • شماره: 

    7 (پیاپی 59)
  • صفحات: 

    313-324
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    580
  • دانلود: 

    128
چکیده: 

دایره ی المعارف جنبش های دینی نوظهور، ویراست پیتر بی کلارک، دیدگاهی به راستی جذاب و معتبر از جنبش های دینی نوظهور در پس زمینه ای جهانی ارائه می کند. این دایره ی المعارف حاوی 428 مقاله از دانشگاهیان برجسته است که نمونه هایی قابل توجه از جنبش های دینی نوظهور در هریک از قاره ها را بررسی می کنند. کلارک به عنوان ویراستار درآمدی عالی با عنوان «ادیان جدید به عنوان پدیده ای جهانی»، «راه نمای منابع مطالعات جُدِن»، و مقاله ای مفید با عنوان «گونه شناسی ادیان جدید» در این دایره ی المعارف گنجانده است. این دایره ی المعارف مرجعی برجسته، تحقیقی، روزآمد، مهم، و ارزش مند برای کتاب خانه های دانشگاهی به شمار می رود. با این حال، این دایره ی المعارف از اشکالات و معایبی رنج می برد: از جمله، وجود تناقضات آشکار در نمایه ها، بروز اغلاط تاریخی، چاپی و غیره در متن آن، و یکی دانستن جُدِن ها با فرقه ها، گروهک ها، و گروه های ضد فرهنگ.

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اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    13
  • شماره: 

    1
  • صفحات: 

    167-197
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    195
  • دانلود: 

    18
چکیده: 

In the present study, the main purpose is the qualitative study on garbage collection in Tehran city. It has been done by qualitative research method. Semi-structured interview and purposeful sampling techniques were used in data collection. To do this, 15 people were interviewed and the sample size in the present study was determined based on theoretical saturation. Thematic analysis was used to analyze the data. Theme analysis was performed at 4 levels of primary, main, central and core themes. A total of 184 initial themes were extracted from all interviews. In the main coding stage, the following 9 main themes were merged. Escape from poverty in the origin and the inevitable choice of inferiority, society's view to garbage collectors, and high stress, strengthening the cycle of academic reluctance and illiteracy, physical and mental torment, unknown horizon and confusion of the Khojies, legal ambiguity and customary definitions and contracts, complaints from relevant institutions, the entry of the mafia and the formation of rent and corruption. Finally, these themes fall into two categories of social harmfulness of recycling and institutional exclusion and illegallity of the status of garbage collectors in the second distrect in the form of the core theme of the structure of socially harmful and institutionally illegal, waste phenomenon explained..

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نویسندگان: 

اطلاعات دوره: 
  • سال: 

    1388
  • دوره: 

    3
  • شماره: 

    3
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    284
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

لطفا برای مشاهده متن کامل این مقاله اینجا را کلیک کنید.

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بازدید 284

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
اطلاعات دوره: 
  • سال: 

    1388
  • دوره: 

    2
تعامل: 
  • بازدید: 

    583
  • دانلود: 

    366
چکیده: 

در فرایند جابجایی بار و مسافر هوایی، ارایه خدمات الکترونیکی نقش کلیدی داشته و از اهمیت فراوانی برخوردار می باشند. سیستم های رزرواسیون بلیط مستقر در سطح شهر نمونه بارزی از این خدمات است.مسافر با در دست داشتن بلیط به عنوان سند معتبر به فرودگاه مراجعه نموده و سایر فر آیندها در فرودگاه تا مرحله پیاده شدن وی در مقصد، در فرودگاه انجام می پذیرد.هدف ما در این مقاله ارایه مکانیزمی است که پا را فرا تر این روند گذاشته و بیان ایده ای است تا به کمک آن مسافر هوایی با استفاده از امکانات ICT، به طور موثر، با سهولت و با ایمنی و امنیت بالاتر و با بهره گیری از امکانت مناسبی مانند زیر ساختهای مخابراتی و الکترونیکی، کیوسکهای سلف سرویس، سیستمهای کنترل عزیمت هواپیما(DCS: Departure Control System) ، سرویسهای دسترسی سریع ریلی و زمینی و استفاده از مدهای ترکیبی حمل و نقل ... از منزل تا فرودگاه جابجا کردد. البته این مهم با توجه به تمرکرزدایی فعالیتها، در فرودگاه نیز با حداقل ایستایی نیز هنراه خواهد گردید. مراکز شهری خدمات الکترونیک هوایی در نقاط مناسبی از شهر و با چنین منظوری راه اندازی و عملیاتی خواهد گردید.

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اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    11
  • شماره: 

    2
  • صفحات: 

    61-74
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    155
  • دانلود: 

    27
چکیده: 

ABSTRACTDuring the last century, ports of Persian Gulf become the most important storage, refining and transportation of crude oil, oil derivation, petrochemical products and also, business activities. Nowadays, due to functional diversity between ports, the impact of port activities on the development of urban spaces will be different, and this issue leads to structural differences of port cities. The purpose of this research is to identify the key variables affecting the relations and spatial structure of port-city in Dubai as the most thriving and successful port-city in the Persian Gulf. This research is based on deductive reasoning and carried out by analysis of cross effects with secondary data (results of other prominent articles) and also primary data (questionnaire). sampling method is based on purposive sampling and Micmac software was used to analyze the data. Output of Micmac software shows the position of the instability of the system. Therefore, the position of each variables in the conceptual model can be categorized to driver, linkage, dependent, and autonomous factors. The research findings indicate 4 variables (like as “income, cost and investmnets in port-city”) can be introduced as a driver factor, 5 variables (like as “advanced multimodal transportation in the port”) can be introduced as a linkage factor, 6 variables (like as “quality of living environment and desirable city”) can be introduced as a dependent factor, 3 variables (like as “environmental protection and sustainable development of the city-port”) can be introduced as an autonomous factor. The rapid development of Dubai can be explained by the purposeful distribution of revenues from trade and tourismExtended AbstractIntroductionDuring the last century, ports of Persian Gulf become the most important storage, refining and transportation of crude oil, oil derivation, petrochemical products and also, business activities. The global increase in oil demand since the 1950s led to the creation of discovery of new oil wells and large industrial areas. With the construction of new oil or gas facilities in the port areas, increasing oil revenues contributed to the countries of the Persian Gulf region and form a new geographical relationship between ports and coastal cities which had an impact on the spatial structure and relation of them. Nowadays, due to functional diversity between ports, the impact of port activities on the development of urban spaces will be different, and this issue leads to structural differences of port cities. In the 1950s, Containerization (container loading technology) was based in some of the world's ports and created a huge transformation in the shipping industry, which had a significant impact on the development of ports. Although the ports of the Persian Gulf have made a significant contribution to the economic growth and physical development of other ports in the world, but few researches have been done on the variables and factors affecting the development of the spatial structure of the important ports of the Persian Gulf. This region, due to its unique geographical location, has always been considered as a most important corridor in the field of economic and transportation throughout history. Some of the most important energy and commercial ports in this region are: Dubai, Manama, Kuwait, Dammam, Doha, Bushehr, Bandar-Abbas and Assaluyeh. In this regard, the purpose of this research is to identify the key variables affecting the relations and spatial structure of port-city in Dubai as the most thriving and successful port-city in the Persian Gulf. MethodologyThis research is based on deductive reasoning and carried out by analysis of cross effects with secondary data (results of other prominent articles) and also primary data (questionnaire). The method used in this research is quantitative and the sampling method is based on purposive sampling. the variables affecting the spatial structure of port-city relations were identified in the form of a review of 31 prominent articles. 25 experts (who had comprehensive knowledge and information about the development process of the city-port of Dubai) participated to determine the effectiveness or influence of variables. Finally, the output of data analysis was done by the Micmac software. Results and discussionOutput of Micmac software shows the position of the variables in the diagram that it indicates their status in the system and their role in the dynamics and changes of the system. The method of distribution and dispersion of the variables in the spatial structure of port-city relations indicates the instability of the system. Therefore, based on the output of the system, the position of each variables in the conceptual model can be identified in five categories (driver, linkage, dependent, autonomous and regulatory variables). According to the results, some variables such as “the changes in the strategic positions” and “geopolitics of port-city”, “the modification of the management method” and “regional planning of the ports”, “the promotion of local governance in the relations between port-city” and “the way of national and international management of ports have been introduced as driver variables. On the other hand, five variables consist of “advanced multimodal transportation in the port” and “income, cost and investment in the port-city”, “the contrast and physical integration of the port - city space”, “the development of various industrial and production activities in the ports and their local hinterland” and “their qualities Financial and commercial policies of ports” have been introduced as linkage variables. Findings of research also shows that some variables consist of “quality of living environment and desirable city”, “quantity and quality of transit corridors (rail, road and air) to hinterland”, “construction and launching the new port (sea port or dry port)”, “terminal facilities and infrastructure and warehousing”, “conflict or convergence between the city and the port” and “increase in population growth rate and migration to the port - city” categorized as dependent variables. Three variables including “cultural and historical background of ports”, “use of cheaper energy, Less-polluted, clean and renewable energies in the city-port” and “environmental protection and sustainable development of the city-port” categorized as autonomous variables. Finally, a variable with the title of “improvement in management and information technology and development in loading, unloading and storage of commodities” have been introduced as regulatory variables. The findings of this research have a remarkable similarity with other researches carried out in the field of city-port relation and clearly emphasize the direct impact of the "investment in port-city" in the development of them. For example, Grossmann (2008) emphasized that city-port of Hamburg has become one of the largest ports in Northern Europe during the last few decades due to huge domestic and foreign investment. ConclusionThis research carried out in order to introduce and explain the key variables affecting the development of the spatial structure of the port-city of Dubai. On this basis, 21 variables have been extracted by systematic reviews of prominent articles. In the following, 25 experts were selected with the purposive sampling method. Among the 21 variables extracted, 4 variables (like as “geopolitics of port-city”) introduced as a driver factor, 5 variables (like as “advanced multimodal transportation in the port”) introduced as a linkage factor, 6 variables (like as “quality of living environment and desirable city”) introduced as a dependent factor, 3 variables (like as “environmental protection and sustainable development of the city-port”) introduced as an autonomous factor. The rapid development of Dubai can be explained by the purposeful distribution of revenues from trade and tourism. A part of these revenues has been directed towards investment in important transportation infrastructures such as airports and ports of this city. These strategies have a wide impact on improving the economic growth of the city and the development of the port in order to adapt with the global trade and advanced technologies. FundingThere is no funding support. Authors’ ContributionAuthors contributed equally to the conceptualization and writing of the article. All of the authors approved the content of the manuscript and agreed on all aspects of the work declaration of competing interest none. Conflict of InterestAuthors declared no conflict of interest. Acknowledgments We are grateful to all the scientific consultants of this paper.

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اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    7
  • شماره: 

    2
  • صفحات: 

    181-202
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    188
  • دانلود: 

    24
چکیده: 

Purpose: The future of the construction industry is increasingly influenced by new technologies. In order to adopt appropriate strategies in facing new technologies, it is necessary to know the possible futures of the construction industry. This research was done with the aim of explaining the technological uncertainties and compiling the future scenarios of the construction industry.  Method: The research method is applied and was carried out with a combination of quantitative and qualitative methods. First, the library study was used to determine the technological drivers, then the Structural Analysis was used to explain the technological uncertainties, and finally, the Schwartz method was used to compile the scenarios. The statistical population is experts of construction industry. Findings: Nine technological uncertainties affecting the future of the construction industry have been identified and for each of them, three states of decline, stagnation and progress have been considered. Data analysis by Scenario Wizard shows eight probable scenarios. The portfolio of scenarios including four groups of progress scenarios, towards progress, towards stagnation, and towards wane has been compiled. Conclusion: In the progress scenario, the 89% of uncertainties have developed. In  towards progress, 56% of the factors are in the development status, which indicates the development of the technological factor application. In the stagnation scenario, no progress has been made in the application of uncertainties and they are in a static state. In towards wane, uncertainties have been placed in a situation of reduced use.

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    13
  • شماره: 

    4
  • صفحات: 

    135-150
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    38
  • دانلود: 

    9
چکیده: 

A B S T R A C T Green city is one of the approaches to sustainable development. “green city” is an environmentally friendly city compatible with the concept of sustainable development and can be used for the welfare and security of its inhabitants. Based on the concept of a “green city,” urban managers try to have the least destructive effect on the ecosystems upon which cities rely. Green city is one of the sustainable development approaches that reduce the environmental footprint of cities. The purpose of this study is to evaluate the situation of Mashhad metropolis in terms of the objective characteristics of the green city. In this study, 14 indicators of electricity consumption per capita, green space per capita, population density, water availability, sewage availability, superior public transportation network, urban mass transportation, traffic reduction, annual production waste per capita, carbon monoxide, concentration nitrogen dioxide, sulfur dioxide concentration, particulate matter concentration, and air quality were exerted. To determine the importance of research indicators, the Shannon entropy method, and the status of Mashhad city areas in terms of green city indicators, the VIKOR multi-criteria decision-making method has been applied. The results showed that most areas of Mashhad are average and below average in terms of green city characteristics, and only District 9 is in very good condition (0.636). Also, based on the results of this part of the research, District 5, with the value of VIKOR index of 0.969, is in the last rank in terms of objective characteristics of the green city Extended Abstract Introduction Green city is one of the approaches to sustainable development. A “Green city” is an environmentally friendly city compatible with the concept of sustainable development and can be used for the welfare and security of its inhabitants. Based on the concept of a “green city,” urban managers try to have the least destructive effect on the ecosystems upon which cities rely. Green cities constantly try to manage their environmental effects by reducing waste, increasing recycling, reducing air pollution, increasing population density, developing open urban spaces, and encouraging the development of sustainable local businesses. Green cities were first used to evaluate 30 European cities by the Economist Intelligence Unit (EIU) in 2009 with the financial support of Siemens and the aim of reducing the environmental effects of human activities in cities. In that study, eight indices of carbon dioxide, energy, construction, transportation, water, recycling and land use, air quality, and environmental governance were used. Later, the Economist Intelligence Unit, with the financial support of Siemens, evaluated the status of the green city index in 17 Latin American cities, 15 African cities, 22 major Asian cities, and 27 cities in United States, Canada, Australia, and new Zealand. In recent years, even some Western Islamic scholars have, in various publications, shown that Islam is an ecological religion. In Iran, the issue of protecting the environment has not received much attention regardless of its rich cultural and religious background and its confirmation in Article 50 of the Constitution of the Islamic Republic of Iran. Mashhad is the second metropolis of Iran, located in North-East of Iran, and is one of the counties of Khorasan Razavi Province. According to the 2016 Iranian Population and Housing Census, its population was 3057679 people (The Vice-Presidency of Planning and Development of Mashhad Municipality). In Mashhad, due to several reasons including the presence of Imam Reza Shrine (PBUH) and arrival of millions of pilgrims per year, population growth, increased garbage production (production of 896534 tons of garbage in 2016 (The Vice-Presidency of Planning and Development of Mashhad Municipality), air pollution (increased number of unhealthy days from 46 days per year in 2015 to 88 days in 2016 for sensitive groups and 4 days of unhealthy air for all groups in 2016 (Center for Monitoring Environmental Pollutants of Mashhad Municipality) the 2025 vision of the city has paid attention to the environment in the form of five general objectives; however, just like the national level, no specific pattern for environmentally-compatible urban development, such as green city, is determined. Analysis of the green city index in Mashhad metropolis can considerably contribute to urban managers and planners in addition to providing a pattern for evaluating the present situation in other cities of Iran and improving the quality of life regardless of the current status of the urban environment in Iranian cities; we can preserve these environments as parts of the natural environment for future generations.   Methodology In terms of its goal, the present study is an applied one; in the study, drawing upon other studies and library sources and considering the conditions of Iran and the metropolis of Mashhad in terms of green city, 14 quantitative indices were exerted. To this end, the required data for the quantitative indices was gathered by library research from the relevant institutions. Next, the weights of quantitative indices were determined using Shannon's entropy. Then, using the VIKOR method of multi-criteria decision-making, the status of various districts of the metropolis of Mashhad in terms of quantitative indices of green city was determined. Finally, the map of the spatial distribution of quantitative indices was drawn using the ARC GIS software package.   Results and discussion In this study, to analyze the status of the metropolis of Mashhad in terms of green city features, 14 quantitative indices were used. Considering the value of the VIKOR index ranges from 0 to 1, various districts of Mashhad can be classified into five categories; very satisfactory, satisfactory, average, unsatisfactory, and very unsatisfactory in terms of quantitative indices of green city. The results of the current situation of Mashhad showed that in terms of objective indicators of the green city, District 9 of Mashhad metropolis with a value of VIKOR index of 0.056 is in first place, and the seventh region with a value of VIKOR index of 0.433 is in second place. Also, based on the results of this part of the research, District 5, with the value of VIKOR index of 0.969, is in the last rank in terms of objective characteristics of the green city.   Conclusion Similarly, the results of studies by Afshar (2011) and Shabani et al. (2017) on Tehran metropolis are indicative of the unsatisfactory situation of Tehran (the biggest metropolis of Iran) in terms of green city features. Comparing the results of the studies by Afshar (2011) and Shabani et al. (2017) with the present study on Mashhad (the second biggest metropolis of Iran) reveals the necessity for a comprehensive plan toward achieving green cities. It should be mentioned that, due to the specific conditions of Mashhad metropolis and availability or unavailability of the required data, the indices used in the present study are somewhat different from the ones used by Afshar (2011) and Shabani et al. (2017).   Funding There is no funding support.   Authors’ Contribution All of the authors approved the content of the manuscript and agreed on all aspects of the work.     Conflict of Interest Authors declared no conflict of interest.   Acknowledgments We are grateful to all the scientific

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اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    13
  • شماره: 

    4
  • صفحات: 

    61-83
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    43
  • دانلود: 

    9
چکیده: 

As the most complex manufactured structures, cities face excessive population growth. Their expansion has intensified on high-risk sites, and the available evidence also indicates the continuous increase of all types of natural crises in terms of intensity and frequency. Scientific and experimental findings show that the best way to deal with danger is to promote the resilience of settlements in different dimensions (social, economic-livelihood, physical-spatial and institutional); in other words, resilience in both human and environmental dimensions comprehensively. It decreases and increases. This research has evaluated and analyzed the components of resilience in Sari. The method of the present study is applied in terms of purpose and descriptive-analytical and field in nature. The statistical population in this research includes citizens living in the four districts of Sari, and the sample size was determined based on Cochran's formula of 383 people, who were selected from among the statistical population by stratified sampling. The questionnaire is the method of collecting library and field information and its most important tool. For data analysis, descriptive and inferential statistics (one-sample t-test and structural equation modeling) were used by SPSS and Smart PLS software, and entropy and SAW models were exerted. The research results indicate that the situation of the four regions of Sari regarding social components has better conditions than other dimensions of resilience. In terms of institutional components, they have a vulnerable state. According to the entropy model, among the components of resilience, the institutional dimension has the most weight, and the economic dimension has the least weight. Moreover, according to the SAV model, Region 1 ranks first, and Region 3 of Sari ranks last in having the components of resilience dimensions.

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اطلاعات دوره: 
  • سال: 

    1380
  • دوره: 

    24
  • شماره: 

    2
  • صفحات: 

    75-100
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1171
  • دانلود: 

    0
چکیده: 

از پاییز 1375 تا اواخر بهار 1377 مورچه های همزیست با شپشک آرد آلود جنوب از روی درختان مرکبات استان خوزستان (دزفول و اهواز) جمع آوری گردید. در این بررسی 16 گونه متعلق به 12 جنس و 3 زیر خانواده جمع آوری و شناسایی شدند. گونه ها پس از شناسایی به موزه دانشگاه کارولینای شمالی آمریکا ارسال و مورد تایید قرار گرفتند. دو گونه از مورچه های جمع آوری شده به عنوان گونه های ناشناخته (با 3 ستاره) و احتمالا جدید برای دنیا تشخیص داده شد. 2 جنس و 9 گونه برای اولین بار از ایران (با دو ستاره) و بجز Polyrhachis lacteipennis تمام گونه های شناسایی شده برای فون استان خوزستان جدید و برای اولین بار گزارش می شوند. گونه های شناخته شده بقرار زیر می باشند:الف- زیر خانواده Myrmicinae 1- Crematogaster antaris Forel, 1894**2- Teramorium sp.***3-Monomorium destructor (Jerdon, 1851)**4- M.abeillei Ander, 1881**5- Pheidole teneriffana Forel, 18936- Ph. Pallidula Nylander, 18897- Aphaenogaster syriacus Emery, 1908** ب- زیر خانواده Dolichoderinae 8- Tapinoma simrothi Krausse, 1911 ج- زیر خانواده Formicidae 9- Polyrhachis lacteipennis Smith, 183910- Camponotus xerexes Forel, 1904**11- C.oasium Forel, 1890**12- Plagiolepis pallescens Forel, 1889**13- Paratrechina flavipes (Smith, 1874)**14- Lasius sp. Near platythorax**15- Cataglyphis livida (Ander, 1881)16- C. nodus (Brulle, 1832) 

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بازدید 1171

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نشریه: 

نهال و بذر

اطلاعات دوره: 
  • سال: 

    1387
  • دوره: 

    24
  • شماره: 

    1
  • صفحات: 

    215-219
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    892
  • دانلود: 

    188
کلیدواژه: 
چکیده: 

گلرنگ یکی از گیاهان خانواده آستراسه (Asteraceae) است، 250 گونه مختلف این گیاه از اسپانیا تاشمال آفریقا و غرب آسیا تا هندوستان پراکنده شده اند. وجود تیپ های مختلف وحشی که در سراسر کشور پراکنده اند نشان از سازگاری بالای این گیاه روغنی با آب و هوای کشور ما دارد (Daju and Mundel,.1996) .گلرنگ یکی از گیاهان روغنی بومی ایران است. تحقیقات گلرنگ در ایران از سال 1348 و با جمع آوری توده های بومی گلرنگ کشور در مرکز ورامین آغاز شد و به دنبال آن با وارد کردن ارقام اصلاح شده نظیر فریو، ژیلا، نبراسکا وUC1  ادامه یافت. یافتن ارقام لاین های پاییزه و بهاره پرمحصول نظیر L.R.V.51.5, 1I.L.11 ورامین 295، اراک2811 و محلی اصفهان حاصل همین بررسی ها است (Omidi and Ahmadi, 2001).

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بازدید 892

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