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Open Access Article
1 - A Database Selection Method and Migration Model for Big Data
Mohammad Reza AhmadiDevelopment of infrastructure and public services, especially in cloud computing applications, databases and storage techniques in traditional patterns has serious limitations and challenges. Increasing development tools and data services created widespread need for sto MoreDevelopment of infrastructure and public services, especially in cloud computing applications, databases and storage techniques in traditional patterns has serious limitations and challenges. Increasing development tools and data services created widespread need for storing large data processing activities from public, private and comprehensive social networks, the need for data migration to new databases with different characteristics become an inevitable task. In traditional models, digital data were stored in storage systems or in separated databases. But with the expansion of the size and composition of data and generation of large data structure, practices and traditional patterns is not acceptable for new needs and the use of storage systems in the new formats and models are essential. In this paper, we have studied the dimensions of database structure and functions of traditional and new storage systems together with technical solutions for migration from traditional structured databases to unstructured data are presented. At the end, main features of distributed storage systems compared with traditional models and their performance are presented. Manuscript profile -
Open Access Article
2 - Analyzing the Regional and Global Consequences of Syria's Geopolitical Crisis (With emphasis on the crisis of refugees)
hadi zarghaniThe geopolitical crisis, to dispute and and countries conflict and political-spatial groups And political actors To control and seize one or more values And the geographical factor is called. Syrian crisis as a geopolitical crisis, While the sixth year (2017) it passes MoreThe geopolitical crisis, to dispute and and countries conflict and political-spatial groups And political actors To control and seize one or more values And the geographical factor is called. Syrian crisis as a geopolitical crisis, While the sixth year (2017) it passes himself. According to the UN High Commissioner, The worst global crisis is in the past 25 years. . This crisis has many consequences and consequences, In various dimensions to Syria and to regional and trans-regional countries. One of the most important consequences, displaced more than half of the Syrian population of 23 million(About 13.5 million), Inside and outside the borders of this country. The present paper uses a descriptive-analytical approach and utilizes library data to seek to answer this question. The displacement of this massive population inside Syria And their invasion of What a consequence And consequence for them And host countries Has brought. . The findings of the research show that in the regional dimension and outside the region, respectively, countries: Turkey, Lebanon, Jordan, Iraq and Egypt, the European Union (Germany, Austria and Switzerland ...) and the United States, the main host of the Syrian refugees. Apart from the reaction (positive or negative) and the political exploitation of some of these countries (such as Turkey and Jordan), Each of them has somehow been affected by the crisis. . Therefore, in the overall assessment of this paper, the effects of the crisis on host countries in five dimensions: Social, economic, political, security and cultural is Analyze and explain. Manuscript profile -
Open Access Article
3 - Analyzing the factors affecting on the spatial planning in border regions of Iran and Afganistan from the perspective of political geography
Mahmood Vasegh Abbas TabatabaiThe borders of Iran in the recent two centuries have been the arena of conflict and territorial tide that its result in the period of first Pahlavi and modernize of politics conce pts waz the current land of Iran. Iran and Afganistan have about 945 KM common border that MoreThe borders of Iran in the recent two centuries have been the arena of conflict and territorial tide that its result in the period of first Pahlavi and modernize of politics conce pts waz the current land of Iran. Iran and Afganistan have about 945 KM common border that stretched from the Zulficar crater to the Malek siah mountain. There is a lot of external and internal factors that are effective in the frontier zones of this areas. The issue that is analyzing in this article is the impacts of this factors that must be seen in the land use planning of this areas. The research method in this article is library and analytical to answer this question: Wich external and internal factors are effective in the spatial planning in border regions. According to the findings of this article, many factors such as immigration illegal, drugs, terrorism and the presence of western powers are effective on this issue. Manuscript profile -
Open Access Article
4 - Rural migration impact on food security with emphasis on water resources (Case study: villages of Khansar city in Isfahan province)
hamidehsadat aghamiriThe present study was conducted to investigate the impact of water crisis on rural migration and food security in rural place in Khansar. Statistics show that in recent years, the decline in rural water resources has led to an increase in immigration in the area, red MoreThe present study was conducted to investigate the impact of water crisis on rural migration and food security in rural place in Khansar. Statistics show that in recent years, the decline in rural water resources has led to an increase in immigration in the area, reducing the rural farmer's population and affecting the level of production and food security. Accordingly, the main question of this research is whether rural immigration from water resources is a threat to global food security? To answer this question, considering the regional attitude of the research, firstly, the status of rural water resources in these areas and the province was investigated and further the various definitions of food security were evaluated. According to theories and research indicators, 5 villages from 3 districts of central Khansar were randomly selected. Immigration index along with food security has been investigated and due to the close relationship between food security and agriculture, the social and economic conditions of villagers in this section have been considered. This indicator includes the goals and age of immigration, the environmental, economic and social conditions of rural migrants. The results of the study showed that more than 60% of immigration is migratory to rural areas where young people are at the top. Therefore, the decline in workforce in rural society and gender differences due to the high percentage of men migrating to women was the main outcome of the status of water dependent migration in rural areas. According to the results, despite the close relationship between agriculture and food security, the increase in rural migration due to water has reduced the production capacity of the villages and poses a serious threat to food security. This research is a reminder that has been done using descriptive-analytic method and considering the impact of this migration on economic conditions, the study of economic theory in this section is at the forefront. The conclusion of this study is based on the correlation coefficient of Kendall. Manuscript profile -
Open Access Article
5 - Migration crisis caused by short-term droughts in Sistan and Baluchestan Province
Drought is a complex phenomenon that is the definition of it is difficult. Definitions, it is presented in different areas and each of them has different definitions depending on the amount of average rainfall. Since the beginning of the formation of human civilization MoreDrought is a complex phenomenon that is the definition of it is difficult. Definitions, it is presented in different areas and each of them has different definitions depending on the amount of average rainfall. Since the beginning of the formation of human civilization so far, the drought has always been considered one of the natural disasters and catastrophic impact human activities have on. This paper describes a method of analysis to assess the drought and its relationship with the inhabitants of Sistan and Baluchestan Province migration. To understand the different effects on rainfall, water resources, leading to the return of the SPI to be used to evaluate the drought in Sistan-Baluchistan province. Data monthly precipitation (mm), the years 2005 to 1985 for four stations in Sistan and Baluchestan (Zahedan, Zabol Iranshahr, Chharbhar, Konarak) were studied. Results indicate that water shortages in drought affected areas are the result of increased immigration flora. The occurrence of severe in the region, has left the economic and social adverse effects due to the economy's heavy reliance on agriculture people in Sistan and Baluchestan this crisis has led to the phenomenon of origin and demographic balance, the economic, social and ... unbalanced and lead to regional and underdevelopment of the region. Manuscript profile -
Open Access Article
6 - Elucidate counter-urbanization process in Isfahan metropolitan area
Counter-urbanization has been defined with many definitions in research literature as increasing of the small town population in the process of urban expansion and development. This study investigates the counter-urbanization process in Isfahan metropolitan area based o MoreCounter-urbanization has been defined with many definitions in research literature as increasing of the small town population in the process of urban expansion and development. This study investigates the counter-urbanization process in Isfahan metropolitan area based on an exploratory method using the population and immigration data, diurnal commuting, and the immigration motivators. The results show that, during different periods, population growth has been changed from the greater cities’ metropolitan area to the small towns. So that, there is less population growth near the main greater cities during the last decade. Regarding the immigration as well as migration effectiveness over the population, and immigration motivators, it can be said that the most important parameters of small towns’ expansion near the greater cities are better habitation opportunities, and finding better jobs. Furthermore, decreasing the diurnal commuting close to the greater cities shows that small towns, which are farther from the greater city, have more autonomy. In addition, based on polarization reversal model, and population development investigation in metropolitan areas, there are population development from the greater cities’ centre to the periphery area, which is leaded to decrease the population of the main greater city, and increase the population absorption in small towns. Consequently, the urbanization of Isfahan metropolitan area has entered to a counter-urbanization phase. Manuscript profile -
Open Access Article
7 - Experimental modeling of migration in Shekarab active fault system (North Birjand)
Mehdi Yosefi Mohammad Mahdi Khatib Ebrahim GholamiThe Shekarab fault system, located in the north of the Birjand city, has fault scarps parallel to main fault. Due to the structural features, mechanism of fault trends in the region, fault-related folding and the occurrence of the migration from the north to the south a MoreThe Shekarab fault system, located in the north of the Birjand city, has fault scarps parallel to main fault. Due to the structural features, mechanism of fault trends in the region, fault-related folding and the occurrence of the migration from the north to the south at Shekarab fault, modeling is done for the geometric pattern of the fault propagation, which is in accordance with the Shekarab fault zone. In this model, new scarps are formed in the footwall of the previous scarps. According to the results of modeling, the most important factor for creating alternate scarps is the north-south compression in the Shekarab thrust. At each step, by increasing the amount of shortening, the emergence of new faults are observed so that the first thrust is created on the northern side of the Shekarab zone and subsequent faults are created by increasing the amount of shortening up to a maximum of 58%, on the southern side of the zone and on the footwall of the previous faults. In this modeling, the slope of the thrusts is created in four stages of shortening varying between 60-65 degrees, which is comparable with the actual slope of the Shekarab faults of 70 degrees. According to the experimental results, the sequence of thrust creation in each modeling stage is consistent with the sequence of thrust in the Shekarab zone and with the north-south migration of the fault. According to the geometry of thrusts and back-thrust, the model of formation of structures in this fault zone is the foreland breaking sequence model so that the branches of the thrust originate from a point. Manuscript profile -
Open Access Article
8 - The Analysis of Conflict of Tradition and Modernity in Social Novel after Islamic Revolution in Iran
مریم عاملی رضاییSocial Novel is an applicatory area to reflect and recreate social realities in the mirror of literature. The challenge between tradition and modernity is one the themes that is reflected in the Persian literature from the constitutional monarchy and is reflected in an MoreSocial Novel is an applicatory area to reflect and recreate social realities in the mirror of literature. The challenge between tradition and modernity is one the themes that is reflected in the Persian literature from the constitutional monarchy and is reflected in an appropriate manner with social changes of every era. After the Islamic Revolution of Iran, social novel experienced considerable quantitative and qualitative growth and there is few novels which in this time which has not expressed social themes. The main problem of this study is reviewing the conflict of tradition and modernity concepts in social novels after the Islamic Revolution. The purpose of this study is comparative reviewing and comparing of the authors’ approach toward this issue in the three decades from 1360 to 1390 (1981 to 2011). This study is done applying descriptive-analytic method and using library resources. The result of this research shows that in Novels of 1360 to 1370 (1981 to 1991) this conflict is reflected in a clear and manifest manner particularly in objection to industrialization, the material looks of modernity and losing traditions, but in 1370 to 1390 (1991 to 2011) this experience is internalized and is manifested in form of suspicion, wandering, and traditionalism. However, the acceptance of changes of first decade which were regarded as serious challenges in second and third decade shows the flourishing movement toward modernity particularly in city communities and educated group. Manuscript profile -
Open Access Article
9 - Studying the Trends in Fictions Written By Iranian Immigrants
Reza ShajariIn recent decades, Iranian immigration and in particular the migration of the writers and the publication of their works have created a special phenomenon. Literary texts created by those writers and poets who are living abroad have established certain tendencies, trend MoreIn recent decades, Iranian immigration and in particular the migration of the writers and the publication of their works have created a special phenomenon. Literary texts created by those writers and poets who are living abroad have established certain tendencies, trends and particular literary approaches outside the borders of the country. The collective body of literary works created abroad, have been named differently by different critic based on the characteristics and features that they have outlined. The authors’ issues, how they have left the country, how long they have been living abroad, and the content of their works are of great importance in defining and classifying these literary works. Furthermore, different trends can be identified in stories written abroad. In the present article, stories written by Iranian immigrants are analyzed as politics-oriented, identity-oriented, and women's stories. In the '60s up-to-the mid-'70s the politics-oriented stories are the most frequent ones. This trend is emerged by political groups and activists, and focuses on the revolution and the issues surrounding it. From the mid-70s onwards, the identity-oriented trend became the major one. In this trend, themes such as the differences between the motherland and the other-land, and the ways the immigrants encounter the new world are highlighted through the narratives about identity. Also, there were many immigrant female writers who narrated the lives and issues of female immigrants from a feminine perspective. In these stories, the ways in which women face the new world and the issues they encountered in Iran are amongst the main themes. Manuscript profile -
Open Access Article
10 - The development of social identity in the story "Atr-e Sonbol, Atr-e Kaj" Based on the general theory of verbal humor
Fatemeh Mozaffari Navid Firuzi"Atr-e Sonbol, Atr-e Kaj" is a Persian translation of the memoirs of Firoozeh Jazaieri Duma written based on her unique social experience as an Iranian immigrant living in the United States. The current paper aims to examine the components and mechanisms of the humor of More"Atr-e Sonbol, Atr-e Kaj" is a Persian translation of the memoirs of Firoozeh Jazaieri Duma written based on her unique social experience as an Iranian immigrant living in the United States. The current paper aims to examine the components and mechanisms of the humor of mentioned story based on the "General Theory of Verbal Humor". In this method, the variables used to examine a funny narrative are divided into six categories: language, target, situation, narrative strategy, logical mechanism, and Script Opposition. In the present study, which is based on the target variable; It has been shown how Firoozeh, by targeting people outside the group and within the group, introduces appropriate and inappropriate social behaviors that she has encountered and achieves a new and selective identity; An identity that neither alienates her from her past values nor isolates her in the new culture. Her verbal humor can create a group bond between readers of different races, especially female audiences. In addition, in her funny narrative, "target" is higher than "Script Opposition " (variable of laughter). Manuscript profile -
Open Access Article
11 - The Analysis of the political literature in contemporary Iran (Case Study: Political Fiction in Diaspora(
Some contemporary fiction has been published outside of Iran. The reason for the emigration of many writers abroad is directly related to the issue of politics, as well as the way they are present and the subject, theme, background and origin of an important part of the MoreSome contemporary fiction has been published outside of Iran. The reason for the emigration of many writers abroad is directly related to the issue of politics, as well as the way they are present and the subject, theme, background and origin of an important part of the works they have created are political. Political fiction in immigration is found with the support of political groups, and the first examples are published in political magazines, and later writers create works with relative independence from political groups. They have written the narrative of the contemporary history of Iran. The Constitutional Revolution and its Liberal aspirations, the coup d'état 19 August and its endless despair and hopelessness, as well as the Islamic Revolution and various issues surrounding it, including the pre-revolutionary struggles and the process of victory and stabilization of the revolution and the emergence of the Islamic Republic and the Imposed war are of these issues. The main issue of this research is how political fiction literature in migration has evolved. This model, that is, knowing the currents, shows the political and social context of the creation of the work, the focal points of support, the starting point and how the flow spreads and continues. Political fiction seems to begin with citations and revelations about the events and issues surrounding the revolution and the events of the 1980s, and reaches to analytical-critical narratives of contemporary history, especially the revolution and the Islamic Republic. Manuscript profile -
Open Access Article
12 - Improving imperialist competitive algorithm for solving the nodes placement problem in three-dimensional grid wireless sensor networks
Sayed Wafa Barkhoda Hemmat Sheikhi sudabeh mohammadiOne of the basic and important research fields in wireless sensor networks is how to place sensor nodes where by using minimum number of sensor nodes all target points are covered and all sensor nodes are connected to the sink. In this paper, a novel method based on imp MoreOne of the basic and important research fields in wireless sensor networks is how to place sensor nodes where by using minimum number of sensor nodes all target points are covered and all sensor nodes are connected to the sink. In this paper, a novel method based on imperialist competitive algorithm is used for solving the mentioned problem. In the proposed method, a colony can immigrate from a weak empire to more powerful empire. The idea of immigration is inspired from human society in which a human can emigrate from a country to another country. The network is supposed to be a three-dimensional grid network and the sensor nodes can be only placed at cross-points of the grids while the target points can be deployed at each point of three-dimensional space. The simulation results show that the proposed method uses fewer number of sensor nodes than other similar algorithms and has the less running time. Manuscript profile -
Open Access Article
13 - بررسی تاریخی تأثیر توزیع ناموزون فضایی یارانههای کالاهای اساسی بر مهاجرتهای روستایی- شهری در راستای نظام آتی سیاستگذاری در برنامهریزی منطقهای (مطالعۀ موردی: مهاجران روستایی شهر ایلام)
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Open Access Article
14 - A comparative study of the position of international migration in land use planning of countries of destination (Case study: Canada, Germany, Australia and Iran)
zahra torkashvand ابوالفضل عبادیIn the context of the phenomenon of migration, some countries are known as destination or hosts of migration due to various conditions and characteristics. The purpose of this study is to review and recognize the programs and policies of some countries (Germany, Austral MoreIn the context of the phenomenon of migration, some countries are known as destination or hosts of migration due to various conditions and characteristics. The purpose of this study is to review and recognize the programs and policies of some countries (Germany, Australia and Canada) as well as Iran in the field of immigrants and refugees. The method used in this research is descriptive and library method. The results of this study show; Germany, Australia and Canada, according to their territorial, political, economic, social and cultural characteristics, have developed various programs and policies for the exploitation of immigrants and refugees, as a result of which countries (governments and nations) and immigrants and refugees benefit Achieve enough and necessary for them and get closer to their goals. But in Iran, there are no coherent and effective policies and programs at the national level to benefit immigrants and refugees in a desirable way and the immigrants themselves can obtain acceptable living conditions. In Iran, in the field of immigration, the programs are terminal and short-term in order to somehow control the volume of migration and asylum in the country, but there is no coherent and integrated program regarding the long-term effects and feedback. Manuscript profile -
Open Access Article
15 - A New Memetic Model based on the Fixed Structure Learning Automata
M. Rezapoor Mirsaleh M. R. MeybodiMemetic algorithm (MA) is a kind of evolutionary algorithms (EAs) that searches the problem solving space using local search and global search. The balance between global search and local search is one of the key issues in this algorithm. In this paper a new model is pr MoreMemetic algorithm (MA) is a kind of evolutionary algorithms (EAs) that searches the problem solving space using local search and global search. The balance between global search and local search is one of the key issues in this algorithm. In this paper a new model is proposed, called GALA2. This model is combined of genetic algorithm (GA) and object migration automata (OMA), which is a kind of fixed-structure learning automaton. In the proposed model, global search is performed by genetic algorithm and local learning is performed by learning automata. In this model, the Lamarckian and Baldwinian learning models have been used to increase the convergence rate and avoidance of premature convergence, simultaneously. In this evolutionary model, chromosomes are represented by object migration automata for the purpose of using positive effects of evolution and local learning. In order to show the superiority of the proposed model, GALA2 is used to solve the graph isomorphism problem. Manuscript profile -
Open Access Article
16 - Green Cloud Computing with Reduced Energy Consumption in Live Migration Prioritizing Services
Mohammad Rostami Salman GoliToday, the rapid growth in cloud computing resources usage has increased energy consumption in data centers. Green cloud computing goal is to decrease the energy consumption of data centers. In the meantime, service aggregation is a good method to reduce energy consumpt MoreToday, the rapid growth in cloud computing resources usage has increased energy consumption in data centers. Green cloud computing goal is to decrease the energy consumption of data centers. In the meantime, service aggregation is a good method to reduce energy consumption in these systems. Existing aggregation methods with unnecessary migration, the unbalanced workload of hosts, and ignoring the relationship between services may reduce the quality of service and increase energy consumption. Therefore, in this study, by migrating the necessary services based on priority (including the number of children, the level and communication cost of each service), from hosts with the unbalanced workload to hosts that contain partner services, the productivity of available resources is improved and the energy consumption is decreased. Live services migration based on prioritizing and minimizing the number of migrations can also lead to response time decrease and system efficiency increase. The proposed method can lead to an 11.79% decrease in energy consumption, a 12.15% reduction in the number of service migrations, and a 1.55% increase in the number of hosts that have been shut down. Manuscript profile -
Open Access Article
17 - Studying Maturity and Migration Routes Using Two-Dimensional Modeling in a number of Dezful Dam Oilfields
Ashkan Maleki Seyed Ali Moallemi Mohammad Hossein Saberi Mohammad Hassan JazayeriTo the southwest of Iran there are large reservoirs of oil and gas including Jurassic and Cretaceous carbonates, with good source rocks in the succession of the Early Cretaceous and Jurassic. The purpose of this study was to investigate the production, migration and cha MoreTo the southwest of Iran there are large reservoirs of oil and gas including Jurassic and Cretaceous carbonates, with good source rocks in the succession of the Early Cretaceous and Jurassic. The purpose of this study was to investigate the production, migration and characterization of Pabdeh, Kazhdumi, Garru and Serglu source rocks in the study area. For this purpose, burial history and one-dimensional thermal modeling in four wells and two-dimensional modeling in one section for the study area were evaluated using Openuploo software to determine the maturity of layers and hydrocarbon outflow. Comparison of measured vitrinite temperature and reflectance values with model results was used for model calibration. The results of one-dimensional modelling of the burial and thermal history in this study show that the Sergloo, Grove and Kazhdumi formations have reached maturity and have had hydrocarbon outflow, but the Pabdeh Formation has not reached sufficient maturity for hydrocarbon maturation and production. The results of migration model in the studied section show that the two Early Cretaceous and Middle Cretaceous hydrocarbon systems were separated by Kazhdumi Formation and therefore hydrocarbon migration in deeper layers of Kazhdumi was mostly lateral to Abadan plain. The hydrocarbon produced from the Kazhdumi Formation, in addition to ornithologically rearing the upper layers, migrated to the Ilam and Sarvak layers due to the general slope of the layers laterally and toward the Abadan plain. In general, the process of maturation of source rocks decreased from east to west of the study area. Manuscript profile -
Open Access Article
18 - بررسی مقایسهای جایگاه مهاجرتهای بینالمللی در برنامهریزی آمایش سرزمین کشورهای مقصد مهاجرت (مطالعه موردی: کانادا، آلمان، استرالیا و ایران)
Zahra Torkashvand -
Open Access Article
19 - Problems of Specialized Human Resources Educational and Occupational Challenges Narrated by The Ph.D. Graduated
Mohammad Tavakol Akhtar Shiri Saeed SemnanianThe aim of this research was to identify the challenges faced by the PhD graduates, specifically in the areas of work and occupation, as well as the related problems of their education, research, possibilities, and expectations during and after university study. The the MoreThe aim of this research was to identify the challenges faced by the PhD graduates, specifically in the areas of work and occupation, as well as the related problems of their education, research, possibilities, and expectations during and after university study. The theoretical approach in this research was Mertonian, and the statistical population consisted of those who graduated from 16 superior universities in Iran between 2014to2019. They were 16069 out of which 12434 were available through email and received our e-questionnaire. One of the important findings of this survey was that at the job market level the universities were the bigger consumer of PhD holders, employing them more than other sectors such as economic, industry and services. Moreover, female graduates in compare to male had fewer opportunities for employment (54% versus 79%). The respondents complained about salary and job privileges and expressed their inclination to immigrate to other countries (more than 70%). Manuscript profile -
Open Access Article
20 - Unemployment, Uneven Regional Development And Spatial Patterns of Internal Migration in Iran
Rasoul SadeghiInternal migration and movement occur in response to a wide range of factors with different effectiveness. One of the important and key contexts for the formation of internal migration is spatial inequality in facilities, opportunities and development components. In thi MoreInternal migration and movement occur in response to a wide range of factors with different effectiveness. One of the important and key contexts for the formation of internal migration is spatial inequality in facilities, opportunities and development components. In this regard, the article uses the secondary analysis of the 2016 census data at the provincial and county levels to investigate the impact of youth unemployment and unequal regional development on internal migration in Iran. The results showed the spatial clusters of unemployment and underdevelopment in the country and inequality in access to economic and social resources and opportunities on the one hand, and regional differences in migration rates, on the other hand. The highest level of development and the lowest unemployment rate of young people, as well as high immigration in the central regions of the country, especially the capital. In contrast, the western, northwestern, eastern and southeastern border regions have the lowest level of development and the highest unemployment and emigration rates. Therefore, internal migration is a dynamic, multidimensional process that arises from structural conditions and regional inequalities. Manuscript profile -
Open Access Article
21 - A Multi-Objective Differential Evolutionary Algorithm-based Approach for Resource Allocation in Cloud Computing Environment
Saeed Bakhtiari Mahan KhosroshahiIn recent years, the cloud computing model has received a lot of attention due to its high scalability, reliability, information sharing and low cost compared to separate machines. In the cloud environment, scheduling and optimal allocation of tasks affects the effectiv MoreIn recent years, the cloud computing model has received a lot of attention due to its high scalability, reliability, information sharing and low cost compared to separate machines. In the cloud environment, scheduling and optimal allocation of tasks affects the effective use of system resources. Currently, common methods for scheduling in the cloud computing environment are performed using traditional methods such as Min-Min and meta-heuristic methods such as ant colony optimization algorithm (ACO). The above methods focused on optimizing one goal and do not estimate multiple goals at the same time. The main purpose of this research is to consider several objectives (total execution time, service level agreement and energy consumption) in cloud data centers with scheduling and optimal allocation of tasks. In this research, multi-objective differential evolution algorithm (DEA) is used due to its simple structure features and less adjustable parameters. In the proposed method, a new approach based on DEA to solve the problem of allocation in cloud space is presented which we try to be effective in improving resource efficiency and considering goals such as time, migration and energy by defining a multi-objective function and considering mutation and crossover vectors. The proposed method has been evaluated through a CloudSim simulator by testing the workload of more than a thousand virtual machines on Planet Lab. The results of simulation show that the proposed method in comparison with IqrMc, LrMmt and FA algorithms, in energy consumption by an average of 23%, number of migrations by an average of 29%, total execution time by an average of 29% and service level agreement violation (SLAV) by an average of 1% has been improved. In this case, use of the proposed approach in cloud centers will lead to better and appropriate services to customers of these centers in various fields such as education, engineering, manufacturing, services, etc. Manuscript profile -
Open Access Article
22 - A review of the characteristics of immigration literature novels
Somayeh DehghanMigration literature is a new branch of contemporary literature with its own characteristics, which is divided into two parts: fiction and verse, and it exists in every country according to its social and historical developments. The growth and formation of this type of MoreMigration literature is a new branch of contemporary literature with its own characteristics, which is divided into two parts: fiction and verse, and it exists in every country according to its social and historical developments. The growth and formation of this type of literature and the entry of the term "migration literature" into the dictionary of political literature and cultures of the nations of the West is the product of the years after World War I and World War II. In line with the contemporary literary trends of Iran that became popular in Iran after the constitution and especially from the Pahlavi II era, due to the migration of many elites, young people and writers to Europe and America in search of developing education and finding a suitable job and a better future, and also Due to the effects of war and economic disturbances, a wide range of immigrants affected by dual factors took up writing and wrote short and long stories or stories. Among the novels of the authors in question, the selected novel shows the author's style and expression more than his other works. Although writers such as Ismail Fasih have written many of their works on the issue of immigration, this research has been examined in the field of immigration literature. The migration literature has special characteristics, such as dealing with the problems and sufferings of immigrants, which this research has dealt with in detail. In general, by analyzing the selected novels, we have realized that despite the influence of the authors from the thoughts and culture of the West, they are not removed from the past and the culture of the mother country; Therefore, modernity and its conflict with tradition, and the consequences of migration are the main themes of these works. Manuscript profile -
Open Access Article
23 - The Role of Inequalities in Migration from Iran's Border Counties
Valiollah Rostamalizadeh Reza NobakhtThe role of regional and spatial inequalities, especially the role of inequalities in the border areas of the country, has been given less attention in the issue of migration. Although Iran's border areas have strategic importance from economic, social, and political as MoreThe role of regional and spatial inequalities, especially the role of inequalities in the border areas of the country, has been given less attention in the issue of migration. Although Iran's border areas have strategic importance from economic, social, and political aspects, and Ignoring paying less attention to these areas can have irreparable consequences in various sectors. This research aims to investigate the situation of Iran's border regions in terms of spatial inequalities and what effect these inequalities have on migration from these regions. In order to measure the spatial inequality among the border counties, the data of the general population and housing census of 2016 and other related findings have been used. Factor analysis has been used to weight and combine indicators and create spatial inequality. Arc Pro software was used for zoning and stratification of counties based on the dimensions of inequality and migration, and GWR statistical method was used to analyze the relationship between inequality and migration. The results show that inequality is higher in the eastern and southeastern counties compared to other places. Also, 66% of Iran's border counties have a negative migration balance. The geographically weighted regression model shows that 67% of the changes in the net migration variable are explained by independent variables, and based on the average value presented, the population structure factor and the economic factor have the greatest effect on the net migration in border counties. Also, the effectiveness of factors for migration is different in different regions of the country. Manuscript profile -
Open Access Article
24 - Analyzing the Place of Nostalgia in Iranian Immigration Fiction with an Emphasis on Selected Female Authors (Akram Pedramnia, Nasim Wahabi, Fahima Farsai, Fariba Siddiquim)
Mehrzad Matbouei Nejad Ahmad Khatami Mandana MangeliOne of the most important manifestations of migration literature is the component of nostalgia. The basic issue of this research is to answer the question of how such a component is reflected in women's fiction. The number of female Iranian immigrant writers, as well as MoreOne of the most important manifestations of migration literature is the component of nostalgia. The basic issue of this research is to answer the question of how such a component is reflected in women's fiction. The number of female Iranian immigrant writers, as well as the fact that some of them have a style in immigration fiction, shows the importance and necessity of such a study. The purpose of this research is to investigate the place of the nostalgia component in the selected and prominent stories of immigrant women storytellers after the Islamic Revolution, using a descriptive-analytical method. The hypothesis of the research is that nostalgia is one of the most important and significant components of form and content in the investigated works. The results of the research show that nostalgia in the works of AkramPedramnia takes the audience to the atmosphere of the past with a detailed description of the past and this nostalgia reminds of a special person. Another technique that Pedramnia uses to create a sense of nostalgia is image. Nostalgia in Nasim Wahhabi's works is narrated from the aspect of a space - like the space of war. Nostalgia appears in FahimaFarsai's works in a disturbing way for the characters in the story. In the works of FaribaSediqim, nostalgia refers to situations that a person has experienced with his friends and relatives. Nostalgia for objects and places is not seen in Siddiquim's works. The important feature of the reflection of nostalgia in Siddiquim's works is that the nostalgic events are shown in a fluid form of the mind and the narrator talks about the past as if it is happening right now. Manuscript profile -
Open Access Article
25 - A review of the characteristics of immigration literature novels
Mohammad Tala RakhshanMigration literature is a new branch of contemporary literature with its own characteristics, which is divided into two parts: fiction and verse, and it exists in every country according to its social and historical developments. The growth and formation of this type of MoreMigration literature is a new branch of contemporary literature with its own characteristics, which is divided into two parts: fiction and verse, and it exists in every country according to its social and historical developments. The growth and formation of this type of literature and the entry of the term "migration literature" into the dictionary of political literature and cultures of the nations of the West is the product of the years after World War I and World War II. In line with the contemporary literary trends of Iran that became popular in Iran after the constitution and especially from the Pahlavi II era, due to the migration of many elites, young people and writers to Europe and America in search of developing education and finding a suitable job and a better future, and also Due to the effects of war and economic disturbances, a wide range of immigrants affected by dual factors took up writing and wrote short and long stories or stories. Among the novels of the authors in question, the selected novel shows the author's style and expression more than his other works. Although writers such as Ismail Fasih have written many of their works on the issue of immigration, this research has been examined in the field of immigration literature. The migration literature has special characteristics, including dealing with the problems and sufferings of immigrants, which this research has dealt with in detail. In general, by analyzing the selected novels, we have realized that despite the influence of the authors from the ideas and culture of the West, they are not removed from the past and the culture of the mother country; Therefore, modernity and its conflict with tradition, and the consequences of migration are the main themes of these works. Manuscript profile -
Open Access Article
26 - Does creative human capital and environmental pollution have an effect on internal migration?
mohammad saeed zabihidan Vahid Kafili Abbas KhosravaniMohammadsaeed Zabihidan Vahid Kafili Abbas Khosravani Abstract Today, the word creativity has found a very important role in the literature of urban and regional economics. The creativity of an area becomes a factor to attract people to that area. Also, the p MoreMohammadsaeed Zabihidan Vahid Kafili Abbas Khosravani Abstract Today, the word creativity has found a very important role in the literature of urban and regional economics. The creativity of an area becomes a factor to attract people to that area. Also, the phenomenon of migration as an important issue is the concern of many researchers of different sciences; such as economics, sociology, statistics, geography and environment. The reason for the importance of this topic is that immigrants can have different political, economic, social, cultural, environmental, etc. effects on the host society and region. Immigrants who enter a region can bring economic prosperity and capital inflow to a region, or can cause various social and environmental crises. Along with the creativity of the region and migration, the issue of environmental pollution is another important issue in today's world. Therefore, due to the great importance of this issue, in this research, an attempt has been made to investigate the effect of economic and environmental factors on migration, as well as factors affecting environmental pollution in the provinces of Iran. For this purpose, cross-sectional data was used in 2016. Considering the very important relationship between migration and environmental pollution, a model with two equations (net migration and CO2) as a system of simultaneous equations has been designed and estimated with the 3SLS method. The obtained results show that environmental pollution has a negative effect on the amount of migration. The results obtained in this research prove this issue. On the other hand, more immigration to a province, due to the increase in population, causes more pollution in that province. Also, the results show that the provinces that have moved towards industrialization have more CO2 emissions. Manuscript profile
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