ali karimzadeh

In the present study, the transient vibration of a fixed cylinder attached to an elastic piezoelectric splitter plate is examined. The vibration frequency of these systems is a combination of vortex shedding frequency and splitter plate natural frequency. Therefore, Geometric plate and fluid flow parameters that affect the structure’s frequency and dynamic behavior are investigated. The fluid-solid interaction model is developed for the described problem to determine the splitter motion patterns and their effect on the vortex shedding frequency and the estimated piezoelectric output power. The effect of involving parameters such as inlet fluid velocity, density ratio, splitter plate length and stiffness on the dynamic response of the device and the produced power is inspected. A comparison between the data of the present study and those reported in the literature is conducted and great agreement is achieved. Results show that the decreasing of dimensionless Young modulus of plate or increasing dimensionless plate length and density ratio decreases the natural frequency of the system. By increasing the fluid velocity from 1 to 4, 8 and 16, respectively the excitation modes of 1st, 1st and 2nd, first three and first four are activated and higher plate deflections are obtained.

Influence literature, after the efforts of the Supreme Leader, has seriously entered the political literature of the country and research has been done around it. Existing researches, before knowing the nature and what is the intellectual-cultural influence, have considered its meaning and concept as obvious and obvious and have passed it. And have dealt with the solution; While according to the researcher's studies, the principle of what intellectual and cultural influence is has been neglected. From the author's point of view, cultural intellectual influence is a complex issue to the extent that a correct and deep understanding of it may change these strategies and lay a new foundation. To this end, this research uses a descriptive-analytical method to explain the concepts of soft power, soft war, cognitive warfare, etc. to explain the relationship between these concepts and intellectual influence and influence is an attempt by a foreign power to weaken and change the vital values of a society. It explains the survival of a necessary political system. In this regard, any idea that opposes the plan of liberal democracy is labeled as fundamentalist and must be changed through intellectual and cultural influence to an idea that can coexist with liberalism. Projects such as the "Network of Moderate Muslims", the "Network of Young Leaders", etc. have been established in this regard.

The city is a place for activities and various cultural, social, administrative, commercial, and … that functions in which different urban elements and components are organized in an orderly, coordinated, manner with visual and physical values. The most important thing coming to mind when thinking of urban space is identity, and the primary sign of identity of any city or region will be its landscape. The use of monuments and elements in the city can serve as a barrier to the destruction of people’s identity, culture and history. Having taken a descriptive-analytical approach, this research tries to investigate the use of monuments and elements in raising cultural awareness and the extent to which citizens pay attention to such urban elements. First, the relevant concepts and theories were reviewed, which suggested a strong identity, mental and cultural relationship between citizens and the culturally-appropriate monuments and elements. Then, we divided all affecting factors of urban elements into four main groups, and studied them within the limit of the 1st municipal district of Shiraz. Finally, the findings and general suggestions were put forth. To analyze the data collected through an electronic questionnaire, which was distributed in the 1st municipal district of Shiraz and online communities, we used the SPSS software. First, we ran the Friedman hypothesis test followed by the one-sample t-test to investigate the attributes and different groups. The results showed that the elements could have a significant effect on the urban identity. According to the findings, the mental aspect from among different groups and environmental quality, identity as well as metaphorical references from among the indicators were ranked first from the citizens’ point of view.

Recognizing tourist attractions and capabilities with the aim of urban development and promotion of the presence of tourists is of high importance. Tourism-led urban regeneration can be considered as the main urban regeneration approach in the last two decades. Tourism in a strategic position and with the goal of achieving an economic and booming mechanism that can include urban development goals and draw a different face for the city. Tourism-led urban regeneration, by developing basic concepts such as innovative economic issues, finds that the inner context and central core of the cities can confidently benefit from the effects of urban tourism and its beneficial features in the regeneration process. This approach respects the traditional framework and adds new structures to these combinations in accordance with those frameworks. In this way, it represents a content and function with a superstructure of cultural and social issues, and an infrastructure of a fully economic and productive mechanism. Such a perspective brings about a kind of convergence in the purpose and means of urban regeneration. The lack of sufficient research in this regard has caused Iran not to have appropriate design and organization, in spite of the existence of indoor historical sites and urban tourist attractions. As noted earlier, there is little research on tourism-led urban regeneration in Iran. In addition, the frameworks proposed for studying urban tourism have more considered the concepts and methodology of urban tourism. In this way, it is necessary to carry out applied research to study urban tourism in order to explore the principles and criteria for urban regeneration. This research tries to fill this gap and focus on urban tourism by defining the different dimensions of urban regeneration as well as providing a set of principles and criteria appropriate for the urban space and testing them in Zandieh historical complex in Shiraz. The purpose of this research is to identify the tourist attractions in historically regenerated areas. First, a content analysis has been conducted to identify the principles of tourism-based regeneration, and the literature has been reviewed for various definitions, views and theories provided by scholars. Second, using the field method, tourism-led urban regeneration criteria have been verified through urban tourists’ questionnaire in Zandieh regenerated historical complex in Shiraz. The statistical population of the urban tourists in Shiraz city was 4,720,000 people in 1394. Using the Cochran formula, it is found that the sample size included 384/124 people. Therefore, the population of tourists was estimated to be 385 people. In order to increase the accuracy and reduce the functional error, 400 questionnaires were distributed among the tourists. It should be noted that the sampling method in this study was cluster sampling. The urban tourists’ questionnaire was analyzed using SPSS software and Friedman test. The findings revealed that the historical and memorable capabilities are at the first place and the cultural, recreational and environmental capabilities are at the second to fourth place of the prioritizing list. This is a good guide for tourism-led urban regeneration planning in Zandieh historical complex.

Breast cancer is a serious health concern for women. It contributes to about 23% of the cancer cases, and accounts for the second largest number of deaths among all cancers. Expensive and time consuming recognition methods currently available for recognition of breast cancer potentiates the need for improvement of novel, specific and ultrasensitive strategies. Biosensors are sensitive, specific and cost effective procedures. These also display the benefit of quick response due to direct calculation in physiological fluids (saliva, blood, serum, milk, urine etc.) in a non-invasive way. Aptamer-based biosensors for cancer cell recognition have shown advantages of rapidness, simplicity and cost-efficiency over traditional approaches. In this study, by linking DNAzyme and aptamer together, we established colorimetric biosensor for the detection of MCF7 breast cancer cells.  MUC1 and PTK7 aptamers used as specific aptamers to binding to the breast cancer cells. This manner may also evade the modification of DNA and the use of labels, which can intensely rise the cost-efficiency and simplicity of cancer cell discovery. Our results indicated that these aptamers showed good activity for breast cancer cells detection in which in the control cells no activity was observed. Results also indicated that there is a good linear relationship between the cancer cell values and colorimetric signal. Finally, the obtained results indicated a cost effective and conveniently operated approach for cancer diagnosis in future.

Urban regeneration that focusing on tourism was considered as a recent approach in the past two decades, in order to protect and preserve valuable historical contexts. This study has been developed by descriptive - analytical method in order to recognize the impact of urban tourism on regenerating the historical context at local residents' point of view and the collecting data tool was through library studies and questionnaire. The sample size was 360 (n=360) and data are analyzed by using LISRELL software. In this study, four regenerated areas of Shiraz were studied and Zandiye area was chosen by the analytic hierarchy process AHP. The results of questioning the local residents imply the prioritization of the effective dimensions on urban regeneration tourism-led respectively social dimensions with correlation coefficient of 0.97, economic dimensions with correlation coefficient of 0.90, cultural dimensions with correlation coefficient of 0.90 and physical dimensions with correlation coefficient of 0.83.

Ethnic identity, as psychological and mental processes among various ethnic groups, is not a security phenomenon to require careful examination of the security issues. Rather, when it is politicized and is accompanied by a kind of ethnic identity process due to any causes, it turns into an important political issue imposing security implications. This study deals with the context and causes of ethnicity as political process. Then the study identifies the structural and factors leading to the formation of identity among the ethnic groups. It ultimately analyzes the significant consequences of this issue and its relationship with ethnic conflicts and the arousal of security challenges, and designs a model for analyzing ethnic problems.

The story of Khosro and Shirin is one of the late Sassanid tales eras. The subject of that is the love play of Khosro Parviz, the 23rd king of this dynasty with Shirin. This story in the Islamic era has always been the source of poets and mythologists and has developed and changed.Ferdowsi is the first poet who ordered the story of Khosrow's love story with Shirin in Shahnameh. After him, the story was arranged in a more skillful way, highlighting the richness of his story, which was underestimated in Shahnameh, as well as the introduction of Farhad and Shirin's story of love.Almost two centuries after the Nezami, another unknown anonymous poet, Aref Ardebili, composed the love story of Farhad and Shirin, which was still among the people of Ganjeh and Sharvan, and called his "Farhadnameh". In this essay we are going to identify the aspects of the narrative differences in the Farhadamname system with Ferdowsi's Khosrow and Shirin and the Nezami through the analysis and analysis of the main characters of the story including Khosrow, Shirin and Farhad.

The institutionalization of cultural events play an important role in stabilizing approach to urban regeneration and improving environmental quality as a factor for heritage protection, restoration and rehabilitation of physical structures, new design and new functions in line with the previous and the arrival of new structures. The cultural regeneration of a culture as a development strategy is very important in the local and global scale. Since the 1970s, many European cities, some sort of restructuring was unexpected that the reasons may be handling industry and consequently employment, migration, urban middle class to the suburbs, changing patterns of employment, the development of shopping centers outside the cities and increasing dependence on private car ownership. In the 70's decade, the manufacturing sector, followed by urban decline and governments attempt to shift to a service economy, including the factors that cause changes in the theory of politicians in the 80's decade, which for the first time, culture as a tool of urban regeneration and economic problems were caused. Due to concerns of the finance, the arts and creative industries in particular emerged quickly led to economic development. Taking into account this new reality, many cities were forced together in the quest for uniqueness of the cultural, human and physical advantage over their competition to emphasize to other cities. This competition between cities in an effort to attract and deploy them in the field of hi-tech industries, as well as private sector investment and become a central part in national and international tourism and culture reflected. Increased competition led many in the policy with the aim of recreating the index of cultural distinctions from other cities, driven, in which the cultures plays a key role in urban regeneration policies. The main objective of this research is to develop a conceptual framework in order to explain the policies, culture-based urban regeneration and cultural factors affecting urban regeneration. In this regard, this study seeks to answer the question, "What are the cultural policies affecting urban regeneration?" Then, the approaches and cultural policies, and at the end of the components such as the "cultural uses", "urban cultural activities in the public space", "combines urban design creative cultural activities", "protection of cultural heritage" and "cultural tourism" as key measures of culture-based urban regeneration, urban regeneration project has introduced a three comparative tests were in Istanbul, Turkey. In this paper, the strategy of logical reasoning is used as a research strategy. This article is largely descriptive, sowe will attempt to review the concepts of urban renewal, cultural policy effectively introduced and the role and function in culture-based urban regeneration scrutiny and thus the basis for the continuation and identify pathways towards cultural policy affecting culture-based urban regeneration are provided. The skill of reading and studding documents based on the contents of the books, articles and documents as tools for research in relation to urban regeneration projects in the study sample were used. Finally, examples of effective components of the solutions culture-based to successfully achieve urban regeneration projects.

Security in cyberspace is the function of two key elements: human and cyberspace. The actions and interactions of these two factors lead to the creation of a threatening environment that constitutes a wide variety of dimensions in the field of security. Meanwhile, dealing with the issues related to culture in cyberspace has a key role in raising public awareness and enhancing psychological security in the community. Hence, the present study has been conducted to examine the impact of cyberspace on the psychological security of college students as an important and influential stratum in the society. The research sample included 149 students from Islamic Azad University and the instruments were the Maslow psychological security questionnaire and a researcher-made questionnaire. The utilized statistical analyses were one-sample t-test, analysis of variance and histograms which were conducted using the SPSS software. Based on the results, the political, economic, cultural and psychological dimensions of cyberspace impact on psychological security.

As cited in the constitution of the Islamic republic of Iran, it's one of the responsibilities of the government to provide appropriate housing for the people of Iran. The main aim of current study was to assess satisfaction rate of a Mehr housing residents in Fars province, southwest of Iran. Randomly selected heads of 100 households residents of Abadeh Mehr housing for at least 1 year were asked a couple of questions about characteristics of households, employment status, level of satisfaction with indexes of the present accommodation, social quality rate of the complex, urban access situation, and satisfaction about general aspects of Mehr housing. Residents were generally satisfied with the security status and accessibility to the public services of neighborhood. Most of the residents stated that their housing problem has been resolved by the Mehr housing. In contrast, poor access to city center as well as public transportation services and inappropriate cultural status were reported as the main drawbacks of the site.

The main objective of this paper is to study and analyze the ontology and nature of Islamic Awakening and its impact on power relations in the international system, at two regional and international levels. The main question in this research is “which level of international system is or will be changed by Islamic Awakening?” In other words, “will Islamic Awakening cause the international system to change, or will it cause a change within the international system?” The main hypothesis in this research is “Islamic Awakening has made a change in regional and transregional inter/ intra-state power relations. If the policy of hijacking Islamic Awakening and making crisis in Syria by the West were not like a scar on the body of Islamic Awakening, it would entail a structural change in the regional and transregional relations and systems. Anyway, the regional and internal power formation in the Middle East is experiencing a period of transition towards stability. Therefore, Islamic Awakening, along with its internal and peripheral properties cause the formation of a new bloc of powers, which will cause a change in the power relations (unjust distribution and formation of new allies) in the international system. The methodology of this research, which is historical-analytical and descriptive-explanative, adopts a combination of interdisciplinary concepts in disciplines like strategic studies, analysis of foreign policy, comparative policy and national security policy-making, and the issue of human rights. The paper also utilized library sources, including books and articles, as well as Internet sources.

This study investigated the epidemiology of drug abuse among high school students in Kerman.

This was a cross-sectional study on a randomly selected sample of 652 first and second grade high school students (256 boys, 396 girls) in Kerman. They were informed that their answers would be classified and nameless before they filled questionnaires. Schools and classes were selected using stratified sampling method.

From total 652 students participated in this study, 39.2% (256) were boys and 60.7% (396) were girls. Most of the students had information about opium (70.7% of boys and 79.8% of girls), and then alcohol (55.9% of boys and 53.9% of girls). Most offered substance to the students was alcohol (25% in boys and 12.4% in girls). The most effective encouragement for using drugs was through their friends (39% in boys, 16.9% in girls). The most used drug was alcohol among boys (11.4%) and sedative tablets among girls (12.2%). Boys preferred to use drugs in wedding ceremonies (11.3%) but girls proffered their houses (4.8%). The first reason for using drugs was socializing with unsavory friends (29.4%) and the second one was domestic problems (21.4%).

The results of this study indicated dangerously increase of drug abuse among teenagers, who are the future of the society. If these results could be generalized, authorities must think of serious solutions for this rising problem.