List of Articles covid-19

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  1 - Evaluating the components of Iranian healing gardens with emphasis on the presence of young elderly during the Covid-19 epidemic from the point of view of experts and elderly audiences (Case study: Historical gardens of Shiraz)
  Mohammad Ali Rahimi Negar Fotouhi
  This study conducted during the covid-19 epidemic indicate that exposure to nature is considered effective in reducing stress, mental-emotional well-being and, more generally, in improving people's psychological performance. In other words, people who were exposed to op More

  This study conducted during the covid-19 epidemic indicate that exposure to nature is considered effective in reducing stress, mental-emotional well-being and, more generally, in improving people's psychological performance. In other words, people who were exposed to open green spaces during the epidemic had better psychological performance than others. The young elderly, who are a special group of the society, are not separated from this category and have had more problems than other groups of the society due to being quarantined and separated from other people. On the other hand, Iranian historical gardens are considered part of the cultural-historical identity of the people, and considering the problems created in this era, they can be used as a place for the presence of the young elderly, so that an effective step can be taken in establishing their peace. The purpose of this article is to present an evaluation between the opinions of young elderly people and experts regarding the dimensions of presence of young elderly people in urban environments. Therefore, at first, through the fuzzy Delphi method, the effective components in the attendance of the elderly in three physical, semantic and social dimensions were selected in Iranian healing gardens, and then they were evaluated using the EHP method. The results indicate that there are differences between the views of these two groups regarding the components of attendance of the young elderly. The experts consider "the components of the physical dimension, the components of the semantic dimension and then the components of the social dimension" to be effective in the attendance of young elderly people to Iranian gardens (during the Covid-19 pandemic). This is despite the fact that elderly people have considered "semantic dimension components, social components and then physical dimension components to be effective in attendance" respectively. Manuscript profile
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  2 - The crisis of the spread of Contagious diseases and the role of national aviation in its containment
  Mehdi Aliyari
  The international community was for more than three years embroiled in a health-biological catastrophe caused by Cuvid-19 disease, which has probably spread due to the inherent speed of air transport and has seriously endangered the health of the world's people and unpr More

  The international community was for more than three years embroiled in a health-biological catastrophe caused by Cuvid-19 disease, which has probably spread due to the inherent speed of air transport and has seriously endangered the health of the world's people and unprecedently reduce or stopped all activities, including air transport activates around the world and sent many people into the jaws of death. Undoubtedly, civil aviation has long been recognized as the fastest means of transportation and commercial transfer within and beyond national borders and it has often been used as a means of appeasing people, especially in providing relief to communities in distress, whether natural disasters, famines, diseases, or wars. In other words, air transport has played two opposite roles in this type of crisis in the last two decades in two different directions: First - to accelerate the transmission of epidemic and pandemic diseases; Second, to play a positive role in managing and controlling disease due to having a previous plan for the readiness and sustainability of global aviation in a critical situation. This paper seeks to explain the above duplicate with analytical and descriptive view with library and field method in the context of international aviation law. it seems civil aviation effects on control and outbreak of Contagious diseases Manuscript profile
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  3 - Examining the relationship between conservative reporting practices and company performance in the capital market during the COVID-19 pandemic period
  Malektaj Maleki Oskouei Mohammad  Hassani Saeed Mirzakhani
  Purpose: This research examines the relationship between conditional and unconditional conservative reporting and performance (stock performance, excess performance, abnormal performance) of companies in the capital market during the COVID-19 pandemic. Methodology: Thi More

  Purpose: This research examines the relationship between conditional and unconditional conservative reporting and performance (stock performance, excess performance, abnormal performance) of companies in the capital market during the COVID-19 pandemic. Methodology: This research is descriptive in nature and applied in terms of purpose. Since the variables in this study are analyzed through historical data, it falls into the category of descriptive and post-event studies. This research involved formulating two sets of hypotheses and selecting 110 companies through a comprehensive population screening for an 8-year period from 2014 to 2021. The research variables were collected and analyzed using EViews 10 statistical software. Findings: The results of the first set of hypotheses suggest that the COVID-19 pandemic weakens the relationship between conditional conservative reporting linked to news and the stock performance of companies but strengthens excess performance and abnormal performance. The results of the second set of hypotheses indicate that the COVID-19 pandemic strengthens the relationship between unconditional conservative reporting, independent of news, and stock performance of companies but has no impact on excess performance and abnormal performance. Originality: This is the first study in Iran to investigate the relationship between different types of conservative reporting by companies and stock performance during the COVID-19 pandemic. Additionally, this research expands the literature on the relationship between conservatism and stock performance. Manuscript profile
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  4 - Examining the impact of the Corona epidemic on the capital market price index in Iran
  Masoumeh dehbashi
  Purpose: The spread of the corona virus has led to negative reactions of financial markets in different countries and the fall of indices. The purpose of this research is to investigate the stock price index in selected groups of the capital market in Iran in this perio More

  Purpose: The spread of the corona virus has led to negative reactions of financial markets in different countries and the fall of indices. The purpose of this research is to investigate the stock price index in selected groups of the capital market in Iran in this period and provide a model to predict the index.Method: In this research, using the panel data regression method using Arch. GARCH has been used to investigate the stock price index in twelve selected groups of stocks with twelve different hypotheses in 189 companies in a two-year period (2008-2018).Findings: The results showed that Corona has a negative and significant impact on the price index of all groups except the pharmaceutical group. Also, vaccination has had a negative and significant effect on the price index of most groups. However, this factor did not have a significant effect on transport, communication devices, multi-field holdings, basic metals, and also technical engineering services ultimately. This means that the spread of this disease and its results, such as the number of deaths, have had major consequences on the return of the capital market in Iran. Manuscript profile
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  5 - Re-creating the design of the public space of the city in the era of the Corona epidemic
  Fereshteh Kafinia
  Background and Objective: With the beginning of the diagnosis and spread of the corona virus in the beginning of 2020, the negative effects on urban communities have been revealed, as a result of which, despite the establishment of rules to prevent the spread of this vi More

  Background and Objective: With the beginning of the diagnosis and spread of the corona virus in the beginning of 2020, the negative effects on urban communities have been revealed, as a result of which, despite the establishment of rules to prevent the spread of this virus, the presence of citizens in urban public spaces has been minimized. Is. Humans must return to urban spaces in order to continue their lives, as a result, it is necessary to take plans and actions for a new reading of the design of public spaces, with an emphasis on minimizing the risks of the spread of the Covid-19 virus and observing social distance. Material and Methodology: The current research was conducted with a cognitive-meta-analytical method and a theoretical and theoretical approach and library studies. Findings: The purpose of this research is to verify the components of resilient and lively public space from Matthew Carmona's point of view and to investigate the effects of the corona virus on each of the components in the urban space. Discussion and Conclusions: Based on this, the components of the urban space from Cremona's point of view include (physical, functional, social, visual, perception and time components) which the covid 19 virus respectively causes effects such as (widening of sidewalks, biophilic design) buildings and... in the physical dimension), (prohibition of automobiles in some streets and creation of two-wheeled spaces, the idea of a 15-minute city and... in the functional dimension), (creation of social distance, closure of gathering centers, etc.) .. in the social dimension), (creating a harsh and cruel face in the city due to the lack of people in the urban space and the closure of ceremonies and rituals, etc.) in the visual dimension, (the appearance of violence, fear, despair, etc.) in the dimension of perception) and (decreasing the duration of citizens' presence in traffic and parks, etc. in the dimension of time). In general, this phenomenon, like any other phenomenon, has many positive and negative consequences that this epidemic can be considered an opportunity to reconsider the design of cities for better preparation for future crises. Manuscript profile
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  6 - The study of improving the warning system of the Covid-19 virus by using the sociological capacities of sports
  Mohammad Hassan Ghazli Leila Jamshidian Mehrzad Moghdasi Moghdasi
  Objective: The purpose of this research was to study the improvement of the Covid-19 virus warning system by using sports capacities. Methodology: The current research method was mixed. The statistical population of this research included all experts in the field of spo More

  Objective: The purpose of this research was to study the improvement of the Covid-19 virus warning system by using sports capacities. Methodology: The current research method was mixed. The statistical population of this research included all experts in the field of sports from different groups, including physical education professors, managers of sports clubs, sports managers, athletes, trainers and managers of sports sites. The data collection tool included semi-structured interviews and a researcher-made questionnaire. In order to check the data of the present research, the sign test and structural equations were used. Results: The results of this research showed that the factors affecting the improvement of the Covid-19 warning system by using sports capacities include 4 general factors, including factors related to sports organizations, factors related to sports clubs, factors related to sports sites and factors related to It is for athletes and coaches. The results showed that the status of the warning system in sports in the field of sports organizations and sports clubs was unfavorable from the point of view of the research samples. The results also showed that the status of the warning system in sports in the field of sports sites and athletes and coaches was favorable. Conclusion: Among the factors identified, the factors related to sports organizations are the most important factors to improve the warning system regarding the Covid-19 virus by using sports capacities. Keywords: notification, warning, Covid-19, sports. Manuscript profile
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  7 - Modeling Investor Behavior Patterns in Choosing a Stock Portfolio During the Covid-19 Epidemic
  Saeed Harivandi َAhmad Ahmadi Mahmoud Lari Dasht Bayaz
  10.30486/fbra.2023.1999307.1235
  Abstract: The main goal of this research is to investigate the effects of social crises on the decision-making process of shareholders. The current research has focused on modeling the behavior patterns of investors in choosing a stock portfolio during the outbreak of t More

  Abstract: The main goal of this research is to investigate the effects of social crises on the decision-making process of shareholders. The current research has focused on modeling the behavior patterns of investors in choosing a stock portfolio during the outbreak of the Corona virus. The required data was collected through previous studies and interviews with stock market experts. Also, in order to present the model, the foundation data method was used. The results of open coding showed that 45 main concepts in the form of causal conditions, contextual conditions, intervening conditions, central categories and consequences, in order to explain the model of investors' behavioral tendencies in choosing a stock portfolio during the outbreak of the Corona disease in the market. There are Iranian stocks, the most common of which are the behavioral tendencies of following the crowd, under-reacting, paying too much attention to rumors, short-sightedness, tendency effect, innovation and loss aversion. By using selective coding, a paradigmatic pattern of investors' behavioral trends in choosing a stock portfolio during the outbreak of the Corona disease in the Iranian stock market was designed so that 13 concepts are causal conditions, 10 are background conditions, 10 are intervening conditions, 7 are core phenomenon, and 5 are the consequences of investors' behavioral biases in choosing a stock portfolio during the mentioned period in the Iranian stock market.This research has examined the behavioral patterns of investors in a specific period (coronavirus outbreak) and presented a model that can be extended to other social crises. Manuscript profile
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  8 - Challenges of mothers of Children with Autism Spectrum Disorder in the Covid- 19 pandemic
  Maryam Khakrangin mansour fathi Aliye Shahrokhi
  10.30486/jsrp.2022.1953510.3383
  This study aimed to investigate and to deeply understand challenges of mothers with autism children in the encountering of Covid-19 epidemic. The current study applies qualitative method. Purposive sampling and information saturating criteria is utilized in this study. More

  This study aimed to investigate and to deeply understand challenges of mothers with autism children in the encountering of Covid-19 epidemic. The current study applies qualitative method. Purposive sampling and information saturating criteria is utilized in this study. Data were gathered on semi-structured depth interviews in 2022 year with fourteen mothers who had had an autism child in Tehran. The trustworthiness of this study was evaluated by peer reviews and group member checks. Thematic analysis was used for data analysis. Challenges of mothers were categorized in five main themes and Seventeen sub themes. Main themes include: The cycle of failure, increased symptoms of the disorder, increased roles and more resentment of the mother, lacks of support and pressure of Corona etiquette were the causes of stress and aggravation of maternal problems. This research showed that a family with child autism involves severely financial costs and they have to spend a lot of time and energy. family members suffer from annoying child behaviors and society reactions and they even have had difficulty in doing routine. In addition, Challenges related with covid-19 pandemic including Hygienic protocols and quarantine restrictions have made the situation worse than before. Therefore, seeing the special needs of families with autism children in social policy, providing services of psycho-social support for this group of families in the face of crises, raising public awareness about autism and developing social services to reduce problem is essential for promoting family resilience. Manuscript profile
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  9 - Study of the experience of non-mourning in the survivors of Quid 19 in Hamadan
  Anvar Dastbaz zahra zarei Omid Moradi Jalil Sahabi
  10.30486/JSRP.2022.1949731.3325
  Abstract Losing a family member is the biggest crisis a person has to face. Due to the quarantine conditions and the lack of mourning and emotional evacuation, and due to the fact that mourning is a social reaction, the aim of this study was to investigate the partici More

  Abstract Losing a family member is the biggest crisis a person has to face. Due to the quarantine conditions and the lack of mourning and emotional evacuation, and due to the fact that mourning is a social reaction, the aim of this study was to investigate the participants' experience of mourning after the death of a family member due to coronary heart disease. In this research, descriptive phenomenological qualitative research (lived experience) has been used to collect and evaluate information about the experience of mourning. Twelve participants who experienced the death of a family member were selected by purposive sampling method and data collection was continued through in-depth interviews with them until the data reached saturation. Data analysis and interpretation were performed by Colaizzi method and phenomenological approach. After analyzing the results, four main clusters and ten sub-clusters were extracted. The results of this study confirm that the lack of mourning in coronary heart disease survivors has had significant consequences. Manuscript profile
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  10 - The Effect of Covid-19 Disease on the Mental Health and Attendance of Urban Planning Students: A Case Study of Students of Islamic Azad University of Mashhad
  nadia arbab Toktam Hanaee
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  11 - Presenting a data mining model based on sustainable development index in the urban management of Tehran metropolis affected by the covid-19 epidemic.
  Abbas Maleki sadegh abedi Alireza Irajpoor
  By applying the restrictions caused by the Covid-19 pandemic, it seems that changes in the concentrations of pollutants CO, O3, NO, NO2, SO2, PM2.5, PM10 and AQI can be seen in the periods before and after the epidemic. Therefore, the changes of air pollutants and traff More

  By applying the restrictions caused by the Covid-19 pandemic, it seems that changes in the concentrations of pollutants CO, O3, NO, NO2, SO2, PM2.5, PM10 and AQI can be seen in the periods before and after the epidemic. Therefore, the changes of air pollutants and traffic restrictions are investigated as one of the sub-categories of environmental indicators of sustainable urban development in the period of 2018/01/21 to 2022/03/20 in the stations under the supervision of Tehran city. First, the data is collected, processed and cleaned. Machine learning methods including decision tree, random forest, support vector machine, Bayesian network and perceptron neural network are applied to select the effective features using the particle swarm optimization method. Investigations showed that the prediction model using decision tree and random forest had the best performance for both precision and recall criteria. The results of the research showed that the concentration of pollutants in the period of Covid-19 compared to before, is increased in some stations and decreased in others, and also the application of traffic restrictions during the epidemic did not have a significant and noticeable effect in reducing the concentration of air pollutants. Also, by examining the trend of deaths during the epidemic period, it was found that the decrease or increase of pollutants has no significant relationship with the trend of deaths caused by Covid-19. Manuscript profile
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  12 - Comparison of the impact of Covid-19 on financial restrictions and dividend payment policy of government and non-government companies of Tehran Stock Exchange
  Fatemeh Mehralian Amir Mohammadzadeh
  Abstract: The purpose of this research is to investigate the impact of the outbreak of the Covid-19 disease on the financial restrictions and dividend payment policy in government and non-government companies admitted to the Tehran Stock Exchange. The research metho More

  Abstract: The purpose of this research is to investigate the impact of the outbreak of the Covid-19 disease on the financial restrictions and dividend payment policy in government and non-government companies admitted to the Tehran Stock Exchange. The research method is descriptive-correlative in terms of its applied purpose and in terms of its nature and method, and the data collection method is library and archival. The statistical population of this research includes all the companies accepted in the Tehran Stock Exchange from 2016 to 2021 and according to the considered conditions and limitations, 151 companies were selected as the statistical sample of the research. By using two multivariable regression models and with the help of a combined data model, the research hypotheses were tested and the results showed that the outbreak of the Covid-19 disease has a positive and significant effect on the financial limits of the companies admitted to the Tehran Stock Exchange, as well as the spread of Covid-19 has had a negative and significant impact on the dividend payment policy of companies listed in the Tehran Stock Exchange. The extent of the impact of the outbreak of the Covid-19 disease on the financial restrictions and dividend payment policy of government and non-government companies of the Tehran Stock Exchange has been different. Manuscript profile
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  13 - COVID-19 and the Significant Increase in Suicide Rate in Iran
  Mohaddeseh Asgharian hasan hajitabar firozjaee Mehdi Esmaeeli
  10.30495/jcld.2023.1997160.1082
  Receive Date: 2023/06/25                    Revise Date: 2023/08/29                  &nbsp More

  Receive Date: 2023/06/25                    Revise Date: 2023/08/29                   Accept Date:  2023/09/10AbstractThe main aim of this research is the recognition of effective causes and factors in increase of suicide and offering approaches in prevention of suicide in period of coivd-19 and post covid-19 in Iran. In this research, the cases of dead people were surveyed in Alborz province in 1400 and information related to suicides was extracted from the forensic medicine files. Researches then contacted with the families to survey the causes of suicide and complete questionnaires to collect the required information. Data was analyzed using descriptive analysis statistics to determine the frequency of causes, risk factors and suicide methods. This results showed that 180 cases out of 260 successful suicides were male and 80 cases were female. The most common suicide age was the third decade of life and most statistics of suicides were among individuals with elementary education. In 38 percent of cases, the cause of suicide was unknown; but where the cause was identified, the most common cause was mental disorders. Overall, hanging with 45.5 percent was the most common method of suicide. The most common method among male was hanging and among female was poison consumption that there was significant relationship between method of suicide and gender. Self-immolation was in high rate in both gender and involved 35 percent of female. The covid-19 pandemic has been significantly associated with increasing suicide rates in Iran, especially between young men and people with lower education. Emphasizes on providing psychological and economic protective programs focused on societies at-risk is necessary in confronting with this worried increase. Manuscript profile
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  14 - Examining civil Responsibility and Method of Compensation caused by the Fault of the Government in the Spread of the Covid-19 Virus
  Mojtaba Maghsoodi Hamid Soleymani
  10.30495/jcld.2023.1979374.1047
  The spread of the Covid-19 virus at the end of 1398 and many damages it caused to individuals is an important issue that requires a special examination about the role and extent of the government's fault in the spread of this disease. In the current research, an attempt More

  The spread of the Covid-19 virus at the end of 1398 and many damages it caused to individuals is an important issue that requires a special examination about the role and extent of the government's fault in the spread of this disease. In the current research, an attempt has been made to investigate the literature of Shia jurisprudence and internal law, with a look to international law, the different dimensions of the government's civil responsibility due to the fault in the spread of the disease of Covid-19 and the extent of the government's responsibility in compensating the damages caused by the fault of the government in the spread of this virus. The following article, in a descriptive and analytical method by using the documents and library resources, while explaining the covid-19 and the government's responsibility, examines the civil responsibility of the government, its scope and method of compensation caused by the government's fault in the spread of the covid-19 virus. Examining the Shia jurisprudence sources and internal law, shows that there are several foundations and documents for the civil responsibility of the government, due to the fault in the spread of the corona virus and regarding the extent of the government's responsibility, considering the lack of separation between administrative and sovereign acts for the government in Jurisprudence, contrary to internal laws, while occupying government’s fault and damages caused by the government's fault about the victims of the Covid-19 virus, the rule of fairness is that each of the government and the injured victims are responsible to the extent of their fault and If none of them are guilty, the compensation is from the treasury. Manuscript profile
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  15 - The Effectiveness of Virtual Happiness Training With a choice Theory on Hope and Anxiety Covid-19 of Female Teachers in Coronavirus Epidemic
  mehdi shomaliahmadabadi atefe barkhordariahmadabadi
  The aim of this study was The Effectiveness of Virtual Happiness Training With a choice Theory on Hope and Anxiety Covid-19 of Female Teachers in Coronavirus Epidemic. This study was a quasi-experimental study with pre-test and post-test design and control group.The sta More

  The aim of this study was The Effectiveness of Virtual Happiness Training With a choice Theory on Hope and Anxiety Covid-19 of Female Teachers in Coronavirus Epidemic. This study was a quasi-experimental study with pre-test and post-test design and control group.The statistical population included female teachers with Covid-19 anxiety in Ardakan in 1399. By voluntary sampling method, 20 people were selected as a sample and randomly replaced in two groups of 10 experimental and control. Participants answered the virtual questionnaires of coronary heart disease Alipour et al (2020) and Omid Snyder (1991) in the pre-test, post-test stages. The intervention group received the Virtual Happiness Training based on Selection Theory in 8 one-hour sessions and two sessions per week, while the control group didn’t receive any intervention during the study. Research data were analyzed by multivariate analysis of covariance at the significance level of 0.05. The results showed that in the post-test group, the mean scores of Covid-19 anxiety were significantly reduced (p < 0.001) and the mean scores of hope were significantly increased (p < 0.001). It is suggested that the effect of virtual happiness education based on choice theory be considered as an effective intervention method in reducing Covid-19 anxiety and improving hope. Manuscript profile
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  16 - The effect of lifestyles on social control of Covid‌19 virus outbreak in the city Bandar Mahshahr
  اعظم خطیبی Farshad Alenaser
  The spread of Covid-19 created social panic in the world and the resulting irrational behaviors affected the lifestyles of people in such a way that the social health of the society was threatened. Based on this, the aim of the research was Survey the impact of lifesty More

  The spread of Covid-19 created social panic in the world and the resulting irrational behaviors affected the lifestyles of people in such a way that the social health of the society was threatened. Based on this, the aim of the research was Survey the impact of lifestyles on the social control of the spread of Covid-19 in the city of Bandar Mahshahr. That is, it seeks to answer the question of whether lifestyles affect the social control of the spread of Covid-19 in the city of Bandar Mahshahr. What is the difference in their effectiveness? Durkheim and Chris' theories of social control and the theories of lifestyles of Weber, Simmel, Veblen, Giddens-Wilken, Sobel and Cockerham and Alcock were used. The research method is descriptive-analytical with an applied purpose. The statistical population was citizens 20 years old above Bandar Mahshahr city. The sample size was determined using the Cochran's formula of 384 people. A researcher-made questionnaire with face validity and reliability of 0.756 was used for data collection. The results of regression correlation showed that unhealthy and healthy lifestyles had more explanatory and predictive power than other lifestyles in social control of the prevalence of virulence 19 and the Leven test showed that unhealthy lifestyle with direct impact -0.756 and healthy lifestyle with total impact -0.429 have had the most impact. In order to encourage a healthy life, it is necessary to plan by teaching a suitable model for all unpredictable crisis situations. Manuscript profile
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  17 - The effect of lifestyles on social control of Covid19 virus outbreak in the city Bandar Mahshahr
  Azam Khatibi Farshad Alenaser
  10.30495/uss.2023.709648
  The spread of Covid-19 created social panic in the world and the resulting irrational behaviors affected the lifestyles of people in such a way that the social health of the society was threatened. Based on this, the aim of the research was Survey the impact of lifestyl More

  The spread of Covid-19 created social panic in the world and the resulting irrational behaviors affected the lifestyles of people in such a way that the social health of the society was threatened. Based on this, the aim of the research was Survey the impact of lifestyles on the social control of the spread of Covid-19 in the city of Bandar MahshahrDurkheim and Chris' theories of social control and the theories of lifestyles of Weber, Simmel, Veblen, Giddens-Wilken, Sobel and Cockerham and Alcock were used. The research method is descriptive-analytical with an applied purpose. The statistical population was citizens 20 years old above Bandar Mahshahr city. The sample size was determined using the Cochran's formula of 384 people. A researcher-made questionnaire with face validity and reliability of 0.756 was used for data collection. The results of regression correlation showed that unhealthy and healthy lifestyles had more explanatory and predictive power than other lifestyles in social control of the prevalence of virulence 19 and the Leven test showed that unhealthy lifestyle with direct impact -0.756 and healthy lifestyle with total impact -0.429 have had the most impact. In order to encourage a healthy life, it is necessary to plan by teaching a suitable model for all unpredictable crisis situations.   Manuscript profile
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  18 - Investigating the Asymmetric relation between the Global Crude Oil Market and Iran's Capital Market during the Covid-19 Pandemic
  Abbas Memarzadeh
  10.30495/ecomag.2023.2000062.1089
  The Covid-19 pandemic has negatively affected the world economy, especially the crude oil industry, due to the decrease in crude oil demand, quarantine, and uncertainty related to the global economic recession, and at the same time, the price war between Saudi Arabia an More

  The Covid-19 pandemic has negatively affected the world economy, especially the crude oil industry, due to the decrease in crude oil demand, quarantine, and uncertainty related to the global economic recession, and at the same time, the price war between Saudi Arabia and Russian. In this study, using weekly data from March 2020 to September 2021, which coincides with the outbreak of the Covid-19 disease in the world, the asymmetric effects of crude oil price changes on Iran's capital market will be investigated. To check the assumptions of this research and verify the long-term nonlinear relationships, the boundary test approach is used and the long-term and short-term asymmetric coefficients are estimated simultaneously with the NARDL_ECM model. Also, the rate of government treasury bonds, the number of confirmed cases and the value of retail transactions have been used as control variables. The results show that the positive oil price changes have a stronger significant positive effect on the Iranian capital market than the negative changes. This point shows that when the global crude oil is increasing, buying shares can be profitable for market participants. In addition, due to the weak and insignificant correlation of the capital market with the negative oil price changes, when the price is falling due to unforeseen events such as the epidemic of Covid-19, market participants should avoid excitement and negative emotions in selling shares. Manuscript profile
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  19 - یادگیری خودهدایتی و خودمختار درارتباط با استفاده از فعالیت های مبتنی بر فناوری در آموزش از راه دور
  Soraya Raeisi
  10.30495/ttlt.2023.707864
  امروزه، فناوری بخشی جدایی ناپذیر از زندگی مدرن است و ارتباط تنگاتنگی با یادگیری یک زبان جدید در هر زمینه ای دارد. این مطالعه به بررسی خودهدایتی و خودمختاری دانشجویان ایرانی زبان انگلیسی در آموزش از راه دور پس از همه‌گیری بیماری کروناویروس 2019 (COVID-19) می‌پردازد. این More

  امروزه، فناوری بخشی جدایی ناپذیر از زندگی مدرن است و ارتباط تنگاتنگی با یادگیری یک زبان جدید در هر زمینه ای دارد. این مطالعه به بررسی خودهدایتی و خودمختاری دانشجویان ایرانی زبان انگلیسی در آموزش از راه دور پس از همه‌گیری بیماری کروناویروس 2019 (COVID-19) می‌پردازد. این مطالعه مبتنی بر پرسشنامه بر روی 76 دانشجوی زبان انگلیسی با استفاده از سه پرسشنامه بسته برای ارزیابی فعالیت های مبتنی بر فناوری (TBA) مورد استفاده دانشجویان انجام شد. همچنین، ده دانش‌آموز به‌طور تصادفی انتخاب و در مورد نگرش‌هایشان نسبت به نقش TBA در یادگیری از راه دور و بهبود مهارت‌های زبان انگلیسی مورد مصاحبه قرار گرفتند. نتایج نشان داد که گوش دادن به صدای ضبط شده معلم (امتیاز: 4.81)، 2) استفاده از فرهنگ لغت یا مترجم (امتیاز: 4.55)، 3) گوش دادن به موسیقی انگلیسی (امتیاز: 4.10)، 4) ، استفاده از نرم افزارها و برنامه های کاربردی زبان انگلیسی (امتیاز) : 4.02)، و 5) پیوستن به یک گروه انگلیسی از طریق یک برنامه شبکه اجتماعی (امتیاز: 3.90) بیشترین استفاده از TBA توسط دانشجویان دانشگاه EFL بود. علاوه بر این، بین خود هدایتی و استفاده از TBA (p. value< 0.01) و بین TBA و یادگیری خودمختار (p. value< 0.01) همبستگی مثبت وجود دارد (OR: 0.551). می توان نتیجه گرفت که معلمان باید دسترسی به منابع، برنامه های کاربردی و رسانه های اجتماعی مبتنی بر فناوری را فراهم کنند. فعالیت هایی همراه با فناوری انگیزه و سرگرم کننده ایجاد کنند و راهبردهایی برای استفاده از TBA در خارج و داخل کلاس درس آموزش دهند. Manuscript profile
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  20 - The Relationship between Mentalization and Grief Experiences During the COVID-19 Pandemic: A Developmental Study
  Maryam Aghahosseini Jengheshlaghi Shahla Pakdaman Parisa Sadat SeyedMousavi Pegah Nejat
  The main goal of the present study was to determine the relationship between mentalization and grief experience during the Covid-19 pandemic. The moderator role of age and sex was investigated in the relationship between mentalization and the grief experience. For this More

  The main goal of the present study was to determine the relationship between mentalization and grief experience during the Covid-19 pandemic. The moderator role of age and sex was investigated in the relationship between mentalization and the grief experience. For this purpose, 200 Iranian adolescent, adult and middle-aged men and women who had lost a family member or acquaintance during the epidemic period were selected using the available sampling method and completed the grief experience questionnaire (Mehdipour et al., 2009) and the reflective functioning questionnaire (Fonagy et al., 2016). Data analysis was done by calculating Pearson correlation and regression analysis. The results showed a significant positive relationship between RFQc and the grief experience. There was a significant negative relationship between RFQu and the grief experience. The relationship between RFQc and the grief experience, and RFQu and the grief experience didn’t depend on age and sex. According to the results of the research, mentalization during the grief experience can act as a protective factor. It is recommended to use mentalization in designing appropriate interveining approaches during the grief experience. Manuscript profile
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  21 - The impact of capital structure and corporate social responsibility on business risk during the covid-19 pandemic
  سید حسین شاکر طاهری Fateme Soleymani somareyn mohammadreza zanganeh
  Abstract The main purpose of the research is to examine the relationship between investment decisions and corporate social responsibility on business risk due to the spread of Covid-19. The statistical population of this research includes companies admitted to the Tehr More

  Abstract The main purpose of the research is to examine the relationship between investment decisions and corporate social responsibility on business risk due to the spread of Covid-19. The statistical population of this research includes companies admitted to the Tehran Stock Exchange that were active during the years 2014 to 2020. Their number is 120 companies based on the screened criteria. The results of the first hypothesis test showed that there is a positive and significant relationship between business risk and the financial leverage of the company during the Covid-19 pandemic. The results of the second hypothesis test showed that between the business risk and high financial leverage of the company during the Covid epidemic 19- With regard to social responsibility, there is a positive and significant relationship, and finally, the results of the third hypothesis test showed that there is a negative and significant relationship between business risk and low financial leverage of the company during the Covid-19 pandemic, regardless of social responsibility. Manuscript profile
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  22 - Prediction of quality of life on anxiety and depression caused by covid-19 in married women of Islamshahr city
  Maryam Ghasemi
  The aim of the present study is to predict the quality of life on anxiety and depression caused by covid-19 in married women of Islamshahr city. The statistical population in this research is the married women of Islamshahr city, and the sample size is estimated to be 3 More

  The aim of the present study is to predict the quality of life on anxiety and depression caused by covid-19 in married women of Islamshahr city. The statistical population in this research is the married women of Islamshahr city, and the sample size is estimated to be 384 people based on Morgan's table, which were selected by simple random sampling. Questionnaires have been distributed online. The research tools are 3 questionnaires, which include the quality of life questionnaire, the corona disease anxiety questionnaire, and the Beck depression questionnaire. The analysis of the information obtained from the questionnaires has been done at two levels of descriptive statistics and inferential statistics. The research findings were analyzed using SPSS version 26 software. Considering that the distribution of the obtained data was not normal, Spearman's correlation test and non-parametric regression analysis were used. The results of the research showed that there is a negative and significant correlation between the quality of life and anxiety caused by covid-19 (R = -0.681), and there is a negative and significant correlation between the quality of life and depression caused by covid-19 (r = -0.751). R). Also, according to the obtained results, the quality of life is able to predict anxiety and depression caused by covid-19 (P>0.05). Manuscript profile
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  23 - Investigating the Relationship between the Prevalence of Quid 19 and the Stock Price Crash Risk with Emphasis on the Role of Corporate Social Responsibility in the Tehran Stock Exchange
  Zeinab Rezaei Ali Tamoradi
  10.30495/jdaa.2023.698892
  AbstractStock Price Crash Risk is a phenomenon in which stock prices undergo a sharp and negative sharp adjustment. On the other hand, if a company with a high social responsibility culture adheres to the same high level of ethical standards in financial reporting, it w More

  AbstractStock Price Crash Risk is a phenomenon in which stock prices undergo a sharp and negative sharp adjustment. On the other hand, if a company with a high social responsibility culture adheres to the same high level of ethical standards in financial reporting, it will face a higher level of transparency and a lower level of bad news accumulation, so such companies are expected to risk falling stock prices. Decrease. also, in the context of the COVID-19 epidemic, the impact of this disease on socially responsible companies and the risk of falling stock prices has not been determined. Therefore, this study examines the relationship between the prevalence of COVID-19 and the risk of Stock Price Crash Risk with emphasis on the role of social responsibility in the Tehran Stock Exchange during the period 2015 to 2021 using the information of 130 selected companies. The results showed that social responsibility has a negative and significant effect on the risk of falling stock prices. The results also showed that with the increase and epidemic of COVID-19 disease, the risk of falling stock prices has increased. In such a situation, the managers try to keep the negative news of the company, which is caused by the imposed conditions of Corona, as secret as possible, and thus the outbreak of Covid 19 disease leads to an increased risk of falling stock prices. The effect of social responsibility on the risk of falling stock prices before and after the outbreak of COVID-19 was significantly different.  Manuscript profile
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  24 - An Ensemble Deep Learning Model for Detection Covid-19 from CT Scan Images
  حبیب ایزدخواه
  Diagnosis of covid-19 using deep learning on CT scan images can play an important role in helping doctors. In this paper, by combining EfficientNet-B2 and vision transformers (V iT − 1 − 32) neural networks a new deep transfer learning is proposed. For evaluation, con-f More

  Diagnosis of covid-19 using deep learning on CT scan images can play an important role in helping doctors. In this paper, by combining EfficientNet-B2 and vision transformers (V iT − 1 − 32) neural networks a new deep transfer learning is proposed. For evaluation, con-fusion matrix, precision, accuracy, recall, and F1 score are used. The experimental results are 0.9838 for validation accuracy, 0.9667 for test accuracy, and 0.9839 for accuracy. Manuscript profile