فهرست مطالب davoud hasani

The main purpose of this study is to investigate the impact of economic uncertainty and government policies on the price volatility of the banking sector in the Tehran Stock Exchange, considering the structural instability in the model parameters. In this regard, in order to estimate the uncertainty of the variables, a variety of symmetric, asymmetric and non-linear GARCH models were estimated, and finally, based on the information criteria and the significance of the asymmetry coefficients, the EGARCH model was selected as the optimal model. In the following, the effect of uncertainty Indicators on the instability of the banking sector index was investigated by the time-varying parameter autoregressive (TVP-VAR). In this research, monthly data were used in the period of 2010:7-2020:9. The results of the final estimation of the research model indicate that the impact coefficients of uncertainty indicators on the instability of the banking sector are variable. In such a way that the effect of the uncertainty of government policies (uncertainty of tax revenues) on the instability of the banking sector estimated negative at the beginning and positive at the end of the period. Based on the impulse response function (IRF), the effect of inflation uncertainty as the indicator of economic uncertainty on the instability of the banking sector is positive. Also, the impact of government policy uncertainty through the exchange rate uncertainty channel has had a positive impact on the volatility of the banking sector in the stock exchange. However, the uncertainty of government policies based on the uncertainty index of tax revenues has had a negative impact on the price volatility of the banking sector, and this impact has gradually decreased.

The main purpose of this study is to investigate the impact of economic and policy uncertainty on the financial stability of the banking sector. In this regard, firstly, using Generalized AutoRegressive Conditional Heteroskedasticity (GARCH), inflation uncertainty as an indicator of economic uncertainty, government tax revenue uncertainty and exchange rate uncertainty as indicators of government policy uncertainty are calculated. Then, the impact of these indicators on the financial stability of the banking sector (calculated using the ZSCORE approach) has been examined. In this study, the monthly data of 19 banks including Melli, Sepah, Post Bank, Maskan, Tejarat, Mellat, Karafarin, Eghtesad Novin, Parsian, Pasargad, Mellal, Sina, Ayandeh, Day, Tourism, Shahr, Iran Zamin, Qarz Al-Hasaneh Resalat and the Middle East has been used in the period 2015 to 2020. The results of this study show a negative and significant relationship between inflation uncertainty and exchange rate uncertainty with the financial stability of the banking sector. However, the coefficient of tax revenues uncertainty is not statistically significant. In addition, the results of the final model indicate a positive relationship between the bank deposit ratio and a negative relationship between the size and ratio of foreign debt with the financial stability of the banking sector.

Hypertension is the most important disease that can cause heart failure, renal dysfunction, stroke and sodden death in a large population throughout the world. The excessive side effects of the chemical drugs that are used in the treatment of hypertension have attracted attention to herbal medicine. This study was designed as a randomized clinical trial on both males and females with first and second stage of hypertension. The patients who met inclusion criteria and none of the exclusion criteria were enrolled in the study. The patients were allocated with random blocked dividing between the case and control group with the same group size. The patients in the control group used placebo and patients in case group used mixed therapeutic syrup of Ziziphus Jujube and Thymus daenensis Celak. The syrup was used twice a day with a dose of 5 ml for each time. In order to study the effects of Ziziphus and Thymus on blood biomarkers, it was checked in two stages. Findings reveal that the mixture of herbal syrup could significantly reduce Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) in hypertensive patients (p = 0.002). The reduction in SBP and DBP at the end of the study was 11.84 and 8.03 mmHg, respectively. Also, the mean arterial pressure compared to the baseline decreased to 8.35%. Regards to other parameters, the results of the experiments at the beginning and end of the study showed that Complete Blood Count (CBC), Fasting Blood Sugar (FBS), cholesterol, low-Density Lipoproteins (LDL), High-Density Lipoprotein (HDL), Aspartate Aminotransferase (AST), Alanine Transaminase (ALT), Alkaline Phosphatase (ALP), Blood Urea Nitrogen (BUN), and creatinine were in the normal laboratory range. According to results it can be stated that jujube and thyme can be considered as a miraculous combination in  Cardiovascular Disease, Persian Traditional Medicine, Blood Pressure, Thymus Daenensis, Ziziphus Jjujube controlling blood pressure, to minimize secondary complications caused by hypertension.

Hypertension is one of the most common chronic diseases in recent decades worldwide. It has been distinguished as the main risk factor of coronary artery disease, aortic dissection, heart failure, renal failure, cerebrovascular diseases, and death. In recent years, the global attention has been paid to complementary medicine to preventive, diagnostic and treatment strategies for hypertension, in previous studies, the history of hypertension from the viewpoint of traditional Persian medicine have been reviewed and several hypotheses raised. In this article, we present the concept of an Iranian physician namely Ali ibn Sahl Rabban al-Tabari on hypertension, which has not been considered properly until now. He defined a state called “Hayajan al-dam” that has clinical manifestations similar to hypertension, although these are not the same, also, we reviewed the viewpoint of other Persian medicine scholars namely Rhazes, Haly Abbas, Akhawayni and Avicenna for this topic.

Today drug addiction is a social, health and political problem in the most countries especially developing countries. Historical studies show that people are familiar with the drug, several thousand years before the birth of Christ returned. Hippocrates and Tyvfrast (at the time), used from opium to treat diarrhea and pain four hundred years before Christ. The ancient history of the "bang" is mentioned, but no evidence of an ancient Iranian acquaintance with opium is there. Razi and IbnSina were the first scientist that become familiar with the medicinal properties of opium in the treatment of diseases. Due to the use of opium in antiquity, philosophers and Iranian doctors found symptoms of opiate effects on the human body. Also they revealed the signs and symptoms who abandoned opium. In this study is reviewed Makhzan Aladvyh, Tohfeh Hakim moemen (Hakim Momin), Tashylalmanafe, Afyoniee (Afyvnyh) paper and Cited facilitate (Tashilal manafe). So it is described and compared the symptoms and the causes mentioned in the books of traditional medicine and modern medicine about the effect of opium and its withdrawal.

The purpose of this study was to assess the amount of compatibility of organizational properties and principles in Zanjan Univsersity of Medical Sciences with the established standards from both the staff and managers’ point of view. Peter Senge Assessment Characteristics of Learning Organization (personal mastery, shared vision, mental models, team learning and system approach) was used for this goal. This descriptive-survey was carried out on 360 employees and managers out of 5693 persons. A questionnaire of 25 items was used to collect the data. Then, the data was analyzed using T- test, single group T- test and Anova. The underlying hypothesis was that from the perspective of managers and employees of Zanjan Medical University, this university has a good condition concerning standards of a learning organization. Testing this hypothesis revealed that there was a difference in the present and a favorable condition. Meanwhile, the obtained means for personal mastery, shared vision, mental models, team learning and system approach had a significant relationship with the predicted mean. Our results indicated that some of the features of learning organization in Zanjan Medical University are not satisfactory or in accordance with the standard values. Moreover, the mean difference in managers and employees pointed out the relationship was significant as to mental models and system approach. This finding puts that the managers’ status concerning" mental models” and “system approach” is better than the employees’. The means difference in the males and females in mental models were also statistically significant. The results showed that in mental models of Feature of Learning Organization in the males was higher than the females. Level of education did not have specific effect on the employees’ functioning or other aspects of learning organization. Also, duration of work history in terms of years did not have any effect on the employees’ functioning in different aspects of learning organization.