فهرست مطالب حامد فتاحی

The outbreak of COVID-19 in Iran in February 2019 prompted the Iran’s health system to plan for pandemic prevention and control. The national mobilization program (NMP) against COVID-19 was devised to support the sick and vulnerable and promote community awareness and skills regarding the crisis. This study aimed to investigate the role of community health workers (CHWs) in preventing and controlling the COVID-19 pandemic.

The present study is a descriptive cross-sectional study. The census method was used to study 30,034 rural health workers (RHW) and 22,573 urban health workers (UHW) working in medical universities. The required data were extracted using the integrated health system and the portal of the Ministry of Health and Medical Education's Primary Health Network Management Center and were analyzed using descriptive and analytical statistical methods.

More than 78 million people were screened during the first phase of the NMP , more than 42 million during the second phase, and more than 59 million during the third phase. In addition, by the end of the fourth phase of the NMP, 4,278,899 highly vulnerable individuals were screened. According to the health system's report, CHWs administered 28,073,777 vaccines since the implementation of the fifth step (until 04.09.2021)

Considering the facilities and capabilities of primary health care networks in providing prevention, diagnostic, and treatment services, the activity of the primary health network management center and all affiliated units in the implementation of the NMP has been significant since the beginning of this pandemic. Inadequacies in human resources, financial resources, and training planning should all be considered.

In the present study, it was attempted to perform the residual stress analysis in the aluminum sheets A.A5083 via experimental results of hot metal forming process by gas.Then the accuracy of simulations was evaluated by the Finite Element Method and its comparison with experimental tests. The aim of the present study was to apply an efficient approach to determine the stresses caused during the forming process. Thus, the inductive stress in the imperfect conical sheets produced by gas blow process was measured method via hole drilling. In the experimental test, the stress equal to 44.5 Mpa was obtained. Then, The temperature dependant residual stresses of hot metal forming process were evaluated by the Finite Element Analysis Method. To simulate the forming process, ABAQUS/Explicit finite element software was used. The maximum of deviation in the results of finite element calculations and experimental tests for the maximum stress in the piece was 7%. Thus, it was concluded that via finite element calculations more accurate study on hot metal forming method by gas can be done.

Hospitals are as the most expensive health care centers, and they take most of the health budget, on the other hand they have largest number of educated personnel. Therefore, considering variables that affecting the performance of the hospitals employees is important. This study has been designed and implemented to determine The Relationship between "strategic alignment and "employee engagement" of HashemiNejad Hospital in Tehran.
Material and This Research is a correlation study. Population included 424 staff of nursing, administrative (human resource and finance) as well as auxiliary and paramedical, which a sample size of 202 was calculated. Samples selected randomly in proportion to the number of people in each class. A questionnaire was applied to collect data. Finally Data were analyzed using descriptive statistics including tables, comparative analysis, Pearson correlation, and Multiple Regression.
Based on results Mean ± SD scores for the strategic alignment 31.90±4.47 from 40 and Mean ± SD score for employee engagement 54.19±7.34 of 70 was calculated. The findings of liner regression analysis indicated that strategic alignment can be a predictor of employee engagement (P-value=0.01, r=0.64).
Strategic alignment is one of the effective factors in Employee engagement. Goal setting according to demographic and environmental conditions, prepare strategies to guide employees for achieve the goals, collaborative goal setting and accurate and clear information to employees are as effective methods for improving strategic alignment and then employee engagement.

Studies indicate that hospitals can prepare required background for participation of employees in order to achieve organizational goals through improvement of «Strategic Alignment»، «meaningful work» and «employee engagement. This study has been designed and implemented to evaluate aforementioned variables in Hasheminejad Hospital in Tehran. This Research was a cross-sectional study. Population included 424 staff of nursing، administrative (human resource and finance) as well as auxiliary and paramedical، out of which a sample size of 202 was calculated. Samples were selected randomly in proportion to the number of people in each class. A questionnaire was applied to collect the data. Finally Data were analyzed using descriptive statistics including tables and comparative analysis. In total 172 employees participated in this study. Based on the results Mean±SD scores for the strategic alignment was 31. 90±4. 47 out of 40، meaningful work was 32. 42±4. 77 out of 40، and Mean±SD score for employee engagement was to be calculated 54. 19±7. 34 out of 70. Three variables under study show fairly desirable results. Cooperative goal setting، jobs’ allocation in the organization in terms of staff expertise and experience، considering the financial and spiritual needs of employees and allowing them to have control over their work process play a significant role in the development capabilities of human resources and improvement of each variable.

Underwater background noise consists of a mixture of physical and biological noise that are not directly of interest of the study. Physical noise includes for example surf، wind، turbulence، wave breaking، rain، sand motion، earthquakes and anthropogenic noise. Biological noise includes the calls of marine mammals، crustaceans، fish and all other marine life sounds. With the growing marine renewable industry، notably Tidal Stream Turbine project، underwater background noise mechanisms in shallow water is starting to be of interest. Thus before assessing the turbine noise، it is thus essential to monitor underwater background noise of a proposed site at different tide (spring، neap)، season، at different sea level during the ebb and the flood. In this research southern port of our country are compared for use of this technology and principles of ambient noise measuring during spring and neap tide are introduced. Finally some predictions of results and comparisons between measured and analyzed noise in different frequency band are presented.