mehdi jafari
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زمینه و هدف
پرستاران به دلیل بار کاری بالا و محیط کاری پراسترس در معرض سطوح بالایی از فرسودگی شغلی هستند که می تواند کیفیت مراقبت های پرستاری را تحت تاثیر قرار دهد. مراقبت های پرستاری ازدست رفته به مراقبت هایی اطلاق می شود که به طور کامل یا جزئی فراموش شدند. این مطالعه با هدف تعیین ارتباط بین فرسودگی شغلی و مراقبت های پرستاری ازدست رفته در بیمارستان های منتخب دانشگاه علوم پزشکی تهران انجام شد.
روش بررسیدر این مطالعه توصیفی تحلیلی، تعداد 194 نفر از پرستاران شاغل در بیمارستان های دانشگاه علوم پزشکی تهران با روش نمونه گیری در دسترس از بهمن سال 1402 تا فروردین سال 1403 مورد پژوهش قرار گرفتند. جهت گردآوری اطلاعات از پرسش نامه اطلاعات جمعیت شناختی، پرسش نامه فرسودگی شغلی ماسلاچ و پرسش نامه مراقبت های پرستاری ازدست رفته کالیش استفاده شد. تحلیل داده ها در نرم افزار SPSS نسخه 26 و با استفاده از آمار توصیفی (میانگین و انحراف معیار و درصد و فراوانی) و آمار تحلیلی (تی مستقل، ضریب همبستگی پیرسون، آنوا و تحلیل رگرسیون) انجام شد.
یافته هامیانگین و انحراف معیار نمرات زیرمقیاس های فرسودگی شغلی شامل خستگی عاطفی، مسخ شخصیت و عدم موفقیت فردی به ترتیب 10/70±32/44، 4/14±18/76 و 7/10±29/91 بود. میانگین و انحراف معیار مراقبت های پرستاری ازدست رفته 2/67±35/78 به دست آمد. نتایج نشان داد بین زیرمقیاس های فرسودگی شغلی و متغیرهای جمعیت شناختی ارتباط معنی داری وجود ندارد (0/05P). بیشترین و کمترین میزان همبستگی به ترتیب مربوط به زیرمقیاس های خستگی عاطفی (001/0>P، 608/0=r) و مسخ شخصیت (r=0/608 ,0/001>P) بود. نتایج تحلیل رگرسیون نشان داد زیرمقیاس های خستگی عاطفی (0/62=β)، مسخ شخصیت (0/30=β) و عدم موفقیت فردی (0/34=β)، پیش بینی کننده های مثبت و معنی دار مراقبت های پرستاری ازدست رفته هستند (0/001>P).
نتیجه گیریدر این مطالعه ارتباط مستقیم و معنی داری بین مراقبت های پرستاری ازدست رفته و فرسودگی شغلی مشاهده شد. به مدیران پرستاری توصیه می شود جهت کاهش مراقبت های پرستاری ازدست رفته، پیشگیری و کاهش فرسودگی شغلی پرستاران را در اولویت برنامه های خود قرار دهند.
کلید واژگان: مراقبت پرستاری ازدست رفته, فرسودگی شغلی, پرستار, ایرانBackground & AimsNurses often experience high levels of job burnout due to heavy workloads and stressful conditions, which can have a negative effect on the quality of nursing care. This study aims to determine the relationship between job burnout and missed nursing care in nurses from the selected in Tehran, Iran.
Materials & MethodsIn this descriptive-correlational study, 194 nurses of hospitals affiliated to Tehran University of Medical Sciences, were included using a convenience sampling technique from February to April 2024. Data were collected using a demographic form, Maslach burnout inventory (MBI), and Kalisch’s missed nursing care scale. Data were analyzed in SPSS software, version 26 using descriptive statistics (mean, standard deviation, Percentage, and frequency) and inferential statistics (Independent t-test, Pearson correlation test, ANOVA, and regression analysis).
ResultsThe mean scores for the subscales of MBI including emotional exhaustion, depersonalization, and personal accomplishment were 32.44±10.70, 18.76±4.14, and 29.91±7.10, respectively. The mean score of missed nursing care was 35.78±2.67. The results showed no significant difference in job burnout and missed nursing care scores based on demographic variables (P>0.05). No significant relationship was found between job burnout and age or work experience (P>0.05). Pearson correlation test results revealed a significant direct relationship between the subscales of MBI and missed nursing care (P<0.001). The highest and lowest correlations were for the MBI subscales of emotional exhaustion (r=0.608, P<0.001) and depersonalization (r=0.301, P<0.001), respectively. The results of regression analysis showed that emotional exhaustion (β=0.62), depersonalization (β=0.30), and personal accomplishment (β=0.34) were significant predictors of missed nursing care (P<0.001).
ConclusionThere is a significant relationship between missed nursing care and job burnout in nurses. Healthcare authorities are recommended to use appropriate interventions to prevent or reduce nurses’ job burnout in order to reduce the occurrence of missed nursing care and improve patient outcomes.
Keywords: Missed Nursing Care, Job Burnout, Nurse, Iran -
Background
In today's world, due to intense competition and the rapid pace of production, exploiting knowledge and converting it into economic returns has become a critical management issue for academics and capital owners. Commercialization activities can impact the educational and research programs of universities, potentially leading to resistance against them.
ObjectivesThe current study was conducted to identify the challenges of the commercialization process in health science research.
MethodsThis qualitative study was conducted between June and December 2022 in Tehran province, Iran. Data were collected using semi-structured interviews with 22 key individuals, including university management and technology experts, as well as CEOs and experts from knowledge-based companies, selected through purposive sampling. The interview guide was designed based on four in-depth interviews, theoretical foundations, and comparative study findings. The obtained data were analyzed using the conventional content analysis method in MAXQDA 10 software.
ResultsThe challenges of the commercialization process for health sciences research results were categorized into six main themes and 16 sub-themes. The main themes identified in this study were rules and regulations, societal culture, university management and infrastructure, human resources, financial systems, and organizational cooperation with industry.
ConclusionsPolicymakers, especially senior health managers, can create a suitable platform for the optimal use of resources and the expansion of targeted relationships between universities and industries by incorporating economic insight into academic services. By compiling relevant laws and guidelines, optimizing resource management, achieving financial independence for universities, and increasing the productivity of health research, the high costs associated with the commercialization of academic research projects can be reduced.
Keywords: Commercializations, Research, Technology Transfer, Health Services, Medical Sciences, Challenges, Barriers, Iran -
ساختمان هوشمند، ساختمانی است که اجزای داخلی آن با یک منطق منسجم و سازگار با یکدیگر تعامل دارند. این ساختمان با یکپارچه سازی سیستم ها، ساختار، خدمات، مدیریت و روابط متقابل آن ها، محیطی پویا و مقرون به صرفه ایجاد می کند. ساختمان های هوشمند با استفاده از فناوری های پیشرفته، میزان انرژی موردنیاز برای سرمایش و گرمایش را کاهش می دهند. این امر باعث کاهش هزینه های عملیاتی و مصرف انرژی می شود، بدون اینکه آسایش ساکنین به خطر بیفتد. اینترنت اشیا (IoT) به دنبال هوشمندسازی اشیا و محیط ها است. این فناوری با اتصال اشیاء به اینترنت، آن ها را قادر می سازد تا با یکدیگر و با انسان ها تعامل داشته باشند. در این راستا، ساختارهای هوشمند نیز یکی از دغدغه های اصلی اینترنت اشیا هستند. رشد اینترنت اشیا، توسعه پروتکل های جدید مسیریابی مبتنی بر معماری را برای شبکه های حسگر بی سیم ضروری کرده است. این پروتکل ها با کاهش مصرف انرژی، طول عمر و عملکرد این شبکه ها را افزایش می دهند و درعین حال محدودیت های باتری گره های اینترنت اشیا را برطرف می کنند. هدف این تحقیق، توسعه یک مدل انتقال داده برای مسیریابی داده های اینترنت اشیا در ساختمان های هوشمند است. ازجمله راهکارهای موجود برای مسیریابی داده های اینترنت اشیا در ساختمان های هوشمند، استفاده از روش های خوشه بندی هوشمند اشیاء و بهینه سازی ازدحام ذرات (PSO)، بهینه سازی ازدحام ذرات آشفته (CPSO) و بهینه سازی ازدحام ذرات مرتبه آشفته کسری (FCPSO) است. الگوریتم پیشنهادی برای به حداقل رساندن مصرف انرژی در اینترنت اشیا، به دلیل توانایی آن در کاهش تعداد پارامترهای تاثیرگذار بر عملکرد، می تواند گزینه مناسبی باشد. این قابلیت، هدف بسیاری از رویکردهای بهینه سازی است.
کلید واژگان: بهینه سازی, مصرف انرژی, الگوریتم بهینه سازی, اینترنت اشیا, مدل سازی مصرف انرژیPurposeThe Internet of Things is an extensive network of physical objects such as devices, machines, buildings, and other tools in which sensors, network connections, and software are embedded as a small system. The method of clustering things is one of the efficient methods to reduce energy consumption in the data transfer phase in the Internet of Things. In clustering, each cluster has a node called the cluster head, which is responsible for coordinating network operations and collecting data from sensor nodes. The most important objective of this study is to improve the amount of energy consumption in the data transfer cycle. Most of the communication and computing tasks should be completed within a limited period to avoid unfavorable consequences since IoT applications are very time-sensitive and critical. Thus, ensuring real-time support in large-scale IoT networks is one of the most important and challenging research issues.
MethodologyPSO, CPSO, and FCPSO algorithms were used in this study. Finally, the FCPSO algorithm was formulated using the theory of fractional order derivatives. MATLAB was used to simulate and evaluate IoT information security and PSO, CPSO, and FCPSO in smart buildings. Also, the results of the proposed method were compared with similar methods. Several parameters are affected. The values of these parameters strongly depend on the convergence improvement. In this study, the following parameters are considered when transferring data to the center or between things:-Etx and Erx: energy used to transfer and receive data, respectively, in the nodes.-Dij: distance between node i and node j.-Eelec: energy available in each node.-Fij: data transfer rate between two nodes.-CS, CR, and CB: base station node cost, sensor node cost, and reinforcing node cost, respectively.All simulations were performed in the Windows 10 operating system using quad-core 2.5 GHz processors, working frequency 2, and a memory capacity of 8 GB. The simulation was done in MATLAB 2020 software. Ten bench test functions were used to examine the effectiveness of the proposed algorithm.
FindingIn the scenario where the FCPSO method is used for information transfer, the energy consumption can be reduced by using the FCPSO method for optimization. The second test method uses the same described method to evaluate Etx and Erx parameters. These two parameters can be viewed as a single parameter whose value can be set arbitrarily for each thing. The FCPSO method performs better than the standard transfer mode in this test condition.In this measurement, the amount of memory consumption (in megabytes) to complete authentication requests in smart buildings based on the Internet of Things has been investigated and compared based on the number of sent packages. The results indicate that the third method has the lowest memory consumption for more packets, while the proposed method could reduce the memory consumption for a high number of packets.In the second test, the amount of energy required to transfer data from the source to the destination is evaluated. The number of data packets increased in each successive step. Results shows that the proposed method uses less energy than comparable methods.The accuracy criterion shows how well the proposed technique can accurately display the identity in smart buildings based on the Internet of Things. Results compares the accuracy rate of the proposed technique for 188 unique identity effects with the accuracy of the second and third methods for different packets.The simulation results indicate that the proposed method is more accurate than the second and third methods for identifying distinct packets in IoT-based smart buildings.
ConclusionIn this study, a model based on the cycle and transfer of information to the base station and between items was used for energy consumption and the Internet of Things network. The most crucial challenges in IoT routing are the energy consumption of each node, comparability, error tolerance, and network dynamics. It is necessary to evaluate the quality of a node using appropriate criteria for effective communication and information transfer. In this study, the energy used to transfer and receive data in nodes, the energy available in each node, the distance between two nodes, and the data transfer rate between two nodes were evaluated. Given the objective of this study, which is to optimize energy consumption in the Internet of Things, the FCPSO algorithm was used to reduce energy consumption during information transfer. Using the FCPSO algorithm to reduce energy consumption in the Internet of Things is possible due to the capability of the algorithm to optimize the problem by considering the number of parameters that can significantly affect the performance of the problem, which is the goal of many optimization problems. The simulation results revealed that using the FCPSO method improves and reduces energy consumption during the program execution and information transfer cycle. The most important limitation of this study is that there is not enough data to build an optimal model. Thus, the possibility for model non-convergence increases. Another crucial issue in this regard is the degree of computational complexity that new data transfer models require.
Keywords: Internet Of Things, Energy Consumption, Optimization, Energy Consumption Modeling, Optimization Algorithm -
This paper addresses the growing energy demand by exploring the realm of microgrids (MGs) and their crucial role in modernizing the conventional grid (CG). As energy needs continue to escalate, the CG has integrated advanced communication technologies, including sensors, demand response, energy storage systems, and electric vehicle integration. MGs have emerged as a viable solution to ensure local energy stability and reliability within low or medium voltage distribution systems. They achieve this by efficiently managing power exchanges between the primary grid, locally distributed generators (DGs), and consumers. This article provides an overview of microgrids, explaining their operational principles and examining various energy management methodologies. At the core of microgrid control strategies lies the energy management system (EMS), which orchestrates the interaction between different energy resources (CG, DG, ESS, and EVs) and loads, ultimately enhancing utility profitability. The paper systematically categorizes EMS design methodologies based on their structural attributes, control mechanisms, and underlying techniques.
Keywords: Microgrid, Excess Power, Frequency Control, Average Power -
The main goal of this article was to compare advanced converters in plug-in hybrid electric vehicles. In this article, there are two examples of integrated chargers, the first charger integrates two DC/DC converters and uses the obtained converter in the structure of the charger, and the second charger integrates two power converters and inverters. It introduces a second integrated charger. These two chargers were simulated using valid references and compared with each other and finally the results showed that the second structure is a better structure in the car. The second structure reduced the volume, consumption, charging cost and losses by reducing the power electronic elements. This structure also had a better and higher capacity than the first structure. When it comes to getting the battery voltage to a high enough level to power the motor, the performance of the two structures was not much different, but in all other cases, the second structure performed better than its counterpart. Therefore, it is better and more economical to use this converter in rechargeable hybrid cars.
Keywords: Power Converters, Inverters, Rechargeable Hybrid Vehicles -
Background
Poor oral and dental health significantly affects public health, impacting over half the world’s population. Dental caries can undermine children’s academic success and career prospects. Social inequities result in unequal access to oral healthcare, particularly among populations with lower socioeconomic status (SES). National policies that improve access to oral health can reduce these disparities.
ObjectivesThis study aims to compile policies implemented by various countries to achieve universal health coverage (UHC) for pediatric dental services.
MethodsThis scoping review was conducted according to Arksey and O’Malley’s framework and is reported using the preferred reporting items for systematic reviews and meta-analyses extension for scoping reviews (PRISMA-ScR) guidelines. A systematic search was conducted on databases including Scopus, PubMed, Magiran, SID, Irandoc, Google Scholar, the WHO website, and the databases of Iran’s Ministry of Health. The search aimed to identify literature discussing governmental steps taken to achieve UHC for pediatric dental health, published between January 1, 2011, and December 31, 2022. The results were charted and presented in a table.
ResultsThis review included 22 studies. Six themes were identified based on the roles played by key players in this field, including schools, government policy and support, community-oriented preventive plans, insurance support, parents’ awareness, and inequality in accessing dental services.
ConclusionsA comprehensive policy that reduces barriers to access, increases utilization, and engages all stakeholders—including parents, schools, and community centers—can effectively achieve UHC for pediatric dental health.
Keywords: Universal Health Coverage, Utilization, Access, Pediatric Dentistry, Dental Care For Children -
Our examination of quadratic curvature functionals in Generalized Symmetric Spaces has resulted in the comprehensive classification of critical metric sets within diverse categories of these spaces.Keywords: Generalized Symmetric Space, Quadratic Curvature Functional, Critical Metric, Homogeneous Space
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الگوی جریان آب به سمت زهکش و اجزای شبکه جریان، اساس روابط طراحی سیستم زهکشی و تعیین کننده فاصله و عمق زهکش ها می باشند. این تحقیق، با هدف ارزیابی سهم اجزای جریان در اطراف زهکش زیرزمینی در مزرعه آزمایشی زهکشی زیرزمینی اراضی شالیزاری در دانشگاه علوم کشاورزی و منابع طبیعی ساری طی سال 1397 انجام شد. مقادیر سطح ایستابی و دبی زهکش ها به صورت روزانه در طول فصل کشت کلزا اندازه گیری شده و هدایت هیدرولیکی افقی و عمودی لایه های مختلف نیز به روش چاهک تعیین شدند. بار اجزای جریان نیز با فرمول های موجود محاسبه و با مقادیر اندازه گیری شده مزرعه ای مقایسه شد. نتایج نشان داد منحنی سطح ایستابی در فاصله بین دو زهکش، حالت افقی داشته و تنها در نزدیکی زهکش، افت زیادی مشاهده شد. وجود یک لایه با نفوذپذیری کم در عمق 60-30 سانتی متری موجب کاهش نفوذ عمودی و افزایش حرکت افقی آب به سمت زهکش شده است. هم چنین مقادیر اجزای جریان نشان داد که بار جریان افقی بخش اعظمی از جریان را تشکیل داده و همبستگی مناسبی بین مقادیر محاسباتی بار افقی و مقادیر اندازه گیری شده وجود داشت اما، سهم جز عمودی جریان کم برآورد شد و با اندازه گیری های مزرعه ای مطابقت نداشت. مقدار کل بار جریان برآورد شده نیز با مقدار سطح ایستابی اندازه گیری شده اختلاف زیادی داشت. در مجموع، جریان افقی و شعاعی در محاسبه بار جریان در مزرعه شالیزاری سهم زیادی داشته و به دلیل کم بودن نفوذپذیری لایه کفه سخت و مقاومت در برابر جریان عمودی، اختلاف زیادی در مقدار بار کل جریان با مقدار اندازه گیری شده وجود داشت.کلید واژگان: بار افقی, بار شعاعی, بار عمودی, دبی زهکش, سطح ایستابیMany theories are found for subsurface drainage system design (Kumar et al., 2013). These were formulated by some of the soil characteristics that are important in designing and operating drainage systems. Most of these formulas have simplified and just involved flow parameters or assumed soil media as a maximum of two layers. In paddy fields, used equations for water table depth prediction have no accordance with field condition. Due to specific flow situations in these fields, much difference was observed in results (Darzi-Naftchali et al., 2013). The differences were because of special layered soil in paddy fields and soil hydraulic characteristics, hardpan layer existence formed in long cultivation and tillage, its effect on flow, and of course, lack of a suitable formula for these fields. So, designing rules for subsurface drainage in paddy fields needs investigation and implementation of new relations to predict the flow pattern suitably. Determination of design criteria and suitable formulas needed to predict flow network around drain tubes. Jafari-Talukolaee et al. (2017) reported in predicting water table profile between bilevel subsurface drainage in paddy fields due to the existence of resistance in vertical flow direction based on soil layers, and field results have no suitable agreement with analytical solution. Darzi-Naftchali et al. (2013), analyzing the effect of subsurface drainage systems on water balance and water table in paddy fields for a successive rice and canola cultivation season, obtained that shallow drainage systems were more influenced than deep drainage systems in water table control. The flow pattern of water towards the drain tube and the components of the flow network are the basis of the drainage system design. By determining the flow path towards the drains and the water table profile variation, the distance and depth of the drains in paddy fields can be determined with greater accuracy.Keywords: Vertical, Loads, Horizontal Loads, Radial Loads, Drain Discharge, Water Table
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در سالهای اخیر علاقه به استفاده از منظومه های ماهواره های کوچک به دلیل کاهش هزینه و زمان و همچنین قابلیت های بیشتر ماهواره های کوچک، افزایش یافته است. این در حالی است که امروزه به دلیل هزینه های زیاد پرتاب، استراتژی های روانه سازی جدید جایگزین روش های سنتی روانه سازی منظومه ها به مدارهای هدف شده اند. بسته به ماموریت منظومه روش های مختلفی برای پرتاب و روانه سازی ماهواره ها در مدار ماموریت ارائه شده اند که در یک تقسیم بندی کلان در یکی از دو دسته مستقیم یا غیرمستقیم قرار می-گیرند. در این مقاله یک روش غیرمستقیم برای روانه سازی ماهواره های یک منظومه به چند صفحه مداری مورد بررسی قرار گرفته است که روشی بهینه بوده و اساس آن، تغییر صفحات مداری با استفاده مثبت از اختلال عدم کرویت زمین در کنار استفاده از زیرسیستم پیشرانش ماهواره است. این روش برای دو منظومه ماهواره ای واقعی با ماموریت های سنجش از دور و ارائه اینترنت جهانی شبیه سازی شده و مورد بررسی قرار گرفته است. همچنین بر مبنای این روش، استراتژی پرتاب و روانه سازی برای یک منظومه ناوبری ماهواره ای منطقه ای با پوشش کشور ایران و با 130 ماهواره، طراحی و پیاده سازی شده است. نتایج به دست آمده از نظر زمان لازم برای روانه سازی و ΔV موردنیاز مورد بررسی قرار گرفته است.
کلید واژگان: منظومه های ماهواره ای, روانه سازی منظومه, تقدم گره, عدم کرویت زمین, مانور تغییر صفحهIn recent years, the interest in using small satellite constellations has increased due to the reduction of cost and time as well as the greater capabilities of small satellites. This is despite the fact that today, due to high launch costs, new launch strategies have replaced the traditional methods of launching constellations to mission orbits. Depending on the mission of the constellation, various methods have been proposed for launching and deploying satellites in the mission orbit, which are classified in one of two categories, direct or indirect. In this paper, an indirect method for deploying the satellites of a constellation to several orbital planes has been investigated. This method is based on changing the orbital planes with the positive use of the earth's oblateness perturbation in addition to using the satellite propulsion subsystem. This method has been simulated and analyzed for two real satellite constellations with remote sensing and global internet missions. Also, based on this method, the launch and deployment strategy for a regional satellite navigation system covering Iran with 130 satellites has been designed and implemented. The obtained results have been analyzed in terms of the time required for the launch and the required ΔV.
Keywords: Satellite Constellations, Constellation Deployment, Nodal Precession, Earth Oblateness, Out-Of-Plane Maneuvers -
Using the Lie classical method, the potential symmetry of the generalized hyperbolic quasilinear and Boussinesq equations is investigated. To find these symmetries in specific cases, we study various scientific examples that admit these symmetries. In addition, using this method, the potential symmetries of the conservative forms of the Boussinesq equation is determined.Keywords: Generalized Quasilinear Hyperbolic Equation, Boussinesq Equation, Potential Symmetry, Potential Equations, Conservative Form
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فصلنامه آمایش محیط، پیاپی 63 (زمستان 1402)، صص 191 -214
بازآفرینی شهری یک رویکرد جامع، یکپارچه وکل نگر است و مشارکت اجتماعی دلالت برگسترش روابط بین گروهی درقالب انجمن های داوطلبانه، باشگاه ها، اتحادیه ها وگروه هایی دارد که معمولا خصلتی محلی وغیردولتی دارند. این پژوهش براساس هدف، ازنوع کاربردی است که با هدف ارزیابی مطلوبیت مشارکت اجتماعی دربازآفرینی محله تاریخی سورو انجام شده است. این پژوهش به روش توصیفی-تحلیلی با هدف ارزیابی مطلوبیت مولفه مشارکت اجتماعی بر بازآفرینی بافت تاریخی سورو ازدیدگاه ساکنین محلی تدوین شده است، و ابزارگردآوری اطلاعات ازطریق مطالعات کتابخانه ای پرسشنامه ومصاحبه بوده است. حجم نمونه400نفرازساکنین محلی وبه منظور تحلیل داده از نرم افزار Spss و روش تحلیل عاملی استفاده شده است. دراین پژوهش با استفاده از روش تحلیل محتوا و بررسی منابع و متون نظری مختلف شاخص ها استخراج گردید و سپس درچهار گروه شاخص های درونی، نسبتا درونی، بیرونی ونسبتا بیرونی طبقه بندی شدند. نتایج پژوهش نشان داد که بیشترین تاثیرپذیری عوامل درونی به ترتیب از شاخص های اجتماعی به میزان 44 درصد، سپس شاخص های فرهنگی به میزان 28درصد، شاخص کالبدی به میزان 16درصد و درپایان شاخص اقتصادی به میزان 12 درصد می باشد.
کلید واژگان: بازآفرینی شهری, مشارکت اجتماعی, تحلیل عاملی, بافت تاریخی سوروAmayesh Journal, Volume:16 Issue: 63, 2024, PP 191 -214Urban regeneration is a comprehensive and integrated approach, emphasizing the expansion of intergroup relationships through voluntary associations, clubs, unions, and typically local and non-governmental groups. This applied research aims to assess the desirability of social participation in the reconstruction of the historical neighborhood of Soro. Utilizing a descriptive-analytical methodology, this study is designed to evaluate the desirability of the social participation component in redeveloping the historical context of Soro from the perspective of local residents. The information was collected through library studies, employing a questionnaire and interviews. The sample size consists of 400 local residents, and for data analysis, SPSS software and the factor analysis method were employed. Through content analysis and a review of various sources and theoretical texts, indicators were extracted and classified into four groups: internal, relatively internal, external, and relatively external indicators. The results revealed that 44% of social indicators are most influenced by internal factors, followed by 28% for cultural indicators, 16% for physical indicators, and 12% for economic indicators, respectively.
Keywords: urban regeneration, social participation, factor analysis, Soro historical context -
اجزای محیط LEO متشکل از خلاء بالا، تابش فرابنفش، چرخه های حرارتی، اکسیژن اتمی، ذرات باردار، تابش الکترومغناطیسی، میکروش هاب سنگ ها و زباله های فضایی، به طور قابل توجهی ویژگی های مواد مواد کامپوزیتی زمینه پلیمری را تخریب می کنند. بنابراین، در طراحی سازه های فضایی با استفاده از مواد کامپوزیتی، خرابی احتمالی خواص مکانیکی ناشی از قرار گرفتن طولانی مدت در محیط فضایی LEO باید به دقت مورد توجه قرار گیرد. بر این اساس، درک قابل اعتماد از محیط LEO در اثرات بر روی مواد کامپوزیت و همچنین بررسی ویژگی های آن بسیار مهم است. سیستم شبیه ساز فضایی تحت خلا با هدف ایجاد محیطی استاندارد با قابلیت رسیدن به خلاهای بالا و همچنین قابلیت ایجاد دماهای پایین طراحی می گردد، همچنین برای بررسی صلاحیت اجزای فضایی و تحقیقات مواد مورد استفاده در ماهواره استفاده می شوند. این سیستم ها رفتار قطعات ماهواره را تجزیه و تحلیل می کنند، تعادل حرارتی و عملکرد آن را ارزیابی می کنند تا از موفقیت و بقای ماموریت اطمینان حاصل کنند.
کلید واژگان: ماهواره, مدار پایین زمین (LEO), تاسیسات شبیه سازی, خلا بالاComponents of the LEO environment consisting of high vacuum, ultraviolet radiation, thermal cycles, Atomic Oxygen, charged particles, electromagnetic radiation, micrometeorites, and space debris significantly degrade the material properties of polymer matrix composite materials. Therefore, in the design of space structures using composite materials, the possible deterioration of mechanical properties due to long-term exposure in LEO space environment should be carefully considered. Accordingly, a reliable understanding of the LEO environment in its effects on composite materials as well as investigating its properties is very important. The space simulator system under vacuum is designed with the aim of creating a standard environment with the ability to reach high vacuums and also the ability to create low temperatures, as well as to check the qualification of space components and research materials used in the satellite. These systems analyze the behavior of satellite components, evaluate their thermal balance and performance to ensure mission success and survivability.
Keywords: satellite, low earth orbit (LEO), Simulation Facility, High Vacuum -
Examining (3+1)- Dimensional Extended Sakovich Equation Using Lie Group MethodsInternational Journal of Mathematical Modelling & Computations, Volume:13 Issue: 2, Spring 2023, P 1
In this paper;, ;we investigate the symmetry group of the (3 + 1)-;dimensional Sakovich equation;. ;We obtain the classical and non-classical Lie symmetries for the equation under consideration;. Therefore;, ;we respond to the question of classification of the equation symmetries and;, ;as a result;, ;its invariant solutions;. Presenting the algebra of symmetries and utilizing Ibragimov’s method;, ;we create the optimal system of Lie subalgebras;. ;We obtain the symmetry reductions and invariant solutions of the considered equation using these vector fields;.
Keywords: Lie algebras, reduction equations, Extended Sakovich equation, Invariant solution -
Investigating the New Conservation Laws of Hunter-Saxton Equation via Lie SymmetriesInternational Journal of Mathematical Modelling & Computations, Volume:13 Issue: 2, Spring 2023, P 6
In this research;, ;using the multiplier method and the 2-dimensional; homotopy operator;, ;higher order conservation laws for the; ;Hunter-Saxton equation are computed;. ;Also;, ;in order to construct new; ;conservation laws;, ;the invariance properties of the multipliers are; ;studied using Lie classical symmetries;.
Keywords: Lie Symmetries, Conversation laws, Multiplier method, Homotopy operator, Hunter-Saxton equation -
In this paper, we prove that the perturbed generalized Benjamin-Bona-Mahony (BBM) equation with a small parameter is approximately nonlinear self-adjoint. It's important for constructing approximate conservation laws associated with approximate symmetries.Keywords: Perturbed generalized generalized Benjamin-Bona-Mahony (BBM) equation, Approximate symmetry, Approximate conservation laws, Self-adjoint
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در این مقاله به بررسی خمینه های اینشتینی با توزیع پوچ موازی می پردازیم. نخست معادلاتی که منجر به یافتن خمینه های مذکور می شود را به دست می آوریم، که به معادلات اینشتین معروف هستند. سپس با استفاده از روش تقارنی لی این معادلات را کاهش می دهیم. در این روش ابتدا مولدهای جبر تقارن را به دست می آوریم و سپس ناورداهای دیفرانسیلی را برای هر کدام از مولدها محاسبه کرده و جواب های ناوردای گروهی این معادله را محاسبه می کنیم. همچنین دستگاه بهینه زیرجبرهای یک بعدی این معادلات را نیز به دست می آوریم، این دستگاه بهینه به ما کمک می کند که یک طبقه بندی روی جواب های ناوردای گروهی با استفاده از نگاشت مزدوجی داشته باشیم.
کلید واژگان: خمینه اینشتینی, توزیع پوچ موازی, گروه تقارنی لی, جواب های ناوردای گروهیIn this paper, we investigate the Einsteinian manifolds with parallel null distribution. For this purpose, we first obtain the equations, which are known as Einstein's equations, that lead to finding the mentioned manifolds and then, we reduce Einstein's equations by using Lie symmetry method. In this method, we first obtain the generators of the symmetry algebra and then calculate the differential Invariants for each of the generators and calculate the group invariant solutions of this equation. We also obtain the optimal system of the one-dimensional sub-algebras of these equations which helps us to have a classification on group invariant solutions by using conjugate mapping.
Keywords: Einsteinian manifolds, parallel null distribution, Lie symmetry group, group invariant solutions -
Most patients with diabetes will present to hospital for a reason not directly related to their diabetes. When a person with diabetes is not cared for properly, hospitalization can become complicated and lead to worse consequences for the patient. In fact, it is important to know how to manage a diabetic patient while in hospital. Therefore, a special organization is needed in hospitals for adaptation to chronic diseases such as diabetes. This study intends to help hospital adaptation to the special needs of diabetic patients by identifying patterns of care delivery in selected countries. This comparative study was performed in 2021. The data collection was conducted by searching in PubMed, Web of Knowledge, Scopus, Science Direct, Springer, Proquest, and also the websites of the selected countries hospitals. Based on the sampling method, three countries, Turkey, United Kingdom, and the United States, were selected from the countries with eligibility. However, during the study, according to the good practices about special diabetic care of countries such as Australia and Denmark, they were also examined. In this review study, we organized and compared the effective measures taken in selected countries in relation to the management of these patients in the hospital, focusing on the dimensions of service package, human resource, process, structure, equipment/technology, and information system required by diabetic patients.
Keywords: Diabetes care, diabetes mellitus, hospital, organization, service delivery -
Background
Widespread use of screening in high-income countries has led to significant reductions in mortality from cervical cancer. However, in Iran, the main reason for the late diagnosis of cervical cancer was the failure to perform a Pap smear (Papanicolaou). We aimed to investigate the status of cervical cancer prevention and its challenges and solutions in Iran.
MethodWe conducted a systematic review of literature published from 1974 to 2021 in the electronic databases, including PubMed, Web of Science, Embase, Scopus, and Google Scholar, and retrieved all English-language articles. Following the application of the inclusion and exclusion criteria, full-text articles were identified and evaluated for eligibility. Finally, these publications were analyzed as part of the synthesis.
ResultsLower social-economic level, inadequate knowledge of screening tests and health centers for Pap test performance leading to worse outcomes such as lower screening participation or coverage.
ConclusionBy addressing these challenges through increasing education, increasing service accessibility, expanding screening programs, improving public awareness, improving insurance coverage, and establishing a control protocol for follow-up, it is possible to reduce cervical cancer incidence and mortality.
Keywords: Cervical cancer, Prevention, Challenges, Systematic review, Iran -
مدیریت موفق پروژه توسعه نرم افزار، نیازمند تخمین دقیق هزینه ها است. تخمین دقیق هزینه ها باعث برنامه ریزی بهتر، با حداقل هزینه خواهد شد. اما تخمین هزینه های پروژه نرم افزار، بدلیل ماهیت ناملموس نرم افزار، همواره با چالش های فراوانی روبرو بوده است. از این رو پژوهش های فراوانی در جهت توسعه ابزار های دقیق برای تخمین تلاش مورد نیاز برای توسعه نرم افزار انجام شده است. بر اساس ادبیات تحقیق، استفاده از شیوه های شناسایی نوع ارتباط میان ویژگی های پروژه نرم افزار و ویژگی های موثر بر تلاش مورد نیاز برای توسعه نرم افزار، تاثیر بسازایی بر افزایش دقت تخمین مقدار این تلاش دارد. ایده این مقاله ارایه یک مدل جدید متشکل از زیرمدل هایی برای تحلیل ویژگی های پروژه و استفاده از یک الگوریتم هیوریستیک جدید و دقیق به نام الگوریتم بهینه سازی جستجوی اتم(ASO) برای پیکربندی ابزارها و روش های مدل سازی داده بوده است. سازماندهی زیر مدل ها به نحوی انجام شده است که موجب افزایش کارایی یکدیگر و در نهایت افزایش دقت تخمین نهایی شده اند. برای ارزیابی دقت مدل پیشنهادی، از3مجموعه داده از پروژه های واقعی استفاده شده و نتایج بدست آمده با نتایج روش های مختلف بر اساس معیار های MMRE، MdMRE و Pred مقایسه شده است. در انتها برای اثبات برتری مدل پیشنهادی نسبت به سایر مدل ها و روش ها از تحلیل آماری wilcoxon استفاده شده است. نتایج بدست آمده، نشان دهنده دقت بالای مدل پیشنهادی است.کلید واژگان: الگوریتم بهینه سازی جستجوی اتم, پروژه نرم افزار, تخمین تلاش توسعه, یادگیری ماشینAccurate estimation of required effort for software development plays an important role in the success of the software project. This is always a challenging issue due to the intangible nature of the software project. Therefore, a large category of researches have been performed to develop accurate tools to estimate the required efforts for software development. According to the presented papers in related works, the adoption of methods to identify the types of relationship between software project features and features affecting the required effort for software development have a significant impact on effort estimation accuracy increment. In addition, the effectiveness of various features on the software development effort estimation is different. So, the feature effectiveness determination is advantageous in increasing the effort estimation accuracy. This paper presents a new model consisting of sub-models for project features analyzing and it uses a new and accurate heuristic algorithm called Atom Search Optimization (ASO) Algorithm to configure tools and data modeling methods. The presented model in this article is designed in multiple layers and the sub-models are organized in separate layers. The organizations of sub-models are in such a way to increase performance of other layers and ultimately increase the final estimate accuracy. In accuracy evaluation of the proposed model, 3 data sets from real projects are used and the comparisons of the results with different methods are presented. Based on the results, the proposed model leads to significant improvement of final effort estimation accuracy.Keywords: Atom Search Optimization, Development Effort Estimation, machine learning, Software Project
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Background
Within the public sector, health managers occupy positions that are typically filled by individuals with a medical, clinical, or nursing experience who are entrusted with assuming an additional role. The primary objective of this study was to employ a scoping review methodology to ascertain a cluster of prevalent subjects encompassing the development of a proficient health care manager.
MethodsThe purpose of this scoping review study was to identify critical components in the field of management professionalization, as described by Arksey and O'Malley. A total of 13 studies, characterized by predefined keywords, were meticulously culled from Scopus, Web of Science, PubMed, and Embase, Magiran, and SID databases. The inclusion and exclusion criteria considered factors such as language, temporal relevance, redundancy, thematic alignment with the professionalization domain, and congruence with the overarching objectives and methodologies of the present investigation. Subsequently, the contents of the selected studies were subjected to rigorous thematic analysis and judicious categorization using a framework analysis approach.
ResultsFrom a total of 10,117 articles, a rigorous selection process yielded 13 articles to be included in this study. The identified dimensions are classified and elucidated across 6 overarching domains; namely, the science of management, educational trajectory, and curriculum, cultural infrastructure and ideologies, standards, professional institutions and associations, and licenses and certifications.
ConclusionTo enhance the efficacy of health management, policymakers and planners ought to adeptly incorporate these dimensions within the framework of the country's health system.
Keywords: Professionalism, Professionalization, Profession, Organization, Administration, Professional Competence -
In this paper, the Lie group of point symmetries for a kind of Benjamin-Bona-Mahoney (BBM) equation is obtained by applying the classical Lie symmetry method. An optimal system of sub-algebras of dimension one for the BBM equation is deduced by classifying the adjoint representation orbits of the Lie symmetry group. Then, for any infinitesimal symmetry generators of the Lie group, the related similarity reductions are generated. Also, new conservation laws for this equation are constructed by the method of scaling. The conservation laws densities is calculated by using the concept of variables weight, scaling symmetry and Euler operator and their fluxes is computed by applying the homotopy operator.
Keywords: Benjamin-Bona-Mahoney equation, Lie symmetry group, Scaling symmetry, Optimal system, Homotopy operator, Conservation law -
Background
Tobacco is a major cause of preventable morbidity and mortality, with a considerable economic burden. The purpose of this systematic review was to summarize the evidence on the economic burden of tobacco use by searching national and international databases so as to generate useful information about the costs of tobacco use globally.
MethodsA systematic search was conducted in Scopus, PubMed, EMBASE, ProQuest, and Web of Science (ISI) databases to identify relevant studies from 1990 to June 2021 using keywords like burden, productivity, indirect cost, direct cost, economic, monetary, expenditure, tobacco, smoking, and cigarettes. Cost estimates were converted into 2020 international dollars per adult.
FindingsA total of 1,781 articles were identified, of which 361 were deemed to be eligible for inclusion. Eventually, 23 articles were found eligible. In most studies, cost estimates were provided using a prevalence-based approach. The highest total cost, as a percentage of gross domestic product (GDP), was reported for South Korea (1.19%). Noteworthy, in all studies, indirect costs accounted for the highest proportion of all costs. The mean total cost amounted to 5,866 million dollars. The direct costs ranged from 179 million dollars in South Korea to 8,156 million dollars in Israel. Meanwhile, the indirect costs ranged from 289 million dollars in Hong Kong to 9,808 million dollars in India.
ConclusionThe evidence demonstrated the considerable economic burden of tobacco use in various countries, ranging from 0.33 to 1.19% of the GDP of the investigated countries, indicating the necessity of taking immediate measures. Hence, policies are needed to address the economic burden of smoking.
Keywords: Tobacco, Economic burden, Total cost, Systematic review -
زمینه و هدف
طرح تحول نظام سلامت با 3 رویکرد حفاظت مالی از بیماران، ایجاد عدالت در دسترسی به خدمات سلامت و ارتقای کیفیت خدمات از سال 1393 اجرا شد و با دستاوردها و چالش هایی همراه بوده است. باتوجه به میزان وسیع منابع مالی استفاده شده در این طرح و چالش محدودیت منابع در کشور، بررسی تحلیل اقتصادی عملکرد آن در ارتقای شاخص های منتخب درمانی و مالی ضروری می باشد.
روش بررسیدر این مطالعه از ابزارهای اقتصادسنجی استفاده شد. شاخص های درمانی و مالی مرتبط با عملکرد بسته های طرح تحول طی بازه زمانی 1383 لغایت 1398 جمع آوری و با کاربرد روش حداقل مربعات معمولی و تعمیم یافته، ضریب تاثیرگذاری طرح تحول بر شاخص های منتخب بررسی و سپس با روش شکست ساختاری و آزمون های پرون، زیوت-اندریوز و لی استرازیکیچ، موفقیت طرح تحول نظام سلامت در تغییر روند شاخص ها و ایجاد شکست ساختاری مورد آزمون قرار گرفت.
یافته هاطبق آزمون رگرسیون حداقل مربعات معمولی و تعمیم یافته، تمامی ضرایب معنادار و تاثیر مثبت هزینه های طرح تحول بر بهبود شاخص ها تایید شد. بیشترین تاثیر مرتبط با شاخص پرداخت از جیب، با ضریب 7/0 درصد و کم ترین تاثیرپذیری مرتبط با شاخص مرگ کل با ضریب 006/.- است. طبق نتایج آزمون های شکست ساختاری نیز، تمامی شاخص ها قبل از اجرای طرح تحول و 6 شاخص بعد از اجرای طرح تحول، شکست ساختاری را ثبت کرده اند.
نتیجه گیرینتایج آزمون های انجام شده در ابتدا تاثیرگذاری طرح در ارتقای شاخص ها را تایید می کند. همچنین طبق آزمون های شکست ساختاری، تمامی شاخص ها نقاط شکست ساختاری قبل از اجرای طرح تحول را نشان می دهد. این نتیجه که به دلیل افت آن ها در آن مقطع زمانی بوده، بر لزوم اجرای طرح تحول تاکید می کند. ولی بعد از اجرای طرح، نقاط شکست ساختاری مثبت به صورت عمده که نشان دهنده ارتقای قابل توجه شاخص ها است، مشاهده نشد.
کلید واژگان: طرح های نظام سلامت, تحلیل هزینه سودمندی, مدل های اقتصادسنجی, روش شکست ساختاریBackground and ObjectivesHealth system transformation plan (HSTP) of Iran, with three main goals of financial protection of patients, justice in access to health services, and improving the quality of services was implemented since 2014 which has had some achievements and challenges. Considering the large amount of financial resources used in this plan and the limitation of resources in Iran, this study aims to examine the performance of this plan in improving some health-related and financial indicators.
MethodsEconometric tools were used in this study. The data of health-related and financial indicators related to the performance of HSTP from 2004 to 2019 were first collected. Then, using the ordinary and generalized least squares estimation methods, the effect of the transformation of HSTP on the selected indicators was examined. Finally, by using the structural break tests of Perron, Zivot-Andrews and Lee-Strazicich, the success of the HSTP in causing positive changes in the indicators and creating structural breaks was examined.
ResultsAccording to the ordinary and generalized least squares regression models, the coefficients of all indicators was significant and the positive effect of the costs of HSTP on the improvement of these indicators were confirmed. The greatest effect was reported on the out-of-pocket payment rate with a coefficient of 0.7 and the lowest effect was on the total death rate with a coefficient of -0.006. According to the results of the structural break tests, all indicators had recorded structural breaks before implementing the plan, while only six indicators showed structural breaks after the implementation.
ConclusionThe HSTP was effective in improving the selected indicators at the beginning. All indicators showed structural break points before implementation of the HSTP, due to their reduction at the related time points, which emphasized the necessity of implementing the HSTP; however, after implementation, no positive structural break points are observed to indicate a considerable improvement in the indicators.
Keywords: Health system transformation plan, Cost-benefit analysis, Econometric models, Structural break methods -
هدف از تحقیق حاضر، شناسایی و اولویت بندی مجموعه عوامل موثر بر ایجاد بندر خشک در بندر انزلی است. امروزه شاهد افزایش مشکلات بنادر ساحلی به دلیل افزایش استفاده از شیوه حمل و نقل کانتینری کالا هستیم. برای حل این مشکلات، مفهومی به نام بندر خشک مطرح می گردد که نیاز به استقرار و توسعه علمی و صحیح آن در ایران و به ویژه بندر انزلی به منظور حفظ و تداوم افزایش میزان حمل و نقل کانتینری احساس می شود. این پژوهش از لحاظ هدف کاربردی و از روش دلفی برای تحلیل، بررسی و نتیجه گیری استفاده نموده است. با مرور ادبیات و پیشینه تحقیق، استفاده از نقطه نظرات خبرگان و کارشناسان و صاحب نظران امور بندری و دریایی و مشاهده فهرست جامعی از عوامل موثر بر ایجاد بنادر خشک شناسایی شد و این لیست در اختیار کارشناسان و متخصصان خبره به صورت جداگانه قرار گرفت و از آنها خواسته شد که با توجه به موضوع پژوهش، اصلی ترین و مهم ترین عوامل را شناسایی کنند. پس از تایید پایایی و روایی آن، پرسشنامه نهایی طراحی گردید. با روش دیمتل روابط و چگونگی تاثیرات عوامل بر یک دیگر مشخص می شوند و در نهایت از روش فرآیند تحلیل شبکه ای ای ان پی (ANP) براساس دیمتل که روش دی ای ان پی (DANP) نامیده می شود برای اولویت بندی عوامل استفاده خواهد شد. نتایج تحقیق نشان می دهد، عوامل محیط زیست رتبه اول، عوامل اقتصادی رتبه دوم و زیرساختهای سخت افزاری رتبه سوم را بدست آوردند و عامل حفاظت از زمین های حاصلخیز رتبه اول را بدست آورده است.
کلید واژگان: بندر خشک, بندر انزلی, فرآیند تحلیل شبکه ای ای ان پی(ANP)IntroductionThe vast geographical area of Iran and the long distance that most cities in our country have with coastal ports, has created many problems for exporters, importers and transit of goods, and the high cost of road transport increases the cost of goods for domestic products. This has reduced the competitiveness of domestic producers over foreign competitors. In addition to this issue, we are witnessing heavy traffic in the port cities and highways of the country, especially in the northern ports such as Anzali and Nowshahr ports, which are caused by the movement of trucks. In addition, port cities have increased traffic problems at certain times of the year due to their tourist nature due to the heavy passenger load, and sometimes truck traffic is prohibited and goods leave the port with difficulty. Problems such as long loading and unloading time and lack of space may be possible. . Today, the position of Anzali port in supplying raw materials to various factories during the last ten years has become a strategic and special port on the Caspian Sea and has a special place among the ports on the Caspian Sea. The implementation of the comprehensive plan and commercial development of Anzali port in recent years and the construction of breakwaters and the creation of new infrastructure has increased the volume of economic exchanges.
MethodologyThe research method is applied and Delphi method has been used for analysis, study and conclusion. In order to use the Delphi method, a team of experts in port and maritime affairs has been used. By reviewing the literature and research background, using the points of view of experts and experts and experts on port and maritime affairs and observing a comprehensive list of factors affecting the creation of dry ports was identified and this list was provided to experts and specialists separately. They were asked to identify the main and most important factors according to the research topic. After confirming its reliability and validity, the final questionnaire was designed. The Demitel method determines the relationships and how the factors affect each other, and finally the Demetel-based ANP network analysis process method, called the DANP method, will be used to prioritize the factors. MATLAB 2019 software was used. The steps of the DANP technique are as follows:Step 1) Calculation of direct communication matrix: First, the views of experts are collected and presented with a range of 5 without impact, low impact, effective, high impact and very high impact. When the views of several experts are used, a simple arithmetic mean of the comments is used and a direct correlation matrix, or D, is formed. Step 2) Calculate the normal direct correlation matrix: In this step, the sum normalization of all rows and columns is calculated. Step 3) Calculating the complete communication matrix Criteria: To calculate the complete communication matrix, the same matrix (I) is formed first. Then we normalize the same matrix minus the normal matrix and invert the resulting matrix. Finally, we multiply the normal matrix by the inverse.The fourth step is to calculate the complete relationship matrix of the dimensions as well as the intensity of the effect of the criteria. Step 5) Normalize the full dimensional correlation matrix.Step 6) Normalize the complete correlation matrix of the criteria. Step 7)Form an unbalanced supermatrix.Step 8 - Formation of a rhythmic supermatrix.Step 9) Limit the rhythmic supermatrix.We limit the rhythmic supermatrix by being able to convey a consecutive odd number Z, until the supermatrix converges and stabilizes. The output of this step will be the effective DANP weights.
Research variables:
Dimensions of research variables include hardware factors, economic and environmental factors, each of which has its own visa index. Indices of hardware factors (including, customs arehouses, suitable location for high-risk and perishable shipments,Warehousing facilities, suitable equipment for unloading and loading containers and cargoes, information and communication systems including electronic data exchange systems, scanners and fleet weighing equipment, container transport routes between different modes of transport including railways, roads and inland waterways as a multi-container terminal and services. Logistics indicators, economic factors (including improving the financial and economic situation of the dry port, land prices, finding cheap labor, the possibility of providing specialized manpower, creating sustainable employment, reducing the cost of goods of industrial units) and indicators of environmental factors (including , Protection of fertile lands around Anzali city, improvement of Anzali city ecosystem (environmental effects), improvement of sustainable development process).
resultsAmong the studied factors, the factors of protection of fertile lands have gained the first rank and then the improvement of ecosystem and the process of sustainable development have been ranked second and third, which means that environmental factors are in the first priority. It is considered that the lands around Bandar Anzali are fertile and will protect the environment by constructing a dry port and proper location. Accordingly, it has no destructive effects on the ecosystem of Anzali. Then, among the indicators of economic dimensions, the factor of improving the financial and economic situation of the dry port is ranked fourth, and among the indicators of hardware dimensions, the factor of customs warehouses is ranked fifth. According to the obtained results, the effect of economic factors was confirmed as the second influential factor on the establishment of the dry port and finally the hardware factors are in the third place according to the ranking of indicators of these dimensions.The results obtained from the prioritization of the most important factors in setting up a dry port from the perspective of experts in the field of international transportation and trade in Anzali. Environmental factors of a dry port are the most important factor in the success of such a port. In this regard, one of the problems of Anzali city in setting up ports is that there are many fertile lands around Anzali city, which will protect the environment around Anzali city by constructing a dry port. Also, the lack of a rail network in the coming years and the need for a major overhaul and further development in this area has raised concerns about entering this mode of transportation. Therefore, one of the main requirements of Anzali city for the development of dry port projects in the country, while determining and defining in a place that does not harm the environment and ecosystem of Anzali city and rail and storage capacity, and creating and improving road development in necessary cases, Structural development and role of dry ports in Anzali city. This framework can be defined by designing a comprehensive document for the development of combined ports.The fourth priority for the financial dimension, on the one hand, indicates the relatively high importance of funding for dry port projects, and on the other hand, reflects the correct view in the country, which has considered infrastructure and platform as the principle and financial resources as complementary. That is why the entry of domestic private companies, only with financial support, has not been very effective in this area in recent years. Obviously, overcapacity of the transportation network is one of the main goals in creating a dry port, and according to research, heavy investments in the capacity of container terminals and larger ships and more container flow, put a lot of pressure on coastal port operations.The very low importance of road factors and the great attention to the environment show that there is a lot of concern in this field in the city of Anzali. Perhaps this deep attention is due to the specificity and characteristics of Anzali city. Certainly, if these ports are properly located in the country, the shortcomings and problems of road routes will be better identified. Although access to land is important in competition with the sea, the commissioning of a dry port will always have an impact on energy consumption, accumulation in road networks, to some extent on the environment. Obviously, ignoring these cases will have many negative consequences in the future that will nullify the benefits of the dry port; Among other things, the increase in road and rail transport traffic increases air pollution and heat in the region and in the long run affects the vegetation of the region, and this progresses even to the increase of diseases for residents of nearby areas.
Keywords: : Dry Port, Anzali Port, ANP Network Analysis Process -
مقدمه
تغییرات کوچک در شاخص های اکسیداتیو و انرژی سلولی قلب احتمالا با پیری زودرس بافت، عدم توانایی حفظ تمرینات ورزشی و بروز بیماری قلبی- عروقی در ارتباط است. بر این اساس هدف تحقیق حاضر بررسی تاثیر هشت هفته تمرین هوازی و عصاره بذر گشنیز با دو دوز 5 و 10 میلی گرم بر نشانگران استرس اکسیداتیو و مقادیر ATP عضله قلبی رت های مسموم شده با آب اکسیژنه بود.
روش کار42 سر موش نر سالم بالغ بطور تصادفی در هفت گروه 1) کنترل 2) مسمومیت، 3) H2O2+ تمرین، 4) H2O2+ mg/kg 5 عصاره بذر گشنیز (مکمل یک)، 5) H2O2+ mg/kg 10 عصاره بذر گشنیز (مکمل دو)، 6) H2O2+ تمرین+ مکمل یک و 7) H2O2+ تمرین+ مکمل دو جایگزین شدند. در طی یک هفته گروه ها با دریافت mg/kg 100 آب اکسیژنه بصورت صفاقی مسموم شدند. در ادامه گروه های هدف به مدت هشت هفته (5 جلسه 60 دقیقه ای در هفته) روی نوارگردان و با دوزهای 5 و 10 میلی گرم به ازای هر کیلوگرم عصاره بذر گشنیز تحت مداخله قرار گرفتند. در پایان میزان غلظت شاخص های ATP، MDA و PAB با استفاده از روش الایزا سنجش و داده ها توسط آزمون تحلیل واریانس دوطرفه و آزمون تعقیبی بن فرونی در سطح معناداری 05/0 تحلیل شد.
یافته هامسمومیت با H2O2 موجب کاهش معنادار آدنوزین تری فسفات (ATP) و افزایش معنادار مقادیر مالون دی آلدیید (MDA) و توازن پرواکسیدان- آنتی اکسیدان (PAB) بافت قلبی شد (001/0=P). نتایج آزمون تحلیل واریانس نشان دهنده اثر کاهشی تمرین هوازی بر مقادیر MDA (009/0=P) و PAB (008/0=P) بود، در حالیکه اثر معناداری بر غلظت ATP نداشت (224/0=P). از طرفی مصرف دو دوز عصاره بذر گشنیز اثر معناداری بر توازن پرواکسیدان- آنتی اکسیدان نداشت (257/0=P)، در حالیکه مصرف آن ها باعث افزایش معنی دار غلظت ATP شد (006/0=P). نتایج آزمون بن فرونی نشان داد تنها مصرف 10 میلی گرم دوز عصاره بذر گشنیز موجب کاهش معنادار غلظت MDA شد (05/0>P). در بررسی اثرات تعاملی بیشترین کاهش معنادار MDA هنگام ترکیب 10 میلی گرم دوز عصاره با تمرین هوازی قابل مشاهده بود (001/0=P)، در حالیکه این اثر در مورد سایر متغیرها دیده نشد.
نتیجه گیریعلی رغم اینکه هشت هفته تمرین هوازی راهکار مناسبی برای تعدیل تغییرات شاخص های اکسیداتیو ناشی از مسمومیت با آب اکسیژنه محسوب می شود، این مداخله اثر معناداری بر میزان انرژی سلولی میوکارد ندارد. از طرفی اثرات عصاره بذر گشنیز احتمالا در مواردی وابسته به دوز مصرفی است. همچنین ترکیب تمرین هوازی با دوزهای عصاره بذر گشنیز دارای اثرات مفید یکسانی بر همه شاخص های بافت قلب نیست.
کلید واژگان: تمرین هوازی, بذر گشنیز, استرس اکسیداتیو, انرژی سلولی, آب اکسیژنهComplementary Medicine Journal of faculty of Nursing & Midwifery, Volume:13 Issue: 1, 2023, PP 43 -51IntroductionThe aim of this research was to investigate the effect of eight weeks of aerobic training and coriander seed extract with two doses of 5 and 10 mg on oxidative stress markers and cardiac muscle ATP levels of rats poisoned with hydrogen peroxide.
Methods42 healthy adult male rats were randomly divided into 7 groups. During one week, the groups were poisoned intraperitoneally by receiving 100 mg/kg of hydrogen peroxide. In the following, the target groups were subjected to intervention on the treadmill for eight weeks (5 sessions of 60 minutes per week) with doses of 5 and 10 mg per kilogram of coriander seed extract. At the end, the concentration of ATP, MDA and PAB indicators was measured using ELISA method.
ResultsThe results of analysis of variance test showed the decreasing effect of aerobic exercise on MDA and PAB values (P<0.05), while it had no significant effect on ATP concentration (P>0.05). On the other hand, consumption of two doses of coriander seed extract had no significant effect on the prooxidant-antioxidant balance (P>0.05), while their consumption caused a significant increase in ATP concentration (P<0.05).
ConclusionDespite the fact that eight weeks of aerobic exercise is considered a suitable solution for modulating the changes in oxidative indices caused by hydrogen peroxide poisoning, this intervention does not have a significant effect on the amount of myocardial cellular energy. On the other hand, the effects of coriander seed extract are probably dose-dependent in some cases.
Keywords: Aerobic Exercise, Coriander Seed, Oxidative Stress, Cellular Energy, Hydrogen Peroxide
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