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Background: The aim of this study was to evaluate the level of disability and pain intensity among two groups of governmental employees and sellers who suffering from chronic low back pain.
Material and Methods: This descriptive–analytic study was performed from Dec 2015 to Mar 2016among employed staff members of education ministry (N = 50) and 40 sellers with chronic low back pain who were selected through non-random sampling method. The research tool was Oswetry inventory to inspect the pain intensity and level of disability of the participants. Statistical descriptive/analytic method was used to analyze data through SPSS V16.
Results: Totally, 90 participants included 50 employees with an average age of 45.14 ± .85 years and 40 sellers with an average age of 45.42 ± 0.98 years took part in this study. The variables as age, weight, height were the same in the two groups (P > 0.05). There were significant difference between the two groups in terms of BMI2.01 (3.42-.59), pain: 0.55 (0.18-0.92), lifting disability: 0.77 (0.28 to 1.25), walking 1.03 (0.56 to 1.49), sleeping-0.26 (-0.51 -0.002), sexuality 2.07 (1.32 to 2.82), social life. 0.43 (-0.82 -. 03), mean total score of functional disability in performing activities 4.35 (1.93 to 6.77) which were better in the employed group rather than the other group.
Conclusion: This study showed the functional disability and related effective factors were different between employees and sellers. Therefore, categorizing individuals who suffering from back pain into homogeneous groups and investigating the effective factors of disability in each group of people are recommended.

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Background: Sport and exercise therapy can be used for low back pain's prevention. This research was aimed to evaluate the level of functional disability, pain intensity difference between the two groups of patients with chronic low back pain.
Methods: this study was a cross-sectional-applied research conducted from December 2015 to March 2016 on the employed (N = 50) and nonemployee people (N = 40) suffering from chronic low back. Physical activity level and demographic properties in all subjects were measured by Baecke physical activity questionnaire. The data were analyzed using SPSS software version 16.
Results: Totally, two groups employees (N = 50) with an average age of 45.14 ± 0.85 years old and the non-employee (N = 40) people with an average age of 45.42 ± 0.98 years old took part in the study. No significant differences was observed between both groups on such variables as age, weight, height (P > .05). Significant difference was observed between the mean body mass indexes between two groups so that among the employed group was more than the non-employed (p < .05). Significant difference was observed about the physical activity (p < .05) and exercise (p < .05) between two mentioned groups in free time.
Conclusion: This study revealed the different groups of people who have different jobs may be different due to physical activity.

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Aims:  Due to Human’s physical and psychological dimensions interaction so that  both dimensions includes human integrity and general health, this study aimed to investigate the relationship between Low Back Pain(LBP) severity and depression among employees of the  Education Ministry.
Instrument & Methods: In this researching as a descriptive-analytical study, 100 employees of the Education Ministry who were selected through available sampling, included. . Study tools included demographic questionnaire, Visual Analog Scale (VAS)  and Beck Depression Inventory. Data were analyzed by using SPSS 23 and Pearson correlation coefficient (г) and independent t-test.
Findings: The results showed that 62% (N=62) of employees were suffering from LBP with different severity. In addition there was a positive and significant correlation between low back pain and depression in participants (P <0.05). However, no significant difference between mean pain intensity in male and female employees was observed (P> 0.05).
Conclusion: The relationship between LBP and depression among the staff in this study was revealed. It is necessary to pay attention towards physical-psychological factors and also mental and physical vitality for preventing and treatment of LBP.
Conclusion: the relationship between (LBP) and depression among the staff in this study, it is necessary to pay attention towards physical-psychological factors and mental and physical vitality for preventing and treatment of (LBP) will be advised.
 

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A great part of sciences and fundamentals of formation of our cities and past architecture has been destroyed which rooted in regulation of human relationship with the environment. Architects and urban planners deal with their processes only based on modern conditions and fundamentals that are general and international. Lack of these sciences in architecture as well as urban planning has separated it seriously from tradition and finding these fundamentals may, despite of benefitting from modern civilization values, cause biological and health values to be continued based on traditional system in modern architecture and urban planning. Plenty of contemporary cities that recently have been located and constructed are facing with problems in terms of benefitting from natural elements and based on health indicators in the tradition. New academic architecture and urban planning system has trusted in new rules of adjustment of environmental conditions to the extent that even is not seeking for traditional climatic criteria and indicators and is not supposing that many of these problems are arising out of inattention to this traditional science. In the meantime, wind as a climatic-traditional element has direct impact on health of residents of a city. The winds are crucially effective on filtration or creation of pollution in a city. Studies indicated that the wind due to direct impact on human health and is a superior element in prosperity and structure of a city and vernacular architecture of each region, and has a crucial role in filtration or creation of pollution in a city. In this paper, the impact of wind as a natural element on human’s health has been analyzed by considering traditional medical texts and its impact on selection of place and structure of cities has been studied. For this purpose, after analysis of religious, philosophical and medical texts, and description of priority of winds in relation to two factors of wind direction and wind origin, six climatic zones of some of old, important and populous cities were ranked in the light of existence or absence of favorable and unfavorable winds, respectively. Then, by studying the structure of a sample of cities with favorable wind and a sample with unfavorable wind, solution for traditional cities in terms of benefitting from/coping with the wind has been studied. Analysis method used for Islamic and medical fundamentals of wind is interpretive and argumentative. The criterion for selecting cities is being old and populous and located in six climates of Iran. Thereafter, selected cities were classified and graded based on wind quality and considering theoretical fundamentals. The basis of identification of prevailing wind direction in cities includes new climatic books, statistics of meteorological stations as well as internet. Based on fundamentals of traditional and Islamic medicine that is a little different from Greek medicine, human skin breaths in good weather and becomes fresh and in case of lack of wind passage, still air make it stink and putrid. Still air is putrefied and putrefied air is infected. Yet, unsuitable winds may destroy the body’s vitality and be detrimental to health as well as impose bad impacts on human psyche. In nature, life of plants and animals is regulated by wind so that in Quran, it has been mentioned repeatedly and swore spiritually. In the medical fundamentals, wind types and its impact on human health and climate has been studied. According to analysis of Islamic and traditional medical fundamentals, winds quality, from the most favorable to the unfavorable ones respectively, includes east wind, north wind, west wind and finally south wind; meanwhile, in addition to the importance of wind direction, wind origin is also important for its impact. Wind origin includes environments such as sea, desert, mountain, plain, lagoon and forest. In Iran, due to diversity of its climate, instances of each one (usually the first four cases are more evident) can be taken into consideration. Removal of unfavorable wind and attraction of favorable wind in the city creates strategies for city structure. Environmental factors such as wind are significantly important for locating cities. In different regions of Iran, the wind is blown in different directions and from various origins. Each city tries to receive and train any favorable wind. In this study, six climatic zones were selected and in each climate two cities, one with favorable wind status and another one with unfavorable wind blowing were studied to compare the appropriateness of model and experience of ancients for benefitting from or coping with the wind, regarding the health criteria from Islamic viewpoint. In Iranian urban structure model, spatial orientation methods of Iranian housesthat is called Ron (direction) in traditional architecture, had been converted into a model for design of that time. Three fundamental Rons in this regard include Rasteh Ron, Esfahani Ron, and Kermani Ron. Rasteh Ron is referred to the northeast-southwest direction. In this direction, the inside of house is cold in winter and hot in summer. Esfahani Ron is referred to the northwest-southeast and Kermani Ron is referred to east-west direction. In Vitruvius book, an eight-direction model has been introduced for main directions of winds and their specifications that are exposed to main and secondary directions (90 and 45 degrees). Whereas general principle in his proposal is avoiding the same direction with winds in the city passages, so axes shall not be located in main and secondary axes. Iranian Rons, except Kermani Ron, are not located in main and secondary directions and Kermani Ron has been created with a little deviation of the skyline (almost 20 degree); therefore, main lines (including passages and orientation of buildings) of no city are located in main and secondary directions of wind flow. Considering the medical fundamentals of wind direction and superiority of north and east winds to west and south winds in all three Iranian Rons, tendency toward receiving north wind and rejection of south wind such as building backward to the south front can be seen, but in Rasteh and Kermani Ron, tendency for acceptance of east wind and in Esfahani Ron, acceptance of west wind is seen as well. In fact, if a wind of west direction is a favorable wind considering wind origin, the city’s orientation structure is set according to Esfahani Ron to benefit from favorable west wind, while this Ron has less frequency than Rasteh Ron. For instance, in cold climate, mountains of Shahrekord are located in the south that is origin of prevailing wind, so the city has the most unfavorable wind and mountains in the south prevent its suitable sunbathing; thus, its direction tends to the west (Esfahani) so that relative heat of west wind may adjust the coldness of city for the residents. Analysis of instances shows that urban structure of ancient cities has been completely formed based on medical fundamentals and is appropriately conformed to the health factors from Islamic viewpoint. Comparison between quaintly and priority of traditional urban Rons and observance of priority of benefiting from east and north winds and appropriate angle in most of them is the best evidence for paying attention to health in old cities of Iran. Considering the adaption of the past urban structure and health factors from Islamic perspective may be applied on contemporary urban planning and underlie for improvement of environmental pollutions.

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In this paper the reflection coefficient of electromagnetic wave incidence on the walls of the buildings and obstacles that occurs in mobile communication path was modified by solving the Riccati nonlinear equations. For this purpose, the building walls are assumed inhomogeneous layers where their permittivity changes as function of the wall thickness. Using this reflection coefficient, a new propagation model based on urn and GID (uniform geometrical theory of diffraction and geometrical theory of diffraction) for multiple diffraction paths is proposed. Using this model, the diffraction loss as well as the path loss for a row of buildings with two in homogeneous faces is calculated and compared with measured data. Comparison of theoretical and measured results reveals that the modified reflection coefficient can adequately predict the reflective properties of the building walls. Moreover, results obtained with the proposed UID model are in good agreement with the measurement data. Therefore, the modified reflection coefficients well as the new UID model can be used for estimation of multipath signals strength, diffraction loss and also path delay in ray tracing algorithms used in mobile communication, radar and radio links.

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Backgrounds: Hospital sewage is known as an important source of human pathogenic bacteria such as methicillin resistant Staphylococcus aureus (MRSA) strains disseminated from hospital to the environment. This study aimed to investigate the presence of MRSA in the treated outgoing wastewater collected from a referral hospital in Tehran, Iran.
Materials & Methods: During 2015, sampling was carried out at two stages from a hospital wastewater. All black colonies with halos on HiCrome aureus agar medium supplemented with oxacillin were collected and identified as MRSA using specific primers for nucA and mecA genes. Isolates susceptibility to 18 antibiotics was determined according to the recommendations of the Clinical and Laboratory Standards Institute (CLSI). Bacterial typing was performed for the isolates using a combination of Phene plate (PhP) typing, prophage typing, staphylococcal cassette chromosome mec (SCCmec) and ccr typing methods.
Findings: A total of 79 MRSA isolates were confirmed using specific primers and showed susceptibility to quinupristin-dalfopristin, vancomycin, chloramphenicol, and linezolid. High resistance to penicillin, ciprofloxacin, kanamycin, tobramycin, and erythromycin was reported. Sixteen PhP types consisting of eight common types (CTs) and eight single types (STs) were identified among the strains, among which CT1 was the dominant type. Also, two prophage patterns and four prophage types were identified, and all the strains were positive for SCCmec type III and ccr type 3.
Conclusion: The results of this study revealed that sewage-treatment process was able to remove community-acquired MRSA (CA-MRSA) strains; however, hospital-acquired MRSA (HA-MRSA) strains were able to survive during the treatment process in this hospital.

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Customer satisfaction through improving service quality considers a critical sucsess factor in the super service organizations. Because of importance of quality and its effects on customer satisfaction in service industries, the key question is how the quality of services can be evaluated. The aim of this paper to determine the most important factors affecting bank service quality, to calculate and analyze effective factors in bank service quality from view points of bank customers and employees, to analyze the gap between customers and employees' expectations and bank performance and finally to provide the posibility of valid scientific improving bank future performance. Factors affecting bank service quality were defined according to the literature. We also asked bank and academic experts view points to adjust the factors and confirm their validity. To calculate factors relative importance weights, a questionair was designed and distributed among a sample group of customers and employees selected randomly. Results of the statistical analyzes show a meaningful difference between the importance weights determined by customers and employees. Also, there is a meaningful differnce between customers and employees priority concerning corrective measures for better future performance. In addition to statistical analyzes, we measured and evaluated bank service quality using four well known models (SERVQUAL, weighted SERVQUAL, SERVPERF, and SERVIMPERF models). The results imply that in all models, not only both customers and employees scored bank service quality more than average, but also customers average score on bank service quality was meaningfully higher than employees average score. Generally, results of this research provided a set of valuable data to bank in order to improve its service quality in future based on both its customers and employees view points.

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Aims: Due to high building density and lack of adequate open space in large and growing cities, the possibility of developing green spaces as elements controlling air pollution and urban heat island has decreased. One possible solution is to use the vertical surfaces of buildings to develop vertical greeneries. The right choice of vertical greenery systems according to internal and external factors affecting the system is the key to their success and development. This choice includes the correct choice of each of the four components of the system, including plants, growing media, supporting system, and irrigation/ drainage systems.
Methods: In this study, the factors affecting the selection of these systems were collected and explained through field observation and review and analysis of previous researches and were divided into four general categories based on the effect on each of the main components. Then, through a questionnaire from green wall experts, the prioritization of these factors was evaluated using the Five-point Likert scale. The results of the questionnaire were analyzed by Kolmogorov-Smirnov, Cronbachchr('39')s Alpha, Friedman, and Spearmanchr('39')s correlation tests, and presented.
Results: The results showed that external factors: "budget", "type of selected plants", "type of vertical greenery system" and "climatic conditions (temperature and humidity)" and also the internal factor: "structural characteristics and building materials" have had the greatest impact on the choice of these systems.
Conclusion: Paying attention to the importance of each of these factors and the prioritizations can help in organized decision making and optimal selection of vertical greenery systems.

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In this article, we tried to analyze administrative- Financial barriers of economic rationalization by utilizing the theoretical approach of Max Weber. In this regard, firstly, we analyzed the characteristics of the public finance organization based on the collective commitment (Liturgical) of the villages, ils (tribes) and guilds in the period Qajar. Then we studied components such as the domination of the livelihoods economy; the suppression of individualism and the expansion of the economy and the division of labor; the lack of competitiveness of the economy in the world system; the weak social mobility as the outcomes of the general tax system governing this period. In the end, based on research findings, the concept of Communal Rationalism has been presented as a theoretical modification with the historical particularity of Qajar Iran.

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The present study lies within the framework of university education policy in Iran. The main purpose of this comparative study is the necessity to review the quantitative and qualitative content of the headlines of drama at the French language and literature program. What is presented in this study consists of three sections: in the first section, we will reconsider the theoretical bases of overviewing educational content. In the second section, a comparison is made between the current situation of teaching drama of the French language and literature groups in Iran and three credible foreign universities, and in the final section, we will evaluate and present principles for the revision process for this course. In this study, the main hypothesis is whether the drama course needs change in terms of goals, content, style and opportunity of learning and evaluation in Iran. And if so, what changes should be made and in what areas and how? Consequently, after reviewing the curriculum, the change seems necessary. This change should be made through the participation of universities, professors and curriculum specialists. The author’s suggestions are also provided on how to present the course and the changes to be made in this regard. Finally, what we believe has been overlooked in today's drama course, which is in dire need of overhaul, is the issue of fostering student creativity and critical thinking. It should be noted that purely written or purely oral content, in the case of this particular course, cannot meet the needs listed above. Attractiveness is also one of the elements included in our proposed program, because attractiveness motivates. To this end, in the proposed lesson plan, a mixed method has been envisaged to stimulate the interest of the students by making use of new techniques. In this regard, in the proposed lesson plan, one or more plays have been suggested for each lesson

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The cotton shredder bug, Creontiades pallidus Rambur (Hemiptera; Miridae), is a significant pest of cotton, causing extensive damage to cotton leaves and bolls. This study assessed the effectiveness of commercial formulations of phosalone (PHO), thiamethoxam (THX), thiamethoxam + lambda-cyhalothrin (THX + LAM), and spirotetramat (SPI) under field conditions, using both one-time and two-times spray applications. In the one-time spray plots, THX and THX + LAM demonstrated the highest efficacy in reducing C. pallidus populations, as well as mitigating damage symptoms like black spots on cotton bolls and leaves and shredding of cotton blossoms for up to 49 days compared to the control group. However, the effects of SPI and PHO were temporary and diminished after approximately 31 days. When the plots were sprayed for the second time after 30 days, all pesticides significantly decreased pest populations and damage symptoms for up to 49 days. The highest cotton yield in the one-time spray plots was achieved with THX application (323.8 ± 10.62 g cotton/m²), while the SPI-treated plots exhibited the lowest yield (275.7 ± 5.1 g cotton/m²). All THX, THX + LAM, and PHO treatments yielded statistically similar results in the two-times spray plots. Our findings suggest that THX and THX + LAM were the most effective pesticides for controlling C. pallidus populations and mitigating damage symptoms in cotton fields.


 

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The most prominent feature of sheet material forming process is an elastic recovery phenomenon during unloading which leads to springback and side wall curl. Therefore evaluation of springback and side wall curl is mandatory for production of precise products. In this paper, the effects of some parameters such as friction coefficient, sheet thickness, yield strength of sheet and blank-holder force on the springback and side wall curl radius in U-bending of dual phase steel sheets were investigated by performing experimental tests and finite element method. ABAQUS software was used for finite element simulation. Comparison of experimental and finite element results shows good agreement. The results of this research shows that increasing of sheet thickness, reduces springback and side wall curl and increasing of yield strength increases springback and side wall curl. Springback and side wall curl initially increase with raising the friction coefficient and blank-holder force but they decrease again when they go beyond certain values.

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This paper proposes a new hierarchical identification method for fractional-order systems. In this method, a SISO (single input, single output) state space model has been considered in which parameters and also state variables should be estimated.  By using a linear transformation and a shift operator, the system will be transformed into a form appropriate for identification of a fractional-order system. Then, the unknown parameters will be identified through a recursive least squares method and the states will be estimated using a fractional order Kalman filter. This identification method is based on the hierarchical identification principle that reduces the computational burden and is easy to implement on computer. The promising performance of the proposed method is verified using two stable fractional-order systems.    

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The aim of this study was to assess the effect of several doses of spearmint essential oil (SEO; 0, 250, 500, 750 or 1,000 µg ml-1 buffered rumen fluid) on the fermentation kinetic and digestibility using in vitro gas production technique. A total mixed ration (30% roughage: 70% concentrate) was incubated with buffered rumen fluid. In vitro gas production, asymptotic gas production (A), rate of gas production (µ), partitioning factor (PF), microbial biomass (MB), ammonia concentration and digestibility were determined. Increasing the dose of SEO decreased the parameters A and µ. Adding SEO, however, increased PF, ammonia concentration, apparent in vitro dry matter digestibility and true in vitro organic matter digestibility at the lower levels of SEO (250 and 500 µg ml-1). But, at the level of 1,000 µg ml-1, a decrease was observed for these parameters. The increment in PF and digestibility illustrate that SEO has a potential to modulate the rumen fermentation, which may be beneficial (at low doses) for improving nutrient utilization.

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One of the methods of blade production is forging. But according to the complexities of the blades, they cannot be produced in one stage and it's necessary for them to consider preform. In this research, a basic geometry with elliptical cross section for airfoil of blade, was considered and response surface method was used to optimize this preform. Optimization purposes were considered completely die filling and reduction of flash volume, forging load and strain variance. At the end, optimized preform was compared with the model of mass distribution method. Results show response surface method give better results than mass distribution method. Also physical modeling was used for verification of simulation results. Results show simulation results have a good corresponding with experimental results.

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In the present paper, power transmission interaction of multilayered sound isolation panels consists of porous, solid materials and air gaps using Transfer Matrix Method (TMM) has been considered. Considering the theories related to acoustical behavior of multilayered panel lined with poroelastic materials, detail explanation of Transmission Loss (TL) of a panel via TMM has been presented. Calculation of TL for a specified panel via TMM has been compared to existed experimental data in the literature and excellent agreement is observed. Next, based on this verified model, a multi-objective optimization of multilayered panel has been conducted using NSGA-II to maximize TL of panel while the panel weight is kept to a minimum. Results of two-objective optimization reveals, if the designer target is to achieve a specific average TL in the frequency band of 10 to 500 Hz, for a panel with constant width, selecting a panel with lower layers (three layers) can bring lower weight. But, if a higher average TL in the same frequency band is desired, a panel with more layers (six layers) has much better conditions in terms of weight.