ali Shah Hosseini - Academia.edu (original) (raw)

Papers by ali Shah Hosseini

Iranian journal of management sciences, Jun 22, 2018

‫مدیریت بازرگانی, 2014

Price fairness and price satisfaction is one the most important fields in pricing and also in cus... more Price fairness and price satisfaction is one the most important fields in pricing and also in customer satisfaction. In this research, first the dimensions of price fairness, price satisfaction, customer satisfaction, and customer loyalty are extracted from marketing literature, then five hypotheses are developed. In proposed model, price fairness has direct impact on price satisfaction, customer satisfaction and customer loyalty. Also, price satisfaction has direct impact on customer satisfaction and customer satisfaction has direct impact on customer loyalty. Statistical Society of this research is University of Tehran's Student and the number of samples is 379. Students are selected accidently for answering the questionnaire. Structural Equation Modeling is applied in this research. The results show that all of the hypotheses are strongly supported. It means that price fairness is one of the building blocks of the price satisfaction, customer satisfaction and customer loyalty...

2012 IEEE Symposium on Humanities, Science and Engineering Research, 2012

We study fuzzy differential equations (FDEs) using the strongly generalized differentiability con... more We study fuzzy differential equations (FDEs) using the strongly generalized differentiability concept. Utilizing the characterization problem, we present approximate solutions of FDEs under Generalized differentiability by an equivalent system of ODEs. Then we extend midpoint approximation method and give its error, which guarantees pointwise convergence. An illustrative example is given.

Journal of Rehabilitation, 2019

Objective Cerebral Palsy (CP) is a group of non-progressive disorders in a developing brain that ... more Objective Cerebral Palsy (CP) is a group of non-progressive disorders in a developing brain that results in motor problems and other limitations in daily living activities. The presence of motor functions in these children reduces their participation in daily activities. This is one of the important aspects of the child's health and development, especially the child's physical and psychological development. Participation in social activities promotes life satisfaction. Besides, family has a prominent role in identifying and supplying the child's needs. In other words, family plays an essential role in ensuring the health and well-being of their children. Thus, provisions of growth-related health services has now changed from a child-cantered model into a family-cantered model. As a result, it is very important to understand the parents' priorities about participation of their children in the daily activities and providing appropriate client-center services. Materials & Methods In this descriptive-analytic study, 78 children and teenagers with CP aged 3-18 years without psychiatric problems and their parents from Yazd City, Iran had participated. The samples were selected by convenience sampling method, from clients of private and public rehabilitation centers in Yazd Province. In this regard, one state and two private centers were randomly selected and the study samples were selected from the clients referred to the centers. Parents' priorities for participation of their children in activities of daily living were found through semi-structured interviews. In these interviews, we used Canadian occupational performance measure to evaluate the child's level of occupational performance and parents' satisfaction in the three areas of self-care, productiveness, leisure from the parents' perspective. In addition, the level of gross motor performance was evaluated based on the Gross Motor Function Classification System (GMFCS) at five levels. In the Iranian society, the validity of Canadian occupational performance measure for each of three areas of occupational performance has been reported to be between 9.75 and 3.75 and the reliability level for the three domains reported above 0.78. The statistical analysis of data was performed in SPSS V. 16. Descriptive statistics and odds ratio were used for analyzing the data. Results the children' Mean±SD age was 8.12±4.22 years. The first priority reported by the parents was self-care. Mobility was known as the second important priority in everyday life for children. The results obtained from the statistical analysis showed no significant relationship between age and different motor levels (P≥0.05). Conclusion Parents reported functional priorities in similar performance aspects by all age groups and GMFCS levels in Cerebral Palsy children. The first priority was related to self-care. This reflects the desire of the parents to children' doing self-care activities, which not only reduces care pressure, but also leads to promotion in social participation and independence in individual life. The next priority was mobility and the reason can be attributed to the fact that children with CP need mobility to manage their daily life activities.

Rudarsko-geološko-naftni zbornik, 2021

Underground coal mining is known as one of the major sources of methane emissions which mainly oc... more Underground coal mining is known as one of the major sources of methane emissions which mainly occurs after underground coal extraction. Rock strata in-situ methane can potentially be the most significant hazard in coal mining operations. To prevent or minimize the risks of methane emissions, methane drainage approaches have been adopted by coal mines. Rock mass methane drainage is the most efficient and effective approach toward controlling methane hazards as it prevents and reduces the frequency of methane emissions, outflows into the working area and sudden outbursts of methane and rocks. The method includes drilling boreholes from the tailgate side to the unstressed zone in the roof and floor strata above and below a working coal seam. The coal seam gas content in Tabas Parvadeh I is estimated to be about 16 m3 /t, which is relatively high. Based on exploration data, five distinct coal seams have been identified (B1, B2, C1, C2 and D) at the coal deposit and currently C1 is bein...

international journal of nano dimension, 2013

In this study, we describe the growth of carbon nanotubes on commercial iron nanoparticles withou... more In this study, we describe the growth of carbon nanotubes on commercial iron nanoparticles without carbon shell (Fe (nm), size <60 nm) andiron nanoparticles with carbon shell (Fe* (nm), size <60 nm) as catalysts by chemical vapour deposition method. In order to investigation of supports effects, preparation of catalyst nanopowders (Fe* (nm)/Al2O3 and Fe* (nm)/MgO) was carried out by mixing commercial Fe* nanoparticles (as catalyst) with Al2O3 and MgO powders (as supports)by using ball-milling method. The results show in spite of the fact that ballmilling process can have negative effects on diameter and morphology of synthesized CNTs at 925 ˚C, but it could increase the range of growth temperature from 865 ˚C to 975 ˚C.

The research explores a strategic control model by the emphasis on the green approach based on Si... more The research explores a strategic control model by the emphasis on the green approach based on Simons’ levers of control framework. Special consideration is paid for assessing how much green is the organization. The purpose of this paper is to design a strategic control model for Audit institute of social security organization of Iran. The data is gathered from social security organization and Audit institute of social security organization from Jan 2018-19. The research methodology is quantitative method. Five hypotheses were raised at this study. For collecting the required data a standard questionnaire was distributed among 52 managers of the organization and the collected data was analyzed with smart-PLS software. Levers of Control of Simons’ framework provide the theoretical background for strategic control. The results demonstrate that all four levers of control are positively associated with strategic control; while the strategic control, has a positive effect on latter varia...

Bracing as an inactive control system can play important role in structure resistance to side for... more Bracing as an inactive control system can play important role in structure resistance to side forces such as earthquake one of the best and economic methods of utilizing bracing capability is the use of their inflexible capacity. Finite element modeling of buckling restrained braced is so difficult because of complicate interaction between steel and concrete. In this study two finite element models of BRBs include model with and without concrete have created and verified with experimental results. The result of this study shows that the model without concrete can be used as an alternative of model with concrete. Keywords— Buckling restrained brace; Springs; Numerical modeling

There is a trend in the construction industry of adopting more and more relational type contracti... more There is a trend in the construction industry of adopting more and more relational type contracting methods, for example, project alliancing. In addition to this trend, there is increasing adoption of the lean construction principles. This paper explores the inherent relationship between project alliancing and lean construction in an attempt to highlight the similarities between this project delivery method and the lean methodology. Based on the literature studied and the performed interviews, this study shows that alliancing does in fact inherently align with some key lean construction principles. Particularly in the area of customer focus, culture and people, waste elimination, and continuous improvement. An understanding of how and where alliancing aligns with lean can lead to a better insight into how the model can be improved. Such knowledge could be useful to practitioners looking at incorporating more efficiencies into the alliancing model by introducing lean concepts

Introduction : The dynamic interaction between mother and infant is one of the indicative factors... more Introduction : The dynamic interaction between mother and infant is one of the indicative factors of infants’ social and emotional development especially in stressful situations as cognitive evaluating. Methods: An experimental study was completed in 2010 in Tehran on a total of 40 infants (18 boys and 22girls) forming two alternative groups and varying in age of infancy (4, 6, 8, 10 and 12 months). We used a 60 second mute popular “Tom & Jerry” animation to compare the infants’ attention in the presence or absence of mothers’ lap. Changes in orientation time, duration of sustained attention, and the total look duration were measured in terms of eye movement and heart rate changes through pulse oximeter. Furthermore, infants’ presence of general irritability in both conditions was observed. Results: We found that infants in their mothers’ laps showed more length of total look duration and sustained attention and less amount of general irritability than those sitting on baby seats. H...

Numerical Methods in Civil Engineering, 2016

There are varieties of techniques for calculating natural frequency of the structures. Neverthele... more There are varieties of techniques for calculating natural frequency of the structures. Nevertheless, these equations are less developed in the geotechnical structures such as slopes, buttress group, dams, and retaining walls. In earth dams, with respecting to the dimensions and weight of dam, soil-structure interaction is of prime importance for finding seismic parameters including natural frequency, deformation, and other parameters. To accomplish this objective and the inclusion of foundation flexibility, dam foundation was simulated using transition spring. in this research an equation is presented for calculating natural frequency of earth dam using analytical methods. The advantages of this method include more accurate estimation of seismic parameters as well as considering the flexibility of earth dams' foundation. Riley approximation method and shear-free shape function were used in the mathematical solution steps and the trend of gaining the proposed equation. Finally, the results obtained from the proposed equation were compared to those of finite element software GeoStudio-2007[9] and the correlation of responses was observed.

Journal of Rehabilitation, 2019

Objective Multiple Sclerosis (MS) is a chronic inflammatory, demyelinating, and neurodegenerative... more Objective Multiple Sclerosis (MS) is a chronic inflammatory, demyelinating, and neurodegenerative disorder of the Central Nervous System (CNS) and it is also the most common cause of non-traumatic neurological disability in young adults. MS in women, especially young women, is about 1.5 to 3 times more common than men all over the world. About 2.5 million people worldwide are suffering from MS. The destruction of myelin in certain areas exhibits certain signs and symptoms. Balance disorders are particularly problematic because they are associated with difficulty in moving from one position to another, sustaining an upright posture, and performing functional activities such as walking and turning, all of which predisposes people with MS to the loss of equilibrium and falls. Isfahan City in Iran suffers from a high prevalence of MS that put it amongst the regions with the highest prevalence of MS in Asia and Oceania. This study aimed to use the holistic approaches of occupational therapy to investigate the physical and cognitive factors (attention, cognition and muscle strength of lower extremities) that affect the gait of MS patients in the city of Isfahan, Iran. Materials & Methods The present study was a descriptive-correlational one and convenience sampling method was used to recruit the samples. The study population consisted of all patients with MS in Isfahan City in August 2017. A group of 70 patients (24 males and 46 females with the Mean±SD age of 32.20±7.55 y) met the inclusion-exclusion criteria and were enrolled in the study. To be eligible for the study, the patients had to meet the following inclusion criteria: having a neurologist-confirmed diagnosis of MS with MRI scan, being able to read and write, and walk at least 100 m independently. We excluded patients with cognitive impairments that might hinder understanding of the tasks to be accomplished, those with any comorbid neurologic condition other than MS, and those who are unwilling to collaborate with the research process. After providing sufficient information about the research process and getting informed consent of the patients, the questionnaires and tests were provided to the participants to be completed. The study tools were the Mini-Mental Status Examination (MMSE), 10 m Walking Test (10 MWT), Timed Up and Go test (TUG), Sit to Stand test, and Stroop test. For data analysis, the Pearson correlation coefficient and multiple regression analysis were performed in SPSS version 16. Results In this study, 70 patients suffering from MS participated. The results showed a significant negative correlation between the scores of walking speed test (10 m walking) and the scores of the functional strength of the lower extremities muscles (P<0.001) and attention (P=0.01). There is also a significant correlation between muscle strength of lower extremity and balance (P=0.01). Regression analysis shows that the muscle strength of lower extremities has the highest contributions in predicting the speed of walking in patients with MS. Conclusion According to the study findings, among the physical and cognitive factors affecting gait and balance such as muscle strength of lower extremity or cognition and attention, the muscle strength of lower extremity is the most important factor affecting the balance and speed of walking in patients with MS that still can walk. In the process of rehabilitation, especially in occupational therapy, special attention must be paid to a muscle strengthening program for the lower extremities of patients suffering from MS.

Journal of Medical Education Development, 2018

Background & Objectives: Interprofessional learning (IPL) can create more collaborations among st... more Background & Objectives: Interprofessional learning (IPL) can create more collaborations among students of different healthcare disciplines. However, this depends on the tendency of students to learn from each other. Given the fact that the attitude of students is recognized as the major factor for the implementation and success of a program, this study aimed to determine the attitude of final-year students in fields of medicine, nursing, and midwifery of Iran University of Medical Sciences, Tehran, Iran toward the implementation of IPL. Materials and Methods: This descriptive and cross-sectional research was conducted on 200 final-year students in the fields of medicine, nursing, and midwifery, who were active in clinical settings and had work experiences in clinical environments. In this research, data were collected using the valid and reliable readiness for inter-professional learning scale (RIPLS), and subjects were selected through convenience sampling. Results: From 200 distributed scales, about 180 questionnaires (response rate=90%) were returned, 80 and 100 of which were filled by students in the fields of medicine, nursing and midwifery, respectively. According to the results, 50.6% of the respondents were female and 49.4% were male. Moreover, mean (standard deviation) total score of the evaluated students was equal to 79.8 (SD=92). Considering the obtaining of a score higher than the desired level by students (57), it could be concluded that the subjects had a positive attitude toward IPL. While the results were indicative of no significant difference between the two medicine and nursing-midwifery groups in terms of preparedness for IPL (P=0.4), there was a significant difference in the subcategory of cooperation and teamwork (P=0.001). In this regard, medical students obtained a lower score, compared to the nursing and midwifery students. Conclusion: According to the results of the study, the subjects had a proper attitude toward IPL, which itself is the most important support for the entrance of this new educational approach in student curriculums.

Environmental pollution (Barking, Essex : 1987), 2018

Cs-137 is considered to be the most significant anthropogenic contributor to human dose and prese... more Cs-137 is considered to be the most significant anthropogenic contributor to human dose and presents a particularly difficult remediation challenge after a dispersal following nuclear incident. The Chernobyl Nuclear Power Plant meltdown in April 1986 represents the largest nuclear accident in history and released over 80 PBq of Cs into the environment. As a result, much of the land in close proximity to Chernobyl, which includes the Polessie State Radioecology Reserve in Belarus, remains highly contaminated with Cs to such an extent they remain uninhabitable. Whilst there is a broad scale understanding of the depositional patterns within and beyond the exclusion zone, detailed mapping of the distribution is often limited. New developments in mobile gamma spectrometry provide the opportunity to map the fallout of Cs and begin to reconstruct the depositional environment and the long-term behaviour of Cs in the environment. Here, full gamma spectrum analysis using algorithms based on t...

Annals of biomedical engineering, 2018

Investigation of the development of cartilage degeneration after ACL reconstruction is important ... more Investigation of the development of cartilage degeneration after ACL reconstruction is important for improving current surgical treatment of ACL injuries to prevent long-term knee joint degeneration. This pilot study examined the relationship between the changes in weight-bearing knee contact kinematics 6 months after ACL reconstruction and the biochemical composition changes in the knee cartilage measured using T2 relaxation values 3 years after the surgery in seven patients. The analysis indicated that the change of the knee contact kinematics in short-term after ACL reconstruction is associated with an increase of T2 values of the cartilage in longer follow up times. The data of this study could provide preliminary data to power future studies that use prospective, longitudinal research and large patient populations to establish prognostic biomechanical markers for determination of long-term cartilage degeneration after ACL reconstruction.

The Journal of Hand Surgery (Asian-Pacific Volume), 2018

Background: To investigate the role of psychological factors (anxiety and depression) and pain me... more Background: To investigate the role of psychological factors (anxiety and depression) and pain measured on a visual analogue scale (VAS) in the development of complex regional pain syndrome type I (CRPS I) following the distal radius fracture (DRF). Methods: A consecutive sample of patients (N=60) with a distal radius fracture was measured for signs of CRPS by Budapest criteria weekly till 8 weeks and then another follow-up one year after injury to determine the incidence and predictors of developing CRPS I in a prospective cohort study and also to discover whether there is difference between pain, depression, and anxiety level in the patients with and without CRPS I. The most of the patients were treated by Pin stabilization. The Beck depression inventoryshort form (BDI), State-Trait Anxiety Inventory, and Numerical pain rating scale were used to determine the patients’ psychological features and pain intensity at the base line and 8 weeks after the fracture. Results: CRPS I develo...

The Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2007

Construction and Building Materials, 2017

h i g h l i g h t s The moisture susceptibility of GFM-WMA mixtures containing RAP was evaluated.... more h i g h l i g h t s The moisture susceptibility of GFM-WMA mixtures containing RAP was evaluated. The rutting resistance of GFM-WMA containing RAP was evaluated. The effect of short term aging on performance of mixtures was evaluated.

Journal of Rehabilitation, 2016

Objective Rehabilitation of the spinal cord injury is a continuous process needing adaptation in ... more Objective Rehabilitation of the spinal cord injury is a continuous process needing adaptation in all aspects of life. Successful adaptation to challenging situations is called "resilience". Occupational therapists can help the person reconstruct his/ her identity and adapt by improving their resilience. It is also extensive and diverse in concept and definition. It is extremely influenced by the culture and environment. This study aims to narratively review the evidences published on the aspects related to the resilience of people with spinal cord injury. Materials & Methods Comprehensive electronic search of keywords including "spinal cord injury", "resilience" and "adaptation" was done via Google Scholar, PubMed, Scopus, ScienceDirect and Pro Quest and IranMedex to find related articles published within 2000-2015 according to inclusion criteria. From the initially obtained 1823 articles, 1756 articles were omitted due to failure to satisfy the inclusion criteria or being repetitions. After actors underlying resilience and 4 and 5 articles focused on social participation and psychosocial adaptation after spinal cord injury in respect. Results As seen from the included documents, there are various definitions of resilience. Resilience was defined as coping with the conditions after spinal cord injury such that the person takes in his/ her activities of daily living with improved mental health and appropriate community mobility. It is also defined as the process that involves a complex interaction of the person with his/ her environment. There are four trajectories in terms with resilience. Fifty percent of people involved are resilient, 25 percent of them showed recovery, 12.8 percent showed delayed distress, and 12.5 percent have chronic dysfunction. This adaptation is definitely influenced by the surrounding social context since any environmental complication can lead to a decline in resilience. The more the environmental relations are, the simpler adaptation occurs. So, it is necessary to notice the communicative and environmental simplifiers in the rehabilitation program. Family and economic status have a significant role in the resilience of people with spinal cord injury. Resilient people with spinal cord injury have better adaptation and lower levels of depression while entering rehabilitation as well as show more acceptance of the disability during discharge and more satisfaction of their lives. The resilience is extensively impacted by the individual characteristics and social circumstances. The resilience is a multidimensional concept that includes contextual factors, social participation, and mental adaptation. Being a male, having a mild-to-moderate physical job, having a high academic level before the injury, and obtaining appropriate education after injury can lead to resilience and paid employment later. In contrast, misunderstanding of physical complications, passive personality, pessimism, and lack of psychosocial support from the family are barriers for being employed after injury. The less the family and environmental barriers are, the better mental health and adaptation is anticipated. Factors such as job and suitable education before the injury as well as optimism and positive attitude provide effective resilience later. Spirituality and self-control have a good prognosis for resilience. The supportive role of the environment, particularly of that of family members, is also important. Conclusion Resilience in spinal cord injury needs psychologically more attempt than the physical aspects, because it needs more time to adapt after a sudden accident. Spirituality, stress management strategies, optimism, and social support from family members and friends facilitate resilience. As resilience is impacted by the culture and environment, more studies on the explanation of the aspects related to the resilience of Iranian population is recommended.

Iranian journal of management sciences, Jun 22, 2018

‫مدیریت بازرگانی, 2014

Price fairness and price satisfaction is one the most important fields in pricing and also in cus... more Price fairness and price satisfaction is one the most important fields in pricing and also in customer satisfaction. In this research, first the dimensions of price fairness, price satisfaction, customer satisfaction, and customer loyalty are extracted from marketing literature, then five hypotheses are developed. In proposed model, price fairness has direct impact on price satisfaction, customer satisfaction and customer loyalty. Also, price satisfaction has direct impact on customer satisfaction and customer satisfaction has direct impact on customer loyalty. Statistical Society of this research is University of Tehran's Student and the number of samples is 379. Students are selected accidently for answering the questionnaire. Structural Equation Modeling is applied in this research. The results show that all of the hypotheses are strongly supported. It means that price fairness is one of the building blocks of the price satisfaction, customer satisfaction and customer loyalty...

2012 IEEE Symposium on Humanities, Science and Engineering Research, 2012

We study fuzzy differential equations (FDEs) using the strongly generalized differentiability con... more We study fuzzy differential equations (FDEs) using the strongly generalized differentiability concept. Utilizing the characterization problem, we present approximate solutions of FDEs under Generalized differentiability by an equivalent system of ODEs. Then we extend midpoint approximation method and give its error, which guarantees pointwise convergence. An illustrative example is given.

Journal of Rehabilitation, 2019

Objective Cerebral Palsy (CP) is a group of non-progressive disorders in a developing brain that ... more Objective Cerebral Palsy (CP) is a group of non-progressive disorders in a developing brain that results in motor problems and other limitations in daily living activities. The presence of motor functions in these children reduces their participation in daily activities. This is one of the important aspects of the child's health and development, especially the child's physical and psychological development. Participation in social activities promotes life satisfaction. Besides, family has a prominent role in identifying and supplying the child's needs. In other words, family plays an essential role in ensuring the health and well-being of their children. Thus, provisions of growth-related health services has now changed from a child-cantered model into a family-cantered model. As a result, it is very important to understand the parents' priorities about participation of their children in the daily activities and providing appropriate client-center services. Materials & Methods In this descriptive-analytic study, 78 children and teenagers with CP aged 3-18 years without psychiatric problems and their parents from Yazd City, Iran had participated. The samples were selected by convenience sampling method, from clients of private and public rehabilitation centers in Yazd Province. In this regard, one state and two private centers were randomly selected and the study samples were selected from the clients referred to the centers. Parents' priorities for participation of their children in activities of daily living were found through semi-structured interviews. In these interviews, we used Canadian occupational performance measure to evaluate the child's level of occupational performance and parents' satisfaction in the three areas of self-care, productiveness, leisure from the parents' perspective. In addition, the level of gross motor performance was evaluated based on the Gross Motor Function Classification System (GMFCS) at five levels. In the Iranian society, the validity of Canadian occupational performance measure for each of three areas of occupational performance has been reported to be between 9.75 and 3.75 and the reliability level for the three domains reported above 0.78. The statistical analysis of data was performed in SPSS V. 16. Descriptive statistics and odds ratio were used for analyzing the data. Results the children' Mean±SD age was 8.12±4.22 years. The first priority reported by the parents was self-care. Mobility was known as the second important priority in everyday life for children. The results obtained from the statistical analysis showed no significant relationship between age and different motor levels (P≥0.05). Conclusion Parents reported functional priorities in similar performance aspects by all age groups and GMFCS levels in Cerebral Palsy children. The first priority was related to self-care. This reflects the desire of the parents to children' doing self-care activities, which not only reduces care pressure, but also leads to promotion in social participation and independence in individual life. The next priority was mobility and the reason can be attributed to the fact that children with CP need mobility to manage their daily life activities.

Rudarsko-geološko-naftni zbornik, 2021

Underground coal mining is known as one of the major sources of methane emissions which mainly oc... more Underground coal mining is known as one of the major sources of methane emissions which mainly occurs after underground coal extraction. Rock strata in-situ methane can potentially be the most significant hazard in coal mining operations. To prevent or minimize the risks of methane emissions, methane drainage approaches have been adopted by coal mines. Rock mass methane drainage is the most efficient and effective approach toward controlling methane hazards as it prevents and reduces the frequency of methane emissions, outflows into the working area and sudden outbursts of methane and rocks. The method includes drilling boreholes from the tailgate side to the unstressed zone in the roof and floor strata above and below a working coal seam. The coal seam gas content in Tabas Parvadeh I is estimated to be about 16 m3 /t, which is relatively high. Based on exploration data, five distinct coal seams have been identified (B1, B2, C1, C2 and D) at the coal deposit and currently C1 is bein...

international journal of nano dimension, 2013

In this study, we describe the growth of carbon nanotubes on commercial iron nanoparticles withou... more In this study, we describe the growth of carbon nanotubes on commercial iron nanoparticles without carbon shell (Fe (nm), size <60 nm) andiron nanoparticles with carbon shell (Fe* (nm), size <60 nm) as catalysts by chemical vapour deposition method. In order to investigation of supports effects, preparation of catalyst nanopowders (Fe* (nm)/Al2O3 and Fe* (nm)/MgO) was carried out by mixing commercial Fe* nanoparticles (as catalyst) with Al2O3 and MgO powders (as supports)by using ball-milling method. The results show in spite of the fact that ballmilling process can have negative effects on diameter and morphology of synthesized CNTs at 925 ˚C, but it could increase the range of growth temperature from 865 ˚C to 975 ˚C.

The research explores a strategic control model by the emphasis on the green approach based on Si... more The research explores a strategic control model by the emphasis on the green approach based on Simons’ levers of control framework. Special consideration is paid for assessing how much green is the organization. The purpose of this paper is to design a strategic control model for Audit institute of social security organization of Iran. The data is gathered from social security organization and Audit institute of social security organization from Jan 2018-19. The research methodology is quantitative method. Five hypotheses were raised at this study. For collecting the required data a standard questionnaire was distributed among 52 managers of the organization and the collected data was analyzed with smart-PLS software. Levers of Control of Simons’ framework provide the theoretical background for strategic control. The results demonstrate that all four levers of control are positively associated with strategic control; while the strategic control, has a positive effect on latter varia...

Bracing as an inactive control system can play important role in structure resistance to side for... more Bracing as an inactive control system can play important role in structure resistance to side forces such as earthquake one of the best and economic methods of utilizing bracing capability is the use of their inflexible capacity. Finite element modeling of buckling restrained braced is so difficult because of complicate interaction between steel and concrete. In this study two finite element models of BRBs include model with and without concrete have created and verified with experimental results. The result of this study shows that the model without concrete can be used as an alternative of model with concrete. Keywords— Buckling restrained brace; Springs; Numerical modeling

There is a trend in the construction industry of adopting more and more relational type contracti... more There is a trend in the construction industry of adopting more and more relational type contracting methods, for example, project alliancing. In addition to this trend, there is increasing adoption of the lean construction principles. This paper explores the inherent relationship between project alliancing and lean construction in an attempt to highlight the similarities between this project delivery method and the lean methodology. Based on the literature studied and the performed interviews, this study shows that alliancing does in fact inherently align with some key lean construction principles. Particularly in the area of customer focus, culture and people, waste elimination, and continuous improvement. An understanding of how and where alliancing aligns with lean can lead to a better insight into how the model can be improved. Such knowledge could be useful to practitioners looking at incorporating more efficiencies into the alliancing model by introducing lean concepts

Introduction : The dynamic interaction between mother and infant is one of the indicative factors... more Introduction : The dynamic interaction between mother and infant is one of the indicative factors of infants’ social and emotional development especially in stressful situations as cognitive evaluating. Methods: An experimental study was completed in 2010 in Tehran on a total of 40 infants (18 boys and 22girls) forming two alternative groups and varying in age of infancy (4, 6, 8, 10 and 12 months). We used a 60 second mute popular “Tom & Jerry” animation to compare the infants’ attention in the presence or absence of mothers’ lap. Changes in orientation time, duration of sustained attention, and the total look duration were measured in terms of eye movement and heart rate changes through pulse oximeter. Furthermore, infants’ presence of general irritability in both conditions was observed. Results: We found that infants in their mothers’ laps showed more length of total look duration and sustained attention and less amount of general irritability than those sitting on baby seats. H...

Numerical Methods in Civil Engineering, 2016

There are varieties of techniques for calculating natural frequency of the structures. Neverthele... more There are varieties of techniques for calculating natural frequency of the structures. Nevertheless, these equations are less developed in the geotechnical structures such as slopes, buttress group, dams, and retaining walls. In earth dams, with respecting to the dimensions and weight of dam, soil-structure interaction is of prime importance for finding seismic parameters including natural frequency, deformation, and other parameters. To accomplish this objective and the inclusion of foundation flexibility, dam foundation was simulated using transition spring. in this research an equation is presented for calculating natural frequency of earth dam using analytical methods. The advantages of this method include more accurate estimation of seismic parameters as well as considering the flexibility of earth dams' foundation. Riley approximation method and shear-free shape function were used in the mathematical solution steps and the trend of gaining the proposed equation. Finally, the results obtained from the proposed equation were compared to those of finite element software GeoStudio-2007[9] and the correlation of responses was observed.

Journal of Rehabilitation, 2019

Objective Multiple Sclerosis (MS) is a chronic inflammatory, demyelinating, and neurodegenerative... more Objective Multiple Sclerosis (MS) is a chronic inflammatory, demyelinating, and neurodegenerative disorder of the Central Nervous System (CNS) and it is also the most common cause of non-traumatic neurological disability in young adults. MS in women, especially young women, is about 1.5 to 3 times more common than men all over the world. About 2.5 million people worldwide are suffering from MS. The destruction of myelin in certain areas exhibits certain signs and symptoms. Balance disorders are particularly problematic because they are associated with difficulty in moving from one position to another, sustaining an upright posture, and performing functional activities such as walking and turning, all of which predisposes people with MS to the loss of equilibrium and falls. Isfahan City in Iran suffers from a high prevalence of MS that put it amongst the regions with the highest prevalence of MS in Asia and Oceania. This study aimed to use the holistic approaches of occupational therapy to investigate the physical and cognitive factors (attention, cognition and muscle strength of lower extremities) that affect the gait of MS patients in the city of Isfahan, Iran. Materials & Methods The present study was a descriptive-correlational one and convenience sampling method was used to recruit the samples. The study population consisted of all patients with MS in Isfahan City in August 2017. A group of 70 patients (24 males and 46 females with the Mean±SD age of 32.20±7.55 y) met the inclusion-exclusion criteria and were enrolled in the study. To be eligible for the study, the patients had to meet the following inclusion criteria: having a neurologist-confirmed diagnosis of MS with MRI scan, being able to read and write, and walk at least 100 m independently. We excluded patients with cognitive impairments that might hinder understanding of the tasks to be accomplished, those with any comorbid neurologic condition other than MS, and those who are unwilling to collaborate with the research process. After providing sufficient information about the research process and getting informed consent of the patients, the questionnaires and tests were provided to the participants to be completed. The study tools were the Mini-Mental Status Examination (MMSE), 10 m Walking Test (10 MWT), Timed Up and Go test (TUG), Sit to Stand test, and Stroop test. For data analysis, the Pearson correlation coefficient and multiple regression analysis were performed in SPSS version 16. Results In this study, 70 patients suffering from MS participated. The results showed a significant negative correlation between the scores of walking speed test (10 m walking) and the scores of the functional strength of the lower extremities muscles (P<0.001) and attention (P=0.01). There is also a significant correlation between muscle strength of lower extremity and balance (P=0.01). Regression analysis shows that the muscle strength of lower extremities has the highest contributions in predicting the speed of walking in patients with MS. Conclusion According to the study findings, among the physical and cognitive factors affecting gait and balance such as muscle strength of lower extremity or cognition and attention, the muscle strength of lower extremity is the most important factor affecting the balance and speed of walking in patients with MS that still can walk. In the process of rehabilitation, especially in occupational therapy, special attention must be paid to a muscle strengthening program for the lower extremities of patients suffering from MS.

Journal of Medical Education Development, 2018

Background & Objectives: Interprofessional learning (IPL) can create more collaborations among st... more Background & Objectives: Interprofessional learning (IPL) can create more collaborations among students of different healthcare disciplines. However, this depends on the tendency of students to learn from each other. Given the fact that the attitude of students is recognized as the major factor for the implementation and success of a program, this study aimed to determine the attitude of final-year students in fields of medicine, nursing, and midwifery of Iran University of Medical Sciences, Tehran, Iran toward the implementation of IPL. Materials and Methods: This descriptive and cross-sectional research was conducted on 200 final-year students in the fields of medicine, nursing, and midwifery, who were active in clinical settings and had work experiences in clinical environments. In this research, data were collected using the valid and reliable readiness for inter-professional learning scale (RIPLS), and subjects were selected through convenience sampling. Results: From 200 distributed scales, about 180 questionnaires (response rate=90%) were returned, 80 and 100 of which were filled by students in the fields of medicine, nursing and midwifery, respectively. According to the results, 50.6% of the respondents were female and 49.4% were male. Moreover, mean (standard deviation) total score of the evaluated students was equal to 79.8 (SD=92). Considering the obtaining of a score higher than the desired level by students (57), it could be concluded that the subjects had a positive attitude toward IPL. While the results were indicative of no significant difference between the two medicine and nursing-midwifery groups in terms of preparedness for IPL (P=0.4), there was a significant difference in the subcategory of cooperation and teamwork (P=0.001). In this regard, medical students obtained a lower score, compared to the nursing and midwifery students. Conclusion: According to the results of the study, the subjects had a proper attitude toward IPL, which itself is the most important support for the entrance of this new educational approach in student curriculums.

Environmental pollution (Barking, Essex : 1987), 2018

Cs-137 is considered to be the most significant anthropogenic contributor to human dose and prese... more Cs-137 is considered to be the most significant anthropogenic contributor to human dose and presents a particularly difficult remediation challenge after a dispersal following nuclear incident. The Chernobyl Nuclear Power Plant meltdown in April 1986 represents the largest nuclear accident in history and released over 80 PBq of Cs into the environment. As a result, much of the land in close proximity to Chernobyl, which includes the Polessie State Radioecology Reserve in Belarus, remains highly contaminated with Cs to such an extent they remain uninhabitable. Whilst there is a broad scale understanding of the depositional patterns within and beyond the exclusion zone, detailed mapping of the distribution is often limited. New developments in mobile gamma spectrometry provide the opportunity to map the fallout of Cs and begin to reconstruct the depositional environment and the long-term behaviour of Cs in the environment. Here, full gamma spectrum analysis using algorithms based on t...

Annals of biomedical engineering, 2018

Investigation of the development of cartilage degeneration after ACL reconstruction is important ... more Investigation of the development of cartilage degeneration after ACL reconstruction is important for improving current surgical treatment of ACL injuries to prevent long-term knee joint degeneration. This pilot study examined the relationship between the changes in weight-bearing knee contact kinematics 6 months after ACL reconstruction and the biochemical composition changes in the knee cartilage measured using T2 relaxation values 3 years after the surgery in seven patients. The analysis indicated that the change of the knee contact kinematics in short-term after ACL reconstruction is associated with an increase of T2 values of the cartilage in longer follow up times. The data of this study could provide preliminary data to power future studies that use prospective, longitudinal research and large patient populations to establish prognostic biomechanical markers for determination of long-term cartilage degeneration after ACL reconstruction.

The Journal of Hand Surgery (Asian-Pacific Volume), 2018

Background: To investigate the role of psychological factors (anxiety and depression) and pain me... more Background: To investigate the role of psychological factors (anxiety and depression) and pain measured on a visual analogue scale (VAS) in the development of complex regional pain syndrome type I (CRPS I) following the distal radius fracture (DRF). Methods: A consecutive sample of patients (N=60) with a distal radius fracture was measured for signs of CRPS by Budapest criteria weekly till 8 weeks and then another follow-up one year after injury to determine the incidence and predictors of developing CRPS I in a prospective cohort study and also to discover whether there is difference between pain, depression, and anxiety level in the patients with and without CRPS I. The most of the patients were treated by Pin stabilization. The Beck depression inventoryshort form (BDI), State-Trait Anxiety Inventory, and Numerical pain rating scale were used to determine the patients’ psychological features and pain intensity at the base line and 8 weeks after the fracture. Results: CRPS I develo...

The Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2007

Construction and Building Materials, 2017

h i g h l i g h t s The moisture susceptibility of GFM-WMA mixtures containing RAP was evaluated.... more h i g h l i g h t s The moisture susceptibility of GFM-WMA mixtures containing RAP was evaluated. The rutting resistance of GFM-WMA containing RAP was evaluated. The effect of short term aging on performance of mixtures was evaluated.

Journal of Rehabilitation, 2016

Objective Rehabilitation of the spinal cord injury is a continuous process needing adaptation in ... more Objective Rehabilitation of the spinal cord injury is a continuous process needing adaptation in all aspects of life. Successful adaptation to challenging situations is called "resilience". Occupational therapists can help the person reconstruct his/ her identity and adapt by improving their resilience. It is also extensive and diverse in concept and definition. It is extremely influenced by the culture and environment. This study aims to narratively review the evidences published on the aspects related to the resilience of people with spinal cord injury. Materials & Methods Comprehensive electronic search of keywords including "spinal cord injury", "resilience" and "adaptation" was done via Google Scholar, PubMed, Scopus, ScienceDirect and Pro Quest and IranMedex to find related articles published within 2000-2015 according to inclusion criteria. From the initially obtained 1823 articles, 1756 articles were omitted due to failure to satisfy the inclusion criteria or being repetitions. After actors underlying resilience and 4 and 5 articles focused on social participation and psychosocial adaptation after spinal cord injury in respect. Results As seen from the included documents, there are various definitions of resilience. Resilience was defined as coping with the conditions after spinal cord injury such that the person takes in his/ her activities of daily living with improved mental health and appropriate community mobility. It is also defined as the process that involves a complex interaction of the person with his/ her environment. There are four trajectories in terms with resilience. Fifty percent of people involved are resilient, 25 percent of them showed recovery, 12.8 percent showed delayed distress, and 12.5 percent have chronic dysfunction. This adaptation is definitely influenced by the surrounding social context since any environmental complication can lead to a decline in resilience. The more the environmental relations are, the simpler adaptation occurs. So, it is necessary to notice the communicative and environmental simplifiers in the rehabilitation program. Family and economic status have a significant role in the resilience of people with spinal cord injury. Resilient people with spinal cord injury have better adaptation and lower levels of depression while entering rehabilitation as well as show more acceptance of the disability during discharge and more satisfaction of their lives. The resilience is extensively impacted by the individual characteristics and social circumstances. The resilience is a multidimensional concept that includes contextual factors, social participation, and mental adaptation. Being a male, having a mild-to-moderate physical job, having a high academic level before the injury, and obtaining appropriate education after injury can lead to resilience and paid employment later. In contrast, misunderstanding of physical complications, passive personality, pessimism, and lack of psychosocial support from the family are barriers for being employed after injury. The less the family and environmental barriers are, the better mental health and adaptation is anticipated. Factors such as job and suitable education before the injury as well as optimism and positive attitude provide effective resilience later. Spirituality and self-control have a good prognosis for resilience. The supportive role of the environment, particularly of that of family members, is also important. Conclusion Resilience in spinal cord injury needs psychologically more attempt than the physical aspects, because it needs more time to adapt after a sudden accident. Spirituality, stress management strategies, optimism, and social support from family members and friends facilitate resilience. As resilience is impacted by the culture and environment, more studies on the explanation of the aspects related to the resilience of Iranian population is recommended.