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Article
Publication date: 29 September 2022

Mohammad Reza Mohammadi, Seyed-Ali Mostafavi and Aref Khalkhali

Nutrition Bio Shield (NBS) supplement is a natural product that is processed from whole wheat grains. This study aims to determine its effects on depression, anxiety, stress and…

Abstract

Purpose

Nutrition Bio Shield (NBS) supplement is a natural product that is processed from whole wheat grains. This study aims to determine its effects on depression, anxiety, stress and food craving in women with depression and obesity in a double-blind randomized clinical trial.

Design/methodology/approach

Fifty-six eligible clients with body mass index ≥ 25 and mild or moderate depression signed the informed consent form. They were randomly assigned to receive daily 5 g of NBS or placebo. The assessments included the depression, anxiety and stress-21 questionnaire, food craving questionnaire, visual analogue scale for appetite, precise anthropometric measurements and body composition analyses. The assessments were conducted at the baseline and repeated after four and eight weeks. One month after the study completion, the participants’ weight was assessed. The authors analyzed the data by independent sample t-test, repeated measures analysis of variance and multivariate analyses of covariance (MANCOVA).

Findings

At the baseline, no significant differences were observed between the groups regarding the main and demographic variables. After four weeks, stress reduced significantly in the NBS group (p = 0.04), and after eight weeks, anxiety (p = 0.02), stress (p = 0.008) and food craving (p = 0.05) reduced significantly in the NBS group compared with the placebo. After controlling for the demographic variables and baseline measurements, MANCOVA model revealed a significant effect of NBS in reducing anxiety (Eta-squared = 0.28; p = 0.001) and stress (Eta-squared = 0.19; p = 0.009). Fisher’s exact test showed no significant difference regarding side effects between NBS and placebo (p = 0.47).

Originality/value

NBS supplement is a patent and natural product that is processed from whole wheat grains. This product was efficient in reducing stress and anxiety after controlling for demographic variables and baseline measurements compared with the placebo and was safe.

Details

Nutrition & Food Science , vol. 53 no. 5
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 23 September 2022

Amir Amjad Mohammadi, Hadi Safaeipour, Mohammad Reza Chenaghlou, Alireza Behnejad and Roham Afghani Khoraskani

This paper aims at discovering the traditional techniques of Persian architecture for covering large-span spaces with a kind of ribbed vault titled “Karbandi”. This structure is…

Abstract

Purpose

This paper aims at discovering the traditional techniques of Persian architecture for covering large-span spaces with a kind of ribbed vault titled “Karbandi”. This structure is generated by intersecting several arches with a harmonic stellar geometry. Preliminary studies show that span factor affects the structural form of karbandi and large-span cases, despite similar architectural forms, have different structural systems and specific construction methods. The main focus of this paper is how karbandi has been designed and built on large-spans. To answer this question, the configuration and construction of a large-span karbandi in Tabriz Bazaar were recognized.

Design/methodology/approach

Data collection of the research was initially done in three parallel directions through the archival study of restoration documents, direct observation of the corpus of the vaultings and interviews with the master mason of the Haj-Mohammad-Qoli Timche restoration team. Then by cross-referencing the gathered data, the construction process of the karbandi was simulated in Rhino 6 and Grasshoppers software and its BIM-M models were created in three levels of development: LOD300, LOD350 and LOD400. In the next step, the preliminary BIM-M models of the karbandi were presented to the interviewed mason and revised and completed based on his comments.

Findings

Analyzing the BIM models by reverse engineering, resulted in (1) Discovering a unique self-supporting masonry construction method applied for the erection of karbandi vaulting on large-spans. (2) Finding the effect of scale factor on the architectural and structural form of the karbandi vault. (3) Discovering the connection types of the karbandi vault based on the construction details.

Originality/value

Despite the wide applications of karbandi vaults throughout history, very little information of their construction techniques is available. The techniques have mostly been experientially and orally passed down from masters to apprentices and rarely been documented. The quest to design and construct a karbandi vault is therefore like solving a puzzle whose most important guide is historical cases. Due to the geometric complexity of karbandi and its ability to cover large-span spaces, solving the puzzle can lead to achieving some technical ideas for masonry cross-ribbed vaulting. A great riddle of the karbandi vaults is how to design and build them on a large span.

Details

Engineering, Construction and Architectural Management, vol. 31 no. 1
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 9 April 2018

Mohsen Mohammadi, Mohammad Rahim Eivazi, Gholam Reza Goudarzi and Einollah Keshavarz Turk

Various theoretical studies were carried out which attempted to identify impacting factors of cultural changes; however, these studies ignored the correlation among other…

Abstract

Purpose

Various theoretical studies were carried out which attempted to identify impacting factors of cultural changes; however, these studies ignored the correlation among other affecting factors all together. In this paper, the authors aim not only to discuss the hidden layers that trigger the cultural changes but also to answer the questions of how to identify the main factors in each layer based on casual layered analysis (CLA), which could have a strong impact in shaping other layers’ factors? What are the dominant metaphors and worldviews that human beings are telling themselves about our universe that influences the future cultural changes?

Design/methodology/approach

To answer the questions of “how to identify the main factors in each layer,” the CLA methodology was used to investigate the underlying reasons. CLA takes into account four layers (litany, social systems, dominant discourse and worldviews and metaphors), which could be a tremendous help in identifying the mentioned factors.

Findings

The analysis shows that there are some contributing factors such as economy, technology, politics, society, environment, mass media, globalization and migration at the second layer – “social systems layer” – which may trigger cultural changes in first layer “litany”; in addition, in the third and deeper layer two dominant worldviews – materialist/secular and religious affecting the contributing factors in the second layer – were identified. Such worldviews are, in turn, supported by metaphors or perfect stories/myths of the deepest layer.

Originality/value

It can be concluded that because the cultural changes as a reality is composed of different layers, it is important to dig into different layers of reality to comprehend the significant shaping factors of that reality to visualize and make the better future.

Details

foresight, vol. 20 no. 2
Type: Research Article
ISSN: 1463-6689

Keywords

Article
Publication date: 8 May 2017

Satar Rezaei, Behzad Karami Matin, Mohammad Hajizadeh, Ali Soroush, Zahra Mohammadi, Maryam Babakhany and Khadije Jamshidi

Education is a human right and access to high quality education is key to sustainable socioeconomic development. Improving the quality of higher education institutes is essential…

Abstract

Purpose

Education is a human right and access to high quality education is key to sustainable socioeconomic development. Improving the quality of higher education institutes is essential for generating the productive human resources. Assessing the quality of higher education from the students’ perspective can be considered a crucial factor in the monitoring of service quality in universities. The purpose of this paper is to evaluate the quality of educational services in a higher education institute, the Kermanshah University of Medical Sciences (KUMS), in the west of Iran.

Design/methodology/approach

A multistage sampling method was used to select 346 students from the KUMS, who were enrolled in the second semester of the academic year 2015-2016. The SERVQUAL questionnaire was used to gather data on students’ perceptions and their expectations about the quality of educational services. The authors used a statistical significance level of 0.05 to examine the gap between the students’ expectations and their perceptions of service quality in five dimensions, namely tangibles, responsiveness, reliability, empathy and assurance.

Findings

The results showed that there was a negative service quality gap in all five dimensions. The overall mean score of students’ expectations and their perceptions was 3.19±0.44 and 2.4±0.45, respectively. The score gap between the overall mean score of perceptions and expectations of students was −0.79, which was statistically significant (p<0.0001). The highest and lowest quality gaps were related to the assurance (−0.84) and tangible (−0.70) dimensions, respectively.

Originality/value

The study indicated that the quality of educational services provided in the KUMS did not meet students’ expectations in five dimensions of service quality. Thus, it warrants further investigations to determine how to improve the quality of educational services in higher education institutes such as the KUMS.

Details

International Journal of Human Rights in Healthcare, vol. 10 no. 2
Type: Research Article
ISSN: 2056-4902

Keywords

Article
Publication date: 28 January 2020

Mohammad Saeid Atabaki, Seyed Hamid Reza Pasandideh and Mohammad Mohammadi

Lot-sizing is among the most important problems in the production and inventory management field. The purpose of this paper is to move one step forward in the direction of the…

Abstract

Purpose

Lot-sizing is among the most important problems in the production and inventory management field. The purpose of this paper is to move one step forward in the direction of the real environment of the dynamic, multi-period, lot-sizing problem. For this purpose, a two-warehouse inventory system, imperfect quality and supplier capacity are simultaneously taken into consideration, where the aim is minimization of the system costs.

Design/methodology/approach

The problem is formulated in a novel continuous nonlinear programming model. Because of the high complexity of the lot-sizing model, invasive weed optimization (IWO), as a population-based metaheuristic algorithm, is proposed to solve the problem. The designed IWO benefits from an innovative encoding–decoding procedure and a heuristic operator for dispersing seeds. Moreover, sequential unconstrained minimization technique (SUMT) is used to improve the efficiency of the IWO.

Findings

Taking into consideration a two-warehouse system along with the imperfect quality items leads to model nonlinearity. Using the proposed hybrid IWO and SUMT (SUIWO) for solving small-sized instances shows that SUIWO can provide satisfactory solutions within a reasonable computational time. In comparison between SUIWO and a parameter-tuned genetic algorithm (GA), it is found that when the size of the problem increases, the superiority of SUIWO to GA to find desirable solutions becomes more tangible.

Originality/value

Developing a continuous nonlinear model for the concerned lot-sizing problem and designing a hybrid IWO and SUMT based on a heuristic encoding–decoding procedure are two main originalities of the present study.

Details

Journal of Modelling in Management, vol. 15 no. 4
Type: Research Article
ISSN: 1746-5664

Keywords

Article
Publication date: 6 February 2017

Mohammad Reza Jalilvand, Sirous Salimipour, Mehdi Elyasi and Mehdi Mohammadi

Restaurants with limited promotion budgets depend mainly on word of mouth (WOM) among customers. WOM seems particularly important to the marketing of services. This is because…

11933

Abstract

Purpose

Restaurants with limited promotion budgets depend mainly on word of mouth (WOM) among customers. WOM seems particularly important to the marketing of services. This is because services are experiential in nature and difficult to assess before purchase. In the restaurants context there is little research on WOM. The purpose of this paper is to examine the factors that may influence tourists’ WOM about restaurants implying on the critical role of relationship quality.

Design/methodology/approach

A comprehensive literature review is conducted to identify the major factors influencing WOM in the context of restaurant industry. The study utilizes self-administered questionnaire survey and the target population are the customers who have referred to the restaurants of Tehran, Iran. A convenience sampling approach was utilized to collect a sample of 326 customers. A structural equation modeling procedure is applied to the examination of the antecedents of WOM.

Findings

The paper found that food quality, personal interaction quality, physical environment quality, and perceived value influence WOM behavior of customer in an indirect way through relationship quality.

Practical implications

This research conjectured that an understanding of factors that influence the tourist to talk each other about a given restaurant are worthy of additional research. Consequently, the study helps to understand how these factors can provide alternative sources of marketing to attract the long-term economic sustainability of restaurant industry in Iran.

Originality/value

To the authors’ knowledge, this research will be the first attempt to explore influential factors on WOM in restaurant industry focusing on the critical role of relationship quality. It is expected that researchers will find this research a contribution to the WOM literature, particularly in restaurant industry.

Details

Marketing Intelligence & Planning, vol. 35 no. 1
Type: Research Article
ISSN: 0263-4503

Keywords

Article
Publication date: 22 May 2020

Mohammad Reza Saffarian, Farzad Jamaati, Amin Mohammadi, Fatemeh Gholami Malekabad and Kasra Ayoubi Ayoubloo

This study aims to evaluate the amount of entropy generation around the NACA 0012 airfoil. This study takes place in four angles of attack of 0°, 5°, 10° and 16° and turbulent…

Abstract

Purpose

This study aims to evaluate the amount of entropy generation around the NACA 0012 airfoil. This study takes place in four angles of attack of 0°, 5°, 10° and 16° and turbulent regime. Also, the variation in the amount of generated entropy by the changes in temperature and Mach number is investigated.

Design/methodology/approach

The governing equations are solved using computational fluid dynamics techniques. The continuity, momentum and energy equations and the equations of the SST k-ω turbulence model are solved. The entropy generation at different angles of attack is calculated and compared. The effect of various parameters in the generation of entropy is presented.

Findings

Results show that the major part of the entropy generation is at the tip of the airfoil. Also, increasing the angle of attack will increase the entropy generation. Also, results show that with increasing the temperature of air colliding with the airfoil, the production of entropy decreases.

Originality/value

Entropy generation is investigated in the NACA 0012 airfoil at various angles of attack and turbulent flow using the SST turbulence model. Also, the effects of temperature and Mach number on the entropy generation are investigated.

Details

Aircraft Engineering and Aerospace Technology, vol. 92 no. 7
Type: Research Article
ISSN: 1748-8842

Keywords

Abstract

Details

Principles and Fundamentals of Islamic Management
Type: Book
ISBN: 978-1-78769-674-7

Open Access
Article
Publication date: 11 April 2023

Vahid Mohamad Taghvaee, Abbas Assari Arani, Mehrab Nodehi, Jalil Khodaparast Shirazi, Lotfali Agheli, Haji Mohammad Neshat Ghojogh, Nafiseh Salehnia, Amir Mirzaee, Saeed Taheri, Raziyeh Mohammadi Saber, Hady Faramarzi, Reza Alvandi and Hosein Ahmadi Rahbarian

This study aims to assess and decompose the sustainable development using the 17 sustainable development goals (SDGs) in Iran in 2018, for proposing agenda-setting of public…

6931

Abstract

Purpose

This study aims to assess and decompose the sustainable development using the 17 sustainable development goals (SDGs) in Iran in 2018, for proposing agenda-setting of public policy.

Design/methodology/approach

It ranks the SDGs not only in Iran but also in the region and the world to reveal the synergetic effects.

Findings

Based on the results, subaltern-populace generally suffers from the hegemonic domination of ruling elite-bourgeois, lack of strong institutions, heterogeneous policy networks and lack of advocacy role of non-governmental organizations, due to no transparency, issues in law or no rule of law, no stringent regulation, rent, suppression and Mafia, all leading to corruption and injustice.

Practical implications

To stop the loop of corruption-injustice, Iran should homogenize the structure of the policy network. Furthermore, the failed SDGs of the three-geographic analysis are the same in a character; all of them propose SDG 3, good health and well-being as a serious failed goal.

Social implications

In this regard, strong evidence is the pandemic Coronavirus, COVID 19 since 2019, due to its highly-disastrous consequences in early 2020 where the public policymakers could not adopt policies promptly in the glob, particularly in Iran.

Originality/value

In Iran, in addition to this, the malfunction of health is rooted in “subjective well-being” and “traffic deaths,” respectively. Concerning the transportations system in Iran, it is underscored that it is damaging the sustainable development from all the three pillars of sustainable development including, economic, social and environmental.

Details

Review of Economics and Political Science, vol. 8 no. 2
Type: Research Article
ISSN: 2356-9980

Keywords

Article
Publication date: 7 March 2019

Hamidreza Hashemi Moghadam, Seyyed Mohammad Reza Adel, Saeed Ghaniabadi and Seyyed Mohammad Reza Amirian

Informed by the Bourdieusian construct of the social field, the purpose of this paper is to explore how different aspects of the educational field and the sub-field of English…

Abstract

Purpose

Informed by the Bourdieusian construct of the social field, the purpose of this paper is to explore how different aspects of the educational field and the sub-field of English language teaching in Iran influence diverse components of the professional identity of high school EFL teachers. To this aim, the impact of the power hierarchization structure, distribution of capitals and field autonomy, as important aspects of the social field theory, is investigated in relation to Iranian EFL teachers’ professional identity construction.

Design/methodology/approach

Van Manen’s (1990) hermeneutic phenomenological research method was adopted to analyze the data obtained through the semi-structured interviews and reflexive journals from 15 Iranian EFL teachers at high schools.

Findings

The hermeneutic phenomenological analysis of the data yielded to the extraction of one global, three organizing and six basic themes. The global theme was the educational field and professional identity. The resulting organizing themes were: first, autonomous field and teachers’ commitment; second, asymmetric power relation and teachers’ autonomy; and, finally, cultural capital and teachers’ motivation. This study revealed how the complex and multi-dimensional nature of the power relations between the field of education and power influenced the professional identity of EFL teachers.

Research limitations/implications

This dynamic representation of the inherent complexities of the educational context contributes to a more profound understanding of the role of the micro and macro contextual factors in formulating teachers’ professional identity. The implications of this study are further explained.

Originality/value

Hereby, the authors declare that all the procedures of data collection and analysis have been just done by the researchers.

Details

Qualitative Research Journal, vol. 19 no. 2
Type: Research Article
ISSN: 1443-9883

Keywords

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