This paper aims to replicate and expand an earlier study that constructed a measurement of international managers’ mindset.
Abstract
Purpose
This paper aims to replicate and expand an earlier study that constructed a measurement of international managers’ mindset.
Design/methodology/approach
The paper used a test-retest statistical analysis to determine the reliability of the index of the managerial mindset developed by Fatehi and Ghadar (2014).
Findings
The study showed that the index is a sound measurement. It has good content validity. Its reliability is excellent. Both overall measure and item by item test of reliability were sound at a 5% significant level.
Originality/value
The application of Cronbach alpha by Fatehi and Ghadar (2014) indicated that the index was reliable. However, recently some scholars have expressed their concerns about this test to determine psychological indexes’ reliability. Therefore, this replication study applied an alternative reliability test (test-rest). The test-retest application indicated the index’s soundness.
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Sepideh Pourhashem, Alimorad Rashidi and Mohammad Reza Vaezi
In this research, the effect of graphene nanosheets and graphene quantum dots (GQDs) as carbon-based nanofillers on corrosion protection performance of epoxy coatings is…
Abstract
Purpose
In this research, the effect of graphene nanosheets and graphene quantum dots (GQDs) as carbon-based nanofillers on corrosion protection performance of epoxy coatings is considered.
Design/methodology/approach
Graphene nanosheets are synthesized via chemical vapor deposition method, and GQDs are synthesized by a simple and gram scale procedure from carbon black. The prepared nanofillers are characterized by X-ray diffraction technique, Fourier transform infrared spectroscopy and transmission electron microscopy. Further, solvent-based epoxy coatings containing 0.1 Wt.% graphene nanosheets and GQDs are prepared, and the corrosion resistance of nanocomposite coatings is considered by electrochemical impedance spectroscopy.
Findings
The results indicate that both epoxy/graphene nanosheets and epoxy/GQDs samples have significantly higher corrosion resistance than pure epoxy coating. Meanwhile, GQDs can more effectively enhance the corrosion protection performance of epoxy coatings compared to graphene sheets, which can be attributed to the presence of functional groups on GQDs and improving the dispersion quality in polymer matrice.
Originality/value
In this research, for the first time, the graphene quantum dots (GQDs) prepared by a “top-down” method from carbon black are used as nanofiller in epoxy coatings, and the potential application of graphene nanosheets and GQDs as anti-corrosion nanofiller in epoxy coatings is investigated.
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Soudabeh Vahdati, Mir Ali Seyyed Naghavi, Reza Vaezi and Fattah Sharifzadeh
The purpose of this study is to discover the components of virtual leadership in universities and higher education institutions during Covid-19 pandemic.
Abstract
Purpose
The purpose of this study is to discover the components of virtual leadership in universities and higher education institutions during Covid-19 pandemic.
Design/methodology/approach
This research uses the qualitative research design, and semi-structured interviews with senior leaders were conducted with non-random purposeful and snowball sampling methods. Also, grounded theory was used for analyzing, coding and classifying the data.
Findings
After analyzing data, five main components influencing virtual leadership including leader's personality traits, followers' characteristics, technological, environmental and organizational components were identified.
Research limitations/implications
As leadership, particularly virtual leadership, highly depends on context such as the level of technology in that certain region, the results cannot be generalized to other sectors or countries.
Originality/value
The research advances leadership development theory by highlighting the main components of virtual leadership in educational sector as a comprehensive perspective and complement the other aspects of virtual leadership such as consequences and challenges investigated by other studies.
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Hossein Shakibaei, Mohammad Reza Farhadi-Ramin, Mohammad Alipour-Vaezi, Amir Aghsami and Masoud Rabbani
Every day, small and big incidents happen all over the world, and given the human, financial and spiritual damage they cause, proper planning should be sought to deal with them so…
Abstract
Purpose
Every day, small and big incidents happen all over the world, and given the human, financial and spiritual damage they cause, proper planning should be sought to deal with them so they can be appropriately managed in times of crisis. This study aims to examine humanitarian supply chain models.
Design/methodology/approach
A new model is developed to pursue the necessary relations in an optimal way that will minimize human, financial and moral losses. In this developed model, in order to optimize the problem and minimize the amount of human and financial losses, the following subjects have been applied: magnitude of the areas in which an accident may occur as obtained by multiple attribute decision-making methods, the distances between relief centers, the number of available rescuers, the number of rescuers required and the risk level of each patient which is determined using previous data and machine learning (ML) algorithms.
Findings
For this purpose, a case study in the east of Tehran has been conducted. According to the results obtained from the algorithms, problem modeling and case study, the accuracy of the proposed model is evaluated very well.
Originality/value
Obtaining each injured person's priority using ML techniques and each area's importance or risk level, besides developing a bi-objective mathematical model and using multiple attribute decision-making methods, make this study unique among very few studies that concern ML in the humanitarian supply chain. Moreover, the findings validate the results and the model's functionality very well.
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Alireza Khalili-Fard, Reza Tavakkoli-Moghaddam, Nasser Abdali, Mohammad Alipour-Vaezi and Ali Bozorgi-Amiri
In recent decades, the student population in dormitories has increased notably, primarily attributed to the growing number of international students. Dormitories serve as pivotal…
Abstract
Purpose
In recent decades, the student population in dormitories has increased notably, primarily attributed to the growing number of international students. Dormitories serve as pivotal environments for student development. The coordination and compatibility among students can significantly influence their overall success. This study aims to introduce an innovative method for roommate selection and room allocation within dormitory settings.
Design/methodology/approach
In this study, initially, using multi-attribute decision-making methods including the Bayesian best-worst method and weighted aggregated sum product assessment, the incompatibility rate among pairs of students is calculated. Subsequently, using a linear mathematical model, roommates are selected and allocated to dormitory rooms pursuing the twin objectives of minimizing the total incompatibility rate and costs. Finally, the grasshopper optimization algorithm is applied to solve large-sized instances.
Findings
The results demonstrate the effectiveness of the proposed method in comparison to two common alternatives, i.e. random allocation and preference-based allocation. Moreover, the proposed method’s applicability extends beyond its current context, making it suitable for addressing various matching problems, including crew pairing and classmate pairing.
Originality/value
This novel method for roommate selection and room allocation enhances decision-making for optimal dormitory arrangements. Inspired by a real-world problem faced by the authors, this study strives to offer a robust solution to this problem.
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Arefeh Rahaei and Reza Salehzadeh
The purpose of this study is to evaluate the impact of psychological entitlement and perceived organizational justice on cyberloafing.
Abstract
Purpose
The purpose of this study is to evaluate the impact of psychological entitlement and perceived organizational justice on cyberloafing.
Design/methodology/approach
In this study, a cross-sectional research design based on a questionnaire method was used to collect the required data from a sample of 226 employees working at selected universities in the city of Isfahan, Iran. To test the research hypotheses, structural equation modeling was used.
Findings
According to the findings, psychological entitlement could have a significant impact on perceived organizational justice and consequently perceived organizational justice could significantly influence cyberloafing. Moreover, psychological entitlement could significantly influence cyberloafing and finally, psychological entitlement could have a significant effect on cyberloafing through perceived organizational justice.
Originality/value
This research provides valuable insight for studying the relationship among psychological entitlement, perceived organizational justice and cyberloafing.
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Mojtaba Jafari, Abbas Ebadi, Hamid Reza Khankeh, Sadat Seyed Bagher Maddah and MohammadAli Hosseini
The uniqueness of the pre-hospital setting and the need for quick decision-making confronts pre-hospital emergency personnel with various moral conflicts that can lead to moral…
Abstract
Purpose
The uniqueness of the pre-hospital setting and the need for quick decision-making confronts pre-hospital emergency personnel with various moral conflicts that can lead to moral distress (MD) in them. This study aimed to design a valid scale for the assessment of MD in emergency medical service (EMS) staff.
Design/methodology/approach
This exploratory mixed-method study was conducted among the EMS provider's community. In the qualitative section, data were gathered and analyzed with semi-structured interviews and conventional content analysis, respectively. The initial pool of items was formed and the primary scale was designed. In the quantitative section, a methodological study was carried out to determine the psychometric properties of the scale including qualitative-quantitative face validity, qualitative-quantitative content validity with content validity ratio and index (CVR/CVI), construct validity by exploratory factor analysis (EFA), and convergent validity, internal consistency (Cronbach's alpha/ Omega McDonald's/ floor and ceiling effect) and stability with intra-class correlation (ICC).
Findings
After interviews with 14 emergency technicians, the initial scale was designed with 60 items. Of the total items, 17 poor items were dropped during face and qualitative content validity. In the content validity phase, the items with CVR > 0.62, modified Kappa > 0.74 were retained, which eliminated 23 items. EFA was conducted with 20 items and lead to the 5 factors. The floor and ceiling effect for the whole scale was zero. Finally, the reliability of the scale was confirmed (a = 0.83, O = 0.86, ICC = 0.95).
Originality/value
The developed 20-item scale is a valid and reliable scale for the assessment of the MD in EMS providers.
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Qianmai Luo, Chengshuang Sun, Ying Li, Zhenqiang Qi and Guozong Zhang
With increasing complexity of construction projects and new construction processes and methods are adopted, more safety hazards are emerging at construction sites, requiring the…
Abstract
Purpose
With increasing complexity of construction projects and new construction processes and methods are adopted, more safety hazards are emerging at construction sites, requiring the application of the modern risk management methods. As an emerging technology, digital twin has already made valuable contributions to safety risk management in many fields. Therefore, exploring the application of digital twin technology in construction safety risk management is of great significance. The purpose of this study is to explore the current research status and application potential of digital twin technology in construction safety risk management.
Design/methodology/approach
This study followed a four-stage literature processing approach as outlined in the systematic literature review procedure guidelines. It then combined the quantitative analysis tools and qualitative analysis methods to organize and summarize the current research status of digital twin technology in the field of construction safety risk management, analyze the application of digital twin technology in construction safety risk management and identify future research trends.
Findings
The research findings indicate that the application of digital twin technology in the field of construction safety risk management is still in its early stages. Based on the results of the literature analysis, this paper summarizes five aspects of digital twin technology's application in construction safety risk management: real-time monitoring and early warning, safety risk prediction and assessment, accident simulation and emergency response, safety risk management decision support and safety training and education. It also proposes future research trends based on the current research challenges.
Originality/value
This study provides valuable references for the extended application of digital twin technology and offers a new perspective and approach for modern construction safety risk management. It contributes to the enhancement of the theoretical framework for construction safety risk management and the improvement of on-site construction safety.