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1 – 10 of 15Ola A. Abu Ali, M.M. Elsawy and Ahmed A. El-Henawy
The purpose of this study is to develop a new protective coating formulation for industrial use, using new eco-friendly succinimide linseed oil resin.
Abstract
Purpose
The purpose of this study is to develop a new protective coating formulation for industrial use, using new eco-friendly succinimide linseed oil resin.
Design/methodology/approach
Epoxidized linseed oil and N-(4-hydroxy phenyl) succinimide are reacted to create succinimide-modified epoxy (SIE) compounds. The synthesized compound was confirmed by different analyses, gas chromatography, Fourier transform infrared, proton nuclear magnetic resonance and scanning electron microscopy. The prepared compound has been blended with a primer paint formulation, then their physical and mechanical properties have been studied. Density function theory is used to calculate Frontier molecular orbital including highest occupied molecular orbital and least unoccupied molecular orbital to indicate the charge transfer from molecule to biological media and molecular electrostatic potential map was used to indicate the chemically reactive zone suitable for drug action.
Findings
The results of the paint formulation confirmed their best performance and provided good mechanical properties and high chemical and corrosion resistance.
Research limitations/implications
Resin compounds are the most used antimicrobial additives. Other functionalities of these compounds, such as corrosion inhibitors, might be studied to see if they are suited for these applications.
Practical implications
Because of the efficiency of the SIE when incorporated with primer, paint against microbial has also been examined in silico using the docking study which contributed to the analysis of their protein binding. This type of epoxy compound is environmentally friendly and can be used as a biocide with different paint formulations. As a result, paint compositions including this compound as additives can be used as dual-purpose paint and for a variety of industrial applications.
Originality/value
This research demonstrates how a low-cost paint composition based on synthesized SIE compounds may be used as a dual-function paint for industrial use.
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Mahmoud Sabry Shided Keniwe, Ali Hassan Ali, Mostafa Ali Abdelaal, Ahmed Mohamed Yassin, Ahmed Farouk Kineber, Ibrahim Abdel-Rashid Nosier, Ola Diaa El Monayeri and Mohamed Ashraf Elsayad
This study focused on exploring the performance factors (PFs) that impact Infrastructure Sanitation Projects (ISSPs) in the construction sector. The aim was twofold: firstly, to…
Abstract
Purpose
This study focused on exploring the performance factors (PFs) that impact Infrastructure Sanitation Projects (ISSPs) in the construction sector. The aim was twofold: firstly, to identify these crucial PFs and secondly, to develop a robust performance model capable of effectively measuring and assessing the intricate interdependencies and correlations within ISSPs. By achieving these objectives, the study aimed to provide valuable insights into and tools for enhancing the efficiency and effectiveness of sanitation projects in the construction industry.
Design/methodology/approach
To achieve the study's aim, the methodology for identifying the PFs for ISSPs involved several steps: extensive literature review, interviews with Egyptian industry experts, a questionnaire survey targeting industry practitioners and an analysis using the Relative Importance Index (RII), Pareto principle and analytic network process (ANP). The RII ranked factor importance, and Pareto identified the top 20% for ANP, which determined connections and interdependencies among these factors.
Findings
The literature review identified 36 PFs, and an additional 13 were uncovered during interviews. The highest-ranked PF is PF5, while PF19 is the lowest-ranked. Pareto principle selected 11 PFs, representing the top 20% of factors. The ANP model produced an application for measuring ISSP effectiveness, validated through two case studies. Application results were 92.25% and 91.48%, compared to actual results of 95.77% and 97.37%, indicating its effectiveness and accuracy, respectively.
Originality/value
This study addresses a significant knowledge gap by identifying the critical PFs that influence ISSPs within the construction industry. Subsequently, it constructs a novel performance model, resulting in the development of a practical computer application aimed at measuring and evaluating the performance of these projects.
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Ayman El-Dessouki and Ola Rafik Mansour
The purpose of this paper is to unveil the main changes in the UAE’s policy towards Iran since its foundation in 1971. The UAE favored strategic hedging, extending its commercial…
Abstract
Purpose
The purpose of this paper is to unveil the main changes in the UAE’s policy towards Iran since its foundation in 1971. The UAE favored strategic hedging, extending its commercial and diplomatic relations with Iran, in addition to developing its military capabilities and maintaining military/security alliances with Saudi Arabia and the USA. However, the UAE started to reorient its policy towards Iran by adopting some sort of balancing strategy in the aftermath of the Arab Spring of 2011. This paper examines how and why the UAE had to change course and explores whether it would revert back to strategic hedging with Iran.
Design/methodology/approach
The study will be carried out based on a theoretical framework drawn from strategic hedging theory, a new structural theory in international relations, to examine the shifts in UAE policy towards Iran. Previous literature suggests that small states prefer hedging over balancing or bandwagoning. The authors also undertake a descriptive analysis and deploy a longitudinal within-case method to investigate changes in UAE policy towards Iran and identify the causal mechanisms behind these changes. That method allows investigating the impact of a particular event on a case by comparing the same case before and after that event occurred.
Findings
The main finding of this study is that the UAE hedging strategy towards Iran allowed maximizing the political and economic returns from the cooperation with Iran and mitigating the long-range national security risks without breaking up the consistent and beneficial ties with other regional and global powers. Hedging achieved the desired outcome, which is preventing direct military confrontation with Iran. Hard balancing, adopted by Abu Dhabi after the 2011 Arab Spring, has proved to have some negative effects, most importantly provoking Tehran. Some recent indicators suggest, though that the UAE may revert back to its long-established hedging policy towards Iran.
Originality/value
Strategic hedging is a new structural theory in international relation, although hedging behavior in states’ foreign policies is far from new. It is new enough, thus, not have been researched sufficiently, strategic hedging still needs theorizing and comparison. This paper highlights the importance of strategic hedging as the most appropriate strategy for small states. It provides an important contribution to the application of the theory to the case of UAE policy towards Iran. The paper also assesses the conventional wisdom that small states prefer hedging over balancing in the light of the changes in the UAE foreign policy since 2011.
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Presents a special issue, enlisting the help of the author’s students and colleagues, focusing on age, sex, colour and disability discrimination in America. Breaks the evidence…
Abstract
Presents a special issue, enlisting the help of the author’s students and colleagues, focusing on age, sex, colour and disability discrimination in America. Breaks the evidence down into manageable chunks, covering: age discrimination in the workplace; discrimination against African‐Americans; sex discrimination in the workplace; same sex sexual harassment; how to investigate and prove disability discrimination; sexual harassment in the military; when the main US job‐discrimination law applies to small companies; how to investigate and prove racial discrimination; developments concerning race discrimination in the workplace; developments concerning the Equal Pay Act; developments concerning discrimination against workers with HIV or AIDS; developments concerning discrimination based on refusal of family care leave; developments concerning discrimination against gay or lesbian employees; developments concerning discrimination based on colour; how to investigate and prove discrimination concerning based on colour; developments concerning the Equal Pay Act; using statistics in employment discrimination cases; race discrimination in the workplace; developments concerning gender discrimination in the workplace; discrimination in Japanese organizations in America; discrimination in the entertainment industry; discrimination in the utility industry; understanding and effectively managing national origin discrimination; how to investigate and prove hiring discrimination based on colour; and, finally, how to investigate sexual harassment in the workplace.
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Nasra Idilbi, Daniella Arieli, Carmit Satran, Ola Ali Saleh and Ofra Halperin
This study aims to explore the perception of students from conflicted groups studying nursing together regarding the intergroup encounter. Specifically, this study focused on…
Abstract
Purpose
This study aims to explore the perception of students from conflicted groups studying nursing together regarding the intergroup encounter. Specifically, this study focused on Jewish and Arab students in a nursing undergraduate program at an Israeli college. This study focused on the association between two factors [students’ cultural intelligence (CQ) level and their satisfaction with the support provided by the college] and the degree of closeness or social interaction Arab and Jewish students experience.
Design/methodology/approach
Accordingly, 362 students completed three anonymous questionnaires during December 2022, focused on (1) CQ (2) satisfaction with the academic setting and (3) experience of intergroup social interaction.
Findings
The results revealed that (1) Arab students (minority group) demonstrated higher CQ than Jewish students, especially regarding awareness of cultural differences and motivation for intercultural encounters. (2) Arab students experienced the intergroup encounter with Jewish students as closer and warmer than Jewish students did. (3) Despite being a minority group in Israel, Arab students’ satisfaction with the college’s support was higher than that of Jewish students. (4) Satisfaction with the support provided by the college was the main factor associated with the sense of social interaction, having a higher correlation with it than the degree of CQ.
Originality/value
Fostering CQ through curricula alone is insufficient in shaping intergroup experiences of students studying together in a divided society. To encourage social interaction between students in academia in divided societies, educational institutions need to ensure their students’ sense of support is high.
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Mohammad Rishad Faridi and Aisha Javid Ali Mir
Upon completion of the case, students will be able to reflect the forces, which may disrupt the art industry through Artientifique initiatives and the ability to apply Phoenix…
Abstract
Learning outcomes
Upon completion of the case, students will be able to reflect the forces, which may disrupt the art industry through Artientifique initiatives and the ability to apply Phoenix encounter method with proactive scanning to remain competitive; create various multi-functional roles as a youth entrepreneur in the micro, small and medium enterprises (MSMEs) capacity and be able to understand the level and review the competition and business trends from an art industry perspective; analyze how innovation clubbed with sustainability will create a competitive advantage in a circular economy; determine the leadership style most appropriate for MSMEs to indulge in innovation and sustainability in the fine arts business; and design and discover opportunities to promote women’s entrepreneurship in the art industry, especially in emerging markets.
Case overview/synopsis
On a cold Friday morning in November 2020, Aisha Mir was in utter confusion written all over her face. She had to decide on a prosperous pathway. Should it be customization or standardization of artwork? Also, whether she should continue investing in the existing in-house supply chain or outsource this to a third party. Being practicing sustainability in her personal and professional life, she had designed her art studio herself by using upcycled materials. While enjoying the pigeons and sparrows chirping and eating grains on her wide windowpane, she looked at the world map with keen interest and imagined herself flying to each country along with her gray and white pigeons. While sitting in Madina city, Saudi Arabia, she was concerned about the expired makeup collection hub being set up in Abu Dhabi, UAE. The collection and the painting processes had to be monitored; the artworks needed auditing, framing and packing before they were shipped to a customer. Centralizing would add unnecessary hassle, and outsourcing needed distribution of authority. Keeping the challenges in mind, she was struggling to find a solution for efficient community engagement.
Complexity academic level
This case has been particularly focused on undergraduate and postgraduate early-stage level students pursuing business or commerce programs, particularly those studying entrepreneurial and management courses in innovation and sustainability.
Supplementary materials
Teaching notes are available for educators only.
Subject code
CSS 3: Entrepreneurship.
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Solomon Oyebisi, Mahaad Issa Shammas, Reuben Sani, Miracle Olanrewaju Oyewola and Festus Olutoge
The purpose of this paper is to develop a reliable model that would predict the compressive strength of slurry infiltrated fiber concrete (SIFCON) modified with various…
Abstract
Purpose
The purpose of this paper is to develop a reliable model that would predict the compressive strength of slurry infiltrated fiber concrete (SIFCON) modified with various supplementary cementitious materials (SCMs) using artificial intelligence approach.
Design/methodology/approach
This study engaged the artificial intelligence to predict the compressive strength of SIFCON through deep neural networks (DNN), artificial neural networks, linear regression, regression trees, support vector machine, ensemble trees, Gaussian process regression and neural networks (NN). A thorough data set of 387 samples was gathered from relevant studies. Eleven variables (cement, silica fume, fly ash, metakaolin, steel slag, fine aggregates, steel fiber fraction, steel fiber aspect ratio, superplasticizer, water to binder ratio and curing ages) were taken as input to predict the output (compressive strength). The accuracy and reliability of the developed models were assessed using a variety of performance metrics.
Findings
The results showed that the DNN (11-20-20-20-1) predicted the compressive strength of SIFCON better than the other algorithms with R2 and mean square error yielding 95.89% and 8.07. The sensitivity analysis revealed that steel fiber, cement, silica fume, steel fiber aspect ratio and superplasticizer are the most vital variables in estimating the compressive strength of SIFCON. Steel fiber contributed the highest value to the SIFCON’s compressive strength with 16.90% impact.
Originality/value
This is a novel technique in predicting the compressive strength of SIFCON optimized with different SCMs using supervised learning algorithms, improving its quality and performance.
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Suzanna ElMassah, Ola AlSayed and Shereen Mostafa Bacheer
The purpose of this study is to investigate the main factors that affect liquidity risk in the UAE Islamic banks.
Abstract
Purpose
The purpose of this study is to investigate the main factors that affect liquidity risk in the UAE Islamic banks.
Design/methodology/approach
The study examines the annual data of the seven UAE Islamic banks over the period 2008-2014. Random effects panel data model is used to estimate the impact of four bank-specific variables and two macroeconomic ones on the liquidity risk of the UAE Islamic banks via their impact on five alternative liquidity ratios.
Findings
The paper finds that bank size has a negative impact on liquidity risk according to two liquidity ratios only, and an insignificant impact according to the other three. Both capital adequacy and London interbank offered rate have significant negative impacts on liquidity risk for three liquidity ratios, and insignificant impacts on two. The effect of credit risk is negative for all adopted ratios, while that of return on assets is negative for one ratio only. Finally, real GDP has a positive effect on two ratios and an insignificant one on the others.
Research limitations/implications
The study provides insights for policymakers and practitioners to choose appropriate liquidity management procedures. It emphasizes that identifying efficient procedures or policies depends on the liquidity ratio that is used as a proxy of liquidity risk and its definition, in addition to the correlation between the liquidity ratio and liquidity risk. The study also provides some guidance to Islamic banks in the UAE concerning the main factors impacting their liquidity, which can eventually enable them to support their liquidity management policies, in a way that would expand their customer base according to profitability aspects, and not only religious ones.
Originality/value
The paper adds to the relatively limited literature on liquidity risk in Islamic banks. It also is the first study that investigates the determinants of liquidity risk facing Islamic banks in the UAE using five alternative liquidity ratios.
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The purpose of this study is two-fold. First, it systematically reviews and synthesizes research on servant leadership in management and hospitality management literature. Second…
Abstract
Purpose
The purpose of this study is two-fold. First, it systematically reviews and synthesizes research on servant leadership in management and hospitality management literature. Second, by reviewing and comparing the characteristics of the hospitality industry and servant leadership attributes, this study provides insights concerning the conceptualizations and theorization of servant leadership in hospitality management and discusses future research directions.
Design/methodology/approach
The current study reviewed 106 articles published during the period of 1970 to 2018 in hospitality management and broader management literature.
Findings
The characteristics of the hospitality industry and servant leadership attributes were found to be mutually inclusive, both consisting qualities such as trust, integrity, honesty, care, servant behavior, listening and community focus.
Practical implications
Scholars should concentrate on exploring what makes servant leaders unique in the hospitality industry.
Originality/value
The study reviews the hospitality characteristics, and servant leadership attributes offer new research avenues.
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