Awad I. Ahmed, S.N. Basahel and R.M. Khalil Chemistry
The inhibitive effect of some morpholine and thiosemicarbazide derivatives on the dissolution of aluminium in 2M HCI has been investigated by using thermometric, weight loss and…
Abstract
The inhibitive effect of some morpholine and thiosemicarbazide derivatives on the dissolution of aluminium in 2M HCI has been investigated by using thermometric, weight loss and hydrogen evolution techniques. The effect of the inhibitors on the protection efficiency and the corrosion rate were determined at various inhibitor concentrations and temperatures. It was observed that the percentage inhibition of aluminium increases with the increase of inhibitor concentration and decreases with rise of reaction temperature. Retardation of dissolution is due to weak adsorption of the additives on the metal surface. The order of inhibition efficiency of the inhibitors used depends on the number of adsorption sites in the molecule, their charge density and molecular size.
Awad I. Ahmed and S. Abdel‐Hakam
Corrosion inhibition by some thiourea derivatives of zinc in hydrochloric acid was measured using hydrogen evolution and weight loss techniques. The tested compounds affect the…
Abstract
Corrosion inhibition by some thiourea derivatives of zinc in hydrochloric acid was measured using hydrogen evolution and weight loss techniques. The tested compounds affect the dissolution rate in one of two manners: (a) inhibition throughout all concentrations added and (b) inhibition at lower concentration and acceleration at higher ones. The effect of structural changes in these compounds on their inhibition efficiency has been discussed.
Corporate social responsibility (CSR) has been one of the main subjects for companies’ sustainability in contemporary years. Engaging in CSR practices has been recognized to be…
Abstract
Purpose
Corporate social responsibility (CSR) has been one of the main subjects for companies’ sustainability in contemporary years. Engaging in CSR practices has been recognized to be beneficial for firms since it might create value for firm in the market. The process of creating value in recent era has been controlled by firms’ hidden resources and simultaneously the concept of value added intellectual capital (VAIC). This paper aims to determine whether intellectual capital (IC) and each of its three constituents (human capital efficiency [HCE], capital employed efficiency [CEE] and structural capital efficiency [SCE]) can generate improvements in CSR in an emerging market.
Design/methodology/approach
Using the Egyptian Corporate Responsibility (S&P/EGX ESG) index and extracting accounting data from the annual reports of companies listed on this index, an empirical analysis that considers VAIC and its elements was accomplished on a sample of 267 firm-year observations for a nine-year period beginning in 2010.
Findings
The empirical results of the multivariate regression indicated that Egyptian companies active in using IC have more tendency to engage in CSR practices. In addition, it is shown that HCE positively influences CSR practices, while SCE has a negative association with such social activities, and CEE has no significant relationship with CSR activities.
Practical implications
The results of the research have some implications through offering an enhanced understanding of using IC and CSR practices that might be in favor of several investors, regulatory bodies and scholars concerned with firms’ social activities. Besides, it provides empirical evidence that the efficient use of IC provides advantages not only for the stockholders but also for the community.
Originality/value
To the best of the authors’ knowledge, this study is one of the first studies to investigate Egyptian firms for IC and CSR topics. In addition, this study provides empirical evidence on this relationship from the Egyptian environment that is different from other cultural and institutional environments in which previous studies were conducted.
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Romus Noufelie, Cosmas Bernard Meka'a and Astride Claudel Njiepue Nouffeussie
The aim of this study is to investigate the determinants of Inequalities of Opportunity (IOP) among the young in Cameroonian labour market. IOP are the differences in outcomes…
Abstract
The aim of this study is to investigate the determinants of Inequalities of Opportunity (IOP) among the young in Cameroonian labour market. IOP are the differences in outcomes which are explained by the circumstance factors, meaning that the variables which are beyond individual controls. For this purpose, this study performs the Human Opportunity Index (HOI) in order to quantify the IOP among employee over 10- to 25-year-olds. Using the data from the Fourth Cameroon Household Survey (FCHS4) carried out in 2014 by Statistical National Institute, IOP is quantified for each of 14 Cameroonian’s geographical areas. Based on the Dissimilarity index (D-Index) value, two main trends are outlined: a spatial subgroup including North-West, East and the urban regions which is characterized by a higher D-Index; meaning that IOP is relatively significant. In contrast, a more homogeneous subgroup with a lower IOP is found in rural, North and East regions. Moreover, regarding on the one hand the Shapley-Shorrock’s decomposition method, it appears that the mayor circumstances contributing to the D-index are socio-professional category, primary education and religious obedience of the household head which explain from 51% to 79% the overall IOP. While on the other hand, the Blinder-Oaxaca decomposition shows that 80% of the gap in D-Index is explained by disparities in circumstances, rather than individual efforts. Finally, our conclusions argue in favour of effective decentralization, for a more inclusive employment policy that takes into account local labour market features.
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The purpose of the paper is to showcase the significant achievements of Egypt's scientists in the 20th century across various fields of study such as medicine, physics, chemistry…
Abstract
Purpose
The purpose of the paper is to showcase the significant achievements of Egypt's scientists in the 20th century across various fields of study such as medicine, physics, chemistry, biology, math, geology, astronomy and engineering. The paper highlights the struggles and successes of these scientists, as well as the cultural, social and political factors that influenced their lives and work. The aim is to inspire young people to pursue careers in science and make their own contributions to society by presenting these scientists as role models for hard work and dedication. Ultimately, the paper seeks to promote the importance of science and its impact on society.
Design/methodology/approach
The purpose of this review is to present the scientific biographies of Egypt's most distinguished scientists, primarily in the field of Natural Sciences, in a balanced and comprehensive manner. The work is objective, honest and abstract, avoiding any bias or exaggeration. The author provides a clear and concise methodology, including a brief introduction to the scientist and their field of study, an explanation of their major contributions, the impact of their work on society, any challenges or obstacles faced during their career and their lasting legacy. The aim is to showcase the important achievements of these scientists, their impact on their respective fields and to inspire future generations to pursue scientific careers.
Findings
The group of outstanding scientists in 20th century Egypt were shaped by various factors, including familial upbringing, education, society, political and cultural atmosphere and state support for scientific research. These scientists made significant contributions to various academic disciplines, including medicine, physics, chemistry, biology, mathematics and engineering. Their impact on their communities and cultures has received international acclaim, making them role models for future generations of scientists and researchers. The history of these scientists highlights the importance of educational investments and supporting scientific research to foster innovation and social progress. The encyclopedia serves as a useful tool for students, instructors and education professionals, preserving Egypt's scientific heritage and honouring the scientists' outstanding accomplishments.
Research limitations/implications
The encyclopedia preserves Egypt's scientific heritage, which has been overlooked for political or other reasons. It is a useful tool for a variety of readers, including students, instructors and education professionals, and it offers insights into universally relevant scientific success factors as well as scientific research methodologies. The encyclopedia honours the outstanding scientific accomplishments of Egyptian researchers and their contributions to the world's scientific community.
Practical implications
The practical implications of this paper are several. First, it highlights the importance of education, family upbringing and societal support for scientific research in fostering innovation and social progress. Second, it underscores the need for continued funding and support for scientific research to maintain and build upon the accomplishments of past generations of scientists. Third, it encourages young people to pursue scientific careers and make their own contributions to society. Fourth, it preserves the scientific heritage of Egypt and honors the contributions of its outstanding scientists. Finally, it serves as a useful tool for students, instructors and education professionals seeking to understand the factors underlying scientific success and research methodologies.
Social implications
The social implications of the paper include promoting national pride and cultural identity, raising awareness of the importance of education and scientific research in driving social progress, inspiring future generations of scientists and researchers, reducing socioeconomic disparities and emphasizing the role of society, politics and culture in shaping scientific researchers' personalities and interests.
Originality/value
The paper's originality/value lies in its comprehensive documentation of the scientific biographies of Egypt's most prominent scientists in the 20th century, providing unique insights into the factors that contributed to their development and their impact across various academic disciplines. It preserves Egypt's scientific heritage and inspires future generations of scientists and researchers through the promotion of educational investments and scientific research. The encyclopedia serves as a useful tool for education professionals seeking to understand scientific success factors and research methodologies, emphasizing the importance of supportive and inclusive environments for scientific development.
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Ahmed Elsayed Awad Bakry, Zubir Azhar and K. Kishan
To assist Malaysian public-listed companies (PLCs) in preparing corporate social responsibility (CSR) reports, Bursa Malaysia Berhad (BMB) launched the second edition of the…
Abstract
Purpose
To assist Malaysian public-listed companies (PLCs) in preparing corporate social responsibility (CSR) reports, Bursa Malaysia Berhad (BMB) launched the second edition of the Sustainability Reporting Guide (SRG) in 2018. This new SRG edition has several additional requirements for CSR reporting (CSRR), the most important of which is a chapter on assurance which provides detailed guidance on how it may be carried out. This study aims to determine whether the new SRG edition influences the extent of CSRR, and whether such effect is moderated by the provision of assurance on CSRR. It also aims to identify whether amending CSRR regulations and providing assurance on such reporting indirectly influences firm value through the possible improvement in the extent of CSRR.
Design/methodology/approach
This study performed a content analysis of the CSRR of a sample of Malaysian PLCs that maintained their positions among the top 100 companies by market capitalization between 2017 and 2020 to determine the extent of CSRR for the two years before and two years after the implementation of the new edition of SRG. This study conducted different statistical analyses to indicate whether the implementation of the second edition of SRG has an effect on enhancing the extent of CSRR, and whether the provision of assurance on such reporting moderates such an effect. This study then used instrumental variable regressions to examine the influence of the predicted extent of CSRR on firms’ value measured by Tobin’s Q.
Findings
This study found that the implementation of the second edition of SRG has a positive and significant influence on the extent of CSRR. This effect is strengthened by the provision of assurance on CSRR. Instrumental variable regressions also indicate that enhancing the extent of CSRR affected by the second edition of SRG is linked to higher firm value.
Originality/value
To the best of the authors’ knowledge, this study is one of the first to assess the determinants and implications of CSRR among Malaysian companies after adopting the second edition of SRG.
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This paper aims to describe patterns of experiences and perceptions of inclusion and accuracy of Arab American culture in the multicultural paradigm in schools through the voices…
Abstract
Purpose
This paper aims to describe patterns of experiences and perceptions of inclusion and accuracy of Arab American culture in the multicultural paradigm in schools through the voices of Arab American youth.
Design/methodology/approach
This study was carried out using a survey research design. Qualitative reports of experiences in school were obtained using open-ended questionnaires.
Findings
The reports were examined for themes regarding specific types of experiences and for types of inaccuracies taught about Arab culture in schools. Categories that arose for experiences included bullying/harassment, racial stereotyping and religious stereotyping of Arabs. Half of the sample reported that the culture is not represented in the multicultural paradigm in their school. Themes arising from curricular inaccuracies include misinformation involving stereotypes and biases.
Research limitations/implications
Limitations include generalizability due to research design and sampling methods. Future research may use multiple methods of collecting this type of information, such as focus groups, observations and face-to-face interviews with participants.
Practical implications
These experiences may affect students’ sense of belonging and inclusion in their schools, which may affect academic and social growth. Strategies for school staff to implement in their schools are provided. Results may be used to inform environmental, policy and curricular reform in schools.
Originality/value
This study is one of the few to provide qualitative descriptions of Arab American’s experiences in the schools.
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Maha S. Abdo, Samira A. Ahmed, Basmah K. Awad and Mohamed H. Elsharnouby
This study aims to identify the determinants of customers' green purchasing behaviors. First, the study examines the relationship between green self-identity (GSI) and green peer…
Abstract
Purpose
This study aims to identify the determinants of customers' green purchasing behaviors. First, the study examines the relationship between green self-identity (GSI) and green peer influence (GPI) on green purchase behavior (GPB). Second, it examines the relationships between both GSI and GPI, and purchasing behavior mediated by green consumption values (functional value (FV) and social value (SV)). Third, it investigates the moderating effect of customer disidentification (CDI) on the relationships between GSI and both green consumption values. Finally, it investigates the indirect relationships between GSI and purchasing behavior moderated by CDI.
Design/methodology/approach
A quantitative study is conducted using a survey of 204 Egyptian buyers of organic food products. AMOS and Hayes's PROCESS macro are used to test the hypotheses under investigation.
Findings
The customer's peer influence and GSI are found to have a positive impact on green purchasing behavior. Additionally, the mediating impact of values and the moderating impact of CDI are also confirmed.
Practical implications
This study helps organic food companies in identifying the determinants of customers' green purchasing behavior. The results of the study will guide the efforts of green marketing professionals in promoting green products in the Egyptian market.
Originality/value
Since the notion of green consumption is still in its infancy, there is a need for further exploration on the green consumption concept to better understand customers' predictors of that type of consumption; accordingly, the current research was conducted.
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Rishi Kapoor Ronoowah and Boopen Seetanah
The purpose of this study is to examine the linear and non-linear relationship between capital structure (CS) and firm performance (FP) and the moderating and mediating roles of…
Abstract
Purpose
The purpose of this study is to examine the linear and non-linear relationship between capital structure (CS) and firm performance (FP) and the moderating and mediating roles of agency costs in the CS-FP nexus.
Design/methodology/approach
This study used static and quadratic panel data regression models to examine the linear and non-linear relationships and structured equation models to analyze the mediating effect of agency costs in the CS-FP nexus of 38 listed non-financial Mauritian firms from 2009 to 2019.
Findings
Leverage has a significant negative effect on FP supporting the pecking order theory. Agency costs are significantly and positively associated with FP. There is a strong non-linear relationship between leverage and FP supporting the trade-off and agency cost theories. Agency costs are an important moderator and mediator in the CS-FP nexus. Overall, the sensitivity analyses showed that the results were robust.
Practical implications
Firms need to carefully consider the levels and types of debt and equity in their CS involving the use of dynamic strategies to adjust CS in response to changing economic conditions and FP. The moderating effect of agency costs may guide firms in optimizing CS and may contribute to corporate governance discussions, emphasizing the importance of aligning interests to foster sustainable business practices.
Originality/value
This study adds to the extant literature by providing new evidence on the non-linear relationship between leverage and FP and the moderating and mediating roles of agency costs in the CS-FP nexus in emerging capital markets, where such studies are rare.
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Abdullahi D. Ahmed and Abu N.M. Wahid
This paper aims to use the newly developed panel data cointegration analysis and the dynamic time series modeling approach to examine the linkages between financial structure…
Abstract
Purpose
This paper aims to use the newly developed panel data cointegration analysis and the dynamic time series modeling approach to examine the linkages between financial structure (market‐based vs bank‐based) and economic growth in African economies.
Design/methodology/approach
The research investigates the dynamic relationship between financial structure and economic growth in a panel of a group of seven African developing countries over the period of 1986‐2007. The paper uses various indicators/measures of financial structure and financial system, and employs the traditional time‐series analysis for causality as well as the newly developed panel unit root and cointegration techniques and estimated finance‐growth relationship using FMOLS for heterogeneous panel.
Findings
From the dynamic heterogeneous panel approach, the paper firstly finds that market‐based financial system is important for explaining output growth through enhancing efficiency and productivity. Second, the authors' empirical evidence supports the view that higher levels of banking system development are positively associated with capital accumulation growth and lead to faster rates of economic growth.
Originality/value
Panel cointegration, group mean panel FMOLS and country‐by‐country time series investigations indicate that the market‐based financial system is important for explaining output growth through enhancing efficiency and productivity, whereas the development of banking system is significantly associated with capital accumulation growth. Further results from the time‐series approach show evidence of unidirectional causality running from market‐oriented as well as bank‐oriented financial systems to economic growth.