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1 – 10 of 67Rawan Ramadan, Hassan Ghanem, Jamal M. Khatib and Adel M. ElKordi
The purpose of this paper is to check the feasibility of using biomaterial such as of Phragmites-Australis (PA) in cement paste to achieve sustainable building materials.
Abstract
Purpose
The purpose of this paper is to check the feasibility of using biomaterial such as of Phragmites-Australis (PA) in cement paste to achieve sustainable building materials.
Design/methodology/approach
In this study, cement pastes were prepared by adding locally produced PA fibers in four different volumes: 0%, 0.5%, 1% and 2% for a duration of 180 days. Bottles and prisms were subjected to chemical shrinkage (CS), drying shrinkage (DS), autogenous shrinkage (AS) and expansion tests. Besides, prism specimens were tested for flexural strength and compressive strength. Furthermore, a mathematical model was proposed to determine the variation length change as function of time.
Findings
The experimental findings showed that the mechanical properties of cement paste were significantly improved by the addition of 1% PA fiber compared to other PA mixes. The effect of increasing the % of PA fibers reduces the CS, AS, DS and expansion of cement paste. For example, the addition of 2% PA fibers reduces the CS, expansion, AS and DS at 180 days by 36%, 20%, 13% and 10%, respectively compared to the control mix. The proposed nonlinear model fit to the experimental data is appropriate with R2 values above 0.92. There seems to be a strong positive linear correlation between CS and AS/DS with R2 above 0.95. However, there exists a negative linear correlation between CS and expansion.
Research limitations/implications
The PA used in this study was obtained from one specific location. This can exhibit a limitation as soil type may affect PA properties. Also, one method was used to treat the PA fibers.
Practical implications
The utilization of PA fibers in paste may well reduce the formation of cracks and limit its propagation, thus using a biomaterial such as PA in cementitious systems can be an environmentally friendly option as it will make good use of the waste generated and enhance local employment, thereby contributing toward sustainable development.
Originality/value
To the authors best knowledge, there is hardly any research on the effect of PA on the volume stability of cement paste. Therefore, the research outputs are considered to be original.
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Samer M. El-Zahab, Nabil Fares, Hassan Ghanem and Tarek Dandashli
The purpose of this study is to introduce a new concept in engineered materials and that is truss substructured materials (TSMs). These materials would be engineered to express…
Abstract
Purpose
The purpose of this study is to introduce a new concept in engineered materials and that is truss substructured materials (TSMs). These materials would be engineered to express mechanical abilities that are seldom found in nature.
Design/methodology/approach
This article starts with defining TSMs and how to classify and name TSMs. The article also introduces the theoretical modeling of TSMs, the software developed for analyzing TSMs and the parametric studies performed.
Findings
After these studies, new materials are introduced that have abilities such as negative Poisson ratio in X and Y direction, negative Poisson ratio in one direction (either x or y), self-remodeling under stress.
Research limitations/implications
The research is done in 2D, further studies in 3D using 3D printing are required to make the suggested materials a viable real-world solution.
Originality/value
The main contribution of this research work is the proposed nomenclature that creates a system for researchers to experiment and create novel and unique versions of the proposed materials. Furthermore, some of the materials developed exhibit some unique properties that may create advances in engineering with further development.
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Hui Shi, Drew Hwang, Dazhi Chong and Gongjun Yan
Today’s in-demand skills may not be needed tomorrow. As companies are adopting a new group of technologies, they are in huge need of information technology (IT) professionals who…
Abstract
Purpose
Today’s in-demand skills may not be needed tomorrow. As companies are adopting a new group of technologies, they are in huge need of information technology (IT) professionals who can fill various IT positions with a mixture of technical and problem-solving skills. This study aims to adopt a sematic analysis approach to explore how the US Information Systems (IS) programs meet the challenges of emerging IT topics.
Design/methodology/approach
This study considers the application of a hybrid semantic analysis approach to the analysis of IS higher education programs in the USA. It proposes a semantic analysis framework and a semantic analysis algorithm to analyze and evaluate the context of the IS programs. To be more specific, the study uses digital transformation as a case study to examine the readiness of the IS programs in the USA to meet the challenges of digital transformation. First, this study developed a knowledge pool of 15 principles and 98 keywords from an extensive literature review on digital transformation. Second, this study collects 4,093 IS courses from 315 IS programs in the USA and 493,216 scientific publication records from the Web of Science Core Collection.
Findings
Using the knowledge pool and two collected data sets, the semantic analysis algorithm was implemented to compute a semantic similarity score (DxScore) between an IS course’s context and digital transformation. To present the credibility of the research results of this paper, the state ranking using the similarity scores and the state employment ranking were compared. The research results can be used by IS educators in the future in the process of updating the IS curricula. Regarding IT professionals in the industry, the results can provide insights into the training of their current/future employees.
Originality/value
This study explores the status of the IS programs in the USA by proposing a semantic analysis framework, using digital transformation as a case study to illustrate the application of the proposed semantic analysis framework, and developing a knowledge pool, a corpus and a course information collection.
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Jaflah Hassan Al-Ammary and Mohammed Essam Ghanem
Information and communication technologies (ICT)-presented technological developments, such as soil sensors, remote sensing, artificial intelligence (AI) and big data, have shown…
Abstract
Purpose
Information and communication technologies (ICT)-presented technological developments, such as soil sensors, remote sensing, artificial intelligence (AI) and big data, have shown the potential to increase crop output and quality while consuming fewer resources and having a smaller environmental impact. The first step in ushering in a new era of technological advancement in the agricultural sector in the Kingdom of Bahrain is evaluating how prepared farmers and farm owners are to adopt these technologies. Therefore, the current study examines how ICT are prepared, accepted and adopted in agriculture in the Kingdom of Bahrain.
Design/methodology/approach
The study's goals were attained by using both quantitative and qualitative methodologies. A survey was created to learn more about the present state of ICT usage in agriculture, including its awareness, readiness, acceptance and adoption. To strengthen the conclusions and investigate the current situation related agricultural behavior, production and the use of information technology (IT) to support agriculture in the chosen farms, four exploratory field visits were made. Additionally, a strength-weakness-opportunities-threat (SWOT)-threat, opportunities, weakness, strength (TOWS) analysis was performed to evaluate the Kingdom of Bahrain's readiness and long-term plans for implementing ICT in agriculture. On the basis of secondary data, survey data and interview findings, SWOT-TOWS were created.
Findings
The findings revealed insufficient knowledge and awareness about ICT in agriculture. Despite the high level of digital infrastructure readiness in Bahrain, farmers are not ready to adopt sophisticated devices and complex applications such as crop sensing tools, the internet of things (IoT) and AI; however, there is a strong acceptance among farmers to implement new ideas and agriculture approaches.
Originality/value
The Arabian Gulf Countries, which are characterized by an arid environment, sporadic vegetation, weak soil and a lack of water supplies and arable land, have few studies that explore the crucial role of ICT in growing the agricultural sector. Considering the influence of ICT on the provision of more productive agriculture in a challenging and complicated environment, the study contributes to the body of knowledge by conducting an empirical investigation that addresses an urgent issue. The study is considered one of the few in the countries of the Arabian Gulf to address this subject.
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Mylène Kherallah, Nicholas Minot and Peter Gruhn
Drawing on the results of a survey of 800 Egyptian wheat farmers, this chapter analyzes the patterns of wheat production and marketing (after the reforms of 1987), government…
Abstract
Drawing on the results of a survey of 800 Egyptian wheat farmers, this chapter analyzes the patterns of wheat production and marketing (after the reforms of 1987), government procurement of domestic wheat, and the price responsiveness of wheat supply and input demand. The results indicate that most of the wheat produced is consumed in rural areas, which explains why only a small portion of national production is available for purchase by the government. Given observed price responsiveness, the study finds that achieving the goal of self-sufficiency through price policy would be costly and ill-advised.
This paper aims to identify the intersection between Islamic microfinance (MF) (IsMF) and Takaful in high-risk economies and propose a model for the sustainable application of…
Abstract
Purpose
This paper aims to identify the intersection between Islamic microfinance (MF) (IsMF) and Takaful in high-risk economies and propose a model for the sustainable application of IsMF. The word Takaful, although used to refer to Islamic insurance, means solidarity and is used as such in this paper.
Design/methodology/approach
The paper used a descriptive and analytical method to present findings derived from secondary data collected from the Palestinian Central Bureau of Statistics and primary data from semi-structured interviews.
Findings
Need in the Palestinian household is very high, and the performance of Palestinian MF institutions (MFI) was found to have deviated from the spirit of MF. A significant shortcoming by MFI lies in the Palestinian law that focuses on organizing MFI’s operations as financial institutions only. With a deviated purpose and generalized laws, the paper proposed a model of IMF. The model consists of three stages covering mission and market-based financing for the economically incapable and those better off. Finally, enacting laws to protect micro-enterprises and cooperation between institutions that operate at each stage is necessary.
Originality/value
This research contributes to the literature on MF and IsMF, especially in high-risk countries. Furthermore, this study proposes a model for IsMF best practices based on the spirit of MF where it is most needed.
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Christelle Bou-Mitri, Lama Khnaisser, Mira Bou Ghanem, Samar Merhi, Jessy El-Hayek Fares, Jacqueline Doumit and Antoine G. Farhat
This study aims to assess the exposure of Lebanese consumers to nutrition and health claims (NHCs) on pre-packed bread.
Abstract
Purpose
This study aims to assess the exposure of Lebanese consumers to nutrition and health claims (NHCs) on pre-packed bread.
Design/methodology/approach
Bread samples (n = 354) from all the bakeries (n = 44) located in Mount Lebanon, between 2017 and 2018, were assessed. Breads with nutrition claims were analyzed using standard methods. A cross-sectional study was also conducted among 400 supermarket shoppers.
Findings
Results showed that among the collected samples of bread (n = 354), 59.6 per cent carried at least one claim, 47.2 per cent had non-nutrient claims, 32.5 per cent had nutrition claims and 15.3 per cent presented health claims. Claims related to sugar, salt and fiber content were the most commonly used (28.8 , 16.4 and 14.7 per cent, respectively). NHCs were mostly present on whole wheat bread. Breads with claims were more expensive. Half of the participants (49.8 per cent) relied on NHCs whenever purchasing bread, especially females (OR = 2.35, 95 per cent CI = 1.44-3.84, p = 0.001), those following a specific diet (OR = 4.56, 95 per cent CI = 2.02-10.25, p < 0.001) and those with the lowest household income (OR = 0.795, 95 per cent CI = 0.639-0.989, p = 0.040).
Originality/value
The overall findings showed that Lebanese consumers are highly exposed to NHCs, especially those at higher risk which could lead to serious public health issues if their use is not strictly regulated and controlled. Moreover, NHCs could be used as a tool to increase consumers’ awareness and help them make healthier choices during shopping.
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Raghda El Ebrashi, Rania Salem, Dina El Kayaly and Noha El-Bassiouny
This paper aims to investigate the role of demographics and sector type in determining consumer preferences of Islamic micro-credit products, namely, Musharka and Murabha, versus…
Abstract
Purpose
This paper aims to investigate the role of demographics and sector type in determining consumer preferences of Islamic micro-credit products, namely, Musharka and Murabha, versus conventional micro-credit financing in Egypt.
Design/methodology/approach
This research is a quantitative study that uses surveys on 1,125 current micro-credit consumers in Cairo and Upper Egypt using multi-staged cluster sampling technique. Descriptive and inferential analyses were used to explain results.
Findings
The study revealed the potential of Musharka mode of financing among micro-credit borrowers in Egypt, specifically in the manufacturing sector, followed by the trade sector. Although previous researches showed correlations between income, age and other demographic factors with consumer financing choices, the current research indicated no significance for consumer demographics in determining preferences of Islamic micro-credit contracts in Egypt. However, the sector type showed high potential in determining consumer choices of Islamic micro-credit contracts.
Research limitations/implications
This paper advances knowledge in the domain of consumer behavior, specifically in bottom of the pyramid and subsistence markets that are under researched.
Practical implications
The results highlighted are important for micro-finance institutions, NGOs and policy makers, as they delve deeper into the consumer preferences for Islamic financial products and attempt to present innovative solutions toward poverty eradication.
Originality/value
This research is one of the few attempts to study and explain consumer preferences toward Islamic micro-credit products in Egypt, and the role of sectors in determining consumer choices for specific Islamic micro-credit contracts.
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Abdelkader Laallam, Salina Kassim, Engku Rabiah Adawiah Engku Ali and Buerhan Saiti
This study aims to highlight the importance of intellectual capital (IC) for the operation of waqf (Islamic endowment) institutions, as few studies have discussed this issue in…
Abstract
Purpose
This study aims to highlight the importance of intellectual capital (IC) for the operation of waqf (Islamic endowment) institutions, as few studies have discussed this issue in relation to non-profit religious organisations, particularly waqf organisations. Consequently, this study hopes to contribute to the development of waqf institutions in terms of human capital proficiency, the efficiency of operations and the effectiveness and sustainability of performance.
Design/methodology/approach
The authors reviewed a significant body of relevant studies written on various aspects of IC, to highlight the significance of considering IC in the operation of non-profit organisations (NPOs) and waqf institutions.
Findings
This study highlights the importance of IC in the operation of waqf institutions. It provides a platform that facilitates understanding of the existing obstacles and challenges in waqf institutions (such as lack of accountability, lack of funding, mismanagement and lack of trained labour, among others) and offers potential solutions through the consideration of knowledge and IC.
Research limitations/implications
This study is a conceptual analysis of IC in the context of NPOs. Future studies should conduct empirical testing, which will provide more detailed discussion and enriching insights into the issue of IC and the performance of NPOs, particularly in the case of waqf institutions.
Practical implications
This study provides several important implications for waqf institutions and other NPOs, as it sheds light on the consideration of knowledge and IC in their operations.
Originality/value
To the best of the authors’ knowledge, this study is the first to discuss the issues of waqf in the light of IC and provide an integrated framework for the operation of waqf institutions.
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– The purpose of this paper is to employ agency theory to identify the determinants of the audit delay among Palestinian companies listed on Palestine Stock Exchange (PSE).
Abstract
Purpose
The purpose of this paper is to employ agency theory to identify the determinants of the audit delay among Palestinian companies listed on Palestine Stock Exchange (PSE).
Design/methodology/approach
Drawing on the agency theory, eight hypotheses are tested using data collected from the year 2011 annual reports for all the 46 listed companies on PSE. Multiple regression analysis was performed to identify the influence of a set of company characteristics, ownership structure variables, and corporate governance mechanisms.
Findings
The result of the analysis demonstrated that the audit reporting delay is influenced by the board size, corporate size, status of audit firm, company complexity, existence of audit committee, and ownership dispersion.
Research limitations/implications
The main shortcoming of the current study is that the analysis covered the Palestinian companies’ annual reports for only one year. A time series analysis might give fuller and understandable picture about the audit report lag (ARL) determinants. The outcome of the study can be used by companies’ managements and policy makers in Palestine to improve future disclosure.
Originality/value
This paper adds to the limited audit delay literature in Middle East countries in general and Arab World in particular. This paper not only examines the determinants of the audit delay but also attempts to theorize such delay.
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