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1 – 10 of 47Adel Abdallah, Mohamed M. Fouad and Hesham N. Ahmed
The purpose of this paper is to introduce a novel intensity-modulated fiber optic sensor for real-time intrusion detection using a fiber-optic microbend sensor and an optical…
Abstract
Purpose
The purpose of this paper is to introduce a novel intensity-modulated fiber optic sensor for real-time intrusion detection using a fiber-optic microbend sensor and an optical time-domain reflectometer (OTDR).
Design/methodology/approach
The proposed system is tested using different scenarios using person/car as intruders. Experiments are conducted in the lab and in the field. In the beginning, the OTDR trace is obtained and recorded as a reference signal without intrusion events. The second step is to capture the OTDR trace with intrusion events in one or multiple sectors. This measured signal is then compared to the reference signal and processed by matrix laboratory to determine the intruded sector. Information of the intrusion is displayed on an interactive screen implemented by Visual basic. The deformer is designed and implemented using SOLIDWORKS three-dimensional computer aided design Software.
Findings
The system is tested for intrusions by performing two experiments. The first experiment is performed for both persons (>50 kg) in the lab and cars in an open field with a car moving at 60 km/h using two optical fiber sectors of lengths 200 and 500 m. For test purposes, the deformer length used in the experiment is 2 m. The used signal processing technique in the first experiment has some limitations and its accuracy is 70% after measuring and recording 100 observations. To overcome these limitations, a second experiment with another technique of signal processing is performed.
Research limitations/implications
The system can perfectly display consecutive intrusions of the sectors, but in case of simultaneous intrusions of different sectors, which is difficult to take place in real situations, there will be the ambiguity of the number of intruders and the intruded sector. This will be addressed in future work. Suitable and stable laser power is required to get a suitable level of backscattered power. Optimization of the deformer is required to enhance the sensitivity and reliability of the sensor.
Practical implications
The proposed work enables us to benefit from the ease of implementation and the reduced cost of the intensity-modulated fiber optic sensors because it overcomes the constraints that prevent using the intensity-modulated fiber optic sensors for intrusion detection.
Originality/value
The proposed system is the first time long-range intensity-modulated fiber optic sensor for intrusion detection.
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Mohamed Saifeldeen, Ahmed Monier and Nariman Fouad
This paper presents a novel method for identifying damage in reinforced concrete (RC) bridges, utilizing macro-strain data from distributed long-gauge sensors installed on the…
Abstract
Purpose
This paper presents a novel method for identifying damage in reinforced concrete (RC) bridges, utilizing macro-strain data from distributed long-gauge sensors installed on the concrete surface.
Design/methodology/approach
The method relies on the principle that heavy vehicles induce larger dynamic vibrations, leading to increased strain and crack formation compared to lighter vehicles. By comparing the absolute macro-strain ratio (AMSR) of a reference sensor with a network of distributed sensors, damage locations can be effectively pinpointed from a single data collection session. Finite-element modeling was employed to validate the method's efficacy, demonstrating that the AMSR ratio increases significantly in the presence of cracks. Experimental validation was conducted on a real-world bridge in Japan, confirming the method's reliability under normal traffic conditions.
Findings
This approach offers a practical and efficient means of detecting bridge damage, potentially enhancing the safety and longevity of infrastructure systems.
Originality/value
Original research paper.
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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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Youssef L. Nashed, Fouad Zahran, Mohamed Adel Youssef, Manal G. Mohamed and Azza M. Mazrouaa
The purpose of this study is to examine how well reinforced concrete structures can be shielded against concrete carbonation using anti-carbonation coatings based on synthetic…
Abstract
Purpose
The purpose of this study is to examine how well reinforced concrete structures can be shielded against concrete carbonation using anti-carbonation coatings based on synthetic polymer.
Design/methodology/approach
Applying free radical polymerization, an acrylate terpolymer emulsion that a surfactant had stabilized was created. A thermogravimetric analysis, minimum film-forming temperature, Fourier transform infrared spectroscopy and particle size distribution are used to characterize the prepared eco-friendly water base acrylate terpolymer emulsion. Using three different percentages of the acrylate terpolymer emulsion produced, 35%, 45% and 55%, the anti-carbonation coating was formed. Tensile strength, tensile strain, elongation, crack-bridging ability, carbon dioxide permeability, chloride ion diffusion, average pull-off adhesion strength, water vapor transmission, gloss, wet scrub resistance, QUV/weathering and storage stability are the characteristics of the anti-carbonation coating.
Findings
The formulated acrylate terpolymer emulsion enhances anti-carbonation coating performance in CO2 permeability, Cl-diffusion, crack bridging, pull-off adhesion strength and water vapor transmission. The formed coating based on the formulated acrylate terpolymer emulsion performed better than its commercial counterpart.
Practical implications
To protect the steel embedded in concrete from corrosion and increase the life span of concrete, the surface of cement is treated with an anti-carbonation coating based on synthetic acrylate terpolymer emulsion.
Social implications
In addition to saving lives from building collapse, it maintains the infrastructure for the long run.
Originality/value
The anti-carbonation coating, which is based on the synthetic acrylate terpolymer emulsion, is environmentally benign and stops the entry of carbon dioxide and chlorides, which are the main causes of steel corrosion in concrete.
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Nader L. Labib, Fouad Zahran, Mohamed Adel Youssef, Azza M. Mazrouaa and Manal Gamal Mohamed
This study aims to extend the pot life without altering the qualities and performance of the coating, which is important to increase when manufacturing polyurethane coatings.
Abstract
Purpose
This study aims to extend the pot life without altering the qualities and performance of the coating, which is important to increase when manufacturing polyurethane coatings.
Design/methodology/approach
An acrylic polyol from a mixture of different monomers of hydroxypropyl methacrylate, methacrylic acid, 2-ethylhexyl acrylate, methyl methacrylate and n-butyl methacrylate was prepared with different ratios of 2,4-pentanedione as a pot life extender. The reaction takes place in presence of di-tert-butyl peroxide as initiator with samples (T1–T7). The physical properties of prepared acrylic polyol were characterized. Then, coating polyurethane varnish was prepared from the prepared acrylic polyol with an aliphatic polyisocyanate in a 1:1 equivalent ratio of OH:NCO at room temperature, in presence of paint thinner (diluents/solvent) and dibutyltin dilaurate as a catalyst to give samples (T1C–T7C). This coating was evaluated via Fourier-transform infrared spectroscopy, drying time, hardness and gloss, distinctness of image and reflected image quality.
Findings
The coating has a prolonged pot life while still maintaining the other qualities, thanks to the greater 2,4-pentanedione content.
Originality/value
It is desired to have a paint which has a satisfactory pot life, short curing time and reduces many drawbacks such as inefficient working and deterioration of the paint before application.
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Sally Raouf Ragheb Garas, Amira Fouad Ahmed Mahran and Hassan Mohamed Hussein Mohamed
This paper aims to investigate the impact of perceived risk, ethical judgement, value consciousness, susceptibility to social influence and neutralisation on counterfeit clothes…
Abstract
Purpose
This paper aims to investigate the impact of perceived risk, ethical judgement, value consciousness, susceptibility to social influence and neutralisation on counterfeit clothes and accessories purchase intention in Egypt.
Design/methodology/approach
A single cross-sectional survey was conducted. Questionnaires were used to collect data from 361 counterfeit buyers in Egypt. To test the hypotheses, partial least squares-structural equation model was applied.
Findings
The results indicate that neutralisation, perceived risk and susceptibility to social influence significantly impact attitudes towards counterfeiting and purchase intentions, whereas value consciousness impacts counterfeit purchase intention. In addition, attitudes mediate the effects of perceived risk, susceptibility to social influence and neutralisation on purchase intention.
Practical implications
Brand producers/retailers and the government need to adhere to a number of practices to curb counterfeit demand, mainly by tackling the neutralisation’s impacts, demonstrating various risks of counterfeiting and developing a collective attitude against counterfeiting.
Originality/value
This study contributes to the ethical decision-making literature by empirically testing and quantifying the impact of neutralisation on shaping counterfeit buyers’ attitudes and purchase intention.
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Sally Raouf Ragheb Garas, Amira Fouad Ahmed Mahran and Hassan Mohamed Hussein Mohamed
This paper aims to study the effect of internal branding on brand supporting behaviour (in-role and extra-role) of bank employees in Egypt. It proposes a model which examines the…
Abstract
Purpose
This paper aims to study the effect of internal branding on brand supporting behaviour (in-role and extra-role) of bank employees in Egypt. It proposes a model which examines the relationship between internal branding and employees’ brand supporting behavior, mediated by employees’ role clarity, affective commitment and continuance commitment, to provide insights into the way in which employees can become brand champions.
Design/methodology/approach
A single cross-sectional descriptive research was employed. A questionnaire was used to collect data from 400 frontline bank employees. Confirmatory factor analysis was used to test the validity of the scales, and structural equation modelling was used to test the research hypotheses.
Findings
The results showed that internal branding did not have a direct significant impact on employees’ in-role and extra-role behaviour. However, that impact only took place through employees’ role clarity and their affective commitment.
Practical implications
The findings suggest that banks can differentiate their offers and build powerful corporate brands through their employees’ brand supporting behaviour. Therefore, bank managers need to consider internal branding within the context of a corporate marketing orientation. Moreover, enhancing employees’ role clarity and affective commitment will ensure sustainable brand supporting behaviour.
Originality/value
This research is the first quantitative study to examine the impact of role clarity and continuance commitment as possible mediators to the proposed relationship. It further adds up to the internal branding literature, which is mostly qualitative or conceptual and thus suffers from limited conclusive evidence in terms of internal branding benefits and practical implications.
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Mohamed Asmy Mohd Thas Thaker, Md Fouad Amin, Hassanudin Mohd Thas Thaker, Ahmad Khaliq and Anwar Allah Pitchay
The present paper aims to propose a viable alternative model for human capital development (HCD), termed as the integrated cash waqf micro enterprises investment (ICWME-I) model…
Abstract
Purpose
The present paper aims to propose a viable alternative model for human capital development (HCD), termed as the integrated cash waqf micro enterprises investment (ICWME-I) model, which is expected to contribute to the development of micro enterprises in Malaysia.
Design/methodology/approach
This is a conceptual paper for the development of the ICWME-I model. It is purely qualitative in nature, using content analysis. It comprehensively reviews the literature related to HCD issues faced by micro enterprises and existing studies related to cash waqf (Islamic endowment) to construct the ICWME-I model.
Findings
The proposed ICWME-I model is specially designed for HCD of micro enterprises. It is an appropriate initiative to upgrade micro enterprises through HCD programmes by ensuring proper utilization of cash waqf funds to build modern training centres at subsidized costs with state-of-the-art facilities. The training centres would subsidize the participation fees of micro enterprises and provide them with facilities to undertake education and training programmes, as well as other kinds of activities for upgrading, improving and enhancing human capital capacity and skills of micro enterprises. The potential challenges of the ICWME-I model are also highlighted in this study.
Research limitations/implications
This paper attempts to construct the ICWME-I model based on an extensive review of literature related to micro enterprises, cash waqf and HCD. Among its major limitations is the fact that the ICWME-I model is not empirically validated and tested in this research. This can be carried out in future studies.
Practical implications
The present study could have an enormous impact on micro entrepreneurs via HCD programmes. The most important impact would be on government budgets, as this ICWME-I model is expected to generate its own funds from cash waqf for micro enterprises’ HCD.
Originality/value
This paper brings forward an original and viable model to develop human capital for micro enterprises development. This model involves the building of training centres using cash waqf raised from donors.
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Rania Ahmed Aly El Garem, Amira Fouad and Hassan Mohamed
This paper explores the effect of perceived service quality, trust, perceived value and perceived cost on patient satisfaction and loyalty as well as exploring the moderating…
Abstract
Purpose
This paper explores the effect of perceived service quality, trust, perceived value and perceived cost on patient satisfaction and loyalty as well as exploring the moderating role of the sociodemographic factors.
Design/methodology/approach
The data were gathered from 462 patients via a structured questionnaire, while structural equation modeling was utilized for the analysis.
Findings
Results indicated that trust, perceived value and patient satisfaction have important roles in shaping the patient loyalty, while patient satisfaction was found to fully mediate the patient’s perceived service quality. Loyalty relationship was also found to partially mediate the trust–loyalty relationship. Nonetheless, the patient’s satisfaction–loyalty relationship was found to be only moderated by the age factor.
Practical implications
Implications are provided to the Egyptian private hospitals in order for them to formulate improvement plans as well as set higher standards of conduct.
Originality/value
This original research is the first one, up to the researcher knowledge, that explores the drivers of patient satisfaction in the private hospitals in Egypt.
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Tamer Zaki Fouad Mohamed, Chia-Hua Chang and Yu-Chuan Huang
This paper aims to explore the role of international quality assurance and accreditation on higher education quality improvement and competitiveness, as well as assessing the…
Abstract
Purpose
This paper aims to explore the role of international quality assurance and accreditation on higher education quality improvement and competitiveness, as well as assessing the associated benefits and challenges in the Asian context with reference to Taiwan.
Design/methodology/approach
The paper used a qualitative approach to examine the case study of Southern Taiwan University of Science and Technology (STUST) accredited by the Association to Advance Collegiate Schools of Business (AACSB). The paper collected survey responses from service providers (i.e. STUST faculty and AACSB) and focus group discussions with students to bridge the perception-expectation gap.
Findings
The qualitative results highlighted 10 key success factors and performance indicators which were later used to build a balanced scorecard (BSC) strategy for STUST quality improvement and competitiveness. Findings show that education quality assurance (via AACSB process) can directly influence the competitive advantage (i.e. for AACSB, STUST and Students) or indirectly via education quality enhancement. The results from faculty and students are consistent with the value co-creation trend to achieve continuous quality improvement more effectively and efficiently.
Originality/value
This research paper is unique as the first qualitative in-depth study to discuss assurance related factors that positively or negatively affect competitiveness and quality improvement for Higher Education Institutions (HEIs) in Asia and Taiwan. The paper also contributed by designing a BSC framework and strategy-map applicable to HEIs.
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