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1 – 10 of 12Amer Fahmy, Tarek Hassan, Hesham Bassioni and Ronald McCaffer
Basic project control through traditional methods is not sufficient to manage the majority of real-time events in most construction projects. The purpose of this paper is to…
Abstract
Purpose
Basic project control through traditional methods is not sufficient to manage the majority of real-time events in most construction projects. The purpose of this paper is to propose a Dynamic Scheduling (DS) model that utilizes multi-objective optimization of cost, time, resources and cash flow, throughout project construction.
Design/methodology/approach
Upon reviewing the topic of DS, a worldwide internet survey with 364 respondents was conducted to define end-user requirements. The model was formulated and solution algorithms discussed. Verification was reported using predefined problem sets and a real-life case. Validation was performed via feedback from industry experts.
Findings
The need for multi-objective dynamic software optimization of construction schedules and the ability to choose among a set of optimal alternatives were highlighted. Model verification through well-known test cases and a real-life project case study showed that the model successfully achieved the required dynamic functionality whether under the small solved example or under the complex case study. The model was validated for practicality, optimization of various DS schedule quality gates, ease of use and software integration with contemporary project management practices.
Practical implications
Optimized real-time scheduling can provide better resources management including labor utilization and cost efficiency. Furthermore, DS contributes to optimum materials procurement, thus minimizing waste.
Social implications
Optimized real-time scheduling can provide better resources management including labor utilization and cost efficiency. Furthermore, DS contributes to optimum materials procurement, thus minimizing waste.
Originality/value
The paper illustrates the importance of DS in construction, identifies the user needs and overviews the development, verification and validation of a model that supports the generation of high-quality schedules beneficial to large-scale projects.
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A new series of polyfunctionally substituted pyridine azo‐ and hydrazono dyes suitable for screen printing of polyester, cotton and polyester/cotton blend fibres have been…
Abstract
A new series of polyfunctionally substituted pyridine azo‐ and hydrazono dyes suitable for screen printing of polyester, cotton and polyester/cotton blend fibres have been synthesised. The prints are characterised by high depth of colour and good fastness to light and wet processings. Proofs of structure of the synthesised compounds based on microanalytical and spectroscopic data are given and discussed. The effect of substituents on the electronic absorption spectra and on the dye/fibre binding mechanism has been studied.
Presents a review on implementing finite element methods on supercomputers, workstations and PCs and gives main trends in hardware and software developments. An appendix included…
Abstract
Presents a review on implementing finite element methods on supercomputers, workstations and PCs and gives main trends in hardware and software developments. An appendix included at the end of the paper presents a bibliography on the subjects retrospectively to 1985 and approximately 1,100 references are listed.
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Marwa M. El-Ashmouni and Ashraf M. Salama
The purpose of this paper is to develop an analytical account on the contemporary architecture of Cairo with emphasis on the past three decades, from the early 1990s to the…
Abstract
Purpose
The purpose of this paper is to develop an analytical account on the contemporary architecture of Cairo with emphasis on the past three decades, from the early 1990s to the present. The paper critically analyses narratives of the plurality of “isms”, within architectural vocabulary and discourse, that resulted from the contextual particularities that shaped it.
Design/methodology/approach
Three lines of inquiry are envisioned as overarching aspects of architecture: the chronological, the interventional and the representational. These discussions are underpinned by the discourse of decolonialisation and cosmopolitanism, posited sequentially by Frantz Fanon in The Wretched of the Earth (1961), and Ulrich Beck in The Cosmopolitan Vision (2004). The analysis expands to interrogate these two notions as prelude for reflecting on representations of selected projects: The Smart Village (2001); the Great Egyptian Museum (2002), Al-Azhar Park (2005), American University in Cairo New Campus (2008/2009), and the New Administrative Capital (2018).
Findings
The investigation on the interventional and the representational levels via aspects of discursivity and contradictions highlights that decolonisation and cosmopolitanism are two inseparable facets in the architectural practice in Egypt’s 21st century. These indivisible notions are based on idiosyncratic core to human experience, which emerged from concurrent overturning historical and secular everyday life striving to suppress ideological supremacy.
Research limitations/implications
Further detailed examples can be developed to offer discerning elucidations relevant to both notions of cosmopolitanism and decolonialisation.
Originality/value
The paper offers novel theoretical analysis of Cairo’s most recent architecture. The reflection on the notions of decolonialisation and cosmopolitanism is a timely example of the complex cultural encounters that have shaped the Egyptian architecture, given the recent interventions by the “Modern State” that legitimised such notions.
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Salwa Moustafa Amer Mahmoud, Tarek Hamdy, Mohamed Fares, Wissam Ayman, Shrouk Muhamed, Aya Abdel Khaliq and Lilian Salah
This paper aims to investigate the ability of traditional biopolymers, such as funori or the nanoscale form of cellulose nanocrystals, to consolidate fragile paper and preserve it…
Abstract
Purpose
This paper aims to investigate the ability of traditional biopolymers, such as funori or the nanoscale form of cellulose nanocrystals, to consolidate fragile paper and preserve it for as long as possible.
Design/methodology/approach
Degraded papers dating back two centuries were separated into paper samples for consolidation processes. Funori – a marine spleen – was used as a traditional consolidation material and a mixture with ZnO NPs compared with modern materials, such as cellulose nanocrystals. The samples were aged for 25 years, examinations and analyses were performed using scanning electron microscopy and color change was assessed using the CIELAB system, X-ray diffraction and Fourier-transform infrared spectroscopy.
Findings
According to the results, using traditional materials to consolidate damage, such as funori, after aging resulted in glossiness on the surface, a color change and increased water content and oxidation. Furthermore, samples treated with a mixture of ZnO NPs and funori revealed that the mixture improved the sample properties and increased the degree of crystallization. Cellulose nanocrystals improved the surface, filled gaps, formed bridges between the fibers and acted as a protector from aging effects.
Originality/value
This paper highlights the ability of nanomaterials to enhance the properties of materials as additives and treat the paper manuscripts from weaknesses.
This study aims to evaluate Islamic bank compliance with the accounting and auditing organisation for Islamic financial institutions (AAOIFI), assess the impact of multiple…
Abstract
Purpose
This study aims to evaluate Islamic bank compliance with the accounting and auditing organisation for Islamic financial institutions (AAOIFI), assess the impact of multiple accounting standards in Islamic banking, examine the need for private accounting standards and assess international financial reporting standards (IFRS) compatibility with Islamic banking and analyse financial leasing accounting in Islamic banking compared to IFRS 16.
Design/methodology/approach
A combination of comparative theoretical analysis, physical examination, and semi-structured interviews has been used as a research methodology. These methods are interconnected and complement each other to provide a comprehensive approach to address the research questions.
Findings
Islamic banks in various countries show varying compliance with AAOIFI accounting standards. Some fully comply, while others adopt a hybrid approach combining AAOIFI and IFRS. Differences in accounting treatments can result in conflicts, asset inflation and financial statement discrepancies. Challenges and criticisms faced by AAOIFI standards include violating the matching principle and lacking faithful representation. Collaboration among academics, standards-setting bodies and organisers is crucial for guiding the reporting of Islamic financial statements.
Practical implications
The research identifies gaps in implementing Islamic accounting standards and proposes strategies to enhance compliance, improve performance and increase transparency in Islamic financial institutions. It highlights the importance of a harmonised and universally accepted accounting framework for Islamic banking, considering the compatibility between IFRS and Islamic principles.
Social implications
Social implications have arisen regarding the global acceptance of Islamic finance, which leads to an increase in socially Islamic finance exchange.
Originality/value
This research examines the consequences of using multiple accounting standards in the Islamic banking industry and discusses the need for private accounting standards and compatibility with IFRS.
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Yasmin Khodary and Nehal Hamdy
This study aims to detect the main factors impeding the anti-female genital mutilation (FGM) efforts in Egypt post the January 25 revolution, with a special focus on the era of…
Abstract
Purpose
This study aims to detect the main factors impeding the anti-female genital mutilation (FGM) efforts in Egypt post the January 25 revolution, with a special focus on the era of president El-Sisi. The purpose of this paper is to explain the reasons behind the continuation of violence against women in Egypt, namely, FGM, in light of the patriarchal structures and the state willingness to address that challenge.
Design/methodology/approach
The study utilizes a qualitative methodology. The study embarks on in-depth semi-structured interviews with 23 participants who experienced FGM and nine key informants from medical, religious, political and civil society backgrounds, including a professor of pathology, a gynecologist, a diplomatic researcher in Al-Azhar, three members of parliament, a representative of the Ministry of Population, the reporter of the National Council for Women and a representative of Nazra non-governmental organization for feminist studies in Egypt.
Findings
The findings reveal that FGM remains prevalent not only due to the persisting socio-cultural context that continues to embrace and reproduces gender inequalities, but also because of the insufficient political will to combat FGM and enforce the required laws.
Social implications
FGM is considered one form of gender inequality perpetuated by social, cultural and economic structures. It is recognized internationally as a crime and a violation against women’s rights as per the Universal Declaration of Human Rights, the Convention on the Elimination of All Forms of Discrimination against Women, the Convention on the Rights of the Child, etc. Although the Egyptian Government passed laws banning the practice of FGM, it continues to form a challenging problem to social workers, women activists, human rights groups and public health officials.
Originality/value
Little work has been done to investigate FGM post the January 25 revolution in Egypt and identify the main factors impeding the anti-FGM efforts in Egypt. This work fills this gap and concludes with some lessons learnt to fight FGM and improve the anti-FGM efforts.
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This study aims to the synthesis of some novel 4-arylazo-3-hydroxythiophene analogues containing sulphapyridine and sulphathiazole dyestuffs and studying their application in…
Abstract
Purpose
This study aims to the synthesis of some novel 4-arylazo-3-hydroxythiophene analogues containing sulphapyridine and sulphathiazole dyestuffs and studying their application in dyeing polyester fabrics and rendering their antibacterial efficacy.
Design/methodology/approach
Simultaneous dyeing and antibacterial finishing for polyester fabric using a new antibacterial disperse dye having a modified chemical structure to thiophene dyes were studied. Construction of the thiophene dyes was carried out by diazo-coupling of diazotized sulphonamide-containing heterocyclic rings sulphapyridine and sulphathiazole with ethyl α-phenylthiocarbamoyl-acetoacetate followed by cyclizing the produced 2-arylazo-thioacetanilide with various α-halogenated reagents. All newly synthesized compounds were characterized by elemental analysis and extensive study of their spectral data (IR and 1H-NMR). The dyeing characteristics of these thiophene dyestuffs were evaluated at optimum conditions. Antibacterial activities of the obtained thiophene dyes were studied against some Gram-positive and Gram-negative bacteria.
Findings
The synthesized thiophene-containing sulphonamides dyes were applied on polyester fabric. The modified dyes exhibited a good fastness properties and antibacterial efficacy against some Gram-positive and Gram-negative bacteria. Synthesized dyes showed higher antibacterial potency than the reference standard drug.
Research limitations/implications
Synthesis of these disperse azo dyes for textile dyeing had never been reported previously.
Practical implications
The dyestuffs derived from thiophene are reasonable azo disperse dyestuffs giving good all-round fastness properties on polyester fabrics.
Originality/value
Thiophene dyes are used for dyeing polyester fabrics with brilliant colour and good fastness properties. The presence of sulphonamides moieties increase their fastness properties and elevate their antibacterial properties. Moreover, they can be used as antimicrobial finish due to their bactericidal properties on dyed textiles. This work afforded a new thiophene colorant that can be used in many different uses like polyester packing, thread Surgery, blends and other uses in medical textile.
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Hawra Alshula, Kawther Alawami, Hawra Abdullatif, Zahra Alhamood, Zainab Alshaikh, Jumanah Alawfi, Tunny Purayidathil, Omar Abuzaid, Yassmin Algindan and Rabie Khattab
This study aims to explore the link between prevalent risk factors for early childhood diarrhea, including hygiene, feeding, weaning practices and maternal education and the…
Abstract
Purpose
This study aims to explore the link between prevalent risk factors for early childhood diarrhea, including hygiene, feeding, weaning practices and maternal education and the occurrence and severity of early childhood diarrhea in Saudi Arabia.
Design/methodology/approach
A case-control study was conducted, involving 98 mothers from the Eastern Region of Saudi Arabia (51 cases and 47 controls). Data were collected from both hospital and community sources. The collected data were statistically analyzed and depicted using descriptive statistics and frequency tables.
Findings
Demographic data revealed that 60% of mothers were housewives, 75% had normal deliveries and all babies were full term. In the study cohort, 44% of children aged one to two years. Four domains were compared: diarrheal management, hygiene, weaning and feeding practices. Diarrheal management was suboptimal in some cases: 29% increased fluid intake, 10% maintained adequate food intake, 50% sought medical advice, 58% were familiar with oral rehydration solutions and only 37% used them. Hygiene practices were deficient, with 35% using wipes or sanitizers, 64% handwashing before feeding and 52% adhering to the recommended 10-s duration. Controls exhibited better hygiene practices. Weaning practices were generally similar, with no significant differences between the two groups.
Originality/value
To the best of the authors’ knowledge, this is the first study to collectively report on the risk factors linked to early childhood diarrhea in Saudi Arabia. This study yields significant insights, highlighting the crucial role of managing diarrhea, educating mothers and implementing proper household practices in impacting the occurrence and severity of this perilous ailment.
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Timothy O. Olawumi and Daniel W.M. Chan
The purpose of this paper is to identify the key facilitating factors for smart sustainable practices (SSP) and develop a project evaluation model (PEM) for SSP implementation in…
Abstract
Purpose
The purpose of this paper is to identify the key facilitating factors for smart sustainable practices (SSP) and develop a project evaluation model (PEM) for SSP implementation in Nigeria and Hong Kong. SSP is coined from the integration of digital technologies such as Building Information Modelling (BIM) to facilitate sustainability practices.
Design/methodology/approach
The study employed a quantitative research design approach using empirical questionnaire surveys to solicit the opinions of 69 and 97 construction practitioners in Nigeria and Hong Kong. Purposive and snowball sampling techniques were used to identify the potential survey respondents. The fuzzy synthetic evaluation technique was used to develop the PEMs.
Findings
The findings revealed that adequate technical expertise of the SSP processes is critical in enhancing its implementation in Hong Kong and Nigeria; as well as the provision of training programs for specialists in smart and sustainable initiatives. Meanwhile, the study's findings advocated that for an SSP-enabled construction project, its project performance is mainly influenced by the client's satisfaction level and the early involvement of the project teams.
Research limitations/implications
The study's results are limited to the Nigeria and Hong Kong construction industries.
Practical implications
Construction stakeholders such as the clients, developers, contractors can utilize the PEMs to determine and track SSP initiatives implementation in building projects in a reliable and practical way.
Originality/value
No tool has been developed for evaluating SSP initiatives at the project level in the construction industry. Using case studies of Hong Kong and Nigeria, PEM indices were developed to measure and track SSP implementation in construction projects.
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