Noha M. Hassan, Talal Al Maazmi, Ali Al Hadhrami and Mohamed Al Hosani
The purpose of this study is to examine whether discrete event simulation (DES) can be equally utilised in the design phase of the architecture, engineering and construction…
Abstract
Purpose
The purpose of this study is to examine whether discrete event simulation (DES) can be equally utilised in the design phase of the architecture, engineering and construction industry (AEC) projects to achieve a more efficient facility layout. Facility design is a complex process involving diverse disciplines, tasks, tools and events. Integrating key participants involved in the design generally leads to a more satisfied end-user. The AEC thoroughly examined different approaches to enhance this integration through improved communication, visualisation and coordination among the different project participants. DES has been used extensively as a tool for analysis and evaluation, especially during the construction process.
Design/methodology/approach
A facility planning framework is illustrated that combines both qualitative and quantitative analysis to achieve a performance-driven design. An investigative qualitative research approach is used to determine the design criteria and performance metrics based on the end-user and authority requirements. This approach is achieved by conducting critical reviews, surveys, focus groups and interviews. The research findings and collected data are used to perform a quantitative analysis to determine the effectiveness of the proposed design if constructed using DES. The potential of the method is shown through a case study to design a mall parking facility.
Findings
The case study illustrated the capability of DES to improve construction design by comparing the artificially designed facility following the proposed framework to an existing facility. Increasing customer satisfaction by enhancing safety, minimising waiting time and maximising parking spot availability were the performance metrics used to evaluate the designs. DES was used as a tool to measure these criteria. Utilising DES in facility design increased resource utilisation and resulted in a safer layout that satisfied the end-user, client and authority requirements.
Originality/value
Previous studies focused on integrating other modules such as energy, HVAC, lighting, acoustics and life cycle analysis to achieve a performance-driven design. The overwhelming majority of the literature focused on the use of DES for improving construction operations. Research literature about integrating DES as a tool for concurrent life cycle design was scarce. This research demonstrated that DES is an effective method and a vital key for determining the facility’s operational efficiency after construction.
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Hussin A. M. Yahia, Azzan Majid Al-Shukaili, Ram Kishore Manchiryal, Taleb Eissa and Ali Ahmed Mohammed
The global urban population is expanding rapidly, leading to higher energy consumption, air pollution, and traffic jams in cities that require more efficient solutions. Smart…
Abstract
The global urban population is expanding rapidly, leading to higher energy consumption, air pollution, and traffic jams in cities that require more efficient solutions. Smart cities are anticipated to address the efficiency of urban infrastructure. In the Sultanate of Oman, the government launched the idea of establishing smart cities to promote large-scale planned urban expansion, especially in the capital, Muscat, as well as to promote accelerated development and growth. As the Sultanate embarks on this journey to establish smart cities “such as the Sultan Haitham City Project” to drive development in the country. The objective of this study is to ascertain the principles and facets of sustainable development and its contribution to the formulation of urban development policies. Additionally, this study seeks to evaluate the notion of smart cities along with their distinctive features and constituents. As the Sultanate of Oman embarks on this journey to create engines and alternatives to develop the economy and push the wheel of development in the country according to Oman Vision 2040, this chapter outlines the way to make this dream a reality. The chapter provides strategies for planned urban expansion, especially in the capital, Muscat, and guidelines for the development of smart cities. It explains in detail the difficulties faced by some smart cities in the world.
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Keywords
Yemen partition prospects.
Details
DOI: 10.1108/OXAN-DB213339
ISSN: 2633-304X
Keywords
Geographic
Topical
M.A. Mansour, Sameh Elsayed Ahmed and Ali J. Chamkha
This paper aims to investigate the entropy generation due to magnetohydrodynamic natural convection flow and heat transfer in a porous enclosure filled with Cu-water nanofluid in…
Abstract
Purpose
This paper aims to investigate the entropy generation due to magnetohydrodynamic natural convection flow and heat transfer in a porous enclosure filled with Cu-water nanofluid in the presence of viscous dissipation effect. The left and right walls of the cavity are thermally insulated. There are heated and cold parts, and these are placed on the bottom and top wall, respectively, whereas the remaining parts are thermally insulated.
Design/methodology/approach
The finite volume method is used to solve the dimensionless partial differential equations governing the problem. A comparison with previously published woks is presented and is found to be in an excellent agreement.
Findings
The minimization of entropy generation and local heat transfer according to different values of the governing parameters are presented in details. It is found that the presence of magnetic field has negative effects on the local entropy generation because of heat transfer and the local total entropy generation. Also, the increase in the heated part length leads to a decrease in the local Nusselt number.
Originality/value
This problem is original, as it has not been considered previously.
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The airport is now under the control of Aden security chief Shallal Shayei, who is allied with the popular former governor of Aden, Aidrous al-Zubaidi. Aden airport has been a…
Details
DOI: 10.1108/OXAN-DB221261
ISSN: 2633-304X
Keywords
Geographic
Topical
The demonstrations follow armed clashes in mid-February, when Hadi’s 'Protection Brigade' (commanded by his son) attempted to take over Aden airport from a ‘Security Belt’ force…
Shan Cao, Faqing He and Jinwei Gao
Important reserves of oil and gas, which are left to be discovered and produced, are mainly concentrated in challenging locations and under severe conditions such as high pressure…
Abstract
Purpose
Important reserves of oil and gas, which are left to be discovered and produced, are mainly concentrated in challenging locations and under severe conditions such as high pressure (HP)/high temperature (HT). The presence of aggressive environments including H2S, CO2 and chlorides plus HP/HT causes a series of corrosion problems, which cost the oil industry billions of dollars a year. Thus, there is an increasing challenge for tubes (i.e. oil country tubular goods, for short, OCTG) used in producing oil and gas. The purpose of this study is to summarize different kinds of corrosion problems and their mitigation, to more efficiently protect OCTG from corrosion.
Design/methodology/approach
To effectively select proper mitigation methods, the mechanism of corrosion must be understood, which can be classified into four categories: sweet corrosion, sour corrosion, galvanic corrosion and microbiologically induced corrosion. Also, the effects of environmental and material factors on the corrosion rate are presented. Subsequently, current technology of mitigating these corrosion problems has been discussed, including the development of materials, application of chemical inhibitors and application of protective layers.
Findings
It is stressed that limits exist for each individual mitigation method; therefore, a careful balance between economic life of OCTG and safety in operation is required.
Originality/value
The main purpose of this essay is to give a brief review and detailed introduction and analysis about those technologies.
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Jalil Manafian and Cevat Teymuri sindi
This paper aims to discuss the approximate solution of the nonlinear thin film flow problems. A new analytic approximate technique for addressing nonlinear problems, namely, the…
Abstract
Purpose
This paper aims to discuss the approximate solution of the nonlinear thin film flow problems. A new analytic approximate technique for addressing nonlinear problems, namely, the optimal homotopy asymptotic method (OHAM), is proposed and used in an application to the nonlinear thin film flow problems.
Design/methodology/approach
This approach does not depend upon any small/large parameters. This method provides a convenient way to control the convergence of approximation series and to adjust convergence regions when necessary.
Findings
The obtained solutions show that the OHAM is more effective, simpler and easier than other methods. The results reveal that the method is explicit. By applying the method to nonlinear thin film flow problems, it was found to be simpler in applicability, and more convenient to control convergence. Therefore, the method shows its validity and great potential for the solution of nonlinear problems in science and engineering.
Originality/value
The proposed method is tested upon nonlinear thin film flow equation from the literature and the results are compared with the available approximate solutions including Adomian decomposition method (ADM), homotopy perturbation method, modified homotopy perturbation method and HAM. Moreover, the exact solution is compared with the available numerical solutions. The graphical representation of the solution is given by Maple and is physically interpreted.
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Omer Faruk Cingir and Thirunaukarasu Subramaniam
Local cultures under the nation-states have evolved and produced new concepts. Migrations and cultural interactions have also influenced the language. Thus, different…
Abstract
Purpose
Local cultures under the nation-states have evolved and produced new concepts. Migrations and cultural interactions have also influenced the language. Thus, different conceptualisations of migration have developed in the “Malay World.” Language is not only a product of ecological and geographical environment, but it is also a result of human mobilisations and cultural intercourses. The differences caused by various Malay World conceptualisations are also related to different interactions, histories and social realities. In the “Malay World,” Bahasa Malaysia and Bahasa Indonesia are threatened by English hegemony. At this juncture, demonstrating these interrelationships helps one to understand local cultural intercourses between culture and social reality.
Design/methodology/approach
This paper implements the critical discourse analysis, notably, the dialectical–relational approach to different conceptualisations in the “Malay World.” Thus, it aims to discuss the reasons behind the usage of migration-related terms in Indonesia and Malaysia. How migration terms mainly shape social forms, process and circulate in the social world is argued in this paper. The authors target to investigate the local meaning sets for migration concepts and explore self-reflectivity in and critique of the usage of established images between Bahasa Indonesia and Malay concepts, using a Critical Discourse Analysis framework. The discussion section attempts to analyse and explain dialectical relations between social norms and social elements.
Findings
Trade diasporas, culture and identities of immigrants, cultural richness and multi-ethnicity have continuously diversified the conceptualisations. These concepts also indicate cultural dominations and exclusions. Thus, the migration dynamics in Southeast Asia might be understood by scrutinising these boundaries and patterns. This study showed that migration conceptualisations in the Malay world are substantially locally determined. Local wisdom and cultural codifications prevail in the migration context. A deeper understanding of the local context is essential in evaluating the international refugee protection mechanisms in these countries as neither Indonesia nor Malaysia are parties to the Geneva Convention Relating to the Status of Refugees.
Research limitations/implications
Definitions of various types of migration are referred to in multiple terminologies throughout the Nusantara. While in Bahasa Melayu, migrant refers to pendatang, nomadic refers to nomad; refugee refers to pelarian, to migrate refers to berhijrah; in Bahasa Indonesia, migrant refers to migran, nomadic or nomad refers pengembara, refugee refers to pengungsi and migrate, or migration refers migrasi. At the same time, in the Nusantara, many communities define themselves according to their geographical features, such as Orang Sungai, Orang Laut or Orang Kuala. In this context, defining leads to a significant impact on shaping the discourses and approaches.
Practical implications
Definitions determine the borders, flexibilities, plausibility and flows of terms. Critical Discourse Analysis especially placed emphasis on languages and their impacts on social reality. According to Critical Discourse Analysis, terms and their genealogies, transformations and limits are vital in order to comprehend social facts and truth. To understand the change and continuity of migration flow in Southeast Asia, scrutinising the migration-related terms is crucial. This study aims to examine those main terms, their connection with other words, and their transformation in the Malay world sociologically. This as such will shed more light on the social changes regarding genealogical relationships and their usage in daily life within the Critical Discourse Analysis.
Originality/value
This study aims to fulfil the gap between authentic concepts of migration literature in Nusantara. Although Bahasa Melayu and Bahasa Indonesia have a strong connection and interaction, migration definitions in these languages are separated from each other. Cultural and social elements greatly influence migration-connected terms in Bahasa Melayu and Bahasa Indonesia. Without this understanding and the absence of local context, any assessment of their refugee protection systems may be incomplete. This study deals with different cultural nuances and refinements and their migration conceptualisations and histories are based on the ground of their social realities.
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Hei-Chia Wang, Martinus Maslim and Hung-Yu Liu
A clickbait is a deceptive headline designed to boost ad revenue without presenting closely relevant content. There are numerous negative repercussions of clickbait, such as…
Abstract
Purpose
A clickbait is a deceptive headline designed to boost ad revenue without presenting closely relevant content. There are numerous negative repercussions of clickbait, such as causing viewers to feel tricked and unhappy, causing long-term confusion, and even attracting cyber criminals. Automatic detection algorithms for clickbait have been developed to address this issue. The fact that there is only one semantic representation for the same term and a limited dataset in Chinese is a need for the existing technologies for detecting clickbait. This study aims to solve the limitations of automated clickbait detection in the Chinese dataset.
Design/methodology/approach
This study combines both to train the model to capture the probable relationship between clickbait news headlines and news content. In addition, part-of-speech elements are used to generate the most appropriate semantic representation for clickbait detection, improving clickbait detection performance.
Findings
This research successfully compiled a dataset containing up to 20,896 Chinese clickbait news articles. This collection contains news headlines, articles, categories and supplementary metadata. The suggested context-aware clickbait detection (CA-CD) model outperforms existing clickbait detection approaches on many criteria, demonstrating the proposed strategy's efficacy.
Originality/value
The originality of this study resides in the newly compiled Chinese clickbait dataset and contextual semantic representation-based clickbait detection approach employing transfer learning. This method can modify the semantic representation of each word based on context and assist the model in more precisely interpreting the original meaning of news articles.