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Article
Publication date: 13 April 2021

Mohammad B. Hamida and Mohammad A. Hassanain

This paper investigates the current practices of adaptive reuse projects, within the context of architecture, engineering, construction and facilities management (ACE/FM…

Abstract

Purpose

This paper investigates the current practices of adaptive reuse projects, within the context of architecture, engineering, construction and facilities management (ACE/FM) industries.

Design/methodology/approach

A mixed research methodology, combining qualitative and quantitative techniques, was followed. Literature review was performed to comprehend various aspects pertaining to building adaptive reuse. Three questionnaire surveys were administered on 90 AEC/FM practitioners, to investigate the current practices of adaptive reuse projects in Saudi Arabia. The questionnaire surveys were directed to 30 architects/engineers (A/Es), 30 contractors and 30 facilities managers, respectively, through face-to-face interviews. The qualitative and quantitative findings of each questionnaire survey were analyzed. Recommendations were proposed for each of the professional domains, to enhance the overall AEC/FM performance in future adaptive reuse projects.

Findings

The findings pointed out the necessity of accurately planning and designing the adaptive reuse in accordance with the spatial, technical, legislative, economic and functional considerations. The findings revealed the significance of contractors' role in conducting effective supervision over the managerial and technical processes during the implementation of the change of use. It also indicated the importance of the facilities managers' role in performing all daily operational activities, to maintain satisfactory performance of the adaptively reused buildings.

Originality/value

This paper contributes to the relevant literature to the building adaptation, through investigating the perspectives of AEC/FM practitioners on adaptive reuse projects. The findings would enable AEC/FM practitioners to improve their professional practices in future adaptive reuse projects, in an integrated manner.

Details

International Journal of Building Pathology and Adaptation, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2398-4708

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Article
Publication date: 15 September 2020

Mohammad B. Hamida, Mohammad A. Hassanain and Abdul-Mohsen Al-Hammad

This paper intends to review and assess the factors influencing adaptive reuse of commercial projects, throughout their life cycle, in Saudi Arabia.

Abstract

Purpose

This paper intends to review and assess the factors influencing adaptive reuse of commercial projects, throughout their life cycle, in Saudi Arabia.

Design/methodology/approach

A mixed approach of literature review, pilot-testing and questionnaire survey was utilized to identify and assess the factors affecting adaptive reuse of commercial projects. Thirty-eight factors were identified and categorized under four groups, corresponding to the key phases of the project life cycle. The questionnaire survey was administered to a targeted group of 90 architecture/engineering, construction and facilities management (AEC/FM) practitioners of building adaptive reuse, in the Eastern Province of Saudi Arabia. The relative importance index (RII) for each factor was calculated. Three levels of agreement, based on the ranking of the factors, among the respondents were determined.

Findings

The most important factors affecting adaptive reuse of commercial projects are: structural integrity of the building, municipal approval for the land use change, enforcement of safety procedures at the project site, compliance with health and safety measures and accuracy and completeness of the contract documents. A high level of agreement was observed among the three groups of respondents, on the ranking of the factors.

Originality/value

This research expands the body of knowledge, through providing AEC/FM practitioners, with the type, importance and ranking of the influential factors on adaptive reuse of commercial projects, throughout their life cycle.

Details

International Journal of Building Pathology and Adaptation, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2398-4708

Keywords

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Article
Publication date: 10 June 2021

Mohammad B. Hamida and Mohammad A. Hassanain

This paper aims to present a generic lifecycle framework model for guiding architects, engineers, contractors and facilities managers (AEC/FM) practitioners on the…

Abstract

Purpose

This paper aims to present a generic lifecycle framework model for guiding architects, engineers, contractors and facilities managers (AEC/FM) practitioners on the effective implementation of adaptive reuse projects.

Design/methodology/approach

A mixed approach of qualitative and quantitative techniques was followed in the development of the framework model. A literature review was conducted to comprehend the processes involved in adaptive reuse projects. In total, 90 AEC/FM practitioners were surveyed to identify the current practices in these projects. A generic framework model was then developed to standardize the processes involved, using integration definition for function modeling process modeling methodology. Face-to-face interviews with a targeted group of 30 AEC/FM practitioners were conducted, to validate the developed framework model, by assessing the importance and the frequency of implementing each function in the developed framework model.

Findings

The framework model consisted of four sequential processes, namely, assess the feasibility of the adaptive reuse project, design the adaptive reuse project, construct the adaptive reuse project and operate and maintain the adaptive reuse project. The validation confirmed the importance of all the framework functions and the frequency of their implementation.

Originality/value

This research contributes to the literature and the AEC/FM professions, through developing a lifecycle and knowledge-oriented framework model for building adaptive reuse. The framework presents clear documentation of adaptive reuse processes. Thus, it holds the potential of endeavoring on adaptive reuse projects to be more efficient.

Details

Journal of Engineering, Design and Technology , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1726-0531

Keywords

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Article
Publication date: 10 June 2021

Mohammad H. Salaheldin, Mohammad A. Hassanain, Mohammad B. Hamida and Ahmed M. Ibrahim

This study presents findings of post-occupancy evaluation (POE), through a performance assessment, on a polyclinic, as a health-care facility, in Saudi Arabia.

Abstract

Purpose

This study presents findings of post-occupancy evaluation (POE), through a performance assessment, on a polyclinic, as a health-care facility, in Saudi Arabia.

Design/methodology/approach

Review of the literature is conducted to identify the recent publications, on conducting POE, and performance indicators (PIs) assessing performance of health-care facilities. This research uses a triangulated approach by adopting several qualitative and quantitative methods, on a case study. The approach comprised conducting investigative walkthrough to assess the case study facility, interviews with group of occupants to assess its satisfaction levels. The findings were presented to a focus group, where a plan of recommendations was raised to improve the performance of the case study facility.

Findings

A total of 24 PIs were identified, and clustered, mainly under: “Thermal comfort”, “Natural lighting”, “Artificial lighting” and others. The case study has proven a satisfactory performance to the evaluated indicators. However, observations of performance snags were identified that formulated conclusions, related to: “Improvements to air temperature performance in summer season”, “Need of control on natural lighting due to glare”, “Accommodating an over demand for car parking spaces”, Need for development of systems dedicated for collection of occupants satisfaction” and “Enhancing circulation”.

Originality/value

There is a gap identified, through the literature review on availability of systematic conduct of POE, especially in health-care facilities. This paper contributes to the body of knowledge and professional practice, as a guiding systematic scheme, for the conduct of POE, which can be followed and expanded upon by future research.

Details

Journal of Facilities Management , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1472-5967

Keywords

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Article
Publication date: 1 July 2021

Mohammad H. Salaheldin, Mohammad A. Hassanain, Mohammad B. Hamida and Ahmed M. Ibrahim

This research presents the applicable international fire code requirements for educational facilities, in a comprehensive manner, and the findings of a case study to…

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Abstract

Purpose

This research presents the applicable international fire code requirements for educational facilities, in a comprehensive manner, and the findings of a case study to assess the level of compliance with these requirements.

Design/methodology/approach

A review of literature, fire codes and standards was conducted to identify the various sources of fire hazards in educational facilities and the required prevention measures. Accordingly, a code-compliance worksheet for assessing the fire prevention measures was developed. The worksheet included 34 prevention measures. It was implemented in a pharmacy college building, as a case study, to assess the compliance level with the code requirements. Recommendations were developed to improve the level of fire prevention in the case study facility.

Findings

The implemented worksheet facilitated identifying all the shortcomings in the prevention measures, in a methodological manner. These shortcomings included exceeded travel distance, absence of assembly point, inactive record keeping of fire inspection and maintenance works, deterioration of some extension cords and switches, alteration of some emergency doors, storage of combustibles in some electrical rooms and obstructions of the fire apparatus access road.

Practical implications

The research provides an assessment tool for fire prevention in educational facilities, which can be used by professionals for a code-compliant inspection. The findings of the case study as an example serve to expand the inspectors' observational significance while reducing subjectivity.

Originality/value

This research contributes to the educational facilities' context of health and safety domain in the literature. The research classifies the required fire prevention measures for an educational facility, according to the international applicable codes and standards. The case study demonstrates an applicable methodology for assessing the fire prevention measures and requirements.

Details

International Journal of Emergency Services, vol. 10 no. 3
Type: Research Article
ISSN: 2047-0894

Keywords

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Article
Publication date: 10 October 2021

Mohamed Dhia Massoudi, Mohamed Bechir Ben Hamida, Mohammed A. Almeshaal, Yahya Ali Rothan and Khalil Hajlaoui

The purpose of this paper is to examine numerically the magnetohydrodynamic (MHD) free convection and thermal radiation heat transfer of single walled carbon…

Abstract

Purpose

The purpose of this paper is to examine numerically the magnetohydrodynamic (MHD) free convection and thermal radiation heat transfer of single walled carbon nanotubes-water nanofluid within T-inverted shaped corrugated cavity comprising porous media including uniform heat source/sink for solar energy power plants applications.

Design/methodology/approach

The two-dimensional numerical simulation is performed by drawing on Comsol Multiphysics program, based on the finite element process.

Findings

The important results obtained show that increasing numbers of Rayleigh and Darcy and the parameter of radiation enhance the flow of convection heat. Furthermore, by increasing the corrugation height, the convection flow increases, but it decreases with the multiplication of the corrugation height. The use of a flat cavity provides better output than a corrugated cavity.

Originality/value

The role of surface corrugation parameters on the efficiency of free convection and heat transfer of thermal radiation within the porous media containing the T-inverted corrugated cavity including uniform heat source/sink under the impact of Lorentz forces has never been explored. A contrast is also established between a flat cavity and a corrugated one.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0961-5539

Keywords

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Article
Publication date: 14 July 2020

Mohamed Dhia Massoudi, Mohamed Bechir Ben Hamida and Mohammed A. Almeshaal

The purpose of this paper is to study the natural convection and radiation heat transfer inside Nonagon inclined cavity with variable heated source length, which contains…

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Abstract

Purpose

The purpose of this paper is to study the natural convection and radiation heat transfer inside Nonagon inclined cavity with variable heated source length, which contains a porous medium saturated with nanofluid in the presence of uniform heat generation or absorption under the effect of uniform magnetic field with variable direction. The shape factor of nano particles is taking account for the model of nanofluid.

Design/methodology/approach

This study is established in two-dimensional space. The 2D numerical study is effectuated with Comsol Multiphysics based on the on the finite element method. The 2D equation system is exposed on dimensionless form taking into account the boundary conditions.

Findings

Results obtained show that the convection heat transfer is ameliorated with the augmentation of heated source length. The convection heat transfer is enhanced by increasing Rayleigh, Darcy numbers and the heated source length; however, it is reduced by rising Hartmann number. The presence of radiation parameter lead to improve the convection heat transfer in the presence of both uniform heat generation/absorption. The average Nusselt number reaches a maximum for an inclination of cavity γ = 45° and a minimum for γ = 60°. Both the increase of the shape factor of nano particles and the solid fraction of nano particles improve the convection heat transfer.

Originality/value

Different studies have been realized to study the heat transfer inside cavity contains porous medium saturated with nanofluid under magnetic field effect. In this work, the Nonagon geometric of cavity studied has never been studied. In addition, the effect of radiation parameter with relation of the shape factor of nanoparticles in the presence of uniform heat generation/absorption on the heat transfer performance have never been investigated. Also, the effect of magnetic field direction with relation of the inclination cavity on heat transfer performance.

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Article
Publication date: 6 August 2019

Rawya Ben Jaballah, Mohamed Bechir Ben Hamida, Jehad Saleh and Mohammed A. Almeshaal

The purpose of this paper is to investigate the enhancement of the performance of bubble absorber using hybrid nanofluid as a cooled NH3/H2O absorption system to reduce…

Abstract

Purpose

The purpose of this paper is to investigate the enhancement of the performance of bubble absorber using hybrid nanofluid as a cooled NH3/H2O absorption system to reduce their size and to find the best fitting model. A numerical model for ammonia-water bubble absorber was developed to show the influence of operating conditions and design parameters on the absorber performance.

Design/methodology/approach

A finite difference numerical method is used to solve the numerical model. The model is subjected to the inlet conditions of liquid, vapor and coolant flow regimes. The absorber modeling was divided into small elements along the absorber length.

Findings

The model proposed is validated with previously published works. Then agreement between the both is considered as good.

Research limitations/implications

Numerical results/The use of hybrid nanofluids.

Originality/value

The results showed that the hybrid nanofluid is the best cooling medium. Very high heat transfer rates are obtained because of the high thermal conductivity and specific heat of hybrid nanofluid, and consequently, the absorber size decreases. It was also found that the absorber thermal load and the mass absorption flux increase with increasing of solid volume fraction. Also, the existence of an optimal absorber length was revealed, required for complete absorption when using hybrid nanofluid as a cooling medium. It is recommended that using hybrid nanofluid to remove the heat from the absorber is the best candidate for NH3/H2O absorption performance enhancement.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 29 no. 10
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 13 June 2019

Sana Ben Salah and Mohamed Bechir Ben Hamida

The purpose of this paper is to optimize the configuration of a heat sink with phase change material for improving the cooling performance of light emitting diodes (LED).

Abstract

Purpose

The purpose of this paper is to optimize the configuration of a heat sink with phase change material for improving the cooling performance of light emitting diodes (LED).

Design/methodology/approach

A numerical three-dimensional time-dependent model is developed with COMSOL Multiphysics to simulate the phase change material melting process during both the charging and discharging period.

Findings

The model is validated with previously published works. It found a good agreement. The difference between filled cavities with phase change materials (PCM) and alternate cavities air-PCM is discussed. The last-mentioned showed a good ability for reducing the junction temperature during the melting time. Three cases of this configuration having the same total volume of PCM but a different number of cavities are compared. The case of ten fins with five PCM cavities is preferred because it permit a reduction of 21 per cent of the junction temperature with an enhancement ratio of 2:4. The performance of this case under different power input is verified.

Originality/value

The use of alternate air-PCM cavities of the heat sink. The use of PCM in LED to delay the peak temperature in the case of thermal shock (for example, damage of fan) An amount of energy is stored in the LED and it is evacuated to the ambient of the accommodation by the cycle of charging and discharging established (1,765 Joule stored and released each 13 min with 1 LED chip of 5 W).

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 29 no. 11
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 11 July 2016

Mehmet Balcilar, Gozde Cerci and Riza Demirer

The purpose of this paper is to examine the international diversification benefits of Islamic bonds (Sukuk) for equity investors in conventional stock markets. The authors…

Abstract

Purpose

The purpose of this paper is to examine the international diversification benefits of Islamic bonds (Sukuk) for equity investors in conventional stock markets. The authors compare the diversification benefits of these securities with their conventional alternatives from advanced and emerging markets. Compared to conventional bonds, Sukuk are backed by tangible assets and carry both bond and stock-like features. Furthermore, the Sharia-based limitations limit the risk in these securities as a result of ethical investing rules. The regime-based model provides insight to possible segmentation (or integration) of these securities from global markets during different market states.

Design/methodology/approach

Risk spillover effects across conventional and Islamic stock and bond markets are examined using a Markov regime-switching GARCH model with dynamic conditional correlations (MS-DCC-GARCH). Weekly return series for conventional (advanced and emerging) and Islamic stock and bond indices are examined within a regime-dependent specification that takes into account low, high, and extreme volatility states. The DCC are then used to establish alternative diversified portfolios formed by supplementing conventional and Islamic equities with conventional and Islamic bonds one at a time.

Findings

Asymmetric shocks are observed from conventional stocks and bonds into Islamic bonds (Sukuk). Compared to emerging market bonds, Sukuk are found to display a different pattern in the transmission of global market shocks. The analysis of dynamic correlations suggests a low degree of association between Islamic bonds and global stock markets with episodes of negative correlations observed, particularly during market crisis periods. Portfolio performance analysis suggests that Islamic bonds provide valuable diversification benefits that are not possible to obtain from conventional bonds.

Originality/value

This study provides comprehensive analysis of volatility interactions and dynamic correlations across Islamic and conventional markets within a regime-based framework and provides insight to whether these securities could serve as safe havens or diversifiers for global investors. The findings have significant implications for global diversification strategies, particularly during market crisis periods.

Details

Managerial Finance, vol. 42 no. 7
Type: Research Article
ISSN: 0307-4358

Keywords

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