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1 – 10 of 184
Article
Publication date: 3 August 2021

Tarek Salama, Ahmad Salah and Osama Moselhi

The purpose of this paper is to present a new method for project tracking and control of integrated offsite and onsite activities in modular construction considering…

Abstract

Purpose

The purpose of this paper is to present a new method for project tracking and control of integrated offsite and onsite activities in modular construction considering practical characteristics associated with this type of construction.

Design/methodology/approach

The design embraces building information modelling and integrates last planner system (LPS), linear scheduling method (LSM) and critical chain project management (CCPM) to develop tracking and control procedures for modular construction projects. The developed method accounts for constraints of resources continuity and uncertainties associated with activity duration. Features of proposed method are illustrated in a case example for tracking and control of modular projects.

Findings

Comparison between developed schedule and Monte Carlo simulation showed that baseline duration generated from simulation exceeds that produced by developed method by 12% and 10% for schedules with 50% and 90% confidence level, respectively. These percentages decrease based on interventions of members of project team in the LPS sessions. The case example results indicate that project is delayed 5% and experienced cost overrun of 2.5%.

Originality/value

Developed method integrated LPS, LSM and CCPM while using metrics for reliability assessment of linear schedules, namely, critical percent plan complete (PPCcr) and buffer index (BI). PPCcr and BI measure percentage of plan completion for critical activities and buffer consumption, respectively. The developed method provides a systematic procedure for forecasting look-ahead schedules using forecasting correction factor Δt and a newly developed tracking and control procedure that uses PPCcr and BI. Quantitative cost analysis is also provided to forecast and monitor project costs to prove the robustness of proposed framework.

Details

Construction Innovation , vol. 21 no. 4
Type: Research Article
ISSN: 1471-4175

Keywords

Article
Publication date: 18 August 2022

Raja Wasim Ahmad, Walaa Al Khader, Raja Jayaraman, Khaled Salah, Jiju Antony and Vikas Swarnakar

The purpose of this research is to study and analyze the literature that integrates Lean Six Sigma (LSS) approach with blockchain technology in different sectors for…

Abstract

Purpose

The purpose of this research is to study and analyze the literature that integrates Lean Six Sigma (LSS) approach with blockchain technology in different sectors for improved quality management.

Design/methodology/approach

This study presents a scoping review on the application of integrated LSS and blockchain technology in the manufacturing and healthcare sector. Further, the authors examined existing blockchain-based solutions on a variety of dimensions, including application area, technical approach, methodology, application scenario, various blockchain platforms, purpose, and monitoring parameters. The authors study LSS approaches in detail, as well as the key benefits that blockchain technology can enable. Finally, the authors discuss significant research problems to be addressed in order to develop a highly efficient, resilient, and secure quality management framework using blockchain technology.

Findings

It has been observed that the adoption of blockchain technology for quality management and assurance is influenced by several factors such as transaction execution speed, throughput, latency. Also, prior blockchain-based solutions have neglected to leverage the benefits of LSS methodologies for effective quality management.

Originality/value

This is the first study to explores the influence of blockchain technology on quality management and assurance in manufacturing and healthcare industry. Furthermore, prior research has not examined how integrating the LSS methodology with blockchain technology can aid in the control of product quality management.

Details

The TQM Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1754-2731

Keywords

Article
Publication date: 16 March 2015

Ahmad Salah and Osama Moselhi

The purpose of this paper is to present a newly developed fuzzy-set based model for estimating, allocating, depleting, and managing contingency fund over the life cycle of…

1274

Abstract

Purpose

The purpose of this paper is to present a newly developed fuzzy-set based model for estimating, allocating, depleting, and managing contingency fund over the life cycle of construction projects.

Design/methodology/approach

Fuzzy set theory is utilized in the design and development of proposed contingency modelling framework to incorporate uncertainties associated with the development phases of construction projects. A set of developed indices, measures, and ratios are introduced to quantify and characterize these uncertainties. The developed framework is designed to incorporate expert opinion and provide user-system interaction.

Findings

The results obtained from the application of the developed framework on actual project case not only illustrate its accuracy, but also demonstrate its capabilities for contingency management over life cycle of construction projects. Unlike other methods, the framework provides project managers with structured method for contingency depletion utilizing a set of depletion curves and selection factors.

Originality/value

The novelty of the developed framework lies not only in its new developments for contingency estimating but also its modelling for contingency allocation and depletion. It is expected to be of direct value to industry professionals and academics interested in contingency management over the entire life cycle of construction projects. The proposed framework provides management functions and features beyond those generated through Monte Carlo simulation and even those developed using fuzzy set theory.

Details

Engineering, Construction and Architectural Management, vol. 22 no. 2
Type: Research Article
ISSN: 0969-9988

Keywords

Book part
Publication date: 5 October 2018

Nima Gerami Seresht, Rodolfo Lourenzutti, Ahmad Salah and Aminah Robinson Fayek

Due to the increasing size and complexity of construction projects, construction engineering and management involves the coordination of many complex and dynamic processes…

Abstract

Due to the increasing size and complexity of construction projects, construction engineering and management involves the coordination of many complex and dynamic processes and relies on the analysis of uncertain, imprecise and incomplete information, including subjective and linguistically expressed information. Various modelling and computing techniques have been used by construction researchers and applied to practical construction problems in order to overcome these challenges, including fuzzy hybrid techniques. Fuzzy hybrid techniques combine the human-like reasoning capabilities of fuzzy logic with the capabilities of other techniques, such as optimization, machine learning, multi-criteria decision-making (MCDM) and simulation, to capitalise on their strengths and overcome their limitations. Based on a review of construction literature, this chapter identifies the most common types of fuzzy hybrid techniques applied to construction problems and reviews selected papers in each category of fuzzy hybrid technique to illustrate their capabilities for addressing construction challenges. Finally, this chapter discusses areas for future development of fuzzy hybrid techniques that will increase their capabilities for solving construction-related problems. The contributions of this chapter are threefold: (1) the limitations of some standard techniques for solving construction problems are discussed, as are the ways that fuzzy methods have been hybridized with these techniques in order to address their limitations; (2) a review of existing applications of fuzzy hybrid techniques in construction is provided in order to illustrate the capabilities of these techniques for solving a variety of construction problems and (3) potential improvements in each category of fuzzy hybrid technique in construction are provided, as areas for future research.

Details

Fuzzy Hybrid Computing in Construction Engineering and Management
Type: Book
ISBN: 978-1-78743-868-2

Keywords

Content available
Book part
Publication date: 5 October 2018

Abstract

Details

Fuzzy Hybrid Computing in Construction Engineering and Management
Type: Book
ISBN: 978-1-78743-868-2

Article
Publication date: 28 May 2019

Omerah Yousuf and Roohie Naaz Mir

Internet of Things (IoT) is a challenging and promising system concept and requires new types of architectures and protocols compared to traditional networks. Security is…

1375

Abstract

Purpose

Internet of Things (IoT) is a challenging and promising system concept and requires new types of architectures and protocols compared to traditional networks. Security is an extremely critical issue for IoT that needs to be addressed efficiently. Heterogeneity being an inherent characteristic of IoT gives rise to many security issues that need to be addressed from the perspective of new architectures such as software defined networking, cryptographic algorithms, federated cloud and edge computing.

Design/methodology/approach

The paper analyzes the IoT security from three perspectives: three-layer security architecture, security issues at each layer and security countermeasures. The paper reviews the current state of the art, protocols and technologies used at each layer of security architecture. The paper focuses on various types of attacks that occur at each layer and provides the various approaches used to countermeasure such type of attacks.

Findings

The data exchanged between the different devices or applications in the IoT environment are quite sensitive; thus, the security aspect plays a key role and needs to be addressed efficiently. This indicates the urgent needs of developing general security policy and standards for IoT products. The efficient security architecture needs to be imposed but not at the cost of efficiency and scalability. The paper provides empirical insights about how the different security threats at each layer can be mitigated.

Originality/value

The paper fulfills the need of having an extensive and elaborated survey in the field of IoT security, along with suggesting the countermeasures to mitigate the threats occurring at each level of IoT protocol stack.

Details

Information & Computer Security, vol. 27 no. 2
Type: Research Article
ISSN: 2056-4961

Keywords

Article
Publication date: 28 February 2022

Shreya Sangal, Achint Nigam and Chitrakshi Bhutani

This study aims to identify the challenges in the healthcare industry as it adopts an omnichannel setup in an emerging economy context. Further, the study determines the…

Abstract

Purpose

This study aims to identify the challenges in the healthcare industry as it adopts an omnichannel setup in an emerging economy context. Further, the study determines the scope of blockchain in addressing these challenges.

Design/methodology/approach

The study uses a qualitative approach to understand the challenges in the omnichannel healthcare industry and know the scope of blockchain in building an omnichannel healthcare system. In the first stage, it did an in-depth analysis of the extant literature, followed by a Delphi study with 24 healthcare experts.

Findings

The study presents the current challenges in the omnichannel healthcare sector in an emerging economy. Further, it develops a novel conceptual framework for blockchain adoption in the omnichannel healthcare industry. The study also presents propositions that will help healthcare service providers enhance decision-making concerning the adoption of blockchain in the healthcare industry.

Research limitations/implications

The research results may lack generalizability due to the exploratory approach and emerging economies context. Theoretically, in this study, the authors extend the theory of swift trust and organization information processing theory in an omnichannel healthcare context.

Practical implications

The propositions provided in this paper can help healthcare managers make strategic decisions on the scope of adoption of blockchain for omnichannel healthcare.

Originality/value

This study explores the understudied area of challenges in omnichannel healthcare and the scope of blockchain for omnichannel healthcare in an emerging economy context.

Details

Aslib Journal of Information Management, vol. 74 no. 5
Type: Research Article
ISSN: 2050-3806

Keywords

Article
Publication date: 26 July 2021

Swagatika Sahoo, Arnab Mukherjee and Raju Halder

The rapid technological growth, changes in consumer demands, products’ built-in obsolescence, presence of more non-repairable parts, shorter lifespan, etc., lead to the…

Abstract

Purpose

The rapid technological growth, changes in consumer demands, products’ built-in obsolescence, presence of more non-repairable parts, shorter lifespan, etc., lead to the generation of e-waste at an unprecedented rate. Although a number of research proposals and business products to manage e-waste exist in the literature, they lack in many aspects such as incomplete coverage of product’s life cycle, access control, payment channels (in few cases), incentive mechanisms, scalability issues, and missing experimental validation. The purpose of this paper is to introduce a novel blockchain-based e-waste management system aiming to mitigate the above-mentioned downsides and limitations of the existing proposals.

Design/methodology/approach

This paper proposes a robust and reliable e-waste management system by leveraging the power of blockchain technology, which captures the complete life cycle of e-products commencing from their manufacturing as new products to their disposal as e-waste and their recycling back into raw materials.

Findings

While the use of blockchain technology increases accountability, transparency and trust in the system, the proposal overcomes various challenges and limitations of the existing systems by providing seamless interactions among various agencies.

Originality/value

This paper presents a prototype implementation of the system as a proof-of-concept using solidity on the Ethereum platform and this paper performs experimental evaluations to demonstrate its feasibility and effective performance in terms of execution gas cost and transaction throughput.

Details

International Journal of Web Information Systems, vol. 17 no. 5
Type: Research Article
ISSN: 1744-0084

Keywords

Article
Publication date: 7 April 2015

Muhammad Zahid and Zulkipli Ghazali

The purpose of this paper is to examine the implementation of corporate sustainability (CS) practice by Malaysian Real Estate Investment Trusts (REITs) and property listed…

2024

Abstract

Purpose

The purpose of this paper is to examine the implementation of corporate sustainability (CS) practice by Malaysian Real Estate Investment Trusts (REITs) and property listed companies, following the three dimensional (economic, environmental, and social) framework of CS.

Design/methodology/approach

A quantitative content analysis procedure was undertaken using 113 reports, including 23 REITs and 90 property companies. For the data collection company websites, annual reports, corporate social responsibility (CSR), and sustainability reports were employed. The global reporting initiative (GRI), reporting framework was used for data collection and recording. The content analysis examined the level of disclosures for three dimensions of sustainability, namely economic, social and environmental.

Findings

The content analysis indicates that the majority of companies among the sample have their social responsibility and sustainability strategies for the satisfaction of stakeholders and legitimizing firm practices. However, there are variations in their approaches and reporting processes. Among the three dimensions, environmental disclosures are on its least and social dimension has priority in the level of disclosures. Though the overall reporting is low, but having upward trends over time.

Research limitations/implications

This study has a limitation that it investigates the level of CS practices in REITs and property companies among Malaysian listed companies. The findings of the study are helpful for the government of Malaysia, practitioners, academia, researchers, banks, Bursa Malaysia, security commission and CEO’s of the listed companies to improve their organizational practices and reporting quality of CS.

Originality/value

There has been limited literature on CS practices among Malaysian REITs and property industry. The previous studies have only focused top companies or a single dimension of CS, while this study addressing all the three dimensions of sustainability. This is the first study addressing all the three dimensions (economic, environmental, and social) of CS after the 10th Malaysian Plan (2010-2015). The study using a large sample of REITs and property companies during 2011-2013. The study will significantly add value to CS practices in emerging economies like Malaysia.

Details

World Journal of Science, Technology and Sustainable Development, vol. 12 no. 2
Type: Research Article
ISSN: 2042-5945

Keywords

Article
Publication date: 14 November 2022

Elif Dursun, Yasemin Ulker and Yavuz Gunalay

All supply chains must address waste management since it is a crucial step toward a sustainable world. This article aims to analyze the potential of blockchain technology…

Abstract

Purpose

All supply chains must address waste management since it is a crucial step toward a sustainable world. This article aims to analyze the potential of blockchain technology in waste management by focusing on the textile sector, which is one of the polluting industries. The study's main objective is to realize businesses' waste management practices and sustainability initiatives and then to comprehend how practitioners perceive the implementation of blockchain technology to waste management.

Design/methodology/approach

The waste management procedures and actors' perceptions of blockchain technology are examined using a qualitative study approach that adopts an in-depth interview methodology. The collected data is analyzed by a qualitative analysis software (e.g. MAXQDA).

Findings

Findings of the study show that blockchain technology is still in its infancy and needs to be communicated to the actors of the sector. The technology has low potential due to the barriers it faces during the development phase. However, it is considered to be an important technological development for the textile sector stakeholders.

Originality/value

This study is important to notice at what stage the waste management practices and how to develop better with modern technologies like blockchain. Blockchain technology has essential potential for supply chains, but sustainability concerns are becoming a major issue to be solved. Waste management is therefore an important subject to be analyzed and provided with innovative solutions that will contribute to sustainability efforts. To the author's best knowledge, this is the first attempt to comprehend the potential of blockchain in the textile industry in terms of waste management.

Details

Management of Environmental Quality: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1477-7835

Keywords

1 – 10 of 184