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Featured researches published by S.C.L. Koh.


International Journal of Production Research | 2004

Critical elements for a successful enterprise resource planning implementation in small-and medium-sized enterprises

T. C. Loh; S.C.L. Koh

The body of research relating to the implementation of enterprise resource planning (ERP) systems in small- and medium-sized enterprises (SMEs) has been increasing rapidly over the last few years. It is important, particularly for SMEs, to recognize the elements for a successful ERP implementation in their environments. This research aims to examine the critical elements that constitute a successful ERP implementation in SMEs. The objective is to identify the constituents within the critical elements. A comprehensive literature review and interviews with eight SMEs in the UK were carried out. The results serve as the basic input into the formation of the critical elements and their constituents. Three main critical elements are formed: critical success factors, critical people and critical uncertainties. Within each critical element, the related constituents are identified. Using the process theory approach, the constituents within each critical element are linked to their specific phase(s) of ERP implementation. Ten constituents for critical success factors were found, nine constituents for critical people and 21 constituents for critical uncertainties. The research suggests that a successful ERP implementation often requires the identification and management of the critical elements and their constituents at each phase of implementation. The results are constructed as a reference framework that aims to provide researchers and practitioners with indicators and guidelines to improve the success rate of ERP implementation in SMEs.


Energy and Environmental Science | 2016

Integrated hybrid life cycle assessment and supply chain environmental profile evaluations of lead-based (lead zirconate titanate) versus lead-free (potassium sodium niobate) piezoelectric ceramics

Taofeeq Ibn-Mohammed; S.C.L. Koh; Ian M. Reaney; Adolf Acquaye; D. Wang; Simon Taylor; Andrea Genovese

The increasing awareness of the environmental and health threats of lead as well as environmental legislation, both in the EU and around the world targeted at decreasing the use of hazardous substances in electrical appliances and products has reinvigorated the race to develop lead-free alternatives to lead zirconate titanate (PZT), which presently dominates the market for piezoelectric materials. Emphasis has been placed on one of the most likely piezoelectric materials, potassium sodium niobate (KNN), as a lead-free replacement for PZT. KNN has been speculated to have better environmental credentials and is considered as a “greener” replacement to PZT. However, a comparative environmental impact assessment of the life cycle phases of KNN versus PZT piezoelectric materials has not been carried out. Such a life cycle assessment is crucial before any valid claims of “greenness” or environmental viability of one material over the other can be made and is the focus of this paper. Against this backdrop, a methodologically robust life cycle supply chain assessment based on integrated hybrid life cycle framework is undertaken within the context of the two piezoelectric materials. Results show that the presence of niobium in KNN constitutes far greater impact across all the 16 categories considered in comparison with PZT. The increased environmental impact of KNN occurs in the early stages of the LCA due to raw material extraction and processing. As a result, the environmental damage has already occurred before its use in piezoelectric applications during which it doesnt constitute any threat. As such, the use of the term “environmentally friendly” for the description of KNN should be avoided. Cost-benefit analysis of substituting PZT with KNN also indicates that the initial cost of conversion to KNN is greater, especially for energy usage during production. This environmental assessment has allowed us to define and address environmental health and safety as well as sustainability issues that are essential for future development of these materials. Overall, this work demonstrates insightful findings that can be garnered through the application of life cycle assessment and supply chain management to a strategic engineering question which allows industries and policy makers to make informed decisions regarding the environmental consequences of substitute materials, designs, fabrication processes and usage.


International Journal of Production Research | 2015

An application of hybrid life cycle assessment as a decision support framework for green supply chains

A. Lake; Adolf Acquaye; Andrea Genovese; Niraj Kumar; S.C.L. Koh

In an effort to achieve sustainable operations, green supply chain management has become an important area for firms to concentrate on due to its inherent involvement with all the processes that provide foundations to successful business. Modelling methodologies of product supply chain environmental assessment are usually guided by the principles of life cycle assessment (LCA). However, a review of the extant literature suggests that LCA techniques suffer from a wide range of limitations that prevent a wider application in real-world contexts; hence, they need to be incorporated within decision support frameworks to aid environmental sustainability strategies. Thus, this paper contributes in understanding and overcoming the dichotomy between LCA model development and the emerging practical implementation to inform carbon emissions mitigation strategies within supply chains. Therefore, the paper provides both theoretical insights and a practical application to inform the process of adopting a decision support framework based on a LCA methodology in a real-world scenario. The supply chain of a product from the steel industry is considered to evaluate its environmental impact and carbon ‘hotspots’. The study helps understanding how operational strategies geared towards environmental sustainability can be informed using knowledge and information generated from supply chain environmental assessments, and for highlighting inherent challenges in this process.


Scientific Reports | 2016

Drivers of U.S. toxicological footprints trajectory 1998–2013

S.C.L. Koh; Taofeeq Ibn-Mohammed; Adolf Acquaye; Kuishuang Feng; Ian M. Reaney; Klaus Hubacek; Hidemichi Fujii; Khaled Khatab

By exploiting data from the Toxic Release Inventory of the United States, we have established that the toxicological footprint (TF) increased by 3.3% (88.4 Mt) between 1998 and 1999 and decreased by 39% (1088.5 Mt) between 1999 and 2013. From 1999 to 2006, the decreasing TF was driven by improvements in emissions intensity (i.e. gains in production efficiency) through toxic chemical management options: cleaner production; end of pipe treatment; transfer for further waste management; and production scale. In particular, the mining sector reduced its TF through outsourcing processes. Between 2006 and 2009, decreasing TF was due to decrease in consumption volume triggered by economic recession. Since 2009, the economic recovery increased TF, overwhelming the influence of improved emissions intensity through population growth, consumption and production structures. Accordingly, attaining a less-toxic economy and environment will be influenced by a combination of gains in production efficiency through improvement in emissions mitigation technologies and changes in consumption patterns. Overall, the current analysis highlights the structural dynamics of toxic chemical release and would inform future formulation of effective mitigation standards and management protocols towards the detoxification of the environment.


International Journal of Operations & Production Management | 2016

Integrated resource efficiency: measurement and management

S.C.L. Koh; Jonathan Morris; Seyed Mohammad Ebrahimi; Raymond Obayi

Purpose n n n n nDrawing on the systems theory and the natural resource-based view, the purpose of this paper is to advance an integrated resource efficiency view (IREV) and derive a composite “integrated resource efficiency index” (IRE-index) for assessing the environmental, economic, and social resource efficiencies of production economies. n n n n nDesign/methodology/approach n n n n nUsing sub-national input-output data, the IRE-index builds on the human development index (HDI) and the OECD green growth indicators by including functions for environmental resource efficiency, energy, and material productivity. The study uses multiple regressions to examine and compare the IRE-index of 40 countries, including 34 OECD nations. The study further compares the IRE-index to similar composite indicators such as the human sustainable development index (HSDI) and the ecological footprint. n n n n nFindings n n n n nThe IRE-index reveals a discrepancy between social development and resource efficiency in many of the world’s wealthiest production economies. Findings also show that material productivity has been the key driver for observed improvements in IRE over time. The index is a robust macro-level methodology for assessing resource efficiency and sustainability, with implications for production operations in global supply chains. n n n n nOriginality/value n n n n nThe IREV and IRE-index both contribute towards advancing green supply chain management and sustainability, and country-level resource efficiency accounting and reporting. The IRE-index is a useful composite for capturing aggregate environmental, economic, and social resource efficiencies of production economies. The paper clearly outlines the managerial, academic, and policy implications of the IREV and resulting index.


International Journal of Operations & Production Management | 2017

Improving retail supply flexibility using buyer-supplier relational capabilities

Raymond Obayi; S.C.L. Koh; David Oglethorpe; Seyed Mohammad Ebrahimi

Purpose n n n n nThe purpose of this paper is to investigate the mediating role of three important relational capabilities – absorptive capacity (AC), transactive memory systems (TMS), and organisational interoperability (OI); on the flexibility of buyer-supplier relationships and performance in retail supply chains. Drawing on the relational view of strategic management, the impact of relational capabilities on two forms of supply chain flexibility is examined – configuration flexibility (CF) for switching suppliers with minimal penalties, and planning and control flexibility (PCF) for altering supply schedules, quality, and delivery lead-time. n n n n nDesign/methodology/approach n n n n nStrategic- and tactical-level managers from 211 retail stores in the UK were surveyed. The authors validated a measurement model with structural equation modelling and tested four hypotheses on the mediating role of relational capabilities on supply chain flexibility and retail performance, controlling for size, duration of relationship, and market segment. n n n n nFindings n n n n nResults showed that the three relational capabilities partially mediated the positive effect of CF and PCF on operational performance in big middle and niche retailers. Examining the interaction effect of the forms of flexibility on the relational capabilities and performance, the authors found positive interaction effects on TMS and OI but a non-significant effect on AC. n n n n nPractical implications n n n n nIn addition to providing novel theoretical insights on supply chain flexibility, the findings have practical implications for supplier selection and buyer-supplier relationship management. n n n n nOriginality/value n n n n nOverall, the study highlights the impacts of relational capabilities on adopted operational strategies such as flexibility, buyer-supplier relationships, and retail performance.


International Journal of Operations & Production Management | 2018

Structure-integration relationships in oil and gas supply chains

Seyed Mohammad Ebrahimi; S.C.L. Koh; Andrea Genovese; Niraj Kumar

Purpose n n n n nAlthough studies have demonstrated the importance of supply chain integration (SCI) strategies in improving firm performance, very little is understood about how the organizational structure (OS) of focal firms affects the successful implementation of SCI initiatives across supply chains (SCs). Taking into consideration the importance of the oil and gas (O&G) industry, as well as the impact of uncertainties on OS and strategy choices, it is important to understand how OS and SCI affect the operational performance of O&G SCs. The paper aims to discuss this issue. n n n n nDesign/methodology/approach n n n n nTaking a contingency approach and using a global sample of 181 O&G firms, this study examines the mediating role of internal, customer, and supplier integration on the relationship between three main dimensions of OS – the degree of centralization, formalization, and hierarchical relationships and operational performance, using structural equation modeling. n n n n nFindings n n n n nFindings reveal that OS dimensions negatively impact operational performance. Further testing for the mediation found that by increasing SCI, O&G SCs can mitigate the negative effect of high centralization, formalization, and hierarchical relationship on operational performance. n n n n nResearch limitations/implications n n n n nClassifying OS into “structuring” and “structural,” this research provides evidence on which of the two has a stronger negative impact on operational performance. This is significant since it may be difficult for O&G companies to restructure and reform their OS. n n n n nOriginality/value n n n n nThis study examines the impact of OS and SCI on improving the operational performance of the O&G SCs. Theoretical and practical contributions to the field of operations management and organizational studies are also discussed.


Local Government Studies | 2017

Energy policy under austerity localism: what role for local authorities?

Jonathan Morris; John Harrison; Andrea Genovese; Liam Goucher; S.C.L. Koh

ABSTRACT In the UK, local authorities (LAs) have been placed at the forefront of domestic energy-reduction strategies as the responsible actors for coordinating policy in this sector. Yet, there has been little research regarding the role of LAs in this policy agenda, and their abilities to bring together stakeholders in the successful design and implementation of strategies to reduce energy demands. The paper aims to fill this gap by highlighting the relevance and importance of the energy policy sphere to local government studies, building on the idea of resilient LAs within the context of tensions between the localism agenda and the actual implementation of energy efficiency polices. This is achieved through multiple rounds of semi-structured interviews with LA officers. Our findings reveal that LAs, operating under a localism agenda, lack the freedoms and resources from central government to meet the needs of multiple stakeholders, resorting to short-term policies.


International Journal of Production Economics | 2012

Cross-tier ripple and indirect effects of directives WEEE and RoHS on greening a supply chain

S.C.L. Koh; Angappa Gunasekaran; C.S. Tseng


International Journal of Production Economics | 2008

ERP II: The involvement, benefits and impediments of collaborative information sharing

S.C.L. Koh; Angappa Gunasekaran; D. Rajkumar

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D. Wang

University of Sheffield

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Niraj Kumar

University of Sheffield

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K.B. Mustapha

Nanyang Technological University

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Angappa Gunasekaran

University of Massachusetts Dartmouth

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