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Article
Publication date: 15 July 2014

Christoph H. Glock and Mohamad Y. Jaber

– The purpose of the paper is to develop a mathematical model that describes group learning processes with and without worker turnover.

Abstract

Purpose

The purpose of the paper is to develop a mathematical model that describes group learning processes with and without worker turnover.

Design/methodology/approach

Based on an extensive literature review, fundamental characteristics of group learning processes are first identified and then incorporated into a group learning curve (GLC). The developed GLC is then validated by fitting to empirical data.

Findings

The results show that the behaviour of the developed model is in conformance with the characteristics identified in the literature. A comparison with two other learning curves that have frequently been discussed in the literature shows that the GLC developed in this paper is a good mathematical representation of group learning processes.

Practical implications

The model developed in this paper enables practitioners to predict performance improvement in groups.

Originality/value

The paper is one of the first to propose a mathematical formulation of a GLC.

Details

Journal of Modelling in Management, vol. 9 no. 2
Type: Research Article
ISSN: 1746-5664

Keywords

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Article
Publication date: 5 August 2014

Nouri Matar, Mohamad Y. Jaber and Cory Searcy

– The purpose of this paper is to present an original model for the production-recycling-reuse of plastic beverage bottles.

Abstract

Purpose

The purpose of this paper is to present an original model for the production-recycling-reuse of plastic beverage bottles.

Design/methodology/approach

It is assumed that discarded two-liter plastic polyethylene terephthalate (PET) bottles are collected from the market. The bottles are then sorted into non-contaminated and contaminated streams. The non-contaminated PET bottles are either remanufactured or used as regrind mixed with virgin PET to produce new bottles to satisfy varying demand. The contaminated bottles are either sold to industries using low-grade plastic or disposed of in a landfill. Numerical studies are used to illustrate the behaviour of the model, with an emphasis on exploring the reduction of total system cost and the amount of bottles going into a landfill.

Findings

Numerical analyses conducted on the model found that the amount of bottles collected had the largest influence on the outcome of the total system unit time cost. Alternative materials to PET are surveyed and used to demonstrate a significant reduction in the cost of landfill disposal due to their more rapid degradation in the landfill.

Research limitations/implications

Several areas for future work are highlighted. Potential modifications to the model could focus on accommodating bottles made of material other than plastic, incorporating the effects of learning on manual tasks, and on accommodating shortages or excess inventory.

Originality/value

The model incorporates several unique aspects, including accounting for the cost of land use and associated environmental damage through the calculation of a present value that is charged to the manufacturer.

Details

The International Journal of Logistics Management, vol. 25 no. 2
Type: Research Article
ISSN: 0957-4093

Keywords

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Article
Publication date: 2 November 2012

Christoph H. Glock, Mohamad Y. Jaber and Cory Searcy

The purpose of this paper is to present a mathematical model that illustrates the trade‐offs between sustainability, demand, costs, and profit in a supply chain with a…

Abstract

Purpose

The purpose of this paper is to present a mathematical model that illustrates the trade‐offs between sustainability, demand, costs, and profit in a supply chain with a single supplier and a single manufacturer.

Design/methodology/approach

It is assumed that a single product is produced and sold on a market where demand is sensitive to price and quality. Sustainability is treated as a quality attribute and is measured in terms of the levels of scrap and emissions generated in the supply chain. It is assumed that the emissions and scrap can be controlled by varying production rates or by investing in production processes. The impact of cooperative and non‐cooperative behaviour between the supplier and the manufacturer is explored. Numerical studies are used to illustrate the behaviour of the model.

Findings

The analysis shows that the supplier and the manufacturer can attract additional customers by controlling scrap and emissions. The behaviour of the supplier and the manufacturer are dictated by the decision criteria, such as changes in the level of sustainability, used by customers to evaluate the product. It is shown that the profit of the system is higher and that the level of quality is lower in the case of cooperation than in the case of non‐cooperation.

Research limitations/implications

Several areas for future work are highlighted. The study of alternative demand functions, linking sustainability to a monetary component, including additional players, and incorporating additional sustainability indicators all offer possibilities for extending the model.

Originality/value

There is an identified need for analytical models that consider sustainability in the supply chain. The results are especially important for companies operating in markets where customers perceive the sustainability of a product as a quality criterion.

Details

The International Journal of Logistics Management, vol. 23 no. 3
Type: Research Article
ISSN: 0957-4093

Keywords

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Article
Publication date: 29 November 2018

Amir Karbassi Yazdi, Mohamad Amin Kaviani, Amir Homayoun Sarfaraz, Leopoldo Eduardo Cárdenas-Barrón, Hui-Ming Wee and Sunil Tiwari

The purpose of this paper is to develop a multi-item economic production quantity (EPQ) strategy under grey environment and space constraint. Since the “demand” cannot be…

Abstract

Purpose

The purpose of this paper is to develop a multi-item economic production quantity (EPQ) strategy under grey environment and space constraint. Since the “demand” cannot be predicted with certainty, it is assumed that data behave under grey environment and compare the proposed inventory model with other studies using crisp or fuzzy environments.

Design/methodology/approach

This paper is to optimise the cycle time and total cost of the multi-item EPQ inventory model. For this purpose, the Lagrangian coefficient is used to solve the constrained optimisation problem. The grey relational analysis approach and grey data are applied in developing the EPQ inventory model.

Findings

The results are compared with the analysis using crisp and fuzzy data. Sensitivity analysis is done to illustrate the effect of parameter variations on the optimal solution. The results of the study demonstrate that crisp data outperform the other two data in all scales problems in terms of cycle time and cost; grey data perform better in all scales problems than fuzzy data.

Originality/value

The contribution of this research is the use of grey data in developing the EPQ inventory model with space constraint.

Details

Grey Systems: Theory and Application, vol. 9 no. 1
Type: Research Article
ISSN: 2043-9377

Keywords

Content available
Article
Publication date: 7 September 2020

Edgar Ramos, Steven Dien, Abel Gonzales, Melissa Chavez and Ben Hazen

The purpose of this paper is to review the literature on logistics and supply chain costs to provide an analysis of sources of publication, citations and authorship using…

Abstract

Purpose

The purpose of this paper is to review the literature on logistics and supply chain costs to provide an analysis of sources of publication, citations and authorship using bibliometric analysis techniques (VOSviewer and CitNetExplorer tools).

Design/methodology/approach

A review of 756 articles published during the period 2014 to 2019 referenced in the Scopus database was performed. The review was limited to articles published in English and directly related to logistics and supply chain costs.

Findings

The research identified more than 2,000 authors representing more than 5,000 keywords and 10,000 references from a total of 155 journals investigated. A critical synthesis of the resulting data revealed several insights about various aspects of studies in this field. For instance, the review identified a scarcity of academic publications in three key areas, namely “supply chain,” “optimization” and “transportation”, which are concepts focused on the total supply chain.

Originality/value

This research highlights important areas of attention for both researchers and practitioners considering costs associated with logistics and supply chain operations and strategies. The results can also help identify thematic areas, journals and topics for future research. The paper identifies and proposes research areas to contribute to the literature when challenges to investigating logistics and supply chain costs are discussed.

Details

Benchmarking: An International Journal, vol. 28 no. 3
Type: Research Article
ISSN: 1463-5771

Keywords

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Article
Publication date: 1 September 2006

Konstantinos D. Patlitzianas, Haris Doukas and John Psarras

To contribute to the design of the energy service companies (ESCOs)' environment in the Mediterranean countries, mainly focusing on the constraints this company's…

Abstract

Purpose

To contribute to the design of the energy service companies (ESCOs)' environment in the Mediterranean countries, mainly focusing on the constraints this company's environment face and the actions that can fulfil its needs and aims, taking also into consideration the opportunities and threats emerging from the energy liberalization and climate change.

Design/methodology/approach

The methodology that was followed (based in a large part on the context of two projects targeted to the Mediterranean region and funded by the European Commission) incorporated four steps, the desk analysis for energy efficiency potential in the Mediterranean, the data collection, the assessment of the constraints and the final assessment of the ESCOs' environment.

Findings

Provides information regarding the current status of ESCOs' development, in the dimensions of the ESCOs' environment (political/legal, economical/financial, social/cultural and technological), both in the European Union (EU) (Cyprus, France, Greece, Italy, Malta and Spain) and non‐EU (Algeria, Egypt, Israel, Jordan, Lebanon, Morocco, Syria, Tunisia and Turkey) Mediterranean countries.

Originality/value

There are no papers investigating the activation environment of ESCOs in a coherent and integrated way in the Mediterranean. This paper provides to decision makers a supportive framework for policy design and formulation of policy priorities for ESCOs development in the region.

Details

Management of Environmental Quality: An International Journal, vol. 17 no. 5
Type: Research Article
ISSN: 1477-7835

Keywords

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Article
Publication date: 16 November 2020

Nagwan Abdulwahab AlQershi, Sany Sanuri Mohd Mokhtar and Zakaria Bin Abas

This paper examines the interaction of human capital and CRM on the performance of SMEs in Yemen.

Abstract

Purpose

This paper examines the interaction of human capital and CRM on the performance of SMEs in Yemen.

Design/methodology/approach

The study used a quantitative approach in investigating the interacting effect of human capital on the relationship between CRM and SMEs' performance in Yemen. The PLS-SEM analysis was performed to test the hypotheses.

Findings

It was observed that key customer focus, technology-based CRM and CRM knowledge management were effective drivers of SME performance, but not CRM organization tools. It was also ascertained that human capital has no moderating effect on the key customer focus and knowledge management relationships with performance, although it does moderate the relationships between performance and CRM organization and technology-based CRM respectively.

Research limitations/implications

Because this study is limited to manufacturing SMEs in Yemen, the results cannot be generalized to other types of industry such as services, whose structure and vision differ from those of manufacturing SMEs. While the current results may be appropriate for SMEs in other developing countries, the researcher believes they are unsuitable for SMEs in advanced economies with different financial structures and employee and management cultures.

Practical implications

The empirical insights of this study are valuable for the owners, managers and professionals in the SMEs manufacturing sector in developing countries, to enrich their organizational performance through CRM adoption, while considering the moderating effect of human capital.

Originality/value

This is the first empirical work to confirm way the main drivers of human capital, including in the analysis the impact of CRM dimensions and SME performance, in the context of the manufacturing sector. In support of an original conceptual model, the insights contribute to the literature on CRM, SMEs in the manufacturing sector, human capital and emerging economies.

Details

Journal of Intellectual Capital, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1469-1930

Keywords

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Article
Publication date: 29 November 2018

Chetna Chauhan and Amol Singh

With rising environmental concerns, recent years have witnessed a significant surge of academic and corporate interest in green supply chain coordination (GSCC). This is…

Abstract

Purpose

With rising environmental concerns, recent years have witnessed a significant surge of academic and corporate interest in green supply chain coordination (GSCC). This is evident from the rise in channel coordination literature focused toward the elimination of sub-optimal in the green supply chain (GSC). This paper seeks to summarize the model-based research on coordination in GSCs with the help of a framework developed specifically for this paper. The purpose of this paper is to present an in-depth analysis of the widely used models in the area.

Design/methodology/approach

A review of literature is presented in this paper to examine the underlying concepts peculiar to GSCC. A classification framework is developed to present an exhaustive survey of commonly used concepts.

Findings

Around 90 percent of the papers on GSCC come from game theory (GT) application, which explicitly utilizes coordination through contracts. The review concludes prospective area of research in GSCC. The study posits that there exists a potential of creating a more rational and efficient coordination strategies to improve GSC’s operational performance, with the view of the optimum distribution of resources and better environmental management.

Originality/value

To the best of authors’ knowledge, this is the first state-of-the-art review of GSCC literature focused primarily on mathematical model-based literature. This review identifies various methodological and content-oriented characteristics of GSCC. The paper also opens avenues of future research.

Details

Benchmarking: An International Journal, vol. 25 no. 9
Type: Research Article
ISSN: 1463-5771

Keywords

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Article
Publication date: 1 March 2021

Mohammad Khalilzadeh, Peiman Ghasemi, Ahmadreza Afrasiabi and Hedieh Shakeri

The purpose of this study is to present a new failure mode and effects analysis (FMEA) approach based on fuzzy multi-criteria decision-making (MCDM) methods and…

Abstract

Purpose

The purpose of this study is to present a new failure mode and effects analysis (FMEA) approach based on fuzzy multi-criteria decision-making (MCDM) methods and multi-objective programming model for risk assessment in the planning phase of the oil and gas construction projects (OGCP) in Iran.

Design/methodology/approach

This research contains multiple steps. First, 19 major potential health and safety executive (HSE) risks in OGCP were classified into six categories with the Delphi method. These factors were distinguished by the review of project documentation, checklist analysis and consulting with experts. Then, using the fuzzy SWARA method, the authors calculated the weights of major HSE risks. Subsequently, FMEA and PROMETHEE approaches were used to identify the priority of main risk factors. Eventually, a binary multi-objective linear programming approach was developed to select the risk response strategies, and an augmented e-constraint method (AECM) was used.

Findings

Regarding the project triple well-known constraints of time, cost and quality, which organizations usually confront, the HSE risks of OGCP were identified and prioritized. Also, the appropriate risk response strategies were also suggested to the managers to be adopted regarding the situations.

Originality/value

The present research points at the HSE risks’ assessment integrating the fuzzy FMEA, step-wise weight assessment ratio analysis and PROMETHEE techniques with the AECM. Further to the authors’ knowledge, the quantitative assessment of the HSE risks of OGCP has not been done using the combination of the fuzzy FMEA, MCDM and AECMs.

Details

Journal of Modelling in Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1746-5664

Keywords

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Article
Publication date: 21 August 2017

Yen-Chun Jim Wu and Tienhua Wu

The purpose of this paper is to systematically review the literature on entrepreneurship education (EE) in the Asia Pacific spanning a ten-year publishing period. The…

Abstract

Purpose

The purpose of this paper is to systematically review the literature on entrepreneurship education (EE) in the Asia Pacific spanning a ten-year publishing period. The results of previous EE research are summarily analyzed and the key themes are critically addressed.

Design/methodology/approach

This paper presents a systematic literature review of EE articles published from 2007 to 2016 in peer-reviewed, English-speaking journals that are available on the Scopus database. Frequency, bibliometrical data, and research content of the literature review are analyzed.

Findings

Research in this area is experiencing a steady growth, and a small percentage of scholars or countries in the Asia Pacific are found to make significant contributions to a body of knowledge on EE. The findings also show that the majority of studies lack theoretical legitimacy on the definition of EE and its underpinning theories; however, some articles consider an institutional or contextual perspective on EE, present individual-centered pedagogy in a traditional educational context, or indicate the intertwined connections between EE initiatives and economic growth. Thus, the findings manifest EE research in the Asia Pacific as relatively limited across research agenda, viewpoints, and levels.

Research limitations/implications

Based on the discussion on key themes, a multi-faceted and multi-tier perspective and a longitudinal study are suggested to provide broader and deeper understanding of the complexities in EE provision and its role in the relationship with national entrepreneurship. Thus, the gap between Western/Asian research contexts and enabling a common evolving body of knowledge can be bridged.

Practical implications

This study provides valuable insights that can aid educators and policymakers to establish and improve EE design and operations. This study would benefit EE systems in countries of the Asia Pacific region and should improve their practical outcomes. The relevance of integrating functional, personality, and behavioral views into EE development seems difficult but is suitable for EE advancements, thereby boosting the acceptance of entrepreneurship in society and subsequently impacting the economic development of a country.

Originality/value

This study is the first literature review on EE research in the Asia Pacific; it provides a summary analysis of the current state of EE and future directions in theory and practice.

Details

Management Decision, vol. 55 no. 7
Type: Research Article
ISSN: 0025-1747

Keywords

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