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Article
Publication date: 16 April 2020

Berna Unver, Özgür Kabak, Y. Ilker Topcu, Armagan Altinisik and Ozcan Cavusoglu

In the automotive industry, the high process complexity becomes an important issue because of the increased number of product and process variants demanded by the…

Abstract

Purpose

In the automotive industry, the high process complexity becomes an important issue because of the increased number of product and process variants demanded by the customers. To avoid quality defects in assembly and losses in such a complex manufacturing environment, new predictive support systems are required. This study aims to develop a multiple attribute decision support system (DSS) for the prediction and quantification of the risk of failures on the workstations of a leading Turkish automotive manufacturing company.

Design/methodology/approach

Initially, the factors affecting the failures in workstations and the attributes to evaluate the factors are identified. Subsequently, the relations among the attributes are specified and priorities of them are calculated. Finally, the risk of failures is calculated and tested in a pilot study and validated with real production data.

Findings

To the best of authors’ knowledge, this is a unique study that computes the risk scores on the workstations via DSS. The DSS has various advantages for improvements of the manufacturing quality: the risk of failures can be detectable and comparable, the effect of changes in the design of new workstations can be observed. Stations that have medium or high complexity scores demonstrated strong correlation with failure rates. A sensitivity analysis is conducted to predict the effect of improvement actions on the riskiness of the workstations.

Originality/value

High level of production complexity becomes a crucial issue for companies that use various production processes. Considering this fact, it is a requirement for companies to observe and monitor the risk factors, especially in the assembly lines to be able to eliminate failures derived from complexity. Accordingly, to measure risk scores of the workstations in the assembly lines, a decision support for companies aids executives to manage the complexity level in a reliable and effective way. In this study, the authors develop such a DSS for TOFAS, a leading Turkish automotive company. The proposed DSS is verified and applied through a pilot study on a specific basic production unit. A sensitivity analysis is also conducted to see the effects of potential improvements on the risk scores. Additionally, the trend of risk scores for the stations can also give valuable information for tracing the changes in the time horizon. The proposed DSS also enables an opportunity for the executives in their decision of design processes of new production lines by allocating limited resources in an appropriate way based on the risk scores of possible workstations. The proposed DSS is the first and unique proactive failure prevention model developed in a Fiat Chrysler Automobiles (FCA) plant across the world. TOFAS executives also plan to introduce and enlarge the usage of the model to other FCA plants. It may also be possible to apply the model to other assembly lines in any sector. Another plan of the executives of TOFAS is developing a software, which manages each parameter, to constitute data to the DSS to run this system more instantly and effectively. Moreover, they can take integration actions of the software with world-class manufacturing problem management system that is currently in use in TOFAS.

Details

Journal of Enterprise Information Management, vol. 33 no. 5
Type: Research Article
ISSN: 1741-0398

Keywords

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Article
Publication date: 5 June 2019

Berk Kucukaltan and Y. Ilker Topcu

Fierce competition in the airline industry compels airline companies to offer various services. Yet, while companies strive to become preferable, customers confront…

Abstract

Purpose

Fierce competition in the airline industry compels airline companies to offer various services. Yet, while companies strive to become preferable, customers confront numerous airline selection indicators, and as such causes vagueness in human thinking that needs to be systematically and normatively resolved. Accordingly, the purpose of this paper is initially to establish a strategic decision model that incorporates key selection indicators, among hundreds of criteria, through a systematic approach. Subsequently, it also aims to investigate the relative importance of these indicators for passengers.

Design/methodology/approach

This research first utilises a comprehensive literature review to uncover key indicators used in airline selection. Afterwards, the outcome obtained from the first phase initiated the phase of determining the prioritisation of these key selection indicators, through the analytic hierarchy process (AHP) method, based on passengers’ judgments.

Findings

The outcome of structuring a strategic decision model reveals 32 key selection indicators to be mainly considered by passengers and these indicators are grouped under five dimensions in this paper. Then, the prioritisation results given by the AHP indicate that “price-related factors” and “customer satisfaction-related factors”, respectively, are more important dimensions for passengers while selecting the best airline company.

Originality/value

The proposed approach provides a novel way to identify and prioritise key airline selection indicators for different passengers, through using the AHP, as a response to the need of adopting a systematic and comprehensive manner with the inclusion of general industry norms. Within this scope, the established model and the prioritisation results can be used as a reference by both airline passengers during their decision-making processes and airline companies which aim for becoming more competitive.

Details

Journal of Enterprise Information Management, vol. 32 no. 4
Type: Research Article
ISSN: 1741-0398

Keywords

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Article
Publication date: 22 June 2010

Fethi Calisir, A. Elvan Bayraktaroğlu, Cigdem Altin Gumussoy, Y. İlker Topcu and Tezcan Mutlu

The purpose of this study is to determine the relative importance of the usability and functionality factors for online auction and shopping web sites from the perspective…

Abstract

Purpose

The purpose of this study is to determine the relative importance of the usability and functionality factors for online auction and shopping web sites from the perspective of young consumers.

Design/methodology/approach

The Analytical Network Process (ANP) was used to analyse the relative importance of the usability and functionality factors.

Findings

The findings show that customers of online auction and shopping web sites give higher priority to usability and usability factors than to functionality, with navigation and interaction being the factors of highest relative importance.

Practical implications

First, customers assign higher priority to usability factors. Thus, early in the design phase, designers should attach more importance to navigation‐ and interaction‐related aspects of their web sites. Second, designers of web sites should include basic and advanced search options to increase the number of the web site users.

Originality/value

The study is the first to examine the relative importance of the usability and functionality factors of online auction and shopping web sites. Furthermore, the study fills this gap by identifying the complex interrelationships between various features of usability and functionality, and their impact on each other, by examining two Turkish online‐auction and shopping web sites.

Details

Online Information Review, vol. 34 no. 3
Type: Research Article
ISSN: 1468-4527

Keywords

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Article
Publication date: 11 June 2013

Sezi Cevik Onar, Emel Aktas, Y. Ilker Topcu and Des Doran

Motivated by a lack of studies in graduate level supply chain education, this research aims to explore trends in supply chain‐related graduate programmes in Europe and to…

Abstract

Purpose

Motivated by a lack of studies in graduate level supply chain education, this research aims to explore trends in supply chain‐related graduate programmes in Europe and to propose a framework for designing such programmes.

Design/methodology/approach

The authors determine “knowledge” and “skills” areas applicable to supply chain management (SCM) education and analyse supply chain‐related graduate programmes published by the European Logistics Association in 2004. They revisit the same programmes in 2011 to determine the recent situation and the trends. The authors use cluster analysis to reveal the similarities and differences among these programmes.

Findings

The authors find two distinct clusters: focused and diversified. Focused programmes offer modules in knowledge and skills areas apart from SCM at a negligible level and place more emphasis on SCM in 2011 when compared to 2004. Diversified programmes show a similar increase in the emphasis on SCM with more variety in the knowledge and skills areas.

Research limitations/implications

The authors' findings are based on SCM programmes delivered in Europe and over two discrete time periods. Future research should seek to extend this analysis to other continents with larger samples and incorporate the industry perspective to determine the potential gap between what programmes offer and what industry requires.

Practical implications

SCM‐related graduate programmes continue to redefine themselves. Clustering predominantly serves the universities in re‐assessing and re‐engineering their programmes, helps prospective graduates in their selection process and assists managers in their recruitment practices.

Originality/value

This paper establishes a baseline for assessing SCM‐related graduate programmes with respect to the knowledge and skills they offer and introduces a framework that may serve as a starting point for the design and positioning of such programmes.

Details

Supply Chain Management: An International Journal, vol. 18 no. 4
Type: Research Article
ISSN: 1359-8546

Keywords

Abstract

Details

Supply Chain Management: An International Journal, vol. 18 no. 4
Type: Research Article
ISSN: 1359-8546

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Article
Publication date: 29 November 2018

Elina Karttunen

Research on purchasing managers and their skills requirements supports the training and education of purchasing professionals. This paper offers an in-depth analytical…

Abstract

Purpose

Research on purchasing managers and their skills requirements supports the training and education of purchasing professionals. This paper offers an in-depth analytical review of the purchasing skills reported in the supply chain management (SCM) literature. The purpose of this paper is to highlight the most important skills and factors that influence these skills.

Design/methodology/approach

This paper employs a systematic literature review methodology. Two databases, Scopus and Web of Science, are searched for relevant articles. The selected journal articles are used as sources to obtain a view not only on the relevant purchasing and supply management (P/SM) skills, but also on factors that emphasize certain P/SM skills. This paper also summarizes the ten skills ranked as most important (often described as the “top ten”) among the sample articles.

Findings

The paper highlights the essential skills for purchasing professionals, verified both by their frequent appearances in rankings and by citation frequency in the literature. Generic managerial skills, such as communication, cost analysis, teamwork, problem-solving, negotiation, influencing, and persuasion, as well as information technology skills, received the most attention in the literature and rankings of the “top ten” P/SM skills. This paper provides a refined categorization of purchasing skills, which have merged recently with other discussed skills, such as political and entrepreneurial ones, into this categorization. This paper identifies factors that affect purchasing managers’ skills requirements.

Originality/value

This paper presents a structured overview of 57 peer-reviewed articles from high-quality journals about purchasing skills. The review contributes to the purchasing skills literature by showing the most relevant skills and the factors that influence skills requirements. These factors also provide arenas for further research related to purchasing skills.

Details

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

Keywords

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Article
Publication date: 3 May 2016

Maryam Eslami and Eboshogwe Imomoh

Nowadays with the rapid growth of futures market, trust issues are increasing, especially, for individual traders because of the existing risks. However, to date there is…

Abstract

Purpose

Nowadays with the rapid growth of futures market, trust issues are increasing, especially, for individual traders because of the existing risks. However, to date there is no study that focuses on trust issues within online futures market and risks that threaten individual traders. This paper aims to understand trust issues in online futures market.

Design/methodology/approach

This study adopts an in-depth qualitative approach of online futures market in Malaysia through 30 interviews include senior managers, managers and individual traders who involve in futures online trading from three brokerage firms. Using agency theory, a new scale model, this study provides understanding on trust issues for traders in online futures market.

Findings

The paper provides empirical insights about trust issues that will occur as a result of information, risk and goal asymmetries between traders and brokers in online futures market. It suggests licensed and registered broker, platform familiarity, platform accessibility and usability, flexible contract size and leverage, providing segregated account and appropriate devices as key elements to overcome the mentioned asymmetries.

Originality/value

This is the first paper to investigate existing risk in online futures market and provide valuable implications for both traders and brokers to reduce the risk and increase the traders’ trust.

Details

Qualitative Research in Financial Markets, vol. 8 no. 2
Type: Research Article
ISSN: 1755-4179

Keywords

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Article
Publication date: 4 July 2018

Gopalakrishnan Narayanamurthy, Anand Gurumurthy and Roger Moser

Before initiating the implementation of change for transforming and improving an organization through lean thinking (LT), it has to first select a right value stream…

Abstract

Purpose

Before initiating the implementation of change for transforming and improving an organization through lean thinking (LT), it has to first select a right value stream. Several implementation studies have been documented in literature, but not many studies have addressed this issue of value stream selection. The purpose of this paper is to propose and empirically validate a framework for selecting a value stream to implement LT.

Design/methodology/approach

8A framework is proposed by reviewing the literature on LT implementation case studies. Single case study methodology has been adopted to validate the application of 8A framework for selecting a value stream in an Indian educational institute. Since multiple qualifiers are considered simultaneously, a multi-criteria decision-making approach has been employed for choosing the value stream.

Findings

Utility of the proposed 8A framework for value stream selection was confirmed through its successful application in an educational institute. Out of three alternatives in the case organization, the teaching alternative was chosen for further LT implementation based on the application of 8A framework. Qualitative cross-validation and sensitivity analysis also confirmed the robustness of the value stream selection made using the 8A framework.

Research limitations/implications

Framework proposed in this study comprehensively captures the important qualifiers that were overlooked by the widely adopted first tenet of LT. Future research can attempt to generalize the applicability of 8A framework in different contexts including manufacturing, healthcare, software development, etc. A further study can be carried out in two similar case organizations or in two value streams of the same case organization (say in two different plants) to compare the differences in the outcome of lean implementation when one chooses its value stream for LT implementation without the application of the proposed framework, while another chooses it by applying the 8A framework.

Practical implications

Through structured evaluation of the comprehensive set of qualifiers in 8A framework using a multi-criteria decision making model, an informed decision can be taken by the practitioners in selecting a value stream from the available alternatives before proceeding with the implementation of LT.

Originality/value

After questioning the existing procedure of value stream selection for LT implementation, this study is the first to propose and validate an 8A framework that overcomes the limitations of the existing procedure. Study is also unique in the choice of the case organization as not many research papers have documented implementation of LT from the context of educational institutes.

Details

Journal of Organizational Change Management, vol. 31 no. 5
Type: Research Article
ISSN: 0953-4814

Keywords

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Article
Publication date: 18 March 2014

N. Anand, G. Arulraj and C. Aravindhan

Development of Self Compacting Concrete (SCC) is considered as one of the most significant development in the construction industry due to its numerous inherited benefits…

Abstract

Development of Self Compacting Concrete (SCC) is considered as one of the most significant development in the construction industry due to its numerous inherited benefits. With the introduction of super-plasticizers and viscosity modifying agents, it is now possible to produce concrete with high fluidity, good cohesiveness which does not require external energy for compaction. The proper understanding of the effects of elevated temperatures on the properties of SCC is necessary to ensure the safety of buildings made with SCC during fire. During the present investigation, an attempt has been made to study the stress-strain behaviour of Normal Compacting Concrete (NCC) and Self Compacting Concrete at a temperature of 900°C. A significant reduction in the Ultimate compressive strength of SCC was observed during this study. The reduction was found to be more for SCC compared to Normal compacting concrete. The reduction in the compressive strength of SCC was found to be 81.5 % for M40 concrete when exposed to 900°C.

Details

Journal of Structural Fire Engineering, vol. 5 no. 1
Type: Research Article
ISSN: 2040-2317

Keywords

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