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Article
Publication date: 5 March 2018

Mohamed A. Youssef and Eyad M. Youssef

The purpose of this paper is to examine the impact of integrating ISO 9000 and total quality management (TQM) on operational performance of manufacturing organizations and…

1778

Abstract

Purpose

The purpose of this paper is to examine the impact of integrating ISO 9000 and total quality management (TQM) on operational performance of manufacturing organizations and their journey toward achieving world-class manufacturing (WCM) status.

Design/methodology/approach

The authors used a conceptual model and its empirical validation based on a sample of 2,961 responses from one developing and three developed economies. Univariate and multivariate analyses were used to test five main hypotheses.

Findings

Plants that integrate ISO 9000 and TQM progressed faster toward achieving WCM status and have better operational performance in terms of quality management, inventory management, time-based performance, and competitiveness.

Research limitations/implications

The sample from the developing economy includes only 254 responses, while the one from the three developed economies includes 2,907 responses.

Practical implications

Findings of this study have many implications for both academic and practitioners. These findings encourage practitioners to consider ISO 9000 and TQM as complementary, not substitutes.

Social implications

Developing economies should follow the footsteps of developed economies in considering quality as a competitive advantage in global markets.

Originality/value

The paper addresses in a unique and unprecedented way the synergistic impact of ISO 9000 and TQM on operational performance. The study is the first in its kind to include responses from both developing and developed economies. The development of the synergy index was never addressed before.

Details

International Journal of Quality & Reliability Management, vol. 35 no. 3
Type: Research Article
ISSN: 0265-671X

Keywords

Article
Publication date: 1 May 2001

Zubair M. Mohamed, Mohamed A. Youssef and Faizul Huq

The performance of flexible manufacturing systems, (FMS) has been one of the major topics that has attracted the attention of production and operations management (POM…

2028

Abstract

The performance of flexible manufacturing systems, (FMS) has been one of the major topics that has attracted the attention of production and operations management (POM) researchers for the last two decades. In this paper we study the relationship between the degree of machine flexibility and the level of system performance. A machine loading and routing model is developed and used to investigate the effect of changing machine flexibility on the performance measures of an FMS. The measures used in this paper include makespan, routing flexibility, capacity flexibility, and inventory effects. The results indicate that changes in the machine flexibility affect some measures more than others. The results also show that, for a decrease of 24 per cent in the degree of machine flexibility, makespan increases by 17 per cent, routing flexibility decreases by as much as 13 per cent, and capacity flexibility decreases by as much as 38 per cent, and the inventory decreases by as much as 26 per cent. Furthermore, as the workload on the FMS increases, the differences in the performance between two FMSs (with different degrees of machine flexibility) increase.

Details

International Journal of Operations & Production Management, vol. 21 no. 5/6
Type: Research Article
ISSN: 0144-3577

Keywords

Article
Publication date: 1 March 1995

Mohamed Zairi and Mohamed A. Youssef

Provides two definitions of TQM which address TQM critical factors.Also examines a number of self‐assessment frameworks and explains therole they play in determining the…

3386

Abstract

Provides two definitions of TQM which address TQM critical factors. Also examines a number of self‐assessment frameworks and explains the role they play in determining the TQM critical factors.

Details

Benchmarking for Quality Management & Technology, vol. 2 no. 1
Type: Research Article
ISSN: 1351-3036

Keywords

Article
Publication date: 1 July 1994

Mohamed A. Youssef

Examines the impact of the intensity level of Just‐in‐time (JIT) onquality. The intensity level of JIT is operationalized as a function offour variables: the existence of…

1518

Abstract

Examines the impact of the intensity level of Just‐in‐time (JIT) on quality. The intensity level of JIT is operationalized as a function of four variables: the existence of JIT as a timebased technology; the utilization of JIT to a certain extent; the integration of JIT with other time‐based technologies such as Group Technology (GT), Design for Manufacturability (DFM) and Total Quality Management (TQM); and the percentage of facilities that has been converted to using JIT. The term “quality” in this study is a composite construct of product quality, manufacturing workmanship, design and engineering quality, and vendor quality. This study was based on empirical data collected from 165 manufacturing firms in three industry groups in the USA: industrial machinery equipment, electronic and electric machinery equipment, and transport equipment. The two digit Standard Industrial Classification Codes (SIC) for these industry groups are 35, 36 and 37 respectively. The analysis of the results suggests that statistically significant differences in quality exist among firms with different intensity levels of JIT. The study has many implications for both academicians and practitioners.

Details

International Journal of Quality & Reliability Management, vol. 11 no. 5
Type: Research Article
ISSN: 0265-671X

Keywords

Article
Publication date: 1 October 2006

Mohamed A. Youssef, Salem M. Al‐Ghamdi, James V. Koch and Tom Dolan

The main purpose of this study is to examine the impact of the country in which a manufacturing plant is located on its ability to achieve one or more of the ISO…

1788

Abstract

Purpose

The main purpose of this study is to examine the impact of the country in which a manufacturing plant is located on its ability to achieve one or more of the ISO certifications, and the extent to which six other quality management practices have been implemented. It also examines the impact of achieving world class manufacturing status (WCM) on product quality. Product quality was measured by finished‐product first‐pass yield, scrap and rework costs, and warranty costs as percentages of sales.

Design/methodology/approach

The analyses are based on empirical data collected from more than 2900 manufacturing plants in the USA Canada, and Mexico.

Findings

The results show that there are significant differences in the plants' efforts to achieve quality certifications. Significant differences were also found in the extent to which six other quality management techniques are implemented. More important, our results show that there are significant differences in product quality performance among plants with different levels of progress toward achieving WCM status.

Originality/value

The findings of this study have many implications for both academic and practitioners who are interested in studying the impact of ISO 9000 and Quality Management practices.

Details

International Journal of Quality & Reliability Management, vol. 23 no. 8
Type: Research Article
ISSN: 0265-671X

Keywords

Article
Publication date: 1 March 1996

Mohamed A. Youssef and Mohamed M. Mahmoud

Under production economies of scale, the trade‐off between production and transportation costs will create a tendency towards a decentralized decision‐making process…

771

Abstract

Under production economies of scale, the trade‐off between production and transportation costs will create a tendency towards a decentralized decision‐making process. First, reviews previous approaches suggested in the literature for solving the production‐ distribution problem. Then offers a non‐linear programming model of the transportation problem under production economies of scale to illustrate the computational complexity of the problem. Discusses and proves the convergence of the “tangent line approximation procedure”. Finally, introduces and solves a numerical example.

Details

International Journal of Operations & Production Management, vol. 16 no. 3
Type: Research Article
ISSN: 0144-3577

Keywords

Article
Publication date: 1 March 1996

Mohamed Zairi and Mohamed A. Youssef

Continues the series of book reviews begun in Benchmarking for Quality Management & Technology, Vol. 2 No. 1. Reviews two further publications on benchmarking. Outlines…

3133

Abstract

Continues the series of book reviews begun in Benchmarking for Quality Management & Technology, Vol. 2 No. 1. Reviews two further publications on benchmarking. Outlines their content and shows how they are valuable to both practitioners and academics.

Details

Benchmarking for Quality Management & Technology, vol. 3 no. 1
Type: Research Article
ISSN: 1351-3036

Keywords

Article
Publication date: 1 August 1995

Mohamed Zairi and Mohamed A. Youssef

Quick response to customer needs is an important dimension on whicha company may compete. However, quick response in and by itself does notachieve much of a competitive…

4767

Abstract

Quick response to customer needs is an important dimension on which a company may compete. However, quick response in and by itself does not achieve much of a competitive advantage unless timeliness is integrated with quality, flexibility and cost efficiency. Discusses the meaning and origins of the quality function deployment (QFD) technique, its reported benefits and problems, its relationship to continuous improvement programmes such as total quality management, statistical process control (SPC), concurrent engineering (CE), and benchmarking. Also examines several case studies of companies based in the UK, in their attempt to introduce QFD for new product development. Highlights reported benefits up to date and how QFD starts to challenge existing cultures of developing new products. Finally presents some guidelines on QFD implementation and lists all the critical factors reported to impinge most on its successful implementation.

Details

International Journal of Quality & Reliability Management, vol. 12 no. 6
Type: Research Article
ISSN: 0265-671X

Keywords

Article
Publication date: 1 June 1995

Mohamed A. Youssef and Mohamed Zairi

Compares and contrasts the findings of an empirical analysis of theTQM critical factors in different parts of the world. Indicates thatquality movement is on the rise…

2611

Abstract

Compares and contrasts the findings of an empirical analysis of the TQM critical factors in different parts of the world. Indicates that quality movement is on the rise worldwide. However, the emphasis on the TQM critical factors may vary from one region in the world to another.

Details

Benchmarking for Quality Management & Technology, vol. 2 no. 2
Type: Research Article
ISSN: 1351-3036

Keywords

Article
Publication date: 28 June 2013

Fatma Ali Mohamed and Rafaat Melad Mohareb

The purpose of this paper is to synthesise, characterise and find out properties of some new bifunctional dyes bis (monochlorotriazine) using tetrahydrobenzo[b]thiophene…

Abstract

Purpose

The purpose of this paper is to synthesise, characterise and find out properties of some new bifunctional dyes bis (monochlorotriazine) using tetrahydrobenzo[b]thiophene systems as the chromophoric moiety, bearing good colour strength, lightfastness, and other favourable properties.

Design/methodology/approach

The novel reactive dyes were prepared, containing bis monochlorotriazine as reactive groups. The dye is synthesised by diazotization and coupling reactions. Firstly the authors synthesised the ethyl 2‐amino 4,5,6,7‐tetrahydrobenzo[b]thiophen‐3‐carboxylate chromophoric moiety compound which in turn underwent diazotization and coupling then diazotized and coupled reaction with either 1‐amino‐8‐naphthol‐3,6‐disulphonic acid (H‐acid) and or 2‐amino‐8‐naphthol‐6‐sulphonic (γ acid) to give the monoazo dye intermediates compounds. The latter products reacted with 2,4,6‐trichloro‐1,3,5‐triazine in 1:1 molar ratio afforded, via nucleophilic displacement when subjected to condensation 2,4,6‐trichloro‐1,3,5‐triazine in 1:1 molar ratio afforded via nucleophilic displacement, which reacted with 1,4‐phenylenediamine in 2:1 molar ratio to give reaction with the 1,4‐phenylenediamine in 2:1 molar ratio, the bisazobifunctional bismonochlorotriazine reactive dyes.bisazo bifunctional bismonochlorotriazine reactive dyes thus yielding the new target reactive. The synthesised dyes were applied onto cotton fabric under the typical exhaust dyeing conditions and their dyeing properties were investigated.

Findings

The results assessed for dyeing indicate high quality dyeing properties However, the homobifunctional (bis MCT) dyes showed higher exhaustion and fixation values, colour yield and fastness properties.

Practical implications

The described method showed the synthesis of bis monochlorotriazines derived from the tetrahydrobenzo[b]thiophene derivative 3 followed by their application towards cotton fabric.

Social implications

Social implications are to prepare new reactive dyes having higher fastness and uses for dyeing cotton which is the commonest fabric use.

Originality/value

In this work, the novel reactive dyes derived from the tetrahydrobenzo[b]thiophene derivative 3 were synthesized and their structures were based on the analytical and spectral data. Such a group of compounds are considered to be excellent reactive dyes with different colour shades.

Details

Pigment & Resin Technology, vol. 42 no. 4
Type: Research Article
ISSN: 0369-9420

Keywords

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