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Article
Publication date: 1 September 2000

David Sherwin

Reviews overall models for maintenance management from the viewpoint of one who believes that improvements can be made by regarding maintenance as a “contributor to profits”…

10068

Abstract

Reviews overall models for maintenance management from the viewpoint of one who believes that improvements can be made by regarding maintenance as a “contributor to profits” rather than “a necessary evil”. The reasons why maintenance is such a “Cinderella function” are largely historical and can mostly be overcome by new information technology (IT) and its falling cost. Progress is now being held up by outdated notions of what is economically possible in data acquisition and analysis, and failure to revise basic maintenance and reliability concepts, some of which are now 30 years out‐of‐date. Integrated IT permits mathematical optimisation of supra‐departmental management decisions, e.g. co‐planning of production with maintenance, overhaul/renewal of machinery and improvement of product performance/quality. Life‐cycle profit (LCP) is a fair measure of overall effectiveness that emphasises the value rather than the cost of terotechnological activities.

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Journal of Quality in Maintenance Engineering, vol. 6 no. 3
Type: Research Article
ISSN: 1355-2511

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Article
Publication date: 1 September 1999

David J. Sherwin

Suggests new ways to construct and update preventive schedules for a complex system by making better use of system failure down time to do preventive work without further…

1063

Abstract

Suggests new ways to construct and update preventive schedules for a complex system by making better use of system failure down time to do preventive work without further productive loss. The methodology is based on age renewal but necessarily approximate. However, it includes the recursive effects of maintenance on system MTBF, and of opportunities insufficient to prevent system deterioration. Opportunity maintenance theoretically self‐adjusts; if insufficient opportunities arise, average lateness increases, and failures increase until a balance is achieved, but minimum conditions exist for a given age renewal schedule, and the natural balance may not be economically optimal.

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Journal of Quality in Maintenance Engineering, vol. 5 no. 3
Type: Research Article
ISSN: 1355-2511

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Article
Publication date: 1 September 1999

David J. Sherwin and Basim Al‐Najjar

Markov models find optimum inspection intervals for phased deterioration of monitored complex components in a system with severe down time costs. The number of (pseudo)‐phases can…

941

Abstract

Markov models find optimum inspection intervals for phased deterioration of monitored complex components in a system with severe down time costs. The number of (pseudo)‐phases can be increased, but in most cases, simple models tracking actual states and their perception by the user will suffice, because of paucity of data and near‐constant rates. The matrix is cyclic; it includes renewal and regression to earlier states, simplifying solution and matching observation. An example involves roller bearings in paper mills with three phases, no defect, possible defect, and final deterioration towards failure. In the last phase, continuous monitoring is used.

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Journal of Quality in Maintenance Engineering, vol. 5 no. 3
Type: Research Article
ISSN: 1355-2511

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Article
Publication date: 1 June 1997

David Sherwin

As the time to dispose of a system approaches, renewal of wearing components becomes progressively less attractive. The traditional optimization method for this situation is…

214

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As the time to dispose of a system approaches, renewal of wearing components becomes progressively less attractive. The traditional optimization method for this situation is through net present value and dynamic programming. Presents a much simpler solution for rapidly‐wearing components founded on finding the optimum number of equal renewal intervals. Unequal intervals increase expected failures for any fixed number of intervals, and it is argued that it is unnecessary to discount costs. The model can be used with either the Cox renewal function or the cumulative hazard function representing the expected number of failures between scheduled renewals of the component, the choice depending on whether the component is minimally repaired or renewed at these failures.

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Journal of Quality in Maintenance Engineering, vol. 3 no. 2
Type: Research Article
ISSN: 1355-2511

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Article
Publication date: 1 March 1995

David J. Sherwin and Patrik Jonsson

Modern production management systems are being increasinglycomputerized in the pursuit of higher quality, the faster development ofnew products and lower unit costs. But the…

2303

Abstract

Modern production management systems are being increasingly computerized in the pursuit of higher quality, the faster development of new products and lower unit costs. But the present generation of methods and software, e.g. JIT, MRP II, CIM, omit to integrate the maintenance function and do not properly consider plant availability and renewal. Considers how these can be included in the next CIM generation, the advantages and costs of doing so, and the quality and market‐share consequences of failure to do it. Total productive maintenance (TPM) and reliability‐centred maintenance (RCM) are considered inadequate in themselves, but each has features which can be used within an integrated management information system to implement TQM and optimize life cycle profit (LCP), provided that the need to collect and analyse failure, repair and maintenance data in respect of increasingly expensive plant is fully recognized.

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Journal of Quality in Maintenance Engineering, vol. 1 no. 1
Type: Research Article
ISSN: 1355-2511

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Article
Publication date: 1 March 1999

Peter Johnstone

In England and Wales the Crown Prosecutor is a lawyer who is independent from the investigation and is charged with assessing evidence and evaluating whether a prosecution should…

155

Abstract

In England and Wales the Crown Prosecutor is a lawyer who is independent from the investigation and is charged with assessing evidence and evaluating whether a prosecution should proceed or not. The CPS is intentionally authorised to override the decisions of the police to curb any potentially over‐zealous investigations and evidence gathering that might subsequently tarnish the standards of procedure in the courts when applying the criminal law. The increasingly burdensome rules of disclosure have made demands on the CPS which are akin to the overall requirement on the investigating magistrate of civil law jurisdictions to find the truth by examination of the prosecution and defence evidence. The recent moves to return a limited number of lawyers to police stations is a further indication that the future role of the CPS may include an active rather than solely passive role in evidence gathering. The Serious Fraud Office are directly involved in the investigation and prosecution of complex frauds. This office has statutory and judicial authority to conduct investigations which follow an inquisitorial rather than accusatorial model. The juge d'instruction in France has authority to direct and control police investigations and subsequently to compile a dossier of evidence for presentation before a trial court. This paper points out that there are close parallels emerging in pre‐trial procedures in England and Wales and in France and the criticisms of the role of the investigating magistrate, the ‘sick man’, may hold lessons to be learnt for investigators and prosecutors within this jurisdiction.

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Journal of Financial Crime, vol. 7 no. 1
Type: Research Article
ISSN: 1359-0790

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Article
Publication date: 1 October 2007

A.C. Venter

The high occurrence of procurement fraud requires the management of an enterprise, the risk manager of the enterprise and the internal auditor to address procurement fraud risks…

2519

Abstract

The high occurrence of procurement fraud requires the management of an enterprise, the risk manager of the enterprise and the internal auditor to address procurement fraud risks effectively within the enterprise risk management concept. The purpose of the article is to explain a procurement fraud risk management process which will serve as a comprehensive framework for enterprise risk managers and for internal auditors to limit the enterprise’s exposure to procurement fraud as far as possible. The study by Venter (2005) on which the article is based proposes a procurement fraud risk matrix which can be used to manage fraud risks within the procurement function efficiently. This matrix is based on the Committee of Supporting Organizations of the Treadway Commission’s (COSO’s) Enterprise Risk Management ‐Integrated Framework which is specifically applied to address the procurement fraud risk problem.

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Meditari Accountancy Research, vol. 15 no. 2
Type: Research Article
ISSN: 1022-2529

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Book part
Publication date: 11 October 2019

David Beer

Abstract

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The Quirks of Digital Culture
Type: Book
ISBN: 978-1-78769-916-8

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Article
Publication date: 1 February 1989

William Copulsky

Considers cases of new product launches where market analysissuggests that the product will fail but when pushed through by anentrepreneur proves to be a commercial success…

189

Abstract

Considers cases of new product launches where market analysis suggests that the product will fail but when pushed through by an entrepreneur proves to be a commercial success. Describes the process of product introduction to fill unrecognized needs as Ready‐Fire‐Aim, since the market can only be appreciated after the launch. Concludes that product champions must be in a corporate culture that allows risk, and should be prepared to risk their job on a risky venture.

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Journal of Consumer Marketing, vol. 6 no. 2
Type: Research Article
ISSN: 0736-3761

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Book part
Publication date: 3 September 2019

Jeffrey Berman

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Mad Muse: The Mental Illness Memoir in a Writer's Life and Work
Type: Book
ISBN: 978-1-78973-810-0

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