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Article
Publication date: 21 November 2018

Abdullah AlFaify, James Hughes and Keith Ridgway

The pulsed-laser powder bed fusion (PBF) process is an additive manufacturing technology that uses a laser with pulsed beam to melt metal powder. In this case, stainless steel…

699

Abstract

Purpose

The pulsed-laser powder bed fusion (PBF) process is an additive manufacturing technology that uses a laser with pulsed beam to melt metal powder. In this case, stainless steel SS316L alloy is used to produce complex components. To produce components with acceptable mechanical performance requires a comprehensive understanding of process parameters and their interactions. This study aims to understand the influence of process parameters on reducing porosity and increasing part density.

Design/methodology/approach

The response surface method (RSM) is used to investigate the impact of changing critical parameters on the density of parts manufactured. Parameters considered include: point distance, exposure time, hatching distance and layer thickness. Part density was used to identify the most statistically significant parameters, before each parameter was analysed individually.

Findings

A clear correlation between the number and shape of pores and the process parameters was identified. Point distance, exposure time and layer thickness were found to significantly affect part density. The interaction between these parameters also critically affected the development of porosity. Finally, a regression model was developed and verified experimentally and used to accurately predict part density.

Research limitations/implications

The study considered a range of selected parameters relevant to the SS316L alloy. These parameters need to be modified for other alloys according to their physical properties.

Originality/value

This study is believed to be the first systematic attempt to use RSM for the design of experiments (DOE) to investigate the effect of process parameters of the pulsed-laser PBF process on the density of the SS316L alloy components.

Details

Rapid Prototyping Journal, vol. 25 no. 1
Type: Research Article
ISSN: 1355-2546

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Article
Publication date: 1 January 1977

Adrian Ziderman

It is just over fifty years since the British government instigated the scheme that was to lead to the setting up of Government Training Centres (GTCs) shortly afterwards.

46

Abstract

It is just over fifty years since the British government instigated the scheme that was to lead to the setting up of Government Training Centres (GTCs) shortly afterwards.

Details

International Journal of Social Economics, vol. 4 no. 1
Type: Research Article
ISSN: 0306-8293

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Article
Publication date: 1 March 1975

James J. Hughes

Between 1963 and 1971 the number of places available at Government Training Centres (GTCs) increased by over 400 per cent, so that by 1971 there were 52 centres with 11,000 places…

23

Abstract

Between 1963 and 1971 the number of places available at Government Training Centres (GTCs) increased by over 400 per cent, so that by 1971 there were 52 centres with 11,000 places capable of retraining about 20,000 persons annually. Early in 1972 the Conservative Government announced plans for a further large expansion in the manpower training and retraining programme. The long term aim of that government was to provide retraining opportunities for about 100,000 annually, but as an interim measure it hoped to provide such opportunities for 60–70,000 people by 1975. The government intended that about half of these opportunities—i.e. 30,000—would be catered for by the GTCs, of which there would be 64 by 1975, with a total of 17,000 training places.

Details

International Journal of Social Economics, vol. 2 no. 3
Type: Research Article
ISSN: 0306-8293

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Article
Publication date: 1 March 1977

James J. Hughes

In recent years Adrian Ziderman has applied the tools of cost‐benefit analysis to the evaluation of government training and his latest paper analyses the regional location of…

83

Abstract

In recent years Adrian Ziderman has applied the tools of cost‐benefit analysis to the evaluation of government training and his latest paper analyses the regional location of Government Training Centres (GTCs). Although he is kind enough to suggest that his paper was stimulated by an earlier paper of my own, he has nevertheless been severe in his criticism of me. He claims that I eschew the cost‐benefit approach because I find it wanting. Furthermore, he argues that the alternative criteria that I suggest for evaluating the regional location of GTC capacity are seriously deficient and give rise to policy recommendations which must be “treated with caution”. Here I attempt to meet Ziderman's criticisms of my earlier paper and in passing I comment very briefly upon the paper by Nicholas Adnett which is also critical of the main policy implications of my analysis.

Details

International Journal of Social Economics, vol. 4 no. 3
Type: Research Article
ISSN: 0306-8293

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Article
Publication date: 1 March 1996

James J. Hughes, James Peoples and Richard Perlman

While there is a vast literature on the effect of unemployment insurance on unemployment duration, in almost all of these studies the replacement ratio is the key explanatory…

3613

Abstract

While there is a vast literature on the effect of unemployment insurance on unemployment duration, in almost all of these studies the replacement ratio is the key explanatory variable. Does not contest the almost universal findings that the higher the ratio of unemployment income to that of previous earnings, the longer is unemployment duration, but finds that when pre‐unemployment income itself is considered, duration is positively related to that income. Supports the positive view of the merits of unemployment insurance. While past studies emphasize the leisure aspect, unemployment insurance incorporates the ability to improve search through the use of unemployment insurance funds. This use of funds is particularly applicable to high income recipients.

Details

International Journal of Manpower, vol. 17 no. 2
Type: Research Article
ISSN: 0143-7720

Keywords

Available. Open Access. Open Access
Book part
Publication date: 26 November 2024

Noyale Colin and Kathryn Stamp

Abstract

Details

Dancing
Type: Book
ISBN: 978-1-83753-915-4

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Book part
Publication date: 5 April 2019

Marc Lenglet and Philippe Rozin

This chapter bridges two theoretical concerns: making sense of emancipatory processes within institutional work on the one hand and providing a more nuanced understanding of…

Abstract

This chapter bridges two theoretical concerns: making sense of emancipatory processes within institutional work on the one hand and providing a more nuanced understanding of actorhood on the other hand. The authors develop the notion of ‘institutional co-appropriation work’ to characterise an emancipatory process whereby an institutionalised actor in a subaltern position manages to emancipate by appropriating some founding features of the elites position. The authors build on a case study focussing on the ‘Everest brawl’, an altercation high up on the mountain that revealed a critical evolution of sherpa actorhood. The authors analyse the struggles in the Nepalese mountaineering industry and show how sherpa actorhood is currently being reconfigured by the action of a few individuals willing to be recognised for their climbing abilities, and not their role as porters. This case epitomises the emergence of two distinct phenomena, explaining the magnitude of the event: the emergence of an empowered ‘new sherpa’ revealing heterogeneity of sherpa actorhood, in contrast to the accepted representations and the institutional work blurring the underlying rules and institutionalised roles of the mountaineering industry in Nepal. The implications for institutional work literature are twofold. First, the study of emancipatory processes benefits from more nuanced cases, where the actor in the subaltern position does not simply try to remove the dominant actor. Second, the notion of ‘actor’ within this stream of literature should not be taken-for-granted as is often the case.

Details

Agents, Actors, Actorhood: Institutional Perspectives on the Nature of Agency, Action, and Authority
Type: Book
ISBN: 978-1-78756-081-9

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Article
Publication date: 1 February 1996

James J. Hughes

Discusses the recommendations of the Greenbury Committee on the remuneration of directors in public companies. Specifically comments on the following issues: the establishment…

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Abstract

Discusses the recommendations of the Greenbury Committee on the remuneration of directors in public companies. Specifically comments on the following issues: the establishment, membership and status of remuneration committees in public companies; the determination of remuneration policy for executive directors; the disclosure and approval of the details of remuneration policy; the length of service contracts and the determination of compensation when these are terminated. Suggests that progress in implementing them should be monitored, given the importance of the Greenbury proposals.

Details

International Journal of Manpower, vol. 17 no. 1
Type: Research Article
ISSN: 0143-7720

Keywords

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Book part
Publication date: 22 November 2012

Julie Emontspool and Dannie Kjeldgaard

Purpose – The purpose of this article is to investigate consumption discourses in contexts characterized by multiple cultures and intercultural contacts, as multicultural contacts…

Abstract

Purpose – The purpose of this article is to investigate consumption discourses in contexts characterized by multiple cultures and intercultural contacts, as multicultural contacts and multiple migrations challenge existing consumer acculturation models based on a dualistic process of acculturation. This chapter explores empirically the character of cultural reflexivity and its expression in consumers’ discourses. Given that nostalgia is one prominent dimension of the migration conceptualization, we seek to understand how the role of nostalgia changes in contexts where consumers are decreasingly territorially embedded agents.

Methodology – The study rests on in-depth analysis of migrant narratives from two research phases. While the first phase encompasses in-depth interviews, the second one combines interviews and observations to provide a depiction of intercultural contact within the micro cosmos of a multicultural apartment.

Findings – The findings of this chapter illustrate how migrants develop different nostalgic discourses, to either (re-)appropriate the Expatriate as defined by James (1999), or to appropriate global consumptionscapes through nostalgia for the routine.

Research implications – On the basis of these findings, the article discusses cultural reflexivity in terms of naturalization and cultivation narratives (Wilk, 1999), proposing shifts between reflexive and routinized consumption practices as basis for consumers’ cultural reflexivity.

Originality/value of chapter – The contribution of this chapter is firstly a contextualized and empirically grounded definition of cultural reflexivity. Secondly, it demonstrates that migrants’ consumption discourses revolve more around disruptions of routines than around acculturation processes. Thirdly, the chapter illustrates the use of nostalgia for emotional valorization of cultures beyond classical home cultural authenticity discourses.

Details

Research in Consumer Behavior
Type: Book
ISBN: 978-1-78190-022-2

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Book part
Publication date: 14 December 2023

Chuka Onwumechili and Unwana Samuel Akpan

This chapter examines changes in Nigerian family roles because of the gap that exists in communication between left-at-home footballers' wives and their absentee husbands who are…

Abstract

This chapter examines changes in Nigerian family roles because of the gap that exists in communication between left-at-home footballers' wives and their absentee husbands who are working at significant distances from their families' permanent residence. Based on a study of 12 football (i.e., soccer) players in the Nigeria Professional Football League (NPFL) and contextualized within the field of sport labor, the study adds knowledge about the impact of footballer migration on left-behind families. The interview data produced five major themes: long-distance marital communication, effects of a paternalistic family culture, extended family issues, effects of father's absence on children, and effects of loneliness and loss of intimacy on wives. The results demonstrate changing roles among the married couples and extended families who were investigated in this study, perhaps indicating what is happening among similar families in Nigeria. It is notable that although the demands of professional football create this impact on families, there is considerable cultural resistance to role changes, because these changes grant the women new and possibly unexpected roles and increased domestic power. Their husbands, despite being away from home, appear to resist these changes and struggle to assert traditional power from afar. In many cases, the women expertly maneuver around this struggle and, in cases where disagreements emerge, they often use effective strategies to resolve problems and maintain a united family.

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