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Article
Publication date: 1 September 1996

Neal K. Vail, Badrinarayan Balasubramanian, Joel W. Barlow and Harris L. Marcus

Reports that measurable amounts of polymer degradation occur during the fabrication of objects from polymer coated ceramic powders by selective laser sintering (SLS). Argues that…

2185

Abstract

Reports that measurable amounts of polymer degradation occur during the fabrication of objects from polymer coated ceramic powders by selective laser sintering (SLS). Argues that because the binder is important in achieving strong green parts that can be handled with minimal breakage during post‐processing operations, it is essential to minimize the extent of binder losses. As the first step towards understanding the mechanisms of binder degradation, this paper presents a thermal model of the physical system, noting that the agreement between theory and experiment are good. The model is used to help determine the most influential parameters affecting binder losses during fabrication from polymer coated powders. Predicts that adjustments to laser beam diameter, laser scanning distance and gaseous environment will strongly affect polymer binder degradation during processing. Further predicts correctly that polymer degradation during SLS processing is not sensitive to the inherent degradation kinetics of the polymer.

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Rapid Prototyping Journal, vol. 2 no. 3
Type: Research Article
ISSN: 1355-2546

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Book part
Publication date: 9 May 2024

Freda Gonot-Schoupinsky, Merv Neal and Jerome Carson

Abstract

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The Positive Psychology of Laughter and Humour
Type: Book
ISBN: 978-1-83753-835-5

Available. Content available
Book part
Publication date: 19 October 2023

Emma Beckett

Abstract

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Tattooing and the Gender Turn
Type: Book
ISBN: 978-1-80262-301-7

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Article
Publication date: 1 June 1995

Kamatchi Subramanian, Neal Vail, Joel Barlow and Harris Marcus

The selective laser sintering (SLS) process is used to prepare test bars from Al2O3/polymer binder powders. Finds that binder‐coated A12O3 particles formed bars that were…

3082

Abstract

The selective laser sintering (SLS) process is used to prepare test bars from Al2O3/polymer binder powders. Finds that binder‐coated A12O3 particles formed bars that were approximately twice as strong as could be formed from mixtures of alumina and polymer binder at the same binder level and processing conditions. In mixed systems, bar strengths increased nearly in proportion to increases in polymer binder content over the 20‐40 per cent volume binder range. Parts made in any particular laser scanning mode showed optimum values for strength and density as the laser energy density was systematically increased from 2‐8cal/cm2. Suggests that optima result from the counteracting influences of energy density on binder fusion and thermal degradation. The optimum energy density is mode or geometry sensitive and shifts to lower values as the laser scanning vector is reduced. Concludes that this behaviour is probably the result of the lower heat losses. Equivalently better utilization of laser energy is associated with the shorter scan vectors. Some of the SLS fabricated bars were infiltrated with colloidal alumina, fired to remove the binder, and sintered at 1,600°C to achieve alumina bars with 50 per cent relative densities, interconnected porosity, and strengths between 2 and 8MPa.

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Rapid Prototyping Journal, vol. 1 no. 2
Type: Research Article
ISSN: 1355-2546

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Article
Publication date: 20 March 2017

Jennifer Evyonne Simpson, Janet Bardsley, Sharif Haider, Kenneth Bayley, Gill Brown, Amanda Harrington-Vail and Ann Dale-Emberton

The purpose of this paper is to communicate the findings of an empirical research project based on a real world problem that involved the development of a continuous professional…

466

Abstract

Purpose

The purpose of this paper is to communicate the findings of an empirical research project based on a real world problem that involved the development of a continuous professional development (CPD) framework for a children’s integrated service workforce. In addition, to give attention to the notion that children’s integrated services have not necessarily been viewed from the perspective of conflict management and that this has meant ensuing conflicts that characterise such organisations are more often than not ignored.

Design/methodology/approach

A case study approach involving a mixed methodology consisting of semi-structured interviews for senior managers and service leads; a quantitative survey for frontline practitioners and focus groups for service users, carers and children.

Findings

Rather than the service being fully integrated, services were aligned, and this was reflected in the conflict between professional cultures, reinforcing an “us and them” culture. This culture had seemingly permeated all aspects of the organisation including the senior management team. It was also noted that certain systems and processes, as well as bureaucracy, within the service were seen as hindering integrated working and was in effect a catalyst for conflict.

Research limitations/implications

What has become evident during the course of this empirical study is the need to further explore the functioning of children’s integrated services using conflict management theories, tools and techniques so as to understand how best to manage conflict to an optimum where an environment of creativity and productiveness is created.

Practical implications

Therefore, when devising a CPD framework it can be argued that there is a need to address some of the types of conflict at the micro-frontline practitioner level of the organisation, as it is this level where there is opportunity through a variety of mechanisms, for example formal and non-formal learning, ring-fenced time, attendance at conferences, team away days and shadowing opportunities can be used to achieve a greater understanding of professional roles, improve working relationships and engage in the division of tasks in a fashion that will promote collaborative working.

Social implications

The extent to which a children’s integrated service can be the harbinger of a range of multi-faceted conflicts that include the jarring of professional cultures, task conflict, inter-personal incompatibilities and competing value bases cannot be underestimated. Therefore, when devising a CPD framework it can be argued that there is a need to address some of the types of conflict at the micro-frontline practitioner level of the organisation.

Originality/value

Through the application of conflict management theory it will be illustrated how conflict could be used to effectively steer children integrated services towards creativity and productivity through an organisational wide framework that not only embraces dissonance, but also promotes a learning environment that takes advantage of such dissonance to incorporate a hybrid of professional practice and expertise.

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Journal of Children's Services, vol. 12 no. 1
Type: Research Article
ISSN: 1746-6660

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Available. Open Access. Open Access
Article
Publication date: 2 April 2024

Xuan V. Tran, Kaleigh McCullough, Makayla Blankenship, Trista Barton, Sophia Cohen, Tabitha Harris, Andrea Lopez, Summer Simone and Trace Bolger

This study aims to create actionable guidelines for pricing decision-making by employing game a theory matrix to forecast the correlation between the average daily rate and the…

544

Abstract

Purpose

This study aims to create actionable guidelines for pricing decision-making by employing game a theory matrix to forecast the correlation between the average daily rate and the latest ambiance of hotels.

Design/methodology/approach

Utilizing a vector error correction model, the research employs game theory to assess the influence of the average daily rate on the hotel's newest atmosphere during both peak season (April–September) and valley season (October–March).

Findings

Findings indicate that during the peak season, when the average daily rate rises in resorts and falls in suburban areas, the hotel’s newest atmosphere is at its best in both types of accommodations. During the off-peak season, the hotel’s newest atmosphere is achieved when both resorts and suburban accommodations increase their average daily rates.

Research limitations/implications

There are two study constraints. One is the assumption that hotel guests in both parties prefer not to change hotels, but in fact they would. Two is a limited sample of two resort and suburban markets.

Practical implications

This suggests that the hotel’s newest atmosphere can draw both leisure and business travelers to suburban areas during the low season and more leisure travelers to resorts during the high season.

Social implications

The study’s findings have implications for revenue related to the hotel’s newest atmosphere and cleanliness for both suburban and resort hotels, particularly when promoting tourism collaboratively.

Originality/value

The study provides valuable insights for hotel managers in analyzing pricing strategies using matrices.

Details

International Hospitality Review, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2516-8142

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Article
Publication date: 1 September 1995

Niall Waters‐Fuller

Identifies three schools of thought within the broad just‐in‐time(JIT) sourcing literature which are labelled as the“advocate”, “pragmatic” and“sceptic” schools. The former group…

9992

Abstract

Identifies three schools of thought within the broad just‐in‐time (JIT) sourcing literature which are labelled as the “advocate”, “pragmatic” and “sceptic” schools. The former group advocate JIT sourcing as a major competitive weapon, while the latter group suggest that it is less efficient than traditional sourcing techniques. The pragmatic group cite some of the problems associated with sourcing on a JIT basis. The major JIT sourcing practices are identified and the contributions from each school of thought critically reviewed. Reviews the benefits and problems of JIT sourcing as well as the movement of power and responsibilities between members of the supply chain. Concludes by suggesting avenues of future research within JIT sourcing.

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International Journal of Operations & Production Management, vol. 15 no. 9
Type: Research Article
ISSN: 0144-3577

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Article
Publication date: 1 May 1980

Yoram P. Wind and Robert J. Thomas

Highlights some of the major conceptual and methodological issues involved in organisational buying behaviour. Aims to avoid pitfalls involved in the utilisation of research…

3263

Abstract

Highlights some of the major conceptual and methodological issues involved in organisational buying behaviour. Aims to avoid pitfalls involved in the utilisation of research regarding specified issues — at the same time stimulating research aimed at the resolution of these issues. Reviews the current status of organisational buying behaviour, follows this by identifying five potential groups of users of information on organisational buying behaviour. Goes on to focus on the conceptual and methodological issues involved in organisational buying research. Suggests new research directions which, if implemented, could help advance the relevance and quality of organisational buying research. States that academic studies, directly concerned with a better understanding of organisational buying behaviour can be classified as falling into one of three areas the: buying centre (least studied area); organisational buying centre and process; or factors affecting the organisational buying centre and process. Purports that these three concepts can provide the basis for organising much of the diverse research efforts in organisational buying behaviour and goes on to illustrate findings from each of these areas and discusses them in depth.

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European Journal of Marketing, vol. 14 no. 5/6
Type: Research Article
ISSN: 0309-0566

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Article
Publication date: 1 December 2005

Manfred Weiss

Employee involvement in management’s decision making has been a challenge for the European Community (EC) since its beginning. Already in view of the six founding countries the…

2100

Abstract

Employee involvement in management’s decision making has been a challenge for the European Community (EC) since its beginning. Already in view of the six founding countries the European Economic Community (EEC) was confronted with a significant degree of diversity between the different Member States. This diversity increased with every enlargement, in particular when in 1973 the United Kingdom (UK) and Ireland became members and much later in 2004 when Central and Eastern European (CEE) States together with Malta and Cyprus were included. This diversity in the area of employee involvement in management’s decision‐making is well documented. Therefore, it may be sufficient for the purpose of this paper to only give some broad indications. There are countries, as for example Germany, Austria, the Netherlands or Luxembourg, which have systems with a dual structure where employee involvement in management’s decision‐making institutionally is separated from the trade unions, even if in actual practice the links between the two are significant. In other countries employee involvement is based on two pillars: both the trade unions and a body elected by all em ployees. This is the case in France, Greece, Portugal and Spain. In the Scandinavian countries employee in volvement is exclusively in the hands of the trade unions. In countries like Ireland and the U.K. employee involvement for a long time was more or less a taboo subject for the trade unions. The fear of being compromised in opposing measures through their industrial strength prevented them becoming integrated into the mechanism of decision‐making in companies. Only recently ‐ mainly due to the EU input ‐ this attitude is changing gradually. Italy has developed an interesting mixture of its own. Even if it may be possible ‐ as just indicated ‐ to discover or gani ‐ sational similarities between the systems of different countries, the still remaining differences should not be overlooked. It has to be added that in some countries employee involvement in manage ment’s deci sion‐making is exclusively based on legislation (as for example in Germany), in others exclusively on collective agreements (as for example in Scandinavia) and again in others on a mixture of both (as for example in Belgium). The subject matters for employee involvement are as different as the degree of participation, ranging from mere information to co‐determination. And only some countries know employee involvement in company boards whose systems again differ significantly from each other. In short, there is a wide spectrum of patterns of employee involvement in management’s decision‐making and some countries where such involvement is virtually unknown.

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Managerial Law, vol. 47 no. 6
Type: Research Article
ISSN: 0309-0558

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Article
Publication date: 1 January 1984

Linda A. Catelli

Physical education, like most areas of education, is changing and taking on a new look for the 1980s. Physical educators, school administrators, and others making decisions about…

450

Abstract

Physical education, like most areas of education, is changing and taking on a new look for the 1980s. Physical educators, school administrators, and others making decisions about programs for children and young people are examining both current practices and forecasts for the future in this field. What they decide will profoundly affect the resources that should be a part of library collections for children and youth. Too often librarians and school media specialists have found it difficult to think about the kinds of materials appropriate for such collections because they do not have the knowledge necessary for sound selection. A major reason for this difficulty is that the area of physical education is usually separated from other subject areas in schools. Along with the industrial arts, domestic science, and the fine arts, physical education is categorized as a performative subject area. Classified as such, it is usually not thought of as something you ask young people to think about, talk about, or even read about; but rather, something you ask them to “do.” Yet, upon closer examination, there exists a small wealth of library materials for children.

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Collection Building, vol. 5 no. 4
Type: Research Article
ISSN: 0160-4953

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