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Article
Publication date: 30 July 2021

Bing Zhang, Raiyan Seede, Austin Whitt, David Shoukr, Xueqin Huang, Ibrahim Karaman, Raymundo Arroyave and Alaa Elwany

There is recent emphasis on designing new materials and alloys specifically for metal additive manufacturing (AM) processes, in contrast to AM of existing alloys that were…

Abstract

Purpose

There is recent emphasis on designing new materials and alloys specifically for metal additive manufacturing (AM) processes, in contrast to AM of existing alloys that were developed for other traditional manufacturing methods involving considerably different physics. Process optimization to determine processing recipes for newly developed materials is expensive and time-consuming. The purpose of the current work is to use a systematic printability assessment framework developed by the co-authors to determine windows of processing parameters to print defect-free parts from a binary nickel-niobium alloy (NiNb5) using laser powder bed fusion (LPBF) metal AM.

Design/methodology/approach

The printability assessment framework integrates analytical thermal modeling, uncertainty quantification and experimental characterization to determine processing windows for NiNb5 in an accelerated fashion. Test coupons and mechanical test samples were fabricated on a ProX 200 commercial LPBF system. A series of density, microstructure and mechanical property characterization was conducted to validate the proposed framework.

Findings

Near fully-dense parts with more than 99% density were successfully printed using the proposed framework. Furthermore, the mechanical properties of as-printed parts showed low variability, good tensile strength of up to 662 MPa and tensile ductility 51% higher than what has been reported in the literature.

Originality/value

Although many literature studies investigate process optimization for metal AM, there is a lack of a systematic printability assessment framework to determine manufacturing process parameters for newly designed AM materials in an accelerated fashion. Moreover, the majority of existing process optimization approaches involve either time- and cost-intensive experimental campaigns or require the use of proprietary computational materials codes. Through the use of a readily accessible analytical thermal model coupled with statistical calibration and uncertainty quantification techniques, the proposed framework achieves both efficiency and accessibility to the user. Furthermore, this study demonstrates that following this framework results in printed parts with low degrees of variability in their mechanical properties.

Article
Publication date: 21 February 2020

David Wren

This paper presents exploratory, empirical data from a three-year study of organizational culture in for-profit, employee-owned businesses within the UK, comparing…

Abstract

Purpose

This paper presents exploratory, empirical data from a three-year study of organizational culture in for-profit, employee-owned businesses within the UK, comparing ownership types (direct, trust, and cooperative). It outlines the study and then focuses on worker cooperatives. Culture is illuminated through the lens of performance and reward management.

Design/methodology/approach

Qualitative data was gathered from three worker cooperatives based in the North of England, using semi-structured interviews, participant observation, and document review and was compared to qualitative data collected from other types of employee-owned businesses.

Findings

The findings suggest a distinct culture within worker cooperatives encompassing five key values: a whole life perspective, consistently shared values, self-ownership, self-control, and secure employment.

Research limitations/implications

Additional time with each cooperative and a greater spread of cooperatives would be beneficial. The research was carried out during a period of organizational growth for the case organizations, which may influence attitudes to reward and retention management.

Practical implications

The results inform recruitment and retention policy and practice within worker cooperatives and highlight concerns regarding the stresses of being a self-owner. These are important considerations for potential worker co-operatives alongside policy recommendations to advance employee ownership.

Originality/value

A comparative analysis of culture, performance, and rewards across different employee ownership types has not been undertaken before. This addresses an under-researched area of employee ownership regarding HR practices. Within the UK, recent research on the culture(s) of worker cooperatives is limited.

Details

Employee Relations: The International Journal, vol. 42 no. 3
Type: Research Article
ISSN: 0142-5455

Keywords

Article
Publication date: 1 April 2009

Michael Solem and Kenneth Foote

This paper describes the development, implementation, and preliminary outcomes of Enhancing Departments and Graduate Education (EDGE) in Geography, a multiyear project…

Abstract

This paper describes the development, implementation, and preliminary outcomes of Enhancing Departments and Graduate Education (EDGE) in Geography, a multiyear project begun in 2005 to study the process of professional development in graduate geography in the U.S and sponsored by the National Science Foundation. As a research and action project responding to the needs of graduate geography programs, EDGE seeks to provide academic geographers with an empirical perspective of disciplinary as well as interdisciplinary and generic skills that M.A./M.S. and Ph.D. students develop as a result of graduate education. Related objectives are to understand how disciplinary skills are applied by geography graduates once they enter the professional workforce in both academic and nonacademic professional settings, and to gauge the extent graduate programs are sufficiently preparing geography graduates for those careers. We begin by summarizing the research goals and design of EDGE, highlighting the roles and contributions of geographers and educational researchers, and noting the interplay and synergy between disciplinary and interdisciplinary methodologies and practices. To date, research has focused on: (1) assessing contemporary workforce competencies in professional geography and (2) examining the role of department climate and culture on student experience and faculty development within masters and doctoral programs. Although the EDGE research efforts are still underway, we present some preliminary research findings and discuss the implications of those outcomes for professional development in geography and related social and environmental sciences. Also discussed is the complementary nature of disciplinebased and interdisciplinary professional development efforts.

Details

International Journal for Researcher Development, vol. 1 no. 1
Type: Research Article
ISSN: 2048-8696

Keywords

Book part
Publication date: 14 November 2017

Domenico Dentoni, Kim Poldner, Stefano Pascucci and William B. Gartner

The objective of this chapter is to understand innovative processes of resource redeployment taking place during consumption. We label this as consumer entrepreneurship…

Abstract

The objective of this chapter is to understand innovative processes of resource redeployment taking place during consumption. We label this as consumer entrepreneurship. We define consumer entrepreneurship as the process of sharing and recombining resources innovatively to seek opportunities for self-creating user value. Through the illustration of heterogeneous forms of consumer peer-to-peer sharing, we argue that consumer entrepreneurship: (1) differs ontologically from a view of entrepreneurship as creation of exchange value; (2) bridges the notion, established in marketing studies, of consumers as value creators with the field of entrepreneurship; (3) develops mostly when the process of sharing is regulated informally, based on trust relationships; and (4) thrives as groups of sharing consumers discover and enact their values through the experimentation of multiple forms of product and service procurement. On the basis of these points, consumer entrepreneurship contributes to provide a novel perspective on hybrid organizations, that is, a view of hybrid organizations as everyday spaces where consumers create heterogeneous forms of (utilitarian, social, or environmental) value that they personally use as opposed to reward exchanges. Relative to the current definition of hybrid organizations (Pache & Santos, 2013) and organizing (Battilana & Lee, 2014), we argue that consumer entrepreneurship helps better explain “why, when, and how” consumers increasingly engage in peer-to-peer sharing organizations – a fledging and still underexplored way of organizing consumption worldwide.

Details

Hybrid Ventures
Type: Book
ISBN: 978-1-78743-078-5

Keywords

Article
Publication date: 1 April 1987

Udo Staber and Ho‐ward Aldrich

Labor market studies which focus on dichotomous categories such as employed and unemployed miss a variety of marginal employment situations. This article addre‐sses the…

Abstract

Labor market studies which focus on dichotomous categories such as employed and unemployed miss a variety of marginal employment situations. This article addre‐sses the recent proliferation of jobs created by democratically controlled alternative organizations. We argue, from a population ecology perspective, that the economic potential of small alternative organizations is limited. Although current environmental con‐ditions favor small specialist organizations, the salience of non‐material incentives prevents alternative organizations from fully exploiting emerging opportunities. Alternative employment is best considered an instance of underemployment with strong tendencies toward impoverishment and self‐exploitation.

Details

International Journal of Sociology and Social Policy, vol. 7 no. 4
Type: Research Article
ISSN: 0144-333X

Keywords

Book part
Publication date: 23 June 2020

Will Miller and Kyle Gunnels

Civic engagement means more than formal participation in the political process. Students can experience civic life across campus in ways that may not jump off the page as…

Abstract

Civic engagement means more than formal participation in the political process. Students can experience civic life across campus in ways that may not jump off the page as being relevant on first reading. Whether in the classroom through intentionally designed curricular experiences or through participating in a student organization focused on civic engagement, higher education should be helping develop students as active, participatory citizens. This chapter aims to provide the first look at how students across the United States are organizing on college campuses to participate in the political process.

Details

Civil Society and Social Responsibility in Higher Education: International Perspectives on Curriculum and Teaching Development
Type: Book
ISBN: 978-1-83909-464-4

Keywords

Article
Publication date: 16 June 2021

James Coviello and David E. DeMatthews

The purpose of this study is to understand how superintendents leading large, high-profile and politically complex urban districts make sense of their district–community…

Abstract

Purpose

The purpose of this study is to understand how superintendents leading large, high-profile and politically complex urban districts make sense of their district–community context and advocate for issues of equity.

Design/methodology/approach

This qualitative multi-case study took place over the 2017–18 school year and involved superintendents leading large urban districts in the United States, with data derived from semi-structured interviews, observations of school board and other public meetings and document collection.

Findings

This article describes how superintendents' sensemaking around equity was situated within the context of interactions with district board members and other stakeholder groups within their communities and influenced by their sense of professional vulnerability of public advocacy. Leaders often felt the need to attenuate their personal sense of equity and act strategically when framing related policies or practices. This study highlights examples by which superintendents were forced to confront instances when community support and prioritization of equity issues did not match their own and subsequently struggled to make sense of how to frame issues that were not in alignment.

Originality/value

Despite their positional authority, relatively little attention has been paid to the experience of school district superintendents in fostering equity. This study provides practical examples of superintendents making sense of complex leadership scenarios and taking strategic action to promote equity in authentic circumstances and has important implications for research and practice.

Details

Journal of Educational Administration, vol. 59 no. 5
Type: Research Article
ISSN: 0957-8234

Keywords

Abstract

Details

Pedestrian Behavior
Type: Book
ISBN: 978-1-848-55750-5

Content available
Book part
Publication date: 18 January 2021

Abstract

Details

Humanizing Higher Education through Innovative Approaches for Teaching and Learning
Type: Book
ISBN: 978-1-83909-861-1

Book part
Publication date: 3 September 2021

James Fowler

Abstract

Details

Strategy and Managed Decline: London Transport 1948–87
Type: Book
ISBN: 978-1-80043-189-8

1 – 10 of 30