Matthew James Benning and Kenny Dalgarno
This paper aims to develop and then evaluate a novel consolidation and powder transfer mechanism for electrophotographic 3D printing, designed to overcome two longstanding…
Abstract
Purpose
This paper aims to develop and then evaluate a novel consolidation and powder transfer mechanism for electrophotographic 3D printing, designed to overcome two longstanding limitations of electrophotographic 3D printing: fringing and a build height limitation.
Design/methodology/approach
Analysis of the electric field generated within electrophotographic printing was used to identify the underlying causes of the fringing and build height limitations. A prototype machine was then designed and manufactured to overcome these limitations, and a number of print runs were carried out as proof of concept studies.
Findings
The analysis suggested that a machine design which separated the electrostatic powder deposition of the print engine from the layer transfer and consolidation steps is required to overcome fringing and build height limitations. A machine with this build architecture was developed and proof of concept studies showed that the build height and fringing effects were no longer evident.
Research limitations/implications
Electrophotography (EP) was initially seen as a promising technology for 3D printing, largely because the potential for multi-material printing at high speed. As these limitations can now be overcome, there is still potential for EP to deliver a high-speed 3D printing system which can build parts consisting of multiple materials.
Originality/value
The analysis of EP, the new method for the transfer and consolidation of layers and the proof of concept study are all original and provide new information on how EP can be adopted for 3D printing.
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Matthew James Kerry and Justin A. DeSimone
The purpose of this paper is to reexamine exploration-exploitation’s reciprocality in organizational ambidexterity (OA) research. OA figures prominently in a variety of…
Abstract
Purpose
The purpose of this paper is to reexamine exploration-exploitation’s reciprocality in organizational ambidexterity (OA) research. OA figures prominently in a variety of organization science phenomena. Introduced as a two-stage model for innovation, theory specifies reciprocal reinforcement between the OA processes of exploration (eR) and exploitation (eT). In this study, the authors argue that previous analyses of OA necessarily neglect this reciprocality in favor of conceptualizations that conform to common statistical techniques.
Design/methodology/approach
The authors propose joint-variance (JV) as a soluble estimator of exploration–exploitation (eR-eT) reciprocality. An updated systematic literature synthesis yielded K = 50 studies (53 independent samples, N = 11,743) for further testing.
Findings
Three primary findings are as follows: JV reduced negative confounding, explaining 45 per cent of between-study variance. JV quantified the positive confounding in separate meta-analytic estimates of eR and eT on performance because of double-counting (37.6 per cent), and substantive application of JV to hypothesis testing supported OA theoretical predictions.
Research limitations/implications
The authors discuss practical consideration for eR-eT reciprocality, as well as theoretical contributions for cohering the OA empirical literature.
Practical implications
The authors discuss design limitations and JV measurement extensions for the future.
Social implications
Learning in OA literature has been neglected or underestimated.
Originality/value
Because reciprocality is theorized, yet absent in current models, existing results represent confounded or biased evidence of the OA’s effect on firm performance. Subsequently, the authors propose JV as a soluble estimator of eR-eT learning modes.
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This paper is concerned with the cultural components of change and district coherence. The purpose of this paper is to present two district cases studies, illustrating their…
Abstract
Purpose
This paper is concerned with the cultural components of change and district coherence. The purpose of this paper is to present two district cases studies, illustrating their experiences with a particular initiative that guided local leaders through both structural and cultural changes.
Design/methodology/approach
The paper uses two qualitative case studies to illustrate how a new initiative led by an external partner might help local district leaders learn to shift from financial pass-through or compliance-oriented observer to coherence-making, capacity-building force for schools. Cases were conducted in New Hampshire, USA, studying two districts implementing an RTI-related initiative.
Findings
The project was an opportunity to use a common objective – improving learning for all students – and several common school elements – team meetings, student data and job-embedded professional development – in combination to impact how staff work and how they work together for the benefit of students. In particular, team-based leadership, instructional coaching, and collaboration structured around instruction and student data were all powerful practices with structural and cultural impacts.
Research limitations/implications
It remains to be seen if the districts can both initiate these changes on their own as well as sustain these culture-making roles over time.
Practical implications
The paper illustrates several activities that other districts may use to work toward becoming cultural learning organizations.
Originality/value
The value of district central offices taking on new roles, such as learning organization or cultural coherence maker, is established by authors like Honig. This paper illustrates on way district offices might learn to take on these roles.
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For more than a decade, public opinion polls have shown that nearly 80% of Americans support hate crime legislation as a response to violence committed because of the victim's…
Abstract
For more than a decade, public opinion polls have shown that nearly 80% of Americans support hate crime legislation as a response to violence committed because of the victim's race, color, religion, and sexual orientation. Americans' widespread support for legislation aimed at bias-motivated crimes is not matched by the federal and state efforts devoted to responding to such crimes. This chapter describes the myriad factors contributing to America's limited police and prosecutorial response to hate crimes. After a discussion of the patchwork of state and federal legislation aimed at hate crimes, the chapter analyzes the substantial legislative and administrative structures that hamper the enforcement of hate crime law in the United States.
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This article explores how personalised technology could have the potential to change the behaviour of people with learning disabilities, enabling them to take more control of…
Abstract
This article explores how personalised technology could have the potential to change the behaviour of people with learning disabilities, enabling them to take more control of their lives and increase their independence. Hft investigates unforeseen outcomes in its work with people with learning disabilities and personalised technology and asks whether personalised technology could be used as a training tool?
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Five prominent consultants‐Richard Boss, Susan Baerg Epstein, Rob McGee, Joseph Matthews, and James E. Rush—discuss the three most common mistakes made by librarians involved in…
Abstract
Five prominent consultants‐Richard Boss, Susan Baerg Epstein, Rob McGee, Joseph Matthews, and James E. Rush—discuss the three most common mistakes made by librarians involved in automation. These mistakes are costly in terms of time, money, and functional success. They are made repeatedly; all are avoidable.
Five prominent consultants‐Richard Boss, Susan Baerg Epstein, Rob McGee, Joseph Matthews, and James E. Rush—discuss the most common mistakes vendors make in implementing automated…
Abstract
Five prominent consultants‐Richard Boss, Susan Baerg Epstein, Rob McGee, Joseph Matthews, and James E. Rush—discuss the most common mistakes vendors make in implementing automated systems. Basic problems relate to identification of library needs; communications; delivery dates; inadequate systems; and systems support. Suggestions are made for correcting these problems.
Although the first known sociological writings on sport in the English-speaking Caribbean (ESC) date from 1953, the sociology of sport is very much a nascent subdiscipline that…
Abstract
Although the first known sociological writings on sport in the English-speaking Caribbean (ESC) date from 1953, the sociology of sport is very much a nascent subdiscipline that occupies a very marginal and almost nonexistent position in the region’s educational, research, and development agenda. This is evident in the number of sport sociologists, courses of study, professional organizations, conferences/seminars, and publications on the subject. While this chapter examines the historical, social, cultural, institutional, and economic factors that have contributed to this situation, it also profiles the limited publications in the field, the theoretical and methodological characteristics, its authors, and their location, as well as some of the recent positive developments that make for change. However, while noting the positive signs of change, it is suggested that the future for the sociology of sport in the ESC is rather mixed for its growth will continue to be constrained if traditional thinking towards the study of sport and its funding persist or remain dominant.
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The purpose of this paper is to reveal insights into the relationship between migrant communities and the hospitality industry by examining the case study of Irish migrants into…
Abstract
Purpose
The purpose of this paper is to reveal insights into the relationship between migrant communities and the hospitality industry by examining the case study of Irish migrants into nineteenth century Victoria in Australia.
Design/methodology/approach
The paper provides examples of the pattern of engagement with the hospitality industry as well as individual and family stories that highlight how hotel‐keeping and the service of alcohol in Melbourne and regional Victoria in the mid‐to‐late 1800s, was a key element in social improvement and mobility of Irish migrants at that time.
Findings
Although the relationship between the English and the Irish in the nineteenth century could be classified as difficult, the tensions that characterised Anglo‐Irish relations in a European context were remarkably absent in colonial Australia. This paper describes how conditions in the colonies when the majority of Irish migrants arrived allowed them to use the hospitality industry to improve their social standing and to consolidate their position in Australian society.
Research limitations/implications
Migration presents an interesting interface between host communities and guest migrants, which go to the heart of hospitality. In addition, this case study suggests there are some interesting avenues to be followed by exploring cases of other migrant communities both in their relationships with hosts, but also in the opportunities offered by the hospitality industry for opportunities denied to migrants in wider community.
Practical implications
The opportunities offered to migrants in the hospitality industry can provide a useful means of engagement for migrants into host communities through employment, and more importantly through the cultural interface allowed through hospitality enterprises whereby the migrant as guest acts as host to host community members in hospitality entrepreneurship.
Originality/value
The paper has value to both practitioners and academics because it provides an example of migrant experiences and the opportunities presented by the hospitality industry for employment, entrepreneurship and ultimately community integration.