Hany Hassanin, Khamis Essa, Chunlei Qiu, Ali M. Abdelhafeez, Nicholas J.E. Adkins and Moataz M. Attallah
The purpose of this study is to develop a manufacturing technology using hybrid selective laser melting/hot isostatic pressing (SLM/HIP) process to produce full density net-shape…
Abstract
Purpose
The purpose of this study is to develop a manufacturing technology using hybrid selective laser melting/hot isostatic pressing (SLM/HIP) process to produce full density net-shape components more rapidly and at lower cost than processing by SLM alone.
Design/methodology/approach
Ti-6Al-4V powder was encapsulated in situ by the production of as-SLMed shell prior to the HIP process. After HIPping, the SLM shell is an integral part of the final component. Finite element (FE) modelling based on pure plasticity theory of porous metal coupled with an iterative procedure has been adopted to simulate HIPping of the encapsulated Ti-6Al-4V powder and SLMed shell. Two demonstrator parts have been modelled, designed, produced and experimentally validated. Geometrical analysis and microstructural characterisation have been carried out to demonstrate the efficiency of the process.
Findings
The FE model is in agreement with the measured data obtained and confirms that the design of the shell affects the resulting deformed parts. In addition, the scanning electron microscope (SEM) and Electron backscatter diffraction EBSD (EBSD) of the interior and exterior parts reveal a considerably different grain structure and crystallographic orientation with a good bonding between the SLMed shell and HIPped powder.
Originality/value
An approach to improve SLM productivity by combining it with HIP is developed to further innovate the advanced manufacturing field. The possibility of the hybrid SLS/HIP supported by FEA simulation as a net shape manufacturing process for fabrication of high performance parts has been demonstrated.
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Latisha Reynolds, Amber Willenborg, Samantha McClellan, Rosalinda Hernandez Linares and Elizabeth Alison Sterner
This paper aims to present recently published resources on information literacy and library instruction providing an introductory overview and a selected annotated bibliography of…
Abstract
Purpose
This paper aims to present recently published resources on information literacy and library instruction providing an introductory overview and a selected annotated bibliography of publications covering all library types.
Design/methodology/approach
This paper introduces and annotates English-language periodical articles, monographs, dissertations and other materials on library instruction and information literacy published in 2016.
Findings
The paper provides information about each source, describes the characteristics of current scholarship and highlights sources that contain unique or significant scholarly contributions.
Originality/value
The information may be used by librarians and interested parties as a quick reference to literature on library instruction and information literacy.
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This chapter addresses one of the most common and long-standing problems among college students, namely depression, as well as a potential consequence of depression, suicide. A…
Abstract
This chapter addresses one of the most common and long-standing problems among college students, namely depression, as well as a potential consequence of depression, suicide. A formal definition of depression is presented, and symptoms of depression are discussed. Notably, clinical depression is differentiated from “feeling down” or having “the blues.” Common measures of depression for college students are described, and the current prevalence of depression among college students is explored, along with data pertaining to trends and trajectories. Particular attention is devoted to differences in rates and severity of depression among students of various ethnicities, gender identities, disabilities and sexual orientations. Next, the chapter covers various theories about and studies on the causes and consequences of depression, as well as preventive and remedial efforts that students can engage in to minimize the adverse effects of depression. The chapter concludes with a focus on college student suicide, including its prevalence, predictors of suicidal thoughts and behaviors and prevention and treatment of college student suicide.
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Gary N. Burns, Levi R. G. Nieminen, Lindsey Kotrba and Daniel Denison
On a global scale, leadership takes place within a complex environment that is molded both by national culture and organizational culture influences. This chapter explores…
Abstract
On a global scale, leadership takes place within a complex environment that is molded both by national culture and organizational culture influences. This chapter explores leader-culture (L-C) fit in this global context. Drawing together distinct perspectives on national culture and organizational culture, we identify potential contingencies of L-C fit across these levels. In addition to identifying key gaps and areas for future exploration, we also discuss the practical uses of fit when selecting and developing leaders. Overall, we argue that researchers and practitioners could benefit from an expanded perspective on cultural fit to simultaneously address aspects of national and organizational culture.
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As CD‐ROM becomes more and more a standard reference and technicalsupport tool in all types of libraries, the annual review of thistechnology published in Computers in Libraries…
Abstract
As CD‐ROM becomes more and more a standard reference and technical support tool in all types of libraries, the annual review of this technology published in Computers in Libraries magazine increases in size and scope. This year, author Susan L. Adkins has prepared this exceptionally useful bibliography which she has cross‐referenced with a subject index.
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Nicholas Ford, Paul Trott and Christopher Simms
The purpose of this paper is to explore older people’s food consumption experiences. Specifically, the paper seeks to provide understanding on the influence of food intake on…
Abstract
Purpose
The purpose of this paper is to explore older people’s food consumption experiences. Specifically, the paper seeks to provide understanding on the influence of food intake on consumer vulnerability and how this manifests within people’s lives.
Design/methodology/approach
The study adopts an interpretive, exploratory approach, using in-depth interviews with 20 older consumers in the UK. Thematic analysis is conducted, establishing patterns and contradictions with the data.
Findings
The findings demonstrate how biological, psychological and social age-related changes can contribute to reduced food intake in later life. The loss of control over one’s consumption experiences as a result of inappropriate portion sizes acts as a source of both immediate and future vulnerability. Resultant food wastage can serve as an immediate reminder of negative associates with ageing, while the accumulative effect of sustained under-consumption contributes to increased frailty. As a result, consumer vulnerability can pervade other contexts of an individual’s life.
Practical implications
The research reveals opportunities for firms to use packaging development to reduce experiences of consumer vulnerability through reduced apportionment of packaged food products. However, this needs to be considered within a multi-demographic marketplace.
Originality/value
This paper contributes to literature by providing a unique lens with which to understand consumer vulnerability. The findings offer a developmental perspective on the experience of consumer vulnerability, revealing the stages of proximate, immediate, intermediate and ultimate vulnerability. This perspective has the potential to offer more detailed, nuanced insights into vulnerability in other contexts beyond food consumption.
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Barrie O. Pettman and Richard Dobbins
This issue is a selected bibliography covering the subject of leadership.
Abstract
This issue is a selected bibliography covering the subject of leadership.