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1 – 10 of 42Ralph H. Jansen, Cheryl L. Bowman, Sean Clarke, David Avanesian, Paula J. Dempsey and Rodger W. Dyson
This paper aims to review national aeronautics and space administration (NASA’s) broad investments in electrified aircraft propulsion (EAP). NASA investments are guided by an…
Abstract
Purpose
This paper aims to review national aeronautics and space administration (NASA’s) broad investments in electrified aircraft propulsion (EAP). NASA investments are guided by an assessment of potential market impacts, technical key performance parameters, and technology readiness attained through a combination of studies, enabling fundamental research and flight research.
Design/methodology/approach
The impact of EAP varies by market and NASA is considering three markets as follows: national/international, on-demand mobility and short-haul regional air transport. Technical advances in key areas have been made that indicate EAP is a viable technology. Flight research is underway to demonstrate integrated solutions and inform standards and certification processes.
Findings
A key finding is that sufficient technical advances in key areas have been made, which indicate EAP is a viable technology for aircraft. Significant progress has been made to reduce EAP adoption barriers and further work is needed to transition the technology to a commercial product and improve the technology, so it is applicable to large transonic aircraft.
Practical implications
Significant progress has been made to reduce EAP adoption barriers and further work is needed to transition the technology to a commercial product and improve the technology, so it is applicable to large transonic aircraft.
Originality/value
This paper will review the activities of the hybrid gas-electric subproject of the Advanced Air Transport Technology Project, the Revolutionary Vertical Lift Technology Project and the X-57 Flight Demonstration Project, and discuss the potential EAP benefits for commercial and military applications. This paper focuses on the vehicle-related activities, however, there are related NASA activities in air space management and vehicle autonomy activities, as well as a breakthrough technology project called the Convergent Aeronautics Solutions Project. The target audience is people interested in EAP.
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Francine Schlosser, Deborah M. McPhee, Jody L. Ralph and Hanna Salminen
Downloading and uploading offer labour‐saving advantages and are now accepted as useful options in online searching. All aspects are here considered, from recent technical…
Abstract
Downloading and uploading offer labour‐saving advantages and are now accepted as useful options in online searching. All aspects are here considered, from recent technical advances, applications and legal attitudes. There is also a review of current software for downloading. Recent developments mean a trend to higher internal memory and storage capacity, and greater transmission speeds. Packages now offer access to more than one host, give maximum assistance to the user without being menu‐driven and incorporate the latest developments in artificial intelligence. Disadvantages are in the length of time involved in the process and the fact that the legal issue of copyright has not yet been finalised. Database producers have turned to licensing under contract law, but there is still need to rely on user ethics, and the need for a standard permissions form is highlighted.
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Paolo Boccagni, Luis Eduardo PéRez Murcia and Milena Belloni
Purpose – Studies have described how migrants progressively transform extraneous spaces into familiar, meaningful environments, turning them into ‘homes’. However, in some…
Abstract
Purpose – Studies have described how migrants progressively transform extraneous spaces into familiar, meaningful environments, turning them into ‘homes’. However, in some contexts the opposite process occurs: what once felt like home becomes alien, unrecognizable and extraneous. Building on ethnographic vignettes on the everyday life of immobile young Eritreans, this chapter explores the paradox of ‘not feeling at home’ while being physically there.
Methodology – The chapter builds on three months’ ethnographic fieldwork in Eritrea and extended participant observation among Eritrean refugees in Ethiopia, Sudan and Italy from 2012 to 2014.
Findings – I show how the youth, in a pervasive context of migration culture, articulate a sense of belonging towards what they imagine as the ‘outside world’, while being unable to make sense of their lives in their own homeland. Using the notions of ‘estrangement’ and home-unmaking, it is possible to account for the feelings of those living in conditions of protracted crisis and explore the subjective worlds of prospective refugees.
Originality/Value – The chapter’s originality lies in the uniqueness of the ethnographic material and in the innovative approach to the debate on home-making and refugee studies. Instead of considering refugees’ home-making processes in other countries, this chapter analyses the experience of losing home without moving. By using the concept of estrangement, it investigates the manifold meanings of immobility while adding to the theoretical discussion on home-making/unmaking processes. Moreover, it contributes to the empirical investigation of determinants of asylum flows by investigating the case of Eritrea, a major refugee-producing country.
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Aarhus Kommunes Biblioteker (Teknisk Bibliotek), Ingerslevs Plads 7, Aarhus, Denmark. Representative: V. NEDERGAARD PEDERSEN (Librarian).
Martin Götz and Ernest H. O’Boyle
The overall goal of science is to build a valid and reliable body of knowledge about the functioning of the world and how applying that knowledge can change it. As personnel and…
Abstract
The overall goal of science is to build a valid and reliable body of knowledge about the functioning of the world and how applying that knowledge can change it. As personnel and human resources management researchers, we aim to contribute to the respective bodies of knowledge to provide both employers and employees with a workable foundation to help with those problems they are confronted with. However, what research on research has consistently demonstrated is that the scientific endeavor possesses existential issues including a substantial lack of (a) solid theory, (b) replicability, (c) reproducibility, (d) proper and generalizable samples, (e) sufficient quality control (i.e., peer review), (f) robust and trustworthy statistical results, (g) availability of research, and (h) sufficient practical implications. In this chapter, we first sing a song of sorrow regarding the current state of the social sciences in general and personnel and human resources management specifically. Then, we investigate potential grievances that might have led to it (i.e., questionable research practices, misplaced incentives), only to end with a verse of hope by outlining an avenue for betterment (i.e., open science and policy changes at multiple levels).
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Frank Safayeni, Lyn Purdy, Ralph van Engelen and Siva Pal
Many companies experience difficulty in implementing Just‐in‐Time(JIT) in their manufacturing system. Based on observations, the articleargues that the problem is partly due to…
Abstract
Many companies experience difficulty in implementing Just‐in‐Time (JIT) in their manufacturing system. Based on observations, the article argues that the problem is partly due to confusion about JIT and its implications and partly due to a desire to implement JIT within an existing organisational structure. A four‐level classification system is presented as a way of summarising the different degrees of JIT implementation and their difficulties.
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