AS background, I want to go back into history and say that ARB staff have been actively engaged in SST airworthiness discussions and research both within the ARB and with…
Abstract
AS background, I want to go back into history and say that ARB staff have been actively engaged in SST airworthiness discussions and research both within the ARB and with Government establishments since 1956. This work led to the formation within the ARB of the Supersonic Aircraft Airworthiness Committee early in 1960, out of which was formed the embryo of what has now become the joint Anglo‐French airworthiness requirements for the SST, the TSS Standards, with which probably many of you are familiar. Work was able to start on these Standards, thanks to the foresight of those responsible for the formation of the early Committee, within a month or so of the joint Governmental decision between Britain and France to go ahead with the Concorde project. The aim in producing the joint Standards has been to present the manufacturers with a common code against which the aircraft can be certified in both countries. The ultimate aim will be to certificate simultaneously, both in Britain and France, Concordes built to identical standards. Thus we hope to make life easier for both the manufacturers and operators, since even re‐sale — if you can imagine a secondhand Concorde — will be easier because it won't involve fundamental certification problems. Additionally, a vast amount of work has been done between the USA, Britain and France in an attempt to achieve identical standards in America. This has largely been very successful and the manufacturers are now aware of the standards needed to make an aeroplane that will be acceptable to all three authorities.
IN the coming age of supersonic transportation, factors of economic success and indeed public acceptance will depend directly upon how well the pilot performs his tasks. As the…
Abstract
IN the coming age of supersonic transportation, factors of economic success and indeed public acceptance will depend directly upon how well the pilot performs his tasks. As the ultimate operator, the airline pilot views the advent of the SST with optimism. Indeed, to control the airliners of tomorrow, shaped like smooth slim rapiers, yet carrying within them machinery representing the limits of man's technical knowledge—to guide these magnificent creations at over twice the speed of sound, to look out from over thirteen miles above the earth, to be a part of their contribution to commerce and men's affairs—this would boggle even the imagination of Tennyson! But it won't be all poetry and glamour. The airline pilot has many definite concerns, high among these being his working environment and the instrumentation and systems at his disposal for the efficient and safe management of his craft.
THE total scope of aerodynamic problems in helicopter design is extremely wide. One can find here such topics as laminar aerofoil sections, boundary layer control, compressibility…
Abstract
THE total scope of aerodynamic problems in helicopter design is extremely wide. One can find here such topics as laminar aerofoil sections, boundary layer control, compressibility effects (with all the unpleasant implications of the transonic region), aero‐elastic instability, and, of course, all of the mathematically challenging problems of stability in hovering and in forward flight.
Academic literature and news media on young people’s activism predominantly champions young people who align with liberal or progressive values, evident most recently in the…
Abstract
Academic literature and news media on young people’s activism predominantly champions young people who align with liberal or progressive values, evident most recently in the youth-led climate strikes around the world. Research is often undertaken by scholars who see their work as advocacy for children and young people, countering deficit-based depictions of politically disengaged or ill-informed youth. Yet, this scholarship rarely includes young people whose forms of political activism align with conservative, right-wing, or even alt-right politics. Such ‘selective advocacy’ reinforces a limited picture of the who and what of young people’s political participation. In this chapter, I explore what it might mean for the field of youth studies to provide a more complex picture of young people’s activism and the necessary discomfort that emerges when the desire to advocate for young research participants conflicts with a researcher’s own political and moral concerns. Through a feminist post-structural frame, I examine media and public discourses surrounding instances of young people’s activism in conservative, right-wing, and alt-right spaces. I present the case of a conservative protest organised by a group of university students and targeting a drag queen hosted children’s story time at a library in Brisbane, Australia. This case highlights the importance of maintaining ‘epistemic uncertainty’ when it comes to the complexity of youth and activism. If we are to provide a fuller picture of youth activism, I argue that it is important not to overlook less ‘comfortable’ forms that do not neatly align with the progressive advocacy that dominates the field of youth studies.
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James C. Brau, David A. Carter, Stephen E. Christophe and Kimberly G. Key
Initial public offering (IPO) lockup agreements prevent insider sale of shares for specified periods of time (often 180 days). This study investigates share price reactions at and…
Abstract
Initial public offering (IPO) lockup agreements prevent insider sale of shares for specified periods of time (often 180 days). This study investigates share price reactions at and around the time the lockup agreements expire. Results indicate statistically significant negative abnormal returns in the event window surrounding the expiration date. The results are consistent with informational asymmetries and decreasing incentive alignment between insiders and general shareholders. In addition, multivariate analysis identifies several variables that help explain these abnormal returns.
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Mie Augier and Sean F. X. Barrett
This paper honors the breadth of some of March’s key ideas on organizations by applying them to the development of amphibious operations in the United States. The development of…
Abstract
This paper honors the breadth of some of March’s key ideas on organizations by applying them to the development of amphibious operations in the United States. The development of amphibious operations highlights, in part, March’s appreciation for little ideas, the importance of ordinary actions as opposed to great men, and the larger societal trends in which evolutionary organizational change is nested. The persistence of ordinary men and a series of little ideas that accumulated for decades prior to the far more celebrated 1919–1939 interwar period established the intellectual and organizational foundation that made the interwar innovation period possible. We use this case not only as an example of how many of March’s ideas are relevant to a given case, but also to demonstrate how extending March’s ideas to different kinds of institutions and organizations might be useful for future scholars and for organizational scholarship.
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Pablo Cabanelas, Andrea Mezger, María Jesús López-Míguens and Klaus Rüdiger
Clean and sustainable energy becomes an alternative to differentiate electricity suppliers, but it is necessary to have a better understanding of their behaviour to achieve green…
Abstract
Purpose
Clean and sustainable energy becomes an alternative to differentiate electricity suppliers, but it is necessary to have a better understanding of their behaviour to achieve green customer loyalty. This paper aims to deploy a behavioural model that helps explain loyalty of customers towards green electricity providers by including a series of antecedents such as trust, satisfaction, perceived environmental impact, propensity to trust and perceived risk.
Design/methodology/approach
The paper deploys a behavioural model that it is tested through structural equation modelling to a sample of 231 German electricity consumers with green contracts. The data analysis included two steps: first, the development and validation of the scales used to measure the constructs proposed in the model, and second, the model test.
Findings
Results demonstrate that trust and satisfaction directly influence loyalty, while satisfaction and the other variables included in the model have an indirect relationship with loyalty mediated by trust and satisfaction. As green characteristics of electricity are difficult to evaluate, managers should demonstrate in their communication the environmental effects of their activities while emphasising their capacity to attend to supply requirements for building long-term customer relationships.
Originality/value
The paper is focused on the understanding of those consumers who have signed a green electricity contract and the antecedents associated to their loyalty. The behavioural model helps identify how managers should apply marketing strategies to foster green consumers loyalty.
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Maria Bampasidou, Carlos A. Flores, Alfonso Flores-Lagunes and Daniel J. Parisian
Job Corps is the United State’s largest and most comprehensive training program for disadvantaged youth aged 16–24 years old. A randomized social experiment concluded that, on…
Abstract
Job Corps is the United State’s largest and most comprehensive training program for disadvantaged youth aged 16–24 years old. A randomized social experiment concluded that, on average, individuals benefited from the program in the form of higher weekly earnings and employment prospects. At the same time, “young adults” (ages 20–24) realized much higher impacts relative to “adolescents” (ages 16–19). Employing recent nonparametric bounds for causal mediation, we investigate whether these two groups’ disparate effects correspond to them benefiting differentially from distinct aspects of Job Corps, with a particular focus on the attainment of a degree (GED, high school, or vocational). We find that, for young adults, the part of the total effect of Job Corps on earnings (employment) that is due to attaining a degree within the program is at most 41% (32%) of the total effect, whereas for adolescents that part can account for up to 87% (100%) of the total effect. We also find evidence that the magnitude of the part of the effect of Job Corps on the outcomes that works through components of Job Corps other than degree attainment (e.g., social skills, job placement, residential services) is likely higher for young adults than for adolescents. That those other components likely play a more important role for young adults has policy implications for more effectively servicing participants. More generally, our results illustrate how researchers can learn about particular mechanisms of an intervention.
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The United States government is the world's largest publisher. Its presses churn out thousands of items annually, covering every conceivable subject. Even though most of the items…
Abstract
The United States government is the world's largest publisher. Its presses churn out thousands of items annually, covering every conceivable subject. Even though most of the items deal with present day concerns, the United States government is responsible for the publication of a large number of histories. Unfortunately, these works, with the possible exception of the Department of Defense's Military History Series, have received little exposure and limited use. In an effort to bring this valuable resource to light, the following bibliography presents annotated citations to nearly 150 histories published from mid‐1977 through mid‐1979.