967 research outputs found
Aerodynamic characteristics of a large-scale hybrid upper surface blown flap model having four engines
Data are presented from an investigation of the aerodynamic characteristics of large-scale wind tunnel aircraft model that utilized a hybrid-upper surface blown flap to augment lift. The hybrid concept of this investigation used a portion of the turbofan exhaust air for blowing over the trailing edge flap to provide boundary layer control. The model, tested in the Ames 40- by 80-foot Wind Tunnel, had a 27.5 deg swept wing of aspect ratio 8 and 4 turbofan engines mounted on the upper surface of the wing. The lift of the model was augmented by turbofan exhaust impingement on the wind upper-surface and flap system. Results were obtained for three flap deflections, for some variation of engine nozzle configuration and for jet thrust coefficients from 0 to 3.0. Six-component longitudinal and lateral data are presented with four engine operation and with the critical engine out. In addition, a limited number of cross-plots of the data are presented. All of the tests were made with a downwash rake installed instead of a horizontal tail. Some of these downwash data are also presented
Charged kaon and pion production at midrapidity in proton-nucleus and sulphur-nucleus collisions
Happy hosts? International tourist arrivals and residents' subjective well-being in Europe
While there has been a growing interest in the relationship between perceived tourism impacts and residents’ quality of life, little is known about how residents’ well-being is affected by actual tourist arrivals. This paper studies the effect of international tourist arrivals on the subjective well-being – happiness and life satisfaction – of residents in European countries. Data come from the six waves of the European Social Survey, conducted in 32 countries in 2002-2013. The results of the OLS fixed-effects and instrumental-variable estimations suggest that tourist arrivals reduce residents’ life satisfaction. This negative relationship tends to be more pronounced in countries where tourism intensity is relatively high, as well as among people living in rural areas. In addition, tourist arrivals have a greater negative relationship with the evaluative component of subjective well-being (life satisfaction) than its affective component (happiness)
Lebanese traders in Cotonou: A socio-cultural analysis of economic mobility and capital accumulation
Passenger cars and other small vehicles have for a long time been the backbone of transport in west Africa. The cars are usually second-hand, and they are sourced on overseas car markets, mostly in western Europe. During the 1990s the port town of Cotonou, Bénin, became one of the most prominent hubs in this car trade: car markets mushroomed, attracting large numbers and a wide variety of traders - including a prominent contingent of Lebanese. This article discusses the role of these Lebanese traders in the car trade through a reconstruction of their careers. It reveals that Lebanese business, which can go through a rapid succession of different economic activities, starts as kin-based enterprise, but gradually incorporates peers and friends. Close analysis of this practice suggests that Lebanese immigrant traders are to a large extent driven by the ideal of enjoying life by adopting an expatriate lifestyle
Stigma narratives: LGBT transitions and identities in Malta
This article is available open access through the publisher’s website at the link below. Copyright @ 2011 A B Academic Publishers.This article considers narratives of transition experiences of a group of Lesbian, Gay, Bisexual and Transgender (LGBT) young people in Malta. The article draws on Goffman's concept of stigma and uses this to explore transitions in a society that retains some traditional characteristics, particularly the code of honour and shame, although mediated by aspects of modernity. Interviews were undertaken with 15 young people with the goal of producing narratives. The article analyses the experience of stigma, its effects and how young people manage its consequences. It concludes by drawing attention to the pervasive nature of stigma and the importance of structure, agency and reflexivity in youth transitions. In particular stigma remains an important feature of societies in which hetero-normative sexuality remains dominant
The OscSNS White Paper
There exists a need to address and resolve the growing evidence for
short-baseline neutrino oscillations and the possible existence of sterile
neutrinos. Such non-standard particles require a mass of eV/c, far
above the mass scale associated with active neutrinos, and were first invoked
to explain the LSND appearance signal.
More recently, the MiniBooNE experiment has reported a excess of
events in antineutrino mode consistent with neutrino oscillations and with the
LSND antineutrino appearance signal. MiniBooNE also observed a
excess of events in their neutrino mode data. Lower than expected
neutrino-induced event rates using calibrated radioactive sources and nuclear
reactors can also be explained by the existence of sterile neutrinos. Fits to
the world's neutrino and antineutrino data are consistent with sterile
neutrinos at this eV/c mass scale, although there is some tension
between measurements from disappearance and appearance experiments. In addition
to resolving this potential major extension of the Standard Model, the
existence of sterile neutrinos will impact design and planning for all future
neutrino experiments. It should be an extremely high priority to conclusively
establish if such unexpected light sterile neutrinos exist. The Spallation
Neutron Source (SNS) at Oak Ridge National Laboratory, built to usher in a new
era in neutron research, provides a unique opportunity for US science to
perform a definitive world-class search for sterile neutrinos.Comment: This white paper is submitted as part of the SNOWMASS planning
proces
Transverse Spin at PHENIX: Results and Prospects
The Relativistic Heavy Ion Collider (RHIC), as the world's first and only
polarized proton collider, offers a unique environment in which to study the
spin structure of the proton. In order to study the proton's transverse spin
structure, the PHENIX experiment at RHIC took data with transversely polarized
beams in 2001-02 and 2005, and it has plans for further running with transverse
polarization in 2006 and beyond. Results from early running as well as
prospective measurements for the future will be discussed.Comment: 6 pages, 2 figures, presented at Transversity 2005, Como, Ital
Two-Proton Correlations near Midrapidity in p+Pb and S+Pb Collisions at the CERN SPS
Correlations of two protons emitted near midrapidity in p+Pb collisions at
450 GeV/c and S+Pb collisions at 200A GeV/c are presented, as measured by the
NA44 Experiment. The correlation effect, which arises as a result of final
state interactions and Fermi-Dirac statistics, is related to the space-time
characteristics of proton emission. The measured source sizes are smaller than
the size of the target lead nucleus but larger than the sizes of the
projectiles. A dependence on the collision centrality is observed; the source
size increases with decreasing impact parameter. Proton source sizes near
midrapidity appear to be smaller than those of pions in the same interactions.
Quantitative agreement with the results of RQMD (v1.08) simulations is found
for p+Pb collisions. For S+Pb collisions the measured correlation effect is
somewhat weaker than that predicted by the model simulations, implying either a
larger source size or larger contribution of protons from long-lived particle
decays.Comment: 10 pages (LaTeX) text, 4 (EPS) figures; accepted for publication in
Phys. Lett.
Experiences and recommendations of veterinarians for the Dutch disciplinary system-a survey-based study
INTRODUCTION: In the Netherlands, the veterinary disciplinary system is governmentally executed and was originally designed to provide an educational effect on veterinarians as part of maintaining quality standards. METHODS: Over 900 veterinarians were questioned (20% of the total number of veterinarians working in veterinary medicine in the Netherlands). It was ascertained whether or not they were aware of the disciplinary system, if it affected their way of working and what impact it had on their way of working after having faced a disciplinary case. Respondents were given the opportunity to express their opinions about the system and possible improvements. RESULTS: The risk of complaints was found to be significantly greater when a veterinarian owned a practice compared to veterinarians who were employees. Veterinarians with their own practice were generally older (male) veterinarians. Whether this was a direct effect or just the effect of having a longer career could not be answered. Multiple disciplinary procedures appeared to have no influence. In 13%, veterinarians indicated that the disciplinary system had led to a more defensive way of practicing medicine to avoid complaints. DISCUSSION AND CONCLUSIONS: Most veterinarians supported a disciplinary system as a tool for maintaining and improving the integrity and reputation of the profession as a whole. Recommendations to improve were (1) shortening the length of the procedure, (2) screening for validity, (3) using online systems for communication with the disciplinary council, (4) the option of mediation before getting involved in a full procedure and (5) instituting a complaint fee
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