The Concorde and aeronautical research

Theoretical and experimental work carried out in various research centers, and particularly at ONERA, which led to the conception and to the main technical solutions included in the design of Concorde: plane form, twist and camber of the wing, lift augmentation by upper surface vortices, kinetic heating, air intakes and jet exhausts, materials, aeroelasticity. The development of research, and the numerous tests carried out for the benefit of the designers since the beginning of the project, are also outlined

Lunar accretion from a Roche-interior fluid disk

We use a hybrid numerical approach to simulate the formation of the Moon from an impact-generated disk, consisting of a fluid model for the disk inside the Roche limit and an N-body code to describe accretion outside the Roche limit. As the inner disk spreads due to a thermally regulated viscosity, material is delivered across the Roche limit and accretes into moonlets that are added to the N-body simulation. Contrary to an accretion timescale of a few months obtained with prior pure N-body codes, here the final stage of the Moon's growth is controlled by the slow spreading of the inner disk, resulting in a total lunar accretion timescale of ~10^2 years. It has been proposed that the inner disk may compositionally equilibrate with the Earth through diffusive mixing, which offers a potential explanation for the identical oxygen isotope compositions of the Earth and Moon. However, the mass fraction of the final Moon that is derived from the inner disk is limited by resonant torques between the disk and exterior growing moons. For initial disks containing < 2.5 lunar masses (ML), we find that a final Moon with mass > 0.8ML contains < 60% material derived from the inner disk, with this material preferentially delivered to the Moon at the end of its accretion.Comment: 42 pages, 10 figures, 5 tables. Accepted for publication in The Astrophysical Journa

Work domain analysis and intelligent transport systems: Implications for vehicle design

This article presents a Work Domain Analysis (WDA) of the road transport system in Victoria, Australia. A series of driver information requirements and tasks that could potentially be supported through the use of Intelligent Transport Systems (ITS) are then extracted from the WDA. The potential use of ITS technologies to circumvent these information gaps and provide additional support to drivers is discussed. It is concluded that driver information requirements are currently not entirely satisfied by contemporary vehicle design and also that there are a number of driving tasks that could be further supported through the provision of supplementary systems within vehicles

Asteroseismology of Massive Stars : Some Words of Caution

Although playing a key role in the understanding of the supernova phenomenon, the evolution of massive stars still suffers from uncertainties in their structure, even during their "quiet" main sequence phase and later on during their subgiant and helium burning phases. What is the extent of the mixed central region? In the local mixing length theory (LMLT) frame, are there structural differences using Schwarzschild or Ledoux convection criterion? Where are located the convective zone boundaries? Are there intermediate convection zones during MS and post-MS phase, and what is their extent and location? We discuss these points and show how asteroseismology could bring some light on these questions.Comment: 10 pages, 5 figures, IAU Symposium 307, New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry, G. Meynet, C. Georgy, J.H. Groh & Ph. Stee, ed

Data Serving Climate Simulation Science at the NASA Center for Climate Simulation

The NASA Center for Climate Simulation (NCCS) provides high performance computational resources, a multi-petabyte archive, and data services in support of climate simulation research and other NASA-sponsored science. This talk describes the NCCS's data-centric architecture and processing, which are evolving in anticipation of researchers' growing requirements for higher resolution simulations and increased data sharing among NCCS users and the external science community

Imitation, assimilation and innovation : Charlie Christian’s influence on Wes Montgomery’s improvisational style in his early recordings (1957-1960)

Much of guitarist Wes Montgomery’s study of jazz improvisation came from imitating Charlie Christian’s guitar solos. The purpose of this study is to identify and examine significant improvisational traits that Wes Montgomery developed as a direct result of his imitation and assimilation of Charlie Christian. The dissertation investigates the musical traditions in Christian’s playing that were absorbed into Montgomery’s playing and how Montgomery was able to use these traits to foster new musical traditions. The solo transcriptions are limited to Montgomery’s early recordings between 1957 and ending with his 1960 album The Incredible Jazz Guitar of Wes Montgomery. The study also examines the relationship imitation has with creativity in jazz and how originality is influenced by the past. The dissertation examines the two guitarists’ use of five harmonic and melodic devices over dominant harmonies: scales, arpeggios, use of chromatic pitches, formulas and enclosures, and harmonic substitutions. The study focuses on how Montgomery’s melodic and harmonic treatment of dominant harmonies has been influenced by his imitation and assimilation of Christian’s improvisations. The study examines how Montgomery differentiated himself in his improvisations from Christian’s. A strong emphasis is given to the significance of these differences and how these differences are connected to Montgomery’s originality and innovation. This dissertation confirms that Montgomery’s innovation was strongly linked to his imitation of Charlie Christian. It also suggests that devotion to the imitation of past artists is needed in developing an original voice in jazz.Thesis (D.A.)School of MusicBiographical history and musical development of Charlie Christian -- Biographical history and musical development of Wes Montgomery -- Stylistic traits of Charlie Christian over dominant-seventh harmonies -- Stylistic traits of Wes Montgomery influenced by Charlie Christian -- Conclusion

The Spanish American Homeland: Four Centuries in New Mexico\u27s Rio Arriba by Alvar W. Carlson (review)

This comprehensive examination of Spanish, Mexican, and United States land tenure systems in New Mexico\u27s Rio Arriba is based on the discipline of geography Alvar Carlson undertakes his journey into land grant history in order to ex- amine cultural and environmental changes visible in the region after some 400 years of history. He finds that land grant history is certainly in need of revision as he focuses upon the incorporation of subsistence agriculture and land use pat- terns in Rio Arriba

Chicano Education in the Era of Segregation by Gilbert G. Gonzalez (review)

This study is a Marxist critique of public education in the the era of de jure segregation. The major focus is on educational adapted to the special needs of a linguistically and culturally community--policy that resulted in intelligence testing, tracking, differentiation, vocational education, and segregated schools. political economy, the public school processed the Mexican student of quality control. Gilbert Gonzales focuses on the theoretical methods of this control and holds it up for rigid analysis