Horizon Report 2009

El informe anual Horizon investiga, identifica y clasifica las tecnologías emergentes que los expertos que lo elaboran prevén tendrán un impacto en la enseñanza aprendizaje, la investigación y la producción creativa en el contexto educativo de la enseñanza superior. También estudia las tendencias clave que permiten prever el uso que se hará de las mismas y los retos que ellos suponen para las aulas. Cada edición identifica seis tecnologías o prácticas. Dos cuyo uso se prevé emergerá en un futuro inmediato (un año o menos) dos que emergerán a medio plazo (en dos o tres años) y dos previstas a más largo plazo (5 años)

Product state control of bi-alkali chemical reactions

We consider ultracold, chemically reactive scattering collisions of the diatomic molecules KRb. When two such molecules collide in an ultracold gas, we find that they are energetically forbidden from reacting to form the trimer species K$_2$Rb or Rb$_2$K, hence can only react via the bond-swapping reaction 2KRb $\to$ K$_2$ + Rb$_2$. Moreover, the tiny energy released in this reaction can in principle be set to zero by applying electric or microwave fields, implying a means of controlling the available reaction channels in a chemical reaction.Comment: 4 pages double column, 2 figures, 2 table

A Low Cost and Labor Efficient Method for Rearing Black Cutworms (Lepidoptera: Noctuidae)

The black cutworm, Agrotis ipsilon (Hufnagel), has been and continues to be the subject of many biological and control studies in the north-central states. Interest in this insect can often be traced to its status as a major, but sporadic pest of field com in the region

Monte Carlo simulation of wave sensing with a short pulse radar

A Monte Carlo simulation is used to study the ocean wave sensing potential of a radar which scatters short pulses at small off-nadir angles. In the simulation, realizations of a random surface are created commensurate with an assigned probability density and power spectrum. Then the signal scattered back to the radar is computed for each realization using a physical optics analysis which takes wavefront curvature and finite radar-to-surface distance into account. In the case of a Pierson-Moskowitz spectrum and a normally distributed surface, reasonable assumptions for a fully developed sea, it has been found that the cumulative distribution of time intervals between peaks in the scattered power provides a measure of surface roughness. This observation is supported by experiments

Advanced aircraft engine materials trends

Recent activities of the Lewis Research Center are reviewed which are directed toward developing materials for rotating hot section components for aircraft gas turbines. Turbine blade materials activities are directed at increasing metal temperatures approximately 100 C compared to current directionally solidified alloys by use of oxide dispersion strengthening or tungsten alloy wire reinforcement of nickel or iron base superalloys. The application of thermal barrier coatings offers a promise of increasing gas temperatures an additional 100 C with current cooling technology. For turbine disk alloys, activities are directed toward reducing the cost of turbine disks by 50 percent through near net shape fabrication of prealloyed powders as well as towards improved performance. In addition, advanced alloy concepts and fabrication methods for dual alloy disks are being studied as having potential for improving the life of future high performance disks and reducing the amount of strategic materials required in these components

Finance, firm size and growth.

[Dataset available: http://hdl.handle.net/10411/15986]

Assessment of a satellite power system and six alternative technologies

The satellite power system is assessed in comparison to six alternative technologies. The alternatives are: central-station terrestrial photovoltaic systems, conventional coal-fired power plants, coal-gasification/combined-cycle power plants, light water reactor power plants, liquid-metal fast-breeder reactors, and fusion. The comparison is made regarding issues of cost and performance, health and safety, environmental effects, resources, socio-economic factors, and institutional issues. The criteria for selecting the issues and the alternative technologies are given, and the methodology of the comparison is discussed. Brief descriptions of each of the technologies considered are included

Informe Horizon 2009

39 p. ; 22 cmLa serie de Informes Horizon es el resultado más tangible del Proyecto Horizon del New Media Consortium, un esfuerzo de investigación cualitativa iniciado en 2002, que identifica y describe las tecnologías emergentes con mayor potencial de impacto en la enseñanza, el aprendizaje, la investigación y la expresión creativa en el ámbito educativo global. Este volumen, elInforme Horizon 2009: Edición Iberoamericana, centra la investigación en los países de la región Iberoamericana (incluyendo a toda Latinoamérica, España y Portugal) y en el ámbito de la educación superior. ElInforme Horizon 2009: Edición Iberoamericana es el primero que ofrece esta contextualización regional y ha sido producido por el NMC y el eLearn Center de laUniversitat Oberta de Catalunya.The Horizon Report series is the most tangible result of the Horizon Project New Media Consortium, a qualitative research effort launched in 2002, which identifies and describes the emerging technologies with the greatest potential impact on teaching, learning, research and creative expression in global education. This volume, the Horizon Report 2009: Latin American Edition, focuses on research in the countries of the Latin American region (including Latin America, Spain and Portugal) and in the field of higher education. The Horizon Report 2009: Latin American Edition is the first one that offers this regional contextualization and has been produced by the NMC and the eLearn Center of the Universitat Oberta de Catalunya.Índice Resumen ejecutivo 2 ■ Tecnologías a observar ■ Tendencias significativas ■ Retos críticos ■ El Proyecto Horizon Horizonte de implantación: un año o menos Móviles. 8 ■ Visión general ■ Trascendencia en la docencia, el aprendizaje, la investigación o la expresión creativa ■ Ejemplos ■ Para saber más Computación en nube 12 ■ Visión general ■ Trascendencia en la docencia, el aprendizaje, la investigación o la expresión creativa ■ Ejemplos ■ Para saber más Horizonte de implantación: de dos a tres años Geo-todo 16 ■ Visión general ■ Trascendencia en la docencia, el aprendizaje, la investigación o la expresión creativa ■ Ejemplos ■ Para saber más El web personal 21 ■ Visión general ■ Trascendencia en la docencia, el aprendizaje, la investigación o la expresión creativa ■ Ejemplos ■ Para saber más Horizonte de implantación: de cuatro a cinco años Aplicaciones con conciencia semántica. 26 ■ Visión general ■ Trascendencia en la docencia, el aprendizaje, la investigación o la expresión creativa ■ Ejemplos ■ Para saber más Objetos inteligentes 30 ■ Visión general ■ Trascendencia en la docencia, el aprendizaje, la investigación o la expresión creativa ■ Ejemplos ■ Para saber más Metodología. 34 Consejo Asesor del Proyecto Horizon 2009. 3

Enhancement of the ν=5/2\nu = 5/2 Fractional Quantum Hall State in a Small In-Plane Magnetic Field

Using a 50-nm width, ultra-clean GaAs/AlGaAs quantum well, we have studied the Landau level filling factor $\nu = 5/2$ fractional quantum Hall effect in a perpendicular magnetic field $B \sim$ 1.7 T and determined its dependence on tilted magnetic fields. Contrary to all previous results, the 5/2 resistance minimum and the Hall plateau are found to strengthen continuously under an increasing tilt angle $0 < \theta < 25^\circ$ (corresponding to an in-plane magnetic field 0 $<$ $B_\parallel$ $< 0.8$ T). In the same range of $\theta$ the activation gaps of both the 7/3 and the 8/3 states are found to increase with tilt. The 5/2 state transforms into a compressible Fermi liquid upon tilt angle $\theta > 60^\circ$, and the composite fermion series [2+$p/(2p\pm1)$], $p =$ 1, 2 can be identified. Based on our results, we discuss the relevance of a Skyrmion spin texture at $\nu = 5/2$ associated with small Zeeman energy in wide quantum wells, as proposed by W$\acute{\text o}$js $et$ $al$., Phys. Rev. Lett. 104, 086801 (2010).Comment: 5+ pages, 3 figures, accepted for by Phy. Rev. Let