1,164 research outputs found

    The impact on language teachers of trends in the literature on language teaching and learning: A questionnaire-based study involving teachers of English as an additional language

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    I report here on specific aspects of a survey of a sample of 93 teachers of English as an additional language from five different countries who completed a questionnaire that included questions relating to objectives specification and the inclusion of coherence, cohesion and genre in their teaching. The data collected suggest that although literature on language teaching and learning appears to have had some impact on the beliefs and practices of these language teachers, that impact has, in general, been a superficial one

    Book reviewed: Parrish, B. (2019). Teaching adult English language learners: A practical introduction.

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    I reviewed this book for the Modern English Teacher Journal published by Pavilion Publishers My Introduction to the book was: This book includes a collection of key Adult English Language Learning (AELL) issues that form the core of many teaching AELL programmes or courses. Although I have been a language teacher trainer and mentor for almost twenty years, I feel that for me this book offers tremendous value in terms of the depth of understanding of issues that Parrish relays, and the useful refreshing approaches and suggestions that are made about core aspects of ELT. The explanations, tasks and resources included in each chapter and the addition of current practices related to some shifts in learner groups, such as an increase in low literacy learners and advocating for learners by empowering them, enriches the content

    Historical problem areas lessons learned

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    Historical problem areas in space transportation propulsion technology are identified in viewgraph form. Problem areas discussed include materials compatibility, contamination, pneumatic/feed system flow instabilities, instabilities in rocket engine combustion and fuel sloshing, exhaust plume interference, composite rocket nozzle failure, and freeze/thaw damage

    Historical problem areas: Lessons learned for expendable and reusable vehicle propulsion systems

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    The following subject areas are covered: expendable launch vehicle lessons learned, upper stage/transfer vehicle lessons learned, shuttle systems - reuse, and reusable system issues and lessons learned

    Cryogenic Fluid Management Experiment (CFME) trunnion verification testing

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    The Cryogenic Fluid Management Experiment (CFME) was designed to characterize subcritical liquid hydrogen storage and expulsion in the low-g space environment. The CFME has now become the storage and supply tank for the Cryogenic Fluid Management Facility, which includes transfer line and receiver tanks, as well. The liquid hydrogen storage and supply vessel is supported within a vacuum jacket to two fiberglass/epoxy composite trunnions which were analyzed and designed. Analysis using the limited available data indicated the trunnion was the most fatigue critical component in the storage vessel. Before committing the complete storage tank assembly to environmental testing, an experimental assessment was performed to verify the capability of the trunnion design to withstand expected vibration and loading conditions. Three tasks were conducted to evaluate trunnion integrity. The first determined the fatigue properties of the trunnion composite laminate materials. Tests at both ambient and liquid hydrogen temperatures showed composite material fatigue properties far in excess of those expected. Next, an assessment of the adequacy of the trunnion designs was performed (based on the tested material properties)

    Das EU-Budget 2007 bis 2013 : keine Einigung in Sicht

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    Der Finanzrahmen für die Programmperiode 2007 bis 2013 steht angesichts knapper Haushaltskassen weiterhin in der öffentlichen Debatte. Bei dieser Diskussion sollte nicht allein das Ausgabenvolumen und hierbei insbesondere das Volumen der Strukturförderung im Mittelpunkt stehen. Auch auf der Einnahmenseite der Europäischen Union besteht Handlungsbedarf. So ist z. B. eine Reform der derzeitigen Korrekturmechanismen und hierbei insbesondere des so genannten „Britenrabatts“ überfällig.Finanzpolitik; Budgetrestriktion; Öffentliche Finanzplanung; EU-Staaten

    Behavior of fluids in a weightless environment

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    Fluid behavior in a low-g environment is controlled primarily by surface tension forces. Certain fluid and system characteristics determine the magnitude of these forces for both a free liquid surface and liquid in contact with a solid. These characteristics, including surface tension, wettability or contact angle, system geometry, and the relationships governing their interaction, are discussed. Various aspects of fluid behavior in a low-g environment are then presented. This includes the formation of static interface shapes, oscillation and rotation of drops, coalescence, the formation of foams, tendency for cavitation, and diffusion in liquids which were observed during the Skylab fluid mechanics science demonstrations. Liquid reorientation and capillary pumping to establish equilibrium configurations for various system geometries, observed during various free-fall (drop-tower) low-g tests, are also presented. Several passive low-g fluid storage and transfer systems are discussed. These systems use surface tension forces to control the liquid/vapor interface and provide gas-free liquid transfer and liquid-free vapor venting

    Study of contamination of liquid oxygen by gaseous nitrogen First quarterly report, 1 Jul. - 30 Sep. 1964

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    Analytical model development for contamination study of liquid oxygen by gaseous nitroge

    Cryogenic fluid management experiment

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    The cryogenic fluid management experiment (CFME), designed to characterize subcritical liquid hydrogen storage and expulsion in the low-q space environment, is discussed. The experiment utilizes a fine mesh screen fluid management device to accomplish gas-free liquid expulsion and a thermodynamic vent system to intercept heat leak and control tank pressure. The experiment design evolved from a single flight prototype to provision for a multimission (up to 7) capability. A detailed design of the CFME, a dynamic test article, and dedicated ground support equipment were generated. All materials and parts were identified, and components were selected and specifications prepared. Long lead titanium pressurant spheres and the flight tape recorder and ground reproduce unit were procured. Experiment integration with the shuttle orbiter, Spacelab, and KSC ground operations was coordinated with the appropriate NASA centers, and experiment interfaces were defined. Phase 1 ground and flight safety reviews were conducted. Costs were estimated for fabrication and assembly of the CFME, which will become the storage and supply tank for a cryogenic fluid management facility to investigate fluid management in space

    Öffentliche Infrastruktur und kommunale Finanzen

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    In den letzten Jahren konnte ein massiver Einbruch bei den kommunalen Investitionen in Ostdeutschland beobachtet werden. Im vorliegenden Beitrag wird gezeigt, dass dieser Einbruch unabhängig von der Wirtschaftskraft der Kommunen stattfand und in engem Zusammenhang mit dem Rückgang der Zuweisungen an die Kommunen betrachtet werden muss. Trotz erfolgter Konsolidierungsbemühungen ist zudem immer noch ein zu hoher kommunaler Personalbestand feststellbar, woraus sich weiterer Handlungsbedarf ergibt.Infrastruktur; Gemeindefinanzen; Kommunale Investition; Haushaltskonsolidierung; Personalbestand; Neue Bundesländer
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