The F-18 systems research aircraft facility

To help ensure that new aerospace initiatives rapidly transition to competitive U.S. technologies, NASA Dryden Flight Research Facility has dedicated a systems research aircraft facility. The primary goal is to accelerate the transition of new aerospace technologies to commercial, military, and space vehicles. Key technologies include more-electric aircraft concepts, fly-by-light systems, flush airdata systems, and advanced computer architectures. Future aircraft that will benefit are the high-speed civil transport and the National AeroSpace Plane. This paper describes the systems research aircraft flight research vehicle and outlines near-term programs

Greening Bonnaroo: exploring the rhetoric and reality of a sustainable festival through micro-ethnographic methods

This research revealed that the greening policies of the Bonnaroo Festival are translated into sustainable event practice through: educational activities for volunteers and festival-goers, the creation of spaces of hyper-sustainability within the event and the embedding of green issues into the core values of the event. By using micro-ethnographic methods within a qualitative case study to compare the rhetoric of the festival with the practices occurring within it, the researchers have been able to make a number of recommendations for continuing and deepening the greening policies of this event, including a need to increase the scope and influence of the spaces of hyper-sustainability within the festival so as to broaden their localised impact and increasing direct engagement with festival goers on environmental issues

Flight control system design factors for applying automated testing techniques

Automated validation of flight-critical embedded systems is being done at ARC Dryden Flight Research Facility. The automated testing techniques are being used to perform closed-loop validation of man-rated flight control systems. The principal design features and operational experiences of the X-29 forward-swept-wing aircraft and F-18 High Alpha Research Vehicle (HARV) automated test systems are discussed. Operationally applying automated testing techniques has accentuated flight control system features that either help or hinder the application of these techniques. The paper also discusses flight control system features which foster the use of automated testing techniques

Unemployment and International Trade: The Effects of Minimum Wages and Non-Traded Goods in Models representing Western Industrialized Countries and China (in German)

In this paper we investigate "integrated equilibria" of two-country models. Extending the basic framework non-traded goods as well as minimum wages are introduced and their effects on the models' results are studied. Finally, the consequences of three types of labor "shocks" are analyzed

Initial flight qualification and operational maintenance of X-29A flight software

A discussion is presented of some significant aspects of the initial flight qualification and operational maintenance of the flight control system softward for the X-29A technology demonstrator. Flight qualification and maintenance of complex, embedded flight control system software poses unique problems. The X-29A technology demonstrator aircraft has a digital flight control system which incorporates functions generally considered too complex for analog systems. Organizational responsibilities, software assurance issues, tools, and facilities are discussed

Abort Flight Test Project Overview

A general overview of the Orion abort flight test is presented. The contents include: 1) Abort Flight Test Project Overview; 2) DFRC Exploration Mission Directorate; 3) Abort Flight Test; 4) Flight Test Configurations; 5) Flight Test Vehicle Engineering Office; 6) DFRC FTA Scope; 7) Flight Test Operations; 8) DFRC Ops Support; 9) Launch Facilities; and 10) Scope of Launch Abort Flight Tes

Unemployment and International Trade: The Effects of Minimum Wages and Non-Traded Goods in Models representing Western Industrialized Countries and China (in German)

In this paper we investigate "integrated equilibria" of two-country models. Extending the basic framework non-traded goods as well as minimum wages are introduced and their effects on the models' results are studied. Finally, the consequences of three types of labor "shocks" are analyzed.

COUNTRY-OF-ORIGIN LABELING OF BEEF PRODUCTS: U.S. CONSUMERS' PERCEPTIONS

In 2002, Chicago and Denver consumers were surveyed and participated in an experimental auction to elicit willingness to pay for country-of-origin labeling (COOL) of beef. Survey results indicate the majority of consumers (73%) were willing to pay an 11% and 24% premium for COOL of steak and hamburger, respectively. In the auction, consumers were willing to pay a 19% premium for steak labeled “"U.S.A. Guaranteed: Born and Raised in the U.S.”" Food-safety concerns, preferences for labeling source and origin information, a strong desire to support U.S. producers, and beliefs that U.S. beef was of higher quality were reasons consumers preferred COOL.Consumer/Household Economics,

Características Físicas de Plumas Atrapadas por el Fondo

La descarga de estuarios y ríos sobre la plataforma continental forma plumas que transportan aguas menos salinas conjuntamente con sedimentos, nutrientes y materiales antropogénicos. Aunque se ha avanzado considerablemente en el conocimiento de la dinámica de plumas superficiales (confinadas a las capas superiores del océano), aquellas atrapadas por el fondo (que ocupan toda la columna de agua) han recibido mucha menos atención. Debido a que estas últimas son generadas por grandes descargas, su impacto en el ecosistema oceánico es mayor. Este trabajo se propone como objetivo ampliar estudios previos analizando la naturaleza de los procesos físicos básicos asociados a la penetración longitudinal y transversal y al transporte de flotabilidad de plumas de gran escala mediante el empleo de modelos oceánicos implementados en un dominio simplificado. En el mismo se analiza la sensibilidad de esas características ante variaciones ambientales (pendiente de la plataforma, fricción de fondo, difusión lateral). Las características de la pluma difieren fundamentalmente aguas abajo (D) y aguas arriba (U) de la descarga. El transporte de flotabilidad en la región D disminuye considerablemente con el aumento de pendiente, siendo compensado por un incremento correspondiente en la región U. Un incremento de la pendiente retrae la pluma hacia la costa en la región D, mientras que expande la pluma transversalmente a la costa en la zona U. La expansión lateral de la pluma en la superficie se halla controlada mayormente por la fricción de fondo. Los resultados muestran además una marcada dependencia del transporte de flotabilidad con la mezcla lateral para todas las pendientes, siendo mayor el transporte en la región D a medida que disminuye la mezcla.Fil: Sitz, Lina Elisabet. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Palma, Elbio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur; ArgentinaFil: Matano, Ricardo. State University of Oregon; Estados Unido

Bulgarien: ökonomische Entwicklung und wirtschaftspolitische Strategie

In diesem Artikel werden Massnahmen und Probleme der frühen Transfor-mationsphase, die wirtschaftliche Entwicklung auch im Yergleich zu anderen mittel- und osteuropäischen Ländern skizziert und diskutiert. Als zweiter Schwerpunkt werden die Wirkungen der Finanz- und Staats-schuldenkrise auf Bulgarien und die wirtschaftspolitischen Reaktionen darauf analysiert. (authors' abstract