980 research outputs found
Holographic Tunneling Wave Function
The Hartle-Hawking wave function in cosmology can be viewed as a decaying
wave function with anti-de Sitter (AdS) boundary conditions. We show that the
growing wave function in AdS familiar from Euclidean AdS/CFT is equivalent,
semiclassically and up to surface terms, to the tunneling wave function in
cosmology. The cosmological measure in the tunneling state is given by the
partition function of certain relevant deformations of CFTs on a locally AdS
boundary. We compute the partition function of finite constant mass
deformations of the O(N) vector model on the round three sphere and show this
qualitatively reproduces the behaviour of the tunneling wave function in
Einstein gravity coupled to a positive cosmological constant and a massive
scalar. We find the amplitudes of inhomogeneities are not damped in the
holographic tunneling state.Comment: 22 pages, 5 figures, Revisions according to the JHEP edito
Simulation of a Transparent Dynamic Insulation window system for energy efficiency gains in office spaces
Acceso a la información, pilar básico para lograr calidad de vida en las personas discapacitadas
In this text we present a description of the situation visualized in the city of Eldorado, Province of Misiones, Argentina, with regard to the problematic of disabled people (from here on PD) and the need of the implementation of an appropiate public policy of communication about their rights. The initial premise of this work is that if the public policy in charge of communicate about handicapped people rights is carried out in an appropiate way, it will benefit them with a better life quality. This would be favourable to them because they would achieve autonomy and real inlusion.En este texto presentamos una descripción de la situación que se visualiza en la ciudad de Eldorado, Provincia de Misiones, Argentina, con respecto a la problemática de las personas discapacitadas (de aquí en adelante PD) y de la necesidad de la implementación de políticas públicas adecuadas de comunicación
sobre los derechos de las mismas. La premisa de partida de este trabajo es que si las políticas públicas encargadas de comunicar sobre los derechos de las personas discapacitadas se ejecutaran en forma adecuada, redundarían en una mejora de calidad de vida de estas personas. Esto favorecería a que las mismas pudieran lograr mayor autonomía e inclusión real
El caso de Eldorado; Misiones, Argentina: El acceso a la información y el conocimiento de los derechos permite una mejor calidad de vida a las personas discapacitadas
En este texto presentamos una descripción de la situación que se visualiza en la
ciudad de Eldorado, Provincia de Misiones, Argentina, con respecto a la
problemática de las personas discapacitadas (de aquí en adelante PD) y de la
necesidad de la implementación de políticas públicas adecuadas de comunicación
sobre los derechos de las mismas. La premisa de partida de este trabajo es que si
las políticas públicas encargadas de comunicar sobre los derechos de las
personas discapacitadas se ejecutaran en forma adecuada, redundarían en una
mejora de calidad de vida de estas personas. Esto favorecería que las
mismas pudieran lograr mayor autonomía e inclusión realIn this text we present a description of the situation visualized in the city of
Eldorado, Province of Misiones, Argentina, with regard to the problematic of
disabled people (from here on PD) and the need of the implementation of an
appropiate public policy of communication about their rights. The initial premise of
this work is that if the public policy in charge of communicate about handicapped
people rights is carried out in an appropiate way, it will benefit them with a better
life quality. This would be favourable to them because they would achieve
autonomy and real inclusio
Domain walls inside localised orientifolds
The equations of motion of toroidal orientifold compactifications with fluxes
are in one-to-one correspondence with gauged supergravity if the orientifold
(and D-brane) sources are smeared over the compact space. This smeared limit is
identical to the approximation that ignores warping. It is therefore relevant
to compare quantities obtained from the gauged supergravity with the true 10d
solution with localised sources. In this paper we find the correspondence
between BPS domain walls in gauged SUGRA and 10D SUGRA with localised sources.
Our model is the simplest orientifold with fluxes we are aware of: an O6/D6
compactification on T^3/Z_2 in massive IIA with H_3-flux. The BPS domain walls
correspond to a O6/D6/NS5/D8 bound state. Our analysis reveals that the domain
wall energy computed in gauged SUGRA is unaffected by the localisation of the
O6/D6 sources.Comment: 26 pages, 1 figur
Investigating the origin of breakage of panes subjected to blast loading by acoustic emission testing
The Fraunhofer EMI shock-tube facility “Blast-STAR” is used to simulate blast loadings from high explosive detonations similar to realistic conditions. Mainly tests on explosion-resistant safety glazing and façades are carried out. Due to the extreme conditions during the test, it is not trivial to accurately analyze the specimen reaction and in particular to determine the start of breakage of the glass pane. Usually high-speed footage is used for this purpose. Since the size of tested elements is increasing, the determination of place and time of breakage becomes more challenging. Monk and Clubley successfully used piezo transducers in an alternative approach to measure the shock wave originating from glass breakage for detecting the point of initial cracking. They used long-duration blasts, characterized by small peak pressures and a long positive phase duration. In contrast, the blast waves generated with the “Blast-STAR” are characterized by higher peak pressures and a considerable shorter positive phase. The presented work examines the applicability of the approach for the “Blast-STAR” experiments and the accuracy compared to video recordings. Within the paper five shock tube tests are described and evaluated. The results and the experimental set-up are discussed and an outlook for further research is given
Eco-rentabiliteit: rapport voor de Hollandse Koopmansbank (thans SNS Asset Management)
Onderzoek uitgaande van de stelling dat “milieu-actieve bedrijven gemiddeld of beter dan gemiddeld scoren op traditionele rendementscriteria”. Allereerst is nagegaan welke theoretische concepten beschikbaar zijn om een positief verband tussen milieu- en financieel rendement te onderbouwen. Bij een gegeven stand van de techniek ligt het in de lijn der verwachting dat verdergaande milieumaatregelen voor een bedrijf tot hogere kosten leiden.
Indien er daarnaast geen specifieke milieu-opbrengsten zijn, is het verband tussen milieuvriendelijkheid en rendement negatief. Milieu-innovatie biedt in theorie de mogelijkheid om aan dit dilemma te ontsnappen. Praktische hulpmiddelen voor milieu-innovatie zijn "pollution prevention" en "eco-efficiency". Het vermijden van milieurisico's en het verbeteren van milieuprestaties biedt nieuwe marktkansen
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