Results 61 to 70 of about 3,009 (150)

Development Status of the L75: A Brazilian Liquid Propellant Rocket Engine

open access: yesJournal of Aerospace Technology and Management, 2014
This paper provides an overview of the design and development process of the L75 Liquid Propellant Rocket Engine (LPRE). Being developed at Institute of Aeronautics and Space (IAE), it is the first Brazilian open-cycle liquid rocket engine pressurized by
Daniel Soares de Almeida   +1 more
doaj  

WMAPping inflationary physics

open access: yes, 2003
We extract parameters relevant for distinguishing among single-field inflation models from the Wilkinson Microwave Anisotropy Probe (WMAP) data set, and from a combination of the WMAP data and seven other Cosmic Microwave Background (CMB) experiments. We
Kinney, William H.   +3 more
core   +1 more source

Analysis of liquid-propellant rocket engines designed by F. A. Tsander [PDF]

open access: yes
The development of the oxygen-gasoline OR-2 engines and the oxygen-alcohol GIRD-10 rocket engine is described. A result of Tsander's rocket research was an engineering method for propellant calculation of oxygen-propellant rocket engines that determined ...
Dushkin, L. S., Moshkin, Y. K.
core   +1 more source

Future space transport [PDF]

open access: yes
Prospects for the mastery of space and the basic problems which must be solved in developing systems for both manned and cargo spacecraft are examined. The achievements and flaws of rocket boosters are discussed as well as the use of reusable spacecraft.
Chekalin, S. V., Grishin, S. D.
core   +1 more source

Personalized Fuzzy Text Search Using Interest Prediction and Word Vectorization

open access: yes, 2017
In this paper we study the personalized text search problem. The keyword based search method in conventional algorithms has a low efficiency in understanding users' intention since the semantic meaning, user profile, user interests are not always ...
Gao, Tianmeng   +3 more
core  

The Integrated Diffuse X-ray Emission of the Carina Nebula Compared to Other Massive Star-forming Regions

open access: yes, 2011
The Chandra Carina Complex Project (CCCP) has shown that the Carina Nebula displays bright, spatially-complex soft diffuse X-ray emission. Here we `sum up' the CCCP diffuse emission work by comparing the global morphology and spectrum of Carina's diffuse
Broos, Patrick S.   +5 more
core   +1 more source

La demanda de importaciones españolas. Un enfoque VECM desagregado [PDF]

open access: yes, 1998
En este trabajo se desarrolla un enfoque de modelización desagregado para las importaciones españolas a partir de modelos VECM. La utilización de datos trimestrales permite entrar en mayor detalle en la dinámica de corto plazo. Se distinguen cuatro tipos
Espasa, Antoni, Martínez, J. Manuel
core   +1 more source

Relación entre la Tasa de Intervención del Banco de la República y las Tasas del Mercado: Una Exploración Empírica [PDF]

open access: yes
En esta nota se reportan los resultados de un ánalisis empírico de la relación entre la tasa de intervención del Banco de la República con las tasas de interés del mercado.
Juan Manuel Julio
core  

Dual and multiple exchange rate systems in developing countries : some empirical evidence [PDF]

open access: yes
The authors examine the determinants of the parallel exchange rate for a cross-country sample of developing countries. The sample includes countries in which the parallel exchange rate is official (dual exchange rate systems) as well as those in which it
Ghei, Nita, Kiguel, Miguel A.
core  

A Provably Correct Sampler for Probabilistic Programs [PDF]

open access: yes, 2015
Hur, Chung-Kil   +3 more
core   +1 more source

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