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Experimental study of a flameless gas turbine combustor

This paper presents experimental data, performed at atmospheric conditions, on a novel flameless combustor with application to gas turbine engines. Flameless combustion is characterized by distributed flame and even temperature distribution achieved at conditions of high preheat air temperature and sufficiently large amounts of recirculating low oxygen concentration exhaust gases. Extremely low em

First steps towards a computational theory of autism

A computational model with three interacting components for context sensitive re-inforcement learning, context processing and automation can autonomously learn a focus attention and a shift attention task. The performance of the model is similar to that of normal children, and when a single parameter is changed, the performance on the two tasks approaches that of autistic children.

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Abstract in French L’approche phénoménologique induit le chercheur vers une collecte de données aussi libre que possible, évitant toute construction de sens de la part du chercheur tant au niveau des questions que des réponses. Il s’agit d’obtenir, de la part du sujet invité à une participation active à la recherche, un texte exprimé d’une facon aussi libre et spontanée que possible, dévoilant ses

Instruments for a European Extremely Large Telescope: the challenges of designing instruments for 30- to 100-m telescopes

Designs for Extremely Large Telescopes (ELTs) are quite well advanced,but the requirements of instruments have had limited impact. Sinceprovision of a suitable environment for instruments is a critical aspectof all telescopes, we outline some well-known and some less-appreciatedchallenges of designing instruments for ELTs. A wide-field spectrometer(WFSPEC) with ~10 arcmin field-of-view, probably w

Molecular cloning and spatiotemporal expression of prostaglandin F synthase and microsomal prostaglandin E synthase-1 in porcine endometrium

Endometrial prostaglandins (PGs) and the PGE2/PGF2alpha ratio play an important role in regulating the estrous cycle and establishment of pregnancy. The enzymes downstream of cyclooxygenase-2 may determine the PGE2/PGF2alpha ratio in the porcine uterus. Thus, we have cloned porcine PGF synthase (PGFS) and microsomal PGE synthase-1 (mPGES-1) and characterized their expression in porcine endometrium

Determinants of poverty in Lao DPR

Lao PDR has been relatively successful in raising incomes and reducing poverty since the early 1990s. However, the gains in terms of poverty reduction are unevenly distributed across regions and population groups. This paper uses a detailed household survey data set to examine the determinants of income and poverty in Lao PDR. The results suggest that household size, dependency ratios, education,