I review the current knowledge of high-energy emission from extragalctic jets. First I discuss γ-ray emission from blazars, which provides us numerous precious information on the innermost portions of the relativistic jets. I describe the constraints on the dynamics of the jet from the subpc to the pc scale provided by recent VLBI studies of TeV sources, together with the modelling of the emiss...

Background: Mental workload is one of the factors that influence individuals’ performance in the work environment as well as their efficiency and productivity. This study aimed to evaluate the effectiveness of the Rating Scale Mental Effort (RSME) for mental workload in nurses. Materials and Methods: This study was descriptive and cross-sectional conducted on 75 nurses. For assessment ...

In this work we present preliminary results regarding a proof-of-concept project which aims to provide tools for mapping the amount of solar radiation reaching surfaces of objects, accounting for obstructions between objects themselves. The implementation uses the NASA World Wind development platform (NASA WW) to model the different physical phenomena that participate in the process, from the c...

The main aim of this paper is to investigate the market penetration and share of different wind turbine concepts during the years 1998-2002, a period when the increase in the wind power capacity is starting to mark an abrupt evolution (more than two GW per year). A detailed overview is performed based on suppliers market data and concept evaluation for each individual wind turbine type sold by ...

Michael Shao ([email protected], Jet Propulsion Laboratory), Geoff Marcy (UC Berkeley), Joseph H. Catanzarite (JPL), Stephen J. Edberg (JPL), Alain Léger (Institut d’Astrophysique Spatiale), Fabien Malbet (Laboratoire d'Astrophysique de l'Observatoire de Grenoble), Didier Queloz (Observatoire de Genève), Matthew W. Muterspaugh (UC Berkeley),Charles Beichman (NExScI), Debra A. Fischer (S...

methods this cross-sectional study was conducted on 293 nurses working in 24 wards of baqiyatallah hospital in tehran, iran, in 2016. the sampling method was stratified random sampling. data were collected using a self-administered questionnaire, which was classified into 4 subtitles: individual and organizational characteristics, perceived subjective, objective workloads, and some patient safe...

In Colombia, ethnic and cultural diversity is conceived by the government to be a social right. Such diversity finds expression, among other ways, in a large number of indigenous languages, which have been kept alive for centuries. However, efforts toward conservation and preservation of these languages have generally fallen short. This is the case for the Nasa Yuwe language, spoken by the Nasa...