1,720,987 research outputs found
Identificazione di proteine che legano “in vitro” la 3’UTR di RNA messaggeri per l’istone H3.3
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Esiste una correlazione tra il valore del rapporto K/R nelle protammine e la loro modalità di legame al DNA?
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EduSAT: An Italian space agency outreach program
No full textIn the 2005, the Italian Space Agency (ASI) proposed a program to launch in orbit an educational satellite named EduSAT, with the main goal to promote space education among high school students and to support scientific careers of PhD and university students. Two years later, the EduSAT project started under the ASI coordination and funding. The EduSAT design, manufacturing, launch and operation in orbit has been committed to the Group of Astrodynamics of the "Sapienza" University of Roma (GAUSS), on the basis of this previous experience, the UNISAT program (University Satellite). In the framework of this Italian university program, four student-built satellites have been launched, respectively in 2000, 2002, 2004 and 2006, from Baykonour Cosmodrome, with DNEPR Space Launch System. The educational activity involving high school students has been committed to IMT srl with the contribution of the University of Roma TorVergata. High school students are provided with 2 satellite models, Basic Satellite Training (DTB) and Advanced Satellite Training (DTS), that form the basis for teaching. Students are also involved in the development of a small payload which will be hosted on board EduSAT. The selected payload is a sun sensor. The EduSAT microsatellite is scheduled to be launched in April 2010 with DNEPR launch vehicle. This paper deals with a project overview, satellite architecture and main subsystems description, high school students payload and educational program organization
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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