130,379 research outputs found
L'insegnamento del cinema presso il DAMS dell'Università di Bologna
No full textNei suoi cinquant'anni di esistenza il Dams di Bologna ha acquisito una riconoscibilità che ne ha fatto un modello per le iniziative simili sorte in altre università italiane, ma è stato anche una sigla la cui fama – complice la temperie culturale e politica bolognese tra anni Settanta e Ottanta – ha superato i confini degli addetti ai lavori per allargarsi alle manifestazioni della cultura popolare.
L'insegnamento del cinema, al contrario di quello che potrebbe suggerire un facile senno di poi, non era al centro del disegno iniziale del Dams, e per un tempo relativamente lungo, come vedremo, è stato messo in ombra da altre discipline. Lo scopo di questo capitolo è quello di ricostruire i tratti fondativi di quel progetto per comprendere il ruolo che gli insegnamenti di cinema hanno avuto al suo interno. L’arco temporale che prendiamo in esame è suddivisibile in due fasi: la prima, che possiamo definire di nascita/insediamento, va dalla progettazione/fondazione del 1970/71 fino alla fine del decennio; la seconda, di assestamento istituzionale, si protrae dai primi anni Ottanta, in parziale coincidenza con la riforma universitaria, alla fine del primo ciclo di dottorato, istituito nell'a.a. 1983/84
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Progression to high grade pancreatic duct adenocarcinomas could be related to p53 tumor suppressor gene alterations
No full textCompact, multi-channel, electronic interface for PNS recording and stimulation
No full textA multi-channel system for neural signal recording/stimulation is presented. The system is split on two devices: an implantable High Voltage (HV) CMOS integrated circuit (IC) hosting a sigma delta modulator, together with a low noise preamplifier/prefilter and a digital platform for sigma delta decimation/control implemented on a FPGA. This innovative approach guarantees a robust communication link while minimizing the blocks to be implanted, saving power and area. The recording unit exhibits an IRN = 2.12uVrms in 800Hz-8kHz bandwidth, a programmable gain in the range 45.4dB-58dB and a 14-bit A/D conversion. The IC hosts also a current-mode stimulator able to deliver currents in the range of hundreds of microampere to electrodes with impedances up to 100kΩ
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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