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Una pagina dimenticata della slavistica italiana. Le traduzioni di Francesco Drenig (Bruno Neri)
No full textLa nascita della slavistica italiana nei primi anni Venti del Novecento fu influenzata dalle condizioni geopolitiche dell'Europa centrale e orientale al termine della prima guerra mondiale. La rivoluzione bolscevica, la formazione di numerosi stati slavi dalla disgregazione dell'Impero Austro-ungarico, l'ambizione del governo italiano di acquisire un ruolo di primo piano nell'area danubiana e infine l’annessione all’Italia di zone etnicamente miste dell’ex Impero Asburgico, furono tutti fattori importanti che incoraggiarono l’espandersi degli interessi culturali italiani nell’Europa centro-orientale e favorirono la nascita della slavistica come disciplina accademica. Tra i protagonisti di questo sviluppo, vi furono anche alcuni intellettuali delle zone annesse, che grazie alla loro attività di reale mediazione culturale, favorirono una conoscenza più approfondita delle culture slave in Italia.
L’articolo è dedicato ad uno di questi mediatori, Francesco Drenig (Bruno Neri), fotografo e scrittore che operò a Fiume (Rijeka) tra le due guerre. Le sue traduzioni dal croato, serbo, sloveno, russo e ceco, uscirono nella rivista di Ferrara «Poesia ed arte» e in due periodici fiumani, «La Fiumanella» e «Delta». Malgrado abbiano avuto una durata effimera, queste riviste sono particolarmente importanti perché, in primo luogo, hanno ospitato testi dei più noti scrittori italiani e slavi: Saba, Prezzolini, Govoni, Marin, Stuparich, Blok, Majakovskij, Andrić, Krleža e altri; in secondo luogo è proprio la loro esistenza così breve a renderle delle preziose istantanee della vita culturale italiana degli anni Venti
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Implantable recording/stimulating neural interface for peripheral nervous system
No full textIn recent years many researchers have focused their attention on the development and on the
clinical experimentation of neural prosthesis [1] for hand amputees. Recent achievements in this
field have made this challenge easier with the introduction of innovative biocompatible materials
and the production of smart, light, artificial limbs characterized by lots of freedom degrees [2].
Despite such improvements, the communication between an implanted electrode and a prosthetic
limb is still an open issue, due to long cables and cumbersome electronic equipments that typically
separate them. In this contest it is very important the miniaturization of the electronic used to
acquire the neural signals from efferent fibers of the Peripheral Nervous System (PNS) and to
elicitate the afferent axons in order to restore the sensory feedback. Due to the weak amplitude of
neural signals, this kind of design is particularly critical. Indeed neural signals are drowned in a
noisy environment characterized by other biological electrical sources such as Electromyographic
(EMG) interferences which have amplitudes many orders of magnitude greater than that of the
neural signal and a bandwidth very close to them. Our group proposes an approach based on sigma
delta converters that reduces the complexity in the analog (implanted) part and shifts the critical
points on the digital side.
A novel bidirectional interface for implantable PNS electrodes has been conceived, designed and is
currently in the manufacturing phase after tape-out. In Fig.1 is depicted the system which is
composed of two main blocks: the analog implantable CMOS circuit and the digital system
controller, implemented on a FPGA. The recording unit (CMOS chip) contains a band-pass filter, a
sigma-delta modulator and a current-output stimulator. The decimation module of the sigma/delta
converter is located on an external digital device (implemented on a FPGA) which implements also
a highly selective filter to separate the neural signal (800 Hz – 8kHz) from electromyographic
interferences (100 Hz – 500 Hz). Such architecture was chosen to put in the implantable chip only
the most critical analog modules while, at the same time, having a robust digital communication
interface with the outside world. In this way, the digital communication protocol is more simple to
implement and more robust to interferences and the implantable chip does not contain power
hungry, sophisticated digital modules.
The implantable device was designed on an austriamicrosystems 0.35um process. The chip layout is
shown in Fig. 2. The chip contains 8 parallel readout channels and has a 4.1mm x 4.1mm die size.
Several parameters (amplifier gain, opamp bandwidths, etc.) are programmable. Power
consumption ranges from 20mW to 27.2mW depending on the operating mode. Each channel has
an overall precision (taking into consideration noise and errors of all the blocks in the acquisition
chain) of 10.4 bit. Fig. 3 shows the post-layout simulation results (including transient noise) for an
input trace obtained from real measurements of an electrode implanted in a rat sciatic nerve. The
original signal is largely affected by low-frequency noise (ECG and EMG) which is completely
removed by the system. The simulation includes the off-chip decimation module
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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