1,721,299 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
DSP algorithms and VLSI system design
No full textS.34-41Digital signal processing (DSP) is steadily gaining importance, especially since signal processors and corresponding modules have become commercially available. While theoretical foundations of the digital signal processing were laid down years ago, it was the arrival of very-large-scale-integration (VLSI) technologies that has made economic realization of signal processing systems possible. Design of such systems, however, presents great difficulties due to its high complexity. Actually, an imaginary "good" designer of a DSP system integrated on a silicon chip should possess interdisciplinary knowledge of information sciences, computer architecture, signal theory, communications, network theory, circuit design, solid-state physics, device modelling and semiconductor technology. In addition, experience in design for testability, measurement techniques know-how and capability of tackling all computer-aided-design (CAD) tools would be indispensable as well. In practice, all these aspects are handled by a team of specialized designers who cover all levels of design hierarchy
CMOS-Bildsensorik
No full textS.141-146 : Lit.Die Fortschritte der CMOS-Technologie haben die Integration von mikroelektronischen Systemen mit Millionen von Transistoren auf einem Chip ermöglicht. Die jetzigen Strukturverkleinerungen, die tief in den Sub-µm-Bereich reichen, machen die Realisierung von Halbleitersensoren möglich, die neuerdings mit den klassischen CCD-Bildsensoren konkurrieren können. Im Gegensatz zu diesen ist es aber möglich, auch Schaltungen zusammen mit Bildsensorik auf einen einzigen Chip zu integrieren. Somit steigt einerseits der Integrationsgrad, andererseits ergeben sich aber auch andere Eigenschaften, die Flexibilität und Leistung von CMOS-Bildsensoren zu steigern
The analog MOS filter solution
No full textS.5The paper was a result of my PhD thesis research from 1974 to 1977. When I started my work at the Department of Electrical Engineering and Computer Science of the University of California, Berkeley, nobody believed that you could realize analog integrated circuits using MOS technologies (actually, all analog integrated circuits realized at that time were using bipolar technologies). It was the Department of EECS in Berkeley that pioneered the analog MOS (and later CMOS) design. This work was carried out by a group guided by Berkeley professors Paul R. Gray, R. W. Brodersen, and David A. Hodges. They created an environment that attracted gifted young engineers from all over the world who generated a number of new ideas. It was this work that laid down the foundations of analog CMOS design.8Nr.
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
- …
