1,721,151 research outputs found
Adaptive type-partitioned garbage collection
No full textThesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.Includes bibliographical references (leaves 57-59).by Christopher Henry Rohrs.M.Eng
Refinement in a language with procedures and modules
No full textOur goal is to make the logic and language generally applicable. We therefore base our language on a general class of typed formula languages, demanding only the existence of simple constructs such as conjunction, negation and renaming, together with a consistent predicate semantics. The term language of HOL forms a language in our class.We construct from our class of formula languages a class of wide-spectrum languages supporting commands (including local variables), operation environments (providing support for procedural abstraction) and modules (providing support for data abstraction). We extend also the predicate semantics to a monotonic predicate transformer semantics for substitutions, from which we define extended domains for environments, modules and substitutions with procedural abstraction. We consider also the extension of the refinement ordering on predicate transformers to environments and modules. Our semantics is novel in not relying on an initial syntactic substitution or explicit variable environments to overcome problems associated with clashes between local and global state variables.Having fully considered refinement in the semantic domain, we present a consistent calculus of refinement for commands, environments and modules. We present an implementation of the calculus as an extension to the HOL theorem prover, demonstrating the refinement analogues of HOL rules, conversions, tactics and tacticals.</p
Sketch map of the route taken by Walker Bros prospecting party 1913 [cartographic material].
No full textMap showing route of prospecting party from Alice Springs to Wiluna with notes on vegetation, topography and well locations. Relief shown by hachures.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.map-rm2926; Library copy annotated in pencil
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
Nomenclatorial changes in Oriental Lygaeinae seed bugs (Hemiptera: Heteroptera: Lygaeidae)
No full textKondorosy, El Ő D, Lyal, Christopher Henry Coutts, Webb, Michael Donald (2006): Nomenclatorial changes in Oriental Lygaeinae seed bugs (Hemiptera: Heteroptera: Lygaeidae). Zootaxa 1383: 45-56, DOI: 10.5281/zenodo.27366
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
- …
