1,721,790 research outputs found
Oral history interview with Matthew Lee
No full textOral history interview with Matthew Lee conducted in person on November 7, 2024
Flexible signal processing algorithms for wireless communications
No full textThesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.Includes bibliographical references (p. 129-132).by Matthew Lee Welborn.Ph.D
Water service policy as a growth management technique : experiences in the Denver metro area
Full text linkThesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1980.MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH.Includes bibliographical references.by Matthew Lee White.M.C.P
CORNERSTONE OF ZION: THE ARCHAEOLOGY OF THE LATTER-DAY SAINTS
Full text link(Statement of Responsibility) by Matthew Lee Andersen(Thesis) Thesis (B.A.) -- New College of Florida, 2014RESTRICTED TO NCF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE(Bibliography) Includes bibliographical referencesThis bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.Faculty Sponsor: Baram, Uz
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
Assessing trends and associated uncertainties in global ocean chlorophyll using Bayesian spatio-temporal techniques
No full textClimate change is predicted to affect oceanic phytoplankton abundance with impacts on fisheries and feedbacks on climate. The presence, magnitude, and even direction of long-term trends in phytoplankton abundance over the past few decades is still debated in the literature. The challenges affecting these studies include the low signal-to-noise ratio, the large degree of natural variability, and the shortness of the satellite ocean colour record, which is itself a composite of multiple shorter records. Previous work, however, has typically focused on using linear temporal models to determine the presence of trends in chlorophyll, where each grid cell is considered independently. To improve the assessment of trends a statistical model that explicitly models the relationship between neighbouring grid cells is used. A hierarchical Bayesian spatio-temporal model is fitted to global ocean colour data (1997 – 2013). This results in a notable improvement in accuracy in model fit, an order of magnitude smaller global trend, and larger uncertainty when compared to a model without spatial correlation. To help separate long-term trends from natural variability, trends from coupled physical-biogeochemical models are incorporated in to the model as Bayesian priors. The introduction of priors tends to reduce the magnitude and uncertainty of trend estimates, although the amount is deemed to be not statistically different from zero in any of the regions considered. Finally, the model is used to analyse the effect of taking into account discontinuities on estimated chlorophyll trends. The discontinuities considered are those relating to the launch and termination of individual ocean colour sensors. Considering discontinuities leads to statistically different trends in most regions, which can have a reversed sign as well as increased uncertainty. The improvement in trend estimate accuracy, and the more realistic representation of their uncertainty, emphasizes the solution that spatio-temporal modelling offers for studying global long-term change
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
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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