1,720,976 research outputs found
Research Horizons [Volume 19, Number 2, Winter 2002]
No full textResponding to Terrorism: The First Response - Researchers develop technologies to help rescue workers improve response in a chemical or biological attack.Implications for the War on Terrorism -
International affairs experts offer perspectives on foreign policy, homeland defense, vulnerabilities, ethics and European allies.Building Vulnerability Science -
Terrorism may change the way buildings are designed.Damage Assessment Around Ground Zero -
A Georgia Tech professor's advanced digital data system is expediting damage analyses in New York.Understanding DNA Damage -
Study suggests the environment surrounding DNA is a key to controlling charge transport and damage.A Model Environment -
Numerical models help hydropower industry reduce fish injury and improve water quality.Speed Racers -
Study will monitor driver behavior to determine the role of speed in crashes.A Step Toward "Atom Fiber Optics" -
World's smallest atom storage ring is first to guide ultra-cold neutral atoms.FACULTY PROFILE: A Passion for Success -
Regents Researcher Krishan Ahuja attributes his success to luck, but that's just another name for hard work
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
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
A critical review and simulation-based evaluation of green roof’s energy savings
No full textGreen roofs are often identified as energy-efficient techniques which, through their various mechanisms, contribute to a comfortable indoor environment. A significant number of published literature has investigated the thermal performance of a green roof under various climatic conditions and building parameters. A comprehensive literature review carried out in this research shows significant energy saving figures ranging from 12-60%. On the contrary, a simulation study on green roofs conducted in this research presents marginal energy-saving figures. The results of this research give a major insight into the thermal performance of the green roof based on the insulation thickness. It was observed that the insignificant results were due to comparable R-values of the original roof with the installed green roof assembly. This study, therefore, performs optimization to obtain the best set of design variables that could maximize the energy savings by green roofs on a well-insulated conventional roof. But the optimization was only able to achieve maximum energy savings ranging from -0.17-5.77%. With marginal energy savings figures, green roofs might look like a costly investment with high installation & operation costs.
However, a cost-benefit analysis of green roofs shows that the other numerous benefits of green roofs such as carbon sequestration, improved air quality, reduction of noise pollution, pleasing views & aesthetics, increase in property value, etc. contribute significantly to the less known economic benefits. These several benefits of green roofs can outweigh the initial investment cost by approximately 110 million USD over its life cycle for a case-specific study undertaken in this thesis. This research thus presents the other more beneficial aspects of green roofs as key factors in establishing it as a sustainable measure. It discusses an outlook beyond the cost comparison, as green roofs can outperform conventional roofs from an ecological and social point of view.M.S
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Whole-house mechanical ventilation in a mixed-humid climate
No full textAs building codes and green building programs require tighter home construction, the need for outdoor air ventilation to improve indoor air quality increases. Major improvements in building envelopes and duct systems have led to decreases in heating and cooling loads causing fewer HVAC system run-time hours, and increasing the probability for air stagnation within homes with poor outdoor air ventilation. ASHRAE Standard 62.2 quantifies the amount of whole-house ventilation required based on the number of occupants and the square footage of conditioned space, but leaves the design of the ventilation system up to the mechanical engineer or HVAC contractor. In 2010, ASHRAE began requiring flow testing for confirmation of outdoor air ventilation rates, yet few municipalities and green building programs have adopted the new standard.
Builders in mixed-humid climates are forced to balance the need for outdoor air ventilation with the upfront costs for mechanical ventilation systems, and the potential for increased humidity loads and energy costs associated with mechanical ventilation strategies. One common solution employed in the southeastern United States involves a central fan integrated supply (CFIS) ventilation system controlled with an air-cycler for minimum run-time to meet ASHRAE Standard 62.2. While this system has been tested and proven to meet design ventilation rates, those tests were often conducted on homes constructed by well trained builders receiving strong oversight from building scientists and the design ventilation rates were not always ASHRAE compliant.
The following report analyzes whether the CFIS ventilation system with air-cycler controller provides ventilation meeting ASHRAE Standard 62.2 when employed by builders with minimal training and support.M
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