1,721,042 research outputs found
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
Development of Novel Biosensing Platforms using Metal, Metal-Insulator-Metal (MIM) and Quantum Materials
No full textRapid and accurate testing of easily transmissible diseases is essential to prevent
extensive breakouts, identify infected individuals for timely treatment, and curb
transmission by taking suitable measures. With the advancement of nanotechnology,
biosensors are becoming an indispensable tool in drug development, biomedicine,
disease monitoring, and food safety. Nanophotonic biosensors rely on the interaction of the evanescent field with target bioanalytes to produce a measurable optical signal output. This thesis is a groundbreaking achievement in the field of
nanoresonator-based biosensor platforms. Through the use of finite-difference timedomain (FDTD) simulations, we have developed three distinct designs that incorporate metal-insulator-metal (MIM), gold (Au), and 2D material nanoresonators. These
designs have the potential to revolutionize the biosensor industry and pave the way
for new and innovative applications.
The design of two different MIM nanoresonator configurations, (i) metal-insulatormetal nanopillar array and (ii) metal nanoresonator array on insulator-metal thin
film stack, were nurtured. The influence of the geometric parameters such as diameter, pitch, insulator layer’s materials and thickness, the shape of individual nanoresonators, and the array arrangements were cultivated efficiently to balance the leakiness of MIM nanoresonators for achieving high surface sensitivity. With the best design parameters, MIM nanoresonators were fabricated and experimentally validated
with varying concentrations of polystyrene beads. The MIM nanopillar array device
demonstrated the best experimental detection sensitivity of 6.54 ± 0.7 nm/decade
for polystyrene beads of 100 nm diameter. Polystyrene beads were used to test the device’s performance as their optical properties, such as refractive index and extinction coefficient, match well with most bioanalytes.
Despite the high degree of tunability of localized surface plasmon resonance field,
the fabrication complexity associated with different MIM nanoresonators imposes
limitations for mass production and cost-effectiveness. In this context, plasmonic
Au nanoresonators were proposed, and the best design was established using FDTD
simulation to enhance the localized surface plasmon resonance (LSPR) field. The
devices were fabricated with the best design parameters and were biofunctionalized,
demonstrating SARS-CoV-2 detection with one of the lowest limits of detection 1
virus-like particle (VLP) µL−1 and detection sensitivity of 1.32 ± 0.08 nm/decade.
We also proposed a design of a portable point-of-care biosensing platform using our
Au nanoresonators.
Furthermore, we delved into different metasurface designs of MoS2 nanoresonators
to mitigate the field dissipation issues that plague the plasmonic metal nanostructures. We introduced three groundbreaking MoS2 nanoresonator designs for biosensor
platforms, established novel fabrication methods and experimentally evaluated their
performances. MoS2 was selected as the material for the nanoresonator due to its
high refractive index and low absorption coefficient in the visible wavelength range.
Moreover, MoS2 has minimal cytotoxicity and biocompatibility, making it suitable for
various biosensing applications. The best design obtained from FDTD simulations
were utilized to fabricate nanoresonators with the large area (1 inch × 1 inch) MoS2
thin film grown by pulsed laser deposition system. The experimental measurements
provided a detection sensitivity of 13.71 ± 1.7 nm/decade and a limit of detection
(LOD) of 4 polystyrene beads.
By innovating three distinct nanophotonic platforms, we have showcased the adept
detection of 100 nm-sized polystyrene beads and SARS-CoV-2 virus-like particles.
This thesis research not only underscores the accomplishment of nanophotonics but
also symbolizes its profound capacity to make a monumental impact in biosensing.
Our ingenious approach has demonstrated capability and illuminated a path
where nanophotonics emerges as a transformative force, fundamentally reshaping the
biosensing landscape with unparalleled precision and efficacy
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The Effects of Speaker Race on Whites' Affective and Cognitive Reactions to Statements about Racial Inequalities
Full text linkThree experiments examined the effects of speaker race on Whites’ reactions to statements expressing prejudice towards Blacks and affirmative action policies. In Experiment 1, participants read an argument by either a White or Black author stating that discrimination against Blacks no longer exists, and that affirmative action policies are no longer needed. Results indicated that Whites, particularly those highly motivated to respond without prejudice, were more likely to agree with the Black versus White author. Experiment 2 extended the within-minority group speaker results of Study 1 by finding that an inter-minority group (Asian) speaker was also generally more persuasive than the White author. Finally, Experiment 3 tested the effectiveness of an intervention strategy, finding that confrontation of the Black author by either a Black or White person indirectly reduced agreement with the Black author’s statements. These findings help to further understanding of the circumstances under which Whites recognize racial prejudice and support public policies designed to reduce racial inequalities.PsychologyDoctor of Philosophy (Ph.D.
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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