1,720,954 research outputs found
Printable Graphene-Sustainable Elastomer-Based Cross Talk Free Sensor for Point of Care Diagnostics
No full textDeveloping sensors for monitoring physiological parameters
such
as temperature and strain for point of care (POC) diagnostics is critical
for better care of the patients. Various commercial sensors are available
to get the job done; however, challenges like the structural rigidity
of such sensors confine their usage. As an alternative, flexible sensors
have been looked upon recently. In most cases, flexible sensors cannot
discriminate the signals from different stimuli. While there have
been reports on the printable sensors providing cross-talk-free solutions,
research related to developing sensors from a sustainable source providing
discriminability between signals is not well-explored. Herein, we
report the development of a stencil printable composition made of
graphene and epoxidized natural rubber. The stencil printability index
was vetted using rheological studies. Post usage, the developed sensor
was dissolved in an organic solvent at room temperature. This, along
with the choice of a sustainable elastomer, warrants the minimization
of electronic waste and carbon footprint. The developed material demonstrated
good conformability with the skin and could perceive and decouple
the signals from temperature and strain without inducing any crosstalks.
Using a representative volume element model, a comparison between
experimental findings and computation studies was made. The developed
sensors demonstrated gauge factors of −506 and 407 in the bending
strain regimes of 0–0.04% and 0.04%–0.09%, respectively,
while the temperature sensitivity was noted to be −0.96%/°C.
The printed sensors demonstrated a multifunctional sensing behavior
for monitoring various active physiological parameters ranging from
temperature, strain, pulse, and breathing to auditory responses. Using
a Bluetooth module, various parameters like temperature and strain
could be monitored seamlessly in a smart-phone. The current development
would be crucial to open new avenues to fabricate crosstalk-free
sensors from sustainable sources for POC diagnostics
Printable Carbon Nanotube-Liquid Elastomer-Based Multifunctional Adhesive Sensors for Monitoring Physiological Parameters
No full textDeveloping a printed elastomeric wearable sensor with
good conformity
and proper adhesion to skin, coupled with the capability of monitoring
various physiological parameters, is very crucial for the development
of point-of-care sensing devices with high precision and sensitivity.
While there have been previous reports on the fabrication of elastomeric
multifunctional sensors, research on the printable elastomeric multifunctional
adhesive sensor is not very well explored. Herein, we report the development
of a stencil printable multifunctional adhesive sensor fabricated
in a solvent-free condition, which demonstrated the capability of
having good contact with skin and its ability to function as a temperature
and strain sensor. Functionalized liquid isoprene rubber was selected
as the matrix while carboxylated multiwalled carbon nanotubes (c-CNTs)
were used as the nanofiller. The selection of the above model compounds
facilitated the printability and also helped the same composition
to demonstrate stretchability and adhesiveness. A realistic three-dimensional
microstructure (representative volume element model) was generated
through a computational framework for the current c-CNT-liquid elastomer.
Further computational simulations were performed to test and validate
the correlation between electrical responses to that of experimental
studies. Various physiological parameters like motion sensing, pulse,
respiratory rate, and phonetics detection were detected by leveraging
the electrically resistive nature of the sensor. This development
route can be extended toward developing different innovative adhesives
for point-of-care sensing applications
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
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
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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