1,720,956 research outputs found
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
Isolasi dan Formulasi Sediaan Hidrogel Kitosan dari Kulit Udang Dogol (Parapenaeopsis scupltilis) terhadap Penyembuhan Luka Sayat Eksisi pada Tikus Putih
Get PDFHydrogel is a type of hydrophilic polymeric macromolecule in the form of
a cross-linked network, has the ability to swell in water (Swelling), and has high
water diffusivity. Because of these unique physical properties it is used as a
restraining/drug-releasing matrix, so that it can be used as a good conductor of
active ingredients such as chitosan. Shrimp shells are a source of natural ingredients
that contain chitosan. Chitosan is able to act as a wound healer such as excision
wounds. The aim of this study was to evaluate the effectiveness of shrimp skin
chitosan hydrogel in excision wound healing in white rats.
Chitosan was isolated using acidic and basic solvents from Shrimp shell,
then characterized the water content, ash content, protein content, ninhydrin test
and functional groups. The chitosan obtained was made into hydrogel preparations
with a concentration of 3% (F1), 5% (F2), 7% (F3). Evaluation of hydrogel
preparations includes organoleptic, pH, physical characteristics, cross-linking,
swelling, elasticity, cycling test. The effectiveness test was carried out on excision
wounds on white rats and measuring the diameter of the wound and the percentage
of excision wounds.
The results of the characterization of chitosan are that it has a water content
value of 9.27%, an ash content of 1.69% and a protein content of 4.21%. The best
evaluation of the hydrogel preparation was found in the shrimp shell chitosan
concentration of 7% (F3), did not change color during storage with an average pH
value of 4.92. The characterization results of 7% chitosan (F3) hydrogel were 8.8
cm in diameter, 0.67 mm in thickness and >200 times folding power. Chitosan
hydrogel 7% (F3) showed 0.7% cross-linking, 106.8% swelling, 9.0% elasticity.
Shrimp shell chitosan hydrogel 7% (F3) can heal rat excision incisions by
increasing the percentage of wound diameter reduction and wound diameter
reduction. The administration of 7% shrimp shell chitosan hydrogel gave a
significant difference to the positive control and negative control (p>0.05%).
The conclusion of this study is that 7% shrimp shell chitosan hydrogel is the
best formula and has the effectiveness of healing excision wounds in male white
rats seen from the reduction in wound diameter and an increase in the percentage
reduction in wound diameter.74 HalamanTesis Magiste
Implementasi Program Layanan Home Visit Dalam Optimalisasi Belajar Secara Daring Pada Peserta Didik di SMA Muhammadiyah 1 Medan
Get PDFPenelitian ini bertujuan membahas tentang implementasi program
layanan home visit dalam optimalisasi belajar siswa secara daring di SMA
Muhammadiyah 1 Medan. Penelitian ini menggunakan metode penelitian
kualitatif. Keseluruhan data diperoleh dari observasi, wawancara, dan
dokumentasi. Proses penyajian data dilakukan dengan pendekatan deskriptifkualitatif , yaitu analisis data yang dilakukan dengan menggunakan kata-kata
untuk mengungkapkan fakta, variabel dan keadaan yang peneliti dapatkan ketika
penelitian berlangsung serta menjelaskan data yang didapatkan.
Hasil penelitian menunjukkan: 1) Guru BK masih mengalami kendala
dalam memberikan layanan home visit. Hal tersebut karena adanya orang tua
siswa yang sulit untuk ditemui ketika dirumah karena adanya kesibukan pribadi
sehingga tidak dapat menyempatkan waktu ketika dirumah. hal itu tentu saja
membuat guru BK menjadi sulit bekerja sama dengan orang tua siswa. 2)
Pelaksanaan program layanan home visit untuk mengoptimalisasikan kegiatan
belajar siswa secara daring sudah berjalan dengan baik. Hal tersebut dikarenakan
guru BK tetap memberikan layanan home visit dengan menerapkan protokol
kesehatan. Guru BK di SMA Muhammadiyah 1 Medan terus membangun
komunikasi yang baik dengan orang tua siswa. Bekerjasama dengan orang tua
terkait setiap proses perkembangan belajar siswa yang tidak aktif dalam kegiatan
belajar daring. 3) Solusi yang guru BK lakukan agar tetap dapat terus melakukan
program home visit adalah memberikan pemahaman kepada orangtua bahwa,
peran guru BK tidak hanya menangani siswa yang bermasalah saja, tetapi guru
BK juga berperan dalam pemberian motivasi dan dorongan terhadap siswa terkait
kendala yang dialami dalam kehidupan sehari-hari. Maka dari itu orangtua tidak
perlu merasa malu apabila harus dilakukan kegiatan home visit dirumahnya.
Karena bisa jadi dengan kegiatan home visit orang tua menjadi terbantu dalam
mengawasi dan mengarahkan siswa untuk mencapai kehidupan yang lebih efektif
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
- …
