1,720,955 research outputs found
Evaluasi Kualitas Udara Dengan Mengukur Kadar Total Suspended Particulate (TSP) di Laboratorium Akrilik Program Studi D III Teknik Gigi
Get PDFLaboratorium pendidikan merupakan unit penunjang akademik pada lembaga pendidikan. Laboratorium pendidikan teknik gigi dibedakan menjadi: laboratorium akrilik, laboratorium logam, dan laboratorium keramik/porselen. Bahan dasar akrilik adalah metil metakrilat (MMA). MMA dilaporkan dapat menjadi faktor iritan bagi paru-paru, kulit maupun mata. Tujuan penelitian yang akan dilakukan adalah: untuk mengetahui nilai TSP sebelum praktikum , selama praktikum dan setelah praktikum di laboratorium akrilik, untuk mengetahui kualitas udara sebelum, selama, dan setelah praktikum, serta untuk mengetahui perbedaan kualitas udara sebelum praktikum, selama praktikum, sesudah praktikum pada kondisi tanpa perlakuan dan dengan perlakuan . Jenis penelitian yang digunakan adalah penelitian non eksperimental yang bersifat deskriptif analitik. Pengumpulan data dilakukan dengan teknik data primer, yaitu kadar debu (TSP) sebelum, selama, dan setelah praktikum. Penelitian akan dilakukan di Laboratorium Akrilik Jurusan Teknik Gigi, Poltekkes Kemenkes Tanjung Karang pada bulan Agustus-Desember 2019. Teknik sampling yang digunakan purposive sampling dengan jumlah sebanyak 18 sampel. Data ditampilkan dalam bentuk tabel distribusi frekuensi dan uji t independen untuk melihat perbedaan kadar TSP sebelum, selama, dan sesudah praktikum dilaksanakan. Hasil penelitian menunjukkan bahwa jumlah Total Suspended Particulate (TSP) di laboratorium akrilik jurusan teknik gigi masih masih tergolong baik. Dari seluruh waktu pengukuran hanya pada saat pagi hari yang terdapat perbedaan secara bermakna antara kelompok perlakuan dan tanpa perlakuan
Comparison of The Detail and Dimensional Accuracy of Duplicate Working Models Using Jelly Powder and Reversible Hydrocolloid
No full textMaking dentures requires an accurate working model of the patient's jaw impression. Reversible hydrocolloid is a jelly-based impression material (class Rhodophyceae) with high accuracy. However, it has disadvantages regarding syneresis, imbibition, and is expensive. This study aims to compare the detail and dimensions accuracy of the duplicate working model using jelly powder (JP) and reversible hydrocolloid (RH). The research used a quasi-experimental design with a sample of 24. The study was carried out at the Dental Technician Laboratory of the Politeknik Kesehatan Tanjung Karang in October 2021. The accuracy and precision of the same dimensions of the work model compared to 0 minutes, 10 minutes, and 20 minutes of delayed casting. The data analysis used univariate and bivariate (Alpha=0.05). The results showed no difference in the detailed accuracy of the working model between JP and RH. The measurement results of the mean central distance from the right M1 middle fossa to the right C cup crest (AB) (p=0.607). Similarly, the mean distance from the top of the right C cup to the top of the left C cup (BC) (p=0.793). Significant differences were found in the distance from the top left of the C cup to the right M1 central fossa (AC) (p=0.006). The study has proven that jelly powder can be used as a substitute for reversible hydrocolloids in making working models
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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