1,721,178 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
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
Gambaran Fungsi Kognitif Pada Pasien Pasca Stroke di Poliklinik Neurologi RS Otak Dr. Drs. M. Hatta Bukittinggi Tahun 2022
Get PDFStroke merupakan penyakit neurologis yang menyerang otak secara langsung. Stroke menjadi penyebab kematian dan kecacatan nomor dua di dunia. Kecacatan dapat terjadi tidak hanya pada fungsi motorik dan sensorik, tetapi juga dapat terjadi gangguan pada fungsi kognitif yang terjadi akibat adanya perkembangan Cerebral Small Vessel Disease. Penelitian ini bertujuan untuk mengetahui gambaran fungsi kognitif pada pasien pasca stroke di poliklinik neurologi RS Otak Dr. Drs. M. Hatta Bukittinggi berdasarkan karakteristik, fungsi kognitif, dan distribusi frekuensi gangguan fungsi kognitif pada pasien pasca stroke iskemik dan stroke hemoragik.
Penelitian ini merupakan penelitian deskriptif yang dilakukan di RS Otak Dr. Drs. M. Hatta Bukittinggi pada tahun 2022. Sampel diambil dengan menggunakan teknik consecutive sampling dengan total berjumlah 65 subjek. Sampel penelitian ini adalah pasien pasca stroke di Poliklinik Neurologi RS Otak Dr. Drs. M. Hatta, Bukittinggi. Sampel diambil dengan data primer menggunakan MMSE dan data sekunder dari rekam medis pasien.
Hasil penelitian ini menunjukan dari 65 sampel didapatkan 53 pasien iskemik dan 12 pasien hemoragik dengan fungsi kognitif normal pasien iskemik 37,7% dan iskemik 33,3%, gangguan kognitif ringan pasien iskemik 37,7% dan pasien hemoragik 33,3%, dan gangguan kognitif berat pasien iskemik 24,5% dan hemoragik 33,3%.
Kesimpulan dari penelitian ini mendapati hasil kejadian stroke iskemik lebih banyak daripada stroke hemoragik. Hasil karakteristik pasien pasca stroke ditemukan variatif karena perbedaan tingkat keparahan dan faktor risiko. Ditemukan frekuensi tingkat gangguan fungsi kognitif terbanyak pada pasien tanpa gangguan kognitif dan ringan
Pemasangan struktur komponen konkrit pra-tuang / Ainur Fatheen Nadiha M. Hatta
Get PDFLaporan ini secara ringkasnya menerangkan tentang segala proses yang terlibat dalam pemasangan komponen konkrit pra-tuang ini. Hasil laporan ini berpandukan daripada pengalaman menjalani latihan praktikal selama lima bulan di tapak bina. Laporan ini terbahagi kepada beberapa bahagian dan dimulakan dengan pendahulan serta pengenalan tentang konkrit pra-tuang tersebut. Seterusnya adalah berkaitan latar belakang syarikat dan latar belakang projek pembinaan. Melalui pemerhatian di tapak projek pembinaan, pemasangan konkrit pra-tuang tidaklah semudah yang disangkakan. Di dalam laporan ini diterangkan secara ringkas komponen - komponen utama konkrit pra-tuang. Seterusnya diterangkan dengan lebih terperinci mengenai proses pemasangan konkrit pra-tuang dan juga peralatan serta jentera yang digunakan semasa proses pemasangan tersebut. Selain itu, menerangkan ketidakgunaan konkrit pra-tuang di kawasan tandas sekolah. Semasa proses pemasangan pra-tuang sedang dijalankan, terdapat beberapa masalah yang dikenal pasti dan laporan ini disudahi dengan beberapa cadangan yang dirasakan dapat menyelesaikan masalah tersebut. Kesimpulannya, laporan ini dapat menjelaskan dengan lebih mendalam proses pemasangan bumbung secara praktikal kepada para pembaca
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
An approach towards the synthesis of codinaeopsin derivatives as uniques tryptophan-polyketide anti-malarial compounds / Ummu Umairah M Hatta
Get PDFIn this study, codinaeopsin was chosen as our synthetic target compound due to its unique tryptophan-tetramic acid, pyrrolidinone structure. Codinaeopsin was isolated from biological source which is white yemeri trees and obtaining the continuous supply of codinaeopsin is problematic due to the scarcity of product origin. Over the decade, there is only one successful total synthesis of codinaeopsin was reported involving a lengthy step. Thus, a new synthetic route had been developed to overcome the problem. A series of successive functional group modifications was performed which began with esterification of L-tryptophan by using methanol and thionyl chloride (100%), followed by condensation of the methyl ester utilizing the methyl malonyl chloride to furnish an intermediate diester. This diester is then reacted with sodium methoxide to furnish β,βdiketo pyrrolidinone, a crucial diketo pyrrolidinone ring template via Dieckmann cyclization reaction. Lastly, the tetramic acid type compound is achieved by decarboxylation of the β,β-diketo pyrrolidinone employing acetonitrile. All compounds were synthesized in moderate to good yield in 4 steps with an overall yield of 34.05%. Nevertheless, different pyrrolidinone-type compounds from different hydrazine salts were synthesized via hydrazination and all the compounds were produced in low to good yields. In brief, this research was designed to provide intriguing new pathways to prepare tetramic acid carbon skeleton of codinaeopsin and minimize the cost and shorten the route for synthesizing tetramic acid
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