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
STUDI ANALISIS DESAIN TRUNNION UNTUK PROSES LIFTING JACKET PADA SAAT PROSES FABRIKASI TAHAP ROLL UP
Get PDFPembangunan bangunan lepas pantai terus dilakukan sejalan dengan
ditemukannya lapangan minyak yang baru. Proses pembangunan bangunan lepas
pantai itu sendiri disebut dengan fabrikasi. Salah satu tahapan kegiatan fabrikasi
yaitu prosedur roll up. Dalam tahapan roll up tersebut terdapat kegiatan lifting
dengan bantuan struktur trunnion. Pada penelitian ini, akan dilakukan studi analisis
desain trunnion untuk proses lifting jacket pada saat proses fabrikasi tahap roll up.
Berdasarkan pemodelan struktur jacket dengan bantuan software SACS 12.0
didapatkan hasil integritas struktur dengan unitycheck maksimum sebesar 0,95.
Analisis konfigurasi rigging pada crane CR#1 sebesar 200,64 Ton menggunakan
sling 4,0 in, crane CR#2 sebesar 117,39 Ton menggunakan sling 3,0 in, dan crane
CR#3 sebesar 152,99 Ton menggunakan sling 3,5 in. Struktur trunnion yang
digunakan berukuran diameter 762 mm pada crane CR#1, diameter 610 mm pada
crane CR#2, dan diameter 660 mm pada crane CR#3. Masing-masing tegangan
maksimum dan unitycheck yang terjadi pada ketiga trunnion sebesar 81,114 MPa
dengan UC=0,53 pada crane CR#1, 52,687 MPa dan UC=0,34 pada crane CR#2,
dan 75,040 MPa dan UC=0,49 pada crane CR#3
PENGGULUNG KUMPARAN TRANSFORMATOR STEP-DOWN BERBASIS ATMEGA16
No full textTujuan pembuatan proyek akhir ini adalah untuk dapat menghasilkan penggulung kumparan, mendapatkan program perangkat lunak dan mengetahui unjuk kerja Penggulung Kumparan Transformator Step-Down Berbasis ATmega16.
Rancangan bangun Penggulung Kumparan TransformatorStep-Down Berbasis ATmega16 ini terdiri dari beberapa bagian pokok, yaitu: mekanik penggulung, catu daya, optocoupler sebagai sensor gulungan, rangkaian comparator LM393, sistem minimum mikrokontroler ATmega16 sebagai rangkaian pengendali input dan output, LCD sebagai display.Perancangan Penggulung Kumparan Transformator Step-Down Berbasis ATmega16 ini melewati beberapa tahapan, yaitu (1) Identifikasi kebutuhan, (2) Analisis kebutuhan, (3) Perancangan perangkat keras dan perangkat lunak, (4) Pembuatan, dan (5) Pengujian. Perancangan perangkat lunak pada proyek akhir ini menggunakan bahasa C dengan CodeVisionAVR sebagai software compiler-nya.
Hasil pengujian yang dilakukan, diketahui bahwa unjuk kerja Penggulung Kumparan Transformator Step-Down Berbasis ATmega16 ini dapat bekerja dengan baik dalam pembuatan gulungan transformator. Alat ini mampu menggulung kumparan transformator dengan email berdiameter 0,1 mm sebanyak 3932 gulungan, email berdiameter 0,2 mm sebanyak 2782 gulungan, email berdiameter 0,35 mm sebanyak 180 gulungan, email berdiameter 5 mm sebanyak 131 gulungan, dan email berdiameter 0,7 mm sebanyak 93 gulungan dengan hasil gulungan tertata rapi.Hasil penggulungan kumparan transformator dengan spesifikasi 2 A/ 9 V mampu menghasilkan tegangan 8,4 V saat ditarik arus sebesar 2 A dengan beban 4 ohm.
Kata Kunci : Transformator, Penggulung Kumparan
The Influence of Environment to Students’ Motivation and The Effect to Student Achievement Grade Audio Video Department SMK Muh. Kutowinangun Kebumen
No full textThis research aims to determine: 1) the influence of school environment to
student achievement. 2) the influence of family environment to student
achievement. 3) the influence of communities to student achievement. 4) the
influence of industrial environments to student achievement. 5) the influences of
students’ motivation to student achievement. (6) the influence of school
environment, family environment, communities, industrial environments and
students’ motivation to student achievement from student XII grade Audio Video
department SMK Muh. Kutowinangun Kebumen.
This research is an Ex-post facto with quantitative approach. The population
is a class XII student of Audio Video department SMK Muh. Kutowinangun
Kebumen school year 2011/2012 which amounts to 36 students. Methods of data
collection using questionnaires Likert scale models for all variables. The validity
of research instruments performed by analysis of the items calculated by the
formula Product moment correlation. Reliability of the instrument calculated
using Cronbach Alpha. Prior to the first data analysis conducted descriptive
analysis and testing requirements analysis including tests of normality, linearity
tests, and multicollinearity test. Data analysis techniques are used to test the
hypothesis is a technical product moment regression analysis..
The results showed that: (1) there is a positive relationship between school
environment (X1) with student achievement (Y) are indicated coefficient R =
0,335. The coefficient of determination (R2) = 0,112. (2) there is a positive
relationship between family environment (X2) with student achievement (Y) are
indicated coefficient R = 0,578. The coefficient of determination (R2) = 0,334. (3)
there is a positive relationship between communities (X3) with student
achievement (Y) are indicated coefficient R = 0,485. The coefficient of
determination (R2) = 0,235. 4) there is a positive relationship between industrial
environments (X4) with student achievement (Y) are indicated coefficient R =
0,367. coefficient of determination (R2) = 0,135. (5) there is a positive relationship
between students’ motivation (X5) with student achievement (Y), are indicated
coefficient R = 0,658. coefficient of determination (R2) = 0,434. (6) there is a
positive relationship between school environment (X1), family environment (X2),
between communities (X3), industrial environments (X4) and students’ motivation
(X5) together in the readiness of student achievement (Y), are indicated coefficient
R = 0,725. coefficient of determination (R2) = 0,526
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
- …
