1,721,015 research outputs found
ANTIMICROBIAL ACTIVITY OF METHANOL EXTRACT FROM MAHOGANY SEEDS Sri Mursiti, Supartono (SWIETENIA MACROPHYLLA, KING)
No full textMahogany seeds is one of the natural ingredients that can be used as an antimicrobial. This study aims to determine the antimicrobial activity of methanol extract mahogany seeds and determine the components of active compounds that have antimicrobial activity against Escherichia coli (E.coli) and Bacillus cereus (B.cereus). Extraction was done by maceration method with methanol and testing of antimicrobial activity using the absorption method. The results showed that the antimicrobial activity of methanol extract mahogany seeds shows inhibitory activity and provide clear zone against bacteria E.coli with value Inhibitory Regional Diameter 16,75 mm respectively, but did not give a clear zone of the bacterium B.cereus. Based on the results of the study it can be concluded that the methanol extract of seeds mahogany has antimicrobial activity against E.coli
PENGARUH METODE MATERNAL REFLEKTIF DENGAN TEKNIK PERDATI DAN TEKNIK MEMBACA IDEO-VISUAL TERHADAP PEMEROLEHAN PERBENDAHARAAN KATA ANAK TUNA RUNGU WICARA DI SURAKARTA
Get PDFMursiti : PENGARUH METODE MATERNAL REFLEKTIF DENGAN TEKNIK
PERDATI DAN TEKNIK MEMBACA IDEO-VISUAL TERHADAP
PEMEROLEHAN PERBENDAHARAAN KATA ANAK TUNARUNGU
WICARA DI SURAKARTA. Skripsi, Surakarta : Fakultas Keguruan dan Ilmu
Pendidikan Universitas Sebelas Maret Surakarta, Januari 2007.
Tujuan penelitian adalah untuk mengetahui berpengaruh atau tidaknya, teknik
perdati ( 1 X ) terhadap pemerolehan perbendaharaan kata (Y), untuk mengetahui
berpengaruh atau tidaknya teknik membaca ideo-visual ( 2 X ) terhadap pemerolehan
perbendaharaan kata (Y), dan untuk mengetahui berpengaruh atau tidaknya teknik
perdati ( 1 X ) dan teknik membaca ideo-visual ( 2 X ) terhadap pemerolehan
perbendaharaan kata (Y) di SLB-B YRTRW Surakarta kelas D5. Teknik perdati dan
teknik membaca ideo-visual sebagai variabel bebas, pemerolehan perbendaharaan
kata sebagai variabel terikat.
Populasi penelitian adalah seluruh siswa kelas D5 SLB-B YRTRW Surakarta
tahun pelajaran 2006/2007 sebanyak 8 siswa. Dalam penelitian ini semua populasi
dijadikan sampel sebanyak 8 siswa. Teknik pengumpulan data menggunakan metode
observasi pada variabel teknik perdati, untuk variabel teknik membaca ideo-visual
dan variabel pemerolehan perbendaharaan kata menggunakan tes. Sebelum dilakukan
penelitian maka perlu dilakukan uji validitas yaitu korelasi product moment untuk
instrumen observasi, dan uji validitas point berserial untuk tes.
Untuk mencari pengaruh antara teknik perdati dan teknik membaca ideo-visual
terhadap pemerolehan perbendaharaan kata menggunakan teknik analisis regresi
ganda. Dari hasil analisis data menggunakan teknik analisis regresi ganda diperoleh
koefisien yang mana
tab xy r r > untuk
1 X terhadap Y yaitu sebesar 0,7662 > 0.707,
untuk
2 X terhadap Y yaitu sebesar 0,7537 > 0.707 dan untuk
1 X dan
2 X terhadap
Y diperoleh
hit
F > tab F atau 21,1360 > 5,79 dengan db=2 vs 5 dk pembilang=1 dan dk
penyebut=5 dengan N=8 dan taraf signifikansi 5%. Sehingga diperoleh kesimpulan
bahwa, teknik perdati ( 1 X ) dan teknik membaca ideo-visual ( 2 X ) secara bersama-
sama mempengaruhi pemerolehan perbendaharaan kata (Y), yakni sebesar 89,43%
dari teknik perdati 45,75%, dan teknik membaca ideo-visual 43,68%. Sedangkan
berdasarkan persamaan regresi Y = -28,0250 + 1,0358 X1 + 0,9359 X2 artinya dapat
disimpulkan bahwa rata-rata peningkatan/ penurunan pemerolehan perbendaharaan
kata (Y) diperkirakan sebesar 1,0358 untuk setiap peningkatan/ penurunan satu unit
teknik perdati (X1) dan 0,9359 untuk setiap peningkatan/ penurunan satu unit teknik
membaca ideo-visual (X2)
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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