1,720,975 research outputs found
PENERAPAN MODEL DIRECT INSTRUCTION UNTUK MENINGKATKAN PEMAHAMAN KONSEP SISWA PADA TOPIK KESEIMBANGAN STATIS SISTEM PARTIKEL BENDA TEGAR
No full textConcept understanding is important in physics learning because concept understanding is the basis for developing knowledge and solving problems, but the facts that occur in class XI IPA in one of the schools in Lampung, the pre-test results show that students' concept understanding is still lacking. The author applies direct instruction model as a solution to improve students' concept understanding. The writing of this paper aims to explain the application of the direct instruction model to improve students' concept understanding on the topic of static balance of the particle system of a rigid body with a qualitative descriptive method. The method used by the author is descriptive qualitative. The data sources used in preparing the paper are lesson plans, pre-test and post-test results from class XI IPA which contains 8 people. The conclusion of this paper is that the application of the direct instruction model can improve students' concept understanding and student learning outcomes. The average score of students during the pre-test was 14.94 and after applying the direct instruction model, the average score of students during the post test increased to 65.5. Suggestions for future researchers are to provide sufficient time for students to take the post test and further examine the application of direct instruction models to improve student learning outcomes
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Sintesis Dan Pengujian Korosi Biokomposit Mgzn-Xhap Sebagai Bahan Implan Tulang Biodegradable
No full textKasus cidera tulang banyak ditemui khususnya di negara berkembang
seperti Indonesia. Penyebab utama cidera tulang adalah kecelakaan lalu lintas,
kecelakaan kerja dan bencana alam. Sebagian besar korbannya mengalami fraktur
tulang. Terdapat 7.134 pasien fraktur tulang di Rumah sakit umum Dr Soetomo,
Surabaya dari Oktober 2009 – Oktober 2012. Pada masa penyembuhan dilakukan
tindakan fiksasi tulang. Proses fiksasi tulang dengan menggunakan implan yang
bersifat innert biasanya membutuhkan operasi kedua setelah proses penyembuhan
tulang sehingga membutuhkan biaya dan waktu pemulihan pasca operasi.
Dibutuhkan suatu implan yang bersifat biodegradable sehingga operasi kedua ini
tidak perlu dilakukan. Paduan Magnesium merupakan kandidat yang tepat untuk
bahan implan ini karena memiliki modulus young yang dekat dengan tulang dan
bersifat biokompatibel dalam tubuh. Permasalahan yang diangkat dalam penelitian
ini adalah bagaimana proses sintesis biokomposit MgZnHAp sebagai bahan
implan tulang biodegradable serta bagaimana pengaruh komposisi HAp terhadap
sifat degradasinya?.
Penelitian ini bertujuan untuk mensintesis biokomposit MgZnHAp sebagai
bahan implan tulang biodegradable. Hasil dari penelitian ini diharapkan dapat
melandasi pengujian lebih lanjut secara in vitro dan in vivo sehingga bahan yang
dihasilkan dapat diaplikasikan secara klinis. Penelitian dilakukan di PSTBMBATAN
Serpong, Tangerang Selatan sejak Oktober 2015 hingga Juni 2016.
Pembuatan bahan dilakukan dengan proses sintering pada suhu 350 oC dan
penahanan 1 jam.
Pemaduan 6% Zn ke dalam Mg menghasilkan paduan MgZn berupa
larutan padat dengan matriks Mg yang memiliki jarak antar bidang kristal yang
mengecil. Pergeseran ini diakibatkan oleh proses substitusi beberapa atom Mg
oleh atom Zn pada proses sintering. Dari pengolahan data diketahui bahwa
penambahan HAp ke dalam bahan menghasilkan ukuran kristalit dan laju korosi
yang semakin kecil dengan bertambahnya komposisi HAp di dalam bahan.
Komposisi HAp yang digunakan pada penelitian ini adalah 5%, 7% dan 9%
Variations on the Author
Full text link“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
Full text linkWe 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
Full text linkWe 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
Pengaruh Pengetahuan, Persepsi dan Sikap Wanita Pasangan Usia Subur (Pus) terhadap Penggunaan Metode Kontrasepsi Tubektomi di Wilayah Kerja Puskesmas Bandar Khalipah Kabupaten Deli Serdang
No full textTubectomy contraception in the region of Bandar Khalipah Health Center Deli Serdang at least compared with other forms of contraception with the proportion of 1.23%. The low use of contraceptives tubectomy related knowledge, perceptions and attitudes of couples of childbearing age.
This study aimed to analyze the influence of the knowledge, perceptions and attitudes of women of fertile couples to the use of contraceptive methods in family planning acceptors tubectomy in the working area Puskesmas Bandar Khalipah Deli Serdang regency. This type of research is a case control study design. The population in this study are all numbered 83 people tubectomy acceptors as acceptors of tubectomy cases and numbered 83 people as controls. Data obtained by interview using a questionnaire and analyzed using Regresi Logistik Ganda at α = 5%.
The results showed that a good knowledge of family planning acceptors on the nature of the family planning program would affect them in selecting methods / tools to be used contraception, the perception that every family planning acceptors affect the mother to wear a type of contraception must be used and coupled with family planning acceptors are already considering the number of children already owned, family planning acceptors attitudes about the use of contraceptives such diverse tubectomy feel less confident when it should be used as a contraceptive and tubectomy are influences of knowledge, perceptions and attitudes towards the use of contraceptives in the working area health center tubectomy Bandar Khalipah Deli Serdang regency.Pemakaian alat kontrasepsi tubektomi di wilayah kerja Puskesmas Bandar Khalipah Kabupaten Deli Serdang paling sedikit dibandingkan dengan jenis kontrasepsi lain dengan proporsi 1,23%. Rendahnya pemakaian kontrasepsi tubektomi terkait dengan pengetahuan, persepsi dan sikap pasangan usia subur. Penelitian ini bertujuan untuk menganalisis pengaruh pengetahuan, persepsi dan sikap wanita pasangan usia subur (PUS) terhadap penggunaan metode kontrasepsi tubektomi pada akseptor KB di wilayah kerja Puskesmas Bandar Khalipah Kabupaten Deli Serdang. Jenis penelitian ini adalah disain studi case control. Populasi dalam penelitian ini adalah seluruh akseptor tubektomi berjumlah 83 orang sebagai kasus dan tidak akseptor tubektomi berjumlah 83 orang sebagai kontrol. Data diperoleh dengan wawancara menggunakan kuesioner dan dianalisis dengan uji statistik Regresi Logistik Ganda pada α = 5%. Hasil penelitian menunjukkan bahwa pengetahuan akseptor KB yang baik tentang hakekat program KB akan memengaruhi mereka dalam memilih metode/alat kontrasepsi yang akan digunakan, persepsi yang dimiliki setiap akseptor KB memengaruhi ibu untuk memakai jenis kontrasepsi yang akan dipergunakan dan ditambah dengan akseptor KB sudah mempertimbangkan jumlah anak yang sudah dimiliki, sikap akseptor KB tentang penggunaan kontrasepsi tubektomi beraneka ragam misalnya merasa kurang percaya diri bila harus menggunakan tubektomi sebagai alat kontrasepsi dan terdapat pengaruh pengetahuan, persepsi dan sikap terhadap penggunaan kontrasepsi tubektomi di wilayah kerja Puskesmas Bandar Khalipah Kabupaten Deli Serdang.126 HalamanTesis Magiste
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