1,721,217 research outputs found
PENGGUNAAN DIODA JENIS LED (LIGHT EMITING DIODE) PADA PEMBUATAN SEL SURYA SEDERHANA BERBASIS BAHAN SEMIKONDUKTOR
No full textNatural energy is very dependent on energy Human Needs one that is in need of modern man is the Electrical Energy. Energy Needs of electricity is currently only gained from burning carbon so that should be a Solution To Energy electricity can be very easy One of the ways and media that can be used is the use of LED (Light Emiting Diode) for Solar Cells Simple to determine the relationship between the circuit Solar Cells Sederhahana based LED (Light Emiting Diode) and the relationship Lux Value Terhahadap Voltage (mV) generated Networks Solar cells Sederhahana Be rbasis LED (Light Emiting Diode). This research is a kind of an experiment conducted at the Laboratory of Physics FKIP Jember University. This study tested the LED circuit which amounted to 10 pieces with a color that is white. Methods of data collection in this study include observation, and documentation. Source of data derived from dihasikan Voltage Solar Cells Using Simple with LED. Analism a Data With Output Voltage Against Linking LED with a series arrangement, series-parallel and parallel. The results of the research the highest potential difference is due to the connection circuit 10 series LED (light Emiting Diode) in series to get a high reinforcement. Based on the data obtained, the conclusions from this study is there is a relationship between the circuit (series, parallel and series-parallel) Solar Cells Based Sederhahana LED (Light Emiting Diode) against voltage (mV) is generated
PENGARUH MODEL PROBLEM BASED LEARNING MELALUI GAMBAR DISERTAI TEKNIK CONCEPT MAPPING DALAM PEMBELAJARAN IPA (FISIKA) DI Mts (Studi pada Kelas VII MTs Negeri Jember 1)
No full textTujuan dari penelitian ini adalah mengkaji pengaruh model problem based learning melalui gambar disertai teknik concept mapping terhadap aktivitas belajar siswa dan hasil belajar siswa dalam pembelajaran IPA (Fisika) di MTs. Jenis penelitian ini adalah penelitian eksperimen dengan desain penelitian menggunakan post-test only control group. Populasi dalam penelitian ini siswa kelas VII di MTs Negeri Jember 1 dan sampelnya adalah siswa kelas VII B sebagai kelas eksperimen dan VII C sebagai kelas kontrol. Metode pengumpulan data meliputi tes, observasi di sekolah, portofolio, dokumentasi, dan wawancara. Metode analisa data menggunakan Independent Sample T-Test dengan bantuan SPSS 16. Hasil dari penelitian ini yaitu (1) hasil aktivitas belajar siswa berdasarkan analisis Independent Sample T-Test diperoleh nilai sig (2-tailed) adalah 0.000. Pengujian hipotesis yang digunakan adalah pengujian hipotesis pihak kanan, sehingga nilai signifikansi (2-tailed) dibagi 2 dan diperoleh signifikansi (1-tailed) sebesar 0.000, (2) hasil belajar siswa berdasarkan analisis Independent Sample T-Test diperoleh nilai sig (2-tailed) adalah 0.000. Pengujian hipotesi yang digunakan adalah pengujian hipotesis pihak kanan, sehingga nilai signifikansi (2-tailed) dibagi 2 dan diperoleh signifikansi (1-tailed) sebesar 0.000. Berdasarkan data yang diperoleh, kesimpulan yang dapat diambil adalah model problem based learning melalui gambar disertai teknik concept mapping berpengaruh terhadap aktivitas belajar dan hasil belajar siswa dalam pembelajaran IPA (Fisika) di MTs
Perhitungan Intensitas Signal MRI (Magnetic Resonance Imaging)Akibat Aliran Darah Dengan Metoda Simulasi
No full textTelah dibuat program simulasi hubungan Intensitas signal (I) terhadap beberapa parameter kecepatan aliran darah (Vo), panjang slice (l) dan sudut pemberian pulsa RF (q), dengan kondisi optimum (TE= 14 ms, TR= 52 ms) ,T1 =500 ms, T2= 200 ms, panjang coil (d= 10 cm) , pada aliran darah dengan menggunakan alat MRI (Magnetic Resonance Imaging). Adapun model profil aliran darah yang digunakan adalah Plugflow dengan teknik pemberian pulsa Refoccused Fast Gradient Echo, dengan pulsa kontinyu. Dari hasil simulasi diperoleh panjang slice optimum didapat pada l= 0.1 cm, dengan q = 90o. Sebagai pembanding hasil simulasi dengan menggunakan model dari “Jia-Hong-Gao” didapat slice optimum l = 0.3 cm pada Vo= 5 cm/s, q= 67.5o,dan l= 0.9 cm pada Vo=15cm/s,q=67.5o, dan l= 1.4 cm pada Vo= 25 cm/s,q=90o. Perbedaan hasil ini disebabkan pada model Jia-Hong Gao, kurva intensitas signal terhadap kecepatan diskontinu , secara tak langsung pada daerah tersebut perubahan panjang slice sangat elastis terhadap intensitas yang dihasilkan. Dari hasil simulasi kedua model tersebut memperlihatkan bahwa pada kecepatan aliran rendah sebaiknya digunakan slice yang kecil, dan semakin besar kecepatan sebaiknya panjang slice yang digunakan semakin besa
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
- …
