1,721,434 research outputs found
Three-dimensional seismic velocity tomography of Montserrat from the SEA-CALIPSO offshore/onshore experiment
No full textThe SEA-CALIPSO experiment in December 2007 incorporated a sea-based airgun source, and seismic recorders both on Montserrat and on the adjacent sea floor. A high quality subset of the data was used for a first arrival P-wave velocity tomographic study. A total of more than 115,000 traveltime data from 4413 airgun shots, and 58 recording stations, were used in this highresolution tomographic inversion. The experiment geometry limited the depth of well resolved structures to about 5 km. The most striking features of the tomography are three relatively high velocity zones below each of the main volcanic centers on Montserrat, and three low velocity zones flanking Centre Hills. We suggest that the high velocity zones represent the solid andesitic cores of the volcano complexes, characterized by wave speeds faster than adjacent volcaniclastic material. The low velocity zones may reflect porous volcaniclastic material and/or alteration by formerly active hydrothermal systems. Copyright © 2010 by the American Geophysical Union
PENINGKATAN HASIL BELAJAR SISWA PADA PEMBELAJARAN IPA DENGAN MENERAPKAN STRATEGI PROBLEM BASED LEARNING (PBL) DI SEKOLAH DASAR
Full text linkAbstrak: Penelitian ini dilatarbelakangi dengan rendahnya hasil belajar siswa di kelas V SD Negeri 26 Singkarak Kabupaten Solok. Tujuan penelitian ini untuk mendeskripsikan peningkatan hasil belajar siswa pada pembelajaran IPA dengan menerapkan strategi Problem Based Learning (PBL) pada siswa kelas V SD Negeri 26 Singkarak Kabupaten Solok. Jenis penelitian adalah PTK dengan menggunakan pendekatan kualitatif dan kuantitatif. Hasil belajar siswa siklus I 78,59 meningkat menjadi 91,41 pada siklus II. Dengan demikian, pembelajaran IPA dengan menerapkan strategi Problem Based Learning (PBL) dapat meningkatkan hasil belajar IPA siswa kelas V SD Negeri 26 Singkarak Kabupaten Solok. Kata Kunci: Hasil Belajar; IPA; Strategi Problem Based Learning (PBL)
Planiranje parcijalne skeletirane proteze kod Kenedi klase IV - diplomski rad
No full textOvaj diplomski rad istražuje planiranje i izradu parcijalnih skeletiranih proteza kod pacijenata sa Kenedi klasom IV, što predstavlja izazov u stomatološkoj protetici. Kenedi klasa IV karakteriše potpuni gubitak zuba u jednom kvadrantu uz prisustvo preostalih zuba na suprotnoj strani. Rad obuhvata detaljnu analizu teorijskih principa i metoda planiranja, uključujući kliničku procenu, izbor materijala, dizajn proteze, laboratorijsku izradu i finalno uklapanje. Klinička procena i radiografska analiza predstavljaju početne korake u procesu, pružajući osnovu za planiranje dizajna i izbora materijala. Metalni materijali kao što su kobalt-hrom i titanijum, kao i ne-metalni materijali kao što su akrilne smole, razmatrani su u kontekstu njihovih prednosti i nedostataka. Laboratorijska faza uključuje izradu modela i primenu naprednih tehnologija, kao što je CAD/CAM, dok finalno prilagođavanje osigurava optimalnu funkcionalnost i udobnost proteze. Praktična studija slučaja potvrđuje efikasnost predloženih metoda, pokazujući značaj primene teorijskih principa u stvarnom kliničkom okruženju. Rezultati su pokazali značajno poboljšanje u kvalitetu života pacijenta, uključujući funkciju i estetiku proteze.
Ova studija pruža važne smernice za stomatologe u procesu izrade parcijalnih skeletiranih proteza i ističe važnost sistematičnog pristupa u stomatološkoj protetici
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
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
Pengakuan dunia terhadap warisan dunia Indonesia
No full textHingga tahun 2019 Indonesia telah memiliki 5 (lima) Warisan Budaya Dunia (benda) dan 9 (sembilan) Warisan Budaya Tak benda (WBTb) yang telah diinskripsi oleh UNESCO, serta 1 (satu) program terbaik upaya perlindungan WBTb (Good Safeguarding Practices). Dalam Warisan Budaya Dunia terkandung yang disebut Nilai Universal Luar Biasa (Out Standing Universal Value), yang merupakan ide dasar dari Konvensi Perlindungan Warisan Dunia Alam dan Budaya Tahun 1972 (Convention concerning the Protection of the World Cultural and Natural Heritage). Nilai Universal Luar Biasa menjadi kriteria penilaian yang digunakan UNESCO untuk penetapan warisan dunia
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
- …
