1,720,954 research outputs found
Travel Time on a Wavy Path in an Inclined Plane: A Theoretical and Numerical Review
Full text linkPenelitian ini bertujuan untuk mengetahui pengaruh bentuk lintasan terhadap waktu tempuh benda yang meluncur pada bidang miring tanpa gesekan. Dua jenis lintasan dibandingkan, yaitu lintasan lurus dan lintasan bergelombang. Metode penelitian yang digunakan adalah kajian teoritik dengan pendekatan hukum kekekalan energi serta perhitungan analitik dan simulasi numerik sederhana untuk menentukan waktu tempuh pada setiap lintasan. Lintasan bergelombang dimodelkan menggunakan fungsi sinusoidal dengan variasi amplitudo dan frekuensi gelombang. Hasil perhitungan menunjukkan bahwa beberapa lintasan bergelombang dapat menghasilkan waktu tempuh lebih singkat dibandingkan lintasan lurus karena memberikan percepatan awal yang lebih besar. Namun, jika gelombang terlalu curam atau rapat, waktu tempuh justru menjadi lebih lama. Temuan ini menunjukkan bahwa bentuk lintasan berpengaruh terhadap efisiensi gerak benda dan dapat digunakan sebagai contoh penerapan konsep energi dan kalkulus variasi dalam pembelajaran fisika.This study investigates the influence of path geometry on the travel time of an object on a frictionless inclined plane, focusing on the comparison between straight and undulating (wave-like) paths. Using the principles of energy conservation and variational calculus, a mathematical expression for the travel time along a sinusoidal path is derived. Although the straight path is geometrically the shortest, the analysis shows that certain wave-shaped trajectories can yield a shorter travel time. Numerical evaluations on various amplitude and frequency parameters reveal their critical role in determining efficiency. This work reinforces the relevance of the Brachistochrone principle in theoretical physics education and demonstrates how simple numerical approaches can be utilized to explore optimal trajectories
Review Software Simulasi untuk Pembelajaran Fisika Interaktif
Full text linkPenelitian ini bertujuan untuk mengevaluasi lima software simulasi interaktif fisika, yaitu: PhET, AdaptoX (Ruangguru), The Physics Classroom, GeoGebra, dan MyPhysicsLab yang digunakan dalam pembelajaran fisika tingkat sekolah dan perguruan tinggi. Metode penelitian yang digunakan adalah deskriptif kualitatif, dengan teknik pengumpulan data melalui eksplorasi langsung terhadap fitur-fitur simulasi serta telaah dokumen dari sumber resmi. Evaluasi dilakukan berdasarkan lima dimensi utama: kesesuaian materi dengan kurikulum, kualitas visualisasi dan interaktivitas, kemudahan penggunaan, pendekatan pedagogis, serta kelebihan dan keterbatasan masing-masing software. Hasil penelitian menunjukkan bahwa PhET dan GeoGebra unggul dalam visualisasi dan interaktivitas, AdaptoX kuat dalam integrasi kurikulum nasional dan adaptivitas, The Physics Classroom efektif dalam mendukung pemahaman berbasis teks dengan simulasi sederhana, dan MyPhysicsLab menonjol dalam pendekatan numerik dan visualisasi grafik gerak. Temuan ini menegaskan bahwa tiap software memiliki kekhasan pedagogis yang dapat disesuaikan dengan karakteristik siswa, tujuan pembelajaran, dan dukungan teknologi yang tersedia. Pemanfaatan simulasi yang tepat dapat memperkuat pemahaman konseptual dan mendorong pembelajaran berbasis inkuiri yang lebih bermakna
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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