1,721,336 research outputs found
Tikar dalam perubahan zaman
No full textPurwasito Andrik. Tikar dalam perubahan zaman. In: Archipel, volume 41, 1991. pp. 129-137
Bastiar, Andrik. 2017. Acceptance Mesin Bubut di Workshop JurusanTeknik Mesin FT UM ditinjau dari Noise dan Vibrasi
No full textABSTRAK Bastiar, Andrik. 2017. Acceptance Mesin Bubut di Workshop Jurusan Teknik Mesin FT UM ditinjau dari Noise dan Vibrasi. Skripsi, Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Malang. Pembimbing: (1) Drs. Wahono, S.ST., M.Pd., (2) Dr. Hj. Widiyanti, M.Pd. Kata Kunci: acceptance, mesin bubut, workshop, noise, vibrasi Mesin bubut merupakan suatu jenis mesin perkakas yang dalam proses kerjanya bergerak memutar benda kerja dan menggunakan mata potong pahat (tools) sebagai alat untuk menyayat benda kerja tersebut. Didalam mesin bubut terdapat banyak komponen-komponen untuk mendukung proses pengerjaan, contohnya pada kepala tetap yang didalamnya ada beberapa macam komponen seperti roda gigi, bantalan (bearing), pully dan lain-lain. Komponen-komponen tersebut bisa menimbulkan getaran (vibrasi) ataupun noise (kebisingan) jika sudah dalam keadaan sudah aus atau tidak tepat dalam pemasangannya dan pelumasan. Vibrasi dan noise pada mesin bubut bisa menjadi salah satu alternatif parameter untuk mengetahui keadaan atau kondisi pada suatu mesin, sehingga penelitian ini bertujuan untuk Tujuan penelitian ini ialah untuk mengetahui kualitas dari suatu mesin, apakah masih mampu menerima jika diberi perlakuan variasi kecepatan yang mana hasil tersebut dibandingkan dengan standar yang ada. Dalam hal ini, pada bagian kepala tetap dipilih untuk data pengambilan sampel getaran dan kebisingan karena didalamnya terdapat komponen-komponen yang berpotensi menimbulkan getaran ataupun kebisingan. Penelitian ini menggunakan metode penelitian eksperimental laboratorium dengan jenis pendekatan kuantitatif. Desain penelitian yang digunakan pada penelitian ini adalah menggunakan tiga mesin bubut dengan menggunakan variasi kecepatan spindel diantaranya; mesin bubut SAN YUEN dengan kecepatan spindel 50 rpm, 90 rpm, 140 rpm, 200 rpm, 250 rpm, 450 rpm, 700 rpm, 1000 rpm, mesin bubut Krisbow dengan kecepatan spindel 45 rpm, 70 rpm, 90 rpm, 108 rpm, 140 rpm, 165 rpm, 215 rpm, 255 rpm, 330 rpm, 385 rpm, 510 rpm, 585 rpm, 770 rpm, 900 rpm, 1170 rpm, 1800 rpm, dan mesin bubut ANNN YANG dengan kecepatan 36 rpm, 55 rpm, 75 rpm, 105 rpm, 130 rpm, 185 rpm, 250 rpm, 370 rpm, 630 rpm, 920 rpm, 1250 rpm, 2000 rpm. Ketiga mesin ini diuji pada bagian kepala tetap menggunakan pengujian vibrasi dan noise, dengan menggunakan alat ukur vibration meter MK-10L dan Sound Level Meter Krisbow KW 06-291. Hasil penelitian pada ketiga mesin bubut untuk pengujian vibrasi ialah semua vibrasi pada mesin sangat baik dan dibawah vibrasi yang diizinkan, sedangkan untuk noise semua masuk dalam batas yang diizinkan kecuali pada kecepatan 1800 rpm dalam mesin bubut Krisbow dan kecepatan 105 rpm, 370 rpm, 2000 rpm dalam mesin bubut ANNN YANG yang melebihi batas yang diizinkan
Supplemental Material - Educational identity statuses: Stability and change across the secondary school transition
No full textSupplemental Material for Educational identity statuses: Stability and change across the secondary school transition by Annabelle HT Christiaens, Andrik I Becht, Stefanie A Nelemans and Susan Branje in European Journal of Personality</p
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
Supplemental Material - Educational identity statuses: Stability and change across the secondary school transition
No full textSupplemental Material for Educational identity statuses: Stability and change across the secondary school transition by Annabelle HT Christiaens, Andrik I Becht, Stefanie A Nelemans and Susan Branje in European Journal of Personality</p
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
- …
