212 research outputs found
BUKTI SEBAGAI KORESPONDING AUTHOR PADA JURNAL 2 OK-Roni Pazla
Full text linkBUKTI SEBAGAI KORESPONDING AUTHOR PADA JURNAL 2 O
Pengaruh Variasi Jumlah Sudu Terhadap Putaran, Daya dan Efisiensi Turbin Air Pelton Dengan Sudu Bilah
No full textABSTRAK Hidayat, Roni. 2009. PENGARUH VARIASI JUMLAH SUDU (BUCKET) TERHADAP PUTARAN, DAYA DAN EFISIENSI YANG DIHASILKAN TURBIN AIR PELTON DENGAN SUDU BILAH. Jurusan Teknik Mesin Fakultas Teknik Universitas Negeri Malang. Pembimbing (I): Drs. Sunomo, M.Pd., Pembimbing (II): Retno Wulandari, S.T., M.T.. Kata kunci : bucket, putaran, daya, efisiensi, turbin Pelton. Pembangkit listrik skala mikrohidro adalah sebuah instalasi pembangkit listrik yang memiliki kapasitas kecil dan dalam pembangunan instalasinya dibutuhkan anggaran yang relatif kecil dibandingkan dengan anggaran pembangunan sebuah PLTA. Pada akhirnya diharapkan bahwa efisiensi dari turbin air Pelton yang digunakan akan semakin meningkat dan semua masalah krisis energi listrik dapat segera terselesaikan sehingga semua orang dapat mendapatkan pemenuhan atas kebutuhan energi listrik. Bucket atau runner adalah komponen penting dalam proses konversi energi kinetik menjadi energi mekanik pada sebuah instalasi turbin air Pelton. Konstruksi bucket sangat mempengaruhi hasil guna atau konversi potensi energi yang terkandung dalam air terjun menjadi energi mekanik yang selanjutnya dapat dikonversi menjadi bentuk yang lain sesuai dengan kebutuhan. Dalam penelitian ini peneliti membuat beberapa buah runner masing-masing memiliki 6 buah, 9 buah, 12 buah, dan 15 buah mata sudu. Selanjutnya sudu dipasang pada mesin uji prestasi turbin air dan diberikan beberapa varisi pembebanan. Setelah diberikan pembebanan kemudian diamati berapa putaran yang dihasilkan untuk dianalisis lebih lanjut. Variasi pembebanan yang dipakai adalah 0 Newton, 5 Newton, 10 Newton, 15 Newton, 20 Newton, 25 Newton, 30 Newton, 35 Newton, dan 40 Newton. Penelitian menggunakan metode eksperimental di laboratorium teknik mesin dan dilakukan dengan menggunakan mesin uji prestasi turbin air yang jumlah sudunya divariasi terhadap putaran, daya, serta efisiensi dan didapatkan bahwa terdapat peningkatan yang signifikan dari putaran, daya, dan efisiensi turbin yang dihasilkan. Hasil penelitian menunjukan beberapa hal, yaitu: 1. Jika jumlah sudu bertambah1 buah maka putaran turbin akan bertambah sebesar 13,886 rpm, 2. Jika jumlah sudu bertambah1 buah maka daya turbin akan bertambah sebesar 0,043watt, 3. Jika jumlah sudu bertambah1 buah maka efisiensi turbin akan bertambah sebesar 1,604 %
Rewriting our comments and revisiting revision practices: new concepts for sustainable instruction in the writing classroom
No full textThe driving instructional tool in the majority of writing classrooms, comments, is failing students and instructors because comments are a tool, and not a technique. The utility of comments within the writing classroom is only as strong as its pairing with other instructional techniques. Using comments to teach comments is a flawed method of instruction, and if instructors want to properly use comments within their classes, they must first show their students how to use these techniques in improving their writing. Thus far, the focus of facilitating student revision and student growth within writing classrooms has been on the study of specific comments written by instructors on student papers. The study of such comments reveals the differences in styles, modes, and voices projected from those instructors, but it does reveal much about the intended goal of such comments, the advancement of student writing. Looking back on previous research and incorporating a multifaceted approach to revision helps to build sustainable writing instruction. A review of literature of comments suggests placing students in the center of the classroom by enabling students to take control over the revisions of their own work. This process cannot be done without teaching students how to do things with comments and how to use comments to their advantage. Starting from Joseph Harris’ Rewriting, the same steps toward revision which Harris suggests of students should be copied and applied to the way in which instructors facilitate such revision within the classroom. The improvement of student writing requires several steps which target particular issues with the status quo of commenting, and the use of Harris’ text will enable us to identify the steps. Incorporating revision into the classroom, inviting students into conversation about their text, and opening the lines of communication can help improve revision practices in writing classrooms. Through incorporating a new mastery model within the writing classroom, a technique that begins to show students how comments are made and what to do with them, students can begin to internalize the many processes which they can apply to any writing. The teacher’s goal is to help the student internalize the concepts and apply without the direct instruction of the teacher; however, many writing classrooms have lost this focus. If teachers refocus the classroom on the process of writing and even the process of editing and revising, students will become not just stronger students but writers. Adjustments in the writing classroom cannot occur overnight, but incorporating revision techniques into the course will eventually pay off as students learn to revise their work. These techniques, although not new, can prepare students for writing outside the composition classroom.M. A.Includes bibliographical referencesby Roni L. Bie
Dialettica della durata e vita intima. Attualità di Bergson tra accelerazione del tempo e alienazione sociale
No full textIn this paper the Author focuses on the legacy of dialectics through Bergson’s considerations about time and language, recalling two great interpreters of his philosophy: Giuseppe Prezzolini and Gaston Bachelard. If for the former the «philosophy of contingency» enhances the transformation of social reality, preserving, in consonance with Victor Egger’s
book La parole intérieure, the freedom of inner language, the latter proposes a break of the Bergsonian temporal continuity by opting for a plural and discontinuous duration. Thanks to these readings, it is possible to discover the temporal dialectic which regulates contemporary societies, that is, the acceleration of time and the contraction of memory, in order to develop a more humane way of living time and, consequently, to decline the problem of intersubjectivity in an intercultural perspective
Leon Garfield
No full textThrough his historical novels, adventure stories, ghost stories, satires, fairy tales, and retellings of myths and legends, Leon Garfield consistently portrays the mystery of human identity, which he describes as "the only mystery one can unravel endlessly." In this first book-length study of the author of Smith (1967), The Apprentices (1976), John Diamond (1981), and The December Rose (1986), Roni Natov engagingly chronicles the career of a natural storyteller, a man whose work is permeated with the theme of spiritual renewal
PENGGUNAAN MEL-FREQUENCYCEPSTRAL COEFFICIENTSDENGAN DELTADAN DELTA-DELTA DALAM KLASIFIKASI DATA JANTUNG
No full textSaputra, Rico Roni. 2023. Penggunaan Mel-Frequency Cepstral Coefficients
Dengan Delta Dan Delta-Delta Dalam Klasifikasi Data Jantung. Skripsi . Dr. H.
Eko Supraptono, M. Pd. Pendidikan Teknik Informatika dan Komputer, Fakultas
Teknik, Universitas negeri Semarang.
Salah satu tahap yang penting dalam mendiagnosis jantung adalah
klasifikasi. Pada penelitian ini akan mengembangkan penelitian sebelumnya yang
dilakukan oleh (Yusuf & Hidayat, 2019) melakukan ekstraksi MFCC dan
klasifikasi K- Nearest Neighbor dengan sinyal Elektrokariogram (EKG) sebagai
data set, didapatkan data MFCC dengan dengan akurasi 84%, sensitivitas 85% dan
spesifitas 84%. Penelitian sebelumnya meyarankan penggunaan Delta dan Delta�delta guna mendapatkan perbaikan sistem.
Tahap awal yang dilakukan adalah sinyal PCG akan di ekstraksi fiturnya
menggunakan Mel-Frequency Cepstral Coefficients (MFCC) yang dilanjutkan
dengan pengektraksian oleh Delta dan Delta-delta. Terakhir akan diklasifikasikan
menjadi sinyal normal dan sinyal abnormal. Untuk klasifikasinya digunakan
algoritma K-Nearest Neighbor (KNN) dan metode ini kemudian dievaluasi dan
diukur menggunakan metric Accuracy, Precision, Recall, dan F1-score.
Hasil dari penggunaan penggunaan ekstraksi fitur tersebut memberikan
peningkatan yaitu Accuracy sebesar 85%.
Kata kunci— PCG, Detak jantung, Klasifikasi, MFCC,Delta dan Delta-del
Young generations’ hopelessness perpetuates long-term conflicts
No full textFunding Information: The authors would like to thank Roni Porat for their valuable contribution in the conceptualization stage of the research, and Shir Harpaz, Natali Afrimov, and Dan Heskia for their assistance in the data analysis. This work was supported by an Israel Science Foundation Grant (3105/21) to the first author (BSH). Funding Information: The authors would like to thank Roni Porat for their valuable contribution in the conceptualization stage of the research, and Shir Harpaz, Natali Afrimov, and Dan Heskia for their assistance in the data analysis. This work was supported by an Israel Science Foundation Grant (3105/21) to the first author (BSH). Publisher Copyright: © 2023, The Author(s).Transforming long-term conflicts into peaceful intergroup relations is one of the most difficult challenges for humanity. Such meaningful social changes are often driven by young people. But do young people living in contexts of long-term conflicts believe that change is even possible? In a series of six studies (Ntotal = 119,671) over two decades and across two unrelated intractable conflicts in Israel/Palestine and Cyprus, we found that younger (compared to older) generations from both respective rival groups have less hope for peace, and consequently less conciliatory attitudes. We also show that this gradual improvement of peace-promoting emotions and attitudes with increasing age can be experimentally accelerated in young people through a virtual reality-based aging simulation. These findings provide a new perspective on the fundamental question of why long-term conflicts are so difficult to resolve and highlight the importance of instilling hope in young generations to advance peace processes.Peer reviewe
Konsep Wakaf Yang Efektif Dalam Membangun Bangsa
Full text linkIslam has comprehensive concepts and solutions, one of them is for human socio-economic problems, therefore in Islam there are social services such as waqf. Even though Muslims realize that waqf is one of the economic sources, so far only a few have been utilized maximally and productively. There are so many waqf wealth in Indonesia. However, in general its utilization is still traditional consumptive and has not been managed productively, so it has not been right on target in solving people's socio-economic problems. The causes are: 1) Understanding of waqf that is still lacking, 2) Management of waqf that is not optimal, 3) Limited objects that are represented and the end of waqf. For this reason, it is necessary to reformulate how the concept of waqf is effective or the right target according to its function to realize social welfare in developing the nation. Namely by 1) Improving people's understanding of waqf. Endowments according to the Act. no. 41 of 2004 concerning endowments, namely: immovable property (land, buildings / parts, plants and other objects relating to land, ownership rights to units of flats, wells, other immovable property.) And movable assets (money, precious metals, letters valuable, vehicles, intellectual property rights (IPR), rental rights and other movable objects). 2) Empowerment of waqf, waqf assets mentioned above can be empowered to become productive property, profits from productive waqf can be utilized for the benefit of the ummah. 3) Management of waqf based on organizations and legal entities, this can produce professional nazhir, uniform and targeted distribution, innovative and actual fundraising. If this concept is implemented as well as possible, the primary needs of the community will be fulfilled, even social funds will also be available from the management of productive waqf
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