Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

3.79

P-Index

This Author published in this journals

All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Riset dan Kajian Pendidikan Fisika JURNAL FISIKA Jurnal Matematika & Sains Sinergi Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences Phi : Jurnal Pendidikan Fisika dan Terapan Jurnal Spektra JPSE (Journal of Physical Science and Engineering) JIPF (Jurnal Ilmu Pendidikan Fisika) Jurnal Pendidikan Fisika Spektra: Jurnal Fisika dan Aplikasinya Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan THABIEA (JOURNAL OF NATURAL SCIENCE TEACHING) JPMI (Jurnal Pendidikan Matematika Indonesia) Journal of Education and Instruction (JOEAI) Kasuari: Physics Education Journal (KPEJ) Jurnal Teori dan Aplikasi Fisika Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Indonesian Review of Physics (IRiP) Jurnal Riset Pendidikan Fisika IJPD (International Journal Of Public Devotion) PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Indonesian Journal of Physics (IJP)

Sparisoma Viridi

Institut Teknologi Bandung

Author-ID : 444794

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

Published : 51 Documents Claim Missing Document

Claim Missing Document

Articles

2 3 4 5 6

ANALISIS NETWORK DAN GEOMETRI PADA SISTEM GRANULAR DUA DIMENSI Widya Meiriska; Sparisoma Viridi; Dimas P. P. A.; Putri Mustika W.
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 7 (2018): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2018
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Abstrak Pengaturan partikel dan gaya dalam material granular dan materi partikulat memiliki organisasi yang kompleks pada skala spasial. Organisasi seperti ini dapat mempengaruhi bagaimana material merespon atau mengkonfigurasi ulang ketika terkena gangguan atau pemuatan eksternal. Studi teoritis sifat-sifat partikel, force-chain dan domain memerlukan pengembangan dan penerapan kerangka kerja matematis, stastistik, fisika dan komputasi yang tepat. Secara tradisional bahan granular telah diselidiki menggunakan partikel atau model rangkaian yang masing-masing cederung secara implisit. Dewasa ini pengembangan ilmu jaringan (network science) telah muncul sebagai pendekatan yang kuat untuk menyelidiki dan mencirikan arsitektur heterogen dalam sistem yang kompleks dan beragam metode telah menghasilkan wawasan yang menarik kedalam material granular. Dalam studi ini akan meninjau pendekatan berbasis jaringan untuk mempelajari material granular dan mengeksplorasi potensi kerangka tersebut untuk memberikan deskripsi yang berguna dari material granular ini. Serta untuk meningkatkan pemahaman tentang fisis yang mendasarinya. Penelitian dilakukan dengan melakukan simulasi menggunakan program python 3.6. Dari hasil simulasi dan dilakukan analisis network pada material granular (perkembangbiakan koloni ragi) dapat disimpulkan pendekatan berbasis network ini mampu memberikan informasi yang tidak dapat diketahui sebelumnya, bahwa perkembangbiakan koloni ragi tidak dipengaruhi oleh umur dan diameter sel, serta kecenderungan sel anak yang sering berada pada jarak yang cukup dekat dengan sel induk. Kata-kata kunci: Analisis network, jaringan, sistem granular Abstract The arrangement of particles and forces in granular materials and particulate matter has complex organizations on a spatial scale. Such organizations may affect how materials respond or reconfigure when exposed to external interference or loading. Theoretical studies of particle, force-chain and domain properties require the development and application of appropriate mathematical, statistical, physical and computational frameworks. Traditionally granular materials have been investigated using particles or circuit models that are each implicitly. Today the development of network science has emerged as a powerful approach to investigate and characterize heterogeneous architecture in complex systems, and diverse methods have yielded interesting insights into granular materials. In this study will review the network-based approach to study granular materials and explore the potential of these frames to provide a useful description of these granular materials. As well as to improve understanding of the underlying physics. The study was conducted by simulating using python 3.6 programs. From the simulation results and carried out network analysis on granular material (breeding of yeast colonies) it can be concluded that this network-based approach can provide information that cannot be known previously, that the breeding of yeast colonies is not influenced by the age and tendency of child cells that are often at a close distance. With parent cells. Keywords: Complex system, Granular, Network Analysis.

PERUMUSAN GAYA ANTAR BUTIRAN PADA KASUS RANTAI BUTIRAN MAGNETIK TERENTANG HORIZONTAL Aufa Nuâ€™man Fadhilah Rudiawan; Ismi Yasifa; Sparisoma Viridi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 7 (2018): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2018
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Abstrak Magnet kuat, seperti magnet NdFeB, saat ini banyak diproduksi dan dijual dalam bentuk bola (butiran). Bola-bola magnet ini dapat membentuk rantai panjang yang mengingatkan kita kepada sifat mekanik dari tali elastis. Dalam makalah ini akan ditunjukkan perumusan gaya antar butiran pada kasus rantai butiran magnetik terentang horizontal dan kita asumsikan bahwa rantai tersebut menyerupai sebuah tali. Kemudian, ditunjukkan pula sejumlah kasus berbeda dengan menambahkan beberapa bola besi diantara rantai bola magnet. Sampel seperti ini (terdiri dari 2 bahan berbeda) dikenal sebagai bahan komposit. Gaya-gaya yang dilibatkan dalam pemodelan ini yaitu gaya pegas, gravitasi, dan gesek udara dengan menggunakan metode dinamika molekuler. Kata-kata kunci: besi, butiran, gesekan udara, gravitasi, komposit, magnet, pegas Abstract Strong magnet, such as NdFeB, recently produced and sold in the shape of a ball (grain). These magnetic balls can be shaped into a long chain remind us about mechanical properties of elastic string. In this paper will be shown formulation of granular force in the case of magnetic balls chain stretched horizontally and we assumed that the chain as a string. And then also shown some different case by adding some iron balls between magnetic balls chain. A sample like this (consist of 2 different material) known as a composite material. The forces that involved in this modeling are a string, gravitation, and drag force by using the molecular dynamics method. Keywords: composite, drag, grain, gravitation, iron, magnet, string

KERAGUAN MAHASISWA DALAM MENJAWAB PERTANYAAN-PERTANYAAN FISIKA JIKA MEMPEROLEH HASIL BERUPA NILAI YANG MEMILIKI BANYAK ANGKA DI BELAKANG KOMA Nazla Innaya; M. Rizqie Arbie; Sparisoma Viridi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 9 (2020): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2020
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Abstrak Ilmu Fisika merupakan pemahaman mengenai bagaimana alam bekerja. Dengan demikian, manusia dapat mengungkapkan keindahan matematika alam melalui studi fisika. Oleh karenanya, pemahaman ilmu fisika menjadi sangat penting walaupun pembelajarannya dipenuhi dengan ragam tantangan. Penelitian ini mengenai keraguan mahasiswa saat menjawab soal fisika dan memperoleh jawaban dengan angka dibelakang koma yang banyak. Penelitian dilakukan dengan menyebarkan kuesioner online pada 76 mahasiswa di Institut Teknologi Bandung (ITB) setelah perkuliahan fisika selesai untuk mengetahui apa yang dirasakan oleh mahasiswa ketika dihadapkan dengan soal fisika namun memperoleh jawaban dengan angka dibelakang koma yang banyak. Kemudian diperoleh bahwa 62 mahasiswa ragu dengan jawaban dari soal yang mereka kerjakan. 40 Mahasiswa memilih untuk membaca ulang soal dan menganalisis secara logika, dan 22 mahasiswa memilih untuk menghitung ulang.Penelitian ini juga bertujuan untuk memahami bagaimana proses belajar fisika yang terjadi di kelas dan bagaimana mahasiswa menerima materi yang disampaikan dosen. Produk penelitian ini adalah rekomendasi proses pembelajaran fisika sebagai masukan untuk dosen dan mahasiswa. Kata-kata kunci: fisis, fisika, dan keraguan. Abstract Physics is the understanding of how the world work. Thus, People may find beauty mathematics through physics. Physics is a very important field although its learning prosess is challenging. This study is performed by colleting responses from 76 students at Institut Teknologi Bandung via an online qustionnaire. Firstly, we study the confidence level of each student when they are required to provide answer to a problem related to significant figure. We found that 62 students are not confident with their calculated results, 40 students choose to reread the problem, and 22 students choose to redo the problem. Secondly, we analyze student responses to spesific questions related to how one should perform the learning process especially in class. We then design a suitable learning process as a recommendation to both lecturers and students. Keywords: physical, physics, and uncertain.

STUDI ANALISIS PEMBANGKIT LISTRIK DAN DESALINASI AIR LAUT MENGGUNAKAN SOFTWARE DEEP 5.1 PADA ENAM WILAYAH TERPENCIL DI INDONESIA Nazla Innaya; Dwi Irwanto; Sparisoma Viridi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 10 (2022): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2021
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Abstrak Desalinasi merupakan salah satu cara untuk mengurangi masalah kekurangan air di Indonesia. Desalinasi adalah proses menghasilkan air bersih dengan menghilangkan zat-zat terlarut yang ada pada air. Selain permasalahan air, beberapa daerah di Indonesia masih memiliki masalah dalam listrik. Berdasarkan data Statistik Ketenagalistrikan Tahun 2019 dan harga listrik PLN 2017 maka diperoleh setidaknya enam daerah dengan tingkat elektrifikasi rendah dan harga listrik yang tinggi yakni Ambon, Raja Ampat, Toli-Toli, Bau-Bau, Ketapang, dan Kapuas. Di mana harga listrik PLN per 1 kWh daerah Ambon dan Raja Ampat yaitu Rp2.677, Toli-Toli Rp2.255, Bau-Bau Rp2.169, Ketapang Rp1.692, dan Kapuas Rp1.149. Sedangkan harga listrik PLN per 1 kWh di daerah lainnya seperti Jawa Barat hanya Rp911. Oleh karena itu, harus dicari suatu langkah yang dapat menurunkan harga listrik. Untuk mengetahui jenis pembangkit listrik yang sesuai pada berbagai daerah digunakan Desalination Economic Evaluation Program (DEEP) 5.1. Hasil studi memperlihatkan bahwa untuk keenam daerah dapat diterapkan pembangkit listrik bahan bakar nuklir dengan siklus gas (NGC) karena memberikan harga listrik yang murah yakni Rp926,10 per 1 kWh. Untuk desalinasi air pada daerah Ambon, Bau-Bau, Toli-Toli, Ketapang, dan Kapuas dapat diterapkan NGC distilasi MED, dengan harga per 1 m3 secara berurutan yaitu Rp10.895,25, Rp11.468,68, Rp11.468, Rp10.608,53, dan Rp10.751,89. Kata-kata kunci: DEEP 5.1, Desalinasi, dan PLTN. Abstract Desalination is one of the solutions used to reduce water shortages in Indonesia. Desalination is the process of producing clean water by removing dissolved substances in seawater. Apart water problems, several regions in Indonesia still experience problem with access to electricity. Based on data Electricity Statistics 2019 and PLN Electricity Price 2017, there are at least 6 regions with low electrification levels and high electricity prices, such as Ambon, Raja Ampat, Toli-Toli, Bau-Bau, Ketapang, and Kapuas. With the price of PLN electricity per 1 kWh for Ambon and Raja Ampat is IDR 2,677, Toli-Toli IDR 2,255, Bau-Bau IDR 2,169, Ketapang IDR 1,692, and Kapuas IDR 1,149. Meanwhile, the price of PLN electricity per 1 kWh in other areas such as West Java only IDR 911. Therefore, it is necessary to find steps that can reduce the price of electricity. To determine the type of suitable generator for each region used by Desalination Economic Evaluation Program (DEEP) 5.1. The results of study show that for Ambon, Bau-Bau, Raja Ampat, Toli-Toli, Ketapang, and Kapuas can applied gas cycle nuclear power plant (PLTN) as they provide cheap electricity prices of IDR 926.10 per 1 kWh. For water desalination in Ambon, Bau-Bau, Toli-Toli, Ketapang, and Kapuas, a gas cycle nuclear power plant (NGC) with MED distillation at a price per 1 m3 are IDR 10,895.25, IDR 11,468.68, IDR 11,468, IDR 10,608.53, and IDR 10.751.89 in sequence. Keywords: DEEP 5.1, Desalination, and PLTN.

Cooperation Between Dynamic Coefficient of Restitution and Density Ratio in Supporting Granular Gas Oscillation Occurrence Sparisoma Viridi
Indonesian Journal of Physics Vol 18 No 4 (2007): Vol. 18 No. 4, October 2007
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (185.253 KB)

Oscillations in granular gas are observed and experimental results show, that there is a cooperation between dynamics coefficient of restitution and density ratio simultaneously, which decides whether a binary mixture could experience an oscillation or not.

Damped Zigzag Upward Motion of a Ball in Fluid: a Numerical Model Muhammad Nur Tajuddin; Novitrianc Novitrianc; Sparisoma Viridi; Euis Sustini; Veinardi Suendo
Indonesian Journal of Physics Vol 20 No 1 (2009): Vol. 20 No. 1, January 2009
Publisher : Institut Teknologi Bandung

Several types of upward motion of a ball in a cylinder filled with water are observed in experiment such as straight, damped zigzag, and zigzag upward motion. Center of mass of the balls and the way the balls are released play important role to determine the type of occuring upward motion. A simple theoretical model regarding only gravitational force, Stokes drag force, and Archimedes bouyancy force, where the work points of these forces are not coincident, are developed and used to explain the damped zigzag motion.

One Dimension Spring Supported Ball on Top of a Sinusoidal Vibrating Plate: A Forced Oscillation Simulation using Molecular Dynamics Method Sparisoma Viridi; Wahyu Srigutomo; Alamta Singarimbun; Wahyu Hidayat; Sitti Balkis
Indonesian Journal of Physics Vol 22 No 2 (2011): Vol. 22 No. 2, April 2011
Publisher : Institut Teknologi Bandung

A ball supported by a spring is set on top of a plate which is sinusoidal vibrated. The motion is limited to one dimension motion. It is assumed that the spring is an ideal one with zero mass. The vibrating plate is considered much heavier than the ball, so that the ball motion has no influence on the plate motion. Plate vibration frequency is varied around the frequency of ball-spring system. Resonance phenomenon is reported, which needs a phase match condition to occur.

Energy of One-Dimensional Diatomic Elastic Granular Gas:Theory and Molecular Dynamics Simulation Siti Nurul Khotimah; Sparisoma Viridi; Widayani Widayani; Abdul Waris
Indonesian Journal of Physics Vol 22 No 3 (2011): Vol. 22 No. 3, July 2011
Publisher : Institut Teknologi Bandung

One-dimensional ideal diatomic gas is simulated through possible types of motions of its molecule. Energy of each type of its motion is calculated by both theoretical and numerical methods. Analytical calculation of kinetic energy of an atom in translational-vibrational motion is not simple, but it can be solved by numerical method using molecular dynamic simulation. This paper justifies that the kinetic energy of a diatomic molecule can be determined by two different approaches which give the same results. In the first approach, the kinetic energy is calculated as a summation of kinetic energy of each atom. In the second approach, the kinetic energy is calculated as a summation of kinetic energy of translational and vibrational motions.

Permeability and Porosity of Two-Dimensional Porous Media Microchannels using Lattice Gas Cellular Automata Siti Nurul Khotimah; Bergas Bimo Branarto; Sparisoma Viridi; Idam Arif
Indonesian Journal of Physics Vol 23 No 1 (2012): Vol. 23 No. 1, July 2012
Publisher : Institut Teknologi Bandung

In this study, lattice-gas cellular automata were used to solve the flow of incompressible Newtonian-fluid in porous media microchannels. We discuss fluid flow between two stationary parallel plates. By applying a constant pressure gradient, volumetric flux was determined as a function of time until a steady condition is achieved. For steady laminar flow, its velocity profile is parabolic. For flow in porous media between two stationary parallel plates, the results show that medium permeability depends on porosity and obstacle configurations. For a single obstacle, the permeability is a parabolic function with respect to positions of an obstacle in the direction perpendicular to the flow. The permeability is smallest when the obstacle is at the central line along the flow. A maximum permeability may be achieved when the obstacles attached to the channel wall. Other obstacle structures give lower permeability, even zero permeability for dead end microchannels.

Classical Approach for the Fusion Reaction of Deuterium-Tritium Using 2-D Velocity Verlet Method Dani Irawan; Sparisoma Viridi; RIzal Kurniadi; Abdul Waris
Indonesian Journal of Physics Vol 26 No 2 (2015): Vol. 26 No. 2, December 2015
Publisher : Institut Teknologi Bandung

Fusion reaction simulation of two types of nucleon: proton and neutron, is reported in this paper. The interactions between these nucleons are assumed to be only the nuclear force and electrostatic. The modeling is done in a classical approach where molecules formed by the nucleons are being collided with each other. In the model, some parameters were configured to see how these parameters affect the simulation. Some interesting results is that we can find a stable Helium-5 and a neutron-neutron pair as the product of the collision which should not have been possible due to the the quark interactions inside them. This leads us to a conclusion that we need to add a force-model for quark interaction. We do this by using an electrostatic-like force. However using this model, we may end up to instability of the tritium. In this paper we also report a configuration where the neutron-pair is unstable while tritium is stable.

Co-Authors A.A. Ketut Agung Cahyawan W Abdul Waris Ahmad Suryadi, Ahmad Ahmad Swandi Alamta Singarimbun Amalia, Nadya Arief Fauzan Arsyad, Susalti Nur Asdar Asdar Asifa Asri Aufa Nuâ€™man Fadhilah Rudiawan Aufa Numan Fadhilah Rudiawan Bergas Bimo Branarto Budi Dermawan Budi Dermawan Bunga Dara Amin Burhan Burhan Chi-Hung Chang Cut Novianti Rachmi, Cut Novianti Dani Irawan Dasapta Erwin Irawan, Dasapta Erwin Deny Juanda Puradimaja Dewi Muliyati Dimas P. P. A. Dimas Praja Purwa Aji, Dimas Praja Purwa Dwi Irwanto Erkata Yandri Erlina Erlina Euis Sustini Fairusy Fitria Haryani Fauzan, Arief Freddy Haryanto Freddy Permana Zen Hari Anggit Cahyo Wibowo, Hari Anggit Cahyo Hendra, Nadhira Azzahra Hirofumi Notsu Ida Kaniawati Idam Arif Inge M. Sutjahja Iren, Febrianti Ismi Yasifa Ismi Yasifa Jainuddin Jainuddin Juneman Abraham juwita sari Khairil Anwar Khairil Anwar Koji Morata Kurnia Novita Sari Lilik Hendrajaya M. Rizqie Arbie Mamat Rokhmat Mikrajuddin Abdullah Mikrajuddin Abdullah Mikrajuddin Abdullah Mitra Djamal Moch Tanzil Multazam Muhammad Nur Tajuddin Muhammad Taqwin Mukti, Rino Rakhmata Mulyaningsih, Indrya Munir, Rahmawati Munir, Rahmawati Mutahharah Hasyim, Mutahharah Muziibu Alfisyah Nadya Amalia Nadya Amalia Nadya Amalia Natalia Eka Prasetia Nazla Innaya Nazla Innaya Novitrianc Novitrianc Nur Asiah Aprianti Nur Faizin Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Pariabti Palloan Putri Mustika W. Rahmadhanningsih, Sri Rahmayanti, Handika Dany Ramadhani Eka Putra Risky Afandi Putri Risky Afandi Putri Rizal F. Hariadi RIzal Kurniadi Runniarsiti Runniarsiti S. Sutisna Sabaryati, Johri Septian Ulan Dini Siti Nurul Khotimah Siti Nurul Khotimah Siti Nurul Khotimah Sitti Balkis Sri Rahmadhanningsih Sri Rahmadhanningsih Sri Rahmadhanningsih Sri Rahmadhanningsih Sri Rahmadhanningsih Sri Rahmadhanningsih Sutisna, S. Trise Nurul Ain Veinardi Suendo Wahyu Hidayat Wahyu Srigutomo Widayani Widayani Widya Meiriska Zaki Suud

Title

Found 51 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 51 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 51 Documents
Search