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All Journal ComEngApp : Computer Engineering and Applications Journal Jurnal Ilmu Komputer dan Informasi Lontar Komputer: Jurnal Ilmiah Teknologi Informasi Jurnal Matematika Indonesia Symposium on Computing Indonesian Journal on Computing (Indo-JC) JOIN (Jurnal Online Informatika) Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) JURNAL MEDIA INFORMATIKA BUDIDARMA JMM (Jurnal Masyarakat Mandiri) Visualita : Jurnal Online Desain Komunikasi Visual Charity : Jurnal Pengabdian Masyarakat I-Com : Indonesian Community Journal eProceedings of Engineering Community Service Seminar and Community Engagement (COSECANT)

Putu Harry Gunawan

Telkom University

Author-ID : 518972

Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Public Health Social Sciences Other

Published : 39 Documents Claim Missing Document

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Aproksimasi Non-Uniform Spasial Persamaan Panas 1D dengan Finite Pointset Method Putu Harry Gunawan; Friska Fristella
Indonesia Symposium on Computing Indonesia Symposium on Computing 2015
Publisher : Indonesia Symposium on Computing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Hampiran numerik satu dimensi (1D) dari persamaan panas dengan metoda partikel dijabarkan. Metoda Finite Pointset Method (FPM) digunakan untuk mencari solusi numerik dari persamaan panas. Komparasi hasil numerik FPM dengan hasil numerik metoda beda hingga dan solusi analitik juga diperlihatkan. Hasil solusi numerik metoda FPM diperlihatkan sesuai dengan solusi analitik. Tabel diskrit L^1 -norm eror juga diberikan untuk melihat kekonvergenan solusi numerik terhadap solusi analitik.

Simulasi Iringan Kendaraan Seragam dalam Satu Lajur Rachmad Ryan Feryal; Mahmud Imrona; Putu Harry Gunawan
Indonesia Symposium on Computing Indonesia Symposium on Computing (IndoSC) 2016
Publisher : Indonesia Symposium on Computing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Tujuan dari makalah ini adalah untuk mempelajari model car following pada satu jalur jalanÂ dengan kendaraan seragam. Model yang digunakan dalam penelitian ini disebut sebagai the full velocity difference model (FVDM). Model FVDM merupakan model baru yang dikembangkanÂ dari model terdahulunya yakni optimal velocity model (OVM). Algoritma dari FVDM akanÂ dibahas secara rinci dalam makalah ini. Beberapa percobaan numerik juga diberikan untukÂ melihat perilaku model. Dalam simulasi numerik, dengan memilih tiga posisi kendaraan secaraÂ acak yaitu 53, 46.5 dan 22.2 meter, terjadinya iringan kendaraan yang diperoleh pada saatÂ t = 10 s.

Perancangan Signage Lapangan Gasmin Kota Bandung Soedewi, Sri; Murdowo, Djoko; Wulandari, Ratri; Yuniati, Arnanti Primiana; Gunawan, Putu Harry; Aditsania, Annisa; Adrin, Athaya Fatharani; Prabasworo, Bhanu
Visualita Jurnal Online Desain Komunikasi Visual Vol 9 No 1 (2020)
Publisher : Universitas Komputer Indonesia

The Gasmin Field is a public facility area located in Antapani, Bandung city. This field often uses for general community activities such as sports, gatherings, bazaars, ceremonies, and other activities. The condition of the environment around the Gasmin Field area is not well maintained. The absence of signage makes comfortless and makes it difficult for visitors when they want to find the target area. Therefore, signage and wayfinding designs are needed to make it easier to access locations around the Gasmin Field and increase visitor convenience. Design-based research use as a design method for Environmental Graphic Design (EGD) includes predesign, design, and post-design and data collection. Observations, interviews, and literature studies were carried out to obtain data and analyzed. The results of data analysis used to design signage and wayfinding in the Gasmin Field, Bandung City, West Java.

Shared Memory Architecture for Simulating Sediment-Fluid Flow by OpenMP Putu Harry Gunawan; Ardhito Utomo
Jurnal Ilmu Komputer dan Informasi Vol 12, No 1 (2019): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information
Publisher : Faculty of Computer Science - Universitas Indonesia

Simulation of fluid flow using Shallow water equations (SWE) and sediment movement below it using Exner equation is given. Both of the equations will be combined using splitting technique, in which SWE would be computed using Harten-Lax-van Leer and Einfeldt (HLLE) numerical flux, then Exner would be computed semi-implicitly. This paper elaborates the steps of constructing SWE-Exner model. To show the agreement of the scheme, two problems will be elaborated: (1) comparison between analytical solution and numerical solution, and (2) parallelism using OpenMP for Transcritical over a granular bump. The first problem is going to tell the discrete $L^{1}$-, $L^{2}$-, and $L^{\infty}$-norm error of the scheme, and the second one will show the simulation result, speedup, and efficiency of the scheme, which is around $56.44\%$.

Trough OpenMP Platform for Reducing Computational Time Cost in Underwater Landslide Simulation on Inclined Bottom Putu Harry Gunawan; Fadhil Lobma
Computer Engineering and Applications Journal Vol 8 No 2 (2019)
Publisher : Universitas Sriwijaya

Simulation of underwater landslide becomes important, since underwater landslide phenomena is very dangerous in real life. One of the enormous disasters caused by this phenomena can be a Tsunami. Computer simulation of underwater landslide can reduce cost of time and money from conventional simulation (using laboratory). However, to obtain high resolution of computer simulation, large discrete points should be computed. In this paper, the numerical simulation of underwater landslide using two-layers shallow water equations (SWE) and OpenMP platform is elaborated. Here, the finite volume method framework using upwinding dispersive correction hydrostatic reconstruction (UDCHR) scheme is used. The results of numerical simulation is in a good agreement with the numerical simulation using Nasa-Vof2d numerical scheme. In parallel performance, speedup and efficiency of this numerical simulation are observed 2.8 times and 76% respectively at t=0.8 s final time simulation.

Numerical Simulation of Tsunami Hazard Mitigation by Mangrove Forest in North Coast Bali, Indonesia Putu Harry Gunawan
Jurnal Matematika Vol 5 No 1 (2015)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2015.v05.i01.p51

Mangrove forest or known as bakau forest is important forest as a natural wave barrier or tsunami wave mitigation. Some advantages of mangrove forest to reduce the water waves are already studied. Mangrove forest in north coast of Bali’s island, Buleleng regency, Indonesia is in damaged condition. The aim of this paper is to present the importance of mangrove forest as the water wave mitigation in numerical simulation point of view. Moreover, the results also show the effect of tsunami propagation to the coastal area with and without mangrove resistance. Here, the nonlinear shallow water equations are used to govern the model of numerical simulation.

OpenMP Performance in Numerical Simulation of Dambreak Problem Using Shallow Water Equations Dr. Putu Harry Gunawan
Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol 11 No 1 (2020): Vol. 11, No. 1 April 2020
Publisher : Institute for Research and Community Services, Udayana University

Numerical simulation of water surface waves is widely used to describe water flow and its impact for human life. For instance, numerical simulation of waves is elaborated to simulate Tsunami as an early warning system. Using numerical approach, the study of water flow will reduce cost and save time compared with the conventional approach (in laboratory). Shallow water equations (SWE) is one of the mathematical models which can be used to describe water flow. In numerical simulation of SWE, finite volume method is a robust method to approximate SWE. The result using numerical approach depends on the number of grids. High number of grids then smooth solution can be obtained. However, increasing number of grids leads to the increasing of computational cost. In this paper, parallel computing using OpenMP platform is given in order to reduce computational cost of numerical simulation. In parallel computing performances, Speedup andEfficiency of numerical simulation using 6400 grids points are obtained 4 times and 51% respectively.Moreover, by several numbers of cores from 2 to 8, CPU time of parallel computing is shown decreasing along the increasing number of computer cores.

Pendekatan Numerik pada model Isotropic dan Anisotropic diffusion dalam Pengolahan Citra Iryanto Iryanto; Friska Fristella; Putu Harry Gunawan
Indonesia Journal on Computing (Indo-JC) Vol. 1 No. 2 (2016): September, 2016
Publisher : School of Computing, Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21108/INDOJC.2016.1.2.102

Tujuan dari penulisan ini adalah untuk mempelajari model anisotropic diffusion dan persamaan panas isotropic diffusion pada pengolahan citra. Model anisotropic diffusion disebut sebagai persamaan Perona-Malik yang memiliki berbagai fungsi fluks dalam persamaannya. Untuk menghampiri solusi persamaan anisotropic dan isotropic diffusion secara numerik, metode beda hingga digunakan dalam mendiskritkan domain spasial dan waktu dari model yang digunakan. Hasil numerik menggunakan model anisotropic diffusion menghasilkan gambar yang lebih tajam dibandingkan menggunakan model persamaan panas, dalam hal untuk mempertahankan garis tepi pada citra. Citra yang digunakan dalam penelitian ini adalah citra MRI dan Lena. Hasil pengukuran menggunakan profil histogram dan Peak Signal to Noise Ratio (PSNR) untuk melihat perbedaan masing-masing hasil simualsi numerik. PSNR pada citra MRI dengan menggunakan model isotropic dan anisotropic diffusion berturut-turut didapatkan sebesar 6.1745 dB, dan 6.1833 dB.

Deteksi Kemacetan Lalu Lintas dengan Menggunakan Algoritma Monte Carlo Bagus Gigih Adisalam; Putu Harry Gunawan; Mahmud Imrona
Indonesia Journal on Computing (Indo-JC) Vol. 2 No. 2 (2017): September, 2017
Publisher : School of Computing, Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21108/INDOJC.2017.2.2.174

Sensor dan kamera telah digunakan sekian lama dalam montoring lalu lintas untuk mendeteksi kemacetan lalu lintas. Kemacetan lalu lintas disebabkan karena perkembangan infrastruktur yang lambat tidak sebanding dengan peningkatan jumlah kendaraan. Penelitian ini bertujuan untuk mendeteksi status lalu lintas berdasarkan citra lalu lintas dengan sudut pandang yang berbeda. Citra lalu lintas diolah dengan menggunakan pengolahan citra menjadi 3 kondisi lalu lintas yaitu lancar, ramai, dan padat. Pengolahan citra merupakan metode untuk mengolah citra. Pengolahan citra dilakukan untuk mengubah citra RGB menjadi citra biner sehingga Monte Carlo dapat diterapkan dengan cara menghitung luas dari area piksel putih. Luas area putih pada citra biner digunakan untuk menentukan status lalu lintas. Hasil testing 1 menunjukkan skenario 1 menghasilkan performa terbaik dengan precision ramai bernilai 44%, recall ramai bernilai 77%, precision lancar bernilai 92%, recall lancar bernilai 73%, dan akurasi bernilai 73%. Hasil testing 2 menunjukkan skenario 2 menghasilkan performa terbaik dengan precision padat bernilai 100%, recall padat bernilai 99%, dan akurasi bernilai 99%.Kata Kunci: grayscale, pengolahan citra, segmen gambar, algoritma Monte Carlo, kemacetan lalu lintas, status lalu lintas

Monitoring the Number of Vehicles on Highway Using Frame Difference Method M. Sofyan Bahrum Juniardi; Mahmud Imrona; Putu Harry Gunawan
Indonesia Journal on Computing (Indo-JC) Vol. 3 No. 1 (2018): Maret, 2018
Publisher : School of Computing, Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21108/INDOJC.2018.3.1.202

Indonesia is a country with the third largest motorcycle rider in the world after China and India. One of the biggest cities in Indonesia is Bandung is a city that often experience traffic congestion, especially during peak hours and weekends because of population growth, urbanization and transmigration has increased and not comparable with the growth and development of adequate infrastructure so that frequent traffic jams.In this study, the authors developed a traffic monitoring system to calculate the number of vehicles using the Frame Difference method. To implement the method contained in this paper in calculating the number of vehicles passing on a highway by using two different points of view. The assumption in this research is using static background assumption.Based on the result of the research, it is found that the performance of video from Toll Pasteur with the viewing angle has 8.21% error and Purbaleunyi Toll with vertical angle has 4.43% error by using some filter and morphological operation. Conversely, if without using filters and morphological operations have an error of 175.22% in Pasteur Toll and 115.44% at Purbaleunyi Toll.

Co-Authors Abi Rafdhi Hernandy Ade Romadhony Ade Romadhony Aditya Firman Ihsan Adrin, Athaya Fatharani Agung Ferdiana Agung Toto Wibowo Agung Toto Wibowo Aniq Atiqi Rohmawati Anis Zainia Farabiba Annisa Aditsania Ardhito Utomo Ardhito Utomo Arnanti Primiana Yuniati Bagus Gigih Adisalam Bambang Ari Wahyudi Bambang Pudjoatmodjo Bambang Pudjotatmodjo Bedy Purnama Conny Tria Shafira Dede Tarwidi Deni Saepudin Devi Munandar Didit Adytia Dinda Fitri Irandi Djoko Murdowo Dodi Wisaksono Sudiharto Dodi Wisaksono Sudiharto Ema Rachmawati Ema Rachmawati Ema Rachmawati Fadhil Lobma Fat'hah Noor Prawira Fat’hah Noor Prawira Fat’hah Noor Prawira Fazmah Arif Yulianto Fazmah Arif Yulianto Fenty Alia Fityanul Akhyar Friska Fristella Friska Fristella Gregorius Vito Hasbi Rabbani I Gde Made Bagus Nurseta Wijaya Iryanto Iryanto Jondri _ Lazuardy Azhari Bacharuddin Noor Ledya Novamizanti Lukman Nurwahidin M. Sofyan Bahrum Juniardi Mahmud Imrona Muhammad Arzaki Muhammad Arzaki Muhammad Daffa Dhiyaulhaq Muhammad Hablul Barri Naila Al Mahmuda Nur Nining Aulia Nurul Ikhsan palupi, irma Prabasworo, Bhanu Prawita, Fatâ€™hah Noor Rachmad Ryan Feryal Rajib Sainan Zulkifli Ratri Wulandari Rezqie Hardi Pratama Rifki Wijaya Rimba Whidiana Ciptasari Rimba Whidiana Ciptasari Rita Purnamasari Satria Mandala Selly Meliana Siti Fitria Yonalia Sri Soedewi Tb Dzulfiqar Alhafidh Tora Fahrudin Tyo Revandi Vina Putri Damartya Yoreza Mandala Putra

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