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All Journal Jurnal Ilmu Dasar Journal of Applied Geospatial Information Jurnal Fisika : Fisika Sains dan Aplikasinya Jurnal Teori dan Aplikasi Fisika JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) DIFFRACTION: Journal for Physics Education and Applied Physics PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Jurnal Pengabdian Kepada Masyarakat (JPKM) Lontar Physics Today Alkhidmah: Jurnal Pengabdian dan Kemitraan Masyarakat
Ali Warsito
Universitas Nusa Cendana
Agriculture, Biological Sciences & Forestry Humanities Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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RANCANG BANGUN PROTOTYPE SISTEM AKUISISI CITRA DIGITAL UNTUK PROSES TOMOGRAFI Juan Y. Mandala; Ali Warsito; Laura A. S. Lapono; Andreas Christian Louk
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 6 No 1 (2021): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v6i1.4500

Abstract

AbstrakTelah dirancang sebuah Prototype Sistem Akuisisi Citra Digital Untuk Proses Tomografi dengan menggunakan Arduino Uno. Arduino Uno berfungsi untuk mengontrol putaran pada motor dc saat diberikan nilai kecepatan tertentu. Tampilan hasil dari rekontruksi sistem ini berupa pola lingkaran sebuah citra gambar yang akan ditampilkan pada komputer. Sistem ini telah diuji dan dapat bekerja dengan baik, sehingga dapat melakukan perekaman data citra objek menggunakan kamera usb. Dalam proses perekaman membutuhkan waktu 20 detik, dengan sampel yang diuji yaitu cairan kasumba berwarna biru dengan kekentalan 0.1 ml yang dicampur dengan aquades 10 ml. Dalam perekaman sampel objek menggunakan resolusi 320×240 dan frame rate 30.5 fps. Proses pengujian alat berlangsung di laboratorium Fisika FST Undana. Hasil perhitungan dari data citra gambar, didapatkan nilai radian sebesar 6.28, sudutnya 359.8 dan rotasi/frame 1.25. Dari data yang didapatkan untuk mencapai satu putaran penuh diperoleh gambar sebanyak 286 frame/detik. Dari hasil pengolahan data diperoleh nilai data pusat intensitas yang bervariasi yaitu 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158 dan 159, dengan banyaknya data pusat intensitas 286. Kata kunci: Kamera USB, Motor DC, Arduino UNO, frame, tomografi, kontinyu Abstract A Prototype Digital Image Acquisition System for Tomography Process using Arduino Uno has been designed. Arduino Uno functions to control the rotation of the dc motor when given a certain speed value. Display the results of the reconstruction of this system in the form of a circle pattern of an image that will be displayed on the computer. This system has been tested and can work properly, so it can record object image data using a USB Camera. In the recording process it took 20 seconds, with the sample tested, namely the blue Kasumba liquid with a thickness of 0.1 ml mixed with 10 ml of distilled water. In recording object samples using a resolution of 320 × 240 and a frame rate of 30.5 fps. The process of testing the tools took place at the Undana FST Physics laboratory.The results of the calculation of image data showed that the radian value was 6.28, the angle was 359.8 ° and the rotation / frame was 1.25 °. From the data obtained, to achieve one full rotation, 286 frames / second are obtained. From the results of data processing, it was obtained that the value of the intensity center data varied, namely 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158 and 159, with the number of intensity data centers being 286. Keywords: USB Camera, Motor DC, Arduino UNO, frame, tomography, continuous.
ANALISIS DAMPAK FLARE TIPE X SEPTEMBER 2014 TERHADAP SISTEM NAVIGASI DAN POSISI BERBASIS SATELIT DARI PENGAMATAN GISTM KUPANG Asnawi Husin; Tiar Dani; Ali Warsito
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.904 KB) | DOI: 10.21009/03.SNF2017.02.EPA.11

Abstract

Rapid changes in the ionospheric electron density may cause the satellite signals disturbed, because ionosphere layer is a dispersive medium for radio satellite frequencies. Electron density and ions in the ionosphere increases with increasing of solar activity and will have an impact on the delay of the radio wave propagation from the satellite to the receiver. The delay effects to the level of accuracy of position measurement on navigation satellite systems (Global Navigation Satellite System, GNSS). On September 10, 2014, a class X1.6 of the flare was released at 17:45 UTC, accompanied by a coronal mass ejection (CME). As a result, on September 12, 2014, a strong category of geomagnetic storm occurred. The ionospheric response to the geomagnetic storms has caused a positive storm due to an increase in electron content. Based on TEC measurement by using GISTM Bandung and Kupang, there were an increase of TEC with maximum deviation reached 28 TEC Unit for Bandung station and 35 TEC for Kupang station. The critical frequency of the ionosphere F layer (foF2) also increased during geomagnetic storms, about 4.5 MHz, taken from the ionsonde CADI at Kupang station. Results show the analysis of the absolute position of GPS measurements from fixed GPS station at Darwin Australia during the main phase of geomagnetic storm on September 12, 2014 has caused vertical errors reached more than 20 meters. Keywords: Flare, GNSS, Ionosphere
Analisis Variasi Jumlah Kandungan Elektron Ionosfer Daerah Kupang (10,9°LS 123°BT) Angelikus Olla; Asnawi Husin; Ali Warsito; Yanti Boimau
DIFFRACTION: Journal for Physics Education and Applied Physics Vol 4, No 1 (2022)
Publisher : Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/diffraction.v4i1.5284

Abstract

Ionosfer merupakan bagian dari atmosfer yang mengandung elektron yang dikenal dengan Total Electron Content (TEC) dan berguna untuk propagasi gelombang high frequency. Nilai TEC dapat menyebabkan tunda ionosfer yang berimplikasi pada kesalahan penentuan posisi GPS. Artikel ini menganalisis variasi TEC ionosfer di daerah Kupang (10,9° LS 123°BT), menggunakan data hasil pengukuran GPS Ionospheric Scintillation and TEC Monitor (GISTM). GISTM ini berlokasi di Universitas Nusa Cendana (10,16° LS 123,67°BT), yang diinstal Lembaga Penerbangan dan Antariksa (LAPAN) Bandung. Data yang digunakan dalam penelitian ini adalah data dengan elevasi 30° untuk menghindari efek multipath. Diperoleh bahwa TEC tertinggi terjadi pada bulan equinox yaitu Maret, April dan September dengan maksimum TEC tertinggi terjadi di bulan Maret (73 TECu) sedangkan nilai TEC terendah terjadi di bulan Juli (31 TECu). Selanjutnya, terjadi ketidaksimetrisan peningkatan TEC yaitu untuk bulan equinox September peningkatan VTEC (Vertical Total Electron content) tidak begitu nampak namun lebih nampak pada bulan Oktober dan November yang diduga disebabkan oleh kejadian badai geomagnet kategori sedang. Selain itu, diperoleh bahwa badai geomagnet yang terjadi tanggal 9 November 2013 dengan penurunan indeks Dst hingga -81 nT memiliki dampak terhadap variasi TEC yang ditunjukan dengan terjadinya peningkatan nilai maksimum VTEC hingga 83 TECU dengan simpangan VTEC sebesar 53,61%.
Modeling Accessibility to Emergency Obstetric Care in Mountain Region on Adonara Island, Eastern Indonesia Kalista Ina Dai Nimun; Frederika Rambu Ngana; Ali Warsito; Jehunias Leonidas Tanesib
Journal of Applied Geospatial Information Vol 6 No 2 (2022): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v6i2.4522

Abstract

The geographical conditions of an area influence accessibility problems. The difficult geographical conditions caused travel time to the location of the obstetric emergency center to be very long. One of the causes of the high maternal mortality rate in Eastern Indonesia is the long time to travel to Basic Emergency Obstetrics Cares. This study aims to model the travel time to the PONED-Pelayanan Obstetri Neonatal Emergensi Dasar (Basic Emergency Obstetric and Neonatal Care-BEmONC) in a mountain region. The difficulties in access to obstetric care could cause maternal mortality in mountain regions. This study was done on the island of Adonara in the Flores Timur district. Adonara Island has a high maternal mortality rate. Modeling accessibility used a raster-based model to model travel time. The data used Landsat 8 imagery, Digital Elevation Model (DEM), and road network data to obtain a land cover layer. The Saga GIS travel time calculation tool is used to calculate the accumulated cost of travel time. The cost is based on the speed of travel through each land cover pixel to the location of the Puskesmas Waiwerang (PONED 1) and Puskesmas Waiwadan (PONED 2). The results of the travel time modeling show that people living in five sub-districts reach the two PONED locations in ≥ 1 hour. The longest time for people to travel to PONED is ≥ 6 hours from Ile Boleng sub-district because there is a mountain in the Ile Boleng sub-district. The scenario of adding one PONED shows that only people living in two sub-districts reach the PONED ≥ 1 hour. This spatial modeling of travel time to the location of the PONED (emergency obstetric care) can be used by local governments in eastern Indonesia to improve access to the location of basic obstetric emergency health centers in mountain areas.
VISUALISASI FENOMENA HARMONIS DAN CHAOS PADA GETARAN TERGANDENG BERBASIS KOMPUTASI NUMERIK RUNGE KUTTA Leonora L. R. Trifina; Ali Warsito; Laura A. S. Lapono; Andreas Ch. Louk
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v8i1.11817

Abstract

Research has been carried out on the visualization of harmonic and chaos phenomenont on coupled vibration physcal case using the Runge Kutta numerical computation method with the aim of applying the first to fourth order Runge Kutta computation method to obtain a second order differential equation solution on coupled vibration system, calculating the displacement value of objects using computation method Runge Kutta order first to fourth, obtained a graph of the displacement of objects againts time in case of coupled vibration for harmonic and chaos states at certain step width values and compare the convergence of the Runge Kutta method from first to fourth order with the special analytical method. The solution of coupled vibration equation which is classified as a second order differential equation was quite difficulted to solve analytically, so the Runge Kutta computation method was used to solve it as an alternative solution. The results of the research showed that the harmonic state of the system was obtained when the displacement graph showed the motion of each pendulum which was constant with the pendulum displacement position with respect to time in the form of a sinusoidal graph at a value of C1 = 40 N/m, C2 = 30 N/m, C = 10 N/m, C = 0 N/m and the chaotic state was represented by a graph of the displacement of the pendulum with respect to time with an irregular pattern. In this case, it was found that the fourth order Runge Kutta method converged faster than the first to third order Runge Kutta method with the best results obtained at a step width value of 0,001. The fourth order Runge Kutta method also has a smaller approximation average error value from first to third order Runge Kutta method was on the fourth order Runge Kutta method and the avarage error values are , and on the Runge Kutta method of first to third order.
ESTIMASI SEBARAN AIR LINDI BAWAH PERMUKAAN BERDASARKAN DATA ELEKTROMAGNETIK PADA AREA TEMPAT PEMBUANGAN AKHIR (TPA) NOINBILA KABUPATEN TIMOR TENGAH SELATAN Hadi Imam Sutaji; Hery Leo Sianturi; Ali Warsito
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v8i1.11827

Abstract

This research study is the determination of estimated distribution of subsurface leachate based on electromagnetic data in the Noinbila Final Disposal Site (TPA) area and its surroundings in South Central East Regency. The data used in the form of conductivity and susceptibility values ​​of the measurement results of the GF instrument CMD-4 at coordinate points at certain elevations. The data is processed and displayed in 2D and 3D contour maps with the help of several related software. The results of the analysis provide information that the Noinbila landfill area and its surroundings which are divided into areas A, B, C, D, E and F are not all polluted by leachate below the surface, but only areas D and F are suspected to be polluted. The potential for contamination of areas A, B, C and E below the surface is still possible because these areas have subsurface geology in the form of coral limestone. The potential for this pollution, apart from below the surface, is also possible on the surface because areas A, B, C and E have a lower elevation dominance than areas D and F. For this reason, this potential must be avoided by optimally handling and managing waste. If the handling and management of the waste is related to the efforts of the Noinbila TPA management, then it has been done even though it is still not optimal. The form of handling efforts as a form of waste management is in the form of matters related to the maintenance and repair of the TPA and its facilities and infrastructure, handling of waste before and after at the TPA and leachate water flow through pipelines to the holding pond, stabilization pond and leachate treatment pond.
RESPON TRANSIEN TERAPAN METODE PID DALAM PROSES PENGISIAN MUATAN PADA RANGKAIAN RLC Roswitha Lilyana Moensaku; Laura A. S. Lapono; Ali Warsito
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 7 No 2 (2022): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v7i2.9349

Abstract

Telah dilakukan simulasi proses pengisian muatan pada rangkaian RLC. Penelitian ini merupakan studi simulasi yang bertujuan untuk mengontrol proses pengisian muatan pada rangkaian RLC sehingga proses pengisian berjalan lebih cepat dan stabil. Simulasi ini dilakukan menggunakan simulink Matlab dengan menerapkan variasi metode PID (PD, PI dan PID) dan memperhatikan variasi-variasi nilai konstanta proporsional (Kp), konstanta integral (Ki) dan konstanta derivative (Kd). Hasil simulasi yang diperoleh menunjukkan bahwa kontroler dengan menggunakan variasi metode PD dan PID dapat menunjukan kestabilan sistem yang lebih baik. Sistem dari variasi kontroler PD dan PID yang dilakukan benar-benar stabil tanpa adanya overshoot berturut-turut memiliki nilai konstanta (Kp=105 dan Kd=3104) dan (Kp=103, Ki=10 dan Kd=4102) dapat memberikan respon sistem berturut-turut (RT =0,008 s, ST =0,0098 s, SS Error dan G(s)= 1) dan (PID RT=0,008 s, ST=0,0098 s, G(s)=1, dan SS Error=0). Hasil ini merupakan hasil dari respon sistem yang stabil dan paling baik bila dibandingkan dengan kombinasi nilai-nilai kostanta yang lain.
Sistem Alat Ukur Detak Jantung Dan Nafas Manusia Menggunakan Arduino Uno Andreas Nggaba Ngabi; Ali Warsito; Jonshon Tarigan
Lontar Physics Today Vol 1, No 1 (2022): Februari 2022
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/lpt.v1i1.10309

Abstract

This research was conducted by identifying one of the problems that exist in the world of health, namely monitoring human health conditions in real time and automatically. The purpose of this study is to realize an Arduino Uno-based instrumentation tool by utilizing a heart rate sensor and respiratory frequency in humans in overcoming these problems. The research method applied is to measure health conditions by determining two indicators of the measured object of research, namely heart rate and breathing frequency. As comparison data, measuring instruments are used in determining the accuracy of the instrumentation made. Based on the measurement results from nine samples of health condition data, the results for the heart rate were 3.33 BPM with an accuracy of 96.67%, and the results for the respiratory frequency were 2.4 X/min with an instrument accuracy of 97.60%. With these results, it is concluded that the instrumentation made is accurate enough to be used as an additional means of monitoring health conditions in real time and automatically..Keywords: Arduino Uno,  Heart rate, breathing frequency
KAJIAN KEADAAN TERMODINAMIK GAS ARGON MODEL GAS IDEAL, VAN DER WAALS, SONG MASON, DAN BEATTIE BRIDGEMAN BERDASARKAN KOMPUTASI NEWTON RAPHSON Kartika Dwi Putri; Ali Warsito; Andreas Ch Louk
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 2 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

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

Abstract

Telah dilakukan kajian komputasi keadaan termodinamik gas argon berdasarkan variasi P,V dan T dengan tujuan memperoleh formulasi komputasi numerik Newton Raphson terhadap model Gas Ideal, Van Der Waals, Song Mason dan Beattie Bridgeman, mendapatkan pola perubahan keadaan termodinamika didasarkan pada terapan keempat model serta memperoleh tingkat akurasi solusi dari implementasi metode Newton Raphson didasarkan pada solusi analitik. Solusi dari keempat persamaan keadaan tersebut secara analitik bisa saja dilakukan, namun akan membutuhkan waktu yang lebih lama dan cukup sulit sehingga digunakan metode komputasi Newton Raphson sebagai solusi alternatif. Hasil penelitian menunjukkan penggunaan keempat model untuk perhitungan nilai tekanan, volume dan temperatur (P-V-T) dengan memberikan asumsi nilai massa untuk senyawa Argon m = 3 kg, dengan P = 744 kPa, V = 0,2 m3 dan T= 250 memberikan solusi yang akurat. Konvergensi metode Newton Raphson menuju solusi cepat dengan hasil yang didapat sesuai dengan perhitungan secara analitik. Error relatif maksimum metode analitik maupun metode numerik, pada toleransi error
ACCUMULATED COST SURFACE UNTUK PEMODELAN WAKTU TEMPUH KE LOKASI PONED DI KABUPATEN MANGGARAI BARAT Semidi, Eufrasia Serjiana; Ngana, Frederika Rambu; Sutaji, Hadi Imam; Warsito, Ali
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 2 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v8i2.13588

Abstract

Salah satu indikator yang mempengaruhi terjadinya kasus kematian ibu di kabupaten Manggarai Barat adalah aksesibilitas ke lokasi Puskesmas Pelayanan Obstetri Neonatal Emergensi Dasar (PONED). Tujuan penelitian ini adalah memodelkan waktu tempuh ke Puskesmas Lembor dan Puskesmas Labuan Bajo yang merupakan Puskesmas yang memiliki fasilitas PONED di Kabupaten Manggarai Barat menggunakan accumulated cost surface. Accumulated cost surface adalah perhitungan raster dari cost (biaya) perpindahan suatu objek pada permukaan tutupan lahan. Pada penelitian ini, tutupan lahan merupakan overlay dari peta vegetasi dengan sumber data citra Landsat 8, peta jaringan Sungai dibuat menggunakan digital elevasi model (DEM) dan peta jaringan jalan. Proses pemodelan waktu tempuh dilakukan dengan menggunakan accumulated cost-surface pada tool travel time calculation di SAGA GIS. Untuk validasi hasil model waktu tempuh, digunakan Google Maps. Hasil pemodelan waktu tempuh menunjukkan bahwa jumlah desa dan kelurahan di kabupaten Manggarai Barat yang menjangkau Puskesmas PONED < 1 jam pada musim hujan lebih sedikit daripada musim kemarau. Pemodelan waktu tempuh digunakan untuk menganalisa keterjangkauan puskesmas PONED terhadap pemukiman masyarakat terutama di daerah terpencil dengan kondisi aksesibilitas yang buruk.
Co-Authors Abdul Wahid Abdul Wahid Adrianus Marselus Seran Andini Dengak Andreas Ch Louk Andreas Ch. Louk Andreas Christian Louk Andreas Nggaba Ngabi Angelikus Olla Ari Bangkit Sanjaya Umbu Asnawi Husin Asnawi Husin Asnawi Husin Asnwi Husin Bernandus Bernandus Bernandus, Bernandus Candra Satrio Umbu Luba Christine Mbiliyora Djati, Hyronymus Edon, Caro David Hadel Frederika Rambu Ngana Fredy M. Baitanu Freinademetz Anggur Haning, Ady E.P Harison Nubatonis Hery L. Sianturi Husni Husni Ismail, Eddy H. Johannes, Albert Zicko Jonshon Tarigan Jonshon Tarigan Juan Y. Mandala Kalista Ina Dai Nimun Kartika Dwi Putri Keszya Wabang Laura A. S. Lapono Leonia M. F. B. Da Silva Leonora L. R. Trifina Lewi Jutomo M. Leng Margaretha F. Cherly Martianus Kurnia Martince Aryani Jusuf Kaba Minsyahril Bukit Muntasir, Muntasir Natbais, Yuyun Hana Nuryanti Nuryanti Olin, Fransisco Rokirianto Pasangka, Bartholomeus Pingak, Redi Kristian Richard Umbu Datangeji Roci N. Piubati Roswitha Lilyana Moensaku San Arnolus Kain Semidi, Eufrasia Serjiana Sutaji, Hadi Imam Tanesib, Jehunias Leonidas Tarigan, Jonshon Thomas A. W. Ceme Tiar Dani Valerianus Jehadu Vonnete Mieva Mayer Lusi Yanti Boimau Zakarias Seba Ngara