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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Journal of Applied Geospatial Information JIPF (Jurnal Ilmu Pendidikan Fisika) JRST (Jurnal Riset Sains dan Teknologi) JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Jurnal Pendidikan Fisika dan Teknologi Abdimas Galuh : Jurnal Pengabdian Kepada Masyarakat TECHNO-SOCIO EKONOMIKA Community Development Journal: Jurnal Pengabdian Masyarakat ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Lensa: Jurnal Kependidikan Fisika Jurnal Natural Time in Physics: Journal for Theoretical, Instrumentation, Material-Molecular, and Education Physics
Goldbert Harmuda Duva Sinaga
Universitas HKBP Nommensen
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Neuroscience Nursing Physics Public Health Social Sciences Other

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Coulomb Stress Change of the 2004 Aceh Earthquake on Mount Sorik Marapi 2021 Goldberd Harmuda Duva Sinaga; Martha Rianna Tambunan; Agoez Loeqman; Adhi Wibowo
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n2.p158-170

Abstract

Sorik Marapi is an active volcanic mountain with an altitude of 2,145 meters located in Batang Gadis National Park, Sibanggor Julu Village, Mandailing Natal Regency, North Sumatra, Indonesia. Since the earthquake in Aceh on December 26, 2004, geological conditions in the western part of Sumatra Island have increased in stress. This affects the volcano in Sumatra, Mount Sorik Marapi, so it needs to be studied to find out the condition of changes in coulomb stress in Sorik Marapi. The method used in this study is a descriptive method with an analysis of the coulomb stress method. From the Aceh earthquake year of December 2004 to 2021, Mount Sorik Marapi experienced the highest average increase in coulomb stress in 2012, which was 0.171 bars. The highest average increase in shear in 2015 was 0.25 bars, and the highest average normal increase in 2018 was 0.202 bars. While at depth, Sorik Marapi mountain experienced an average change in coulomb stress highest of 0.368 bars, the average increase in the highest shear by 0.269 bars, and the average normal increase of 0.246 bars. All such increases are at a depth of 90 km below sea level. Based on the results of this study, it is stated that Mount Sorik Marapi experiences inconsistent changes in coulomb stress every year.
TSS Analysis (Total Suspended Soil) Using GEE (Google Earth Engine) Cloud Technology in Belawan Waters Mardame Pangihutan Sinaga; Jono Barita Sianipar; Ady Frenly Simanullang; Goldberd Harmuda Duva Sinaga; Ewin Handoco S; Welmar Olfan Basten Barat
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.v6i2.4317

Abstract

The TSS research using GEE Cloud Technology in Belawan Waters was carried out from January to May 2021. The analysis was carried out using the Sentinel-2 Satellite. TSS results obtained that the amount is 0,011010879-53,74369064 mg/liter. The content of TSS is spread evenly around the outskirts of Belawan Waters to the Middle of Belawan Waters and has passed the quality standard limit according to the Minister of Environment of Republic Indonesia that means the Harbour area is polluted and improper for drinking water as well as for fish cultivation.
PEMBERDAYAAN MASYARAKAT DALAM MENGELOLA LIMBAH HASIL TANI UNTUK MENAMBAH PENGHASILAN PETANI Ady Frenly Simanullang; Goldbert Harmuda Duva Sinaga; Mardame Pangihutan Sinaga
Abdimas Galuh Vol 4, No 2 (2022): September 2022
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v4i2.7624

Abstract

Pengabdian ini bertujuan untuk memberikan informasi dan pelatihan kepada masyarakat Dalam Mengelola Limbah Hasil Tani Untuk Menambah Penghasilan Petani disekitar Kota pematangsiantar, Pengabdian ini telah dilakukan di kota pematangsiantar  khususnya di kantor DPRD dan balaidesa Pematangsiantar beserta dengan masyarakat sekitar pematangsiantar dengan metode tanyajawab dan diskusi.  Dengan adanya pengabdian yang dilakukan dalam hal ini mendapat antusias dari anggota DPRD dan masyarakat yang tertarik dan berminat untuk ikut serta dalam menerapkannya karna masyarakat khususnya para petani belum bisa memanfaatkan limbah hasil tani menjadi  sebuah hal yang bermanfaat dan memiliki nilai ekonomi dan tambahan penghasilan bagi para petani dan masyarakat. Pengabdian yang dilakukan ini juga adalah hasil dari penelitian yang telah dilakukan di dalam laboratorim dan dapat di uji kualitas bahan yang di hasilkan dari hasil penelitian.
Sosialisasi Teknik Pengelasan di SMK Samudera Indonesia Medan Jandri Fan HT Saragi; Tambos August Sianturi; Jhon Sufriadi Purba; Goldberd Harmuda Duva Sinaga
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 3 No. 2 (2022): Juni
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v3i2.640

Abstract

The purpose of this PkM is to provide welding competency skills to SMK Samudera Indonesia Medan students as a provision to enter the job field or for entrepreneurship for SMK and help the productive process of SMKs that lack funding and practicum facilities. The method used to solve the problems that have been formulated, we need a method that must be followed in order to be able to do a good solution, here is the solution method, namely a survey in SMK to get data for PkM as needed, formulate training materials, make a schedule for the implementation of training related to time, arrange instructors who will provide training, make a design evaluation of activities, The implementation of welding training activities was followed by students. The results of the PkM implementation are as follows: Welding skills that can equip vocational students to enter the world of work are being able to operate a welding machine correctly and be able to connect plates using welding. The responses from vocational students with training assistance from the UHKBPNP Mechanical Engineering Study Program are as follows: they are happy because they have received welding skills which they have not done optimally and the teachers hope that next year they can continue with other programs.
Analysis of Coulomb Stress Changes in Aceh Earthquake on Sibayak Volcano Goldberd Harmuda Duva Sinaga; Agoez Loeqman; Ruben Cornelius Siagian; Mardame Pangihutan Sinaga
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 8 No 2 (2022): July-December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v8i2.4409

Abstract

Based on geological conditions, Indonesia is located between the Indo-Australian plate, the Eurasian plate, and the Pacific plate, making Indonesia prone to tectonic earthquakes. However, since the big earthquake that occurred in Aceh on December 26, 2004, the geological conditions in Sumatra have undergone significant changes marked by stressful situations in the western to southern regions of Sumatra, especially on Sibayak Volcano. This study used data from BMKG and Global CMT, which included magnitude (Mw), depth, earthquake coordinates (longitude and latitude), type of earthquake, strike, dip, and rake. From the analysis using Coulomb 3.3, the highest coulomb stress value of Sibayak Volcano was obtained in 2015 with an average change in coulomb stress of 0.235 bar, shear 0.1909 bar, normal 0.1106 bar. However, the lowest coulomb stress value occurs in 2021 with a moderate shift in coulomb stress of 0.0593 bar, shear 0.0251, normal 0.0849 bar.
Non-Linear Regresion And Bisection Method Numerical Analysis of Humidity And Temperature Relationships Lulut Alfaris; Ruben Cornelius Siagian; Budiman Nasution; Goldberd Harmuda Duva Sinaga; Indah Indah
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 8 No 2 (2022): July-December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v8i2.4394

Abstract

This study aims to analyze the correlation of temperature and humidity based on climatological data from Kuningan, West Java province, Indonesia, using non-linear regression and numerical analysis using the bisection method. In studying the education curriculum in Indonesia, most of them have studied linear regression, but only within certain limits, namely linear and multiple. It is still rare for students to use non-linear regression in their analysis. This paper will explain the analysis using non-linear regression as a source of data and equations in numerical analysis so that it can be applied in the context of the numerical bisection method. As for data processing and numerical analysis, Microsoft Excel is used. The authors combined the two variables in the non-linear analysis and used geometric equations for the numerical quotient analysis. The author displays the results of numerical graphs and real-time data obtained from the source "Data access viewer NASA."
The Analysis of Sea Surface Temperature and Containing Water Chlorophyll-A Distribution Using GEE (Google Earth Engine) Code Technology in Sibolga Waters Mardame Pangihutan Sinaga; Jono Barita Sianipar; Ady Frenly Simanullang; Herna Febrianty Sianipar; Ewin Handoco S; Goldberd Harmuda Duva Sinaga
Journal of Applied Geospatial Information Vol 7 No 1 (2023): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v7i1.4739

Abstract

Research on SST and chlorophyll-a content using GEE Cloud technology in Sibolga Waters has been carried out since February-December 2019. The analysis was carried out using the MODIS AQUA-L3SMI satellite. The SST results showed that it spread evenly from the coast of Sibolga to the sea, which was 28-33 0C and did not fluctuate, while the content of chlorophyll-a spread evenly, from February-April with a value of 0,1-1 mg/m3 varied, namely from June-August, and fluctuations namely in October-December 2019 with an amount of 0,5-2 mg/m3. SST spreads evenly, varies, and fluctuates around the outskirts of Sibolga coastal waters to the middle of Sibolga Waters, which is unsuitable for demersal fish species. Meanwhile, the chlorophyll-a content spreads evenly, varies, and fluctuates. The high content of chlorophyll-a in all waters and the high SST will make a certain type of fish that can live, namely carnivorous fish species. Image data can be used to map SST distribution patterns and chlorophyll-a content in Sibolga Waters.
Statistical Data Retrieval Technique in Astronomy Computational Physics Ruben Cornelius Siagian; Pandu Pribadi; Goldberd Harmuda Duva Sinaga; Arip Nurahman; Budiman Nasution
JATISI (Jurnal Teknik Informatika dan Sistem Informasi) Vol 10 No 1 (2023): JATISI (Jurnal Teknik Informatika dan Sistem Informasi)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat (LPPM) STMIK Global Informatika MDP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/jatisi.v10i1.4712

Abstract

Computational astronomy is a very important branch in today's era, where physicists or researchers can use computers to process statistics in astronomical physics. researchers can process abstract data from raw data and can convert data into data visualizations. Computational physics astronomy is a sophisticated and well-established method, this branch of science can provide and process data, solve complex problems, and is very helpful for statisticians and computer scientists. Astronomical physicists have many problems, among others; there is a problem that is hierarchical, and complex, so that this paper will provide a basis for methods for optimizing methods in processing statistical data on physics. The author's hope is that astronomical physicists can perform an important and effective processing of astronomical data optimally and effectively.
EDUKASI DAN PENGEMBANGAN KETERAMPILAN BERBAHASA INGGRIS BERBASIS KURIKULUM MERDEKA DI DESA HUTANAMORA Goldberd Harmuda Duva Sinaga; Toga Simarmata; Ronny Napitupulu; Ezra Octania Sianipar; Rina Kristiana Sitepu; Era Novita Sijabat; Siska Yunita Hutagalung
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 2 (2023): Volume 4 Nomor 2 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i2.13642

Abstract

Pendidikan merupakan salah satu aspek penting dalam kehidupan manusia yang juga telah menjadi suatu kebutuhan dasar. Seiring dengan perkembangan Pendidikan dan teknologi perlu perhatian yang lebih intens berbagai pihak baik orang tua, guru, masyarakat, dan akademisi dalam berkontribusi untuk membantu mengatasi permasalahan tentang keterampilan ber-Bahasa Inggris.Tim telah melaksanakan Pengabdian Kepada Masayarakat (PKM)di Desa Hutanamora Kec. Rianiate Pangururan Kab. Samosir. Kegiatan PKM ini dilaksanakan selama kurang lebih sebulan yang mencakup kegiatan mengajar di sekolah, memberikan les tambahan berupa kerampilan Bahasa Asing untuk tingkat SD dan SMP, dan juga kegiatan PKM tambahan berupa membersihkan lingkungan Desa Hutanamora termasuk pembersihan sumur sumber air bersih warga secara gotongroyong. Kegiatan PKM ini diterima baik oleh masyarakat Desa Hutanamora terlebih pemberian fasilitas yang memadai saat pelaksanaan PKM.
SYNTHESIS AND CHARACTERIZATION OF ENVIRONMENTALLY FRIENDLY PAPERCRETE AS A NEW MORTAR FOR BRICK PANEL INSTALLATION Goldberd Harmuda Duva Sinaga; Ruben Cornelius Siagian; Mia Endang Sari Sinaga; Lulut Alfaris
TECHNO-SOCIO EKONOMIKA Vol 16 No 1 (2023): Jurnal Techno-Socio Ekonomika - April
Publisher : LPPM Universitas Sangga Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32897/techno.2023.16.1.2103

Abstract

This research focuses on the development of lightweight and soundproof building materials using waste paper or pulp as a component, with the aim of improving quality of life and reducing environmental pollution. Papercrete, made from unused waste paper, has environmentally friendly characteristics and can be used as the main structure of buildings. The study investigated the effect of pulp on the stress behavior of panels and tested the reusability of paper as a lightweight and eco-friendly brick material. The research method involved experimental procedures, using specialized equipment and materials to determine the properties and performance of different types of concrete mixes. Results indicate that papercrete has potential as an eco-friendly construction material with physical and mechanical properties suitable for reinforcing brick panels. Further research is recommended to investigate the effect of paper chip size on concrete strength under different humidity and temperature conditions, and to analyze the environmental impact of using papercrete as a construction material. The findings suggest that papercrete holds promise as a new and sustainable construction material. Testing papercrete in real-world scenarios could provide valuable insights into its durability and suitability for different applications.
Co-Authors Adhi Wibowo Ady Frenly Simanullang Agoez Loeqman Agoez Loeqman Analiser Halawa Ariefka, Reza Arip Nurahman Arip Nurahman Aunike Fedora Br Perangin Angin Budiman Nasution Era Novita Sijabat Ezra Octania Sianipar Handoco, Ewin Hebron Pardede Herna Febrianty Sianipar Indah Indah Irving Josafat Alexander Jandri Fan HT Saragi Jaya, Pratama Jono Barita Sianipar Jono Barita Sianipar Juliper Nainggolan juliper nainggolan Limayiana Sihotang Lulut Alfaris Mariana Br Surbakti Martha Rianna Mia Endang Sari Sinaga Mila Susanty Sianipar Morianus Gowasa Muhlis, Dasep nainggolan, juliper Nurahman, Arip Pandu Pribadi Pardede, Hebron Parlindungan Sitorus Pribadi, Pandu Purba, Jhon Sufriadi Purwanto, Romdhon Retno Agung Prasetyo Rina Kristiana Sitepu Rointan Lubis Ronny Napitupulu Ruben Cornelius Siagian Ruben Cornelius Siagian Sahroni, Taufik Roni Sanyosep Rezeki Manalu Siagian, Ruben Cornelius SIANTURI, TAMBOS AUGUST Sinaga, Mardame Pangihutan Siska Yunita Hutagalung SITINJAK, ERNI KUSRINI Toga Simarmata Welmar Olfan Barat, Welmar Olfan