Articles
<![CDATA[Comparing Models GRM, Refraction Tomography and Neural Network to Analyze Shallow Landslide ]]>
<![CDATA[Sompotan, Armstrong F.]]>;
<![CDATA[Pasasa, Linus A.]]>;
<![CDATA[Sule, Rachmat]]>
<![CDATA[ Journal of Engineering and Technological Sciences Vol 43, No 3 (2011) ]]>
Publisher : <![CDATA[ITB Journal Publisher, LPPM ITB ]]>
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DOI: 10.5614/itbj.eng.sci.2011.43.3.1
<![CDATA[Detailed investigations of landslides are essential to understand fundamental landslide mechanisms. Seismic refraction method has been proven as a useful geophysical tool for investigating shallow landslides. The objective of this  study is to introduce a new workflow using neural network in analyzing seismic refraction data and to compare the result with some methods; that are general reciprocal method (GRM) and refraction tomography. The GRM is effective when the velocity structure is relatively simple and refractors are gently dipping. Refraction tomography is capable of modeling the complex velocity structures of landslides. Neural network is found to be more potential in application especially in time consuming and complicated numerical methods. Neural network seem to have the ability to establish a relationship between an input and output space for mapping seismic velocity. Therefore, we made a preliminary attempt to evaluate the applicability of neural network to determine velocity and elevation of subsurface synthetic models corresponding to arrival times. The training and testing process of the neural network is successfully accomplished using the synthetic data. Furthermore, we evaluated the neural network using observed data. The result of the evaluation indicates that the neural network can compute velocity and elevation corresponding to arrival times. The similarity of those models shows the success of neural network as a new alternative in seismic refraction data interpretation.]]>
<![CDATA[Comparing Models GRM, Refraction Tomography and Neural Network to Analyze Shallow Landslide ]]>
<![CDATA[Armstrong F. Sompotan]]>;
<![CDATA[Linus A. Pasasa]]>;
<![CDATA[Rachmat Sule]]>
<![CDATA[ Journal of Engineering and Technological Sciences Vol. 43 No. 3 (2011) ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Institut Teknologi Bandung ]]>
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DOI: 10.5614/itbj.eng.sci.2011.43.3.1
<![CDATA[Detailed investigations of landslides are essential to understand fundamental landslide mechanisms. Seismic refraction method has been proven as a useful geophysical tool for investigating shallow landslides. The objective of this study is to introduce a new workflow using neural network in analyzing seismic refraction data and to compare the result with some methods; that are general reciprocal method (GRM) and refraction tomography. The GRM is effective when the velocity structure is relatively simple and refractors are gently dipping. Refraction tomography is capable of modeling the complex velocity structures of landslides. Neural network is found to be more potential in application especially in time consuming and complicated numerical methods. Neural network seem to have the ability to establish a relationship between an input and output space for mapping seismic velocity. Therefore, we made a preliminary attempt to evaluate the applicability of neural network to determine velocity and elevation of subsurface synthetic models corresponding to arrival times. The training and testing process of the neural network is successfully accomplished using the synthetic data. Furthermore, we evaluated the neural network using observed data. The result of the evaluation indicates that the neural network can compute velocity and elevation corresponding to arrival times. The similarity of those models shows the success of neural network as a new alternative in seismic refraction data interpretation.]]>
<![CDATA[PPM LATIHAN KERJA BAGI MASYARAKAT TENTANG DISAIN DAN KONSTRUKSI BAJA RINGAN DI KOTA MANADO ]]>
<![CDATA[Heindrich Taunaumang]]>;
<![CDATA[Amstrong F Sompotan]]>
<![CDATA[ ABDIMAS: JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 13, No 3 (2020): ABDIMAS: JURNAL PENGABDIAN KEPADA MASYARAKAT ]]>
Publisher : <![CDATA[LPPM UNIMA ]]>
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DOI: 10.36412/abdimas.v13i3.3105
<![CDATA[Perkembangan penggunaan material/bahan bangunan rumah dengan menggunakan material logam seperti atap seng berbasis baja ringan, gantungan baju, lemari, rak cepatu dll semakin pesat karena dengan menggunakan material tersebut lebih tahan lama dan relatif lebih cepat pekerjaan diselesaikan. Namun demikian pengerjaan konstruksi bangunan/rumah/garasi dengan atap seng atau gantungan baju, lemari, rak cepatu dll berbasis baja ringan diperlukan pengetahuan tentang material, disain dan konstruksi serta ketrampilan dalam pembuatannya. Masyarakat di Kelurahan Titiwungen Selatan, Kecamatan Sario Kota Manado kalah bersaing dalam mengerjakan konstruksi bangunan/rumah dengan atap seng berbasis baja ringan karena mereka hanya terbiasa dengan mengerjakan atap seng berbasis kayu (konstruksi dengan bahan kayu). Disamping kekurangan tentang pengetahuan disain dan konstruksi atap seng, gantungan baju, lemari dan rak cepatu dengan baja ringan mereka juga belum memiliki ketrampilan serta peralatan seperti bor-elektrik. Dengan demikian mereka kurang berdaya dan kehilangan peluang kerja sehingga sangat berdampak pada masalah ekonomi/pendapatan keluarga. Oleh karena itu melalui pengabdian kepada masyarakat yang dibiayai oleh LPPM Unima ini kami ingin melaksanakan kegiatan pengabdian dengan judul : “PPM LATIHAN KERJA BAGI MASYARAKAT TENTANG DISAIN DAN KONSTRUKSI BAJA RINGAN DI KOTA MANADO Tulisan ini kiranya boleh memberikan kontribusi nyata memecahkan persoalan dalam mengatasi persoalan ketrampilan tenaga kerja di Kota Manado khususnya di Kelurahan Titiwungen Selatan, Kecamatan Sario. Kami percaya melalui kegiatan latihan kerja bagi masyarakat akan berhasil dan bemanfaat karena kerjasama Perguruan Tinggi (Unima), masyarakat Kelurahan Titiwungen Seatan, Kecamatan Sario dan pemerintah Kota Manado.]]>
<![CDATA[Aplikasi Teknologi Pendingin dan Penerang Berenergi Solar Cell untuk Meningkatkan Produktivitas Nelayan Tradisional Pulau-Pulau Kecil di Kabupaten Kepulauan Talaud ]]>
<![CDATA[Armstrong F. Sompotan]]>;
<![CDATA[Janne D. Ticoh]]>;
<![CDATA[Revolson A. Mege]]>;
<![CDATA[Stralen Pratasik]]>;
<![CDATA[Quido C. Kainde]]>;
<![CDATA[Walter Balansa]]>
<![CDATA[ Jurnal Aplikasi dan Inovasi Iptek Vol 4 No 1 (2022): Jurnal Aplikasi dan Inovasi Iptek No. 4 Vol. 1 Oktober, 2022 ]]>
Publisher : <![CDATA[Denpasar Institute ]]>
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DOI: 10.52232/jasintek.v4i1.84
<![CDATA[Suatu kegiatan pengabdian kepada masyarakat melalui skema Program Kemitraan Masyarakat (PKM) telah dilaksanakan dalam upaya mengatasi masalah utama dan klasik dihadapi mitra yaitu ikan hasil tangkapan mudah mengalami kerusakan dan tidak segar lagi dipasarkan akibat proses pengawetan konvensional yang hanya menggunakan pendingin dari Es ditempatkan dalam box stirofoam dan tidak bertahan lama sudah mencair. Demikian halnya ketika melaut pada malam hari untuk penerangan menggunakan mesin diesel maupun lantera, terkadang terkendala pada bahan bakar minyak yang tidak tersedia, dan jika tersedia dengan harga yang mahal menyebabkan biaya operasional meningkat dan tidak jarang merugi ketika hasil tangkapan hanya sedikit. Melalui kegiatan PKM telah diaplikasi teknologi pendingin dan lampu untuk penerangan perahu dan lampu celup untuk menarik ikan yang bersumber energi solar cell dirancang dalam perahu nelayan. Metode pendekatan yang diterapkan yaitu kombinasi metode pembelajaran orang dewasa (Andragogik) dengan pendekatan ceramah, diskusi, pelatihan dan pendampingan tim dosen. Hasil kegiatan yang dicapai: (1) telah terfasilitasi pemasangan satu unit pendingin di atas perahu motor mitra berenergi solar cell, (2) terfasilitasi pemasangan instalasi dan lampu untu penerangan dan lampu celup untuk menarik ikan pada perahu mitra bersumber energy dari solar cell; (3) Meningkatnya pengetahuan dan keterampilan mitra dalam penggunaan pendingin dan lampu penerang dan lampu celup berenergi solar cell]]>
<![CDATA[ANALISIS PERGERAKAN TANAH BERDASARKAN PEAK GROUND VELOCITY (PGV) AKIBAT GEMPA BUMI DI LUWUK ]]>
<![CDATA[Lingkan Mantiri Paat Timbuleng]]>;
<![CDATA[Armstrong Sompotan]]>;
<![CDATA[Farly R Tumimomor]]>
<![CDATA[ Charm Sains: Jurnal Pendidikan Fisika Vol 1 No 2 (2020): JUNI ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado ]]>
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DOI: 10.53682/charmsains.v1i2.16
<![CDATA[Central Sulawesi is located between the boundaries of tectonic plates which are interconnected with one another. Some tectonic plates are located near Central Sulawesi, including the Indo-Australian plate, the Pacific plate, and the Eurasian plate. The interaction of these plates causes the formation of subduction and fault lines as locations that have the potential to become the center of an earthquake. Earthquakes at scale specific strength can cause infrastructure damage and fatalities. This has led to the importance of erecting earthquake resistant buildings based on the characteristics of ground motion which is Peak Ground Velocity and Ground Motion Prediction Equation method. The purpose of this study is to see the pattern of the relationship between Peak Ground Velocity and earthquake parameters, make an empirical equation of Peak Ground Velocity predictions and see the gorund motion in the Luwuk area with coordinate 2,5 °LS – 1,5°LU dan 119°BT - 127°BT used the Peak Ground Velocity and Ground Motion Prediction Equation method. The result shows the pattern is directly proportional to the relationship between earthquake parameters and the Peak Ground Velocity, and for the empirical equation obtained is log (PGV) = -3.8873 + 1.026975 x M – 1.34171 x log (R +17).]]>
<![CDATA[PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) DENGAN METODE DEMONSTRASI UNTUK MENINGKATKAN HASIL BELAJAR SISWA SMP NEGERI 4 SATAP LIKUPANG BARAT ]]>
<![CDATA[Truly Daniel]]>;
<![CDATA[Armstrong Sompotan]]>;
<![CDATA[Jeferson Polii]]>
<![CDATA[ Charm Sains: Jurnal Pendidikan Fisika Vol 2 No 3 (2021): OKTOBER ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado ]]>
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DOI: 10.53682/charmsains.v2i3.126
<![CDATA[This study aims to improve student learning outcomes. After following the learning process using the Problem Based Learning (PBL) learning model. This research was conducted at SMP Negeri 4 Satap Likupang Barat for the 2019-2020 academic year. The research method used was classroom action research (CAR) which was conducted in two cycles. Each cycle consists of four stages, namely, planning, implementation, observation and reflection. The subject of this research is class VIII, which consists of 18 students. The research instrument used is questions. KKM achievement has increased, namely the average student learning outcomes in cycle 1 of 55.5%. And increased in cycle 2 to 83.3%. This clearly shows that student learning outcomes have increased from cycle 1 to cycle 2. Thus, cycle 2 has met the indicators of achievement of results.]]>
<![CDATA[EFEKTIVITAS PEMBELAJARAN INOVATIF MENGGUNAKAN POWTOON TERHADAP HASIL BELAJAR SISWA PADA MATERI TEKANAN ZAT DI SMP NEGERI 2 DUMOGA ]]>
<![CDATA[Nurul Pratiwi]]>;
<![CDATA[Armstrong Sompotan]]>;
<![CDATA[Jimmy Lolowang]]>
<![CDATA[ Charm Sains: Jurnal Pendidikan Fisika Vol 4 No 2 (2023): JUNI ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado ]]>
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DOI: 10.53682/charmsains.v4i2.250
<![CDATA[This study aims to determine the effectiveness of the use of powtoon learning media on science learning outcomes, especially the substance pressure material for class VIII A students at SMP Negeri 2 Dumoga. The type of research used in this research is experimental research with a pre-experimental research design in the form of a one group pretest posttest design, with a quantitative research approach. In this study, the sample was taken using a total sampling technique with class VIII A as the research sample. The results of the study, it showed that: (1) the average score of student learning outcomes after the application of powtoon learning media was 86.4286 while before being given treatment it was 64.5714. (2) there is an increase in student learning outcomes after applying powtoon learning media by obtaining an average gain value of 0.7342 which is in the high criteria. As for the n-gain percent obtained 73.4177 which is in the criteria of being quite effective. (3) the result of the t-test with the paired sample t-test is 0.01, which means that is accepted. From the results of this study it can be concluded that the use of powtoon learning media is effective for science learning outcomes on substance pressure material for class VIII students of SMP Negeri 2 Dumoga.]]>
<![CDATA[POLA PERUBAHAN HARIAN SUHU AIR DAN KECEPATAN ARUS DI SEKITAR GUNUNG API BAWAH LAUT MAHENGETANG ]]>
<![CDATA[Stivano Mamarama]]>;
<![CDATA[Armstrong Sompotan]]>;
<![CDATA[Farly Tumimomor]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 2 (2020): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i2.91
<![CDATA[Indonesia an archipelago with 70% of the territorial waters stretching from the western end of Sumatra Island to the east of the Papua region, with the characteristic of the vast ocean of underwater structures in the Indonesian archipelago is also important to be discussed deeper. For that the underwater volcano research is very rare. This undersea research has been implemented and is a collaborative research study with DRPM's beginner lecturer SCHEME research with the title of Master of Umbrella research "The analysis and modeling of Temporal changes and partial fraction of the sea water temperature at the Mahengetang underwater volcano". Involving 3 UNIMA students. The expedition was held from 20 to 22 March 2019. Where one of the objectives of this research is to obtain the data on water temperature fluctuations and the current speed of the underwater volcano Mahengetang has shown the pattern of water temperature and the current velocity of sea water from the upstream and downstream transect. From the results of analysis and modeling showed that the hydrodynamics factor and geothermal energy. The results of the hydrodynamics analysis indicate that the current velocity relies on tidal activity. The results of analysis and modeling show that water temperature varies horizontally and vertically. The velocity of currents and the masses of warm water are associated with the pattern of spatial distribution of coral reefs. The results of this PHISYCS analysis became a reference to the content of water chemicals, and biotic components such as coral reefs and various biota that live in it.]]>
<![CDATA[KOREKSI LOKASI HIPOSENTRUM GEMPABUMI DI SULAWESI UTARA MENGGUNAKAN METODE MODIFIED JOINT HYPOCENTER DETERMINATION ]]>
<![CDATA[Sike Suwuh]]>;
<![CDATA[Armstrong Sompotan]]>;
<![CDATA[Sixtus Umboh]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 1 No 2 (2020): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v1i2.95
<![CDATA[North Sulawesi is one of the areas that has had a fairly high level of seismic activity that has occurred, due to the position of North Sulawesi Island which is located close to the earthquake source. One of the parameters of an earthquake that can be calculated is the earthquake hypocenter.Determining the hypocenter of an earthquake is very important in the world of seismology. The Modified Joint Hypocenter Determination (MJHD) method was carried out for relocation of the earthquake hypocenter. To find out how the results of the Hypocentrum Location Correction using MJHD and the tectonic pattern of the Sulawesi Sea Plate subduction zone. . The results of relocation using the MJHD (Moodifide Joint Hysopcentrum) method showed better and more accurate data quality seen from the residual value (RMS) before (≥1 s) and after relocation (≤1 S). Based on the seimicity results of relocation using the MJHD method, it was found that the earthquake clusters were concentrated at a shallow depth of the range of 20 - 80 km. At a depth of 250 - 300 and a distance of 400 km, there is a seimic gap so that earthquakes rarely occur in this zone.]]>
<![CDATA[PENGARUH PERUBAHAN BEBAN TERHADAP EFISIENSI GENERATOR DI UNIT 2 PLTP LAHENDONG ]]>
<![CDATA[Mince Manguma]]>;
<![CDATA[Armstrong Sompotan]]>;
<![CDATA[Jeilen Nusa]]>
<![CDATA[ Jurnal FisTa : Fisika dan Terapannya Vol 2 No 2 (2021): OKTOBER ]]>
Publisher : <![CDATA[Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado ]]>
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DOI: 10.53682/fista.v2i2.139
<![CDATA[Indonesia is a country that is located on the ring of fire or a volcanic route that is rich in geothermal potential. Geothermal is a renewable resource that is environmentally friendly by utilizing magma from the bowels of the earth. PLTP Lahendong unit 2 is a generating unit located in the city of Tomohon, North Sulawesi, which is capable of generating 20 MW of electrical energy. In a generator one of the most important components is the generator. There are many problems that can affect the work of the generator, for example, the reduced efficiency of the generator. Declining efficiency can affect the electrical energy that is flowing not optimally due to generator losses, and a lot of electricity is lost because of this. Therefore, it is necessary to analyze the efficiency of the generator to see whether or not the effect of the load generated by the generator has an effect on the efficiency of the generator. The results of the study which were then analyzed for 14 days between 09:00 and 21:00 obtained the calculation results which were then analyzed that the lowest load value generated by the generator was 12 MW with generator efficiency of 72% and the highest load value was 19 MW with efficiency of 93% and obtained an average load of 16MW with an efficiency difference of 21%. This shows that the value of the load generated by the generator affects the efficiency of the generator. From the results above, it can be recommended to the related company for further action.]]>
