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All Journal Seminar Nasional Aplikasi Teknologi Informasi (SNATI) JURNAL SAINS PERTANIAN EQUATOR Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Folia Medica Indonesiana Jurnal Kelautan Tropis Omni-Akuatika Jurnal Universitas Paramadina Loquen: English Studies Journal Kurios Jurnal Ilmiah Profesi Pendidikan Jurnal Riset Jakarta Jurnal Chart Datum G-Tech : Jurnal Teknologi Terapan Jurnal Syntax Imperatif : Jurnal Ilmu Sosial dan Pendidikan Indonesian Andrology and Biomedical Journal TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES (TIRES) Jurnal VOICE Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Integrasi : Jurnal Ilmiah Teknik Industri Journal of Education Sciences (Edusci) Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Open Access DRIVERset
Agustinus Agustinus
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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PENGGUNAAN TYPE JIGSAW DALAM ILMU PENGETAHUAN ALAM UNTUK MENINGKATKAN HASIL BELAJAR SISWA SEKOLAH DASAR Agustinus, Agustinus; Kresnadi, Hery; Asran, Mastar
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 7, No 3 (2018): Maret 2018
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

The purpose of this research is to know how the use of cooperative learning jigsaw type in science learning to increase students? learning outcomes. The method of this research is action classroom research. The subject of this research is fourth grade students of SD Negeri 03 Bengkayang. This research is done in three cycle where in each has one phase: preparation, implementation, observation, and reflection. Technique of data collecting in this research is IPKG I, IPKG II, and evaluation. Technique of analysis data used is qualitative and quantitative. Based on the data analysis, teacher ability on planning and implementing of science learning is improved. In the first cycle, the score of teacher ability on planning is 2.16 point, 2.82 point, and the third cycle is 3.72 point. Meanwhile, on the teacher implementation, the score in the first cycle  is 1.76 point, the second cycle is 2.92 point, and the third cycle is 3.93 point. The result of students? evaluation is 42.42% students get 62.42 in the first cycle, 66.67% students get 68.78, and 100% students get 75.75. In conclusion, jigsaw type can improve students? learning outcomes in science learning. Keywords : Improving,  Jigsaw Type, Learning Outcomes 
Analisis Sistem Transmisi Pada Mobil Hemat Energi Asykar Prototype Gasoline Terhadap Konsumsi Bahan Bakar Agustinus, Agustinus; Syafri, Syafri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

In design of a vehicle that is comfortable and safe while driving and to improve work performance on a vehicle, there are a number of things to consider, namely the steering system, brakes, suspension and transmission system. In this research, the writer will design and analyze the transmission system in Asykar Proto Gasolin Energy Saving Vehicle. The study began by searching for car specification data, Asykar Proto then calculating the center of gravity, then calculating the car speed at each gear ratio in the transmission system, measuring fuel consumption, calculating the mileage on each gear, calculating net traction force, designing the transmission system such as shafts, bearings, sprockets, chains and analysis. From this research, we will find what fuel consumption and distance can be achieved in 1 liter of fuel by Asykar Proto Gasolin Energy Saving Vehicle.Keywords : transmission system, Asykar Proto Gasolin Energy Saving Vehicle, car mileage in 1 litre of fuel
VOLUME PERDAGANGAN, FREKUENSI PERDAGANGAN, ORDER IMBALANCE DAN VOLATILITAS HARGA SAHAM Agustinus Agustinus
Jurnal Universitas Paramadina Vol 10 No 2 (2013)
Publisher : Universitas Paramadina

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Abstract

AbstractStock price volatility reflects the risk dan opportunity gained by investors. Investors need to pay attention on indicators in technical analysis that will affect stock prices volatility, such as trading volume, trading frequency, and the absolute difference between demand volume and supply volume, known as order imbalance. This study is aimed at examining the effect of trading volume, trading frequency, and order imbalance on stock price volatility.The population of the study is all public firms listed at Indonesian Stock Exchange for periods of 2009-2010. Sample is determined using purposive sampling where the selected sample firms are not those conducting stock split, stock dividend, and right issue during the study periods.The results show that trading volume and order imbalance do not affect stock price volatility, whilst trading frequency affect negatively stock price volatility. The coefficient for trading frequency is in the opposite direction as it is expected to have positive sign.Keywords: trading volume, order imbalance, trading frequency, stock price volatility.
Analisis dan Perancangan e-Supply Chain Management (Studi Kasus: PT. Prima Rezeki Pertiwi) Rudy Rudy; Agustinus Agustinus; Adi Chandra; Zara Elisabeth Tanring
Seminar Nasional Aplikasi Teknologi Informasi (SNATI) 2008
Publisher : Jurusan Teknik Informatika, Fakultas Teknologi Industri, Universitas Islam Indonesia

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Abstract

Tujuan dari penelitian ini adalah untuk menganalisis supply chain management yang ada di PT. Prima RezekiPertiwi serta merancang aplikasi berbasis web untuk menerapkan E-Supply Chain Management. Metode yangdigunakan adalah metode analisis dan perancangan e-SCM. Metode analisis yang digunakan mencakuppreliminary steps (tahapan pendahuluan) dalam pengembangan e-SCM. Sedangkan metode perancanganmenggunakan pengembangan strategi e-SCM, perancangan customer service management, manufacturing andsupply chain planning, supplier relationship management, logisctic resource management serta arsitektur e-SCM yang dibutuhkan. Hasil yang dicapai adalah rancangan suatu sistem e-SCM yang mampu meningkatkanproduktifitas perusahaan melalui otomatisasi informasi antara partner dalam supply chain, mengurangi biayaoperasional penyimpanan barang serta mengintegrasikan informasi diantara divisi dalam perusahaan. Denganmenerapkan sistem e-SCM dalam PT. Prima Rezeki Pertiwi, diharapkan terjadi peningkatan produktifitasdengan mengefektifkan proses supply chain yang berjalan dan mengefisiensikan biaya operasional yangdikeluarkan.Keywords: Informasi, e-Supply Chain Management, SCM, Aplikasi, WEB
Pengaruh Penempatan Blade Turbin Propeller Di Tengah Blade Turbin Venturi Terhadap Performa Turbin Hybrid Agustinus Agustinus; Iwan Kurniawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Wind turbines are windmills that are used to generate electricity. The basic principle works, namely converting the mechanical energy from the wind into rotational energy, then the rotation of the mill is used to rotate the generator, which in turn will generate electricity. Over time, many turbine innovations have been used. Innovation can be done by fixing existing deficiencies or adding new things so that these products have additional functions. In this research, innovations were carried out in wind turbines. That is, two different types of turbines are combined into one, namely a combination of a conventional turbine (propeller) and a wind ball energy (venturi) turbine. This innovation is made so that the hybrid turbine can work and function at low wind speeds. This research is intended to determine the performance of this hybrid turbine by placing the propeller blade in the middle of the venturi turbine blade and varying the ratio of the length of the turbine propeller blade to the diameter of the venturi turbine. So that the right size and maximum results are obtained in the manufacture of this hybrid turbine. Key words: Hybrid Turbine, Propeller Turbine, Venturi Turbine.
Jumlah Optimal Bahan Baku “Pempek DODO” Single Item Single Supplier dan Multi Item Single Supplier Zerlinda, Ivana; Agustinus, Agustinus; Dwi, Dwi; Alfonsus, Alfonsus; Sunarni, Theresia
Integrasi : Jurnal Ilmiah Teknik Industri Vol 5, No 1 (2020): Integrasi: Jurnal Ilmiah Teknik Industri
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/js.v5i1.2975

Abstract

Persediaan bahan baku yang baik dapat membuat perusahaan tidak kekurangan bahan baku dan biaya yang dikeluarkan juga optimal. Adapun UKM Pempek DODO yang memiliki bahan baku yang lebih dari satu jenis. Selama ini pemesanan bahan baku selalu dilakukan setiap 2 kali sekali dalam satu minggu sehingga dalam satu tahun sekitar melakukan pemesanan selama 96 kali. Oleh karena itu ada baiknya pemesann bisa diminimumkan agar biaya dapat lebih dioptimalkan Salah satu metode yang dapat digunakan adalah EOQ (Economic Order Quantity). Karena ada bahan baku yang satu jenis dan memiliki satu supplier maka menggunakan metode EOQ single item single supplier. Sedangkan bahan baku yang memiliki kesamaan supplier menggunakan metode EOQ multi item single supplier. Dengan metode ini diharapkan dapat mengetahui jumlah pemesanan dan frekuensi optimal pada setiap bahan baku dengan asumsi tanggal kadarluarsa diabaikan. Maka hasil dengan metode EOQ total biayanya sebesar Rp 327.756.675,5 yang berarti menghemat biaya sebesar Rp 3.755.300.
FACTORS AFFECTING DECISIONS OF FARMERS USING CREDIT UNION (CU) KELING KUMANG AS FINANCING INSTITUTIONS OF FARMING IN DESA PIAWAS KECAMATAN BELIMBING HULU KABUPATEN MELAWI Agustinus Agustinus; Jajat Sudrajat; Adi Suyatno
Jurnal Sains Pertanian Equator Vol 8, No 2 (2019)
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jspe.v8i4.36372

Abstract

Keling Kumang Credit Union Cooperative is a savings and loan financial institution for the community in Piawas Village. This study aims to analyze the decision-making factors of farmers using (CU) as a source of farming finance. Data were analyzed using logit regression method. The results of this study indicate that total income, family expenses and the number of dependents do not have a significant partial effect on decisions. Factors that influence farmers' decisions are Education Level. Keywords: Financing, Farming, Member Decision, and Logit Regression
ANALYSIS OF PARABOLIC EQUATION (RAMGEO) PROPAGATION MODEL IN NORTH NATUNA SEA Agustinus, Agustinus; Manik, Henry Munandar; Sukoco, Nawanto Budi; Muharrom, Eka Yudha; Supriyanto, Taufiq
TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES Vol. 3 No. 3 (2024): JULY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/tires.v3i3.1264

Abstract

The waters of the North Natuna Sea are one of Indonesia's conflict-prone maritime areas, frequently traversed by foreign vessels due to its direct border with several neighboring countries, necessitating effective maritime security assurance. To ensure this security, meticulous sea control and surveillance, particularly through the utilization of monitoring tools such as SONAR to detect foreign objects traversing or entering the North Natuna Sea waters, are required. This research aims to analyze the characteristics of underwater acoustic wave propagation patterns, particularly in the formation of silent areas or Shadow Zones, using the Parabolic Equation method (RAMGeo). Parabolic Equation propagation model (RAMGeo) simulations are conducted utilizing the AcTUP v2.2L Toolbox. Temperature and salinity data against depth obtained from Marine Copernicus for one year are utilized in this study, spanning from January 1, 2023, to December 31, 2023, encompassing both the west and east monsoon seasons. Sound propagation velocity calculations are based on the empirical Medwin equation, with a focus on a source depth of 10 meters at frequencies of 100 and 1,000 Hz in the North Natuna Sea. Simulation results indicate that both the west and east monsoon seasons exhibit similar and dense underwater acoustic wave propagation patterns. At a frequency of 100 Hz, the Transmission Loss ranges between 30 to 60 dB, with Shadow Zone areas extending from 0 - 500 meters and from 500 - 1,500 meters. Meanwhile, at a frequency of 1,000 Hz, the Transmission Loss ranges between 30 to 70 dB, with almost no Shadow Zone area present.
Deteksi Pipa Kabel Bawah Laut Menggunakan Metode Magnetometer dan Side Scan Sonar di Perairan Ancol: Detection of Undersea Cable Pipes Using the Magnetometer and Side Scan Sonar Methods in Ancol Coastal Waters North Jakarta Agustinus, Agustinus; Kurniawan , Muhammad Aziz; Manik , Henry Munandar
Jurnal Riset Jakarta Vol. 16 No. 1 (2023): Jurnal Riset Jakarta
Publisher : Dewan Riset Daerah (DRD) Provinsi Daerah Khusus Ibukota (DKI) Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37439/jurnaldrd.v16i1.80

Abstract

Pendeteksian jalur pipa kabel yang terletak di perairan Ancol Jakarta Utara merupakan suatu hal yang penting untuk mencegah kerusakan pada pipa kabel tersebut. Dalam penelitian ini, digunakan teknologi Magnetometer dan Side Scan Sonar untuk mendeteksi jalur pipa kabel yang terletak di perairan Ancol Jakarta Utara. Metode Magnetometer digunakan untuk mendeteksi medan magnetik yang dihasilkan oleh pipa kabel di bawah laut sedangkan metode Side Scan Sonar digunakan untuk menghasilkan gambaran visual permukaan dasar laut dan mendeteksi objek yang ada di dalamnya. Data yang diperoleh dari kedua metode tersebut kemudian diproses dan dianalisis menggunakan software Oasis Montaj dan SonarWiz. Hasil penelitian menunjukkan bahwa metode Magnetometer dapat menunjukkan target berdasarkan nilai anomali yang tinggi diyakini sebagai target sedangkan hasil Side Scan Sonar tidak dapat menunjukkan keberadaan pipa kabel bawah laut dikarenakan pipa kabel laut yang ditanam pada dasar laut.
Karakteristik Kolom Air di Titik Penyempitan (Choke Point) Selat Makasar: Characteristics of the Water Column at the Choke Point of the Makassar Strait Supriyanto, Taufiq; Agustinus, Agustinus; Rahmatullah, Amri; Pranowo, Widodo Setiyo; Triono, Yoyok
Jurnal Chart Datum Vol. 10 No. 1 (2024): Jurnal Chart Datum
Publisher : Sekolah Tinggi Teknologi Angkatan Laut (STTAL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/chartdatum.v10i1.328

Abstract

Titik Penyempitan (Choke Point) Selat Makassar adalah salah satu wilayah laut Indonesia yang memiliki potensi ancaman besar, termasuk temuan objek asing di dalam kolom air seperti ranjau dan drone bawah air. Penelitian ini bertujuan untuk mengeksplorasi karakteristik kolom air, khususnya lapisan termoklin yang diindikasikan sebagai wilayah persembunyian atau Shadow Zone, dengan kedalaman 0 hingga 300 meter di Titik Penyempitan Selat Makassar. Data suhu dan salinitas terhadap kedalaman yang diperoleh dari Marine Copernicus selama 1 tahun, dari 16 Desember 2019 hingga 16 Desember 2020, digunakan dalam penelitian ini. Selanjutnya, perhitungan kecepatan rambat suara dilakukan berdasarkan persamaan empiris Medwin, dan lapisan termoklin ditentukan dengan ciri gradien suhu perkedalaman sebesar 0,1ºC untuk setiap pertambahan kedalaman satu meter. Visualisasi data menggunakan software ODV 5.6.2 untuk menganalisis karakteristik kolom air terutama suhu, salinitas, dan kecepatan suara di lapisan termoklin. Hasil penelitian menunjukkan bahwa lapisan termoklin, yang berada pada kedalaman 78 hingga 130 meter, memiliki suhu berkisar 20,2 °C sampai 28,2 °C, salinitas 33,75 ‰ sampai 34,25 ‰, dan kecepatan suara 1525 m/s sampai 1540 m/s, dengan ketebalan lapisan termoklin sekitar 52 meter yang diindikasi sebagai daerah persembunyian atau Shadow Zone.
Co-Authors Adi Chandra Adi Suyatno Aldri Frinaldi Alfonsus, Alfonsus Anak Agung Gede Sugianthara Angellee, Jesselyn Asmoro, Nuki Widi Aucky Hinting Azhari, Ferian Bambang Purwanto Choirul Umam, Choirul Dwi, Dwi Eliana Sari, Eliana Elis, Elis Timang Enos Tambing Hartanto, Markus Christian HASAN MADANI Hendra Hendra Henry M. Manik Hery Kresnadi Jajat sudrajat Karnati, Neti Kurniawan , Muhammad Aziz Kurniawan, Muhammad Azis La Ode Musa Manik , Henry Munandar Mastar Asran Mickael Ruben Kaiway Muharrom, Eka Yudha Narulita, Pety Nurhajati Nurhajati Pradana, E Pramesti, MPBD R., Agustina Rahmatullah, Amri Rantepulung, Selyus Regina Retnowati, Anis Rombe Allo Rudy Rudy Suharyani, Sally Sukoco, Nawanto Budi Sulle, Yosef Supriyanto, Taufiq Syafri, Syafri Theresia Sunarni Tri Aji Triono, Yoyok Wardah Widodo S Pranowo William William Yudiwati, Rina Zara Elisabeth Tanring Zerlinda, Ivana