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Kekuatan Tarik dan Modulus Elastisitas Bahan Komposit Ramah Lingkungan Berbasis Serat Bambu dan Matriks Asam Poli Laktat Sujito, Sujito
Jurnal Fisika FLUX Vol 9, No 1 (2012): Jurnal Fisika Flux Edisi Februari 2012
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v9i1.3133

Abstract

Dalam makalah ini dibahas sintesis dan sifat mekanik bahan komposit ramah lingkungan berhasil disintesis dari resin asam poli laktat (PLA) dengan penguat serat bambu. Sintesis bahan komposit dilakukan dengan menggunakan tehnik pengepresan campuran antara serat bambu (panjang 10,0 mm, 20,0 mm, 30,0 cm, 40,0 cm, dan 100,0 cm) dan resin PLA, pada temperatur 125OC dan tekanan 140 MPa. Sifat mekanik, kekuatan tarik dan modulus Young, bahan komposit hasil sintesis ditentukan melalui uji tarik dengan menggunakan mesin uji Instron Universal Model 5567 dan kecepatan tarikan 1,0 mm/menit. Adapun dimensi bahan komposit ramah lingkungan untuk keperluan uji tarik ini adalah panjang 100,0 mm, lebar 10,0 mm, dan tebal 2,0 mm. Hasil pengukuran menunjukkan bahwa kekuatan tarik dan modulus Young bahan komposit ramah lingkungan hasil sintesis dipengaruhi oleh panjang serat. Bahan komposit ramah lingkungan hasil sintesis dengan penguat serat bambu panjang 100,0 mm memiliki kekuatan tarik paling besar.
SISTEM PENGONTROL PLAYSTATION OTOMATIS DENGAN MENGGUNAKAN MIKROKONTROLER ARDUINO UNO PADA MEGA GAME PROBOLINGGO Purnomo, Teguh; Sujito, Sujito
JURNAL TEKNOLOGI INFORMASI: Teori, Konsep, dan Implementasi JURNAL TEKNOLOGI INFORMASI: Teori, Konsep dan Implementasi VOL 6 NO 2 TAHUN 2015
Publisher : JURNAL TEKNOLOGI INFORMASI: Teori, Konsep, dan Implementasi

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Abstract

Increased information technology lead to the data processed quickly, precisely, and accurately to produce any information required, as well as in the business world playstation rental. Playing the game is able to sharpen the brain to think, because there are many games available on PlayStation. Starting from the pleasure of the children in the neighborhood of the playstation game, it was established a playstation rental business entity with name mega game. When these tools are used to calculate the time consumption in rental mega playstation games still use the tool manually, by using the TV remote. This causes a loss in the rental mega game because of frequent overtime playstation use the TV remote undetected, causing the user to commit fraud by not paying the excess time.From the results of research conducted can be obtained that the playstation controller automated system using microcontroller arduino uno can provide alternative solutions to the problem and fix the weaknesses of the previous time control systems. Keywords: Control Systems, Microcontroller, Arduino Uno.
APLIKASI SISTEM JUAL BELI SEPEDA MOTOR BERBASIS WEB DI USAHA DAGANG (UD) RUHMA MOTOR Sujito, Sujito; Ruma, Lesa Ahsanti
DINAMIKA DOTCOM DINAMIKA DOTCOM VOL 3 NO 2 TAHUN 2012
Publisher : DINAMIKA DOTCOM

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Abstract

Business competition is increasingly fierce to make entrepreneurs find a way to continue to develop and advance their business. Efficiency in the field of administration and finance of particular concern to employers. UD. Ruhma Motors is one company that handles business in buying and selling motorcycles. Currently, efforts UD. Ruhma Motor is developing that require the accuracy of data in the process of buying and selling. This study aims to establish information system selling motorcycles in UD. Ruhma Motor Web-based using php. Methods of research on the development of this information system using the System Development Life Cycle. This research produces information systems web-based trading that can help business owners to continue to monitor the development efforts. Data motors and customers can always controlled and stored neatly in the administrative database that helps officers to make reports. Keywords: systems, information, buying and selling, UD Ruhma Motor
SIMULASI POLA MEDAN ELEKTROMAGNET PADA PANDU GELOMBANG PERSEGI DENGAN DUA PARAMETER Sujito, Sujito; Lokollo, Richard R; Supadi, Supadi; Samian, Samian; P, Era Budi
Jurnal Neutrino Vol 8, No 1. Oktober (2015): JURNAL NEUTRINO
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.364 KB) | DOI: 10.18860/neu.v0i0.3113

Abstract

Telah dilakukan visualisasi pola medan elektromagnetik 4 moda terendah pada pandu gelombang persegi untuk moda berorde tinggi, yaitu moda TE00, TE01, TE10 dan TE11. Konstanta propagasi sebagai salah satu parameter yang digunakan untuk mengkarakter moda gelombang optik diformulasikan secara semi analitik. Hal ini dikarenakan formulasi konstanta propagasi efektif moda gelombang tidak dapat diturunkan secara eksak. Beberapa bagian dipecahkan menggunakan penyelesaian analitik, sedangkan beberapa bagian diselesaikan melalui analisa numerik secara komputasional dengan menggunakan perangkat lunak Matlab. Analisis karakter pola medan dilakukan dengan menggunakan prinsip Variasional fungsi trial polinom Hypergeometri, sedangkan profil indeks bias berbentuk secant hyperbolik. Analisis menunjukkan bahwa penggunaan berbagai orde moda menunjukkan kesesuaian terhadap metode indeks efektif dan mampu mendeskripsikan pola medan.
PENGEMBANGAN MODEL PEMBELAJARAN PASSING BAWAH BOLAVOLI Sujito, Sujito
JURNAL PENJAKORA Vol 7, No 1 (2020): April 2020
Publisher : Undiksha Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/penjakora.v7i1.24587

Abstract

Penelitian ini bertujuan untuk mengembangkan model pembelajaran passing bawah  bolavoli bagi siswa kelas VII di SMP Negeri 1 Rogojampi - Banyuwangi sehingga bisa membuat peserta didik lebih senang, aktif, kreatif, dan termotivasi untuk bermain bolavoli. Produk yang diharapkan adalah buku panduan model pembelajaran passing bawah  bolavoli. Metode yang digunakan dalam penelitian  ini adalah penelitian pengembangan dengan memodifikasi langkah-langkah penelitian yang sesuai dengan kondisi di lapangan. Pengumpulan data dilakukan dengan menggunakan angket untuk ahli dan siswa. Dengan kualifikasi 2 pelatih bolavoli dan 1 guru pendidikan jasmani, dan untuk ujicoba digunakan  kelompok kecil  10 siswa dan kelompok besar 15 siswa. Hasil yang diperoleh dari penelitian ini menyebutkan bahwa hasil evaluasi ketiga ahli adalah 90,22%, sedangkan hasil evaluasi uji tahap I (uji kelompok kecil) dan uji tahap II (uji kelompok besar) adalah  83,33%. Kesimpulan dari penelitian ini berdasarkan data yang dikumpulkan dari ahli bolavoli, ahli pembelajaran dan siswa saat uji coba tahap I dan ujicoba tahap II dan memperhatikan hasil analisa data yang telah dilakukan, maka semua model pembelajaran layak dan dapat digunakan.
Neural Network Autoregressive For Predicting Daily Gold Price As'ad, Mohamad; Sujito, Sujito; Setyowibowo, Sigit
Inform : Jurnal Ilmiah Bidang Teknologi Informasi dan Komunikasi Vol 5, No 2 (2020)
Publisher : Universitas Dr. Soetomo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25139/inform.v0i1.2715

Abstract

Gold is a precious metal that functions as a gem and also an investment. Gold investment is the reason for many people because it is practical, not easily damaged, easy cashed, not taxable, and other purposes. Based on this, many people choose gold as an investment. The problem for people who will invest in gold is related to uncertain gold price predictions so that the accuracy of forecasting methods are needed. The purpose of this paper is to forecast accurately daily gold prices using the Neural Network Autoregressive (NNAR) method. Training Data to find out the value of accuracy in the NNAR method uses secondary data obtained from Yahoo Finance in the form of daily gold prices. Test results on the NNAR method produce a better and more accurate level using the NNAR (25,13) model with a MAPE value of 0.370707, a MASE of 0.5851083, and an RMSE of 6.939331. The conclusion of the results of this paper is the daily price of gold is influenced by the daily price of gold a day ago to 24 periods ago with the NNAR (25,13) model.
LITHOLOGY INTERPRETATION BASED ON WELL LOG DATA ANALYSIS IN “JS” FIELD Sari, Tri Wulan; Sujito, Sujito
Applied Research on Civil Engineering and Environment (ARCEE) Vol 1, No 01 (2019): Civil and Environment Development
Publisher : POLITEKNIK NEGERI JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/arcee.v1i01.1955

Abstract

Reservoir lithology types in a prospect zone of hydrocarbon can be known through well log data analysis, both qualitatively and quantitatively. Lithology interpretation based on qualitatively well log data analysis, has been successfully carried out by K-1 and K-3 well log data on JS Field, West Natuna basin, Riau Islands.Main focus of the research is types of lithology indicated by response the petrophysical well data log of Lower-Middle Miocene Arang Formation. Arang Formation was deposited immediately on top Barat formation and depositional environment in this formation is transitional marine - marine. Petrophysics log shows well data are log gamma ray, resistivity, neutron porosity, density, and sonic. The limitation of study are on four types lithology, they are coal, sand, sally sand, and shale. Lithology on well K-1 dominate by shale, there is thin intersection between sand and coal. The well of K-1 have sand thickest around six meter. While on well K-3 Petrophysics log data shows thin intersection between coal, sand, shaly sand, and dominated by shale. The thickest Sand have thickness 29 meter, and thicker than on K-1 well. The result in this study, the formation dominated by types of lithology “shale”.