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All Journal JOURNAL ONLINE OF PHYSICS Wahana Fisika : Jurnal Fisika dan Terapannya
Muhammad Rifqi Al Fauzan
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Astronomy Earth & Planetary Sciences Engineering Materials Science & Nanotechnology Physics

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PERBAIKAN ALGORITMA STEGANOGRAFI TEKNIK LEAST SIGNIFICANT BITS UNTUK APLIKASI KEAMANAN DATA Tika Erna Putri; Muhammad Rifqi Al Fauzan; Prima Asmara Sejati
JOURNAL ONLINE OF PHYSICS Vol. 3 No. 1 (2017): JOP (Journal Online of Physics) Vol 3 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.801 KB) | DOI: 10.22437/jop.v3i1.5343

Abstract

Security issues have become major problem in the field of data communications, specifically in the data transmission through the internet. One of the solutions is to hide the messages through a digital media so the attention of the attacker or third party can be avoided, this method is known as steganography. In this research, we use images as digital media. We modify the Least Significant Bit (LSB) which is the most commonly used technique in steganography. Unfortunately LSB has poor security level since it is already widely known technique. Therefore, it is important to modify the algorithm of LSB to ensure its security aspect. An improvement to LSB technique is suggested by selecting only odd pixels and ignoring even pixels in the implementation of steganography. We successfully implement the modified LSB algorithm by using RBG image and grayscale image as steganography media. Mean Squared Error (MSE) and Peak Signal-to-noise Ratio (PSNR) are employed to evaluate the stego-image quality. Our calculations show that the modified LSB algorithm provides better results than the conventional LSB. The conventional LSB algorithm gives 1.98 10-5 for MSE and 95.20893 dB for PSNR calculations, while the modified LSB gives 1. 80 10-5 and 95.6101 dB for MSE and PSNR, respectively.
PROTOTIPE SISTEM KENDALI SUHU DAN KELEMBABAN KANDANG AYAM BROILER MELALUI BLYNK SERVER BERBASIS ANDROID Fitri Puspasari; Imam Fahrurrozi; Trias Prima Satya; Galih Setyawan; Muhammad Rifqi Al Fauzan
Wahana Fisika Vol 3, No 2 (2018): December
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v3i2.14060

Abstract

ABSTRAKAyam broiler merupakan hewan ternak yang memiliki ciri khas pertumbuhan yang cepat dan pertumbuhannya dipengaruhi oleh suhu lingkungan. Kandang merupakan salah satu bagian dari manajemen ternak ayam broiler yang sangat penting untuk diperhatikan, terutama mengenai suhu dan kelembaban. Tujuan penelitian ini adalah membuat prototipe sistem pengukuran besaran fisis berupa pengaturan dan pengukuran  suhu dan kelembaban secara otomatis pada kandang ayam broiler berbasis android untuk memudahkan monitoring. Pada penelitian ini sensor yang digunakan untuk mengukur suhu dan kelembaban dalam sistem monitoring ini adalah sensor DHT11, sedangkan sebagai pengendalinya digunakan Arduino Due. Ketika sensor DHT11 membaca data, maka Arduino akan merekam dan memproses data tersebut. Data pengukuran dapat disimpan dalam bentuk database yang dapat ditampilkan pada halaman aplikasi Blynk  berbasis android.Broiler chickens are livestock that have a characteristic that is fast growth and its growth is influenced by the temperature of the environment. Cage is one part of the management of broiler chickens which is very important, especially regarding temperature and humidity. The purpose of this study was to make a prototype of the physical measurement system in the form of setting and measuring temperature and humidity automatically in an Android-based broiler chicken coop to facilitate monitoring. In this study the sensors used to measure temperature and humidity in the monitoring system are DHT11 sensors, while Arduino Due is used as the controller. When the DHT11 sensor read the data, the Arduino will record and process the data. Measurement data can be stored in the form of a database that can be displayed on Blynk app based on Android.Keywords  :  Temperature; Humidity; DHT11; Arduino due; Android
Co-Authors Galih Setyawan Imam Fahrurrozi Prima Asmara Sejati Puspasari, Fitri Tika Erna Putri Trias Prima Satya