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All Journal JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Jurnal Informatika JuTISI (Jurnal Teknik Informatika dan Sistem Informasi)
Yos Richard Beeh
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Computer Science & IT

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Perbandingan Steganografi Metode Spread Spectrum dan Least Significant Bit (LSB) Antara Waktu Proses dan Ukuran File Gambar M.A. Ineke Pakereng; Yos Richard Beeh; Sonny Endrawan
Jurnal Informatika Vol 6, No 2 (2010): Jurnal Informatika
Publisher : Universitas Kristen Duta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.601 KB) | DOI: 10.21460/inf.2010.62.90

Abstract

Steganografi adalah salah satu cara mengamankan pengiriman pengiriman pesan. Spread spektrum dan least significant bit (LSB) adalah metode steganografi umum yang sering digunakan. Masukan dari proses embedding tersebut akan menjadi file gambar jenis BMP dan JPEG dan file teks, sedangkan keluaran akan menjadi sebuah file teks. Hasil file gambar pembanding antara masukan dan keluaran tidak menunjukkan perubahan yang signifikan, seperti untuk file teks. Metode LSB memiliki proses embedding dan proses ekstraksi lebih cepat daripada spread spectrum. Namun untuk spread spektrum, keamanan lebih baik dibandingkan dengan LSB. Hasil dari proses embedding gambar jenis BMP tidak akan jauh berbeda dari gambar aslinya jika dibandingkan dengan JPEG karena jenis BMP telah dipadatkan.
Aplikasi Reservasi Ibadah Mawar Sharon Salatiga Menggunakan Flutter Davin Kurnia Hiuredhy; Yos Richard Beeh
JATISI (Jurnal Teknik Informatika dan Sistem Informasi) Vol 9 No 3 (2022): 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.v9i3.2161

Abstract

Mawar Sharon Church Salatiga has a congregation of more than 300 people registered in the My GMS application provided by the Mawar Sharon Church in West Surabaya. Due to the Covid-19 pandemic, the number of church seats is limited so that many congregations do not get seats. In this study, the GMS Salatiga Worship Reservation application will be designed based on a progressive web application using the Flutter and Firebase frameworks that utilize a real time database. The existence of this application can facilitate seat reservation at Mawar Sharon Church Salatiga. According to the user acceptance test that has been done, as many as 92% of respondents stated that the GMS Salatiga Worship Reservation application is easy to use and the results obtained are that this application is in accordance with the needs of ordering reservation at Mawar Sharon Church Salatiga.
Aplikasi Android untuk Monitoring Lahan Pertanian secara Realtime Berbasis Internet of Things Jihot Lumban Gaol; Hindriyanto Purnomo; Budhi Kristianto; Radius Tanone; Yos Richard Beeh; Nina Setiyawati; Markus Permadi; Raynaldo Raynaldo; Riko Yudistira
Jurnal Teknik Informatika dan Sistem Informasi Vol 6 No 3 (2020): JuTISI
Publisher : Maranatha University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jutisi.v6i3.3039

Abstract

The development of technology is very helpful in agriculture by using the internet to get the information we need. The problem that farmers think of is that they cannot easily and quickly get information in the form of light intensity, precipitation, soil pH, soil moisture, soil temperature, humidity and air temperature. When farmers get the information they need from agricultural land, they usually get information through the internet so they are considered less efficient as it is quite time consuming. To solve this problem, a system is designed using the research and development method (RnD). A new Android-based application that can display data in text and graphics that are more easily accessible to farmers. This study creates an Android-based mobile application based on tests using the Android interface to display information about agricultural land conditions and display graphical data that is updated every 5 minutes. Keywords— Land monitoring, Agriculture, IoT, Android Mobile Application
Co-Authors Budhi Kristianto Davin Kurnia Hiuredhy Hindriyanto Dwi Purnomo Jihot Lumban Gaol Magdalena Ariance Ineke Pakereng Markus Permadi Nina Setiyawati Radius Tanone Raynaldo Raynaldo Riko Yudistira Sonny Endrawan