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All Journal JITK (Jurnal Ilmu Pengetahuan dan Komputer) JOURNAL OF INFORMATION SYSTEM MANAGEMENT (JOISM)
Tri Waluyo
Universitas Teknologi Yogyakarta
Computer Science & IT

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KAJIAN METODE METODE STEGANOGRAFI PADA DOMAIN SPASIAL Gunawan Wibisono; Tri Waluyo; Erik Iman Heri Ujianto
JITK (Jurnal Ilmu Pengetahuan dan Teknologi Komputer) Vol 5 No 2 (2020): JITK Issue February 2020
Publisher : LPPM Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (803.521 KB) | DOI: 10.33480/jitk.v5i2.1212

Abstract

This paper contains a review of the spatial domain steganographic literature. The purpose of this paper is to provide knowledge about techniques or methods that exist in the spatial domain of steganography. Steganography is the science or technique for hiding secret messages in other messages so that the existence of the secret message cannot be accessed by others who do not have authority. There are several popular spatial domains of steganographic techniques, namely LSB (Least Significant Bit), which is mapping secret message bits in the rightmost bit (LSB) of each color pixel and PVD (Pixel Value Differencing) which in this method offers a larger message storage capacity , with better image quality compared to other methods in the spatial domain. Because privacy issues continue to develop along with various digital communication technologies, and increasingly strong security threats, steganography can play a role in society to maintain the confidentiality of both picture, voice and video messages. For this reason it is important for us to be aware of steganographic technology and its implications.
PREDIKSI PENJUALAN SEPEDA MOTOR HONDA MENGGUNAKAN JARINGAN SYARAF TIRUAN Tri Waluyo; Arief Hermawan; Adityo Permana Wibowo
Journal of Information System Management (JOISM) Vol. 1 No. 1 (2019): Juli
Publisher : Universitas Amikom Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.084 KB) | DOI: 10.24076/joism.2019v1i1.20

Abstract

Prediksi penjualan merupakan salah satu cara untuk meningkatkan laba perusahaan. Peramalan dipergunakan untuk menyeterakan antara perbedaan waktu yang sekarang dan yang akan datang terhadap kebutuhan. Jaringan Syaraf Tiruan (JST) dapat mengaplikasikan dengan baik metode peramalan. Data yang diperoleh dibagi menjadi data pelatihan dan pengujian. Dengan menggunakan berbagai operator di software Rapidminer diperoleh hasil Root Mean Square Error (RMSE) terendah yaitu 45327.969 windowing 12, yang artinya data 12 bulan pertama adalah data yang krusial atau penting sebagai acuan untuk meramalkan/memprediksi penjualan sepeda motor Honda. Perusahaan dapat memprediksi jumlah permintaan konsumen terhadap produk pada tahun berikutnya, selanjutnya ditindaklanjuti ke bagian produksi.
Co-Authors Adityo Permana Wibowo Arief Hermawan Erik Iman Heri Ujianto Gunawan Wibisono