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All Journal Jurnal Ilmu Dasar UNEJ e-Proceeding
Mohammad Hasan
Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Jember
Control & Systems Engineering Education Mathematics

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Digital Image Encryption by Using a Modified Hill Code Sochif Prasetiya; Mohammad Hasan; Kiswara Agung Santoso
Jurnal ILMU DASAR Vol 15 No 2 (2014)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (399.02 KB) | DOI: 10.19184/jid.v15i2.524

Abstract

Data security is very important data needed to stay awake in strict confidence from hacker intrusion or criminals who want to steal the data. Data security methods that are used in this paper is a digital image encryption by using a modified Hill’s code which is done by changing the way of encryption. If we are using Hill’s code then matrix pixel multiplied is the key matrix while on the modification Hill’s code before the key matrix then the matrix is multiplied pixels must be added to the results of the main diagonal elements of the matrix times key. The results obtained in the process of digital image encoding indicating that the image is encoded with password modification results of modified Hill's code more mixed reviews when compared to the image that was encoded with password Hill so that more effective in securing data in the form of a digital image. The size of the image file using the encoding results in a modification password Hill is smaller than ordinary password Hill with a percentage decrease of 4.6 % so more ease in delivery through electronic media Keyword: Digital image, modified Hill code, encryption, description  
THE POTENTIAL OF ORGANIC FERTILIZER FROM KITCHEN WASTE CONTAINING LOCAL MICROORGANISM FOR HOUSEHOLD USAGE Arry Y Nurhayati; Yuda C Hariadi; Moh Hasan
UNEJ e-Proceeding 2022: E-Prosiding Kolokium Hasil Penelitian dan Pengabdian kepada Masyarakat
Publisher : UPT Penerbitan Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The public awareness of environmental management and responsibility for production and consumption of food has increased, leading our collaborators in society to process food waste into organic fertilizer. Food waste management, especially kitchen waste, is a major focus in developing countries due to urban development and an equal attentiveness to environmental sustainability. Turning kitchen waste into organic fertilizer is a solution that is simple, cost-effective, eco-friendly and can be further enhanced by the addition of local microorganisms (MOL). However, the process of producing MOL-enhanced organic fertilizer is still not widely known. In this paper, the organic fertilizer was produced by the decomposition of kitchen waste enhanced by MOL. A non-MOL-enhanced fertilizer was also procured for control. Both of the obtained fertilizers were assessed for parameters such as pH, C:N ratio, and other organic content. The results proved that MOL-enhanced organic fertilizer is more effective than organic fertilizer made by natural decomposition alone. Keywords: Organic_fertilizer; Kitchen_waste; Consumption_Production; Management
Co-Authors Arry Y Nurhayati Kiswara Agung Santoso Sochif Prasetiya Yuda C Hariadi