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Issue DateTitleAuthor(s)
9-Jun-2008Reiterated homogenization applied in hydrodynamic lubricationAlmqvist, A.; Essel, E K; Fabricius, J; Wall, P
2006Reiterated homogenization of a cavitation problem in thin films mechanicsMartin, S.
2015Positive periodic solutions for neutral functional differential systemsYankson, Ernest
2010Positive periodic solutions in neutral delay difference equationsRaffoul, Youssef N.; Yankson, Ernest
2011Positive solutions for a system of periodic neutral delay difference equationsYankson, Ernest
2008Refined multidimensional hardy-type inequalities via superquadracityOguntuase, J. A.; Persson, L.-E.; Essel, E. K.; Popoola, B. A.
2012Positive periodic solutions for second-order neutral differential equations with functional delayYankson, Ernest
2018Periodicity in multiple delay volterra difference equations of neutral typeYankson, E.
2015The digital image data transmission and storage in today’s cyberspace has increase with privacy and security concerns. Digital media collected from different sources such as surveillance systems, forensic databases, medical images are very sensitive hence security concerns regarding the safe transmission and authentication of such digital data across secured and unsecured communication channels needs to be addressed. This security to such images should be easily used to identify the source, detect modification and secure the content of the image as well as avoiding pixel loss during the original image recovery process. In this paper, we proposed a hybrid image cryptographic encryption and digital watermarking technique for the encryption and authentication of digital image content. The image encryption was done on the RGB channels and the spatial watermarking was successfully applied to the RGB-colour bands of the digital image and this rendered the watermark visibly subtle and difficult to detect under regular viewing. The digital watermarking technique was engaged to authenticate the image and detect modifications to the watermarked image. The watermark visibility and detection was difficult to detect and the image was successfully reconstructed without any loss of pixel value after decryption. The programming and implementation was done using MATLAB. Keywords- Cryptography, digital image, Encryption, Watermarking, pixel, authenticationQuist-Aphetsi, Kester; Laurent, Nana; Pascu, Anca Christine; Gire, Sophie; Eghan, Jojo M.; Quaynor, Nii Narku
2020A maturity estimation of bell pepper (capsicum annuum l.) by artifcial vision system for quality controlVillaseñor-Aguilar, Marcos-Jesús; Sánchez-Bravo, Micael-Gerardo; Padilla-Medina, José-Alfredo; Vázquez-Vera, Jorge Luis; Guevara-González, Ramón-Gerardo; García-Rodríguez, Francisco-Javier; Barranco-Gutiérrez, Alejandro-Israel

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