8 results for “R. R. Darwish”

Research ArticleOpen accessIn the author namesNew Model-Based Fault Detection Approach using Black Box ObserverM. Abdullah Eissa, R. R. Darwish, A. M. BassiunyMost of the emerging engineering systems lack the presence of explicit physical insights or prior knowledge that clearly depicts the model. In such cases, the conventional observer-based fault detection is difficult to be employed because of its observer gain tuning. Herein, black box behaviors arose as a promising trend that could overcome those challenges that appears due to lacking the … …Journal of Mechatronics and Robotics, Vol. 3, Issue 1 · 15 Mar 2019 · 6,613 accessesView PDF Cite

Research ArticleOpen accessIn the author namesEvidences for the Role of Melatonin as a Protective Additive During Buffalo Semen FreezingMohamed El-Raey, M. R. Badr, Z. M. Rawash, G. M. DarwishTill now, the exact role of melatonin in male infertility hasn’t been fully discovered. Moreover, the intracellular signaling pathways activated by melatonin in buffalo spermatozoa especially on the level of cryopreservation process haven’t been reported. The current study aimed simply to clarify the precise role of this hormone during buffalo semen cryopreservation. Semen samples were obtained randomly from 6 fertile … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 4 · 23 Dec 2014 · 8,112 accessesView PDF Cite

Research ArticleOpen accessIn the author namesMultimodal Face and Ear ImagesA.A. Darwish, R. Abd Elghafar, A. Fawzi AliProblem statement: The study presented in this study to combined face and ear algorithms as an application of human identification. Biometric system to the detection and identification of human faces and ears developed a multimodal biometric system using eigenfaces and eigenears. Approach: The proposed system used the extracted face and ear images to develop the respective feature spaces via the … …Journal of Computer Science, Vol. 5, Issue 5 · 30 May 2009 · 7,225 accessesView PDF Cite

Research ArticleOpen accessIn the author namesMathematical Attacks on RSA CryptosystemImad K. Salah, Abdullah Darwish, Saleh OqeiliIn this paper some of the most common attacks against Rivest, Shamir, and Adleman (RSA) cryptosystem are presented. We describe the integer factoring attacks, attacks on the underlying mathematical function, as well as attacks that exploit details in implementations of the algorithm. Algorithms for each type of attacks are developed and analyzed by their complexity, memory requirements and area of … …Journal of Computer Science, Vol. 2, Issue 8 · 31 Aug 2006 · 8,420 accessesView PDF Cite