Mohamed G. Darwish

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This paper represents secure watermarking scheme for color images, providing robustness against a set of attacks. Firstly, the image is transformed using an appropriate color transformation. Next each of color channels is transformed through Discrete Wavelet Transform (DWT) and then the Discrete Hadamard Transform (DHT) is applied. By this cascaded(More)
We present a case of subglottic stenosis complicating pregnancy. The patient was born prematurely at 24 weeks gestation and required a twelve-month period of intubation. Airway trauma from prolonged intubation resulted in acquired subglottic stenosis. As an adult the patient had a longstanding audible stridor; however, was not breathless during activity(More)
..................................................................................................... XV CHAPTER 1: OVERVIEW OF WIRELESS LOCAL AREA NETWORK (WLAN) .....................................1 1.1. THE NEED FOR WIRELESS LOCAL AREA NETWORKS...................................................................... 1 1.2. CATEGORIES OF(More)
Stapes surgery has a long history. While the results are good, there is a possibility of complications that can lead to a worsening of hearing. The objective of this study was to study hearing in patients undergoing surgery using 980 Nm Diode laser in the immediate postoperative period. In no case was the bone threshold worse in the first audiometry control(More)
AIM To evaluate the therapeutic effects of switching from one acetylcholinesterase inhibitor (ChEI), donepezil, galantamine or rivastigmine, to another in Alzheimer's disease patients. METHODS We retrospectively enrolled 171 Alzheimer's disease patients, whose ChEI medication was changed. The patients were evaluated on three major aspects of dementia -(More)
libraries become more and more necessary in order to support users with powerful and easy-to-use tools for searching, browsing and retrieving media information. The starting point for these tasks is the segmentation of video content into shots. To segment MPEG video streams into shots, a fully automatic procedure to detect both abrupt and gradual(More)
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