Osama Badawy

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Fosamax (Alendronate) is an approved drug widely prescribed for osteoporosis treatment and other bone damaging diseases. Fosamax causes a number of serious side effects at the long-term, therefore it is important to discover the hidden patterns between patients' information and Fosamax adverse events to predict the Adverse Drug Events (ADEs) for new(More)
In this paper, we introduce a Hidden Markov Model (HMM) recognition system for the articulation features of Arabic phones. The low-level features are described by Mel-Frequency Cepstral Coefficients (MFCCs). The created HMMs directly model certain articulation features (fricative and plosive). Classification is done on these features regardless of the phone(More)
E-payment is considered a cornerstone in daily e-transactions. There are many proposed e-payment protocols but the majority of such protocols were designed just to satisfy the traditional flow of payment data which increases the users' risk because of security vulnerabilities and privacy leakage. The Secure Electronic Transaction protocol (SET), a de facto(More)
A multi-valued information system (MIS) is a generalization of the idea of a single valued information system (SIS). In a multi-valued information system, attribute functions are allowed to map elements to sets of attribute values. In this paper, we initiated a new approach for data reduction in Generalized Multi–Valued Decision Information System (GMDIS).(More)
Abstract. Feedback on student performance is a critical part of eLearning environment[1]. Assessment is one of the most important activities in education to evaluate the knowledge level of a student and to highlight the mistakes and misconceptions; espacially, in Multiple Choices (MC) Exam which discovers the weak points of lesson in addition to(More)
In recent years, the noticeable move towards using mobile devices (mobile phones and PDAs) and wireless technologies has made information available in the context of "anytime, anywhere using any mobile device" experience. Delivering information to mobile devices needs some sort of communication means such as Push, Pull, or mixed (Push and Pull) technologies(More)
Rough set theory, which emerged about 20 years ago, is nowadays a rapidly developing branch of artificial intelligence and soft computing. In this paper, we present a new approach (RS_DT) for construction of decision tree based on rough set theory, which will be induced a simplified tree. This tree is transformed into an initial population of genetic(More)
It has recently been shown that Artificial Immune Systems (AIS) can be successfully implemented as biologically inspired systems. The Artificial Immune Network (AIN) is one of the computationally intelligent systems that are inspired by the processes of the immune system. Many algorithms are used to exploit the immune system's characteristics of learning(More)
Mobile payments and mobile banking are growing trends among smart phone users. However, many attempts have failed to push such trends further. One of the main reasons is that most current mobile payment systems encompass a high number of cryptographic operations which consume a high percentage of the mobile handset resources. This paper proposes a light(More)