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Steganography is the science and art of avoiding the arousal of suspicion in covert communications. This paper presents a novel steganography methodology that pursues text summarization in order to hide messages. The proposed summarization-based steganography (Sumstega) methodology takes advantage of recent advances in automatic summarization techniques to generate a text-cover. Sumstega does not...
The particle swarm optimization (PSO) was introduced as a population based stochastic search and optimization process for static environments; however, many real problems are dynamic, meaning that the environment and the characteristics of the global optimum can change over time. Thanks to its stochastic and population based nature, PSO can avoid being trapped in local optima and find the global optimum...
Artificial neural networks have been employed in diverse applications ranging from control, to pattern recognition and classification. While password detection can be implemented with a digital electronic circuit with non-volatile memory, this implementation is prone to hacking. In this paper, we present a 3-layer feedforward neural network which we have designed, trained and tested for secure password...
Adoption of new technology such as Open Source Software (OSS) is an important issue in organizations. Despite many claimed benefits, implementing OSS can be challenging. This paper describes a case study of a City Council in Malaysia that was migrating to Open Source based applications. It presents an integrated framework that allows the researcher to understand the multiple perspectives that influence...
In this paper, we propose time slot based bandwidth management in mobile wireless cellular networks along with time split method. Our analytical results have shown that higher priority handover call gets fixed duration time slot and will be maintained constant through out the connection life time. Lower priority handover call gets minimum duration time slot in heavy load conditions and will enjoy...
As the sizes of (nano) device are aggressively scaled deep towards the nanometer regime, the design and manufacturing of future nano-circuits will become extremely complex and inevitably introduce more defects and their functioning will be adversely affected by transient faults. Therefore, accurately calculating the reliability of future designs will become a very important factor for nano-circuit...
Decomposition of programs into concurrent tasks and scheduling them among computational recourses are two major problems in hardware and software developments of multiprocessor systems. This paper presents a novel homogeneous multiprocessor architecture, in which a hardware core performs these two jobs at run-time using genetic algorithm. This core looks for an efficient decomposition and scheduling...
In this paper swarm intelligence algorithms are presented to deal with dynamical and spatial organization emergence. The goal is to model and simulate the development of spatial center and their dynamic interactions with the environment and the individuals; the swarm algorithms used are inspired from natural termite nest building and ant culturing algorithm. Combination of decentralized approaches...
The Semantic Web initiative holds large promises for the future. There is, however, a considerable gap in semantic Web research between the contributions in the technological field and the research done in the organizational field. This paper examines, from a socio-technical point of view the impact of Semantic Web technology on the strategic, organizational and technological levels. Building on a...
The IBM Cell Broadband Engine (BE) is a multi-core processor with a PowerPC host processor (PPE) and 8 synergic processor engines (SPEs). The Cell BE architecture is designed to improve upon conventional processors in terms of memory latency, bandwidth and power computation. In this paper, we discuss the parallelization, implementation and performance of the edge detection image processing application...
Studying biologically inspired systems had received a great interest in few last years. Artificial neural networks, evolutionary computation, DNA computation, and artificial immune systems are some of the researcher interest which can be highlighted. The human immune system (HIS) is a compound of molecules, cells, and organs which has established to perform several tasks; imperfect detection, distributed...
In recent years, there has been a tremendous growth of online text information related to digital libraries, medical diagnostic systems, remote education, news sources and electronic commerce. There is a great need to search and organize huge amount of information in text documents. This paper focuses on word tendencies in documents and suggests an automatic extraction method for specific subject...
This paper discusses the design and implementation of a PDA-based health monitoring system. The system integrates various technologies to provide individuals with a portable, light weight monitoring unit that can assist patients in leading a healthy and independent life without risks or confinement to medical facilities. The results were encouraging and warrant further exploration of the proposed...
In this paper we have developed a prototype of engineering education using interactive learning based on PDAs and online handwriting recognition. This lecture support system concerns the fourth students and consists of handwritten Arabic letters and digits learning. The student writes one Arabic letter on the surface of digital tablet or on the screen of tablet PC. An evaluation will be done on the...
Using the channel state information (CSI) at transmitter can enhance the performance of the system. From practical point of view, those algorithms that require a limited feedback, from receiver to transmitter, are very attractive. In spatially correlated channels, one method of using such a limited feedback is statistical eigen-beamforming (EBF). In this paper, assuming a limited CSI feedback, we...
The aim of this paper is to compare XML processing abilities of standard software solutions and hardware accelerated scenarios using a new generation of XML processing appliances. The emphasis is put on the performance of processing XML documents and on the demanding ness of various operations over XML data. The definition of tests involves several testing scenarios governed by a testing group CSVOutput...
UML and specialized profiles, such as MARTE, constitute promising specification and modeling tools in the field of system development. Language-based specification and resource modeling shortens the design cycle, and allows the generation of performance simulation models for design-space exploration. Thereby, current solutions in the field of UML based system-development will not allow the feedback...
We propose an approach to stemming Arabic words similar to the approach of Khoja, but with two dictionaries, one of roots and another of radicals. Our approach has the advantage of reducing the words that are inspired by their radicals to their radical and words which are inspired by their roots to their roots with great reliability and consistency and solves the problem of the handicapped radicals...
The growing demand for wireless and mobile services has set the recent research sights on mobility support for next generation IPv6 networks. To provide seamless communications for such networks, Fast Mobile IPv6 (FMIPv6) and Hierarchical Mobile IPv6 (HMIPv6) has been proposed. Moreover, 3GPP has introduced IP multimedia subsystem (IMS) as the next generation IP based infrastructure for multimedia...
The growth in the use of cellular phone has raised the concerns about the possible interaction between the electromagnetic fields (EMF) radiation and the biological effects on human tissues, particularly the brain and the human immune system. These concerns have induced a large volume of research studies. However, most of the previous review studies are concentrated on negative effects and no published...
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