Underwater communication networks are currently being developed for use in underwater control systems, underwater telemetry systems, and underwater image transmission systems. The transmission bandwidth and transmission rates of an underwater communication system are low, and its transmission delay is high. In this paper, we propose a direct mapping orthogonal variable spreading factor (OVSF)-b...

This paper presents an efficient algorithm for post compression optimal rate allocation and packetization within JPEG2000 encoding. JPEG2000, the new ISO/ITU-T standard for still image coding, has been shown to provide superior coding efficiency to the previous standard, JPEG. However, the added efficiency of JPEG2000 comes at the cost of increased computational requirements. To improve the com...

In 1999, when most of the computer industry’s cautionary buzz centered on finding and fixing Y2K flaws, a small group of MITRE engineers began work on the Common Vulnerabilities and Exposures dictionary. Prior to CVE, no standard nomenclature existed for network security holes. In fact, the security landscape was rife with different names for the same vulnerability, as vendors strove to differe...

To transmit and display high quality movies via optical networks, a new Super High Definition (SHD) digital cinema distribution system with the resolution of 8-million pixel is developed. Its image quality is four times of HDTV in resolution, and enables us to replace conventional 35mm films. This system is based on JPEG 2000 coding technology and transmits high quality digital cinema over high...

The CAUSAL, RESTART and RESET mode switches, previously used to enable microscopic parallelism and improve throughput, are examined in terms of the memory requirements of the JPEG2000 block coder. An Extended Pass Switching Arithmetic Encoder (EPSAE) is introduced that aids in the reduction of memory by providing the ability to partially process code-blocks. We show how the use of these switche...

3 INTRODUCTION The security of our nation, the viability of our economy, and the health and well being of our citizens rely today on infrastructures for communication, finance, energy distribution, and transportation. All of these infrastructures depend increasingly on networked information systems. That dependence, with its new levels and kinds of vulnerabilities, is attracting growing attenti...

Objective: Social anxiety disorder (SAD) is defined as a constant fear of being embarrassed or negatively evaluated in social situations or while doing activities in the presence of others. Several studies have examined the role of certain variables that might predict response to treatment and may affect treatment outcome. The purpose of this study was to identify predictive variables of change...

Evaluation of the effectiveness of protected areas networks for conserving diversity is a demanding topic in biological conservation. In the last few years, there has been an increasing number of studies on species distribution modelling which can be easily used to test the efficiency of reserve networks. Unfortunately, this effort has been focused on the so called charismatic species. Our main...

This paper presents a novel system that employs an adaptive neural network for the no-reference assessment of perceived quality of JPEG/JPEG2000 coded images. The adaptive neural network simulates the human visual system as a black box, avoiding its explicit modeling. It uses image features and the corresponding subjective quality score to learn the unknown relationship between an image and its...