1,721,189 research outputs found
Multilayers DNA-QR Based Steganography
No full textBiological systems have been a rich source of stimulation for computer security specialists. A wide number of approaches have been proposed over the last decade for encoding data using deoxyribonucleic acid (DNA), giving rise to the developing area of DNA data hiding. In this work, a new data hiding technique based upon DNA characteristic have been developed. DNA matrix has been used to represent the secret message. After that DNA matrix converted to QR (Quick Response) representation that offers a broad scope of practical usage. In addition, we embed the QR codes into the cover image by applying the Haar Wavelet technique on the resulting DNA signals and LSB. Experimental results have presented a high PSNR which indicate a high level of quality in stego image with high capacity
A Biomimetic Sanet Middleware Infrastructure for Guiding and Maneuvering Autonomous Land-Yacht Vessels
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An Anticipatory SANET Environment for Training and Simulation of Laparoscopic Surgical Procedures
No full textSurgical simulation environments are required to train laparoscopic surgeons to become familiar with the technology, before they operate on patients. The chapter examines how a Sensor-Actor Network (Sanet) incorporated into the laparoscopic training facility can be augmented with the Belief-Desire-Intention (Bdi) agents for autonomous operation of the sensor facility along with the training environment. In addition to neural network processes, path trajectory estimation can be superimposed as a visual aid in a variety of training scenarios. The algorithms used in this experiment provides a balanced approach to monitor the training surgeons level of progress and feedback as they perform the simulated training procedures
Data and Knowledge-Transfer Model for the Development of Software Requirements Analysis CASE Tools designed for Cross-Time-Zone Projects
No full textThis chapter describes work undertaken to evaluate an approach for developing collaborative requirements-analysis CASE tools that are specifically designed to address the needs of cross-time-zone development teams, that is, teams spread across different geographical locations around the world. Few of the software requirements analysis computer assisted software environment (CASE) tools readily available are designed specifically for cross-time-zone development activities. We propose a specifically tailored data and knowledge-transfer model, and investigate its suitability for the development of a cross-time-zone oriented CASE tool. The approach was used to develop a working prototype. The approach and prototype will be further evaluated in a collaborative undertaking involving the Wrocſaw University of Technology, the University of Technology, Sydney and the University of Arizona (UA)
Hardware Evaluation of Near Field Magnetic Induction Communication systems
No full textThis paper examines the performance of magnetic induction communication systems for body area networks. First a theoretical study, examination and investigation of the properties and capabilities of near field magnetic induction communications as an emerging form of short range telecommunications access is given. From both a theoretical and hardware tests, results are correlated showing strong agreement between theory and hardware implementation. It is shown that power decay follows an inverse law of distance to power 6 and that certain structures in the communication terrain can affect the magnetic flux created by the transmitter from reaching the receiver thus limiting the range of communications. A body area network of the devices is shown in which a centralised hub aggregates data from the nodes before accessing a wide area network of choic
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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