ppxscal/embedding_network huggingface dataset:
Dual-Phase-Lag Model of Skin Bioheat Transfer
Authors: Feng Xu, Tianjian Lu, Keith A. Seffen
Venue: Proceedings of the 2008 International Conference on BioMedical Engineering and Informatics - Volume 01 (2008)

Due to the “lengthy” thermal relaxation time in biological tissue, non-Fourier thermal behavior has been experimentally observed, attracting increasingly more attention to this phenomenon. The aim of this study is to develop a computational approach to examine the non-Fourier heat transfer process in skin tissue. The Dual-Phase-Lag (DPL) model is employed to study bioheat transfer in skin tissue for the first time, for it has the ability to characterize microstructural interactions in heat transport. Large discrepancies are found to exist amongst the predictions of Pennes model and Dual-Phase-Lag model of bioheat transfer.
Microelectrode Signals Segmentation Using Stationary Wavelet Transform
Authors: Cristian Guarnizo, Alvaro Orozco, German Castellanos
Venue: Proceedings of the 2008 International Conference on BioMedical Engineering and Informatics - Volume 02 (2008)

We present a methodology for the automatic segmentation of extracellular microelectrode recordings (MER) based on stationary wavelet transform and modified F test which identify segments with equal time - frequency behavior. The method was tested using synthetic signals and then applied to real MER signals, achieving artifact removal and showing a superior performance than segmentation based on time representation.
Measuring Stipple Aesthetics in Hand-Drawn and Computer-Generated Images
Authors: Ross Maciejewski, Tobias Isenberg, William M. Andrews, David S. Ebert, Mario Costa Sousa, Wei Chen
Venue: IEEE Computer Graphics and Applications (2008)

When people compare a computer-generated illustration to a hand-drawn illustration of the same object, they usually perceive differences. This seems to indicate that the two kinds of images follow different aesthetic principles. To explore and explain these differences, the authors compare texture stippling in hand-drawn and computer-generated illustrations, using image-processing analysis techniques.
Contextualising design: Aspects of using usability context analysis and hierarchical task analysis for software design
Authors: S. Mills
Venue: Behaviour & Information Technology (2007)

Usability Context Analysis is part of ISO 9241-11 and, as such, is recommended for use in user-centred design. However, studies involving a critical assessment of usability context analysis within the software domain are scarce; this paper details two small studies that involved the use of usability context analysis (UCA) and hierarchical task analysis (HTA). The first system involved designing a small subsite of a larger website, while the second system was a small database designed as part of an exercise by UK university students. Post-design evaluation suggested that the use of both UCA and HTA, rather than one or the other, was beneficial in gathering and analysing user requirements.
Learning from incomplete data with infinite imputations
Authors: Uwe Dick, Peter Haider, Tobias Scheffer
Venue: Proceedings of the 25th international conference on Machine learning (2008)

We address the problem of learning decision functions from training data in which some attribute values are unobserved. This problem can arise, for instance, when training data is aggregated from multiple sources, and some sources record only a subset of attributes. We derive a generic joint optimization problem in which the distribution governing the missing values is a free parameter. We show that the optimal solution concentrates the density mass on finitely many imputations, and provide a corresponding algorithm for learning from incomplete data. We report on empirical results on benchmark data, and on the email spam application that motivates our work.
Histogram-based undetectable fidelity image in steganography as MSB controller
Authors: Hung-Min Sun, Chi-Yao Weng, Shiuh-Jeng Wang
Venue: Proceedings of the 2nd international conference on Ubiquitous information management and communication (2008)

The LSB substitution and LSB matching method are to embed the secret data into the least-significant-bits of the pixel values in a cover image. However, the flexible operations were not offered in the past studies. In order to enhance the operations, we propose a scheme to make the secret embedding more flexible. Our scheme is upon the observation of MSB controller to embed one bit secret data in a pixel. As the experimental results, it turns out that our method gains the same high quality when compared to the secret embedding methods, such as LSB and LSB matching manners. Besides, the histogram detection for the secret data embedding is efficiently deterred in our proposed scheme.
Experiences and investigations with Heraklion MESH: an experimental metropolitan multi-radio mesh network
Authors: Manolis Delakis, Kostas Mathioudakis, Nikolaos Petroulakis, Vasilios A. Siris
Venue: Proceedings of the 4th International Conference on Testbeds and research infrastructures for the development of networks & communities (2008)

We present our experiences and investigations with an experimental metropolitan multi-radio mesh network that covers an area of approximately 60 Km2 in the city of Heraklion, Crete. The network consists of 14 nodes, among which six are core nodes with up to four 802.11a wireless interfaces each, and an additional wireless interface for management and monitoring. The distance between core mesh nodes varies from 1.6 to 5 Km, and the wireless mesh network contains two gateways that connect it to a fixed network. Our investigations have considered the online monitoring of the links between core nodes, the interference between the wireless interfaces located in the same mesh node, channel assignment procedures, and the use of the metropolitan mesh network for real-time collection of electromagnetic field (EMF) measurements.
Multi-projector display with continuous self-calibration
Authors: Jin Zhou, Liang Wang, Amir Akbarzadeh, Ruigang Yang
Venue: Proceedings of the 5th ACM/IEEE International Workshop on Projector camera systems (2008)

Most existing calibration techniques for multi-projector display system require that the display configuration remain fixed during the display process. We in this paper present a new approach to continuously re-calibrate the projection system to automatically adapt to the display configuration changes, while the multi-projector system is being used without interruption. By rigidly attaching a camera to each projector, we argument the projector with sensing capability and use the camera to provide online close-loop control. In contrast to previous auto or continuous projector calibration solutions, our approach can be used on surfaces of arbitrary geometry and can handle both projector and display surface movement, yielding more flexible system configuration and better scalability. Experimental results show that our approach is both accurate and robust.
Data-stream-based global event monitoring using pairwise interactions
Authors: Punit Chandra, Ajay D. Kshemkalyani
Venue: Journal of Parallel and Distributed Computing (2008)

The problem of global state observation is fundamental to distributed systems and to the analysis of data streams. Many interactions in distributed systems can be analyzed in terms of the building block formed by the pairwise interactions of intervals at two processes. Considering causality-based pairwise interactions by which two processes may interact with each other, there are 40 orthogonal interaction types. For each pair of processes (P"i,P"j), let interaction type r"i","j be of interest. This paper examines the problem: ''If a global state of interest to an application is specified in terms of such pairwise interaction types, one per pair of processes, how can such a global state be detected?'' A solution identifies a global state in which the interaction type specified for each process pair is satisfied. This paper formulates the specific conditions on the communication structures to determine which of the intervals being examined at any time may never satisfy the stipulated interaction type for that pair of processes, and therefore that interval(s) need no longer be considered as forming a part of any solution. Based on this theory, the paper proposes two on-line distributed algorithms to solve the problem.
A population model of diabetes and pre-diabetes
Authors: A. Boutayeb, A. Chetouani
Venue: International Journal of Computer Mathematics (2007)

The incidence and prevalence of diabetes are increasing all over the world. Complications of diabetes constitute a burden for individuals and the whole of society. In the present paper, ordinary differential equations and numerical approximations are used to monitor the size of populations of pre-diabetes, and diabetes with and without complications. Different scenarios are discussed according to a set of parameters, and the dynamical evolution of the population from the stage of diabetes to the stage of diabetes with complications is illustrated. The model shows how efficient and cost-effective strategies can be obtained by acting on the incidence of pre-diabetes and/or controlling the evolution to the stages of diabetes without and with complications.
A rule-based approach to security test automation on network layer
Authors: Hyeokchan Kwon, Jaehoon Nah, Kyoil Chung
Venue: Proceedings of the 4th WSEAS International Conference on Telecommunications and Informatics (2005)

Recently, Many projects have been implementing IPsec(IP Security) on the various Operating Systems for security of IPv6 network. But there is no existing tool that checks the IPsec-based systems, which provide IPsec services, work properly and provide their network security services well in the IPv6 network. In this paper, we propose a rule-based approach to security test automation on IPv6 network. So, we design STRDL(Security Test Rule Description Language) to define security test rule and rule execution engine for executing the rules defined by STRDL for testing security of the IPv6 network, and we provide implementation details. The system is divided into following part: User Interface part, Rule Execution Module Part, DBMS part and Agent that gathering information needed for security test.
The non-autonomy of the virtual: philosophical reflections on contemporary virtuality
Authors: Jeff Malpas
Venue: Ubiquity (2008)

Much contemporary talk of virtual 'worlds' proceeds as if the virtual could somehow be considered as in competition with or as an alternative to the world of the 'nonvirtual' or the 'everyday'. This paper argues that such a contrast is fundamentally mistaken, and that the virtual is not autonomous with respect to the everyday, but is rather embedded within it, and an extension of it.
An Optimization Approach to Restart Tree Based on Mean Failure Frequencies
Authors: Ye Haizhi, Wang Huiqiang, Liang Ying
Venue: Proceedings of the First International Workshop on Knowledge Discovery and Data Mining (2008)

Restart tree is the groundwork for microreboot and recursive recovery, while optimization of restart tree is a key problem in increasing efficiency of recursive recovery. Based on the research of related works, the optimization principle of restart tree is analyzed and a novel approach is proposed for optimizing restart tree. In this approach, mean failure frequencies of components are obtained by injecting exceptions during load testing, which could be used to compute and analyze the failure correlation degrees between components. The components with high failure correlation degrees are constructed as a restart group to realize the optimization of restart tree. The results of the case study show that this approach reduces the mean time to recovery of componentized distributed application and implements the optimization of restart tree.
Analysis of wound rotor self-excited induction generators
Authors: K. S. Sandhu, S. P. Jain
Venue: Proceedings of the 2nd WSEAS International Conference on Circuits, Systems, Signal and Telecommunications (2008)

Self-excited induction generators are found to be to be most suitable machines for wind energy conversion in remote and windy areas due to several advantages over grid connected machines. Such machine exhibits poor performance in terms of voltage and frequency under frequent variations of operating speeds, which is a common feature in wind energy conversion. In this paper an attempt has been made to propose a simple model for the control of wound rotor self-excited induction generator. Simulated results as obtained have been compared with experimental results on a test machine and found to be in close agreement.
KPCA denoising and the pre-image problem revisited
Authors: A. R. Teixeira, A. M. Tomé, K. Stadlthanner, E. W. Lang
Venue: Digital Signal Processing (2008)

Kernel principal component analysis (KPCA) is widely used in classification, feature extraction and denoising applications. In the latter it is unavoidable to deal with the pre-image problem which constitutes the most complex step in the whole processing chain. One of the methods to tackle this problem is an iterative solution based on a fixed-point algorithm. An alternative strategy considers an algebraic approach that relies on the solution of an under-determined system of equations. In this work we present a method that uses this algebraic approach to estimate a good starting point to the fixed-point iteration. We will demonstrate that this hybrid solution for the pre-image shows better performance than the other two methods. Further we extend the applicability of KPCA to one-dimensional signals which occur in many signal processing applications. We show that artefact removal from such data can be treated on the same footing as denoising. We finally apply the algorithm to denoise the famous USPS data set and to extract EOG interferences from single channel EEG recordings.
Prosodic alignment in human-computer interaction
Authors: N. Suzuki, Y. Katagiri
Venue: Connection Science (2007)

Androids that replicate humans in form also need to replicate them in behaviour to achieve a high level of believability or lifelikeness. We explore the minimal social cues that can induce in people the human tendency for social acceptance, or ethopoeia, toward artifacts, including androids. It has been observed that people exhibit a strong tendency to adjust to each other, through a number of speech and language features in human-human conversational interactions, to obtain communication efficiency and emotional engagement. We investigate in this paper the phenomena related to prosodic alignment in human-computer interactions, with particular focus on human-computer alignment of speech characteristics. We found that people exhibit unidirectional and spontaneous short-term alignment of loudness and response latency in their speech in response to computer-generated speech. We believe this phenomenon of prosodic alignment provides one of the key components for building social acceptance of androids.
Design of an assistant infant monitoring system using fish robots
Authors: Seung Y. Na, Daejung Shin, Jin Y. Kim, Min S. Park, Seong-Joon Baek, Sowket M. Ali, Aaron Park
Venue: Proceedings of the 5th WSEAS International Conference on Computational Intelligence, Man-Machine Systems and Cybernetics (2006)

Design of an assistant infant monitoring system requires intelligent man-machine interaction as well as ubiquitous convergence technologies since infants should be continuously monitored regardless ofthe location of their guardians. Moreover, the image and audio information about infants should be accessed by anyone who is interested in the states of infants. Fish robots are used for the camera platform to provide sufficient degrees of freedom of camera focusing and interesting features to the infants while preventing infants from touching the camera. To conform to the restriction of the ubiquitous environment, the amount of visual information is sufficiently reduced as far as the infants' state can be recognized. The proposed method provides effective infant monitoring results in ubiquitous environment by cellular phones, PDAs or IP devices.
Developing silicon intellectual property E-trade mechanisms for system on chip design and integration
Authors: C. V. Trappey, A. J. C. Trappey, F. T. L. Lin
Venue: International Journal of Computer Integrated Manufacturing (2007)

The integration of IC design and manufacturing (IDM) is a major trend in the modern management paradigm of the semiconductor supply chain. In order to shorten the time-to-market for complex system-on-chips (SoC), the trade and reuse of silicon intellectual properties (SIPs) for fast IC design becomes a critical success factor for semiconductor IDM. In this research, intelligent mobile agents and fuzzy evaluation models are built into a knowledge services and trade platform (KSTP). The mobile agent behaviour model is used for knowledge acquisition and negotiations between sites of SIP providers, buyers and intermediators. The agent-based KSTP considers time, cost and precision of acquiring SIP information needed for SoC design and fabrication. For trade partner matching, fuzzy evaluation models are developed to consistently suggest suitable partners for trades under different circumstances. The ultimate goal of the research is to enable autonomous, dynamic and collaborative SIP exchanges and trades in the global value chain of semiconductor industry.
New Bidirectional Motion Estimation Using Mesh-Based Frame Interpolation for Videoconferencing Applications
Authors: V. Muñoz-Jiménez, A. Zergaïnoh-Mokraoui, J.-P. Astruc
Venue: Proceedings of the Data Compression Conference (2008)

This paper focuses on the bidirectional motion estimation problem for videoconferencing applications at very low bit rate. The missed frames are predicted by the decoder using only the transmitted frames with no additional information. The proposed approach is based on spatio-temporal interpolation. On each of the two selected reference frames, the same chosen moving objects are meshed using deformable block quad-tree decomposition. The positions of the mesh nodes are related to the content of the objects in such a way that the quadratic spatial reconstruction error of the objects is as small as possible. From these nodes, a temporal cubic spline interpolation predicts the mesh nodes of the moving object in the missed frame reconstructing then the meshed object. The proposed approach is integrated in the H.264/AVC video coding standard. Simulation results present the performances of the proposed bidirectional motion estimation, at very low bit rate.
Dynamic Bitmap Graphics with PHP and gd, Second Edition, 2 edition
Authors: Jacek Artymiak
Venue:  (2007)

A picture is worth a thousand words, especially when it is used to illustrate business, financial, or scientific data. It is worth even more if you can generate it on demand and serve the latest information in the visual format. If your job requires writing PHP applications that generate bitmap images on the fly, then this book will teach you how to do it using PHP and the excellent gd library from Thomas Boutell.
CrossTree: A new HTC architecture with high reliability and scalability
Authors: Xiao-guang Liu, Meng Yu, Gang Wang, Jing Liu
Venue: Proceedings of the 13th International Conference on Parallel and Distributed Systems - Volume 02 (2007)

HTC (High Throughput Computing) is a environment that can provide large amounts of processing capacity over long periods of time. To HTC, users are more concerned about how many jobs can be completed in a long period, but not how fast can a single job be finished. Condor, an implementation of HTC, is constructed by commodity CPUs and memory. As long as the Condor nodes are controlled by the Central Management Node, its reliability and scalability had been restricted. Based on the concept of DHT (Distributed Hash Table), this paper presents a new distributed HTC architecture, named CrossTree, which has no central parts, and its metadata is distributed across all nodes in the system. Theoretical analysis and the simulation results proved CrossTree to be an efficient architecture with high scalability and reliability.
The use of GIS in reconstructing the Holocene palaeogeography of the Rhine-Meuse delta, The Netherlands
Authors: H. J. A. Berendsen, K. M. Cohen, E. Stouthamer
Venue: International Journal of Geographical Information Science (2007)

In Holocene palaeogeographical studies, GIS nowadays is used in various ways, embracing either GIS modelling possibilities or GIS spatial data storage functionality. This paper is an example of the latter type of GIS use for reconstruction of the Holocene Rhine-Meuse delta (128×75 km; part of the Dutch coastal plain). Depositional traces of river courses (channel belts) are major features to map. We digitized mapped channel belt fragments and stored their reconstructed ages in a linked table. The GIS data structure allows checking for internal consistency of the implemented reconstruction, enabling iterative improvement while digitizing and labelling. Palaeogeographical maps for any given time during the Holocene result from GIS-database queries. Coupled to the GIS are high-resolution digital elevation data (sub-decimetre accurate laser-altimetry data covering the entire study area) and a database of ca 100 000 borehole descriptions, allowing for further mapping improvements. The GIS structure and digital data together greatly improved mapping and enable larger areas to be mapped in greater detail with greater accuracy and in less time.
The Process Data Driven Workflow Modeling Approach and its' Implementation on Medical Infection Control Process
Authors: Huang Zhengxing, Lu Xudong, Duan Huilong, Yin Dengfeng
Venue: Proceedings of the 2008 International Conference on BioMedical Engineering and Informatics - Volume 02 (2008)

Workflow technology is gaining attention in healthcare domain because it supports and assures fluent execution of complex healthcare business process. In order to implement workflow technology in healthcare environment, data-flow perspective issues should be considered. This paper analyzes basic characters of healthcare data from the point of workflow view, then presents an approach of process data driven workflow modeling method: the transformation of data fires events, which drive the transfer among tasks that have executable sequence in the workflow process. XML based workflow model description language is proposed as well, which can be mapped into executable software system framework conveniently and improve component’s capability of reusing and systemic agility. Furthermore, an actual healthcare process modeling example, medical infection control process model, is presented, which illustrate our approach is feasible.
A simple distributed coding algorithm for sensor networks
Authors: Riccardo Bernardini, Roberto Rinaldo
Venue: Proceedings of the 2nd international conference on Mobile multimedia communications (2006)

In this paper we propose a general distributed coding technique for an N-source scenario with low computational requirements at the coder side. The key hypothesis is that it must be possible to find an approximate estimate of each source from the knowledge of a "reference soruce" and that the estimation error can be statistically described.