ppxscal/embedding_network huggingface dataset:
Unsupervised learning based feature points detection in ECG
Authors: Sajjad Mohsin
Venue: Proceedings of the 8th conference on Signal, Speech and image processing (2008)

ECG will change its shape according to the patient condition, and the ECG of different patients are also differ from each other. Therefore it is the requirement that we must choose and proposed system that can cater these abilities to adopt themselves accordingly to make the system robust. To manage altering shape of ECG a self-organized, unsupervised learning based, robust Neural Network is needed. This study proposes a new method of Feature Points (FP's) detection in ECG using hybrid of DP-Matching and ART2 neural networks in Multichannel-ART (MART) neural networks. To manage the altering shape of ECG's a self-organized and robust Neural Network is needed. In this study we use two channels Multichannel ART (MART). Channel one uses the robust technique of ART2 for the detection of FP's of QRS wave (Q and S points) using template-matching method of triangle patterns. The second Channel uses rectangle output from DP-Matching technique for the exact location of FP's. The method updates the channel one templates through learning. The method is evaluated using MIT/BIH arrhythmia database. The standard deviations (SD's) between detected FP's and FP's identified by the referee are well within the limit of the SD's recommended by the CSE committee.
Beginner's Guide To Knoppix: An Introduction To Linux That Runs From CD
Authors: Phil Jones
Venue:  (2008)

Knoppix is an astoundingly clever product. It runs Linux completely from CD. There is no need to install. It bypasses all the software already installed on your PC or laptop. It automatically detects the hardware in your computer, such as video card, sound card, networking, the lot (subject to suitable hardware). When you've finished using Knoppix, simply restart. Your computer will return to your regular system, and it will behave as if nothing has happened. Knoppix is Free Software and open source under the terms of the GNU General Public Licence (GPL).
The Fractal Compression Coding in Mobile Video Monitoring System
Authors: Yinjing Guo, Xianqing Chen, Min Deng, Zhengjie Wang, Wenhong Lv, Chunyang Xu, Ting Wang
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 03 (2009)

The fractal theory is widely used in the multi-server mobile video monitoring system which is based on streaming media communication technology and it's self-adaptive combination arithmetic. The fractal compression coding method is different from the traditional image compression coding method. Firstly, it makes the least size division. Secondly, it combines these sub-blocks together according to the combination error. Emulation experiments show that this method can not only shorten the time of the compression but also heighten the compression speed.
TVA: a DoS-limiting network architecture
Authors: Xiaowei Yang, David Wetherall, Thomas Anderson
Venue: IEEE/ACM Transactions on Networking (TON) (2008)

We motivate the capability approach to network denial-of-service (DoS) attacks, and evaluate the Traffic Validation Architecture (TVA) architecture which builds on capabilities. With our approach, rather than send packets to any destination at any time, senders must first obtain "permission to send" from the receiver, which provides the permission in the form of capabilities to those senders whose traffic it agrees to accept. The senders then include these capabilities in packets. This enables verification points distributed around the network to check that traffic has been authorized by the receiver and the path in between, and hence to cleanly discard unauthorized traffic. To evaluate this approach, and to understand the detailed operation of capabilities, we developed a network architecture called TVA. TVA addresses a wide range of possible attacks against communication between pairs of hosts, including spoofed packet floods, network and host bottlenecks, and router state exhaustion. We use simulations to show the effectiveness of TVA at limiting DoS floods, and an implementation on Click router to evaluate the computational costs of TVA. We also discuss how to incrementally deploy TVA into practice.
Reflections of everyday activities in spending data
Authors: Julia Schwarz, Jennifer Mankoff, H. Scott Matthews
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

In this paper we show that financial information can be used to sense many aspects of human activity. This simple technique gives people information about their daily lives, is easily accessible to many at no extra cost, requires little setup, and does not require the manufacture of any external devices. We will focus on how financial data can be used to show users where they spend their time, when they accomplish certain habits, and what the impact of their activities is on the environment. We validate our idea by implementing three demonstration applications intended for personal use. Finally, this paper discusses limitations of sensing using financial data and possible solutions.
The people-prototype problem: understanding the interaction between prototype format and user group
Authors: Katherine M. Sellen, Micheal A. Massimi, Danielle M. Lottridge, Khai N. Truong, Sean A. Bittle
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

When gathering feedback about an envisioned system, prototypes communicate design ideas to user groups. However, it is unclear how user responses are affected by prototype format. We conducted a 2x2 quasi-experiment (video /storyboard format x older and younger user groups) to test for an interaction between prototype format and user group. We found a significant interaction between prototype format and responses across user groups. Our results indicate that differences in user responses can be misinterpreted as the result of user group characteristics. We advise using multiple prototype formats to counteract a 'media effect'. Alternatively, we advise using storyboards for a smaller 'media effect'.
Package-Segment Model for Movie Retrieval System and Adaptable Applications
Authors: Takayuki Kunieda, Yuki Wakita
Venue: Proceedings of the 1999 IEEE International Conference on Multimedia Computing and Systems - Volume 02 (1999)

This paper is to verify the Package-Segment Model which we are proposing as a representation method for multimedia content logical structure. We describe the effectiveness of the content logical structure. The Package-Segment Model is constructed of various objects, which are defined as structure components and involved in the construction processes. We developed an experimental retrieval system of the contents which are indexed by this Package-Segment Model. We confirmed that the Package-Segment Model has representation flexibility and its object framework and retrieval mechanism is very adaptable therefore it can be integrated into various multimedia contents management system. A prototype automatic indexing and retrieval application is also presented and evaluated.
The JAMF Attention Modelling Framework
Authors: Johannes Steger, Niklas Wilming, Felix Wolfsteller, Nicolas Höning, Peter König
Venue: Attention in Cognitive Systems: 5th International Workshop on Attention in Cognitive Systems, WAPCV 2008 Fira, Santorini, Greece, May 12, 2008 Revised Selected Papers (2009)

Many models of attention have been implemented in recent years, but comparison and further development are difficult due to the lack of a common platform. We present JAMF, an open source simulation framework for drag drop design and high-performance execution of attention models. Its building blocks are "Components", functional units encapsulating specific algorithms. Simulations are created in the graphical JAMF client by connecting Components from the server's repository. Today it contains Components suitable for replication and extension of many major models of attention. Simulations are executed on the JAMF server by translation of model definitions into binary applications, while automatically exploiting the model's structure for parallel execution. By disentangling design and algorithmic implementation, the JAMF architecture combines a novel tool for rapid test and implementation of attention models with a high-performance execution engine.
Key technology trends - Satellite systems
Authors: Charles W. Bostian, William T. Brandon, Alfred U. Mac Rae, Christoph E. Mahle, Stephen A. Townes
Venue: Space Communications (2000)

This paper is based on material extracted from the WTEC Panel Report Global Satellite Communications Technology and Systems, December 1998. It presents an overview of key technology trends in communications satellites in the last few years. After the introduction which deals with such issues as the transformation of the one-at-a-time approach for building satellites to a production-oriented one, there follows a discussion of critical technologies for large geosynchronous earth orbit (GEO) satellites with power systems growing to 20 kW and more. Satellite antenna technology, one of the most critical areas in measuring progress, is next reviewed, including large reflector antennas, phased arrays and optical beam formers. This is followed by a discussion of onboard processing (analog and digital), progress in satellite traveling wave tubes, solid state power amplifiers and optical satellite technologies including intersatellite links (ISLs). Last some pertinent satellite bus issues (electric propulsion, thermal control and attitude control) are reviewed. Small and mini-satellites are discussed, but not treated in great detail as much of their technology is derived from that of GEO satellites.
Interval Expressions - a Functional Model for Interactive Dynamic Multimedia Presentations
Venue: Proceedings of the 1996 International Conference on Multimedia Computing and Systems (1996)

We propose a new model for structured temporal composition of interactive dynamic multimedia presentations. It extends the notion of basic media segments to include executable code, live feeds, and links. The model is based on Interval Expressions that involve media segments of unknown duration. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Molecular Communication through Gap Junction Channels
Authors: Tadashi Nakano, Tatsuya Suda, Takako Koujin, Tokuko Haraguchi, Yasushi Hiraoka
Venue: Transactions on Computational Systems Biology X (2008)

Molecular communication is engineered biological communication that allows biological devices to communicate through chemical signals. Since biological devices are made of biological materials and are not amenable to traditional communication means (e.g., electromagnetic waves), molecular communication provides a mechanism for biological devices to communicate by transmitting, propagating, and receiving molecules that represent information. In this paper, we explore biological cells and their communication mechanisms for designing and engineering synthetic molecular communication systems. The paper first discusses the characteristics and potential design of communication mechanisms, and then reports our experimental and modeling studies to address physical layer issues of molecular communication.
Design and Evaluation of Intelligent Menu Interface through Cognitive Walkthrough Procedure and Automated Logging for Management Information System
Authors: Xiangyu Wang
Venue: Computer Supported Cooperative Work in Design IV: 11th International Conference, CSCWD 2007, Melbourne, Australia, April 26-28, 2007. Revised Selected Papers (2008)

One of the critcal issues in Managment Information System (MIS) is the information overload from complicated hierachical menu. Novice users easily get lost when an important and frequently used menu item is rooted and hidden in a deeper level of a poorly designed menu interface. Therefore, usability of menu interface critically affects the quality of MIS applications. This paper developed an approach by integrating Cognitive Walkthrough procedure and automated logging to automatically generate intelligent and dynamic menu to accomodate different needs in different tasks for different types of users. Through this approach, the contents and structures of the menu are adaptive to the usage context. A pilot study was also conducted to evaluate the overall usability issues and effectiveness of the intelligent menu. It was revealed in the preliminary results that the intelligent menu interface could sigificantly reduce the time for menu search per task which is otherwise required in searching a normal non-intelligent menu interface. The total time for accomplishing a set of sequential and pre-defined routine tasks was also reduced by a significant amount.
Accomodating Diversity in CMPs with Heterogeneous Frequencies
Authors: Major Bhadauria, Vince Weaver, Sally A. Mckee
Venue: Proceedings of the 4th International Conference on High Performance Embedded Architectures and Compilers (2008)

Shrinking process technologies and growing chip sizes have profound effects on process variation. This leads to Chip Multiprocessors (CMPs) where not all cores operate at maximum frequency. Instead of simply disabling the slower cores or using guard banding (running all at the frequency of the slowest logic block), we investigate keeping them active, and examine performance and power efficiency of using frequency-heterogeneous CMPs on multithreaded workloads. With uniform workload partitioning, one might intuitively expect slower cores to degrade performance. However, with non-uniform workload partitioning, we find that using both low and high frequency cores improves performance and reduces energy consumption over just running faster cores. Thread scheduling and workload partitioning naturally play significant roles in these improvements. We find that using under-performing cores improves performance by 16% on average and saves CPU energy by up to 16% across the NAS and SPEC-OMP benchmarks on a quad-core AMD platform. Workload balancing via dynamic partitioning yields results within 5% of the overall ideal value. Finally, we show feasible methods to determine at run time whether using a heterogeneous configuration is beneficial. We validate our work through evaluation on a real CMP.
A second course on testing
Authors: Scott Davidson
Venue: IEEE Design Test (2009)

This is a review of System on Chip Test Architectures: Nanometer Design for Testability (edited by Laung-Terng Wang, Charles E. Stroud, and Nur A. Touba). Overall, this is a good guide to the frontiers of test. For most of the chapters, the selection of subjects and the detail level is just right, largely because this book is a follow-on to a more introductory book, VLSI Test Principles and Architectures. If one of the more basic books on testing is not adequate for your requirements, this text would make a nice addition to your library. It would also do well as a text in an advanced graduate course.
Detecting and Tracking People in a Homogeneous Environment Using Skin Color Model
Authors: B. Yogameena, S. Md Mansoor Roomi, S. Raju Abhaikumar
Venue: Proceedings of the 2009 Seventh International Conference on Advances in Pattern Recognition (2009)

The task of correctly identifying and tracking people in a shadow environment for understanding the group dynamics is of paramount importance in many vision systems. This work presents a real time system for detecting and tracking people, in an environment where, people have similar attire. The proposed frame work contains shadow removal in HSV color space, detection through occlusion, person identification by developing skin color model and tracking by extracting image features. Experimental results illustrate that the proposed approach works robustly in homogeneous environment.
Guaranteeing QoE in Audio-Video Transmission by IEEE 802.11e HCCA
Authors: Zul Azri Bin Muhamad Noh, Takahiro Suzuki, Shuji Tasaka
Venue: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (2008)

This paper studies packet scheduling schemes with QoE (user-level QoS) guarantee for audio-video transmission in a wireless LAN with HCF controlled channel access (HCCA) of the IEEE 802.11e MAC protocol. We first propose the static scheduling (SS) scheme, which grants adjustable transmission opportunity (TXOP) duration for constant bit rate (CBR) traffic. The SS scheme can determine the minimum TXOP duration capable of guaranteeing high QoE; it can maximize the number of admitted flows. As the burstiness of variable bit rate (VBR) traffic cannot be absorbed by the SS scheme, we also propose the multimedia priority dynamic scheduling (MPDS) scheme, which can absorb the burstiness through allocating additional TXOP duration. We then compare the SS scheme, the MPDS scheme, and the reference scheduler (TGe scheme) in terms of application-level QoS and user-level QoS (QoE). Numerical results show that in the SS scheme, the QoE can be kept relatively higher even when the TXOP duration is reduced in the case of video with the I picture pattern; this implies that more flows can be admitted. In the case of video with the IPPPPP picture pattern, which has the VBR characteristic more remarkably, reducing the TXOP duration according to the SS scheme will deteriorate the QoS level. In this case, the MPDS scheme performs better when the number of multimedia stations is small. However, the performance of the MPDS scheme deteriorates with the increase of the number of multimedia stations, though the results are comparable to or even better than those of the SS and TGe schemes.
Variational Multiscale LES and Hybrid RANS/LES Parallel Simulation of Complex Unsteady Flows
Authors: Hilde Ouvrard, Bruno Koobus, Maria-Vittoria Salvetti, Simone Camarri, Alain Dervieux
Venue: High Performance Computing for Computational Science - VECPAR 2008: 8th International Conference, Toulouse, France, June 24-27, 2008. Revised Selected Papers (2008)

We study a new hybrid RANS/Variational Multiscale LES (VMS-LES) model for bluff body flows. The simulations have been carried out using a parallelized solver, based on a mixed element/volume formulation on unstructured grids. First, the behavior of a VMS-LES model with different subgrid scale models is investigated for the flow past a circular cylinder at Reynolds number Re =3900. Second, a new strategy for blending RANS and LES methods in a hybrid model is described and applied to the simulation of the flow around a circular cylinder at Re = 140000.
A Compendium of Partial Differential Equation Models: Method of Lines Analysis with Matlab, 1 edition
Authors: William E. Schiesser, Graham W. Griffiths
Venue:  (2009)

A Compendium of Partial Differential Equation Models presents numerical methods and associated computer codes in Matlab for the solution of a spectrum of models expressed as partial differential equations (PDEs), one of the mostly widely used forms of mathematics in science and engineering. The authors focus on the method of lines (MOL), a well-established numerical procedure for all major classes of PDEs in which the boundary value partial derivatives are approximated algebraically by finite differences. This reduces the PDEs to ordinary differential equations (ODEs) and thus makes the computer code easy to understand, implement, and modify. Also, the ODEs (via MOL) can be combined with any other ODEs that are part of the model (so that MOL naturally accommodates ODE/PDE models). This book uniquely includes a detailed line-by-line discussion of computer code as related to the associated equations of the PDE model.
Transactive memory systems: a perspective on coordination in human-robot incident response teams
Authors: Lei Liu, Pamela J. Hinds
Venue: Proceedings of the 4th ACM/IEEE international conference on Human robot interaction (2009)

This paper introduces Transactive Memory System (TMS) theory to the study of human-robot interaction in a complex work setting comprised of people with complementary domains of expertise. New insights regarding the development of TMS in human-robot incident response teams are presented.
Flexible query answering on graph-modeled data
Authors: Federica Mandreoli, Riccardo Martoglia, Giorgio Villani, Wilma Penzo
Venue: Proceedings of the 12th International Conference on Extending Database Technology: Advances in Database Technology (2009)

The largeness and the heterogeneity of most graph-modeled datasets in several database application areas make the query process a real challenge because of the lack of a complete knowledge of the vocabulary used, as well as of the information about the structural relationships between the data. To overcome these problems, flexible query answering capabilities are an essential need. In this paper we present a general model for supporting approximate queries on graph-modeled data. Approximation is both on the vocabularies and the structure. The model is general in that it is not bound to a specific graph data model, rather it gracefully accommodates labeled directed/undirected data graphs with labeled/unlabeled edges. The query answering principles underlying the model are not compelled to a specific data graph, instead they are founded on properties inferable from the data model the data graph conforms to. We complement the work with a ranking model to deal with data approximations and with an efficient top-k retrieval algorithm which smartly accesses ad-hoc data structures and generates the most promising answers in an order correlated with the ranking measures. Experimental results prove the good effectiveness and efficiency of our proposal on different real world datasets.
Hyperstructures and fuzzy sets endowed with two membership functions
Authors: Irina Cristea
Venue: Fuzzy Sets and Systems (2009)

This paper contains new results concerning finite hyperstructures associated with fuzzy sets endowed with two membership functions. In general, these hyperstructures are commutative hypergroups, but not join spaces. We give some conditions such that the considered hypergroups have also this property and we present examples of their fuzzy subhypergroups. Then we analyze two sequences of join spaces and fuzzy sets associated with a finite hypergroupoid, using fuzzy sets endowed with two membership functions.
Web-based measurement: Effect of completing single or multiple items per webpage
Authors: Frances P. Thorndike, Per Carlbring, Frederick L. Smyth, Joshua C. Magee, Linda Gonder-Frederick, Lars-Göran Ost, Lee M. Ritterband
Venue: Computers in Human Behavior (2009)

The current study was conducted to determine whether participants respond differently to online questionnaires presenting all items on a single webpage versus questionnaires presenting only one item per page, and whether participants prefer one format over the other. Of participants seeking self-help treatment on the Internet (for depression, social phobia, or panic disorder), 710 completed four questionnaires (Beck Depression Inventory, Beck Anxiety Inventory, Quality of Life Index, Montgomery-Asberg Depression Rating Scale) on the Internet on two occasions. The questionnaires were either presented with one questionnaire on one webpage (e.g., BDI on one webpage) or on multiple webpages (e.g., BDI on 21 webpages with one item each). Results suggest that the four web questionnaires measure the same construct across diagnostic group (depression, social phobia, panic), presentation type (single versus multiple items per page), and order of presentation (which format first). Within each diagnostic group, factor means for all questionnaires were equivalent across presentation method and time. Furthermore, factor means varied as expected across samples (e.g., depressed group scored higher on BDI), providing evidence of construct validity. The majority of participants in each diagnostic group preferred the single item per page format, even though this format required more time.