ppxscal/embedding_network huggingface dataset:
A novel minloop SB design to improve FPGA routability
Authors: JIanDe Yu, JinMei Lai
Venue: Proceeding of the ACM/SIGDA international symposium on Field programmable gate arrays (2009)

In this paper, we present a new design of a switch box of an FPGA that requires less channel width than conventional designs in routing the same circuit. The design, called a Minloop switch box, is based on the method of minimum-loop-size maximization in routing resources. Experimental results show that the Minloop switch box requires 17.7%, 8.0% and 2.4% less channel width than the classic fabric of Disjoint, Universal and Wilton switch boxes, respectively.
Uncertainty quantification for systems of conservation laws
Authors: Gaël Poëtte, Bruno Després, Didier Lucor
Venue: Journal of Computational Physics (2009)

Uncertainty quantification through stochastic spectral methods has been recently applied to several kinds of non-linear stochastic PDEs. In this paper, we introduce a formalism based on kinetic theory to tackle uncertain hyperbolic systems of conservation laws with Polynomial Chaos (PC) methods. The idea is to introduce a new variable, the entropic variable, in bijection with our vector of unknowns, which we develop on the polynomial basis: by performing a Galerkin projection, we obtain a deterministic system of conservation laws. We state several properties of this deterministic system in the case of a general uncertain system of conservation laws. We then apply the method to the case of the inviscid Burgers' equation with random initial conditions and we present some preliminary results for the Euler system. We systematically compare results from our new approach to results from the stochastic Galerkin method. In the vicinity of discontinuities, the new method bounds the oscillations due to Gibbs phenomenon to a certain range through the entropy of the system without the use of any adaptative random space discretizations. It is found to be more precise than the stochastic Galerkin method for smooth cases but above all for discontinuous cases.
Equivalent instances of the simple plant location problem
Authors: Bader F. AlBdaiwi, Boris Goldengorin, Gerard Sierksma
Venue: Computers Mathematics with Applications (2009)

In this paper we deal with a pseudo-Boolean representation of the simple plant location problem. We define instances of this problem that are equivalent, in the sense that each feasible solution has the same goal function value in all such instances. We further define a collection of polytopes whose union describes the set of instances equivalent to a given instance. We use the concept of equivalence to develop a method by which we can extend the set of instances that we can solve using our knowledge of polynomially solvable special cases.
"Feed the Fish": an affect-aware game
Authors: Mohammad Obaid, Charles Han, Mark Billinghurst
Venue: Proceedings of the 5th Australasian Conference on Interactive Entertainment (2008)

In this paper we report on an affective gaming interface and a user study which evaluates user response to affective gaming. "Feed the Fish" is an affect-aware game system which takes a player's facial expressions as input and dynamically responds to the player by changing the game elements. The goal of this system is to use human expressions to build a communication channel between the game and players so playing the game can be more enjoyable. We describe the implementation of the game system and discuss the result of the user study we have conducted with 22 participants. Participants enjoyed the game with the affect-aware system more than a non affective version of the game, and they felt it was more exciting since the game was more challenging and dynamic.
Recognizing Facial Expressions Using Model-Based Image Interpretation
Authors: Matthias Wimmer, Christoph Mayer, Bernd Radig
Venue: Multimodal Signals: Cognitive and Algorithmic Issues: COST Action 2102 and euCognition International School Vietri sul Mare, Italy, April 21-26, 2008 Revised Selected and Invited Papers (2009)

Even if electronic devices widely occupy our daily lives, human-machine interaction still lacks intuition. Therefore, researchers intend to resolve these shortcomings by augmenting traditional systems with aspects of human-human interaction and consider human emotion, behavior, and intention.This publication focusses on one aspect of this challenge: recognizing facial expressions. Our approach achieves real-time performance and provides robustness for real-world applicability. This computer vision task comprises of various phases for which it exploits model-based techniques that accurately localize facial features, seamlessly track them through image sequences, and finally infer facial expressions visible. We specifically adapt state-of-the-art techniques to each of these challenging phases. Our system has been successfully presented to industrial, political, and scientific audience in various events.
Cryptography Overhead Evaluation and Analysis for Wireless Sensor Networks
Authors: Wei Liu, Rong Luo, Huazhong Yang
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 03 (2009)

Security is a critical factor to deploy large scale wireless sensor networks. Limited resource constraints, such as computation power, program memory, SRAM, and energy budget, present a big challenge to implement existing cryptography algorithms. In this paper, we evaluate the overhead of comprehensive cryptography algorithms suitable for wireless sensor networks. All the factors that may affect algorithm choice, including SRAM which is critical for network operations and always ignored by previous works, are analyzed. According to our experimental results, SkipJack, RC4, and HIGHT are the best candidates for time critical or energy efficient applications. However, if SRAM is more stringent than time and energy, TEA, SEA, and SkipJack are better than other candidates because their SRAM requirements are non-key-related.
Design and analysis of a CMOS passive ΣΔ ADC for low power RF transceivers
Authors: Feng Chen, Bertan Bakkaloglu, Srinath Ramaswamy
Venue: Analog Integrated Circuits and Signal Processing (2009)

Design and analysis of a &Sigma;&Delta; modulator with a passive switched capacitor loop filter is presented. Design steps for optimum loop filter design for quantization noise suppression and thermal noise reduction is outlined. Design specifications for sampling clock phase noise, reference buffer and input buffer settling is analyzed. Presented design has a 2nd-order loop filter and uses only metal-metal capacitors and thin oxide digital transistors with no additional components occupying less than 0.1 mm2 silicon area in 0.13 &micro;m CMOS digital process. Measurement results show that the ADC achieves 80 dB peak SNR at a 100 kHz integration bandwidth with 1 pJ/sample conversion efficiency. With decimation filter power consumption of 0.22 mW at 104 MHz sampling rate, the ADC consumes only about 1 mA at 1.5 V for each channel.
Data collection system design in SSM networks with unicast feedback: server message definition
Authors: Martin Koutny, Pavel Silhavy, Jiri Hosek
Venue: WSEAS Transactions on Information Science and Applications (2009)

The system for mass data collection with cumulative acknowledge is described in this paper. A server message for cumulative acknowledgement is specified. The system is development for single source multicast networks. These networks are characterized by the ability to communicate with concrete network nodes. The groups of nodes are possible to create in these networks. It makes these networks more efficient than the any source multicast networks. The purpose of the first part is to design and describe the system. In the next part are the possible process mechanism discussed. We also introduce an initialization, synchronization and the message transfers. In last part, we discuss a future work.
Bluetooth channel quality estimation and adaptive packet selection strategy
Authors: Xiao Qili, Xiao Qimin, Guo Feng
Venue: Proceedings of the 3rd WSEAS international conference on Computer engineering and applications (2009)

The transmission performances of Bluetooth 2.0+EDR specification are analyzed, including average maximum throughput under different channel quality. A new adaptive select strategy based on the history of the packets errors is suggested. The channel quality is estimated by the packet error statistics of recent transmission packets. The type of next packet need to send is judged and can be adjusted dynamically. The simulation results show that when the number of the packets used to be decided is about 30, the throughput is greatly close to the average maximum throughput. The strategy takes little overhead of the hardware and software. The judgment procedure is simple and quick. The strategy can be used in the Bluetooth system which has any control unit.
IT Challenges for 2009: Fixing the IT Infrastructure
Authors: Thomas Jepsen
Venue: IT Professional (2009)

With a new administration in Washington, we need to focus attention on the nation's information technology infrastructure if we want to remain competitive in the global economy. Specifically, we need to extend our broadband network, implement a national health information network, build a new air traffic control system, create a "smart" electrical grid, and fix the Food and Drug Administration's monitoring system. We also need to increase our investment in research and technical education. A public/private partnership will be required to accomplish all this.
Inside Lightroom 2: The serious photographer's guide to Lightroom efficiency
Authors: Richard Earney
Venue:  (2008)

If you're comfortable using the basic features of Lightroom, but really want to push the envelope with this powerful software, 'Inside Lightroom' by acclaimed photographer and Lightroom Beta-tester Richard Earney is a must-have. Bypassing the obvious features covered in a variety of existing Lightroom books, Richard focuses on customizing Lightroom to suit your workflow. For example, he covers using presets to automate the way Lightroom deals with photos, optimizing your Lightroom workflow for your own hardware and preferences. He covers sophisticated calibration techniques, helping you render your pictures accurately both onscreen and in print. Basically -- the hidden information for this powerful software. Unlike the other 'guides' on the market, this book doesn't tell you what you already know. Instead, it focuses on what you don't.'Inside Lightroom' also showcases the brand-new features of the software, available only in Lightroom 2.0, so if you have recently upgraded from Lightroom 1, this book will help you reap the benefits of your investment. Practical, jargon-free and full of stunning images, Richard Earney's book should be on the shelf of every Lightroom user. * No-nonsense guide shows you the advanced features so you can use the power of Lightroom to speed up your workflow * Includes in-depth information on presets enabling you to customize Lightroom, whatever your style * Written by Richard Earney, established expert on Lightroom
Popularized Spatial Information Service Platform Based on Multi-Major GIS
Authors: Jin Luo, Dian-Hong Wang, Xiao-Fang Zu, Fa-Yong Zhang
Venue: Proceedings of the 2009 Second International Workshop on Knowledge Discovery and Data Mining (2009)

This article regarded the popularization of GIS as a starting point. It researched the feasibility of the transformations based on special GIS to popular GIS. It proved the popular Spatial Information Service Platform structure mainly from data base, technical feasibility, system framework, function frame and user perspective. And it also gave a future construction idea about popular spatial information service platform based on distributed. The paper put forward a new mode to quickly set up a multi-major,three-dimensional,multi-level space service system in theory. This can tap the value of the existing GIS system fully, and reduce the waste of resources, which has the practical significance and the reference to setting up a resource-saving and harmonious society to the Digital City.
Hospital information systems tutorial: a guide for computer scientists and practitioners
Authors: David J. Mishelevich
Venue: Proceedings of the May 4-7, 1981, national computer conference (1981)

With the United States spending in excess of two hundred billion dollars per year on health care, it is clear that only the small percentage of that likely to be dedicated to computer-based hospital information systems offers both a tremendous opportunity and a responsibility for those in computing. This is particularly true because both software and hardware technologies have evolved to the point where comprehensive online systems are now functionally and financially a practical reality. This tutorial provides an overview of the software and hardware approaches that have been successfully applied, the delineation of success factors in the realm of human engineering, a cost per incident of service distribution methodology, and a review of cost/benefit considerations. The session is directed to those in the computing arena as opposed to those in health care, but the items covered will be of direct application to those on the medical side as well.
A new method for the estimation of variance matrix with prescribed zeros in nonlinear mixed effects models
Authors: Djalil Chafaï, Didier Concordet
Venue: Statistics and Computing (2009)

We propose a new method for the Maximum Likelihood Estimator (MLE) of nonlinear mixed effects models when the variance matrix of Gaussian random effects has a prescribed pattern of zeros (PPZ). The method consists of coupling the recently developed Iterative Conditional Fitting (ICF) algorithm with the Expectation Maximization (EM) algorithm. It provides positive definite estimates for any sample size, and does not rely on any structural assumption concerning the PPZ. It can be easily adapted to many versions of EM.
Mixing it up: recommending collections of items
Authors: Derek L. Hansen, Jennifer Golbeck
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

Recommender systems traditionally recommend individual items. We introduce the idea of collection recommender systems and describe a design space for them including 3 main aspects that contribute to the overall value of a collection: the value of the individual items, co-occurrence interaction effects, and order effects including placement and arrangement of items. We then describe an empirical study examining how people create mix tapes. The study found qualitative and quantitative evidence for order effects (e.g., first songs are rated higher than later songs; some songs go poorly together sequentially). We propose several ideas for research in this space, hoping to start a much longer conversation on collection recommender systems.
Experimental characterization of sectorized antennas in dense 802.11 wireless mesh networks
Authors: Anand Prabhu Subramanian, Henrik Lundgren, Theodoros Salonidis
Venue: Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing (2009)

Sectorized antennas can increase wireless network capacity through greater spatial reuse. Despite their increasing popularity, their real-world performance characteristics in dense wireless mesh networks are not well understood. This paper conducts a systematic experimental study on a mesh network testbed using commodity 802.11 hardware and multi-sector antennas. Our study results in the following main observations. (i) Sector selection should be based on explicit measurement in all sectors, though the measurement overhead can be significantly reduced by exploiting spatio-temporal characteristics of the best sector. (ii) Multi-sector activation typically reduces the signal strength of a link compared to single sector activations due to antenna design constraints. (iii) Spatial reuse is constrained by characteristics of antenna radiation pattern in different sectors (iv) Physical layer capture reduces the effect of directional hidden terminal problem. Finally, we discuss the implications of these observations on the design of practical directional MAC and topology control protocols.
A BEM for Estimation of Time-varying Channels in OFDM
Authors: Shaoping Chen, Guangfa Dai, Wengui Rao
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 01 (2009)

A Basis Expansion Model (BEM) for time-varying channels is proposed. It overcomes the effects of Gibbs phenomenon of the widely used Complex-Exponential BEM (CE-BEM) by using baseline tilting and therefore significantly reduces the modeling error. Theoretical analysis and simulation results show that the modeling error of the proposed BEM is obviously lower than those of the Complex-Exponential BEM (CE-BEM) and the General Complex-Exponential BEM (GCE-BEM).
New line tariffs and their impact on network design
Authors: Mario Gerla
Venue: Proceedings of the May 6-10, 1974, national computer conference and exposition (1974)

The advances in computer and communication technology have made available several new techniques (packet-switching, satellite multiple access, loops, packet radio, etc.) for communication network design which, in addition to the traditional techniques (point-to-point, multidrop, line-switching, etc.) provide a large gamut of alternatives for network users. At the same time, the increasing competition between common and specialized carriers is making available to the user a variety of leased and switched, voice and data communication services with different qualities and different rates. The user who wants to implement a private communication network is therefore faced with a variety of possible alternatives, corresponding to different techniques and line tariffs.
Digitizing North Indian Music: Preservation and Extension using Multimodal SensorSystems, Machine Learning and Robotics
Authors: Ajay Kapur
Venue:  (2008)

This book describes how state of the art computermusic technology can be used todigitize, analyze, preserve and extend North Indianclassical music performance. Custom builtcontrollers, influenced by the Human ComputerInteraction community, serve as new interfaces togather musical gestures from a performing artist.Designs on how to modify a Tabla, Dholak, and Sitarwith sensors and electronics are described.Experiments using wearable sensors to captureancillary gestures of a human performer are alsoincluded. A twelve-armed solenoid-based roboticdrummer was built to perform on a variety oftraditional percussion instruments from around India.The book also describes experimentation oninterfacing a human sitar performer with the roboticdrummer. Experiments include automatic tempotracking, rhythmic accompaniment methods and digitaltranscription techniques. This work draws onknowledge from many disciplines including: music,computer science, electrical engineering, mechanicalengineering and psychology. The goal is to set aparadigm on how to use technology to aid in thepreservation of traditional art and culture.
A grid based software architecture for delivery of adaptive and personalised learning experiences
Authors: Angelo Gaeta, Matteo Gaeta, Pierluigi Ritrovato
Venue: Personal and Ubiquitous Computing (2009)

This paper is centred on one of the main results of the ELeGI project, namely its software architecture for the delivery of personalised formal-learning experiences. The architecture has been designed and developed: (1) taking into account a general model for the personalisation of learning experiences, allowing us to obtain a solution that is flexible with respect to the pedagogies, and (2) on top of service oriented grid technologies, allowing us to obtain several advantages in the process of creation and delivery of personalised learning experience like, for instance, ubiquitous and seamless access to heterogeneous learning resources distributed over the network. In order to validate our result, the first prototype of the ELeGI architecture has been deployed on a virtual organisation consisting of three geographically distributed nodes. Each node of the VO provides services and learning resources that have been adopted in the creation and delivery of a personalised learning experience about the Torricelli's law and based on the virtual scientific experiment model. The case of study has been successfully executed and has given us a proof of our assumptions related to the added value of the service oriented grid mainly in terms of: (1) capabilities to access educational resources distributed over the network, that is relevant in achieving the personalisation of learning experiences, and (2) high level of dynamicity and adaptiveness in the creation and delivery processes of a personalised learning experience.
Stability of an integro-differential equation
Authors: Chuhua Jin, Jiaowan Luo
Venue: Computers Mathematics with Applications (2009)

In this work we study a scalar integro-differential equation and give some new conditions ensuring that the zero solution is asymptotically stable by means of the fixed-point theory. Our work extends and improves the results in the literature.
Are we living in a robot cargo cult?
Authors: Ylva Fernaeus, Mattias Jacobsson, Sara Ljungblad, Lars Erik Holmquist
Venue: Proceedings of the 4th ACM/IEEE international conference on Human robot interaction (2009)

We use the Cargo Cult metaphor to discuss visions, methods and communication of robot research. Essentially cargo cult involves performing of imitative rituals that are conducted without understanding the underlying cause of a phenomenon. We discuss how this is an ongoing challenge within the field of HRI, and what researchers could do to avoid contributing to a robotic cargo cult.
Drivers and Barriers of E-banking Adoption: Case of Karafarin Bank
Authors: Amir Albadvi, Roudabeh Gharaee
Venue: Proceedings of the 2009 Third International Conference on Digital Society (2009)

This paper investigates drivers, determinants and barriers of electronic banking adoption in Iran. Results of the analysis of information gathered through comprehensive interviews with the key managers of the pioneer private bank for e-banking adoption in Iran(KB) indicate that the adoption status is the transition of pre-development to development phase and the main drivers for adopting e-banking are downsizing, gaining competitive advantage, increasing market share and improving bank’s image. The analysis further reveals that inefficient ICT infrastructure, political challenges and traditional organizational culture are barriers for adoption of e-banking in Iran. We conclude that banks in Iran need to web-enable themselves sooner or later and in order for the banks to overcome some of their barriers identification of the drivers for e-banking adoption would be a helpful tool.