ppxscal/embedding_network huggingface dataset:
A gesture-based american sign language game for deaf children
Authors: Seungyon Lee, Valerie Henderson, Harley Hamilton, Thad Starner, Helene Brashear, Steven Hamilton
Venue: CHI '05 extended abstracts on Human factors in computing systems (2005)

We present a system designed to facilitate language development in deaf children. The children interact with a computer game using American Sign Language (ASL). The system consists of three parts: an ASL (gesture) recognition engine; an interactive, game-based interface; and an evaluation system. Using interactive, user-centered design and the results of two Wizard-of-Oz studies at Atlanta Area School for the Deaf, we present some unique insights into the spatial organization of interfaces for deaf children.
Active and Dynamic Information Fusion for Facial Expression Understanding from Image Sequences
Authors: Yongmian Zhang, Qiang Ji
Venue: IEEE Transactions on Pattern Analysis and Machine Intelligence (2005)

This paper explores the use of multisensory information fusion technique with Dynamic Bayesian networks (DBNs) for modeling and understanding the temporal behaviors of facial expressions in image sequences. Our facial feature detection and tracking based on active IR illumination provides reliable visual information under variable lighting and head motion. Our approach to facial expression recognition lies in the proposed dynamic and probabilistic framework based on combining DBNs with Ekman's Facial Action Coding System (FACS) for systematically modeling the dynamic and stochastic behaviors of spontaneous facial expressions. The framework not only provides a coherent and unified hierarchical probabilistic framework to represent spatial and temporal information related to facial expressions, but also allows us to actively select the most informative visual cues from the available information sources to minimize the ambiguity in recognition. The recognition of facial expressions is accomplished by fusing not only from the current visual observations, but also from the previous visual evidences. Consequently, the recognition becomes more robust and accurate through explicitly modeling temporal behavior of facial expression. In this paper, we present the theoretical foundation underlying the proposed probabilistic and dynamic framework for facial expression modeling and understanding. Experimental results demonstrate that our approach can accurately and robustly recognize spontaneous facial expressions from an image sequence under different conditions.
Bruhat Order for Two Flags and a Line
Authors: Peter Magyar
Venue: Journal of Algebraic Combinatorics: An International Journal (2005)

The classical Ehresmann-Bruhat order describes the possible degenerations of a pair of flags in a linear space V under linear transformations of V; or equivalently, it describes the closure of an orbit of GL(V acting diagonally on the product of two flag varieties.We consider the degenerations of a triple consisting of two flags and a line, or equivalently the closure of an orbit of GL(V) acting diagonally on the product of two flag varieties and a projective space. We give a simple rank criterion to decide whether one triple can degenerate to another. We also classify the minimal degenerations, which involve not only reflections (i.e., transpositions) in the Weyl group SVSn = dim(V, but also cycles of arbitrary length. Our proofs use only elementary linear algebra and combinatorics.
An energy-efficient, scalable and collision-free MAC layer protocol for wireless sensor networks: Research Articles
Authors: Gaurav Jolly, Mohamed Younis
Venue: Wireless Communications Mobile Computing (2005)

Wide range of applications such as disaster management, military and security have fueled the interest in sensor networks during the past few years. Sensors are typically capable of wireless communication and are significantly constrained in the amount of available resources such as energy, storage and computation. Such constraints make the design and operation of sensor networks considerably different from contemporary wireless networks, and necessitate the development of resource conscious protocols and management techniques. In this paper, we present an energy-efficient, scalable and collision-free MAC layer protocol for sensor networks. The approach promotes time-based arbitration of medium access to limit signal interference among the transmission of sensors. Transmission and reception time slots are prescheduled to allow sensors to turn their radio circuitry off when not engaged. In addition, energy consumption due to active to sleep mode transitions is minimized through the assignment of contiguous transmission&#x002F;reception slots to each sensor. Scalability of the approach is supported through grouping of sensors into clusters. We describe an optimization algorithm for energy conscious scheduling of time slots that prevents intra-cluster collisions and eliminates packet drop due to buffer size limitations. In addition, we also propose an arbitration scheme that prevents collisions among the transmission of sensors in different clusters. The impact of our approach on the network performance is qualified through simulation.. Copyright &copy; 2004 John Wiley & Sons, Ltd.
Embedded Systems Education: How to Teach the Required Skills?
Authors: Daniel Gajski, Erwin De Kock, Hugo De Man, Mariagiovanna Sami, Ingemar Soderquist
Venue: Proceedings of the international conference on Hardware/Software Codesign and System Synthesis: 2004 (2004)

The goal of this panel is to contrast existing approaches to embedded system education with the needs in industry.
Managing email usage: a cross case analysis of experiences with electronic monitoring and control
Authors: Aidan Duane, Patrick Finnegan
Venue: Proceedings of the 6th international conference on Electronic commerce (2004)

An email system is a critical business tool. However, as electronic business activity increases, ad-hoc email implementation, prolonged management neglect and user abuse of email systems have generated negative effects. Anticipating, managing and preventing these negative effects has become increasingly important as organisations struggle to derive benefits from these systems. Many organisations try to control the negative effects of email through a combination of policies and electronic monitoring. However, monitoring can be contentious and policies are often inadequate. This paper presents the results of a multiple case study investigation of email system monitoring and control in four organisations. The study highlights the need to formulate a coordinated and comprehensive response consisting of technical, formal and informal controls. The study reveals the effectiveness of email management committees, training, policies, and sustained awareness when combined with email monitoring. The paper concludes by identifying key factors for effectively monitoring and controlling email usage.
Using Performance Counters for Runtime Temperature Sensing in High-Performance Processors
Authors: Kyeong-Jae Lee, Kevin Skadron
Venue: Proceedings of the 19th IEEE International Parallel and Distributed Processing Symposium (IPDPS'05) - Workshop 11 - Volume 12 (2005)

As energy consumption in high-performance systems has increased, thermal management has become a big challenge. Providing a cost-effective and detailed temperature sensing mechanism is crucial to effectively employ a thermal management technique. Existing hardware sensors are too costly to implement and add additional heat while software simulations fail to account for all possible hardware effects. In this paper, we describe a software solution for temperature sensing that uses real hardware resources such as performance counters. The resulting temperature model provides a detailed spatial gradient of the processor and executes at runtime. In particular, the model is configured for the Pentium 4 processor. We run SPEC2000 benchmarks to analyze the thermal behavior of applications and explain the potential benefits of using our model for temperature aware research.
Monitoring and managing presence in incoming and outgoing communication
Authors: Yuan-Chou Chung, John Zimmerman, Jodi Forlizzi
Venue: CHI '05 extended abstracts on Human factors in computing systems (2005)

The increase in channels and formats of personal communication such as email, instant messaging, and mobile phones, has generated new problems both with selecting the appropriate method to contact someone and communicating a preference for incoming communication. Some applications, such as instant messaging have partially addressed this problem with status and away messages, but this approach offers limited communication options and only works for this communication channel. Following a user-centered design approach, we explored the needs of users to manage their communication channels. Using diaries, observations, and directed story-telling interviews we generated a set of observed needs. We then generated concept scenarios that capture these needs and performed a concept validation with a focus group looking for an overlap between our observed needs and the focus groups perceived needs. This paper documents our findings and offers implications for designers addressing these communication needs.
Bioinformatics resources from the National Center for Biotechnology Information: An integrated foundation for discovery: Research Articles
Authors: Barbara A. Rapp, David L. Wheeler
Venue: Journal of the American Society for Information Science and Technology (2005)

The National Center for Biotechnology Information (NCBI) provides access to more than 30 publicly available molecular biology resources, offering an effective discovery space through high levels of data integration among large-scale data repositories. The foundation for many services is GenBank&reg;, a public repository of DNA sequences from more than 133,000 different organisms. GenBank is accessible through the Entrez retrieval system, which integrates data from the major DNA and protein sequence databases, along with resources for taxonomy, genome maps, sequence variation, gene expression, gene function and phenotypes, protein structure and domain information, and the biomedical literature via PubMed&reg;. Computational tools allow scientists to analyze vast quantities of diverse data. The BLAST&reg; sequence similarity programs are instrumental in identifying genes and genetic features. Other tools support mapping disease loci to the genome, identifying new genes, comparing genomes, and relating sequence data to model protein structures. A basic research program in computational molecular biology enhances the database and software tool development initiatives. Future plans include further data integration, enhanced genome annotation and protein classification, additional data types, and links to a wider range of resources. &copy; 2005 Wiley Periodicals, Inc.
Adapting branch-target buffer to improve the target predictability of java code
Authors: Tao Li, Ravi Bhargava, Lizy Kurian John
Venue: ACM Transactions on Architecture and Code Optimization (TACO) (2005)

Java programs are increasing in popularity and prevalence on numerous platforms, including high-performance general-purpose processors. The success of Java technology largely depends on the efficiency in executing the portable Java bytecodes. However, the dynamic characteristics of the Java runtime system present unique performance challenges for several aspects of microarchitecture design. In this work, we focus on the effects of indirect branches on branch-target address prediction performance. Runtime bytecode translation, just-in-time (JIT) compilation, frequent calls to the native interface libraries, and dependence on virtual methods increase the frequency of polymorphic indirect branches. Therefore, accurate target address prediction for indirect branches is very important for Java code.This paper characterizes the indirect branch behavior in Java processing and proposes an adaptive branch-target buffer (BTB) design to enhance the predictability of the targets. Our characterization shows that a traditional BTB will frequently mispredict a few polymorphic indirect branches, significantly deteriorating predictor accuracy in Java processing. Therefore, we propose a rehashable branch-target buffer (R-BTB), which dynamically identifies polymorphic indirect branches and adapts branch-target storage to accommodate multiple targets for a branch.The R-BTB improves the target predictability of indirect branches without sacrificing overall target prediction accuracy. Simulations show that the R-BTB eliminates 61&percnt; of the indirect branch mispredictions suffered with a traditional BTB for Java programs running in interpreter mode (46&percnt; in JIT mode), which leads to a 57&percnt; decrease in overall target address misprediction rate (29&percnt; in JIT mode). With an equivalent number of entries, the R-BTB also outperforms the previously proposed target cache scheme for a majority of Java programs by adapting to a greater variety of indirect branch behaviors.
Simulation of the filling process in molding components with micro channels
Authors: W.-B. Young
Venue: Microsystem Technologies (2005)

In micro molding of components with micro features, the ability for the polymer melt to flow into the micro channels is a crucial factor for successful molding. In this case, the molded volume is about the same as the conventional molding. The penetration distance into the microstructure depends on the flow rate and the cooling rate of the micro features, which is function of the geometric dimensions. In this study, a simplified model was established to estimate the injection distance into the micro channels of a mold insert. The effect of the mold temperature, injection rate, and micro channel dimension on the filling distance was investigated based on the model. The filling distance increases dramatically with respect to the increase of the channel width. In molding of components with micro features as those analyzed in this study, decrease of the part thickness could enhance the filling in the micro features. 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
A Remote Authentication Scheme Preserving User Anonymity
Authors: Hung-Yu Chien, Che-Hao Chen
Venue: Proceedings of the 19th International Conference on Advanced Information Networking and Applications - Volume 2 (2005)

Many smart card-based remote authentication schemes have been proposed, due to its convenience and secure computation of the smart card. However, these schemes didnýt protect the usersý identities while authenticating the users, even though user anonymity is an important issue in many e-commerce applications. In 2004, Das et al. proposed a remote authentication scheme to authenticate users while preserving the usersý anonymity. Their scheme adopted dynamic identification to achieve this function. This article points out Das et al.ýs scheme fails to protect the userýs anonymity, and propose a new scheme to conquer the weakness.
Model Mapping Using Formalism Extensions
Authors: Guy Caplat, Jean-Louis Sourrouille
Venue: IEEE Software (2005)

One of the key issues in Model Driven Architecture is model mapping--that is, the transformation of models from one formalism to another. This article deals with facets of model mapping and shows the essential role of formalism extension mechanisms throughout the development process from platform-independent models to platform-specific models and code.
Sun Certified Web Component Developer Study Guide (Exams 310-081 310-082), 1 edition
Authors: David Bridgewater
Venue:  (2005)

An integrated study system based on proven instructional methodology, this book and CD package shows you not only what--but how--to study for the SCWCD exam. The book offers complete coverage of all official exam objectives, 190+ practice exam questions, step-by-step exercises, on-the-job elements, and chapter self-tests. The CD-ROM contains MasterExam software with a complete 69-question exam, a searchable electronic book, 45+ complete web applications with source, and access to a downloadable bonus exam (with free online registration).
Interactive 3D learning contents based on 3D meme media architecture
Authors: Kimio Kashiwazaki, Yukiaki Kikuta, Makoto Ohigashi, Yuzuru Tanaka
Venue: Proceedings of the 4th international symposium on Information and communication technologies (2005)

In-house training and customer training of step-by-step assembly processes are one of the most potential applications of e-learning to manufacturing industries. Use of the 3D modeling of target products as interactive visual composite objects with some constraints defined among their components enables trainees to directly manipulate their components, and to assemble/disassemble them as if they physically exist there. In this research, we show such a 3D modeling system based on the 3D meme media architecture IntelligentBox, and its application to in-house and customer training of assembly processes.This paper shows that 3D contents have more potentiality in skill-acquisition training than 2D contents, especially for teaching mechanism and assembling/disassembling procedures. It also shows that 3D meme media architectures reduce lead time for developing 3D contents with many functions and motions. The lead time becomes about 1/5, compared to conventional tools.This paper also proposes a 3D pop-up book that embeds an individual learning content in each page, showing its 2D image. When such an image is mouse-clicked, the corresponding 3D learning content will pop up from this image. Such a 3D pop-up book can manage lots of related learning contents, and define hyperlinks among them to differently guide trainees of different levels and/or different characteristics.
Early Performance Results on the NRL SGI Altix 3000 Computer
Authors: Wendell Anderson, Robert Rosenberg, Marco Lanzagorta
Venue: Proceedings of the 2004 Users Group Conference (2004)

Since December 2002 the Naval Research Laboratory (NRL) has been evaluating an Altix 3000, the newest high performance computing system available from Silicon Graphics, Inc. (SGI). The Altix is a departure from the previous products from SGI in that instead of using MIPS processors and the IRIX operating system, the Altix uses the Intel Itanium IA-64 processor and SGI ProPack (based on Linux Red Hat) operating system. The Altix still has the brick concept of system configuration and the SGI NUMAlink for the inter-module network for the shared memory. The Altix runs under a single image of the operating system and supports parallel programming through OpenMP, MPI, CoArray, FORTRAN, and an automatic parallelizing compiler. Various codes have been evaluated with respect to their ease of portability and their performance on the Altix as compared to other high performance computers.
Object-Distribution Analysis for Program Decomposition and Re-Clustering
Authors: R. Stahl, F. Catthoor, D. Verkest
Venue: Proceedings of the 19th IEEE International Parallel and Distributed Processing Symposium (IPDPS'05) - Workshop 13 - Volume 14 (2005)

The next-generation of embedded systems confronts the designer with multi-processor systems both for performance and energy reasons. Exploiting task-level parallelism in combination with loop-level parallelism is becoming crucial. The challenge is to build compiler tools for the exploration of these types of parallelism. To achieve this goal, we have designed a transformation framework for analysis and extraction of the potential parallelism in sequential object-oriented programs. We present an inter-procedural, compositional, context and flow-sensitive algorithm for analysis of object distribution in sequential object-oriented programs. Our technique consists of three main phases: compositional inter-procedural objectdistribution analysis, construction of minimal hierarchical objectdistribution graph, and graph rendering using constrained forcedirected layout. Integration of these algorithms allows us to reduce number of prospective program decompositions with respect to program flow and object-distribution properties. The visualisation environment further extends usability of our tools for employment of semi-automated as well as fully-automated heuristics with further constraints on definition of the final task boundaries. We demonstrate the usability of our approach on a number of realistic Java applications.
On the complexity of the disjunction property in intuitionistic and modal logics
Authors: Mauro Ferrari, Camillo Fiorentini, Guido Fiorino
Venue: ACM Transactions on Computational Logic (TOCL) (2005)

In this article we study the complexity of disjunction property for intuitionistic logic, the modal logics S4, S4.1, Grzegorczyk logic, G&ouml;del-L&ouml;b logic, and the intuitionistic counterpart of the modal logic K. For S4 we even prove the feasible interpolation theorem and we provide a lower bound for the length of proofs. The techniques we use do not require proving structural properties of the calculi in hand, such as the cut-elimination theorem or the normalization theorem. This is a key point of our approach, since it allows us to treat logics for which only Hilbert-style characterizations are known.
Real-time visual tracking based on BSP-tree representations of object boundary
Authors: Vincenzo Lippiello
Venue: Robotica (2005)

In this paper an algorithm for real-time estimation of the position and orientation of a moving object using a video camera is presented. The algorithm is based on the extended Kalman filter which iteratively computes the object pose from the position measured in the image plane of a set of feature points of the object. A new technique is proposed for the selection of the optimal feature points based on the representation of the object geometry by means of a Binary Space Partitioning (BSP) tree. At each sample time, a visit algorithm of the tree allows pre-selecting all the feature points of the object that are visible from the camera in the pose predicted by the Kalman filter. A further selection is performed to find the optimal set of visible points to be used for image feature extraction. Experimental results are presented which confirm the feasibility and effectiveness of the proposed technique.
Towards Position Feedback Control Interfaces: Application to a Virtual Assembly of Flexible Parts
Authors: Alexei Mikchevitch, Jean-Claude Leon, Alexandre Gouskov
Venue: Proceedings of the First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (2005)

Virtual Assembly/Disassembly (A/D) study during the product design is an important aspect to improve the performance and quality of products. Usually, existing Virtual Reality (VR) systems allow to simulate the A/D operations of rigid parts. However, it is difficult to model accurately the virtual A/D operations of flexible parts given their complex behavior. The aim of this work is to analyze current VR interfaces for their application in A/D of flexible parts. Current VR devices are mainly restricted to the specification of geometric input data for virtual A/D. This is not physically correct from the point of view of userýs action generation and does not take into account particularities of flexible partýs behavior. To this end, different experiments have been performed to justify some limits of the use of current VR devices in realistic flexible part simulation. The necessity of position control device development is justified to supply satisfactory results during the A/D of flexible parts.