ppxscal/embedding_network huggingface dataset:
Poetics of performative space
Authors: Xin Wei Sha
Venue: AI Society (2007)

The TGarden is a genre of responsive environment in which actor&#x2013;spectators shape dense media sensitive to their movements. These dense fields of light, sound, and material also evolve according to their own composed dynamics, so the agency is distributed throughout the multiple media. These TGardens explore open-ended questions like the following: what makes some time-based, responsive environments compelling, and others flat? How can people improvise gestures without words, that are individually or collectively meaningful? When and how is a movement intentional, or collectively intentional? This paper introduces what has been at stake behind the experimental work: subjectivation, moving from technologies of representation to technologies of performance, and the potential for ethico-aesthetic novelty.
MPEG video error concealment for ATM networks
Authors: A. Tsai
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 04 (1996)

An error concealment scheme for Motion Picture Experts Group (MPEG) video networking is proposed. During video transmission, video packet loss occurs in the presence of network congestion and buffer overflow. This phenomenon of packet loss transforms into single or multiple macroblock loss in the decoding process, which can severely degrade the viewing quality. The new method differs from the conventional concealment by its exploitation of temporal redundancies in a large scale. In many applications where there is significant camera motion (e.g., remote surveillance), the evolution from frame to frame can be well described by the affine motion. The motion estimation is carried out by registering images within a multiresolution pyramid. The global motion is estimated in the lowest resolution level, and is then used to update and refine the local motion. The local motion is further refined iteratively at higher resolution levels. An affine transform is used to extract translation, scaling and rotation parameters.
Modelling the context of continuing professional development
Authors: F. K. Fink
Venue: Proceedings of the Frontiers in Education Conference, 2001. on 31st Annual - Volume 01 (2001)

Engineering competence is a major competitive parameter in knowledge society, especially in the industry subject to very fast innovation processes. Being one step ahead of the competitors with incorporation of new knowledge in the products puts focus on the importance of human resources as a significant resource for industrial development. Continuing professional development of engineering staff is therefore very important. Based on research carried out as a Leonardo Pilot project supported by the European Union, a model for the continuing education process is described. The elements of the model and their interaction are discussed. It is important to achieve a joint understanding of engineering professional development and to acknowledge that it is not the university education once more. Part of the modelling is based on interviews with development engineers from the very dynamic mobile communication industry.
Multi-hypothesis, volumetric reconstruction of 3-D objects from multiple calibrated camera views
Authors: P. Eisert
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 06 (1999)

In this paper we present a volumetric method for the 3-D reconstruction of real world objects from multiple calibrated camera views. The representation of the objects is fully volume-based and no explicit surface description is needed. The approach is based on multi-hypothesis tests of the voxel model back-projected into the image planes. All camera views are incorporated in the reconstruction process simultaneously and no explicit data fusion is needed. In a first step each voxel of the viewing volume is filled with several color hypotheses originating from different camera views. This leads to an overcomplete representation of the 3-D object and each voxel typically contains multiple hypotheses. In a second step only those hypotheses remain in the voxels which are consistent with all camera views where the voxel is visible. Voxels without a valid hypothesis are considered to be transparent. The methodology of our approach combines the advantages of silhouette-based and image feature-based methods. Experimental results on real and synthetic image data show the excellent visual quality of the voxel-based 3-D reconstruction.
Problem of Model Selection for Estimation of Equipment Remaining Life
Authors: Henryk Maciejewski, George Anders
Venue: Proceedings of the 2nd International Conference on Dependability of Computer Systems (2007)

This work discusses an approach to solve a problem of estimation of equipment remaining life based on historical failure records. An approach typically adopted to solve this problem is based on parametric models of equipment lifetime, fitted to failure data. Since the lifetime data is most often censored, the model fit as well as goodness of fit procedures should handle censored observations. While fitting a parametric model to censored data is readily available in statistical packages, an objective way to select the best fit model is lacking in most data analysis tools, even those dedicated to reliability analysis. Goodness of fit in the censored data case is verified based on probability plots, which makes the task of best fit model selection rather subjective. This work presents a method to make this procedure more objective. The proposed approaches are illustrated by a numerical example based on real life data.
Input sequence estimation and blind channel identification in HF communication
Authors: M. Khames
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 05 (2000)

A new algorithm is proposed for reliable communication over HF tropospheric links in the presence of rapid channel variations. In the proposed approach, using fractionally spaced channel outputs, sequential estimation of channel characteristics and input sequence is performed by utilizing subspace tracking and Kalman filtering. Simulation based comparisons with the existing algorithms show that the proposed approaches significantly improve the performance of the communication system and enable us to utilize HF communication in bad conditions.
Numerical simulation of hydrogel-based pH-responsive biosensors in BioMEMS
Authors: Hua Li, Y. K. Yew, K. Y. Lam, T. Y. Ng
Venue: Proceedings of the Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (2003)

Applications of hydrogels in BioMEMS as mircoscale sensors/actuators have increasingly driven wide range effort of researchers since the bio-stimuli-responsive phenomena of hydrogels are observed, including the stimulation of pH, antigens, glucose, temperatures, pressure, etc. However, most of the studies are conducted through experimental works. A few theoretical works done are based on some over simplified assumptions. In this paper, a mathematical model, based on the chemo-electro-mechanical coupling formulations, is presented and known as the Multi-Effect-Coupling for pH-stimulus (MECpH) model. The MECpH model is developed to simulate the response of pH-sensitive hydrogels stimulated by pH value of the surrounding solution. This mathematical model is constructed from the nonlinear partial differential Nernst-Planck diffusive equations for diffusing ion species, and coupled with both the Poisson equations for electric potential and mechanical equilibrium equation for deformation of hydrogels. In order to solve the present MECpH model, consisting of a set of coupled nonlinear partial differential equations, a novel meshless technique, Hermite-Cloud method, is employed to simulate the responsive performance of the pH-sensitive hydrogels with varying pH in the bathing solution. Finally, one-dimensional steady-state simulations are carried out and compared with experimental results. It is shown that the presently developed MECpH model can simulate numerically and predict accurately the swelling response of the pH-responsive hydrogel.
Prototyping convergence services
Authors: I. Skenderoski
Venue: BT Technology Journal (2007)

Asia is an interesting place to be. Interesting because it is different from everywhere else. Different not because of the enormous market potential being exploited by every company under the sun but different because its population has an almost universal thirst to explore and consume new technology to simplify their life or simply to make it more fun and intriguing. In contrast to the more conservative approach to adopting new technology across Europe, in the developed Asian economies you could classify almost everyone as an early adopter in European terms. It is like living in a `geek' land where everyone wants to have the latest gadget in their hands or use the latest service on offer. A large percentage of the Asian youth is now living in an on-line, virtual world [1]. The future appears to be closer and come faster here, and European technology companies can learn a lot by analysing the technology trends in this region.
Reconfigurable Frame Parser Design for Multi-Radio Support on Asynchronous Microprocessor Cores
Authors: Dipnarayan Guha, Thambipillai Srikanthan
Venue: Proceedings of the International Conference on Computing: Theory and Applications (2007)

The abstract is to be in fully-justified italicized text, at the top of the left-hand column as it is here, below the author information. Designing a reconfigurable frame parser to translate radio protocol descriptions to asynchronous microprocessor cores is a relatively recent concept. As asynchronous microprocessors do not run an operating system, the paradigm of multi-radio support on these cores need to be investigated in a different light than the conventional Software Defined Radios. The main challenge in such a design is realizing multi-radio FFD (fully functional device) emulation on an extremely low-memory footprint before translating it to the asynchronous core. In this work-in-progress paper, we describe some of the design methodologies involved in designing a reconfigurable radio MAC frame parser for translating multi-radio protocol description to asynchronous processor cores. We intend to realize this run-time in hardware and are working to realize a prototype on FPGA. The prototype would demonstrate a design methodology to include asynchronous instruction set targets in dynamic run-time multi-language compiler translation.
3-D MUSIC with polynomial rooting for near-field source localization
Authors: Hsien-Sen Hung
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 06 (1996)

The bearing, elevation, and range estimation of near-field narrow-band sources from data observed across an array of sensors is considered. For high-resolution source localization, the multiple signal classification (MUSIC) algorithm is modified and extended to its 3-D version by accounting for the spherical curvature and spreading factor in the array manifold. However, the simultaneous estimation of bearing, elevation, and range from the 3-D MUSIC spectrum requires exhaustive multidimensional search. In order to alleviate the computational load, an alternative algorithm is proposed. The proposed algorithm involves a search in the range domain combined with polynomial rooting, which replaces the search in the azimuth-elevation domain, for bearing and elevation estimation.
Web/DVD-based multimedia architecture simulator
Authors: E. Asai
Venue: Proceedings of the Frontiers in Education Conference, 2001. on 31st Annual - Volume 01 (2001)

This paper describes a Web/DVD-based multimedia architecture simulator and courseware which the authors have developed for a course module entitled "multimedia architectures". The goal of this module is to study architectural enhancements to microprocessors to support multimedia applications. The courseware provides lecture material including audio/video lecture recordings and slides, references to relevant websites, a search engine, and various Java applets and the multimedia architecture simulator. The simulator is Web/DVD-based and runs on-line. Most existing simulators require the user to go through the steps of downloading, installing, and configuring the software. Their online simulator has the advantage of being able to run directly from the web browser without any such steps. The simulator has the complete functionality of a multimedia-oriented computer system which effectively simulates an SIMD (single instruction multiple data) architecture. The simulator can compile, run, and debug image processing programs. Using program examples and projects, students can experiment with the concepts introduced in the lecture. The integration of the Web-based simulators, lectures, references and search mechanism online creates an effective course environment.
Shape from multi-rate filtering
Authors: A. A. Bharath
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 01 (2000)

We describe a multi-rate, compact Hough transform for shape detection. The approach is novel in its application of 2D steerable shape kernels at each level of a multi-rate pyramidal decomposition to construct accumulator spaces. Employing such filtering operations can provide efficiency gains in searching for particular closed shapes in digital images, whilst maintaining code simplicity and freedom from early thresholding operations.
Some properties of generalized factorable 2-D FIR filters
Authors: R. Manduchi
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 04 (1996)

A paper by Chen and Vaidyanathan (1993) describes a method for designing multidimensional (MD) filters with spectral support in the shape of a parallelepiped, starting from M 1-D prototypes. Such filters require a number of elementary operations per input sample (OPS) that grows linearly with the size of each 1-D prototype. As a matter of fact, they belong to the general class of generalized factorable (GF) filters, which we define here. Beside the computational efficiency (in both the design and the implementation), we show in this work that GF filters share some interesting properties (relative to symmetry and frequency response constraints). 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
PIRANHA filter for communication system robustness
Authors: Gang Li
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 03 (1999)

The designed rejection filter is of recursive prediction error (RPE) form and uses a special constrained model of infinite impulse response (IIR) with a minimal number of parameters. The so-called PIRANHA filter is made up independent cascaded adaptive cells realising high rejection at certain frequencies. The convergent filter is characterised by highly narrow-bandwidth and uniform notches of desired shape. Results from simulations illustrate the performance of the algorithm used in the PIRANHA filter under a wide range of conditions and situations. This paper intends to give a description of the PIRANHA structure, the mechanism of its interference detection monitoring and the filter stability control. The PIRANHA filter has shown to be an efficient solution for detection, tracking and elimination of multiple high power CWIs and narrow band jammers.
The difficult part of capstone design courses
Authors: B. Bond
Venue: Proceedings of the Frontiers in Education Conference on 1995. Proceedings., 1995 vol 1. - Volume 01 (1995)

The capstone design course allows students to synthesize solutions to open ended problems. However without some urging, the students tend to focus on the easy part of the project-a single technical solution. The paper deals with some experience in bringing the more demanding aspects of technical projects into the design course. These include: (1) defining the real project with your customer "how will we know when we're done?". (2) Planning for success. Resource analysis-time, money knowledge, equipment and all of their interactions. (3) What is the best solution? Holding design reviews and comparing alternatives. (4) Communication skills. How do you keep the design team, the boss, and the customer up to date? (5) Presentation of project information in written and verbal forms. (6) Team dynamics. How to support the development of high performance teams? (7) Social skills. Why do I have to deal differently with Mary than with Anne to get their commitment and support? (8) Conflict. Why you need it and how to manage it. Each of the above topics could be a course in itself, but the capstone design course is an ideal place to discuss and exhibit the interaction of these complex issues. These discussions sow the seeds that will allow our graduates to perform at a higher level in all of their future project activities. 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
Mining Software Repositories for Traceability Links
Authors: Huzefa Kagdi, Jonathan I. Maletic, Bonita Sharif
Venue: Proceedings of the 15th IEEE International Conference on Program Comprehension (2007)

An approach to recover/discover traceability links between software artifacts via the examination of a software system's version history is presented. A heuristic-based approach that uses sequential-pattern mining is applied to the commits in software repositories for uncovering highly frequent co-changing sets of artifacts (e.g., source code and documentation). If different types of files are committed together with high frequency then there is a high probability that they have a traceability link between them. The approach is evaluated on a number of versions of the open source system KDE. As a validation step, the discovered links are used to predict similar changes in the newer versions of the same system. The results show highly precision predictions of certain types of traceability links.
Learning computer programming and role of errors in design
Authors: Gennady Lomako
Venue: ACM SIGCSE Bulletin (2007)

Computer programming teaching should include problem analysis and a hierarchical decomposition of objects and actions that enable programmers to develop meaningful models of objects and multi-layered interfaces and thus be able to choose the level of complexity and protection they need. Programmers are expected to use error-detecting and correcting codes. Application development should include evaluation methods that could assess design solutions during program development and avoid errors during program execution. We discuss a software development and test diagram and programming project requirements.
Biologically inspired mobility models for energy conservation in sensor networks
Authors: J. Rao, S. Biswas
Venue: Proceedings of the 2nd IEEE workshop on Embedded Networked Sensors (2005)

This paper presents a mechanism for extending network life by introducing energy-aware mobility in wireless sensor networks. The concept of mobility for energy saving has been motivated by a natural grouping behavior that is observed in Emperor penguin communities in the Antarctic region. In this paper, we first draw a parallel between the heat loss of a penguin at the group periphery, and the routing energy burden of a sensor node near base stations. Then we develop a distributed mobility algorithm that works based on local energy information and makes sure that the energy load across sensor nodes in a network are evenly distributed for collective extension of the network life. We evaluate the protocol, and compare it with the performance upper bound derived from a centralized version of the algorithm. The results demonstrate that using the distributed algorithm for controlled node mobility it is possible to significantly extend the network life. It is also shown that this holds in situations where the energy cost of physical node mobility is modeled up to four orders of magnitude larger than the energy cost for packet communication.
Compilation Techniques for Real-Time Java Programs
Authors: Mike Fulton, Mark Stoodley
Venue: Proceedings of the International Symposium on Code Generation and Optimization (2007)

In this paper, we introduce the IBM® WebSphere® Real Time product, which incorporates a virtual machine that is fully Java compliant as well as compliant with the Real-Time Specification for Java (RTSJ). We describe IBM's real-time Java enhancements, particularly in the area of our Testarossa (TR) ahead-of-time (AOT) compiler, our TR just-in-time (JIT) compiler, and our Metronome[2] deterministic Garbage Collector (GC). The main focus of this paper is on the various techniques employed by the TR compilers to optimize and regulate the performance of code running in a real-time Java environment through a simple Java source code example. Through the example, we highlight the additional checks required to provide a conformant RTSJ implementation as well as the performance issues with ahead-of-time code generation and the overheads required to support Metronome. We show how these checks are implemented in a production JVM, and then report the cost of the real-time changes in practice for the example as well as the SPECjvm98 benchmark suite, SPECjbb2000, and SPECjbb2005.
Knowledge management to support distributed cognition and behavior in knowledge-intensive and computer-mediated work: a manufacturing perspective
Authors: Mark A. Vonderembse, T. S. Ragu-Nathan
Venue:  (2006)

To survive and prosper in a rapidly changing business environment, firms have an interest in integrating knowledge to reinforce effectiveness, diffusing knowledge to increase problem-solving capability, and creating knowledge to enhance innovation. The success of knowledge management hinges on people's cognition and behavior because knowledge resides in people and people create knowledge. Knowledge management that supports distributed cognition and behavior enables organizational members to effectively coordinate expertise, quickly respond to market changes, and continually create knowledge. This study employs a research framework that explains knowledge management to support distributed cognition and behavior. Specifically, the research framework examines the relationship among a knowledge-sharing climate, knowledge quality, information systems quality, cognitive empowerment, perspective taking, perspective making, and innovation. Drawing upon a sample of 208 firms, this study tests the proposed research framework by applying structural equation modeling. Results indicate that a knowledge-sharing climate and information systems quality have a direct, positive impact on knowledge quality. A knowledge-sharing climate and knowledge quality influence cognitive empowerment. Cognitive empowerment affects knowledge transfer (i.e., perspective taking and perspective making). Perspective taking appears to enhance perspective making. Finally, perspective making has a direct, positive influence on innovation. The results provide a basis for understanding the critical aspects as firms create cross-functional teams to produce innovation. Knowledge repository systems are static. However, knowledge management should respond to changes in a timely manner. This study provides managerial insights to dealing with changes and fostering innovation in the dynamics of knowledge management.