ppxscal/embedding_network huggingface dataset:
An adaptable communications and control system for motor- and sensory-handicapped people
Authors: David Spector
Venue: Issue 32 (Spring 1983) (1983)

This paper describes, in general terms, a proposed portable device to aid people with significant impairment of motor and/or sensory functions. The emphasis is on a flexible microprocessor-based system composed of input modules, output modules, and an internal semantic representation. This system organization is easily expandable to accommodate new hardware, easily customizable to meet the needs of a particular user, and made of standard components for ease of manufacturing.
Wavelets and curvelets for image deconvolution: a combined approach
Authors: Jean-Luc Starck, Mai K. Nguyen, Fionn Murtagh
Venue: Signal Processing (2003)

We propose in this paper a new deconvolution approach, which uses both the wavelet transform and the curvelet transform in order to benefit from the advantages of each. We illustrate the results with simulations.
Birefringences: a challenge for both theory and experiment
Authors: A. Rizzo
Venue: Proceedings of the international conference on Computational methods in sciences and engineering (2003)

The phenomenon of birefringence, the anisotropy of the refractive index induced in light when it impinges on matter subject to static, generally spatially inhomogeneous, electric and/or magnetic induction fields, will be discussed. It will be shown how the subject presents a challenge for theory, computation and experiment.
HERESY: a hybrid approach to automatic schematic generation
Authors: Tzi-cker Chiueh
Venue: Proceedings of the conference on European design automation (1991)

An automatic schematic generation system called HERESEY is presented, which represents a well-engineered combination of algorithmic and rule-based approaches. Equipped with a set of carefully-chosen evaluation criteria, HERSEY is able to generate high-quality, reasonably general classes of schematic diagrams in an efficient way. A novel levelization algorithm that can detect and resolve arbitrary cyclic structures of a circuit is described. An example schematic generated by HERESY, together with its computational efficiency is also presented.
Optimal QoS Sampling Frequency Assignment for Real-Time Wireless Sensor Networks
Authors: Xue Liu, Qixin Wang, Lui Sha, Wenbo He
Venue: Proceedings of the 24th IEEE International Real-Time Systems Symposium (2003)

How to allocate computing and communication resourcesin a way that mazimizes the effectiveness of controland signal processing has been an important area ofresearch.The characteristic of a multi-hop Real-TimeWireless Sensor Network raises new challenges.First,the constraints are more complicated and a new solutionmethod is needed.Second, we need a distribution solutionto achieve scalability.This paper presents solutions toboth of the new challenges.The first solution to the optimalfrequency allocation is a centralized solution that canhandle the more general form of constraints as comparedwith prior research.The second solution is a distributedversion for large networks using a pricing scheme.It iscapable of incremental adjustment when utility functionschange.
Case studies for teaching usability engineering
Authors: Mary Beth Rosson, John M. Carroll, Con M. Rodi
Venue: Proceedings of the 35th SIGCSE technical symposium on Computer science education (2004)

A challenge in teaching usability engineering is providing appropriate hands-on project experience. Students need projects that are realistic enough to address meaningful issues, but manageable within one semester. We describe our use of online case studies to motivate and model course projects in usability engineering. The cases illustrate scenario-based usability methods, and are accessed via a custom browser. We summarize the content and organization of the case studies, several case-based learning activities, and students' reactions to the activities. We conclude with a discussion of future directions for case studies in HCI education.
An audio stream classification and optimal segmentation for multimedia applications
Authors: Konstantin Biatov, Joachim Koehler
Venue: Proceedings of the eleventh ACM international conference on Multimedia (2003)

In this paper we investigate on-line zero-crossing based audio stream segmentation and classification into speech and other segments. We consider such segments as applause, noise of the auditorium, and silence. We demonstrate that the features extracted from zero-crossing are stable and valid to be used for speech and other signal discrimination and classification and don't require large amount of data for the training. We describe the optimal segmentation of unlimited audio signals using results of the frames classification. We demonstrate that using optimal segmentation is better than using traditional sliding window technique.
.NET and XML
Authors: Niel M. Bornstein
Venue:  (2003)

.NET & XML provides an in-depth, concentrated tutorial for intermediate to advanced-level developers. Additionally, it includes a complete reference to the XML-related namespaces within the .NET Framework. XML is an extremely flexible technology, and Microsoft has implemented most of the tools programmers need to use it very extensively. .NET & XML aims to help you understand the intersection between the two technologies for maximum effectiveness.
Rough Neural Network of Variable Precision
Authors: Hongjian Liu, Hongya Tuo, Yuncai Liu
Venue: Neural Processing Letters (2004)

In this paper, a new method is described to construct rough neural networks. On the base of rough set model, we present a method to develop rough neural network of variable precision and train it using Levenberg&ndash;Marquart algorithm. The method is particularly attractive because it combines the advantages of both rough logic networks and neural networks. In our system, weak generalization in rough sets theory and complexity in neural network are avoided while anti-jamming performance is highly improved and the network structure is also simplified. In experiments, the network is applied to classification of remote sensing images. The results show that our method is more effective and successful than application of rough sets and neural network separately.
THRED: a two-handed design system
Authors: Chris D. Shaw, Mark Green
Venue: Multimedia Systems (1997)

This paper describes a computer-aided design system for sketching free-form polygonal surfaces such as terrains and other natural objects. The user manipulates two 3D position and orientation trackers with three buttons, one for each hand. Each hand has a distinct role to play, with the dominant hand being responsible for picking and manipulation, and the less dominant hand being responsible for context setting of various kinds. The less dominant hand holds the workpiece, sets which refinement level that can be picked by the dominant hand, sets the constraint mode and the reshape operator, and generally acts as a counterpoint to the dominant hand. In this paper, the architecture of the system is outlined, the interaction techniques are presented, and a simple surface is shown.
Using data mining techniques on Web access logs to dynamically improve hypertext structure
Authors: F. Masseglia, P. Poncelet, M. Teisseire
Venue: ACM SIGWEB Newsletter (1999)

With the growing popularity of the World Wide Web (Web), large volumes of data such as user address or URL requested are gathered automatically by Web servers and collected in access log files. Discovering relationships and global patterns that exist in such files can provide significant and useful information for performance enhancement, restructuring a Web site for increased effectiveness, and customer targeting in electronic commerce. In this paper, we propose an integrated system (WebTool) for applying data mining techniques such as association rules or sequential patterns on access log files. Once interesting patterns are discovered, we illustrate how they can be used to customize the server hypertext organization dynamically.
Numerical linear algebra for reconstruction inverse problems
Authors: Abdeljalil Nachaoui
Venue: Journal of Computational and Applied Mathematics (2004)

Our goal in this paper is to discuss various issues we have encountered in trying to find and implement efficient solvers for a boundary integral equation (BIE) formulation of an iterative method for solving a reconstruction problem. We survey some methods from numerical linear algebra, which are relevant for the solution of this class of inverse problems. We motivate the use of our constructing algorithm, discuss its implementation and mention the use of preconditioned Krylov methods.
Algorithms for geometric shortest paths along routes
Authors: David W. Hart
Venue:  (2002)

Given a set of lines or segments (called an arrangement ) lying in the plane and two points v and w lying on lines or segments, we would like to efficiently compute the shortest path from v to w traveling paths constrained to follow given routes, such as paths on roads or wires. For all variations of this problem, the fastest known algorithm took &Theta;( n2) time in the worst case. We describe new algorithms for several variations of this problem. First, we look at arrangements consisting segments having only two different orientations, for example, vertical and horizontal. We describe an algorithm that finds the shortest path in O(n1.5 log n) time and O(n 1.5) space. Next, we look at an arrangement of lines in which many lines are parallel, so there are n lines but only k line orientations. We describe an algorithm that finds the shortest path in O(n + k 2) time. We also prove a theorem that applies to general line arrangements, and we show that this theorem lets one considerably simplify the structure of arrangements in computation of shortest paths. Then, we look at a problem posed by Jeff Erickson, where the arrangement consists of two intersecting pencils of lines, forming a grid of quadrilaterals, and one wants to find a shortest path in this grid. We prove that there are only two choices that could be the shortest path. We apply the methods used in solving Erickson's problem to further simply shortest path computation in a line arrangement. We show that a subset of the lines, which intersect to form only a regular grid of quadrilaterals plus a convex boundary, contains the shortest path. Computing this subset of lines is quite simple, taking O( n log n) time, and computing the shortest path is also quite simple. For practical problems, this algorithm, though not asymptotically faster in the worst case, is likely to be considerably faster and is much easier to implement than the previously known algorithm.
Models of integration in decision support systems
Authors: Bożena Śmiałkowska
Venue: Artificial intelligence and security in computing systems (2003)

This article presents an overall characteristics of methods aiming at integration of enterprise's management information systems and decision support systems. The above overview has provided the base for demonstration of Author's own method ensuring higher degree information availability in decision process and management. The method presented is based on virtual data warehouse concept with a database of decision modelling methods and database of models.
Screening of Hot Electron Effect During Plasma Processing
Authors: P. Srinivasan, B. Vootukuru, D. Misra
Venue: Proceedings of the 17th International Conference on VLSI Design (2004)

CMOS devices are subjected to high-field electroninjection during plasma processing. This workinvestigates the screening of hot carrier stressdegradation in an n-channel MOSFET when the devicewas exposed to plasma processing. Devices with variousantenna ratios were subjected to current stress (both gateinjection and substrate injection) while the source anddrain terminals were reverse biased by a screeningpotential followed by hot carrier stress. It was observedthat screening of the drain edge was effective for bothgate injection and substrate injection at differentscreening potentials. For higher antenna ratio devices,the hot carrier screening potential is reduced due to pre-existingoxide traps. The hot carrier lifetime is directlyrelated to interface state density (Dit), measured bycharge pumping method. These results suggest that hotelectron degradation could be severe or mild for devicesaffected by plasma damage depending on their exposureto the level of screening potential.
VisionWand: interaction techniques for large displays using a passive wand tracked in 3D
Authors: Xiang Cao, Ravin Balakrishnan
Venue: Proceedings of the 16th annual ACM symposium on User interface software and technology (2003)

A passive wand tracked in 3D using computer vision techniques is explored as a new input mechanism for interacting with large displays. We demonstrate a variety of interaction techniques that exploit the affordances of the wand, resulting in an effective interface for large scale interaction. The lack of any buttons or other electronics on the wand presents a challenge that we address by developing a set of postures and gestures to track state and enable command input. We also describe the use of multiple wands, and posit designs for more complex wands in the future.
Wanted: CS1 students. no experience required
Authors: Phil Ventura, Bina Ramamurthy
Venue: ACM SIGCSE Bulletin (2004)

This paper reports research on the effect of prior programming experience on success in an objects-first CS1. In an objects-first, approach students are taught from the very beginning to think in terms of objects and the fundamentals of object-oriented programming, encapsulation, inheritance, and polymorphism. These concepts are introduced before traditional selection and iterative constructs. The finding that students with prior programming experience do not do better than those without such experience flies in the face of conventional wisdom.
Organization, strategy and business value of electronic commerce: the importance of complementarities
Authors: Ada Scupola
Venue: Managing e-commerce and mobile computing technologies (2003)

Many corporations are reluctant to adopt electronic commerce due to uncertainty in its profitability and business value. This chapter introduces a business value complementarity model of electronic commerce. The model relates high level performance measures, such as business value, first to intermediate performance measures, such as value chain and company strategy, and then to the e-business performance drivers as business processes and complementary technologies. The model argues that complementarities among the different activities of the value chain, corresponding business processes and supporting technologies should be explored to reach a better fit among strategy, business model and technology investments when entering the electronic commerce field. The exploration of such complementarities should lead to investments in electronic commerce systems that best support the company strategy, thus minimizing failures. From a practical point of view, managers could use this framework as a methodology to increase the business value of electronic commerce to a corporation.
BROADEN: an Efficient Collision-Free MAC Protocol for Ad Hoc Wireless Networks
Authors: Tiantong You, Chi-Hsiang Yeh, Hossam Hassanein
Venue: Proceedings of the 28th Annual IEEE International Conference on Local Computer Networks (2003)

In this paper, we present a new collision free MACprotocol - multi-channel Binary-countdown-carrier-sense /Request-to-send (RTS) / Object-to-send (OTS) / Agree-to-send(ATS) / Disagree-to-send (DTS) / Ensure-to-send (ETS)/ Neaten-to-send (NTS) (BROADEN) for ad hoc wirelessnetworks that can achieve 100% collision free performance.Furthermore, it can totally solve the "exposed terminal","hidden terminal", and "moving terminal" problems. It willalso decrease the bandwidth consumed per transmitted datapacket and thus improve the network's performance indecreasing the average delay of packet sending, droppingdiscard ratio, and increase the network's throughputsignificantly. Finally, the scheme can enable differentpackets with different priorities access the media accordingto their priority level and thus gain their desired QoS.
Exploring decisions' influence on life-cycle performance to aid &ldquo;design for Multi-X&rdquo;
Authors: Jonathan C. Borg, Xiu-Tian Yan, Neal P. Juster
Venue: Artificial Intelligence for Engineering Design, Analysis and Manufacturing (2000)

The problem addressed in this paper is that design decisions can have a propagation effect spanning multiple life-phases influencing life-cycle metrics such as cost, time, and quality. It introduces a computational framework of a &ldquo;Knowledge of life-cycle Consequences (KC) approach&rdquo; aimed at allowing designers to foresee and explore effectively unintended, solution specific life-cycle consequences (LCCs) during solution synthesis. The paper presents a phenomena model describing how LCCs are generated from two fundamentally different conditions: noninteracting and interacting synthesis decision commitments. Based on this understanding, the KC approach framework has been developed and implemented as a Knowledge-Intensive CAD (KICAD) tool named FORESEE. The framework consists of three frames: an artefact life modelling frame, an operational frame, and an LCC knowledge modelling frame. This paper focuses on the knowledge modelling frame, composed basically of synthesis elements, consequence inference knowledge, and consequence action knowledge. To evaluate the influence of design decision consequences on artefact life-phases, cost, time and quality performance measures are used within the frame. Using these metrics, the life-cycle implications of a decision can be instantly updated and fully appreciated. An evaluation of the approach was carried out by applying FORESEE to thermoplastic component design. The results provide a degree of evidence that the approach integrates the activity of component design synthesis with the activity of foreseeing artefact life issues including fluctuations in life-cycle metrics. This makes the approach fundamentally different from the conventional approach in which first a candidate design solution is generated and then, at a penalty of extra time, an analysis of the solution for conflicts with artefact life issues is carried out. The framework thus provides a significant step towards the realization of a &ldquo;Design Synthesis for Multi-X&rdquo; approach to component design, although further work is required to exploit practically its utilization.
HTTPExplorer: exploring the hypertext transfer protocol
Authors: Volker Turau
Venue: Proceedings of the 8th annual conference on Innovation and technology in computer science education (2003)

This paper presents HTTPExplorer, an interactive tool to explore the Hypertext Transfer Protocol. The intention is to use the tool in a course on web-based applications to support the learning of HTTP, the most significant protocol used on the internet today. A web-based user-interface allows students to contact any HTTP-Server connected to the internet, to issue a request and to make the data flow between a client and the server completely visible. The tool can be used by novices to get first experience with HTTP and by advanced users to experiment with more complex features. We also report about some initial experience gained in the usage of HTTPExplorer in a real course.
A Robust Criterion for the Modified Gram-Schmidt Algorithm with Selective Reorthogonalization
Authors: Luc Giraud, Julien Langou
Venue: SIAM Journal on Scientific Computing (2003)

A new criterion for selective reorthogonalization in the modified Gram--Schmidt algorithm is proposed. We study its behavior in the presence of rounding errors. We give some counterexample matrices which prove that the standard criteria might fail. Through numerical experiments, we illustrate that our new criterion seems to be suitable also for the classical Gram--Schmidt algorithm with selective reorthogonalization.
Cosynthesis of multiprocessor architectures with high availability
Authors: S. Chakraverty
Venue: Proceedings of the 17th International Conference on VLSI Design (2004)

The co-synthesis of hardware-software systemsfor distributed and/or embedded applications hasbeen studied extensively in the recent past, in combinationwith various qualitative objectives.However, the issuesrelated to design exploration for gracefully degradingsystems with the specific objective of achieving the desiredlevels of availability need to be addressed systematically.Inthis paper, we propose a cosynthesis mechansim for generatinggracefully degrading multiprocessor architectureswhich fulfill the dual objectives of achieving real-time performanceas well as ensuring high levels of system availabilityas defined by the user's availability expectationsunder different states of functionality.A rule-based modelfor incorporating the user's availability requirements andevaluating the system availability is coupled with a stochasticscheduling technique and a genetic algorithm (GA) tooptimize the resource selections, task allocations and taskschedules.Results show that it is possible to obtain a rangeof near-optimal solutions, offering tradeoffs between performanceand availability benefits at different costs.
Ontologies Improve Text Document Clustering
Authors: Andreas Hotho, Steffen Staab, Gerd Stumme
Venue: Proceedings of the Third IEEE International Conference on Data Mining (2003)

Text document clustering plays an important role in providingintuitive navigation and browsing mechanisms by organizinglarge sets of documents into a small number ofmeaningful clusters. The bag of words representation usedfor these clustering methods is often unsatisfactory as it ignoresrelationships between important terms that do not co-occurliterally. In order to deal with the problem, we integratecore ontologies as background knowledge into theprocess of clustering text documents. Our experimentalevaluations compare clustering techniques based on pre-categorizationsof texts from Reuters newsfeeds and on asmaller domain of an eLearning course about Java. In theexperiments, improvements of results by background knowledgecompared to a baseline without background knowledgecan be shown in many interesting combinations.
The impact of inadequacies in the treatment of organizational issues on information systems development projects
Authors: Neil F. Doherty, Malcolm King, Omar Al-Mushayt
Venue: Information and Management (2003)

It has often been argued that systems' failure may result from inadequacies in the treatment of organizational issues, but there is little consensus on what is meant by the term inadequate treatment and how it influences systems success. To test several theoretically plausible hypotheses, a questionnaire was mailed to senior information system (IS) executives and 344 valid responses were received. The results of a statistical analysis indicate that higher levels of systems' success are associated with treating a wide range of organizational issues throughout the development process and ensuring that members of the user community are actively involved.