ppxscal/embedding_network huggingface dataset:
An interface test-bed for 'Kansei' filters using the touch designer visual programming environment
Authors: Rodney Berry, Masahide Naemura, Yuichi Kobayashi, Masahiro Tada, Naomi Inoue, Yusuf Pisan, Ernest Edmonds
Venue: Proceedings of the 7th Australasian User interface conference - Volume 50 (2006)

In the context of a larger project dealing with kansei analysis of movement, we present a basic method for applying real-time filters to human motion capture data in order to modify the perceived emotional affect of the movement. By employing a commercial realtime 3D package, we have been able to quickly prototype some interfaces to an as yet non-existent system. Filters are represented as physical objects whose proximity to an animated dancing human figure determine how much they modify the movement.
Discrete-time, discrete-frequency time-frequency representations
Authors: M. S. Richman, T. W. Parks, R. G. Shenoy
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1995. on International Conference - Volume 02 (1995)

A discrete-time, discrete-frequency Wigner distribution is derived using a group-theoretic approach. It is based upon a study of the Heisenberg group generated by the integers mod N, which represents the group of discrete-time and discrete-frequency shifts. The resulting Wigner distribution satisfies several desired properties. An example demonstrates that it is a full-band time-frequency representation, and, as such, does not require special sampling techniques to suppress aliasing. It also exhibits some interesting and unexpected interference properties. The new distribution is compared with other discrete-time, discrete-frequency Wigner distributions proposed in the literature.
A cooperative multitasking model for networked sensors
Authors: Silvana Rossetto, Noemi Rodriguez
Venue: Proceedings of the 26th IEEE International ConferenceWorkshops on Distributed Computing Systems (2006)

This paper proposes a concurrency model which integrates the asynchronous and event-driven nature of networked sensors with a more familiar programming style for the developer. We argue that coroutines can provide a basis for this integration and describe some details of its implementation, which was developed as an extension to the TinyOS operating system.
Direct Measurement of Nonlinear Properties of Bipartite Quantum States
Authors: F. A. Bovino, G. Castagnoli, A. Ekert C. Moura Alves, P. Horodecki, A. V. Sergienko
Venue: Open Systems Information Dynamics (2006)

Nonlinear properties of quantum states, such as entropy or entanglement, quantify important physical resources and are frequently used in quantum information science. They are usually calculated from a full description of a quantum state, even though they depend only on a small number of parameters that specify the state. Here we extract a nonlocal and a nonlinear quantity, namely the Renyi entropy, from local measurements on two pairs of polarization entangled photons. We also introduce a "phase marking" technique which allows to select uncorrupted outcomes even with nondeterministic sources of entangled photons. We use our experimental data to demonstrate the violation of entropic inequalities. They are examples of a nonlinear entanglement witness and their power exceeds all linear tests for quantum entanglement based on all possible Bell-CHSH inequalities.
Executive "Brake Failure" following Deactivation of Human Frontal Lobe
Authors: Christopher D. Chambers, Mark A. Bellgrove, Mark G. Stokes, Tracy R. Henderson, Hugh Garavan, Ian H. Robertson, Adam P. Morris, Jason B. Mattingley
Venue: Journal of Cognitive Neuroscience (2006)

In the course of daily living, humans frequently encounter situations in which a motor activity, once initiated, becomes unnecessary or inappropriate. Under such circumstances, the ability to inhibit motor responses can be of vital importance. Although the nature of response inhibition has been studied in psychology for several decades, its neural basis remains unclear. Using transcranial magnetic stimulation, we found that temporary deactivation of the pars opercularis in the right inferior frontal gyrus selectively impairs the ability to stop an initiated action. Critically, deactivation of the same region did not affect the ability to execute responses, nor did it influence physiological arousal. These findings confirm and extend recent reports that the inferior frontal gyrus is vital for mediating response inhibition.
Exploiting dynamic and partial reconfiguration for FPGAs: toolflow, architecture and system integration
Authors: M. Hübner, J. Becker
Venue: Proceedings of the 19th annual symposium on Integrated circuits and systems design (2006)

Xilinx Virtex FPGAs offer the possibility of dynamic and partial run-time reconfiguration. This feature enables the substitution of the reconfigurable architecture within a configuration area on the chip. Beneficial here is that the architecture can be adapted to the actual demand of an application while run-time. High performance, flexibility and adaptivity of these devices raise the interest in academic research and also in industrial fields of application. This new method for designing systems isn't supported very well by tools until now. This tutorial should help designers as well as researchers in developing dynamic and partial reconfigurable systems and increase the number of area of applications exploiting this very promising methodology. As an example the design of an on-demand reconfigurable system for inner cabin automotive application will be presented.
The Neural Substrate of Orientation Working Memory
Authors: L. Cornette, P. Dupont, E. Salmon, Guy A. Orban
Venue: Journal of Cognitive Neuroscience (2001)

We have used positron emission tomography (PET) to identify the neural substrate of two major cognitive components of working memory (WM), maintenance and manipulation of a single elementary visual attribute, i.e., the orientation of a grating presented in central vision. This approach allowed us to equate difficulty across tasks and prevented subjects from using verbal strategies or vestibular cues. Maintenance of orientations involved a distributed fronto-parietal network, that is, left and right lateral superior frontal sulcus (SFSl), bilateral ventrolateral prefrontal cortex (VLPFC), bilateral precuneus, and right superior parietal lobe (SPL). A more medial superior frontal sulcus region (SFSm) was identified as being instrumental in the manipulative operation of updating orientations retained in the WM. Functional connectivity analysis revealed that orientation WM relies on a coordinated interaction between frontal and parietal regions. In general, the current findings confirm the distinction between maintenance and manipulative processes, highlight the functional heterogeneity in the prefrontal cortex (PFC), and suggest a more dynamic view of WM as a process requiring the coordinated interaction of anatomically distinct brain areas.
Array signal number detection for coherent and incoherent signals in unknown noise environments
Authors: Qiang Wu
Venue: Proceedings of the Acoustics, Speech, and Signal Processing,1994. on IEEE International Conference - Volume 04 (1994)

In array signal processing, signal number detection is a necessary step for high resolution directions of arrival (DOA) estimation. With the assumption of spatially white noise, several methods have been proposed for detecting both coherent and uncoherent signals. A new parametric signal number detector for unknown noise environments is proposed. The new detector is suitable for both coherent and uncoherent signals. 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
Collaboration and learning in immersive virtual environments
Authors: Randolph L. Jackson, William Winn
Venue: Proceedings of the 1999 conference on Computer support for collaborative learning (1999)

We are investigating collaboration and learning in immersive virtual environments. Preliminary studies of 110 sixth and ninth grade students have been conducted where students worked in pairs while investigating the concept of global warming within a fully immersive, 3-D, virtual reality based model of Seattle called Global Change World (GCW). Field research being conducted during June of 1999 is expanding on these preliminary studies by seeking to identify differences in science concept learning between solitary users, paired-peer users, and agent-guided users interacting within the GCW virtual learning environment (VLE). We have observed that most students thoroughly enjoy their experiences with GCW. It is also apparent that peer collaboration plays a significant role in regards to the level of student engagement within the VLE. Therefore, we believe that the potential for GCW to facilitate valuable collaborative learning experiences in conjunction with more traditional classroom activities is great. Our continuing research is intended to focus more closely on the impact of both peer and expert-novice collaboration on the preconceived or "naive" scientific concepts held by students. The paper that follows describes our research to date, and will be amended to include the methods and results of our research-in-progress.
Security-Oriented Service Composition and Evolution
Authors: Jun Han, Khaled M. Khan
Venue: Proceedings of the XIII Asia Pacific Software Engineering Conference (2006)

This paper introduces a framework for security-oriented software service composition and evolution. Key building blocks of the framework are a semantic model for specifying the security objectives and properties at the service and system levels, the negotiation and re-negotiation techniques for service composition and evolution, and the analysis techniques for checking the security compatibility between services and the satisfaction of system-level security goals. It focuses on developing techniques that allow system developers to design required security into service compositions with predictability and to maintain or adapt service compositions in changed security contexts.
Effects of alternate representations of evidential relations on collaborative learning discourse
Authors: Daniel D. Suthers
Venue: Proceedings of the 1999 conference on Computer support for collaborative learning (1999)

Over the past decade or so, a number of software environments have been created to support students engaged in collaborative investigations in science (e.g., Belvedere, CoVis, CSILE, SenseMaker, and WebCamile). These environments have used a variety of representations for recording information such as alternate hypotheses, empirical observations, and evidential relations (e.g., node-link graphs, structured lists, and containers). There are both empirical and theoretical reasons to believe that the expressive constraints imposed by a representation and the information (or lack of information) that a representation makes salient may have important effects on students' discourse during collaborative learning. However, to date no systematic study has been undertaken to explore possible effects. This paper outlines a research agenda to address this need; provides theoretically motivated predictions; and reports initial results from a pilot study. Students worked together in groups of two on hypertext-based "science challenge" problems. Two groups used each of free text (MS Word), matrix (Excel) or graph (Belvedere) representations of evidence, for a total of six groups. Analysis of discourse transcripts suggests that these representations have quite different effects on the extent to which students discuss evidential relations.
On the Effect of Fault Removal in Software Testing - Bayesian Reliability Estimation Approach
Authors: Hiroyuki Okamura, Hitoshi Furumura, Tadashi Dohi
Venue: Proceedings of the 17th International Symposium on Software Reliability Engineering (2006)

In this paper, we propose some reliability estimation methods in software testing. The proposed methods are based on the familiar Bayesian statistics, and can be characterized by using test outcomes in input domainmodels. It is shown that the resulting approaches are capable of estimating software reliability in the case where the detected software faults are removed. In numerical examples, we compare the proposed methods with the existing method, and investigate the effect of fault removal on the reliability estimation in software testing. We show that the proposed methods can give more accurate estimates of software reliability.
Theta Oscillations and Human Navigation: A Magnetoencephalography Study
Authors: Dráulio B. De Araújo, Oswaldo Baffa, Ronald T. Wakai
Venue: Journal of Cognitive Neuroscience (2002)

Magnetoencephalography (MEG) was used to study alpha and theta activity while subjects navigated through a computer-generated virtual reality town. The subjects were first allowed to explore the environment freely. They then had to navigate from a starting point to a destination, knowing that an obstruction would appear at one of several possible locations along the main route and force them to take a detour. Spatiotemporal analysis of the theta and alpha bands were performed (1) prior to the start of navigation, (2) from the start of navigation until the obstruction was encountered, (3) during the time subjects were contemplating a detour and were not navigating, and (4) from the resumption of navigation until the destination was reached. In all subjects, theta power was strongest during the two periods of navigation. The peak frequency of the oscillations was approximately 3.7 Hz. Control studies consisted of a motor task similar to that required for navigation, passive viewing of a tour through the same virtual reality town, and a mental concentration task. No consistent increases in theta power were seen in the MEG during any of the control tasks. The results suggest an association between theta rhythm and the performance of navigational tasks in humans.
Web Application Testing with Customized Test Requirements - An Experimental Comparison Study
Authors: Sreedevi Sampath, Sara Sprenkle, Emily Gibson, Lori Pollock
Venue: Proceedings of the 17th International Symposium on Software Reliability Engineering (2006)

Test suite reduction uses test requirement coverage to determine if the reduced test suite maintains the original suite's requirement coverage. Based on observations from our previous experimental studies on test suite reduction, we believe there is a need for customized test requirements for web applications. In this paper, we examine usagebased customized test requirements for the test suite reduction problem in web application testing. We conduct an extensive experimental study to evaluate the tradeoffs between five classes of customized requirements with respect to reduced test suite size, program coverage and fault detection effectiveness. Our results show that the reduced suites' program coverage and fault detection effectiveness increases with the context or data associated with the reduction requirement. Based on our experimental results, we provide guidance to testers on the most useful test requirement for web applications in general and provide intuition on factors testers need to consider when selecting test requirements.
Structured total least norm method for Toeplitz problems
Authors: Haesun Park, J. Ben Rosen, J. Glick
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1995. on International Conference - Volume 02 (1995)

The total least squares (TLS) method for solving an overdetermined system Ax/spl ap/b is a generalization of the least squares (LS) method, and it minimizes /spl par/[E|r]/spl par//sub F/ so that (b+r)/spl isin/Range(A+E), given A/spl isin/R/sup mxn/, with m/spl ges/n and b/spl isin/R/sup m/spl times/1/. The commonly used TLS algorithm is based on the singular value decomposition (SVD) of [A|b]. However, in applications where the matrix A has a special structure, the SVD based methods may not always be appropriate, since they do not preserve the structure. A new formulation, called the structured total least norm (STLN), and an algorithm for computing solutions have been developed. The STLN preserves any affine structure of A or [A|b], and can minimize error in the discrete L/sub p/ norm, where p=1, 2 or /spl infin/. We study the STLN method for problems in which the perturbation matrix E or [E|r] keeps the Toeplitz structure like the data matrix A or [A|b]. These structures occur in many problems such as deconvolution, transfer function modeling and linear prediction problems. In particular, the STLN methods with L/sub 1/ and L/sub 2/ norms are compared with the LS and TLS methods and shown to improve the accuracy of the solutions significantly. When there is an outlier in the data, the STLN method with L/sub 1/ norm is shown to produce solutions that are essentially not affected by the outlier.
Authoring multimedia documents through grammatical specifications
Authors: Jun Kong, Meikang Qiu, Kang Zhang
Venue: Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1 (2003)

The diversity of multimedia devices is an important feature on the Internet, which demands an executable mechanism to intelligently adjust the appearance of a document according to different viewing contexts. In order to satisfy this requirement, a graph-grammar-based approach for multimedia authoring is presented by extending context-sensitive graph grammar formalism, reserved graph grammar (RGG), with the capability of spatial specifications. Based on a parser for the RGG, a graph grammar functions as a mapping from the structure of a document to a desirable layout, and graph transformations arc automatically performed when contexts arc changed.
Two sides of the story: Visualising Products and Processes in Engineering Design
Authors: Rene Keller, Tomas L. Flanagan, Claudia M. Eckert, P. John Clarkson
Venue: Proceedings of the conference on Information Visualization (2006)

This paper describes research on the use of multiple views for modelling products and processes in the design of complex products. Single visual representations of design models only provide a limited perspective, hiding important information from the designer. Based on an industrial case study with an engine company, the utility of multiple views in analysing model data is demonstrated. The case study showed an industrial need for improved visualisation techniques, as the currently used method - Gantt charts of design tasks - did not provide enough information in order to properly steer the design process and predict process behaviour. This approach of using a variety of different visualisation techniques together with improved techniques for modelling and simulating design processes provides insight into the hidden dependencies between the design artefact (the product) and its design process.
A layered approach to automated electrical safety analysis in automotive environments
Authors: C. J. Price, N. A. Snooke, S. D. Lewis
Venue: Computers in Industry (2006)

Software support for the automotive electrical design process is vital, as many of the safety analysis tasks needing to be carried out, while complex, are repetitive and time consuming. Such support is required throughout the design process, but the available commercial tools are only appropriate at specific points in the design process--providing either an early rough analysis or a late but detailed analysis. This paper describes how the capability and utility of safety analysis software can be improved through separating the types of knowledge used into layers. This allows the maximum amount of information to be reused as the design evolves, and enables software tools to track the consequences of changes to the design so that the repercussions of any design change can be understood. The software capability described has profound implications for the design process. Previously, engineers performed a snapshot design safety analysis at some point in the design process, even if they had an automated design safety analysis tool to assist them. The process and tool arrangement described in this paper enables engineers to continually monitor the status of a design, noting the implications of any changes or refinements to the design.
Testing implementations of transactional memory
Authors: Chaiyasit Manovit, Sudheendra Hangal, Hassan Chafi, Austen McDonald, Christos Kozyrakis, Kunle Olukotun
Venue: Proceedings of the 15th international conference on Parallel architectures and compilation techniques (2006)

Transactional memory is an attractive design concept for scalable multiprocessors because it offers efficient lock-free synchronization and greatly simplifies parallel software. Given the subtle issues involved with concurrency and atomicity, however, it is important that transactional memory systems be carefully designed and aggressively tested to ensure their correctness. In this paper, we propose an axiomatic framework to model the formal specification of a realistic transactional memory system which may contain a mix of transactional and non-transactional operations. Using this framework and extensions to analysis algorithms originally developed for checking traditional memory consistency, we show that the widely practiced pseudo-random testing methodology can be effectively applied to transactional memory systems. Our testing methodology was successful in finding previously unknown bugs in the implementation of TCC, a transactional memory system. We study two flavors of the underlying analysis algorithm, one incomplete and the other complete, and show that the complete algorithm while being theoretically intractable is very efficient in practice.
Portraits or People? Distinct Representations of Face Identity in the Human Visual Cortex
Authors: Gilles Pourtois, Sophie Schwartz, Mohamed L. Seghier, François Lazeyras, Patrik Vuilleumier
Venue: Journal of Cognitive Neuroscience (2005)

Humans can identify individual faces under different viewpoints, even after a single encounter. We determined brain regions responsible for processing face identity across view changes after variable delays with several intervening stimuli, using event-related functional magnetic resonance imaging during a long-term repetition priming paradigm. Unfamiliar faces were presented sequentially either in a frontal or three-quarter view. Each face identity was repeated once after an unpredictable lag, with either the same or another viewpoint. Behavioral data showed significant priming in response time, irrespective of view changes. Brain imaging results revealed a reduced response in the lateral occipital and fusiform cortex with face repetition. Bilateral face-selective fusiform areas showed view-sensitive repetition effects, generalizing only from three-quarter to front-views. More medial regions in the left (but not in the right) fusiform showed repetition effects across all types of viewpoint changes. These results reveal that distinct regions within the fusiform cortex hold view-sensitive or view-invariant traces of novel faces, and that face identity is represented in a view-sensitive manner in the functionally defined face-selective areas of both hemispheres. In addition, our finding of a better generalization after exposure to a 3/4-view than to a front-view demonstrates for the first time a neural substrate in the fusiform cortex for the common recognition advantage of three-quarter faces. This pattern provides new insights into the nature of face representation in the human visual system.