ppxscal/embedding_network huggingface dataset:
A variational approach to path planning for hyper-redundant manipulators
Authors: Bhaskar Dasgupta, Akhil Gupta, Ekta Singla
Venue: Robotics and Autonomous Systems (2009)

Motion planning for hyper-redundant manipulators in a complicated and cluttered workspace is a challenging problem. Many of the path planning algorithms, based on cell decomposition or potential field, fail due to the high dimensionality and complex nature of the C-space. Probabilistic roadmap methods (PRM) which have been proven to be successful in high dimensional C-spaces suffer from the drawback of generating paths which involve a lot of redundant motion. In this paper, we propose a path optimizing method to improve a given path in terms of path length and the safety against the collisions, using a variational approach. The capability of variational calculus to optimize a path is demonstrated on a variety of examples. The approach succeeds in providing a good quality path even in high dimensional C-spaces.
Reduction of Bootstrapped Switch Area Consumption Using Pre-Charge Phase
Authors: Retdian A. Nicodimus, Shigetaka Takagi, Nobuo Fujii
Venue: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (2008)

This paper discusses the input range limitation problem in a track-and-hold circuit and the compensation method using a bootstrapped switch. A bootstrapped switch with an additional control circuit is proposed to compensate charge loss in conventional bootstrapped switch circuit. Simulation results using 0.18-μm CMOS process parameters show that the proposed circuit reduces the bootstrap capacitance down to 25% for the conventional circuit.
Vibracion Cajon: a drumming interface that awakes a shared sense of identity
Authors: Junichi Kanebako, Atsuhito Sekiguchi
Venue: Proceedings of the 2008 International Conference on Advances in Computer Entertainment Technology (2008)

This research is an attempt to develop a drumming interface that awakes a shared sense of identity in a musical performance session even for non-musicians. In this paper, "Shared Identity" refers to the way in which players are aware of each other, and feel a sense of belonging with other players. In this paper, we describe the concept and approach about drumming interface "Vibracion Cajon".
Indexing density models for incremental learning and anytime classification on data streams
Authors: Thomas Seidl, Ira Assent, Philipp Kranen, Ralph Krieger, Jennifer Herrmann
Venue: Proceedings of the 12th International Conference on Extending Database Technology: Advances in Database Technology (2009)

Classification of streaming data faces three basic challenges: it has to deal with huge amounts of data, the varying time between two stream data items must be used best possible (anytime classification) and additional training data must be incrementally learned (anytime learning) for applying the classifier consistently to fast data streams. In this work, we propose a novel index-based technique that can handle all three of the above challenges using the established Bayes classifier on effective kernel density estimators. Our novel Bayes tree automatically generates (adapted efficiently to the individual object to be classified) a hierarchy of mixture densities that represent kernel density estimators at successively coarser levels. Our probability density queries together with novel classification improvement strategies provide the necessary information for very effective classification at any point of interruption. Moreover, we propose a novel evaluation method for anytime classification using Poisson streams and demonstrate the anytime learning performance of the Bayes tree.
Enhancing remote participation in live auctions: an 'intelligent' gavel
Authors: Christian Heath, Paul Luff, Dirk Vom Lehn, Jun Yamashita, Hideaki Kuzuoka
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

Auctions, both traditional and electronic, are a pervasive social organisation for the valuation and exchange of goods and services. Despite the long-standing interest in integrating internet contributions into the more traditional auction such initiatives have remained problematic. We consider the organization of interaction of sales of fine art and antiques and develop a prototype 'intelligent' gavel system that is designed to enhance remote participation and ease the flexible ways in which internet contributions are legitimately integrated into live auctions. We present the findings of a quasi-naturalistic experiment involving the use of the system by auctioneers and its consequences for the general development of technologies to support internet participation in live co-located events.
The use of computers for instruction and administration in elementary and secondary education
Authors: Sylvia Charp
Venue: Proceedings of the May 6-10, 1974, national computer conference and exposition (1974)

The use of the computer in education, especially in elementary and secondary education, has already made an impact. The number of school systems using computers for both administrative and instructional applications is growing. Questions, however, are still being raised, which require sharing of experiences by educators. When and for what applications can the same hardware be used for both administrative and instructional purposes, when and is it economical to buy time from time-sharing company, or when and how best to use stand-alone minicomputers require careful study. The objectives and needs of the individual school user or school system must be stated and then specifications given to the manufacturers so that these objectives can be met as manufacturers become more and more aware of the many uses of computers, especially in instruction, hardware may be built which satisfy the particular needs of education. The problem of training for administrators and teachers cannot be overlooked. Administrators and teachers need to know how to use effectively all the additional information made available. Also, the changing role of the teacher as the computer becomes the dispenser of information, needs to be understood. Manufacturers, educators, regional laboratories, private companies must all work together in this endeavor. 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
Using the RePart Simulator to Analyze Different Reputation-Based Partnership Formation Strategies within a Marketplace Scenario
Authors: Priscilla Avegliano, Jaime Simão Sichman
Venue: Trust in Agent Societies: 11th International Workshop, TRUST 2008, Estoril, Portugal, May 12 -13, 2008. Revised Selected and Invited Papers (2008)

Despite all research that has been carried out in the last years concerning different reputation models for autonomous agents, an essential aspect concerning the usage of this models was not sufficiently stressed: how this concept may effectively help an autonomous agent in order to better evolve in an open MAS scenario. From an agent perspective, there are some important questions regarding this issue: (1) how to choose a partner, taking into account its reputation and the costs associated with the partnership? (2) is it worth to manipulate information? (3) how to act in a society guided by the concept of reputation in order to achieve better results? In this paper, we present and discuss some results obtained from a reputation-based partnership formation simulator called RePart, using a simplified consumer/enterprise market scenario as a target domain.
AA-RR: working with authentication and authorization infrastructures
Authors: Candido Rodriguez, Ajay Daryanani, Diego R. Lopez, Jose M. Macias
Venue: Proceedings of the 2006 International Conference on Privacy, Security and Trust: Bridge the Gap Between PST Technologies and Business Services (2006)

The implementation of an Authentication and Authorization Federated Infrastructure (AAFI) is a solution to the demand for inter-organizational access to networked services, which has been constantly growing over the years. But the integration of these services into the infrastructure is not a trivial process, normally having a high cost for the organization, which has to update applications for working properly with the federated infrastructure. To help in this integration, the authors present Authentication and Authorization Requester Responder (AA-RR), a tool conceived to help in the validation of the interoperability of a certain Authentication and Authorization (AA) component with other(s).
An Explicit Method for Solving the Transient Integral Equation of Thin Arbitrary Conducting Wire Antenna
Authors: Simin Li, Weiping Cao
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 01 (2009)

Basing on integral equation in time domain (IETD) hybridization with finite difference method, a new method is applied to solve the radiation problem of the thin curve wire antenna. The results are compared with those from moment method (MoM) in frequency domain. The comparison illustrates a good agreement between results from both methods, so it can be efficiently applied to solve the radiation and scattering problem of the thin curve wire conductor in time domain.
Usability testing of augmented/mixed reality systems
Authors: Mark Billinghurst
Venue: ACM SIGGRAPH ASIA 2008 courses (2008)

For many decades researchers have been trying to blend Reality and Virtual Reality in interesting ways to create intuitive computer interfaces. For example, in the area of Tangible Interfaces real objects are used as interface widgets [Ishii 97], researchers in Augmented Reality (AR) overlay three-dimensional virtual imagery onto the real world [Feiner 93], while in Virtual Reality (VR) interfaces the real world is replaced entirely with a computer-generated environment.
Fabrication and Testing of a TMMF S2030 Based Micro Fluidic Device for Single Cell Analysis
Authors: V. R. S. S. Mokkapati, L. Zhang, R. Hanfoug, J. Mollinger, J. Bastemeijer, A. Bossche
Venue: Proceedings of the 2009 Third International Conference on Quantum, Nano and Micro Technologies (2009)

Current paper describes the fabrication and testing of a Lab-on-a-chip device using TMMF S2030 dry film resist for single cell analysis. The device typically consists of a bigger channel (20µm deep), 3 smaller channels (2 µm deep) with embedded reservoir in between and a detector towards the downstream.Whole device has been fabricated on a standard glass wafer. Electrode configuration is the notable factor in which pre-sorter electrodes were introduced to bring far-off particles to the trapping range. Dielectrophores is technique will be used to trap a single particle/cell with in the reservoir. Bigger channels were fabricated in TMMF and that of the smaller channels in silicon dioxide. Testing of the channels as successfully done using carboxylate modified fluorescent polystyrene beads (wavelength 605 nm).Currently we are working towards trapping a tumorcell and study the viability and detection mechanisms.
Automatic instrumentation of embedded software for high level hardware/software co-simulation
Authors: Aimen Bouchhima, Patrice Gerin, Frédéric Pétrot
Venue: Proceedings of the 2009 Asia and South Pacific Design Automation Conference (2009)

We propose an automatic instrumentation method for embedded software annotation to enable performance modeling in high level hardware/software co-simulation environments. The proposed "cross-annotation" technique consists of extending a retargetable compiler infrastructure to allow the automatic instrumentation of embedded software at the basic block level. Thus, target and annotated native binaries are guaranteed to have isomorphic control flow graphs (CFG). The proposed method takes into account the processor-specific optimizations at the compiler level and proves to be accurate with low simulation overhead.
A new characterization of group action-based perfect nonlinearity
Authors: Laurent Poinsot
Venue: Discrete Applied Mathematics (2009)

The left-regular multiplication is explicitly embedded in the notion of perfect nonlinearity. But there exist many other group actions. By replacing translations by another group action the new concept of group action-based perfect nonlinearity has been introduced. In this paper we show that this generalized concept of nonlinearity is actually equivalent to a new bentness notion that deals with functions defined on a finite Abelian group G that acts on a finite set X and with values in the finite-dimensional vector space of complex-valued functions defined on X.
Networked Haptic Cooperation Using Remote Dynamic Proxies
Authors: Zhi Li, Daniela Constantinescu
Venue: Proceedings of the 2009 Second International Conferences on Advances in Computer-Human Interactions (2009)

Networked haptic cooperation entails direct interaction among users as well as joint manipulation of virtual objects. To increase the realism of both types of interactions, this paper introduces remote dynamic proxies. Remote dynamic proxies are second order dynamic representations of users at the remote peer sites. They are generated according to dynamics laws and are controlled by the user whom they represent through a virtual coupler. Hence, they move in a physically intuitive manner and do not suffer from position discontinuities due to network packet transmission limitations. The remote dynamic proxies are integrated into a distributed control architecture for networked haptic cooperation. An experimental comparison of the new controller to two recently proposed controllers demonstrates smoother rendering of contact between users, as well as stable cooperation for larger network delays.
Content-based Structuring of Video Information
Venue: Proceedings of the 1996 International Conference on Multimedia Computing and Systems (1996)

For flexible handling of video images, it is important to structure video information according to its content. We are focusing on linguistic descriptions of such video contents that can be extracted during the process of video production. This paper proposes a component-based scene description model for computerizing linguistic descriptions written by the directors and a method for extracting a content-based hierarchical structure for video sequences based on this model. 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
Shifting to a higher gear in a natural language system
Authors: Bozena Henisz Thompson, Frederick B. Thompson
Venue: Proceedings of the May 4-7, 1981, national computer conference (1981)

We have completed the development of the REL System, a system for communicating with the computer in natural language concerning a relational database. We have been using that system in a series of experiments On how people actually do communicate in solving an intellectual task. These experiments, together with our general experience with REL, and related work elsewhere, have led us to the specification arid development of a new system, the POL (Problem Oriented Language) System. POL is an evolutionary extension of REL, preserving what has worked, and extending and adding new capabilities to meet observed needs. These improvements include more responsive diagnostics, handling of sentence fragments, inter knowledge base communications, and new facilities for building and extending the knowledge bases of users. This paper introduces POL.
Discrete variable methods for delay-differential equations with threshold-type delays
Authors: Z. Jackiewicz, B. Zubik-Kowal
Venue: Journal of Computational and Applied Mathematics (2009)

We study numerical solution of systems of delay-differential equations in which the delay function, which depends on the unknown solution, is defined implicitly by the threshold condition. We study discrete variable numerical methods for these problems and present error analysis. The global error is composed of the error of solving the differential systems, the error from the threshold conditions and the errors in delay arguments. Our theoretical analysis is confirmed by numerical experiments on threshold problems from the theory of epidemics and from population dynamics.
Algorithms for Computing Diffuse Reflection Paths in Polygons
Authors: Subir Kumar Ghosh, Partha Pratim Goswami, Anil Maheshwari, Subhas Chandra Nandy, Sudebkumar Prasant Pal, Swami Sarvattomananda
Venue: Proceedings of the 3rd International Workshop on Algorithms and Computation (2009)

Let s be a point source of light inside a polygon P of n vertices. A polygonal path from s to some point t inside P is called a diffuse reflection path if the turning points of the path lie on polygonal edges of P. We present three different algorithms for computing diffuse reflection paths from s to t inside P. For constructing such a path, the first algorithm uses a greedy method, the second algorithm uses a transformation of a minimum link path, and the third algorithm uses the edge-edge visibility graph of P. The first two algorithms are for polygons without holes, and they run in O(n + k logn) time, where k denotes the number of reflections in the path. The third algorithm is for both polygons with or without holes, and it runs in O(n 2) time. The number of reflections in the path produced by this algorithm can be at most 3 times that of an optimal diffuse reflection path. The problem of computing a diffuse reflection path between two points inside a polygon has not been considered in the past.
Random linear-quadratic mathematical models: Computing explicit solutions and applications
Authors: J. C. Cortés, L. Jódar, L. Villafuerte
Venue: Mathematics and Computers in Simulation (2009)

This paper deals with the study of linear random population models and with a random logistic model (where parameters are random variables). Assuming appropriate conditions, the stochastic processes solutions are obtained under closed form using mean square calculus. Expectation and variance expressions for the stochastic processes solutions are given and illustrative examples are included.
An Adaptive Fault-tolerant Scheme for Wireless Sensor Networks
Authors: Chen Yan-ming, Xu Yong-jun, Wang Qiu-guang, Xie Lei
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 02 (2009)

We devise an adaptive fault-tolerant scheme based on the Exponentially Weighted Moving Average (EWMA) which can provide fault tolerant in sensor networks and balance between traffic overhead and transmission failure. We use the multipath routing to transmit packets, and according to wireless network environments we adaptively change the required number of paths for transmission. So it can achieve the optimization that takes fault tolerance into account with the optimal required number of paths. The source node uses Forward Error Correction (FEC) erasure coding to encode each packet into multiple fragments and transmits the fragments to sink over multipath which are node disjoint. The sink node can use erasure coding to reconstruct the original data if it receives enough fragments. In the simulation we compare our scheme with the previous study, it increases the reliability of packet delivery in wireless sensor network, while decreases the total network traffic.
A refined Jensen's inequality in Hilbert spaces and empirical approximations
Authors: S. Leorato
Venue: Journal of Multivariate Analysis (2009)

Let f:X->R be a convex mapping and X a Hilbert space. In this paper we prove the following refinement of Jensen's inequality: E(f|X@?A)>=E(f|X@?B) for every A,B such that E(X|X@?A)=E(X|X@?B) and B@?A. Expectations of Hilbert-space-valued random elements are defined by means of the Pettis integrals. Our result generalizes a result of [S. Karlin, A. Novikoff, Generalized convex inequalities, Pacific J. Math. 13 (1963) 1251-1279], who derived it for X=R. The inverse implication is also true if P is an absolutely continuous probability measure. A convexity criterion based on the Jensen-type inequalities follows and we study its asymptotic accuracy when the empirical distribution function based on an n-dimensional sample approximates the unknown distribution function. Some statistical applications are addressed, such as nonparametric estimation and testing for convex regression functions or other functionals.
Digital design of a key synchronization system on a FPGA for a network use
Authors: Panagiotis Margaronis, Lambrinoudakis Kostantinos, Gritzalis Stefanos, Antonidakis Emmanouil, Rigakis Iraklis
Venue: Proceedings of the 6th conference on Microelectronics, nanoelectronics, optoelectronics (2007)

This paper presents the design of a programmable digital integrated circuitry for the use on a Personal Computer (PC) communication card for the synchronization of a key generator between two different destinations. The implementation is based on Peripheral Component Interconnectional (PCI) Architecture. A Hardware PC cryptography card (which is called LAM) has been designed using a Field Programmable Gate Array (FPGA) chip in combination with the digital part (physical layer) of the PCI Bus. LAM card includes a key synchronization system. The main objective of this paper is to provide the reader with a deep insight of the theory and design of a digital cryptographic circuitry, which was designed for a FPGA chip with the use of Very (High-Speed Integrated Circuit) Hardware Description Language (VHDL) for a PCI card. A demonstration of the LAM synchronization circuitry will be presented.
Evaluation and Modeling of User Performance for Pointing and Scrolling Tasks on Handheld Devices Using Tilt Sensor
Authors: Hamed H. Sad, Franck Poirier
Venue: Proceedings of the 2009 Second International Conferences on Advances in Computer-Human Interactions (2009)

We experimentally test the effectiveness and reliability of the accelerometer-based tilt sensor as an interaction device for pointing and scrolling tasks on handheld devices. The touch screen and stylus based interfaces on these devices requires using two hands: one for holding the device and the other for driving the stylus. In our experiment, the participants use only one hand to interact with the same interfaces. In addition to freeing one hand, using the tilt sensor doesn't hide a part of the device's tiny screen. Two different interfaces are used in the experiment: one for testing pointing and targeting without scrolling and the other is for testing them with scrolling. Using the experiment results we developed a model for the prediction of the execution time for both tasks.
Least Distortion Halftone Image Data Hiding Watermarking by Optimizing an Iterative Linear Gain Control Model
Authors: Weina Jiang, A. T. Ho, H. Treharne
Venue: Proceedings of the 6th International Workshop on Digital Watermarking (2008)

In this paper, a least distortion data hiding approach is proposed for halftone image watermarking. The impacts of distortion and tonality problems in halftoning are analyzed. An iterative linear gain model is developed to optimize perceptual quality of watermarking halftone images. An optimum linear gain for data hiding error diffusion is derived and mapped into a standard linear gain model, with the tonality evaluated using the average power spectral density. Our experiments show that the proposed linear gain model can achieve an improvement of between 6.5% to 12% as compared to Fu and Au's data hiding error diffusion method using the weighted signal-to-noise ratio(WSNR).