ppxscal/embedding_network huggingface dataset:
Blind cancellation of intersymbol interference in decision feedback equalizers
Authors: S. Marcos, S. Cherif, M. Jaidane
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1995. on International Conference - Volume 02 (1995)

High speed data transmission over bandlimited and/or dispersive channels require equalization to remove the intersymbol interference (ISI) between the successive transmitted data. This paper presents the cancellation of intersymbol interferences (ISI) as a criterion for the blind adaptation of decision feedback equalizers (DFE). We show that this criterion is an alternative to the decision directed (DD) algorithm. This paper also proposes to replace the hard limiter in the decision device of the DFE by a soft decision implemented by a hyperbolic tangent function in order to escape from local minima during the initialization of the blind algorithms. As the theoretical investigation of these criteria and algorithms is difficult, we analyse some simple examples to illustrate the interest of the proposed solutions.
Auditory&ndash;Motor Interaction Revealed by fMRI: Speech, Music, and Working Memory in Area Spt
Authors: Gregory Hickok, Bradley Buchsbaum, Colin Humphries, Tugan Muftuler
Venue: Journal of Cognitive Neuroscience (2003)

The concept of auditory-motor interaction pervades speech science research, yet the cortical systems supporting this interface have not been elucidated. Drawing on experimental designs used in recent work in sensory-motor integration in the cortical visual system, we used fMRI in an effort to identify human auditory regions with both sensory and motor response properties, analogous to single-unit responses in known visuomotor integration areas. The sensory phase of the task involved listening to speech (nonsense sentences) or music (novel piano melodies); the "motor" phase of the task involved covert rehearsal/humming of the auditory stimuli. A small set of areas in the superior temporal and temporal-parietal cortex responded both during the listening phase and the rehearsal/humming phase. A left lateralized region in the posterior Sylvian fissure at the parietal-temporal boundary, area Spt, showed particularly robust responses to both phases of the task. Frontal areas also showed combined auditory + rehearsal responsivity consistent with the claim that the posterior activations are part of a larger auditory-motor integration circuit. We hypothesize that this circuit plays an important role in speech development as part of the network that enables acoustic-phonetic input to guide the acquisition of language-specific articulatory-phonetic gestures; this circuit may play a role in analogous musical abilities. In the adult, this system continues to support aspects of speech production, and, we suggest, supports verbal working memory.
Accurate 24-hour-ahead Load Forecasting Using Similar Hourly Loads
Authors: Fang Liu, Qiang Song, Raymond D. Findlay
Venue: Proceedings of the International Conference on Computational Inteligence for Modelling Control and Automation and International Conference on Intelligent Agents Web Technologies and International Commerce (2006)

Most conventional methods require weather conditions for accurate load forecasting. This paper presents the results of 24-hour-ahead load forecasting without involving weather variables. A novel method based on hourly load deviation is proposed to search similar hourly loads as the input of neural network. Levenberg-Marquardt method is used to train a multilayered feed-forward neural network and genetic algorithm is applied to optimize the weights of the trained neural network. The study is performed on the actual electric demands of Ontario, Canada in the year 2005. The 24-hour-ahead forecasting results have high accuracy with the maximum MAPE (mean absolute percentage error) below 1.2% and the prediction errors less than 10%.
Patent Claims Revisited: Examiners and Trolls
Authors: Philip G. Emma
Venue: IEEE Micro (2006)

In this column, the author revisits the writing of claims, and demonstrate two other styles of writing them. In one style, he shows how to write a more narrow and focused claim. In the other style, he shows how to write claims that are beyond broad--claims that can be written prior to actually inventing anything.
Find the Best to Share
Authors: Mingwei Yuan, Ping Jiang, Jian Wu
Venue: Proceedings of the 2006 IEEE Asia-Pacific Conference on Services Computing (2006)

In a virtual enterprise, how to find the best expert to share their experience and information is an important way to improve work efficiency. Semantic matching provides a basic technique to solve this problem. In this paper, semantic matching is measured by a semantic attractive force model, which is based on a domain ontology, and semantic distance computation is a core problem in semantic matching. The depth of ontology tree is considered when computing semantic distance then an agent could account semantic attractive force of optional information and chooses the best matching information to share with each other.
Using parallel and distributed computing to increase the capability of selection procedures
Authors: E. Jack Chen
Venue: Proceedings of the 37th conference on Winter simulation (2005)

We present a framework for deploying selection procedures in a parallel and distributed environment to identify the stochastic systems with optimal expected response when the number of alternatives is large. The goal is to speed up the process of identifying a good design with a specified probability. We present a sequential selection procedure and discuss the validity of dividing the entire set of alternative designs into several groups that can be processed in a parallel and distributed fashion. The surviving designs from each group are then processed subsequently. An experimental evaluation demonstrates the validity and efficiency of the procedure.
A simulation-based architecture for supporting strategic and tactical decisions in the apron of Rome-Fiumicino Airport
Authors: Giuseppe Confessore, Giacomo Liotta, Rosario Grieco
Venue: Proceedings of the 37th conference on Winter simulation (2005)

In this paper we describe an architecture for the evaluation and optimization of aircraft ground movements in apron taxiways. The paper aims at providing an effective methodology for supporting the decision-makers involved in both the apron design and management phases. The purpose deriving from the utilization of the proposed approach consists in obtaining substantial improvements in the level of service with a reduction in congestion and ground delays within airports while considering safety aspects like aircraft separation. The methodology relies on a modular architecture. A simulation-based architecture, in which an optimization module is included, has been developed; an information feedback between simulation and optimization modules is enabled. The validation has been performed through the data of the apron of Rome-Fiumicino Airport. The computational results show a reduction in aircraft flowtime and a relevant decrease in aircraft ground flows. Interesting issues related to strategic modification of system configuration are presented.
A novel approach for estimating multi-user interference in impulse radio UWB networks: the pulse collision model
Authors: Guerino Giancola, Maria-Gabriella Di Benedetto
Venue: Signal Processing (2006)

Modeling multi-User Interference (MUI) is crucial in the design of wireless networks. In the case of Impulse Radio (IR)- Ultra Wide Band (UWB) networks, most of the adopted models are inspired by the legacy of the reference literature on spread spectrum communications, and do not address specific features for IR systems, where spectrum spreading is basically obtained by the radiation of very short time-limited pulses. The problem of conceiving a specific model for MUI in IR-UWB networks is addressed in this paper. The reference scenario consists of multiple asynchronous users transmitting IR-UWB signals using Pulse Position Modulation (PPM) in combination with Time Hopping (TH) coding. We provide a novel analytical expression for the average BER based on the observation that interference in IR is provoked by collisions occurring between pulses belonging to different transmissions. The proposed method requires specification of a similar set of system parameters as Gaussian-based approaches, but shows improved accuracy in estimating BER.
Creating a lulu book cover with pixel
Authors: Donald Emmack
Venue: Linux Journal (2007)

Pixel makes a Lyx book pixel perfect.
Quantum error correction for continuously detected errors
Authors: C. Ahn, H. M. Wiseman
Venue: Proceedings of the 2003 International Conference on Physics and Control - Volume 3 (2003)

We show that quantum feedback control can be used as a quantum error correction process for errors induced by weak continuous measurement. In particular, when the error model is restricted to one, perfectly measured, error channel per physical qubit, quantum feedback can act to perfectly protect a stabilizer codespace. Using the stabilizer formalism we derive an explicit scheme, involving feedback and an additional constant Hamiltonian, to protect art (n-1)-qubit logical state encoded in n physical qubits. This works for both Poisson (jump) and white-noise (diffusion) measurement processes. As an example, we show that detected-spontaneous emission error correction with a driving Hamiltonian can greatly reduce the amount of redundancy required to protect a state from that which has been previously postulated.
Multimedia Information and Mobile-Learning
Authors: Duc Phuong Nguyen, Martin Guggisberg, Helmar Burkhart
Venue: Proceedings of the Eighth IEEE International Symposium on Multimedia (2006)

The number of applications that use mobile devices in learning activities is increasing. The limitations of mobile devices such as small screen and inconvenient input facilities can be reduced by using multimedia contents. For example, students can submit questions by taking pictures of their notes; field trip experiences can be shared by video taken from mobile phones, and students can access long text information via voice instead of using SMS that allows only 160 characters per message. However, the use of multimedia information poses a new challenge for system developers: how can the students search on multimedia information? In this paper, we introduce a mobile-learning system that addresses this issue by applying several techniques such as Automatic Speech Recognition (ASR), Optical Character Recognition (OCR), and Text to Speech (TTS). The system is based on the CoMobile framework, our open source software framework for collaborative work using mobile devices.
Towards a Model-driven Approach to Develop Applications based on Physical Active Objects
Authors: Luciano Baresi, Paolo Beretta, Roberto Fraccapani, Carlo Ghezzi, Filippo Pacifici
Venue: Proceedings of the XIII Asia Pacific Software Engineering Conference (2006)

The increasing diffusion of ubiquitous communication infrastructures and physical active objects -like sensors and smart tags- is motivating the integration of these devices into advanced distributed systems. The novelty of these technologies has imposed a -code and fix- approach; only a few methodologies have been developed to address the integration of heterogeneous technologies to provide the user with sophisticated and flexible abstractions of real world objects. To this end, the paper proposes the first results of a model-driven approach for the development of applications based on heterogeneous physical active objects. We propose a metamodel and a framework for automatic code generation based on Jini. The approach is exemplified on a simple case study in the domain of advanced logistics.
Power distribution law in a doubly fed induction machine
Authors: Séjir Khojet El Khil, Ilhem Slama-Belkhodja, Maria Pietrzak-David, Bernard de Fornel
Venue: Mathematics and Computers in Simulation (2006)

The paper deals with a Doubly Fed Induction Machine (DFIM). It presents a study of an active power distribution law between stator and rotor sides. The DFIM is supplied by two voltages PWM inverters in stator and rotor. The power distribution law imposes a relation between rotoric and statoric pulsations. Due to this relation, a new variation structure of the DFIM speed control is presented. The four quadrants working are considered. Simulation results under Matlab-Simulink illustrate the performances of the power distribution law.
A Study on Fuzzy Aggregation Operator in Multicriteria Decision Systems
Authors: LI Ai-Ping, Jia Yan, WU Quan-Yuan
Venue: Proceedings of the 2006 International Conference on Hybrid Information Technology - Volume 01 (2006)

During the development of multicriteria decision systems, the aggregation fuzzy information sources should be considered. Aggregation operators are the key technique that solve this problem. By assign 0.5 to the generalized triangular norm identy, the harmonic triangular norm operators and strict harmonic triangular norm operators is defined. The properties of the aggregation operators is discussed. We prove the continuous harmonic triangular norm operator does not exist. The operators when the information sources have weights are also given. Four type detail (strict) harmonic triangular norm operators are given. Finally, two measures associated with the operators are defined, one is marginal measure and the other is sensitive measure. Based on the measure, the relationships of those operators and classical operators are evaluated and compared. The result shows that the operators offer a new method to aggregation of fuzzy information sources in fuzzy environments.
The Role of High Spatial Frequencies in Hemispheric Processing of Categorical and Coordinate Spatial Relations
Authors: Matia Okubo, Chikashi Michimata
Venue: Journal of Cognitive Neuroscience (2004)

Right-handed participants performed categorical and coordinate spatial relation tasks on stimuli presented either to the left visual field-right hemisphere (LVF-RH) or to the right visual field-left hemisphere (RVF-LH). The stimuli were either unfiltered or low-pass filtered (i.e., devoid of high spatial frequency content). Consistent with previous studies, the unfiltered condition produced a significant RVF-LH advantage for the categorical task and an LVF-RH advantage for the coordinate task. Low-pass filtering eliminated this Task &times; Visual Field interaction; thus, the RVF-LH advantage disappeared for the categorical task. The present results suggest that processing of high spatial frequency contributes to the left hemispheric advantage for categorical spatial processing.
Applying cross layer techniques to the design of medium access control (mac) protocols for emerging wireless networks
Authors: Suresh Singh
Venue:  (2005)

The medium access control (MAC) protocol is the most important component of any wireless network. Recently, two emerging wireless technologies: Smart antennas equipped ad hoc wireless networks and low power and low cost mission oriented wireless sensor networks have evolved. The first emerging wireless technology would enable high data rate applications such as video streaming, mobile computing, etc. The second emerging wireless technology would facilitate long term sensing applications such as seismic monitoring, habitant sensing, etc. Thus, we need a high throughput MAC protocol in the former case. An energy-efficient MAC protocol, which increases the network lifetime, is suitable in the latter case. Smart antennas have certain advantages over omidirectional and directional antennas. Smart antennas can focus transmission energy towards a specific angular direction. Smart antennas can also track the user via direction of arrival algorithms. Furthermore, Smart antennas can boost SINR by means of nulling. Using Smart antennas in an ad hoc wireless network, we investigate how the throughput and delay can be improved? We use cross layer feedback between the link layer and the physical layer to develop high performance Smart MAC protocols. We evaluate Smart MAC protocols using both analysis and simulations, where we demonstrate the enormous benefits of using Smart MAC protocols. We also studied the impact of number of antenna elements on the performance of Smart MAC protocols. Heterogeneous sensor networks, where some sensor nodes have enhanced energy or communication capabilities, will be a reality in the near future. We propose cross layer feedback mechanisms to develop a resource-aware heterogeneous sensor MAC (H-MAC) protocol. Using analysis and simulations, we evaluate the performance of H-MAC in networks of different sizes and densities. Our results are encouraging, and show that H-MAC significantly prolongs the network lifetime and improves the QoS (Quality of Service) of a sensing application. Our contribution to the wireless research community is in terms of analysis, simulations, and cross layer feedback mechanisms, that resulted in new MAC protocols for emerging wireless technologies.
Asymptotics of the orthogonal polynomials for the Szegö class with a polynomial weight
Authors: S. Denisov, S. Kupin
Venue: Journal of Approximation Theory (2006)

Let p be a trigonometric polynomial, non-negative on the unit circle T. We say that a measure σ on T belongs to the polynomial Szegö class, if dσ(eiθ) = σac'(eiθ)dθ + dσs(eiθ) σs is singular, and ∫02π p(eiθ) log σac'(eiθ) dθ > - ∞.For the associated orthogonal polynomials {φn}, we obtain pointwise asymptotics inside the unit disc D. Then we show that these asymptotics hold in L2-sense on the unit circle. As a corollary, we get an existence of certain modified wave operators.
Pull systems with advance demand information
Authors: Ananth Krishnamurthy, David Claudio
Venue: Proceedings of the 37th conference on Winter simulation (2005)

This paper investigates the benefits of integrating advance demand information (ADI) with pull-kanban type production and inventory control systems (PICS). Since efficient analytical models for performance evaluation studies of these systems are unavailable, we use simulation experiments for the study. In particular, we investigate the impact of several PICS design parameters such as kanban card limits, target finished goods inventory levels, amount of demand information available, and the quality of ADI on performance measures such as system throughput, inventory holding costs and customer service levels. Our study shows that in many situations, integrating ADI with pull systems provides opportunities for efficiencies that might be significantly greater that that available using pull systems alone. Further more, we show that the performance of systems operating under pull-type PICS with ADI could be fairly robust to the quality of information being shared.
ONTODELLA -- A Projection and Linking Service for Semantic Web Applications
Authors: Kim Viljanen, Teppo Kansala, Eero Hyvonen, Eetu Makela
Venue: Proceedings of the 17th International Conference on Database and Expert Systems Applications (2006)

Content in semantic web portals is often projected along application specific navigational taxonomies and linked semantically. This paper presents a logic-based method and a server ONTODELLA for these tasks. We argue that logic rules between the content layer and the application layer add flexibility and better architectural separation of content and functionality. The system has been implemented and applied succesfully in several semantic portals.
A Flexible Ontology Reasoning Architecture for the Semantic Web
Authors: Jeff Z. Pan
Venue: IEEE Transactions on Knowledge and Data Engineering (2007)

Knowledge-based systems in the Semantic Web era can make use of the power of the Semantic Web languages and technologies, in particular those related to ontologies. Recent research has shown that user-defined data types are very useful for Semantic Web and ontology applications. The W3C Semantic Web Best Practices and Development Working Group has set up a task force to address this issue. Very recently, OWL-Eu and OWL-E, two decidable extensions of the W3C standard ontology language OWL DL, have been proposed to support customized data types and customized data type predicates, respectively. In this paper, we propose a flexible reasoning architecture for these two expressive Semantic Web ontology languages and describe our prototype implementation of the reasoning architecture, based on the well-known FaCT DL reasoner, which witnesses the two key flexibility features of our proposed architecture: 1) It allows users to define their own data types and data type predicates based on built-in ones and 2) new data type reasoners can be added into the architecture without having to change the concept reasoner.
Using system dynamics for safety and risk management in complex engineering systems
Authors: Nicolas Dulac, Nancy Leveson, David Zipkin, Stephen Friedenthal, Joel Cutcher-Gershenfeld, John Carroll, Betty Barrett
Venue: Proceedings of the 37th conference on Winter simulation (2005)

This paper presents a new approach to modeling and analyzing organizational culture, particularly safety culture. We have been experimentally applying it to the NASA manned space program as part of our goal to create a powerful new approach to risk management in complex systems. We describe the approach and give sample results of its applications to understand the factors involved in the Columbia accident and to perform a risk analysis of the new Independent Technical Authority (ITA) structure for NASA, which was introduced to improve safety-related decision-making.
A family of market-based shipment methodologies for delivery supply chain
Authors: Seog-Chan Oh, Soundar R. T. Kumara, Shang-Tae Yee, Jeffrey D. Tew
Venue: Proceedings of the 37th conference on Winter simulation (2005)

Load building is an important step to make the delivery supply chain efficient. We present a family of load makeup algorithms using market control-based strategy, named LoadMarket, in order to build efficient loads where each load consists of a certain number of finished products having destinations. LoadMarket adopts minimum spanning tree graph algorithm for generating initial endowment for Load Traders who cooperate to minimize either total travel distance or the variance with respect to the travel distances of loads through a spot market or double-sided auction market mechanism. For the simulated load shipment market, the efficiency of the LoadMarket algorithms is analyzed using simulation experiments.
Security Framework for Remote Access to Home Network
Authors: Kyo-il Chung
Venue: Proceedings of the 2006 International Conference on Hybrid Information Technology - Volume 01 (2006)

Most people say they view home network industry as one of the most important things that are central to creating high profit in the near future. Home network industry will grow in the direction that improves human life more conveniently. We think that key issues in the future home network are security and lightweight function fit to diverse home network environment. In this paper, we discuss the security infrastructure required for remote access in the home networks. I will present three distinct sections: 1) what we need for home network security; 2) security framework for remote access; 3) How to adopt the existing security technologies.
A Comment on "HEED: A Hybrid, Energy-Efficient, Distributed Clustering Approach for Ad Hoc Sensor Networks'
Authors: Chia-Hung Lin Ming-Jer Tsai
Venue: IEEE Transactions on Mobile Computing (2006)

We provide a better sufficient condition for the connectivity of cluster heads asymptotically almost surely (a.a.s.) and a tighter bound on the number of cluster heads in HEED [1].