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10th International Conference on Information Integration and Web-based Applications and Services, iiWAS 2008

作者： Ikeda, Sohei Nagamine, Takakazu Kamada, Tomio Dept. of Computer Science and System Eng. Grad. School of Eng. Kobe University 1-1 Rokkodai-cho Nada-Ku Kobe Japan

ISBN: (纸本)9781605583495

This paper proposes a mashup framework for creating flexible mashup applications in which the user can selectively browse through mashup items. Our framework provides a data management eng.ne for on-demand data generation, and GUI components called widgets that can be used to browse through mashed-up data selectively. The application developer has to only prepare a mashup relation specifying the web service combinations and widget configurations specifying how to display the mashed-up data. On the basis of these configurations, widgets monitor user interactions and requests data from the data management eng.ne that processes the demand-driven creation of mashed-up data. To enable selective browsing, a table widget, for instance, allows selection of columns to be displayed, provides a limited view with scroll bars, and filtering facilities. Our framework also offers a mechanism for widget coordination where a widget can change the display target according to states or events of other widgets. We introduce a sample application for tour planning using five cooperative widgets, and discuss the usability and performance advantages of our framework. Copyright 2008 ACM.

关键词： Web services

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Fore-aft oxygen storage control

Fore-aft oxygen storage control

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2002 American Control Conference

作者： Fieng., Giovanni Cook, Jeffrey A. Grizzle, J.W. Computer and System Eng. Dept. Universita di Napoli Federico II Naples Italy

This paper describes model-based, active control of an aftertreatment system for a spark ignition eng.ne equipped with a three-way catalyst (TWC) and pre- and post-TWC oxygen sensors. A controller is designed to manage the oxygen storage level in the TWC in order to maximize the simultaneous conversion efficiencies of oxides of nitrogen, NOx, unburned hydrocarbons, HC, and carbon monoxide, CO. Linear exhaust gas oxygen sensors (UEGOs) are used to measure pre- and post-catalyst A/F. The pre-catalyst A/F measurement is assumed to be biased in addition to being corrupted by zero-mean noise, while the post-catalyst measurement is assumed to be only corrupted by zero-mean noise. A series controller configuration is adopted. The upstream controller provides relatively rapid response to disturbances on the basis of the pre-catalyst measurement, while the downstream controller uses an extended Kalman filter (observer) to estimate the relative oxygen level of the TWC on the basis of the pre- and post-catalyst A/F measurements. The estimated value of oxygen storage is then used to regulate the relative oxygen level of the TWC to 50%. The performance and robustness of the proposed control system in the face of noise and model uncertainty are evaluated through extensive simulations.

关键词： Control system synthesis

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Semi-automatic semantic video object extraction by active contour model

Semi-automatic semantic video object extraction by active co...

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2000 IEEE International Conference on Multimedia and Expo (ICME 2000)

作者： Lu, Z. Pearlman, W.A. Elec. Computer and System Eng. Dept. Rensselare Polytechnic Institute Troy NY 12180 United States

An algorithm to extract the semantic video object in the first frame of a video sequence is proposed. The extracted closed object contour provides an accurate video object model for automatic object extraction in the following frames. Two polygons are input by the user to specify the area in which the object boundary is located. Based on this, edges which belong to the video object of interest are selected by a local object contour model. Then an active contour model (snake) is applied to refine the closed object contour.

关键词： Feature extraction

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Hierarchical distributed control for interconnected systems

Hierarchical distributed control for interconnected systems

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13th IFAC Symposium on Large Scale Complex systems: Theory and Applications, LSS 2013

作者： Jilg, Martin Stursberg, Olaf Institute of Control and System Theory Dept. of Electrical Eng. and Computer Science University of Kassel 34121 Kassel Germany

Most approaches concerning distributed control for physically interconnected systems assume a flat controller structure, i.e. the subsystems exchange state information directly and in each timestep. In this paper, ideas from distributed control, network topology optimization and optimal control are combined in order to construct a distributed two-layer state feedback control structure. A decomposition algorithm is proposed which groups the subsystems into distinct clusters. Within each cluster, information is exchanged between the subsystems in every timestep. On the upper layer of the hierarchy, informaton is exchanged between the clusters with a lower frequency. The underlying communication topology is optimized to obtain a compromise between control performance and communication cost. This leads to reduced communication between the subsystems compared to existing hierarchical approaches. © IFAC.

关键词： Large scale systems

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Control of uncertain hybrid nonlinear systems using particle filters

Control of uncertain hybrid nonlinear systems using particle...

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4th IFAC Conference on Analysis and Design of Hybrid systems, ADHS'12

作者： Asselborn, Leonhard Jilg, Martin Stursberg, Olaf Institute of Control and System Theory Dept. of Electrical Eng. and Computer Science University of Kassel 34121 Kassel Germany

ISBN: (纸本)9783902823007

This paper proposes an optimization-based algorithm for the control of uncertain hybrid nonlinear systems. The considered system class combines the nondeterministic evolution of a discrete-time Markov process with the deterministic switching of continuous dynamics which itself contains uncertain elements. A weighted particle filter approach is used to approximate the uncertain evolution of the system by a set of deterministic runs. The desired control performance for a finite time horizon is encoded by a suitable cost function and a chance-constraint, which restricts the maximum probability for entering unsafe state sets. The optimization considers input and state constraints in addition. It is demonstrated that the resulting optimization problem can be solved by techniques of conventional mixed-integer nonlinear programming (MINLP). As an illustrative example, a path planning scenario of a ground vehicle with switching nonlinear dynamics is presented. © 2012 IFAC.

关键词： Bandpass filters

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Eu2O3-driven tailoring strategies on Al6061-Alloy for nuclear applications: A comprehensive study on structural, physical, and radiation transmission properties

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Radiation Physics and Chemistry 2025年 236卷

作者： Basgoz, Oykum Guler, Seval Hale Guler, Omer ALMisned, Ghada Baykal, Duygu Sen Kilic, G. Tekin, H.O. Metalurgical and Material Eng. Dept. Mersin University Mersin33343 Turkey Munzur University Rare Earth Elements Application and Research Center Tunceli62000 Turkey Department of Physics College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Istanbul Nisantasi University Faculty of Engineering and Architecture Mechatronics Engineering Istanbul34398 Turkey Eskisehir Osmangazi University Faculty of Science Department of Physics Eskisehir26040 Turkey Medical Diagnostic Imaging Department College of Health Sciences University of Sharjah Sharjah27272 United Arab Emirates Istinye University Faculty of Engineering and Natural Sciences Computer Engineering Department Istanbul34396 Turkey

In this study, Al6061–Eu2O3 composites were fabricated via mechanical alloying and systematically characterized using X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy to evaluate structural and compositional features. The incorporation of Eu2O3 in varying weight percentages (1–20 wt%) was confirmed by XRD, revealing phase retention and crystallite refinement, while SEM–EDS analyses indicated uniform elemental distribution at low doping and localized clustering at higher reinforcement levels. Radiation shielding properties were comprehensively assessed through mass and linear attenuation coefficients, half value layer, effective atomic number, fast neutron removal cross section, buildup factors, and photon transmission factors. The results demonstrated a strong correlation between increasing Eu2O3 content and improved shielding performance. The E20 composite exhibited a mass attenuation coefficient of 22.33 cm2/g at 0.015 MeV, over threefold higher than the base alloy, and fast neutron removal cross section improved by 22.5 % compared to Al6061 alone. Additionally, EBF and EABF values decreased significantly, confirming reduced secondary photon build-up. These findings validate the effectiveness of Eu2O3 as a reinforcement phase for tailoring Al6061 for multifunctional applications, particularly in nuclear, aerospace, and radiological environments requiring lightweight materials with superior gamma and neutron attenuation. © 2025 Elsevier Ltd

关键词： Reactor shielding

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Design and development of a real-time embedded inertial measurement unit 10

Design and development of a real-time embedded inertial meas...

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25th Annual ACM Symposium on Applied Computing, SAC 2010

作者： Facchinetti, Tullio Savioli, Alberto Goldoni, Emanuele University of Pavia Dept. of Computer Eng. and System Science 27100 - Pavia Italy University of Pavia Dept. of Electronics 27100 - Pavia Italy

ISBN: (纸本)9781605586380

Micro-Electro-Mechanical systems (MEMS) sensors are used nowadays in a wide range of applications, from robotics to entertainment. Recently, this technology has also been adopted to equip Inertial Measurement Units (IMUs) replacing traditional electro-mechanical sensors. In this work we present a low-cost embedded IMU which is based on a low-cost embedded microcontroller with limited resources in terms of computing power and memory. The developed software runs on the top of the ERIKA Enterprise real-time kernel to manage the computing tasks that perform sensor data sampling and processing. Low-cost MEMS accelerometers, gyroscopes and magnetometers provide the required data and a Kalman filter analyses raw values in real-time. Experimental results are obtained using a six degrees of freedom anthropomorphic manipulator to drive the IMU with accurate known trajectory, acceleration and rotation. Performances are evaluated both in terms of sensor fusion effectiveness and real-time execution. © 2010 ACM.

关键词： Computing power

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Comparative study of microstrip and stripline in the split reference plane of high speed digital circuit application

Comparative study of microstrip and stripline in the split r...

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IEEE Antennas and Propagation Society Symposium 2004 Digest held in Conjunction with: USNC/URSI National Radio Science Meeting

作者： Shim, Hwang-Yoon Kim, Jiseong Yook, Jong-Gwan Computer System Division Samsung Electronics Korea Republic of Dept. of Electrical Eng. Yonsei Univ. Korea Republic of

Signal integrity and EMI quality are compared between microstrip and stripline for split reference plane of multi-layer PCB. Designing high-speed digital signal as stripline proved to be a solution to minimize the effect of nonideal current return path. Simulations based on 3D-FDTD method are utilized for the analysis of practical high frequency multi-layered PCB.

关键词： Microstrip devices

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Charge-sharing-problem reduced split-path domino logic

Charge-sharing-problem reduced split-path domino logic

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Proceedings - 17th International Conference on VLSI Design, Concurrently with the 3rd International Conference on Embedded systems Design

作者： Yoon, Seok-Soo Yoon, Seok-Ryong Kim, Seon-Wook Kim, Chulwoo Integrated System and Processor Lab. Dept. of Electronics Eng. Korea University Seoul Korea Republic of Advanced Computer Systems Lab. Dept. of Electronics Eng. Korea University Seoul Korea Republic of

In this paper, we describe split-path domino (SP domino) logic which is capable of high speed due to the magnitude of the charge sharing problem being halved. SP domino logic splits the NMOS stacked transistors used for logic evaluation, in order to reduce charge sharing problem, which has become one of the most critical noise problems in VDSM technology. Furthermore, SP domino logic needs no signal ordering. Dual Vt assignment methodology for SP domino logic was also proposed, in order to provide improved performance with low power consumption overhead. Our experimental results, with several logic gates using 0.18um CMOS technology, showed that the proposed logic provides an improvement in performance of up to 17% compared to the textbook domino circuit, under the same noisy conditions. Hence, SP domino logic is a good candidate for high-speed low-voltage operation in a very noisy environment.

关键词： Logic circuits

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DCM/Diff.D: A threshold-less and dynamic decision making receiver design for improved transmission performance 9

DCM/Diff.D: A threshold-less and dynamic decision making rec...

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9th IEEE Asia-Pacific Conference on Communications, APCC 2003, in conjunction with 6th Malaysia International Conference on Communications, MICC 2003

作者： Abbas, N. Abdullah, M.K. Abas, A.F. Photonics Laboratory Computer and Communication System Eng. Dept. Facutly of Engineering Serdang Selnagor Darul EhsanUPM 43400 Malaysia

ISBN: (纸本)0780381149

The simulation results and analysis of a novel transmission technique namely double carrier modulation/differential detection are presented, we show how the differential detection technique improves the system performance significantly, we also demonstrate that this technique overcomes the problems associated with voltage threshold in conventional systems, and how it suggest the possibility to double up the conventional long distance without amplifiers with a BER of as good as 10-13 at 2.5 Gbps over 150 Km distance with 0 dBm transmit power. The new scheme also shows a much slower degradation with distance than that of conventional IM/DD system. © 2003 IEEE.

关键词： Threshold voltage

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