检索结果-内蒙古大学图书馆

IEEE Conference on Control Technology and Applications (CCTA)

作者： S. Jagannathan Embedded Systems and Networking Laboratory Department of Electrical and Computer Engineering University of Missouri Rolla Rolla MO USA

A novel real-time discrete-event admission control (AC) scheme for high-speed networks is proposed with the aim of attaining a desired quality of service (QoS) and high network utilization. The AC encapsulates an adaptive bandwidth estimation scheme, a congestion indicator, and a peak bit/cell rate (PBR/PCR) estimate from new sources. The admission controller dynamics are expressed as a discrete-event system while the bandwidth estimator design is based on Lyapunov theory and the congestion controller dynamics are given in discrete-time. The novel aspect of the proposed approach is the application of hybrid system theory to prove the performance of the proposed admission controller, stability and the development of a rigorous and repeatable design procedure. The performance of the proposed AC is evaluated using the QoS metrics, which are given in terms of service delay, packet/cell losses, and network utilization. Simulation results are presented by streaming ON/OFF and MPEG video data into the network. Results show that the proposed AC admits significantly more traffic compared to other available admission control schemes thereby guaranteeing high network utilization while maintaining the desired QoS.

关键词： Control systems High-speed networks Quality of service Admission control Bandwidth Bioreactors Discrete event systems Stability Performance loss Streaming media

来源：评论

学校读者我要写书评

暂无评论

Blind Deconvolution De-noising for Helicopter Vibration Data

Blind Deconvolution De-noising for Helicopter Vibration Data

引用

American Control Conference (ACC)

作者： Bin Zhang Taimoor Khawaja Romano Patrick George Vachtsevanos Intelligent Control Systems Laboratory School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA

Critical aircraft assets are required to be available when needed, while exhibiting attributes of reliability, robustness and high confidence under a variety of flight regimes, and maintained on the basis of their current condition rather than on the basis of scheduled maintenance practices. New and innovative technologies must be developed and implemented to address these concerns. Condition based maintenance (CBM) requires that the health of critical components/systems be monitored and diagnostics/prognostic strategies be developed to detect and identify incipient failures and predict the failing component's remaining useful life (RUL). Typically, vibration and other key indicators on-board on aircraft are severely corrupted by noise thus curtailing our ability to accurately diagnose and predict failures. This paper introduces a novel blind deconvolution de-noising scheme that employs vibration model in the frequency domain and attempts to arrive at the true vibration signal through an iterative optimization process. Performance indexes are defined and data from a helicopter are used to demonstrate the effectiveness of the proposed scheme.

关键词： Deconvolution Noise reduction Helicopters Maintenance Aircraft Robustness Condition monitoring Frequency domain analysis Signal processing Performance analysis

来源：评论

学校读者我要写书评

暂无评论

Resonance based contactless energy transfer

Resonance based contactless energy transfer

引用

Power Electronic and Drive systems and Technologies Conference (PEDSTC)

作者： Saeed Hasanzadeh Sadegh Vaez-Zadeh Advanced Motion Systems Research Laboratory and Center of Excellence on Applied Electromagnetic Systems School of Electrical and Computer Engineering University of Tehran Tehran Iran

In this paper, efficiency analysis and design of contactless electric energy transmission systems using inductive method are elaborated. Large leakage inductances of the systems are to be compensated to achieve resonance conditions for maximum efficiency in energy transfer from a launch side to a receiving side where compensating circuits are utilized in both sides. Considering the circuit models of a contactless electrical energy transmission system, the effects of different system parameters including the compensating capacitors are analyzed for a specified frequency range and coupling factor. An algorithm is proposed to determine the optimal compensating capacitors and system resonance frequency to achieve high efficiency.

关键词： Frequency modulation computer aided software engineering

来源：评论

学校读者我要写书评

暂无评论

The effects of ionization in wind turbine grounding modeling

The effects of ionization in wind turbine grounding modeling

引用

Mediterranean Electrotechnical Conference (MELECON)

作者： J.M. Prousalidis M.P. Philippakou N.D. Hatziargyriou B.C. Papadias Electric Energy Systems Laboratory Electrical & Computer Engineering Department National and Technical University of Athens Athens Greece

In this paper, the effect of soil ionization due to lightning strike on wind turbine grounding electrodes is investigated. The developed ionization model is validated and subsequently used to investigate the influence of several parameters on the phenomenon studied, namely, the soil type, the electrode type and the crest value of the impulse current. All simulations are performed using EMTP computer program.

关键词： Ionization Wind turbines Grounding Electrodes Lightning Electric resistance Conductivity Protection Soil measurements Shape

来源：评论

学校读者我要写书评

暂无评论

Market-Oriented Cloud Computing: Vision, Hype, and Reality for Delivering IT Services as Computing Utilities

Market-Oriented Cloud Computing: Vision, Hype, and Reality f...

引用

IEEE International Conference on High Performance Computing and Communications (HPCC)

作者： Rajkumar Buyya Chee Shin Yeo Srikumar Venugopal Grid Computing and Distributed Systems (GRIDS) Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

This keynote paper: presents a 21 st century vision of computing; identifies various computing paradigms promising to deliver the vision of computing utilities; defines Cloud computing and provides the architecture for creating market-oriented Clouds by leveraging technologies such as VMs; provides thoughts on market-based resource management strategies that encompass both customer-driven service management and computational risk management to sustain SLA-oriented resource allocation; presents some representative Cloud platforms especially those developed in industries along with our current work towards realising market-oriented resource allocation of Clouds by leveraging the 3rd generation Aneka enterprise Grid technology; reveals our early thoughts on interconnecting Clouds for dynamically creating an atmospheric computing environment along with pointers to future community research; and concludes with the need for convergence of competing IT paradigms for delivering our 21 st century vision.

关键词： Meteorology Cloud computing Resource management Grid computing Quality of service Industries Monitoring

来源：评论

学校读者我要写书评

暂无评论

Memorization in overparameterized autoencoders

arXiv

引用

arXiv 2018年

作者： Radhakrishnan, Adityanarayanan Yang, Karren Belkin, Mikhail Uhler, Caroline Laboratory for Information & Decision Systems Institute for Data Systems and Society Massachusetts Institute of Technology Department of Computer Science and Engineering Ohio State University

The ability of deep neural networks to generalize well in the overparameterized regime has become a subject of significant research interest. We show that overparameterized autoencoders exhibit memorization, a form of inductive bias that constrains the functions learned through the optimization process to concentrate around the training examples, although the network could in principle represent a much larger function class. In particular, we prove that single-layer fully-connected autoencoders project data onto the (nonlinear) span of the training examples. In addition, we show that deep fully-connected autoencoders learn a map that is locally contractive at the training examples, and hence iterating the autoencoder results in convergence to the training examples. Finally, we prove that depth is necessary and provide empirical evidence that it is also sufficient for memorization in convolutional autoencoders. Understanding this inductive bias may shed light on the generalization properties of overparametrized deep neural networks that are currently unexplained by classical statistical theory. Copyright © 2018, The Authors. All rights reserved.

关键词： Deep neural networks

来源：评论

学校读者我要写书评

暂无评论

Developing Distributed Reasoning-Based Applications for the Semantic Web

Developing Distributed Reasoning-Based Applications for the ...

引用

International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Dimitrios Koutsomitropoulos Georgia Solomou Tzanetos Pomonis Panagiotis Aggelopoulos Theodore Papatheodorou High Performance Information Systems Laboratory Computer Engineering and Informatics Dpt. University of Patras Patras Greece

ISBN: (纸本)9781424467013;9780769540191

In order for Semantic Web applications to be successful a key component should be their ability to take advantage of rich content descriptions in meaningful ways. Reasoning consists a key part in this process and it consequently appears at the core of the Semantic Web architecture stack. From a practical point of view however, it is not always clear how applications may take advantage of the knowledge discovery capabilities that reasoning can offer to the Semantic Web. In this paper we present and survey current methods that can be used to integrate inference-based services with such applications. We argue that an important decision is to have reasoning tasks logically and physically distributed. To this end, we discuss relevant protocols and languages such as DIG and SPARQL and give an overview of our Knowledge Discovery Interface. Further, we describe the lessons-learned from remotely invoking reasoning services through the OWL API.

关键词： Semantic Web Application software OWL Protocols Service oriented architecture Ontologies Conferences Information systems Laboratories computer networks

来源：评论

学校读者我要写书评

暂无评论

A dc-bus voltage regulation for parallel wind-based synchronous generators

A dc-bus voltage regulation for parallel wind-based synchron...

引用

Annual Conference of Industrial Electronics Society

作者： Mahmoud M. N. Amin B. Mirafzal Osama Mohammed Energy Systems Research Laboratory Department of Electrical and Computer Engineering Florida International University Miami FL USA

In this paper, a performance analysis of a dc-bus voltage regulation technique for parallel wind-based synchronous generators is presented. This technique is developed based on the voltage oriented control (VOC) algorithm for PWM converters. The proposed technique provides economic utilization of the wind generator by insuring unity power factor operation under different possible conditions. This is achieved using a PWM-based controlled rectifier (converter). Furthermore, this gives the ability to interconnect multi wind converter units sharing one dc-bus and the ability to compensate voltage disturbance due to loading effect on the dc-bus. Simulation results for different disturbance conditions are carried out to validate this proposed control algorithm. The developed technique is also implemented in a laboratory setup which includes two synchronous generators (250 W, 2.2 kW), each driven by a variable speed prime mover (VSPM) to emulate a wind turbine behavior, two 3-phase PWM based converters, three-phase line inductors connected between wind generators and converters, variable resistive DC-load, and a digital signal processor (DSP TMS320F240). The experimental results confirm the validity of the presented technique.

关键词： Converters Voltage control Generators Wind turbines Reactive power Phase locked loops Rectifiers

来源：评论

学校读者我要写书评

暂无评论

Real-time reconfigurable control system design using on-line neural estimator

Real-time reconfigurable control system design using on-line...

引用

International Joint Conference on Neural Networks (IJCNN)

作者： Liang-Wei Ho G.G. Yen Intelligent Systems and Control Laboratory School of Electrical and Computer Engineering Oklahoma State University Stillwater OK USA

The growing demand in system reliability and survivability under failures has urged ever-increasing research effort on the development of fault diagnosis and accommodation. In this paper, the on-line fault tolerant control problem for dynamic systems under unanticipated failures is investigated from a realistic point of view without any specific assumption on type of system dynamical structure or failure scenarios. The sufficient condition for system on-line stability under catastrophic failures has been derived using the discrete-time Lyapunov stability theory. Based upon the existing control theory and the modern intelligent techniques, an on-line fault accommodation control strategy is proposed to deal with the desired trajectory-tracking problems for systems suffering from various unknown and unanticipated catastrophic failures. To investigate the feasibility of the developed technique for unanticipated fault accommodation in real hardware under the real-time environment, an on-line fault tolerant control test bed has been constructed to validate the proposed technology. Both on-line simulations and the real-time experiment show encouraging results and promising futures of on-line real-time fault tolerant control based solely upon insufficient information of the system dynamics and the failure modes.

关键词： Real time systems Control systems Fault tolerant systems Reliability Fault diagnosis Sufficient conditions Stability Lyapunov method Control theory Hardware

来源：评论

学校读者我要写书评

暂无评论

Real-time print localization on pharmaceutical capsules for automatic visual inspection

Real-time print localization on pharmaceutical capsules for ...

引用

IEEE International Conference on Industrial Technology (ICIT)

作者： Žiga Špiclin Boštjan Likar Franjo Permiš Faculty of Electrical Engineering Laboratory of Imaging Technologies Ljubljana Slovenia Sensum Computer Vision Systems Ljubljana Slovenia

The goal of this work was to enable real-time visual inspection of printed pharmaceutical capsules, as the information printed on the capsules is crucial for unambiguous identification of active substances and dosages contained in the capsule. We propose a template matching technique to localize and detect print on capsules. For this purpose, large image distortions related to capsule shape were first eliminated by estimating the principal axes of the capsule and transforming the capsule image to cylindrical coordinates. Then, a fast and efficient implementation of normalized cross correlation was used to localize the printed image or text for which the template was selected a priori. A dedicated database of printed capsules was used to assess and confirm the feasibility of the proposed method in terms of accuracy (

关键词： Pharmaceuticals Inspection Shape Image analysis Sorting Image color analysis Real time systems Image databases Pixel Sampling methods

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：