检索结果-内蒙古大学图书馆

Swarm Intelligence Algorithm Inspired by Route Choice Behavior

Journal of Bionic engineering 2016年第4期13卷 669-678页

作者： Daxin Tian Junjie Hu Zhengguo Sheng Yunpeng Wang Jianming Ma Jian Wang Beijing Advanced Innovation Center for Big Data and Brain Computing Beihang University Beijing 100191 China School of Transportation Science and Engineering Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control Beihang University Beijing 1 O0191 China Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies Nanjing 210096 China Department of Engineering and Design University of Sussex Brighton BN1 9RH UK The Texas Department of Transportation Austin TX78750 USA College of Computer Science and Technology Jilin University Changchun 130012 China

Travelers＇ route choice behavior, a dynamical learning process based on their own experience, traffic information, and influence of others, is a type of cooperation optimization and a constant day-to-day evolutionary process. Travelers adjust their route choices to choose the best route, minimizing travel time and distance, or maximizing expressway use. Because route choice behavior is based on human beings, the most intelligent animals in the world, this swarm behavior is expected to in- corporate more intelligence. Unlike existing research in route choice behavior, the influence of other travelers is considered for updating route choices on account of the reality, which makes the route choice behavior from individual to swarm. Anew swarm intelligence algorithm inspired by travelers＇ route choice behavior for solving mathematical optimization problems is introduced in this paper. A comparison of the results of experiments with those of the classical global Particle Swarm Optimization （PSO） algorithm demonstrates the efficacy of the Route Choice Behavior Algorithm （RCBA）. The novel algorithm provides a new approach to solving complex problems and new avenues for the study of route choice behavior.

关键词： swarm intelligence route choice behavior particle swarm optimization mathematical optimization

来源：评论

学校读者我要写书评

暂无评论

Vertical impedance measurements of concrete bridge deck cover condition without a direct electrical connection to the reinforcing steel

引用

AIP Conference Proceedings 2017年第1期1806卷

作者： Brian A. Mazzeo Jared Baxter Jeffrey Barton W. Spencer Guthrie 1Department of Electrical and Computer Engineering Brigham Young University Provo UT 84602 USA 2Department of Civil and Environmental Engineering Brigham Young University Provo UT 84602 USA

Vertical impedance measurements provide significant quantitative information about the ability of concrete cover to slow the penetration of chloride ions that can corrode steel reinforcement in a bridge deck. The primary limitations preventing the widespread adoption of vertical impedance for assessment of concrete bridge decks are (1) the necessity to have a direct electrical connection to the embedded steel reinforcement and (2) the low speeds of data acquisition. This work presents solutions to both limitations. A method using a large-area electrode as a reference electrode for vertical impedance testing is validated using both simulations and measurements in the field.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Structural dependence of piezoelectric signal in cancellous bone at an ultrasound frequency

引用

Proceedings of Meetings on Acoustics 2017年第1期32卷

作者： Atsushi Hosokawa 1Department of Electrical and Computer Engineering National Institute of Technology Akashi College Akashi Hyogo 674-8501 JAPAN hosokawa@akashi.ac.jp

Experimental observations of piezoelectric signals generated in bovine cancellous bone by an ultrasound wave were performed using two “piezoelectric cells (PE-cells)” of the bone, which could correspond to ultrasound receivers. In the PE-cells, air-saturated cancellous bone specimens with low (0.68 ± 0.02) and high (0.78 ± 0.02) porosities were used. An ultrasound burst wave at 1 MHz was transmitted toward each PE-cell, and the piezoelectric signals generated in the cancellous bone specimens were observed in nine regions of interest (ROIs). The piezoelectric sensitivities were derived with the structural parameters of cancellous bone: porosity, mean intercept lengths (MILs) of the trabecular elements in three orthogonal directions, and MILs of the pore spaces. The piezoelectric sensitivity tended to decrease with porosity. Moreover, the piezoelectric sensitivity in the whole porosity range was moderately correlated with both MILs, but the sensitivities in the low and high porosity ranges were correlated with only MILs of the pore spaces and only MILs of the trabecular elements, respectively. This was considered to be because the types (shapes) of the main trabecular elements in the low and high-porosity cancellous bone specimens were different. Thus, the piezoelectric sensitivity in cancellous bone could be affected by the trabecular structure.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Stability analysis of 2D Roesser systems via vector Lyapunov functions

引用

IFAC-PapersOnLine 2017年第1期50卷 4126-4131页

作者： Pakshin P. Emelianova J. Gałkowski K. Rogers E. Arzamas Polytechnic Institute of R.E. Alekseev Nizhny Novgorod State Technical University Lobachevsky State University of Nizhny Novgorod Prospekt Gagarina 23 19 Kalinina Street Nizhny Novgorod Arzamas 607227 603950 Russian Federation Arzamas Polytechnic Institute of R.E. Alekseev Nizhny Novgorod State Technical University 19 Kalinina Street Arzamas 607227 Russian Federation Institute of Control and Computation Engineering University of Zielona Góra ul. Podgórna 50 Zielona Góra 65-246 Poland Department of Electronics and Computer Science University of Southampton Southampton SO17 1BJ United Kingdom

The paper gives new results that contribute to the development of a stability theory for 2D nonlinear discrete and differential systems described by a state-space model of the Roesser form using an extension of Lyapunov's method. One of the main difficulties in using such an approach is that the full derivative or its discrete counterpart along the trajectories cannot be obtained without explicitly finding the solution of the system under consideration. This has led to the use of a vector Lyapunov function and its divergence or its discrete counterpart along the system trajectories. Using this approach, new conditions for asymptotic stability are derived in terms of the properties of two vector Lyapunov functions. The properties of asymptotic stability in the horizontal and vertical dynamics, respectively, are introduced and analyzed. This new properties arise naturally for repetitive processes where one of the two independent variables is defined over a finite interval. Sufficient conditions for exponential stability in terms of the properties of one vector Lyapunov function are also given as a natural follow on from the asymptotic stability analysis. © 2017

关键词： 2D systems asymptotic stability exponential stability vector Lyapunov functions

来源：评论

学校读者我要写书评

暂无评论

Pass profile exponential and asymptotic stability of nonlinear repetitive processes

引用

IFAC-PapersOnLine 2017年第1期50卷 4138-4143页

作者： Pakshin P. Emelianova J. Emelianov M. Galkowski K. Rogers E. Arzamas Polytechnic Institute of R.E. Alekseev Nizhny Novgorod State Technical University Lobachevsky State University of Nizhny Novgorod 19 Kalinina Street Prospekt Gagarina 23 Arzamas Nizhny Novgorod 607227 603950 Russian Federation Arzamas Polytechnic Institute of R.E. Alekseev Nizhny Novgorod State Technical University 19 Kalinina Street Arzamas 607227 Russian Federation Institute of Control and Computation Engineering University of Zielona Góra ul. Szafrana 2 Zielona Góra 65-516 Poland Department of Electronics and Computer Science University of Southampton Southampton SO17 1BJ United Kingdom

This paper considers discrete and differential nonlinear repetitive processes using the state-space model setting. These processes are a particular class of 2D systems that have their origins in the modeling of physical processes. Their distinguishing characteristic is that one of the two independent variables needed to describe the dynamics evolves over a finite interval and therefore they are defined over a subset of the upper-right quadrant of the 2D plane. The current stability theory for nonlinear dynamics assumes that they operate over the complete upper-right quadrant and this property may be too strong for physical applications, particulary in terms of control law design. With applications in mind, the contribution of this paper is the use of vector Lyapunov functions to characterize a new properties termed pass profile exponential stability and pass profile asymptotic stability. © 2017

关键词： Nonlinear repetitive processes pass profile asymptotic stability pass profile exponential stability vector Lyapunov functions

来源：评论

学校读者我要写书评

暂无评论

Corrigendum: Dielectric cross-shaped-resonator-based metasurface for vortex beam generation at mid-IR and THz wavelengths (Nanophotonics (2019) 8:7 (1263–1270) DOI: 10.1515/nanoph-2019-0112)

引用

Nanophotonics 2019年

作者： Dharmavarapu, Raghu Izumi, Ken-ichi Katayama, Ikufumi Ng, Soon Hock Vongsvivut, Jitraporn Tobin, Mark J. Kuchmizhak, Aleksandr Nishijima, Yoshiaki Bhattacharya, Shanti Juodkazis, Saulius Centre for NEMS and Nanophotonics (CNNP) Department of Electrical Engineering Indian Institute of Technology Madras Chennai 600036 India Centre for Micro-Photonics Faculty of Science Engineering and Technology Swinburne University of Technology Hawthorn VIC 3122 Australia Melbourne Centre for Nanofabrication ANFF 151 Wellington Road Clayton VIC 3168 Australia Physics Department Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Infrared Microspectroscopy Beamline Australian Synchrotron Clayton VIC 3168 Australia Institute of Automation and Control Processes Far Eastern Branch Russian Academy of Sciences Vladivostok 690041 Russia Far Eastern Federal University Vladivostok 690090 Russia Department of Electrical and Computer Engineering Graduate School of Engineering Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Institute of Advanced Sciences Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Tokyo Tech World Research Hub Initiative (WRHI) School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan

There was a mistake in the grant number used in the recently published paper (DOI: https://***/10.1515/ nanoph-2019-0112. Published Online: 2019-07-09). The text should read: A.K. is grateful for support via the Russian Science Foundation (grant no. 17-19-01325), and R.D. thanks the IIT Madras-Swinburne joint PhD program. © 2019 De Gruyter. All rights reserved.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A data-driven gradient algorithm for high-precision quantum control

arXiv

引用

arXiv 2017年

作者： Wu, Re-Bing Chu, Bing Owens, David H. Rabitz, Herschel Department of Automation Tsinghua University Beijing100084 China Center for Quantum Information Science and Technology BNRist Beijing100084 China School of Electronic and Computer Science University of Southampton SouthamptonSO17 1BJ United Kingdom Department of Automation Zhengzhou University Zhengzhou450001 China Department of Automatic Control and Systems Engineering University of Sheffield Mappin Street SheffieldS1 3JD United Kingdom Department of Chemistry Princeton University PrincetonNJ08544 United States

In the quest to achieve scalable quantum information processing technologies, gradient-based optimal control algorithms (e.g., GRAPE) are broadly used for implementing high-precision quantum gates, but their performance is often hindered by deterministic or random errors in the system model and the control electronics. In this paper, we show that GRAPE can be taught to be more effective by jointly learning from the design model and the experimental data obtained from process tomography. The resulting data-driven gradient optimization algorithm (d-GRAPE) can in principle correct all deterministic gate errors, with a mild efficiency loss. The d-GRAPE algorithm may become more powerful with broadband controls that involve a large number of control parameters, while other algorithms usually slow down due to the increased size of the search space. These advantages are demonstrated by simulating the implementation of a two-qubit CNOT gate. Copyright © 2017, The Authors. All rights reserved.

关键词： Random errors

来源：评论

学校读者我要写书评

暂无评论

Student modeling method integrating knowledge tracing and IRT with decay effect 2

Student modeling method integrating knowledge tracing and IR...

引用

2nd International Workshop on Educational Knowledge Management, EKM 2016

作者： Oeda, Shinichi Asai, Kouta Department of Information and Computer Engineering National Institute of Technology Kisarazu College 11-1 Kiyomidaihigashi 2-chome Kisarazu CityChiba Japan Advanced Control and Information Engineering Course National Institute of Technology Kisarazu College Japan NIFTY Corporation Human Resources Department Shinjuku Front Tower 21-1 Kita-shinjuku 2-chome Shinjuku-kuTokyo Japan

Educational data mining (EDM) involves the application of data mining, machine learning, and statistics to information generated from educational settings. Modeling students' knowledge is a fundamental part of intelligent tutoring systems. One of the most popular methods for estimating students' knowledge is knowledge tracing. It is the de-facto standard for inferring students' knowledge from performance data. The goal of this study is to estimate future student performance from massive amounts of examination results. We propose a novel method to improve the precision of student modeling using knowledge tracing with item response theory, including the decay theory of forgetting. © 2016, CEUR-WS. All rights reserved.

关键词： Hidden Markov models

来源：评论

学校读者我要写书评

暂无评论

State of the art review of semi active control for magnetorheological dampers

引用

AIP Conference Proceedings 2017年第1期1798卷

作者： Umair Najeeb Mughal 1Department of Industrial Engineering UiT The Arctic University of Norway-Campus Narvik Norway 2Institute of Industrial and Control Engineering Universitat Politecnica de Catalunya Barcelona Spain 3Department of Mechanical Engineering NED University of Engineering and Technology Pakistan

Earthquakes causes severe damage to badly designed structures or buildings to fail or collapse, and also have caused some damage to well-designed structures to malfunction due to the damage or failure of the equipment housed in the structure or building. The use magnetorheological dampers to mitigate the effect of external excitation is increased to resolve this. This article is a state of the art review of nonlinear analytical models to understand the efficacy of semi-active control theory for magnetorheological dampers. A nonlinear semi active control law is desired to be designed which atleast guarantees analytical closed loop stability in order to mitigate the effect of perturbations and drive the desired output to equilibrium.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Plasmonic superradiant antennas

引用

AIP Conference Proceedings 2017年第1期1912卷

作者： Amin Tayebi Scott A. Rice 1Department of Electrical and Computer Engineering College of Engineering Michigan State University East Lansing Michigan 48824 USA 2Department of Physics and Astronomy Michigan State University East Lansing Michigan 48824 USA

Non-Hermitian Hamiltonians have long been utilized in the investigation of open quantum systems in various disciplines, such as the shell model in nuclear physics and solid state quantum computing devices in condensed matter physics to name a few. The hallmark of these systems is the sharp redistribution of decay widths and the segregation of short-lived “superradiant” states and long-lived “trapped” states at sufficiently strong interaction with the continuum. Here we extend the applicability of the non-Hermitian Hamiltonian framework to systems of spherical metallic nano particles where light can be manipulated via surface plasmonic resonances. The signature of superradiance emerges when the interaction between adjacent optical nanoantennas occurs through a single continuum channel, resulting in eigenmodes with distinct properties: superradiant states with enhanced radiation and confined dark modes for which radiation is greatly suppressed. A new type of superradiance occurs in waveguide-like structures that are coupled to an external world such as laser sources and measurement probes. In this case, the neighboring spheres interact indirectly through a common continuum channel provided by the external device, resulting in the same superradiance transition phenomenon. The effect of superradiant states on energy transmission through a one dimensional chain of spheres is also considered, with applications to optical-frequency nano-scale antennas and waveguide-like structures.

关键词：

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：