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Comparing models for modeling subjective and objective measures for two task types

Comparing models for modeling subjective and objective measu...

IEEE International Multi-Disciplinary Conference on Cognitive Methods in Situation Awareness and Decision Support (CogSIMA)

作者： Stephanie Lackey Brandon Sollins Lauren Reinerman-Jones Service Robotics Department Institut Supérieur d'Electronique et du Numérique (ISEN) Lille France Computer and Software Eng. Department Politehnica University of Timisoara Romania E&A (Energy & Automation) Faculty of Engineering Technology Gent Belgium

Adaptive automation (AA) has emerged as a viable solution to improving human performance in complex environments. However, understanding when to prompt, pause, and terminate AA remains unclear. Augmenting the user with physiological sensors offers new insight into the user's state, and thus, offers insight into when and how to implement AA. The research presented investigates the efficacy of prediction algorithms for modeling physiological and subjective data in AA environments. A comparison of traditional and emerging modeling methods results in recommendations for algorithm selection, generalizability, and risks of over fitting data are provided.

关键词： Classification algorithms Prediction algorithms Biomedical monitoring Logistics Linear regression Algorithm design and analysis Static VAr compensators

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GROUP CONSENSUS FOR MULTIPLE NETWORKED EULER-LAGRANGE SYSTEMS WITH PARAMETRIC UNCERTAINTIES

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Journal of Systems Science & Complexity 2014年第4期27卷 632-649页

作者： HU Hongxiang ZHANG Zhe YU Li YU Wenwu XIE Guangming Department of Mathematics Hangzhou Dianzi University Zhejiang Provincial United Key Laboratory of Embedded Systems Department of AutomationZhejiang University of Technology Department of Mathematics Southeast University School of Electrical and Computer Engineering RMIT University Faculty of Engineering King Abdulaziz University Center for Systems and Control State Key Laboratory of Turbulence and Complex SystemsCollege of EngineeringPeking University

In this paper,a group consensus problem is investigated for multiple networked agents with parametric uncertainties where all the agents are governed by the Euler-Lagrange system with uncertain *** the group consensus problem,the agents asymptotically reach several different states rather than one consistent state.A novel group consensus protocol and a time-varying estimator of the uncertain parameters are proposed for each agent in order to solve the couple-group consensus *** is shown that the group consensus is reachable even when the system contains the uncertain ***,the multi-group consensus is discussed as an extension of the couple-group consensus,and then the group consensus with switching topology is *** results are finally provided to validate the effectiveness of the theoretical analysis.

关键词： Euler-Lagrange system group consensus multi-agent systems switching topologies.

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Network motifs detection strategies and using for bioinformatic networks

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Journal of Bionanoscience 2014年第5期8卷 353-359页

作者： Alinejad-Rokny, Hamid Pourshaban, Hamed Orimi, Amir Goram Baboli, Miresmaeil Mirnabi Faculty of Medicine University of New South Wales SydneyNSW2018 Australia School of Computer Science and Engineering University of New South Wales Sydney2018 Australia Faculty of Computer Engineering University of Mazandaran Mazandaran Babol*** Iran Institute of Informatics and Automation Problem Yerevan-Armenia-Babol*** Iran Yerevan Telecommunication Research Institute-YTRI Yerevan-Armenia-Babol*** Iran

Complex networks from scopes like Sociology or Biology are exist in many e-Science data sets. Mostly we need to computational algorithms for dealing with networks. For Example, detecting characteristic patterns, network motifs or problem involving sub-graph mining and graph isomorphism. In this paper, we provide a review and runtime comparison of current popular motif identification algorithms. We will categorize the algorithms outlining the major differences and each strategy's advantages;and finally execute current strategies in the same platform on Bioinformatic applications and compare the results. Copyright © 2014 American Scientific Publishers.

关键词： Bioinformatics

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Jerk and current limited flatness-based open loop control of foveation scanning electrostatic micromirrors 19

Jerk and current limited flatness-based open loop control of...

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19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014

作者： Schroedter, Richard Janschek, Klaus Sandner, Thilo AMS Microscanner R and D Dresden Germany Institute of Automation Faculty of Electrical and Computer Engineering Technische Universität Dresden Dresden Germany

ISBN: (纸本)9783902823625

This paper describes open loop control measures for performance improvements of electrostatic micromirrors in context with foveation scanning for 3D time-of-flight cameras. The generation of high accuracy scanning trajectories with scene dependent variable slope is realized by a flatness-based open loop control scheme. Previous flatness-based control solutions have shown unfavorable residual oscillations excited at slope reverse points and high drive currents at zero-crossing comb deflection due to square-root voltage law for electrostatic mirror control. Jerk limited trajectories are introduced for reduction of residual oscillations and their impact on scanning trajectory properties is expressed by design formulas. A considerable reduction of zero-crossing drive currents can be achieved by using a dual-comb control law at small deflection angles reducing the effective drive voltage slope. The paper addresses the basic micromirror models and describes in detail the jerk and current limitation control measures in context with the flatness-based control concept. Experimental results prove the adequacy of the proposed solutions. © IFAC.

关键词： Electric machine control

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Current control of a vsi-fed induction machine by predictive technique

Current control of a vsi-fed induction machine by predictive...

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28th European Conference on Modelling and Simulation, ECMS 2014

作者： Ivanov, Sergiu RǍsvan, Vladimir Bobaşu, Eugen Popescu, Dan StîngǍ, Florin Faculty of Electrical Engineering University of Craiova 107 Decebal Blv. 200440 Craiova Romania Faculty of Automation Computer and Electronics 107 Decebal Blv. 200440 Craiova Romania

ISBN: (纸本)9780956494481

The paper deals with a technique which uses the predictive concepts in order to obtain the pulse width modulation strategy of a voltage fed inverter. After the technique is briefly described, it is applied for the case when the inverter supplies an induction motor, the reference values of the currents being obtained from a classical vector control scheme. The described technique is then simulated and the waveforms are compared with ones obtained with preset currents (bangbang) pulse width modulation, as the behaviour of the two strategies are similar. Finally, the results are cross analysed and further actions are proposed for the work continuation. Proceedings 28th European Conference on Modelling and Simulation © ECMS Flaminio Squazzoni, Fabio Baronio, Claudia Archetti, Marco Castellani (Editors).

关键词： Pulse width modulation

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Evolution of isolated G-band bright points: size, intensity and velocity

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Research in Astronomy and Astrophysics 2014年第6期14卷 741-752页

作者： Yun-Fei Yang Jia-Ben Lin Song Feng Kai-Fan Ji Hui Deng Feng Wang Faculty of Information Engineering and Automation/Yunnan Key Laboratory of Computer Technology Application Kunming University of Science and Technology Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences Key Laboratory of Modern Astronomy and Astrophysics Nanjing University Ministry of Education

We study the evolution pattern of isolated G-band bright points （GBPs） in terms of their size, intensity and velocity. Using a high resolution image sequence taken with the Hinode/Solar Optical Telescope （SOT）, we detect GBPs in each image by the Laplacian and Morphological Dilation algorithm, and track their evolutions by a 26-adjacent method in a three-dimensional space-time cube. For quantifying the evolution, we propose a quantification method based on lifetime normalization which aligns the different lifetimes to common stages. The quantification results show that, on average, the diameter of isolated GBPs changes from 166 to 173 km, then down to 165 km; the maximum intensity contrast changes from 1.012 to 1.027, then down to 1.011; however, the velocity changes from 1.709 to 1.593 km s-1, then up to 1.703 km s-i. The results indicate that the evolution follows a pattern such that the GBP is small, faint and fast-moving at the birth stage, becomes big, bright and slow-moving at the middle stage, then gets small, faint and fast-moving at the decay stage until disappearance. Although the differences are very small, a two-sample t-test is used to demonstrate there are significant differences in means between the distri- butions of the different stages. Furthermore, we quantify the relationship between the lifetimes of GBPs and their properties. It is found that there are positive correlations between the lifetimes and their sizes and intensities with correlation coefficients of 0.83 and 0.65, respectively; however, there is a negative correlation between the life- times and velocities with a correlation coefficient of-0.49. In summary, the longer the GBP persists, the bigger, brighter and slower it will be.

关键词： techniques： image processing -- Sun： photosphere -- methods： dataanalysis -- methods： statistical

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Research in video detection of lane curve and its application in speed alert system

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Research Journal of Applied Sciences, engineering and Technology 2014年第5期7卷 957-962页

作者： Song, Maliang Liu, Xiaoyan Faculty of Information Engineering and Automation Kunming University of Science and Technology Yunnan Province 650500 China Yunnan Provincial Key Laboratory of Computer Application Technology Yunnan Province 650500 China

That vehicles travel on a curve with excessive speed tends to skid or roll over. This study presents research in video recognition technology of lane and its application in traffic early safety alert system, which improves traffic safety. In our study, we use a monocular camera to acquire the image of the road ahead. Techniques such as gray-scale transformation, filtering, edge detection and curve fitting are used for the recognition of the lane line and curve fitting. Then radius of curvature of the road ahead will be extracted and then the maximum safe speed, which is to be compared with the speed of the vehicle in safety alert system. Experiments show that this method can accurately calculate the radius of the curve ahead and timely give alert message when the vehicle's speed exceeds safe speed. © Maxwell Scientific Organization, 2014.

关键词： computer image processing Coordinate transform Monocular vision Speed alert

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Time-efficient trajectories under velocity and acceleration constraints

Time-efficient trajectories under velocity and acceleration ...

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IEEE International Conference on Autonomous Robot Systems and Competitions (ICARSC)

作者： Martin Pfanne Klaus Janschek Faculty of Electrical and Computer Engineering Institute of Automation Dresden Germany

This paper proposes a new approach to the boundary value problem of finding a vehicle path from an initial state, defined by a position and velocity vector, to a target position. The presented method explicitly considers magnitude constraints on both the velocity and the acceleration of the vehicle when determining the path. A semi-analytic and computationally efficient algorithm is employed, applicable for real-time and embedded environments. The generated trajectories aim to minimize the time to target, using parabolic arcs and straight lines. Solutions to both the 2D and 3D problem are introduced. Additionally, a comparison with proven time-optimal path planning approaches, namely Dubins curves, demonstrates the contribution of the presented algorithm.

关键词： Acceleration Trajectory Vectors Vehicles Three-dimensional displays Equations Mathematical model

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A closed-loop system of construction and demolition waste recycling 31

A closed-loop system of construction and demolition waste re...

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31st International Symposium on automation and Robotics in Construction and Mining, ISARC 2014

作者： Brennan, J. Ding, G. Wonschik, C.-R. Vessalas, K. School of Civil Engineering University of Technology Sydney Australia School of the Built Environment University of Technology Sydney Australia Faculty of Automation and Computer Sciences University of Applied Sciences Germany

ISBN: (纸本)9780646597119

This study discusses the construction and demolition waste recycling stream both in Australia and in Germany. Differences and commonalities in commercial practices between the two countries are outlined, and open research questions are introduced. Following McDonough and Braungart's cradle-to-cradle theorem, and ideal closed-loop system within the building life cycle is proposed. Deficiencies and efficiencies in the closed-loop system are reported and assessed and related parameters promoting or hindering the closed-loop system are evaluated. Results of the study demonstrate that reusable and non-reusable materials generated from construction and demolition operations, which are destined for landfill, are categorized differently between the recycling systems used in Australia and Germany.

关键词： Closed loop systems

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Analysis of oxygen saturation detection method on intelligent mobile devices

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Ruan Jian Xue Bao/Journal of Software 2015年 26卷 165-176页

作者： Chen, Yi-Neng Deng, Xiao-Ming He, Yue Lu, Lu Tian, Feng Wang, Feng Dai, Guo-Zhong Wang, Hong-An Beijing Key Laboratory of Human-Computer Interaction nstitute of Software The Chinese Academy of Sciences Beijing100190 China School of Computer and Control Engineering University of Chinese Academy of Sciences Beijing100049 China Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming650093 China

With the fast development of mobile devices and great concern on health surveillance, it is becoming increasingly popular to collect, analyze, and interpret people's health-related data by using intelligent mobile devices in their daily life. Oxygen saturation is an important physiological parameter referring to the concentration of oxygen in the blood, and prolonged low oxygen levels may lead to respiratory or cardiac arrest. Previous oxygen saturation detection methods require infrared light, however most of the off-the-shelf mobile devices lack such infrared light transmitter and receiver modules. This paper presents a novel oxygen saturation estimation method emplying a RGB camera and visible light in most of mobile devices. By applying of traditional optical oxygen saturation estimation model to mobile devices, and analyzing its problem for those devices, this study proposes a new oxygen saturation estimation model on intelligent mobile devices and offers an approach to solve the baseline drift problem in mobile cameras. Experiments demonstrate the effectiveness of the proposed method and its potentials in many oxygen saturation based researches such as daily-activity based healthcare with mobile devices. © Copyright 2015, Institute of Software, the Chinese Academy of Sciences. All rights reserved.

关键词： Cameras

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