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Debugging quantum processes using monitoring measurements

Physical Review A 2014年第4期89卷 042338-042338页

作者： Yangjia Li Mingsheng Ying []State Key Laboratory of Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University Beijing 100084 China and Centre for Quantum Computation and Intelligent Systems (QCIS) Faculty of Engineering and Information Technology University of Technology Sydney New South Wales 2007 Australia

Since observation on a quantum system may cause the system state collapse, it is usually hard to find a way to monitor a quantum process, which is a quantum system that continuously evolves. We propose a protocol that can debug a quantum process by monitoring, but not disturb the evolution of the system. This protocol consists of an error detector and a debugging strategy. The detector is a projection operator that is orthogonal to the anticipated system state at a sequence of time points, and the strategy is used to specify these time points. As an example, we show how to debug the computational process of quantum search using this protocol. By applying the Skolem-Mahler-Lech theorem in algebraic number theory, we find an algorithm to construct all of the debugging protocols for quantum processes of time-independent Hamiltonians.

关键词： DEBUGGING in computer science QUANTUM systems COMPUTATIONAL complexity ALGEBRAIC number theory HAMILTONIAN systems ALGORITHMS (Physics)

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Cylindrical dielectric resonator antenna for multiband communication systems

Cylindrical dielectric resonator antenna for multiband commu...

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Workshop on Codes, Cryptography and Communication systems (WCCCS)

作者： Kaoutar Allabouche Mohammed Jorio Najiba El Amrani El Idrissi Tomader Mazri Faculty of science & techniques of Fez Morocco Signals Systems & Components Laboratory Faculty of science & techniques of Fez Morocco Renewable Energy & Intelligent Systems Laboratory Faculty of science & techniques of Fez Morocco Laboratory of Signals Systems & Components National School of Applied Science of Kenitra Morocco Engineering system laboratory

This paper presents a Dielectric Resonator Antenna for multiband operations. The cylindrical shape is designed and fed through a microstrip feed line technique. The proposed design allows the antenna to operate at multiple frequencies in the range of 1.8-8 GHz. It is demonstrated through simulation that the Return Loss values occurred at 2.91 GHz, 4.39 GHz, 5.85 GHz and 7.3 GHz, respectively, having VSWR ≤ 2. It is also observed that the gain of proposed design is higher than the conventional patch antenna.

关键词： Bandwidth Antennas ISO standards Resonant frequency

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Numerical simulation of flow resistivity of Dutch weave mesh 21

Numerical simulation of flow resistivity of Dutch weave mesh

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21st International Congress of Chemical and Process engineering, CHISA 2014 and 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2014

作者： Yoshida, Y. Inoue, Y. Shimosaka, A. Shirakawa, Y. Hidaka, J. Technical Section Kansai Wire Netting Co. Ltd. 7-8 Inari 2-Chome Naniwa-ku Osaka556-0023 Japan Department of Chemical Engineering and Materials Science Faculty of Science and Engineering Doshisha University 1-3 Tatara Miyakodani Kyotanabe-shi Kyoto610-0321 Japan Department of Mechanical Engineering and Intelligent Systems Faculty of Informatics and Engineering University of Electro-Communications 1-5-1 Chofugaoka Chofu Tokyo182-8585 Japan

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Memory H∞ Control for Continuous-Time Markovian Jump systems with Time-Varying Delay and Defective Mode Information

Memory H∞ Control for Continuous-Time Markovian Jump System...

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第三十三届中国控制会议

作者： Yanling WEI Jianbin QIU Hamid Reza KARIMI Research Institute of Intelligent Control and Systems Harbin Institute of Technology Department of Engineering Faculty of Engineering and ScienceUniversity of AgderN-4898 Grimstad Norway

This paper investigates the problems of delay-dependent stability analysis and memory H∞ controller synthesis for a class of continuous-time Markovian jump linear systems(MJLSs) via an input-output(IO) approach. The generality lies in that the exactly known, partially unknown and uncertain transition rates are simultaneously incorporated into the defective mode information. It is first shown that the original system with time-varying delay can be reformulated by a new IO model through a process of two-term approximation and the stability problem of the original system can be transformed into the scaled small gain(SSG) problem of the IO model. Then, based on a Markovian Lyapunov-Krasovskii formulation of SSG condition together with some convexification techniques, the stability analysis and state-feedback H∞ controller synthesis conditions for the underlying MJLSs are formulated in terms of linear matrix inequalities. Simulation studies are provided to illustrate the effectiveness and superiority of the proposed analysis and design methods.

关键词： Markovian Jump systems,Robust Control,Defective Mode Information,Time-Varying Delay,Input-Output Approach

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Flexible triangular formation keeping of marine robotic vehicles using range measurements 19

Flexible triangular formation keeping of marine robotic vehi...

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

作者： Rego, Francisco Soares, Jorge M. Pascoal, António Aguiar, A. Pedro Jones, Colin Laboratory of Robotics and Systems in Engineering and Science Instituto Superior Técnico University of Lisbon Lisbon Portugal Department of Electrical and Computer Engineering Faculty of Engineering University of Porto Porto Portugal Institute of Mechanical Engineering School of Engineering École Polytechnique Fédérale de Lausanne Lausanne Switzerland Distributed Intelligent Systems and Algorithms Laboratory School of Architecture Civil and Environmental Engineering École Polytechnique Fédérale de Lausanne Lausanne Switzerland National Institute of Oceanography Dona Paula Goa India

ISBN: (纸本)9783902823625

This paper addresses the problem of keeping an autonomous marine vehicle in a moving triangular formation by regulating its position with respect to two leader vehicles. The follower vehicle has no prior knowledge of the path described by the leaders but has access to their heading angle and is able to measure inter-vehicle ranges. It is assumed that the distance between the leaders is constant and known. A control strategy is adopted that generates speed and heading commands so as to drive suitably defined along track and cross track errors to zero. The commands are used as input to local inner loops for yaw and speed control. The paper describes the algorithms derived for range-based control and assesses their performance in simulations using realistic models of the vehicles involved. Tests with three autonomous marine vehicles equipped with acoustic modems and ranging devices allow for the evaluation of the performance of the algorithms in a real-world situation. © IFAC.

关键词： Vehicle performance

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A Robust Palmprint Identification System Using Histogram of Oriented Gradients and Multi-classifiers

A Robust Palmprint Identification System Using Histogram of ...

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International Conference on Electrical engineering

作者： Abdallah Meraoumia Salim Chitroub Ahmed Bouridane Univ Ouargla Fac. des nouvelles technologies de l'information et de la communication Lab. de Genie Electrique Laboratory of Intelligent and Communication Systems Engineering (LISIC) Electronics and Computer Science Faculty USTHB Department of Computer Science and Digital Technologies Northumbria University Newcastle

ISBN: (纸本)9781467366748

Nowadays, identification of persons has a great importance for information protection and access control. Thus, automatic person identification based on biometrics has become a focus of interest both for research and commercial purposes. Among the biometrics used, palmprint identification is one of the most stable and reliable technology. Some desirable properties such as uniqueness, stability, and non invasiveness make this technology suitable for highly reliable person identification. In this paper, a method is proposed based on Histogram of Oriented Gradients (HOG) descriptors for palmprint identification. This method utilized the fusion, at matching score level, of some classifiers (Radial Basis Function (RBF), Random Forest Transform (RTF) and Support Vector Machine (SVM)) to improve the performance in identification accuracy. Extensive experiments show the effectiveness of the proposed method with respect to the identification rate.

关键词： Biometrics Identification Palmprint HOG RBF RTF SVM data fusion

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Effects of Functional Range of Knee Extension for Transfemoral Prosthesis on Stair Ascent Motion

Effects of Functional Range of Knee Extension for Transfemor...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Koh Inoue Ryuichi Harada Takahiro Wada Keisuke Suzuki Shin'ichi Tachiwana Department of Intelligent Mechanical Systems Engineering Kagawa University Graduate School of Engineering Kagawa University College of Information Science and Engineering Ritsumeikan University Faculty of Engineering Kagawa University

ISBN: (纸本)9781424479276

We previously proposed a passive mechanism as the link knee joint unit (LKJ) for a transfemoral prosthesis for stair ascent. The prototype allowed the experimental subjects to ascend stairs without the use of a handrail. In the present study, we modified the LKJ unit and developed further two designs of the LKJ unit. One has full knee extension function during the prosthetic stance phase (condition 1). The other design mechanically trades off the functional range of knee extension against stability of the LKJ unit (condition 3). In the stair ascent experiment with six able-bodied subjects, all subjects succeeded in ascending stairs with the three LKJ conditions without the use of a handrail. No difference was found in joint angels and joint moments of the intact and prosthetic legs among all LKJ conditions. However, subjective assessment for ease of LKJ extension during stair ascent showed that the participants felt easier to extend the LKJ unit in the condition 1 and 2 than the condition 3. It is suggested that the condition 1 or 2 is appropriate for prosthesis users who can ascend stairs with the LKJ unit. For prosthesis users who are not familiar with the LKJ unit, the condition 3 would be useful to learn how to use it.

关键词： Knee Prosthetics Joints Force Educational institutions Equations Legged locomotion

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Catalytic driven micro-nanorobots fabricated by direct laser writing

Catalytic driven micro-nanorobots fabricated by direct laser...

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2014 International Symposium on Micro-NanoMechatronics and Human science, MHS 2014

作者： Bakar, Azrena Abu Nakajima, Masahiro Takeuchi, Masaru Fukuda, Toshio Department of Micro-Nano Systems Engineering Nagoya University Nagoya Japan Center for Micro-Nano Mechatronics Nagoya University Nagoya Japan Faculty of Science and Engineering Meijo University Nagoya Aichi Japan Institute for Advanced Research Nagoya University Nagoya Aichi Japan Intelligent Robotics Institute School of Mechatronical Engineering Beijing Institute of Technology Beijing China

ISBN: (纸本)9781479966790

We present the fabrication of catalytic driven micro-nano robot by direct laser writing. The micro-nanorobot has a spiral design of 3,5, and 7 μm named D1, D2 and D3 respectively and a flat top design D4. The micro-nanorobot is catalytically driven in 6% hydrogen peroxide (H2O2) from platinum catalytic area. The result shows that the spiral micro-nanorobot increased in speed except when the micro-nanorobot exhibits the drilling motion. It showed spinning motion, self-propulsion and drilling motion for micro-nanorobot D1, D2 and D3 respectively. The flat top micro-nanorobot has the highest speed and spinning motion was displayed. Future studies should include the actual pollutants in the environment and the effects of the drilling motion on its final content should be observed. © 2014 IEEE.

关键词： Fabrication

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Scalable Resolution-based Image Coding Algorithm

Scalable Resolution-based Image Coding Algorithm

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International Joint Conference on Computer science and Software engineering

作者： Phakphoom Claiboon Sartra Wongthanavasu Cellular Automata and Knowledge Engineering (CAKE) Laboratory Machine Learning and Intelligent Systems (MLIS) Laboratory Department of Computer Science Faculty of Science Khon Kaen University

ISBN: (纸本)9781479958238

Currently, multimedia data has become increasingly more important with the growth of the Internet. Images are one example of sharing across the internet, especially through social media applications. More specifically, nearly every website consists of a considerable amount of image data. Some pictures are stored in multiple resolutions to be displayed as desired. When the same image is stored in different resolutions, it is difficult to manage. This paper presents an algorithm for image coding in scalable resolution. The proposed method consists of an intra-prediction and reversible cellular automata. Intra-predication aims to reduce the data to be compressed and reversible cellular automata allows image data to increase or decrease to the desired resolution. For the performance evaluation, an 8-bit grayscale was experimented with using the proposed method and then compared with JPEG2000 and RCAGIC using PSNR and SSIM statistics. In this regard, the proposed method provides more promising results than RCAGIC and JPEG2000.

关键词： Component Scalable image coding Intra-prediction Cellular automata (CA)

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Embedding of nonlinear systems in a linear parameter-varying representation 19

Embedding of nonlinear systems in a linear parameter-varying...

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

作者： Abbas, Hossam S. Tóth, Roland Petreczky, Mihály Meskin, Nader Mohammadpour, Javad Department of Electrical Engineering College of Engineering Qatar University PO Box 2713 Doha Qatar Control Systems Group Eindhoven University of Technology P.O. Box 513 Eindhoven5600 MB Netherlands Department of Computer Science and Automatic Control Ecole des Mines de Douai Douai59508 France Intelligent Control Systems Lab. College of Engineering University of Georgia AthensGA30602 United States Electrical Engineering Department Faculty of Engineering Assiut University Assiut Egypt

ISBN: (纸本)9783902823625

This paper introduces a systematic approach to synthesize linear parameter-varying (LPV) representations of nonlinear (NL) systems which are originally defined by control affine state-space representations. The conversion approach results in LPV state-space representations in the observable canonical form. Based on the relative degree concept of NL systems, the states of a given NL representation are transformed to new coordinates that provide its normal form. In the SISO case, all nonlinearities of the original system are embedded in one NL function which is factorized to construct the LPV form. An algorithms is proposed for this purpose. The resulting transformation yields an LPV model where the scheduling parameter depends on the derivatives of the inputs and outputs of the system. In addition, if the states of the NL model can be measured or estimated, then the procedure can be modified to provide LPV models scheduled by these states. Examples are included for illustration. © IFAC.

关键词： State space methods

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