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Comment on "Inherent security of phase coding quantum key distribution systems against detector blinding attacks" [Laser Phys. Lett. 15, 095203 (2018)]

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arXiv 2018年

作者： Fedorov, Aleksey Gerhardt, Ilja Huang, Anqi Jogenfors, Jonathan Kurochkin, Yury Lamas-Linares, Antía Larsson, Jan-Åke Leuchs, Gerd Lydersen, Lars Makarov, Vadim Skaar, Johannes Russian Quantum Center Skolkovo Moscow143025 Russia QRate Skolkovo Moscow143025 Russia QApp Skolkovo Moscow143025 Russia Institute of Physics University of Stuttgart Institute for Quantum Science and Technology Pfaffenwaldring 57 StuttgartD-70569 Germany Max Planck Institute for Solid State Research Heisenbergstraße 1 StuttgartD-70569 Germany Institute for Quantum Information State Key Laboratory of High Performance Computing College of Computer National University of Defense Technology Changsha410073 China Department of Electrical Engineering Linköping University LinköpingSE-58183 Sweden Texas Advanced Computing Center University of Texas at Austin AustinTX United States Max Planck Institute for the Science of Light University of Erlangen-Nürnberg ErlangenD-91058 Germany Kringsjåvegen 3E TrondheimNO-7032 Norway National University of Science and Technology MISIS Moscow119049 Russia Department of Technology Systems University of Oslo Box 70 KjellerNO-2027 Norway

Fast Deformable Model for Pedestrian Detection with Haar-like features

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Fast Deformable Model for Pedestrian Detection with Haar-lik...

IEEE Symposium Series on Computational Intelligence (SSCI)

作者： Kuang-Pen Chou Mukesh Prasad Deepak Puthal Ping-Hung Chen Dinesh Kumar Vishwakarma Suresh Sundarami Chin-Teng Lin Wen-Chieh Lin Institute of Computer Science and Engineering National Chiao-Tung University Hsinchu Taiwan Centre for Artificial Intelligence University of Technology Sydney Australia School of Electrical and Data Engineering University of Technology Sydney Australia Institute of Electrical and Control Engineering National Chiao-Tung University Hsinchu Taiwan Department of Electronics & Communication Engineering Delhi Technological University India Nanyang Technological University Singapore Singapore SG Department of Computer Science National Chiao-Tung University Hsinchu Taiwan

This paper proposes a novel Fast Deformable Model for Pedestrian Detection (FDMPD) to detect the pedestrians efficiently and accurately in the crowded environment. Despite of multiple detection methods available, detection becomes difficult due to variety of human postures and perspectives. The proposed study is divided into two parts. First part trains six Adaboost classifiers with Haar-like feature for different body parts (e.g., head, shoulders, and knees) to build the response feature maps. Second part uses these six response feature maps with full-body model to produce spatial deep features. The combined deep features are used as an input to SVM to judge the existence of pedestrian. As per the experiments conducted on the INRIA person dataset, the proposed FDMPD approach shows greater than 44.75 % improvement compared to other state-of-the-art methods in terms of efficiency and robustness.

关键词： Feature extraction Support vector machines Magnetic heads Computational modeling Knee Head Adaptation models

New strategy for highly effective p-type doping of nitrides: Energy band tailoring

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New strategy for highly effective p-type doping of nitrides:...

Solid-State Lighting, SSL 2017

作者： Liu, Zhiqiang Yi, Xiaoyan Wang, Junxi Li, Jinmin Lu, Na Ferguson, Ian Zhang, Yong Research and Development Center for Solid State Lighting Institute of Semiconductors Chinese Academy of Science Beijing100086 China State Key Laboratory of Solid State Lighting Beijing100086 China Lyles School of Civil Engineering Purdue University West LafayetteIN47907 United States College of Engineering and Computing Missouri University of Science and Technology 305 McNutt Hall 1400 N. Bishop RollaMO65409 United States Department of Electrical and Computer Engineering The University of North Carolina at Charlotte 9201 University City Blvd. CharlotteNC28223 United States

A new strategy for achieving efficient p-type doping has been proposed and investigated. Furthermore, a diagnostic technique for examining the impurity level was proposed based on photoluminescence thermal quenching.

ISBN: (纸本)9781943580361

关键词： Semiconductor doping

BitID: Easily Add Battery-Free Wireless Sensors to Everyday Objects

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BitID: Easily Add Battery-Free Wireless Sensors to Everyday ...

International Conference on Smart computing (SMARTCOMP)

作者： Tengxiang Zhang Nicholas Becker Yuntao Wang Yuan Zhou Yuanchun Shi Department of Computer Science and Technology Tsinghua University Beijing China Global Innovation eXchange Institute Tsinghua University Beijing China Department of Electrical Engineering University of Washington Seattle USA Chinese Academy of Sciences Institute of Computing Technology Beijing China Tsinzhua National Laboratory for Information Science and Technology

ISBN: (纸本)9781509065189

Radio-Frequency Identification (RFID) systems are becoming increasingly used within smart environments. In this paper, we propose BitID, a passive Ultra-High Frequency (UHF) RFID based sensing technique that can easily be made using off-the-shelf tags. BitID can be added to everyday objects to enable sensing and control capabilities. With a simple shorting mechanism, BitID is able to differentiate between two states of the object to which it is attached (for example, whether a door is open or closed). We explain the working principle of BitID, and demonstrate how to build and apply it to target objects. We also show that by using a three- layered system architecture, BitID can be used for various applications, including event detection, energy monitoring, fitness tracking, human behavior tracking and control.

关键词： RFID tags Antennas Strips Monitoring Modulation

Substrate surface engineering for high-quality silicon/aluminum superconducting resonators

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arXiv 2018年

作者： Earnest, C.T. Bejanin, J.H. McConkey, T.G. Peters, E.A. Korinek, A. Yuan, H. Mariantoni, M. Institute for Quantum Computing University of Waterloo 200 University Avenue West WaterlooONN2L 3G1 Canada Department of Physics and Astronomy University of Waterloo 200 University Avenue West WaterlooONN2L 3G1 Canada Department of Electrical and Computer Engineering University of Waterloo 200 University Avenue West WaterlooONN2L 3G1 Canada Canadian Centre for Electron Microscopy Department of Materials Science and Engineering McMaster University 1280 Main Street West HamiltonONL8S 4M1 Canada

Quantum bits (qubits) with long coherence times are an important element for the implementation of medium-and large-scale quantum computers. In the case of superconducting planar qubits, understanding and improving qubits' quality can be achieved by studying superconducting planar resonators. In this Paper, we fabricate and characterize coplanar waveguide resonators made from aluminum thin films deposited on silicon substrates. We perform three different substrate treatments prior to aluminum deposition: One chemical treatment based on a hydrouoric acid clean;one physical treatment consisting of a thermal annealing at 880 C in high vacuum;one combined treatment comprising both the chemical and the physical treatments. The aim of these treatments is to remove the two-level state defects hosted by the native oxides residing at the various sample's interfaces. We first characterize the fabricated samples through cross-sectional tunneling electron microscopy acquiring electron energy loss spectroscopy maps of the samples' cross sections. These measurements show that both the chemical and the physical treatments almost entirely remove native silicon oxide from the substrate surface and that their combination results in the cleanest interface. We then study the quality of the resonators by means of microwave measurements in the \quantum regime", i.e., at a temperature T 10mK and at a mean microwave photon number hnphi 1. In this regime, we find that both surface treatments independently improve the resonator's intrinsic quality factor and that the highest quality factor is obtained for the combined treatment, Qi 0:8 million. Finally, we find that the TLS quality factor averaged over a time period of 3 h is 3 million at hnphi 10, indicating that substrate surface engineering can potentially reduce the TLS loss below other losses such as quasiparticle and vortex loss. Copyright © 2018, The Authors. All rights reserved.

关键词： High resolution transmission electron microscopy

Measurement and statistical analysis of end user satisfaction with mobile network coverage in afghanistan

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arXiv 2017年

作者： Habibi, M.A. Ulman, M. Baha, B. Stočes, M. Institute for Wireless Communication and Navigation Department of Electrical and Computer Engineering Technical University of Kaiserslautern Germany Department of Information Technologies Faculty of Economics and Management Czech University of Life Sciences Prague Czech Republic School of Computing Engineering and Mathematics Faculty of Science and Engineering University of Brighton United Kingdom

Network coverage is one of the fundamental requirements of any business of a service provider. Mobile operators are expected to deploy base stations in an effective way in order to cover most of the residential areas of a particular country. Improved network coverage leads to increase total revenue, provide end users with enhanced Quality of Services (QoS) anytime anywhere, and play vital role in the development of telecom sector. In this paper, we measure and statistically analyze network coverage of mobile operators in Afghanistan. Our study is based on primary data collected on random basis from 1,515 mobile phone users of cellular operators. The relationship between "No Network Coverage" in some residential areas and "Satisfaction of Mobile Phone Users" is also investigated. We furthermore propose realistic, feasible and cost-efficient solutions to mobile operators and policy makers in order to expand network coverage to non-covered residential areas as well as enhance the performance of networks in existing covered areas of the country. Copyright © 2017, The Authors. All rights reserved.

关键词： Statistical methods

SmartVM: A Multi-Layer Microservice-Based Platform for Deploying SaaS

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SmartVM: A Multi-Layer Microservice-Based Platform for Deplo...

IEEE International Symposium on Parallel and Distributed Processing with Applications and IEEE International Conference on Ubiquitous computing and Communications (ISPA/IUCC)

作者： Xi Zheng Jiaojiao Jiang Yuqun Zhang Yao Deng Min Fu Tianlei Zheng Xiao Liu Department of Computer Science and Engineering Southern University of Science and Technology Shenzhen China School of Software and Electrical Engineering Swinburne University of Technology Melbourne Australia School of Information Technology Deakin University Melbourne Australia Data61 CSIRO Sydney Australia School of Computing and Information Systems The University of Melbourne Melbourne Australia

ISBN: (纸本)9781538637913

With the advent of Software-as-a-Service (SaaS), SaaS developers are facing many challenges associated with the multi-tenancy and the dramatically increased number of users. In order to achieve resource-optimized, on-demand dynamic scaling across multiple tenants, and reduce costs, in this paper, a new platform, named SmartVM, is created to enable SaaS developer to create, customize, and deploy SaaS solutions in a multi-tier microservice-based manner. We develop an e-commerce SaaS prototype to evaluate effectiveness and efficiency of SmartVM. The results show that the SmartVM deployments outperforms the conventional monolithic and microservice deployments in smart monitoring, cost reduction, and resource optimization.

关键词： Containers Monitoring Business Software as a service Australia Scalability Measurement

On matching, and even rectifying, dynamical systems through koopman operator eigenfunctions

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arXiv 2017年

作者： Bollt, Erik M. Li, Qianxiao Dietrich, Felix Kevrekidis, Ioannis Department of Mathematics Department of Electrical and Computer Engineering Department of Physics Clarkson University PotsdamNY13699 United States Institute of High Performance Computing Agency for Science Technology and Research Singapore138632 Singapore Department of Chemical and Biomolecular Engineering Department of Applied Mathematics and Statistics Johns Hopkins University and JHMI

Matching dynamical systems, through different forms of conjugacies and equivalences, has long been a fundamental concept, and a powerful tool, in the study and classification of nonlinear dynamic behavior (e.g. through normal forms). In this paper we will argue that the use of the Koopman operator and its spectrum is particularly well suited for this endeavor, both in theory, but also especially in view of recent data-driven algorithm developments. We believe, and document through illustrative examples, that this can nontrivially extend the use and applicability of the Koopman spectral theoretical and computational machinery beyond modeling and prediction, towards what can be considered as a systematic discovery of "Cole-Hopf-type" transformations for dynamics. Copyright © 2017, The Authors. All rights reserved.

关键词： Dynamical systems

Empirical data analysis: A new tool for data analytics

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Empirical data analysis: A new tool for data analytics

2016 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2016

作者： Angelov, Plamen Gu, Xiaowei Kangin, Dmitry Principe, Jose Data Science Group School of Computing and Communications Lancaster University Lancaster United Kingdom Computational Neuro Engineering Laboratory Department of Electrical and Computer Engineering University of Florida GrainsvilleFL United States

ISBN: (纸本)9781509018970

In this paper, a novel empirical data analysis approach (abbreviated as EDA) is introduced which is entirely data-driven and free from restricting assumptions and pre-defined problem- or user-specific parameters and thresholds. It is well known that the traditional probability theory is restricted by strong prior assumptions which are often impractical and do not hold in real problems. Machine learning methods, on the other hand, are closer to the real problems but they usually rely on problem- or user-specific parameters or thresholds making it rather art than science. In this paper we introduce a theoretically sound yet practically unrestricted and widely applicable approach that is based on the density in the data space. Since the data may have exactly the same value multiple times we distinguish between the data points and unique locations in the data space. The number of data points, k is larger or equal to the number of unique locations, l and at least one data point occupies each unique location. The number of different data points that have exactly the same location in the data space (equal value), f can be seen as frequency. Through the combination of the spatial density and the frequency of occurrence of discrete data points, a new concept called multimodal typicality, τMM is proposed in this paper. It offers a closed analytical form that represents ensemble properties derived entirely from the empirical observations of data. Moreover, it is very close (yet different) from the histograms, from the probability density function (pdf) as well as from fuzzy set membership functions. Remarkably, there is no need to perform complicated pre-processing like clustering to get the multimodal representation. Moreover, the closed form for the case of Euclidean, Mahalanobis type of distance as well as some other forms (e.g. cosine-based dissimilarity) can be expressed recursively making it applicable to data streams and online algorithms. Inference/estimation of the ty

关键词： Membership functions