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IEEE Industry Applications Society Annual Meeting

作者： Mustafa Farhadi Osama Mohammed Energy Systems Research Laboratory Department of Electrical and Computer Engineering Florida International University

ISBN: (纸本)9781467352031

In this paper, real-time operation and harmonic analysis of isolated and non-isolated DC microgrid including hybrid energy sources and various loading schemes is investigated. The proposed microgrid is supplied by an internal generator and via AC grid, while a supercapacitor bank, as power buffer, fulfills the high power requirement of the DC grid. An energy management algorithm based on the master-slave control is proposed, in which the supercapacitor bank, as the master, control the DC bus voltage while the other units are working in current control to share the required power. Different operation mode based on various power sharing patterns is defined and the experimental test is carried out for both isolated and non-isolated DC grid. Results show that the proposed energy management algorithm properly shares power and control the voltage. Moreover, the isolation of the DC microgrid highly effect on the harmonic content of the current depending on the power sharing pattern.

关键词： Isolated DC grid Non-isolated DC grid Supercapacitor Energy management Voltage control Harmonic analysis

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Metamaterial-inspired miniaturized microwave edge coupled surface scanning probe

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AIP Conference Proceedings 2013年第1期1511卷 1789-1794页

作者： Nophadon Wiwatcharagoses Kyoung Y. Park Premjeet Chahal Lalita Udpa Terahertz Systems Laboratory (TeSLa) Department of Electrical and Computer Engineering Michigan State University East Lansing MI 48824 USA Nondestructive Evaluation Laboratory Department of Electrical and Computer Engineering Michigan State University East Lansing MI 48824 USA

This paper introduces a new concept on sub-wavelength resolution imaging and surface scanning using metamaterial based near field sensor array. Multiple split ring resonator structures (SRRs), having different band stop frequencies, are implemented in a microstrip transmission line configuration. A mirror image copy of these resonators is also incorporated on the transmission line to achieve built in frequency references. A smart card is scanned to detect buried antenna and Si chip within the plastic card.

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Feature extraction from electroencephalographic records using EEGFrame framework

Feature extraction from electroencephalographic records usin...

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Proceedings of the International Convention MIPRO

作者： Alan Jović Lea Suć Nikola Bogunović Faculty of Electrical Engineering and Computing Department of Electronics Microelectronics Computer and Intelligent Systems University of Zagreb Zagreb Croatia

Analysis of electroencephalographic (EEG) signals usually includes visual inspection of the signal, feature extraction, and model generation. computer-aided nonlinear feature extraction from EEG in particular has already led to improved descriptive and prognostic models of brain states and disorders. However, in this field, there is a lack of freely available powerful tools for scientific exploration of EEG that would help researchers to compare the results of their work with others. Especially, because of the great diversity of the proposed methods for EEG analysis, there exists a need for a joint framework for inspection, extraction and visualization performed on the EEG records. The aim of this paper is to introduce such a framework, called EEGFrame, with its implementation in Java. The framework currently supports the analysis of standard EDF records via signal inspection, feature extraction, and feature vectors storage for knowledge discovery. EEGFrame is the result of refactoring and extension of the HRVFrame framework for heart rate variability analysis, with added methods for EEG analysis. This paper describes the properties and capabilities of the framework and discusses its relevance with respect to similar work. The main advantage of EEGFrame is its support for numerous linear and nonlinear methods described in literature.

关键词： Feature extraction Electroencephalography Entropy Brain modeling MATLAB Visualization

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Cooperative AUV motion planning using terrain information

Cooperative AUV motion planning using terrain information

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OCEANS 2013 MTS/IEEE Bergen: The Challenges of the Northern Dimension

作者： Hausler, Andreas J. Saccon, Alessandro Pascoal, Antonio M. Hauser, John Aguiar, A. Pedro Laboratory of Robotics and Systems in Science and Engineering Instituto Superior Técnico Lisbon Portugal Department of Mechanical Engineering Eindhoven University of Technology Netherlands Electrical Computer and Energy Engineering Department University of Colorado at Boulder Colorado United States Faculdade de Engenharia University of Porto Portugal

ISBN: (纸本)9781479900015

There is widespread interest in the deployment of fleets of marine robots with the potential to roam the oceans freely and collect data at an unprecedented scale. This calls for the development of efficient algorithms for multiple vehicle motion planning that can take directly into account the capabilities of each vehicle as well as the environmental conditions and lend themselves to seamless integration with control and navigation systems. The latter connection is for the most part eschewed in the literature, in spite of the obvious fact that in order for the vehicles to execute the planned motions they must at a later stage navigate with great accuracy and follow the trajectories using control algorithms that take explicitly into account the dynamical constraints of the vehicles involved. Among the methods available for underwater vehicle navigation, terrain-based techniques have recently come to the fore. These techniques avoid the use of overly expensive inertial-like motion sensor units and hold considerable promise for the development of a new breed of affordable long range navigation systems. Motivated by these considerations, we tackle in the present paper the problem of multiple vehicle motion planning by taking explicitly into consideration inter-vehicle collision avoidance, together with a number of criteria that may include simultaneous times of arrival at assigned target points, energy minimization, acoustic communication constraints, and the maximization of terrain information along the vehicle paths (as measured by some appropriate criterion) for terrain-based navigation purposes. © 2013 IEEE.

关键词： Motion planning

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Experimentally effective clean process to C-V characteristic variation reduction of HKMG MOS devices

Experimentally effective clean process to C-V characteristic...

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IEEE Conference on Nanotechnology

作者： Chien-Hung Chen Yiming Li Chieh-Yang Chen Yu-Yu Chen Sheng-Chia Hsu Wen-Tsung Huang Sheng-Yuan Chu Department of Electrical Engineering National Cheng-Kung University Tainan Taiwan Department of Electrical and Computer Engineering Parallel and Scientific Computing Laboratory Hsinchu Taiwan

ISBN: (纸本)9781479906741

In this work, the planar HKMG MOS devices are fabricated on (100) wafer with p-substrate. To improve the samples' interface roughness between the Si/Ge film and the interface layer, three different clean treatments are considered to fabricate the MOS devices. Among processes, the experiment indicates that HF and water rinse can present hydrogen termination to bond silicon as a good passivation. The measured C-V curves and HRTEM of the fabricated samples show the interface roughness is improved significantly. The extracted shift of flat band voltage (ΔV fb ) and density of interface traps (D it ) have around 50% improvement.

关键词： Silicon Capacitance-voltage characteristics Surface cleaning Rough surfaces Surface roughness Films

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Mathematical and Numerical Aspects of the Adaptive Fast Multipole Poisson-Boltzmann Solver

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Communications in Computational Physics 2013年第1期13卷 107-128页

作者： Bo Zhang Benzhuo Lu Xiaolin Cheng Jingfang Huang Nikos P.Pitsianis Xiaobai Sun JAndrew McCammon Department of Computer Science Duke UniversityNC 27708USA Institute of Computational Mathematics and Scientific/Engineering Computing Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100910China Center for Molecular Biophysics Oak Ridge National LaboratoryTN 37831USA Department of Mathematics University of North CarolinaChapel HillNC 27599USA Department of Electrical and Computer Engineering Aristotle UniversityThessaloniki54124Greece Department of Chemistry&Biochemistry Center for Theoretical Biological PhysicsDepartment of PharmacologyHoward Hughes Medical InstituteUniversity of CaliforniaSan DiegoCA 92093USA

This paper summarizes the mathematical and numerical theories and computational elements of the adaptive fast multipole Poisson-Boltzmann(AFMPB)*** introduce and discuss the following components in order:the Poisson-Boltzmann model,boundary integral equation reformulation,surface mesh generation,the nodepatch discretization approach,Krylov iterative methods,the new version of fast multipole methods(FMMs),and a dynamic prioritization technique for scheduling parallel *** each component,we also remark on feasible approaches for further improvements in efficiency,accuracy and applicability of the AFMPB solver to largescale long-time molecular dynamics *** potential of the solver is demonstrated with preliminary numerical results.

关键词： Biomolecular system electrostatics Poisson-Boltzmann equation fast multipole methods mesh generation directed acyclic graph dynamic prioritization parallelization

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Corrections to “Percolation Theory-Based Exposure-Path Prevention for Wireless Sensor Networks Coverage in Internet of Things” [Oct 13 3625-3636]

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IEEE Sensors Journal 2014年第3期14卷 926-926页

作者： Liang Liu Xi Zhang Huadong Ma Beijing University of Posts and Telecommunications Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia Beijing China Department of Electrical and Computer Engineering Networking and Information Systems Laboratory College Station TX USA

In the above paper (ibid., vol. 13, no. 10, pp. 3625-3636, Oct. 2013), Fig. 15 is incorrect. The correct Fig. 15 is presented here.

关键词： Wireless sensor networks Internet Stochastic processes

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Semiconductor Manufacturing for Clean Energy Economy

Semiconductor Manufacturing for Clean Energy Economy

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IEEE Energytech

作者： R. Singh K. Shenai G. F. Alapatt S. M. Evon Center for Silicon Nanoelectronics in the Holcombe Department of Electrical and Computer Engineering at Clemson University Electrical Systems Division at Argonne National Laboratory Holcombe Department of Electrical and Computer Engineering at Clemson University

ISBN: (纸本)9781467344456

Global use of solar energy and wind energy will provide clean energy for sustainable global economic growth. The use of photovoltaic systems for DC power generation and the delivery and the utilization of DC power will bring revolution in energy field by providing ultra-low-cost clean energy to rich and poor all over the world. Ultra large scale manufacturing of PV modules coupled with wide band gap (notably SiC and GaN) based semiconductor manufacturing will enable the DC power production, delivery and utilization in a manner similar to what silicon semiconductor manufacturing has done in enabling the information revolution. In this paper we have described the current status of photovoltaic (PV) module manufacturing and WBG based semiconductor manufacturing and provided directions for future R& D and commercialization that will lead to sustainable global economic growth of clean energy economy.

关键词： Clean energy SEMICONDUCTOR MANUFACTURING DC power supply Pv modules information society Semiconductor materials Photovoltaic systems Revolution Economy Solar Energy module manufacturing Obstetric Delivery

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TIMING SIDE CHANNELS FOR TRAFFIC ANALYSIS

TIMING SIDE CHANNELS FOR TRAFFIC ANALYSIS

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IEEE International Conference on Acoustics, Speech and Signal Processing

作者： Xun Gong Negar Kiyavash Coordinated Science Laboratory UIUC Department of Electrical and Computer Engineering UIUC Department of Industrial and Enterprise Systems Engineering UIUC

ISBN: (纸本)9781479903573

Traffic analysis often requires direct observations of network connections at local vantage points. In this work, we show that traffic analysis can be performed remotely by taking advantage of a timing side channel. The timing side channel results from a shared resource, namely, the scheduler between two users. Utilizing Shannon equivocation as a privacy metric, we prove that one user can learn the complete traffic pattern of the other user if the scheduler employs a first come first serve (FCFS) policy. Moreover, we show the feasibility of a real system attack exploiting the timing side channel inside a home digital subscriber line (DSL) router. This demonstrates the magnitude of the threat timing side channels pose for traffic analysis.

关键词： Timing channel Timing side channel Traffic analysis Privacy Traffic Analysis timing channel Privacy side channel scheduler program traffic patterns digital subscriber lines

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EXTENDED KALMAN FILTERING FOR PICO-SATELLITES ATTITUDE DETERMINATION

EXTENDED KALMAN FILTERING FOR PICO-SATELLITES ATTITUDE DETER...

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IEEE Canadian Conference on electrical and computer engineering

作者： Mohamed Temam Nasri Witold Kinsner Cognitive Systems Laboratory Department of Electrical and Computer Engineering University of Manitoba Winnipeg Manitoba Canada

ISBN: (纸本)9781479900312

The extended Kalman filter (EKF) algorithm has been applied widely in orbital guidance and navigations problems for mini- and micro-satellites. This paper evaluates the performance and computational complexity of EKF for smaller satellites. The impact of some limitations, including low power and computing capabilities on the implementation of EKF in smaller satellites is also addressed. The filter formulation is based on a kinematics model propagated with three-axis rate integrating gyros, where the attitude is parameterized using quaternions. A multiplicative quaternion-error approach is used to define the attitude error, which ensures that quaternion normalization is maintained. The results indicate that the EKF is sensitive to initial conditions. Using TRIAD algorithm to determine initial conditions, the filter converges after 50 minutes with an average error of 1.5°, but may diverge for extreme cases. The time and space complexities of EKF have also been estimated to be O(n~3) and O(n~2), respectively.

关键词： Extended Kalman filter (EKF) pico-satellites attitude determination computational complexity of EKF

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