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In this paper, we study relations ranking and object classification for multi-relational data where objects are interconnected by multiple relations. The relations among objects should be exploited for achieving a good classification. While most existing approaches exploit either by directly counting the number of connections among objects or by learning the weight of each relation from labeled data...
This paper focuses on the systematic design and development of an optimized embedded system platform from ground up to handle special real-time requirements of control applications. An embedded system is usually embedded as a part of a complete device including hardware and mechanical parts, and both the hardware system and the software system are tailored and optimized to realize specific functions...
In this paper, we proposed an image-based rendering method based on the block sparsity of epipolar plane image(EPI). This method considers the structural similarity and block sparseness features of scene signal described by EPI model, which makes it possible to estimate approximately original signal with less measured values, and reduces the complexity of signal sampling and processing. First, we...
In this paper, finite-time synchronization for delayed complex-valued bidirectional associative memory (BAM) neural networks is investigated. Based on the finite-time stability and some inequality techniques, a synchronization criterion is provided to guarantee that the drive-response systems achieve synchronization in finite time, and the settling time can be estimated effectively. Meanwhile, a suitable...
This paper presented a numerical simulation of an electrochemical seismometer, which provided an effective approach to study its transfer functions. The fluid-solid coupling model was firstly used in this paper to establish the link between the external vibrations and the internal velocities of the liquid inertial mass of the electrochemical seismometer. Some key parameters in the numerical simulation...
This paper presents a MEMS based electrochemical seismic sensor with force-balanced negative feedback where the bandwidth of the proposed device was extended from 7–20 Hz to 0.1–50 Hz. The quantified sensitivity of 3227 V/ (m/s) was 161.4 times greater than the commercial moving-coil seismic sensor in the low frequency domain. The proposed seismic sensor may be widely used as a promising seismic detecting...
In this paper, based on Unreal Engine 4 (UE4) Unmanned Aerial Vehicle (UAV) simulator (AirSim), through AirLib, DroneServe, DroneShell and other modules in AirSim, using window10, 64-bit operating system, Intel Xeon E5-2620 v4 eight cores Dual CPU and Nvidia GeForce GTX 1080 Ti (11263MB / Nvidia) dual graphics card, a virtual reality platform is constructed for UAV deep learning. The platform displays...
This paper is concerned with the stability analysis of networked control problems for polynomial systems. Owing to existing network-induced random delays of the forward and feedback communication links in a direct-drive control system, the input signals have time-varying delays. Based on the Lyapunov functional and by utilizing the Jensen inequality technique, the controller can be computed in terms...
This paper presents a 2-point algorithm for relative pose estimation of a monocular camera mounted on a ground vehicle. Specifically, the geometric model is developed by combining two-view geometry with planar motion constraint. Based on the proposed model, the relative camera pose information can be estimated efficiently with at least 2 feature correspondences. Besides, the proposed algorithm can...
This paper focuses on nonlinear parameter identification of an equivalent circuit model for lithium-ion batteries (LiBs). A Thevenin's model is considered, which consists of a voltage source based on the battery's open-circuit voltage (OCV), an Ohmic resistor and two RC circuits connected in series. The objective is to identify all the parameters in the voltage source and circuits at once from the...
A cooperative system for visible light positioning (VLP) and visible light communication (VLC) is proposed based on the spread-spectrum plugin of optical identification (OPID). By keeping the existing VLC frame structure untouched, two different implementation schemes were designed by adding the location information field into the communication information field for VLP applications. It is deemed...
Physical Unclonable Functions (PUFs) are emerging as an important building block in hardware security. It has been widely used in key generation and authentication. However, Strong PUFs are vulnerable to the Machine Learning (ML) attack by modeling the challenge-response pairs (CRPs) behavior. The traditional resistant methods based on non-linear blocks (e.g. XOR) have a negative impact on the reliability...
Inter-symbol interference (ISI) in visible light communication (VLC) systems has been considered as a major problem which seriously deteriorates system performance. Constant modulus algorithm (CMA) is a widely adopted blind equalization scheme to eliminate ISI in practice due to its computational simplicity and effectiveness. This paper proposed an initialization scheme for CMA based on received signal...
We experimentally demonstrated a non-orthogonal multiple access (NOMA) scheme in combination with single carrier frequency division multiplexing (SCFDM) for visible light communications (VLC), which in principle could provide high spectral efficiency, high tolerance against multi-path and a lower peak-to-average ratio (PAPR). Compared with orthogonal frequency division multiplexing (OFDM) based NOMA,...
In this paper, we present a novel channel model for indoor visible light communication (VLC) system with specular reflection. In contrast to the previous indoor visible light communication simulation models, our model is not restricted to diffuse reflection, with specular reflection considered. The simulation environment is set up in MATLAB and our model is capable of obtaining several channel characteristics...
Scientific workflow usually needs to be performed in multiple collaborative datacenters for the requirement of accessing community-wide resources. However, the movements of initial input data and intermediate data across geo-distributed datacenters would hinder efficient execution of large-scale dataintensive scientific workflows. In this paper, a novel scheduling approach based on graph partition...
This paper proposes a right-circle flexural hinge design for enlarging the displacement of bridge-type mechanisms as an alternative to the commonly used inner output type. The proposed design uses the outer side as the output so that it is suitable for some engineering applications with output force. Based on the elastic beam theory, a formula for the right-circle displacement amplification ratio...
We propose and demonstrate a compact and high-resolution optical orbital angular momentum (OAM) sorter that consists of a quadratic fan-out mapper and a dual-phase corrector positioned in the pupil plane and the Fourier plane respectively. The novel scheme paves the way for the miniaturization and integration of high-resolution OAM sorters.
We propose an experimental demonstration of visible light communication (VLC) based on interleave division multiple access (IDMA), which offers low peak to average power ratio, low complexity, high robustness against multiple access interference and burst error.
We have demonstrated a long distance distributed vibration fiber-optic sensing system based on phase-sensitive optical time-domain reflectometer (φ-OTDR). Without any additional components, vibration detection utilizing heterodyne detection and digital coherent detection is successfully demonstrated over a 50-km-long optical fiber and the external disturbance signal simulated by PZT is well restored...
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