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Alignment is an important preprocessing step for image information retrieval. With template information, images should be aligned precisely to retrieve information inside. These images may contain repeated characters or radicals, and their textures may be not appropriate for keypoint extractions. In this paper, a novel robust image alignment algorithm is proposed for images with text template using...
The concept and technologies of fractional calculus have been increasingly applied to model and design circuits and electrical elements. In this work, by combining the principle of harmonic balance and equivalent small parameter method, we develop a new method of steady-state analysis for fractional-order DC-DC converters in discontinuous conduction mode (DCM). The effectiveness of the proposed scheme...
Data and energy integrated communication networks (DEINs) have emerged for simultaneously realising both of wireless energy transfer and wireless data transfer by exploiting radio-frequency signals. A heterogeneous DEIN is studied, which consists of both indoor and outdoor user equipments (UEs). In order to characterise the diverse data and energy requirements of UEs, a utility function is defined...
With increasing penetration of renewable energy generators, such as wind doubly-fed induction generators (DFIGs), semiconductor based power converters are getting widespread applications into the traditional power system. Under this trend, future smart grid will become definitely a power electronic converters dominated power system. This change and evolution make it hard to describe the interactions...
Based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) and the feature of Vertical Cavity Surface Emitting Laser (VCSEL) which wavelength scanning range up to several nanometers, the methane sensor system was designed. To verify the characteristic of anti-cross interference, we made some spectroscopy stimulation and experiments to analyze the affects to the methane measurement results of the...
In this paper, we design an all-dielectric metasurface, which can produce a sharp transmission peak due to analogue of electromagnetically induced transparency to realize refractive index sensing. The structure is a periodic lattice of a silicon dumbbell-shaped bar and a silicon ring resonator on the bulk fused silica substrate. The EIT phenomenon of the proposed metasurface and the refractive index...
It is well known that mitochondria are one of the most important organelles found in the majority of cells. In recent years, with the development of scanning electron microscope(SEM), we have had a deeper understanding of the internal structure of the cell. However, obtaining the detection and connection of mitochondria form EM images is still a great challenge. In this paper, the Faster R-CNN algorithm...
This study investigates the impulsive stabilization problem of positive systems with time-varying delays. A new time-varying weighted copositive Lyapunov function is constructed. Sufficient stabilization conditions on the upper and lower bounds of impulsive intervals are established using the convex combination technique. Under the proposed conditions, the positivity and exponential stability of the...
Flooding broadcast is the main way of vehicular node forwarding packets in Vehicular ad-hoc network (VANET). However this way may cause network congestion especially when multiple broadcast nodes send packets to the same receiving node at the same time. In this paper, a Congestion-Aware GPCR Routing Protocol (CA-GPCR) has been proposed to improve the performance of GPCR routing protocol in urban scenarios...
We study the effect of multipath component and bandwidth on the performance of the existing time-reversal(TR) based fingerprinting localization approaches. We find that localization accuracy of these approaches deteriorates with limited bandwidth. To improve the localization performance, we propose a high resolution time reversal approach, i.e., TR-Phase, through jointly considering two unique location-specified...
Aiming at dynamic changes of network topology, high real-time security services and high network load in VANETs, this paper proposes an adaptive TDMA slot allocation strategy based on beacon messages (BMA strategy). BMA strategy makes full use of neighbor nodes' beacon messages, including vehicular direction, position, velocity, etc. Meanwhile, each vehicle establishes neighbor table containing beacon...
In this paper, we analyze and optimize achievable rate for two-way full duplex (TWFD) relay system consisting of two FD source nodes and N FD amplify- and-forward (AF) relays. Each transceiver node is equipped with two antennas, one for receiving and the other for transmitting. And on the basis of conventional relay selection scheme, we propose a joint relay and transmit#x002F;receive (Tx#x002F;Rx)...
Due to the coal mine safety requirements for a new generation of methane sensor in recent years, coal mine methane sensor laser has attracted more and more attention. Based on the principle of laser absorption spectroscopy, mine laser methane sensor was developed, a series of detailed performance test were carried out. Compared with traditional catalytic combustion sensor and infrared sensor, laser...
This paper focuses on the power optimization problem for the max-min fairness of energy efficiency (EE) among cognitive users (CUs) in an underlay massive multiple-input multiple-output (MIMO) cognitive radio network (CRN). We formulate this problem as the maximization of the minimum EE of CUs, subject to their minimum data rate requirements and transmit power constraints. However, the problem is...
As the traditional service robots' artificial intelligence bottlenecks, there is a huge gap between service robots and human intelligence in the cognitive and learning discipline. So the service robots could not be widely applied. As deep learning theory is proposed in 2012, it may lead to a generation leap forward in machine learning discipline, so as to improving the traditional robot's cognitive...
With the rapid increasement of wireless mobile devices, the problem of energy consumption has been gradually exposed to set back the development of future wireless communication. Under this condition, the data and energy integrated communication network (DEIN) has been emerging as a new technique to help wireless devices to collect the energy from the ambient radio-frequency (RF) signal and hence...
In this paper, we designed an optical fiber biosensor for rapid detection of HIgG, which is simple, cost-effective and can be easily fabricated. The average detection time is about 20 minutes. A thin core optical fiber with a length of 2 cm was fused between two segments of single mode optical fibers. The outside surface of the thin core optical fiber was coated with the antibody using the method...
With the rapid development of mobile applications in recent years, there is a strong desire on light weight algorithm for view synthesis using uncalibrated images and limited geometry information. To address this challenge, we propose a Bayesian based view synthesis framework to support the rendering of complex scene with multiple planar structures. In this framework, we integrate image segmentation,...
Local binary patterns (LBP) is a simple and efficient texture description operator, and the improved “uniform” local binary patterns (uLBP) has been proved to be a powerful feature expression for texture classification. However, due to the “0” threshold operation in uLBP, it is sensitive to gray variance resulting from noises and disturbance among classes, which reduces the classification performance...
Bayesian network (BN), an important machine learning technique, has been widely used in modeling relationships among random variables. BN is considered to be suitable for tasks like prediction, classification and cause analysis. In fact, Bayesian network model often preforms better precision than other commonly used algorithm models in classification and prediction. Meanwhile, taking Max-Min-Hill-Climbing...
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