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To maximize the efficiency of wave attenuation of anti-wave forest with low cost, a multi-objective optimal layout selection model using improved fuzzy entropy was proposed. A new entropy weight calculation formula was introduced in the fuzzy entropy to improve the reliability of entropy weight. The effect of each vegetation factor was quantified and analyzed. The law of wave attenuation was revealed...
To solve the complexity and difficulty of tree species selection of wavebreak forest in a certain area effectively, an improved fuzzy optimum selection model (FOSM) using the tree species suitability multi-index system is proposed for wavebreak forest in flood control planning. And a new relative membership degree formula is introduced in the FOSM. Through the improved FOSM, the tree species recommended...
A wideband and wide-angle scanning circularly polarized array with low profile is introduced. The proposed array is composed of three annular sub-arrays with tilted elements and a ripple-shaped ground plate. A case with 64 elements is designed and simulated. The simulation results demonstrates that array scanning gain fluctuations less than 2.26 dB at the center frequency and 3 dB in the operation...
This paper presents a wideband circularly polarized array with improved gain and sidelobe level by using bowl-shaped reflector with high impedance surface (HIS). The proposed array is composed of four crossed dipole elements which have a sequentially rotated configuration. The high impedance surface is realized by applying corrugated surface to the bowl-shaped reflector. The simulation results show...
A triple-band antenna by combining the meander-line structure with an obtuse-angle bowtie monopole radiator is presented in this paper. The operating mechanism of the proposed antenna at the first operating frequency band is elucidated by treating the meander-line structure as a cascade model of three short-circuited branches. The experimental prototype of the proposed antenna is fabricated, and the...
We investigate the problem of distributed source seeking with velocity actuated and force actuated vehicles by developing distributed Kiefer-Wolfowitz algorithm. First, based on stochastic approximation algorithm with expanding truncations, we present the distributed Kiefer-Wolfowitz algorithm, in which two noisy observations of each agent's objective function is used to estimate its gradient and...
Web browsing is an activity that billions of mobile users perform on a daily basis. Battery life is a primary concern to many mobile users who often find their phone has died at most inconvenient times. The heterogeneous multi-core architecture is a solution for energy-efficient processing. However, the current mobile web browsers rely on the operating system to exploit the underlying hardware, which...
In this paper, the switching performance of monolithically integrated Si-GaN cascoded rectifiers is presented. The reverse recovery charge of the cascoded rectifier is 86.2% less than that of a Si fast recovery diode (FRD), which reveals great potential of cascoded rectifiers for high-speed power switching applications. Moreover, the double pulse tests are carried out for the cascoded rectifiers formed...
Since the GSM-R (Global System for Mobile communications-Railways) antenna located on the train roof is very close to the catenary, it often receives electromagnetic transient disturbance due to sliding contact between the pantograph and the catenary. In order to suppress this transient noise and improve the reliability of communication, a transient noise suppressing method for radio signals based...
Traditional image coding standards (such as JPEG and JPEG2000) make the decoded image suffer from many blocking artifacts or noises since the use of big quantization steps. To overcome this problem, we proposed an end-to-end compression framework based on two CNNs, as shown in Figure 1, which produce a compact representation for encoding using a third party coding standard and reconstruct the decoded...
A target location algorithm based on seismic sensors is proposed in this paper. The targets moving on the ground is located by using the positioning method based on TDOA (Time Difference of Arrival). This location algorithm draws on the Chan and the Taylor location algorithm's strength, has achieved low complexity and high convergence speed. The simulation results show that the proposed location algorithm...
One major challenge with integrating photovoltaic (PV) systems into the grid is that its power generation is intermittent and uncontrollable due to the variation in solar radiation. An accurate PV power forecasting is crucial to the safe operation of the grid connected PV power station. In this work, a combined model with three different PV forecasting models is proposed based on a rough set method...
Submarine detection plays an important role in modern wars. As a potential technique, synthetic aperture radar (SAR) is used to detect submarines through detecting their wakes on the sea surface. This requires the images of submarine wakes under all kinds of conditions. However, it is difficult to acquire these images by field experiment. In this paper, we propose a method to simulate SAR images of...
Several users observing independent random variables exchange error-free messages with one another and a central receiver, the central estimation officer (CEO), with the aim of enabling the CEO to compute either the maximum across users (the max), or a a user attaining this maximum (the arg max) for each element of their local observation sequences. The fundamental lower bound on the information exchange...
In this paper, stochastic approximation algorithm with expanding truncation is developed to solve source seeking problem with velocity actuated and force actuated vehicles. We give necessary and sufficient conditions for the convergence of the algorithm and compared with the existing work, a larger amount of measurement noise can be considered. At each iteration, only two observations are required...
In order to make sure the injured person can get rescue without delay, A vehicle rescuing information interaction system was designed, which consists of two parts, vehicle embedded system and rescue center terminal. This system works on a core control chip S3C2440. It uses GPS technology to let the Latitude and Longitude information about a car is acquired, to monitor a moving car's angular speed...
A hybrid approach integrating a Taguchi orthogonal table with an irregular design of experiments (DOE) method was proposed for selecting an optimal material structure of blue organic light emitting diodes in order to achieve multi-objective quality characteristics of devices. Analysis of variance (ANOVA) was adopted to identify significant factors before regression models were obtained. Finally, an...
The problem of function computation arises in in many practical scenarios, such as query computation in distributed databases. In such scenarios, it is often possible to exploit the structure of the function to reduce the amount of information that needs to be exchanged in order to compute it. In a so-called a collocated network, information is exchanged as users take turns sending messages to a sink,...
An increasing number of images in the Internet brings forward a higher requirement on the speed of steganalysis. For the problem of real-time detection of stego images, a rapid images steganalysis method based on identifiable features is proposed, where the identifiable features are specific character sequences left in stego images by steganography tools. The stego and cover images are distinguished...
An increasing number of images in the Internet brings forward a higher requirement on the speed of steganalysis. For the problem of real-time detection of stego images, a rapid images steganalysis method based on identifiable features is proposed, where the identifiable features are specific character sequences left in stego images by steganography tools. The stego and cover images are distinguished...
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