Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Due to the explosive requirement in wireless communication, the wireless radio spectrum is nearly occupied and become more and more congested. VLC is a new technique transferring data through the links of light emitting diodes (LEDs), which are used for illumination simultaneously. It is a green, secure, radiation-free technology with high throughput, regarded as a promising solution to mitigate wireless...
Aiming at the quality inspection of ultrasonic aluminum wire joint, this paper proposes a method of ultrasonic aluminum wire joint quality identification based on PCA and C-SVM. Firstly, extracting the ultrasonic aluminum joint image from the ultrasonic welding element image by applying image morphological operations and image histogram equalization, and then reducing the dimension of the ultrasonic...
This paper addresses the mechanism design of a novel lightweight underwater manipulator. This underwater manipulator has the properties of light weight, small size and uniform mass distribution. Specifically, the implement of every joint and the gripper of the underwater manipulator is presented. Then the forward kinematics model is built based on Denavit-Hartenberg principle, and the inverse differential...
This paper deals with the problem of dynamic hovering of a bio-inspired robot with undulatory fins. First, the mechanism and dynamic model of the underwater robot named RobCutt-II is briefly introduced. Next, an neural network visual servo control is presented to achieve hovering control. In particular, a dual-loop visual hovering control is designed. At first, we analyze the relationship between...
Narrowband blanket jamming is common in satellite navigation systems. To suppress narrowband jamming, this paper proposes an adaptive LMS filtering algorithm in the frequency domain by updating partial weight coefficients. Firstly this paper introduces the model and the implementation means of the algorithm, then performs contrastive analysis on the computational complexity and the convergence speed...
This paper presents the results of combining scatter correction and spectral derivation preprocessing methods with frequency-range optimization to improve the accuracy of blood glucose concentration prediction when using a Partial Least Square Regression model. Using broadband dielectric spectroscopy, absorption spectrums in the frequency range of 500 MHz to 50 GHz were gathered from blood serums...
The adaptive cubature strong tracking information filter(ACSTIF), which combines the strong tracking filter with the variational Bayesian method, has a good performance when the sudden change of state and the unknown variance of measurement noise appear. However, it also remains two problems. Firstly, the iteration of estimating the unknown variance of measurement noise is not very accurate. Secondly,...
By analyzing the chaotic oscillation of the power system, the second-order mathematical model is obtained by simplifying the interconnected two-machine power system model. The nonlinear behavior of the system is analyzed by three aspects, such as: the phase diagram, Lyapunov exponent and bifurcation diagram. Based on passive control theory of nonlinear system, the passive controller is designed which...
Camera motion introduces motion blur, affecting many computer vision tasks. Dark Channel Prior (DCP) helps the blind deblurring on scenes including natural, face, text, and low-illumination images. However, it has limitations and is less likely to support the kernel estimation while bright pixels dominate the input image. We observe that the bright pixels in the clear images are not likely to be bright...
This paper studies visual pattern discovery in large-scale image collections via binarized mode seeking, where images can only be represented as binary codes for efficient storage and computation. We address this problem from the perspective of binary space mode seeking. First, a binary mean shift (bMS) is proposed to discover frequent patterns via mode seeking directly in binary space. The binomial-based...
A method for classifying objects into categories and indexing is proposed to implement object recognition. The relational measurements such as the distance between two points, color comparison is encoded by the attributed relational graph (ARG) representation to provide one-to-one correspondence between models and object features. If the contour is traversed counterclockwise, a sequence can be formed...
Recently, Wireless power Transfer has become a hot issue, because saving wires leads to the improvement of security and convenience. For Wireless power Transfer, the magnetic resonance coupling is a key research technique. It can work over large air gaps with high efficiency. Based on magnetic resonance coupling, in this paper, we study the power transfer efficiency of the Wireless power Transfer...
The measurement of enamel mechanical properties offers great significance for the design, development and evaluation of clinical dental restorative materials. In this paper, resonant ultrasound spectroscopy (RUS) was proposed to measure the full second-order elastic tensor of human enamel specimens, and the mechanical parameters of human enamel, including Young's moduli, shear moduli and Poisson's...
Under the goal of pursuing safety, aero-engine is optimized by using an optimization algorithm to improve its performance and the comprehensive performance of the airplane. A nonlinear programming model is established to optimize the acceleration progress of a certain turbofan engine, where the rotor speed is involved in the objective function. Then, a novel nature-inspired optimization algorithm,...
This paper establishes a robust optimization model and proposes constraint generation algorithm to solve a robust single machine scheduling problem with random release times. The performance criterion of interest is the maximum waiting time (MWT) over all jobs. Unlike the traditional stochastic programming model which requires exact distributions, our robust optimization model needs only the information...
The data in the process of power plant are mostly continuous. Aimed at the problems existing in the discretization of the continuous attributes with associated relationship, a strategy combining k-means clustering algorithm and the degree of compatibility of the decision table was proposed. The degree of compatibility was taken as judgment conditions to determine whether a new cluster type is added,...
The high energy consumption has become one bottleneck in the development of the data centers (DCs), where the main energy consumers are the cooling system and the servers. Therefore, the joint optimization for the energy efficiency of the cooling system and the servers is a crucial problem, while most of previous works on energy saving only studies one of these two components in an isolated manner...
We investigates a two-echelon supply chain with one risk-natural supplier and one loss-averse retailer where there is one short life cycles product with stochastic demand. The loss-averse preference is adopted to describe the retailer's decision-making behavior. We introduce a combined contract by organically combining the quantity flexibility contract and the buy-back contract with this issue. It...
Inter-Component Communication (ICC) enables developers to create rich and innovative applications in Android platform. However, some privacy problems occur because of the interactions among multiple components. Since the flow of sensitive data across components may be legal or malicious, it is necessary to perform a precise ICC analysis to identify the malicious flow of sensitive data. In this paper,...
Caching popular contents at mobile devices, assisted by device-to-device (D2D) communications, is considered as a promising technique for mobile content delivery. It can effectively reduce backhaul traffic and service cost, as well as improving the spectrum efficiency. However, due to the selfishness of mobile users, incentive mechanisms will be needed to motivate device caching. In this paper, we...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.