Image fusion performance evaluation indices are studied in this paper, and an objective measure is presented, which is the normalized edge mutual information (NEMI). NEMI is defined in view of information transmission...
详细信息
This paper describes the principle of positioning and the system composition of the GPS-RTK satellite positioning technology, introduces the application of this technology in positioning construction of steel casing a...
详细信息
The construction situation of Sutong Bridge is complicated and difficult. The pier foundation of main tower of this bridge is the largest scale group piles/bearing platform of world. In this article, the plan of const...
详细信息
the Remote on-line Management System of Siban Gigabyte motherboard was designed, On the foundation of manual management, the On-line inquiry function, the electronic administration sheet function and the overtime stor...
详细信息
the Remote on-line Management System of Siban Gigabyte motherboard was designed, On the foundation of manual management, the On-line inquiry function, the electronic administration sheet function and the overtime storage reminds function were added. Practice proved that the time of customer's withdraw became more reasonable, the efficiency of service's rework was raised greatly. Both sides are satisfied with this system.
Energy conservation for a sensor node is one of the key challenges in wireless sensor networks (WSN). In this paper the optimal energy optimization problem for the sensor node is concerned, and the objective is to obt...
详细信息
ISBN:
(纸本)9781612844879
Energy conservation for a sensor node is one of the key challenges in wireless sensor networks (WSN). In this paper the optimal energy optimization problem for the sensor node is concerned, and the objective is to obtain the long-term average maximum throughput per energy consumption. First, we analyze the energy conservation optimization problem in the background of cross-layer adaptive transmission over fading channels. For less energy consumption on data sensing, receiving and sending we refer to a mechanism which dynamically turns on or off different components, adjusts transmit power and modulation level of the sensor node while maintaining required performance. Then, the problem is modified by introducing dynamic power management (DPM) technique and modeled as an average reward Markov decision process (AR-MDP). Combined with simulated annealing (SA), Q learning algorithm is proposed to solve the energy conservation optimization problem with average performance criteria. Finally, the simulation results show that the approach in this paper is more efficient than always on policy or random policy. As the approach the energy consumption can be well balanced while the throughput of the sensor node doesn't decrease significantly.
This article discuss firstly the research and pratice of temperature controltechnology of massive concrete in large-scale cushion cap in Baishazhou Yangtze bridge at Wuhan and Sutong bridge, then demonstrates that th...
详细信息
The static nonlinear feature of narrow band Radio Frequency Power Amplifier (RF PA) is made as the fingerprint of wireless communication emitter. RF PA with unknown input can be looked as a static nonlinear Hammerstei...
详细信息
The static nonlinear feature of narrow band Radio Frequency Power Amplifier (RF PA) is made as the fingerprint of wireless communication emitter. RF PA with unknown input can be looked as a static nonlinear Hammerstein model. The process of feature extraction from this model is split into two steps. The first step is signal samples whitening and the second is the estimation of Taylor series' coefficients. The order statistics of the whitening signal samples is monotone. Then the features are estimated through linear regression using least square method. Comparing feature vectors of 4 RF power amplifiers results in that the proposed algorithm is effectively to identification different type of RF power amplifiers.
Natural image classification is an important task. SIFT descriptors and bag-of-visterms (BOV) method have achieved very good results based on local image representation. Many studies use the support vector machine to ...
详细信息
This paper presents the robust of Sliding Mode controller according to parameters change and worst signal noise. Mathematical procedure for calculating the values of the gains of Sliding Mode controller (SMC) and equa...
详细信息
Radial basis function (RBF) network is one of the significant neural networks. It has been used successfully in various fields. But in RBF network approximation algorithm, the initial value of the network weights, Gau...
详细信息
暂无评论