中国科学院机构知识库网格系统: 检索

Rumination and the default mode network: Meta-analysis of brain imaging studies and implications for depression 期刊论文 OAI收割
NEUROIMAGE, 2020, 卷号: 206, 页码: 9
作者: Zhou, Hui-Xia; Chen, Xiao; Shen, Yang-Qian; Li, Le; Chen, Ning-Xuan

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收藏 | 浏览/下载：59/0 | 提交时间：2020/02/29

Rumination Depression Default mode network Core regions Dorsal medial prefrontal cortex subsystem

A Case of On-Chip Memory Subsystem Design for Low-Power CNN Accelerators 期刊论文 OAI收割
IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, 2018, 卷号: 37, 期号: 10, 页码: 1971-1984
作者: Wang, Ying; Li, Huawei; Li, Xiaowei

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收藏 | 浏览/下载：38/0 | 提交时间：2019/12/10

Convolutional neural network (CNN) deep learning low power memory subsystem

Integrated optimization method for coupling parametrization design of complex space system (EI CONFERENCE) 会议论文 OAI收割
2012 3rd International Conference on System Science, Engineering Design and Manufacturing Informatization, ICSEM 2012, October 20, 2012 - October 21, 2012, Chengdu, China
作者: Han C.-S.; Wen M.

收藏 | 浏览/下载：138/0 | 提交时间：2013/03/25

This paper investigates the problem of optimization method for coupling parametrization design of complex space system. The objective is to develop an integrated optimization framework to design complex space system. An improved collaborative optimization (ICO) strategy for complex design using hybrid optimization algorithm is proposed which associates genetic algorithm (GA) with tabu search (TS). A multi-objective function with penalty terms for the systemlevel optimization and a relax factor for the subsystem optimization are adopted which can avoid unsolvability or converging difficulty. The results demonstrate the applicability and effectiveness of the proposed design methodology. 2012 IEEE.

Design of semi-physical simulation for small satellite by virtual display (EI CONFERENCE) 会议论文 OAI收割
2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011, September 23, 2011 - September 25, 2011, Hefei, China
Xu K.; Lv Y.; Jin G.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

Semi-physical simulation of attitude control system is the more synthetically test and verify for designing of small satellite control system. It is an important means of small satellite development. However the results of current semi-physical simulation system have a lot of non-intuitive. Compare with the actual environment the simulation environment still has striking disparity. So the shortcomings affect precision of simulation. Based on the virtual display technology the group semi-physical simulation system has been constructed for attitude control of small satellite due to the combination with xPC real-time environment the simulation computer high-precision single-axis air-bearing turntable reaction wheel air thrust device fiber gyroscopes sensors synchronizer power subsystem and wireless devices virtual display computer etc. Semi-physical simulation achieved the visual simulation in orbit and tracked new information of virtual environment of space into real-time simulation computer. Simulation results show that the simulation system for real-time attitude and orbit position of small satellite semi-physical simulation has an excellent display effect. At the same time Real-time transfuse of orbit information provides a more accurate space environment simulation. The simulation system of small satellite attitude control to design and evaluate the more direct and convenient. (2012) Trans Tech Publications Switzerland.

EMC analysis of weak signals acquisition devices in complicated electromagnetic environment (EI CONFERENCE) 会议论文 OAI收割
2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011, July 27, 2011 - July 30, 2011, Harbin, China
作者: Ji Q.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

This article introduce a device integrating many functions. Because structure of electron device is not same as others and thinking of EMC is scarcity subsystems can be interfered each other. After analyzing electromagnetic influence among subsystems studying interference sensitivity device and coupling circuitry we find this device's weak link of anti-interference. Through grounding shielding filtering each subsystem can work normally and electromagnetic influence achieve least also. 2011 IEEE.

The design of real-time monitoring the electromechanical actuator operation state based on the CANoe (EI CONFERENCE) 会议论文 OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
作者: Zhang J.; Wu D.; Zhang J.; Zhang J.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

In order to realize the real-time state data monitor of the electromechanical actuator(EMA) the EMA and other subsystem establish a ground half physical experiment simulation platform based on the CAN bus. The CANoe software decodes the received EMA CAN data and showes the result in the image window. The decoding data contains the EMA current motor operation state EMA angle and etc. Through these real-time display data the EMA operation state could be monitored and the EMA failure could be located fastly. 2011 IEEE.

Optical design of two-step zoom system under visible light for a certain theodolite 会议论文 OAI收割
2011 international conference on electronics and optoelectronics, iceoe 2011, dalian, china, july 29, 2011 - july 31, 2011
作者: Zhou Ke; YangJianfeng; ZhouKe

收藏 | 浏览/下载：15/0 | 提交时间：2012/07/09

Optical design Zoom system Theodolite Subsystem

Adaptive pyramid mean shift for global real-time visual tracking 期刊论文 OAI收割
IMAGE AND VISION COMPUTING, 2010, 卷号: 28, 期号: 3, 页码: 424-437
作者: Li, Shu-Xiao; Chang, Hong-Xing; Zhu, Cheng-Fei

收藏 | 浏览/下载：21/0 | 提交时间：2015/08/12

Global visual tracking Fast mean shift Adaptive level Kernel-based tracking Tracking and pointing subsystem

Modular aircraft simulation platform based on simulink (EI CONFERENCE) 会议论文 OAI收割
2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010, August 4, 2010 - August 7, 2010, Xi'an, China
Chen C.-Q.; Ji Y.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

Aircraft simulation platform is the most important supporting technology in the aircraft development process. This simulation platform can be used for validating the design of subsystem and also it provides the necessary data for the Aircraft design. Wind has great impact on the flight parameter. In order to accurately simulate the wind model and calculate the flight parameters a simulation modeling method for flight parameter simulation platform under wind field environment is established. Firstly the various sub-systems which affecting flight parameters are analyzed some mathematical models of the flight parameter simulation platform is established. Secondly the atmospheric wind field is studied to analyze the impact on its trajectory. Then the model is built in the Simulink toolbox in the Matlab which is based on the principles of hierarchy and modularity using C MEX S-function for the complex kinetic equations. Finally when the models have been established encapsulating models for several subsystem and assembling them for the Aircraft simulation platform based on the unified interface. The simulation tests (including the performance test of a certain gliding Aircraft the wind influence test of a certain uncontrolled aircraft) prove the simulation capability of the platform and its calculating step can reach 1 ms. Comparing simulation with field test data of a certain uncontrolled aircraft it shows that the relative deviation of range is 0.47% the relative deviation of maximal altitude is 2.1%. Taking relevant standards as a reference standard it is demonstrated the platform is reliable meets the engineering accuracy requirements. 2010 IEEE.

Design of ground-based physical simulation system for satellite-borne TDI-CCD dynamic imaging (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者: Zhang L.; Zhang L.; Sun Z.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

As we know the existence of image motion has a bad effect on the image quality of satellite-borne TDI CCD camera. Although many theories on image motion are proposed to cope with this problem few simulations are done to justify the proposed theories on ground. And thus in this paper a ground-based physical simulation system for TDI CCD imaging is developed and specified which consists of a physical simulation subsystem for precise satellite attitude control based on a 3-axis air bearing table and an imaging and simulation subsystem utilizing area-array CCD to simulate TDI CCD. The designed system could realize not only a precise simulation of satellite attitude control whose point accuracy is above 0.1 and steady accuracy above 0.01/s but also an imaging simulation of 16-stage TDI CCD with 0.1s its integration time. This paper also gives a mathematical model of image motion of this system analogous with satellite-borne TDI CCD and detailed descriptions on the principle utilizing area-array CCD to simulate TDI CCD. It is shown that experiment results are in accordance with mathematical simulation and that the image quality deteriorate seriously when the correspondence between the image velocity and signal charges transfer velocity is broken out which suggest not only the validity of the system design but also the validity of the proposed image motion theory of TDI CCD. 2010 SPIE.