中国科学院机构知识库网格系统: 检索

Destabilization of low-frequency modes (LFMs) driven by a thermal pressure gradient in EAST plasmas with q(min) <= 2 期刊论文 OAI收割
NUCLEAR FUSION, 2022, 卷号: 62
作者: Xu, Ming; Ma, Ruirui; Xu, Liqing; Li, Yingying; Zhao, Hailin

|

收藏 | 浏览/下载：39/0 | 提交时间：2022/12/23

low-frequency mode double tearing mode kinetic ballooning mode thermal pressure gradient

Underwater Low-Frequency Sound Absorbing Metamaterials Based on Wave-Mode Transformation and Local Resonance Mechanism 期刊论文 OAI收割
ACTA PHYSICA POLONICA A, 2021, 卷号: 140, 期号: 5, 页码: 455-462
作者: Zhang, Han; Hao, Pengxiang; Gao, Yang; Cheng, Yong; Li GZ(李广增)

|

收藏 | 浏览/下载：21/0 | 提交时间：2022/02/17

sound-absorbing metamaterials wave-mode transformation local resonance low-frequency sound absorption

Breakdown of the striatal-default mode network loop in schizophrenia 期刊论文 OAI收割
SCHIZOPHRENIA RESEARCH, 2015, 卷号: 168, 期号: 1-2, 页码: 366-372
作者: Wang, Xiangpeng; Li, Fenghua; Zheng, Hanfeng; Wang, Weihong; Zhang, Wenwen

收藏 | 浏览/下载：47/0 | 提交时间：2015/12/07

Schizophrenia Striatum Default mode network Granger causality analysis Amplitude of low frequency fluctuation Effective connectivity

Tokamak Plasma Flows Induced by Local RF Forces 期刊论文 OAI收割
PLASMA SCIENCE & TECHNOLOGY, 2015, 卷号: 17
作者: Chen Jiale; Gao Zhe

|

收藏 | 浏览/下载：38/0 | 提交时间：2020/10/26

TOROIDAL ROTATION GENERATION DRIVEN TRANSPORT INJECTION low hybrid wave (LHW) ion cyclotron radio frequency (ICRF) mode-conversion plasma rotation plasma flow RF force

Laser pulse coded signal frequency measuring device based on DSP and CPLD (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, May 24, 2011 - May 26, 2011, Beijing, China
作者: Zhang H.-B.; Wang T.-F.; Guo R.-H.; Li Y.; Li Y.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

Laser pulse code is an anti-jamming measures used in semi-active laser guided weapons. On account of the laser-guided signals adopting pulse coding mode and the weak signal processing it need complex calculations in the frequency measurement process according to the laser pulse code signal time correlation to meet the request in optoelectronic countermeasures in semi-active laser guided weapons. To ensure accurately completing frequency measurement in a short time it needed to carry out self-related process with the pulse arrival time series composed of pulse arrival time calculate the signal repetition period and then identify the letter type to achieve signal decoding from determining the time value number and rank number in a signal cycle by Using CPLD and DSP for signal processing chip designing a laser-guided signal frequency measurement in the pulse frequency measurement device improving the signal processing capability through the appropriate software algorithms. In this article we introduced the principle of frequency measurement of the device described the hardware components of the device the system works and software analyzed the impact of some system factors on the accuracy of the measurement. The experimental results indicated that this system improve the accuracy of the measurement under the premise of volume real-time anti-interference low power of the laser pulse frequency measuring device. The practicality of the design reliability has been demonstrated from the experimental point of view.

Multi-parameters decoupling method with Lamb wave sensor for improving the selectivity of label-free liquid detection (EI CONFERENCE) 会议论文 OAI收割
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11, June 5, 2011 - June 9, 2011, Beijing, China
作者: Zhou L.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

The anti-symmetric modes (A01 mode for low frequency A 03 mode for high frequency) and symmetric modes (S0 mode) produced by Lamb wave sensor are used to detect multi-parameters of a liquid such as its density sound velocity and viscosity. These modes are found to be very different to the parameters. For example the A01 mode is very sensitive to the liquid's density but the A03 mode is sensitive to its sound velocity. The measurements of the attenuation with S0 mode can give out liquid's viscosity after its density been determined by A 01 mode. That could be a way to distinguish an unknown liquid with high sensitivity or to solve the problem of the selectivity of label free detection on biosensors. 2011 IEEE.

The reflector bracket mirror structure optimization and design of the IR warring system (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011, July 29, 2011 - July 31, 2011, Sanya, China
作者: Wang B.; Wang B.

收藏 | 浏览/下载：21/0 | 提交时间：2013/03/25

This paper introduced a kind of reflector mirror support structure of IRST system. Thescanning reflector mirror support frame material is Ly2 aluminum under the principle of the suited ofmaterial expanding quotient. The support form of the reflector was talked and the system bracketstructure was designed following the requests of the certain complex IRST. The bracket wasoptimized and analyzed under the best structure quality and the least moment of inertia and thebellowing of bracket plane thickness mode frequency restriction and deadweight restriction. Fromthe result we can see that the bracket mass can reduce from 0.73kg to 0.49kg and the moment ofinertia can reduce from 0.0109kg2 to 0.0056 kg2 under the first precondition of the structure modefrequency being low and the biggest transmogrification being teeny. The base frequency and intensionof the complex IRST system can be indicated well after the finite element analysis static checking. (2011) Trans Tech Publications Switzerland.

Low-frequency vibrational modes of benzoic acid investigated by terahertz time-domain spectroscopy and theoretical simulations 会议论文 OAI收割
international symposium on photoelectronic detection and imaging 2011: terahertz wave technologies and applications, beijing, china, may 24, 2011 - may 26, 2014
作者: FanWen-Hui

收藏 | 浏览/下载：32/0 | 提交时间：2012/07/09

Low-frequency vibrational mode THz-TDS DFt MP2 Benzoic acid

Research on station mode for attitude determination of multiple targets (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computational and Information Sciences, ICCIS2010, December 17, 2010 - December 19, 2010, Chengdu, Sichuan, China
作者: Zhao L.; Wang J.; Li M.

收藏 | 浏览/下载：38/0 | 提交时间：2013/03/25

A key problem of attitude determination system is how to locate CMOS cameras and deal with relations among them. In this paper several kinds of multi-CMOS station mode are introduced. Fundamental principles and classification of station mode directly affect on measurement parameters of system. No matter what mode is designed the ultimate goal is to extend Effective Viewing Field (EVF) increase capture ratio of objects and increase measurement precision. Station mode introduced in this paper is made of CMOS cameras because of low cost high speed frame frequency and low power consumption CMOS cameras were putted near from object tested. So sequences of image are legible which are convenient for analysis of three dimensional(3D) attitude. 2010 IEEE.

Default-mode network activity distinguishes amnestic type mild cognitive impairment from healthy aging: A combined structural and resting-state functional MRI study 期刊论文 OAI收割
NEUROSCIENCE LETTERS, 2008, 卷号: 438, 期号: 1, 页码: 111-115
作者: Bai, Feng; Zhang, Zhijun; Yu, Hui; Shi, Yongmei; Yuan, Yonggui

收藏 | 浏览/下载：38/0 | 提交时间：2015/11/08

mild cognitive impairment default-mode resting-state voxel-based morphometry low-frequency fluctuation