中国开放科研知识云: 检索

Effect of heat collecting method on performance of all-glass vacuum tube solar water heater 期刊论文
Taiyangneng Xuebao/Acta Energiae Solaris Sinica, 2021, 卷号: 42, 期号: 1, 页码: 103-111
作者: Li, Jinping; Ye, Heli; Deng, Congcong; Huang, Juanjuan; Wang, Chunlong

收藏 | 浏览/下载：17/0 | 提交时间：2021/03/02

Efficiency Electron tubes Glass Natural convection Water heaters Wind Average efficiencies Compare and analyze Forced circulations Heat collection Heat collectors Horizontal tubes Lanzhou cities Natural circulation

Study on the Control of Cavitation of Axial Flow Pump With Discontinuous Bulges on the Back of Blades 期刊论文
Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics, 2021, 卷号: 42, 期号: 1, 页码: 96-105
作者: Zhao, Wei-Guo; Zhao, Fu-Rong; Lu, Jia-Jia

收藏 | 浏览/下载：8/0 | 提交时间：2021/03/02

Axial flow Computer software Kinetic energy Kinetics Pumps Turbulent flow Cavitation performance Compare and analyze High pressure area Impeller channels Low-pressure area Streamline distributions Tip vortex cavitations Turbulent kinetic energy

Comparison of the performance improvement for the two novel SOI-tunnel FETs with the lateral dual-gate and triple-gate 期刊论文
Microsystem Technologies, 2018
作者: Wei, Sufen; Zhang, Guohe; Geng, Li; Shao, Zhibiao; Yang, Cheng-Fu

收藏 | 浏览/下载：10/0 | 提交时间：2019/11/26

Band to band tunneling Compare and analyze Modulating effect Off-state current On state current Performance improvements Tunnel field-effect transistors (TFET) Tunneling barrier

Analyze and Compare the Function of Several Common Operators in Feature Extraction on Cotton Diseases 期刊论文
PROCEEDINGS OF THE 2017 7TH INTERNATIONAL CONFERENCE ON MECHATRONICS, COMPUTER AND EDUCATION INFORMATIONIZATION (MCEI 2017), 2017, 卷号: 75, 页码: 467-470
作者: Sun, Jianchi; Yuan, Cao*

收藏 | 浏览/下载：2/0 | 提交时间：2019/12/27

Feature extraction Cotton leaf Analyze and compare Operator

Alternating stress dynamics analysis of harmonic gear flexible wheel (EI CONFERENCE) 会议论文
2012 International Conference on Electrical Insulating Materials and Electrical Engineering, EIMEE 2012, May 25, 2012 - May 27, 2012, Shenyang, Liaoning, China
Han X.; Bai Y.; Li M.; Jia H.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

This article is the study of alternating stress of flexible wheel in harmonic gear drive system. Firstly then Finally according to elasticity theory to theoretically analyze flexible wheel stress based on the basic principle of sub-structure modal synthesis method based on the dynamics simulation use the software of UG to analyze the alternating stress simulation results of flexible wheel and compare theoretical results and simulation results to come conclusion. The results show that: altering stress simulation results of flexible wheel are coincident with theoretical simulation results PATRAN and ADAMS to carry out co-simulation have a deeper understand the stress change trend in the drive process of flexible wheel lay a foundation for further carrying out dynamics simulation of harmonic gear drive system. (2012) Trans Tech Publications Switzerland.

The design and research for the shaping of the LDA (EI CONFERENCE) 会议论文
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Xu X.; Wang L.; Zhou M.

收藏 | 浏览/下载：13/0 | 提交时间：2013/03/25

We analyze the structure defects of the LDA and compare the coupling mode of the LDA and a fibers array to the coupling mode of the LDA and a single fiber. We also design several new coupling methods of laser and fibers and discuss the advantages and the disadvantages of them. 2011 IEEE.

Research on the effect of clamp on rudder lift-drag characteristics (EI CONFERENCE) 会议论文
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
Zhang N.; Yang C.; Jia H.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

The paper introduce structured grid division use CFD numerical simulation and FLUNET software to conduct the simulation calculation for flow field of high-speed vehicle which study the clamps of high-speed vehicle control helms how to affect the lift-drag characteristics of it. To better illustrate the problem we use the canard configuration vehicle that efficiency of control is higher. This paper calculate lift-drag characteristics of outer surface of canard helm that with or without clamps in the condition of subsonic transonic and supersonic then compare the lift-drag characteristics of in different conditions and analyze from the perspective of flow field. 2011 IEEE.

The research and implementation of the method of the Photoelectric theodolite simulation (EI CONFERENCE) 会议论文
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Shuang C.; Li Y.; Yu G.; Wang J. J.; Lu M.

收藏 | 浏览/下载：13/0 | 提交时间：2013/03/25

This paper advances a method to develop simulation system which is based on VC++ 6.0 and MultiGen Vega and takes the mathematical model of Photoelectric theodolite and target as the theoretical basis. We modeling the simulation system by MultiGen Creator and then drive the simulation models through MultiGen Vega program under the circumstance of VC++6.0 simulate the work situation of theodolite to track the Air target achieve the development of simulation program. Finally analyze the results of simulation and compare it with the Actual data which is very important for the research of the real system. 2010 IEEE.

A performance comparison of the ad hoc network protocols 会议论文
作者: Feng, Qian; Cai, Zhongmin; Yang, Jin; Hu, Xunchao

收藏 | 浏览/下载：3/0 | 提交时间：2019/12/18

Ad hoc protocols Compare and analyze Comparison result Large-scale network Network simulation Performance analysis Performance comparison Performance evaluations

High-accuracy real-time automatic thresholding for centroid tracker (EI CONFERENCE) 会议论文
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Zhang Y.; Wang Y.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

Many of the video image trackers today use the centroid as the tracking point. In engineering we can get several key pairs of peaks which can include the target and the background around it and use the method of Otsu to get intensity thresholds from them. According to the thresholds it give a great help for us to get a glancing size a target's centroid is computed from a binary image to reduce the processing time. Hence thresholding of gray level image to binary image is a decisive step in centroid tracking. How to choose the feat thresholds in clutter is still an intractability problem unsolved today. This paper introduces a high-accuracy real-time automatic thresholding method for centroid tracker. It works well for variety types of target tracking in clutter. The core of this method is to get the entire information contained in the histogram we can gain the binary image and get the centroid from it. To track the target so that we can compare the size of the object in the current frame with the former. If the change is little such as the number of the peaks the paper also suggests subjoining an eyeshot-window we consider the object has been tracked well. Otherwise their height just like our eyes focus on a target if the change is bigger than usual position and other properties in the histogram. Combine with this histogram analysis we will not miss it unless it is out of our eyeshot we should analyze the inflection in the histogram to find out what happened to the object. In general the impression will help us to extract the target in clutter and track it and we will wait its emergence since it has been covered. To obtain the impression what we have to do is turning the analysis into codes for the tracker to determine a feat threshold. The paper will show the steps in detail. The paper also discusses the hardware architecture which can meet the speed requirement. the paper offers a idea comes from the method of Snakes

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