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清华大学 [5]
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Research on a Seepage Monitoring Model of a High Core Rockfill Dam Based on Machine Learning
期刊论文
SENSORS, 2018, 卷号: 18, 期号: 9
作者:
Cheng, Xiang
;
Li, Qingquan
;
Zhou, Zhiwei
;
Luo, Zhixiang
;
Liu, Ming
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2019/12/05
high core-wall rockfill dam seepage
abnormal value judgment
principal component analysis
linear regression
osmometer
Nuozhadu
seepage control model
金融生态环境对银行监管目标的影响研究
期刊论文
2016, 2016
程诚
;
韩廷春
;
CHENG Cheng
;
HAN Ting-chun
收藏
  |  
浏览/下载:4/0
Research on the Comprehensive Evaluation Method and Index System of Power Network Planning
会议论文
作者:
Lian, Haoran
;
Bie, Zhaohong
;
Hu, Yuan
;
Qin, Peng
;
Liu, Yangyang
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2019/11/26
comprehensive index system
network planning
judgment matrix
weakness oriented dynamic assessment method
entropy value
fuzzy analytic hierarchy process
Adoption of 4G Mobile Services from the Female Student's Perspective: Case of Princess Nora University
期刊论文
Malaysian Online Journal of Educational Technology, 2015, 卷号: Vol.3 No.1, 页码: 12-27
作者:
Rawashdeh,Awni
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  |  
浏览/下载:4/0
  |  
提交时间:2019/12/30
Females
Information
Technology
Adoption
Factor
Analysis
Regression
Correlation
Usability
Intention
Student
Attitudes
Use
Studies
Telecommunications
Electronic
Learning
Relevance
Value
Judgment
Models
College
Students
Foreign
Countries
Questionnaires
Statistical
Analysis
Structural
Equation
Models
Extended utility and DEA models without explicit input
期刊论文
JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY, 2014, 卷号: 65, 期号: 8, 页码: 1212-1220
作者:
Yang, Guoliang
;
Shen, Wanfang
;
Zhang, Daqun
;
Liu, Wenbin
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  |  
浏览/下载:1/0
  |  
提交时间:2019/12/17
DEA
DEA without explicit input
value judgment
multiple attribute
utility
What’s the Big Deal? Collection Evaluation at the National Level
期刊论文
Portal: Libraries and the Academy, 2014, 卷号: Vol.14 No.4, 页码: 617-631
作者:
Jurczyk,Eva
;
Jacobs,Pamela
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2019/12/30
National
Standards
Measurement
Techniques
Quality
Assurance
Use
Studies
Library
Research
Evaluation
Methods
Shared
Resources
and
Services
Cooperative
Programs
Library
Development
Library
Materials
Evaluation
Needs
Value
Judgment
User
Needs
Electronic
Libraries
Cost
Effectiveness
Access
to
Information
Evaluation
Criteria
Selection
Tools
Selection
Criteria
Academic
Libraries
Foreign
Countries
“事实-价值”问题的马克思主义解答——兼及对元伦理学的批评
期刊论文
2012
杨松
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  |  
浏览/下载:2/0
  |  
提交时间:2016/05/17
事实判断
价值判断
元伦理学
实践
fact judgment
value judgment
metaethics
practice
Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
Dong Y.-X.
;
Li Y.
;
Zhang H.-B.
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  |  
浏览/下载:100/0
  |  
提交时间:2013/03/25
Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system
the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms
such as adaptive background prediction detecting method. When background has dispersion-decreasing structure
the traditional target detection algorithms would be more useful. But when the background has large gray gradient
such as sea-sky-line
sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature
in our opinion
from the perspective of mathematics
the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis
the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection
its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore
the purpose of the image preprocessing is to reduce the effects from noise
also to raise the SNR of image
and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics
the median filter is used to eliminate noise
improve signal-to-noise ratio
then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line
so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
The value relevence of earnings restatements - Empirical evidence from China
会议论文
作者:
Chen, Li-Ying
;
Li, Wan-Li
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  |  
浏览/下载:4/0
  |  
提交时间:2019/12/10
Chinese listed companies
Information disclosure
Market reactions
Noncore Restatements
Price models
Value judgment
Value Relevence
Road Tripping Down the Digital Preservation Highway: Part IV: Classic Rides
期刊论文
Journal of Electronic Resources Librarianship, 2011, 卷号: Vol.23 No.4, 页码: 392-398
作者:
JessicaBrancoColati
;
GregoryC.Colati
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2020/01/04
Electronic
Libraries
Preservation
Access
to
Information
Value
Judgment
Standards
Video
Technology
Librarian
Attitudes
Librarians
Archives
Libraries
Metadata
Decision
Making
Higher
Education
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