中国科学院机构知识库网格系统: 检索

The MLS-based numerical manifold method for nonlinear transient heat conduction problems in functionally graded materials 期刊论文 OAI收割
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2022, 卷号: 139
作者: Zhang, Limei; Guo, Fei; Zheng, Hong

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收藏 | 浏览/下载：13/0 | 提交时间：2023/08/02

Nonlinear transient heat conduction Functionally graded materials Moving least squares based numerical manifold method (MLS-NMM) Backward difference scheme

Does the Opening of High-Speed Railway Lines Reduce the Carbon Intensity of China's Resource-Based Cities? 期刊论文 OAI收割
ENERGIES, 2021, 卷号: 14, 期号: 15, 页码: 18
作者: Tang, Zhipeng; Mei, Ziao; Zou, Jialing

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收藏 | 浏览/下载：25/0 | 提交时间：2021/11/05

resource-based city high-speed railway carbon intensity difference-in-difference method China

Does the Opening of High-Speed Railway Lines Reduce the Carbon Intensity of China's Resource-Based Cities? 期刊论文 OAI收割
ENERGIES, 2021, 卷号: 14, 期号: 15, 页码: 18
作者: Tang, Zhipeng; Mei, Ziao; Zou, Jialing

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收藏 | 浏览/下载：12/0 | 提交时间：2021/11/05

resource-based city high-speed railway carbon intensity difference-in-difference method China

Elastic equivalent numerical modeling based on the dynamic method of Longmaxi Formation shale digital core 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2020, 卷号: 63, 期号: 7, 页码: 2786-2799
作者: Jian ShiKai; Fu LiYun; Wang ZhiWei; Han TongCheng; Liu JianLin

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收藏 | 浏览/下载：25/0 | 提交时间：2020/09/28

Longmaxi Formation shale Digital core Elastic equivalent numerical modeling based on the dynamic method Biot poroelastic equation Finite-difference simulation

A pdf-Free Change Detection Test Based on Density Difference Estimation 期刊论文 OAI收割
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, 2018, 卷号: 29, 期号: 2, 页码: 324-334
作者: Bu, Li; Alippi, Cesare; Zhao, Dongbin

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收藏 | 浏览/下载：20/0 | 提交时间：2017/05/04

Concept Drift Least Squares Density-difference (Lsdd)-based Method Probability Density Function (Pdf)-free Three-level Threshold Mechanism

A Local Image Enhancement Method Based on Adjacent Pixel Gray Order-preserving Principle 会议论文 OAI收割
5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013
作者: Fan XP(范晓鹏); Cai TF(蔡铁峰); Zhu F(朱枫)

收藏 | 浏览/下载：35/0 | 提交时间：2013/12/26

The paper is committed in local image enhancement. At first, the authors propose an adjacent pixel gray order-preserving principle. Adjacent pixel gray order-preserving principle is the basement of local enhancement method which ensures that there is no distortion in processed image. And then, the authors propose an iterative algorithm, which could stretch gray-scale difference of adjacent pixels in premise of not changing gray magnitude relationship between adjacent pixels. At last, the authors propose a totally reference image quality assessment method based on adjacent pixel gray order-preserving principle. According to this quality assessment method, the authors made a set of comparative experiments with local histogram equalization and method. Experimental results show that the proposed enhancement method can get higher score and provide better visual effects, fully demonstrating its effectiveness. According to this quality assessment method, the proposed method shows a good effectiveness, through experimental results and comparison with local histogram equalization method.

The application of adaptive enhancement algorithm based on gray entropy in mammary gland CR image (EI CONFERENCE) 会议论文 OAI收割
2012 2nd International Conference on Consumer Electronics, Communications and Networks, CECNet 2012, April 21, 2012 - April 23, 2012, Three Gorges, China
Zhang M.-H.; Zhang Y.-Y.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

Mammary gland is composed entirely of soft tissue with approximate density therefore mammary gland CR medicine radiation image presents a low contrast and slight difference changes may be a manifestation of tumor so it is necessary to enhance mammary gland CR image to improve its visual quality in order to meet the demands of doctor's clinical diagnosis. However the general enhancement algorithms over enhance the contrast and noise due to image details lost aiming at the defects a mammary gland CR medicine image adaptive enhancement arithmetic based on image gray entropy is put forward. The arithmetic adapts dizzy image to magnify selected spatial frequency response in order to enhance the edge details of mammary gland CR images. It can adjust weighted factor K according to image gray characteristics namely pixel gray entropy. Experiments results demonstrate that mammary gland CR image enhanced by the algorithm has abundant details and high signal-to-noise ratio moreover CR image enhanced has good visual effect. So the method is effective and fit for enhancing CR medical radiation image edge details. 2012 IEEE.

Features extraction and matching of teeth image based on the SIFT algorithm (EI CONFERENCE) 会议论文 OAI收割
2012 2nd International Conference on Computer Application and System Modeling, ICCASM 2012, July 27, 2012 - July 29, 2012, Shenyang, China
作者: Wang X.; Wang X.; Wang X.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

Using of SIFT algorithm in the image of teeth model can detect the features of the teeth image effectively. In this approach first search over all scales and image locations by using a difference-of-Gaussian function to identify potential interest points that are invariant to scale and orientation. Second select keypoints based on measures of their stability and a detailed model is fit to determine location and scale at each candidate location. Third assign one or more orientations to each keypoint location based on local image gradient directions. Last measure the local image gradients at the selected scale in the region around each keypoint. And then use the KNN algorithm to match the features. Through lots of experiments and comparing with other feature extraction methods this method can detect the features of the teeth model effectively and offer some available parameters for 3D reconstruction of the teeth model. the authors.

Statistical inference using a weighted difference-based series approach for partially linear regression models 期刊论文 OAI收割
JOURNAL OF MULTIVARIATE ANALYSIS, 2011, 卷号: 102, 期号: 3, 页码: 601-618
作者: Ai, Chunrong; You, Jinhong

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收藏 | 浏览/下载：18/0 | 提交时间：2018/07/30

Partially linear model Fixed effects Difference-based method Series approximation Weighted estimation Covariate selection

Application of quantitative fault tree analysis based on fuzzy synthetic evaluation to software development for space camera (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011, August 8, 2011 - August 10, 2011, Zhengzhou, China
作者: Li Y.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

Software reliability analysis is a significant measure to guide design of software reliability. Now software fault tree method to carry on software reliability analysis is used more and more. But it can only qualitative carry on the analysis because of many reasons. For example the scale of software is enlarging the software architecture is getting more and more complex the reason of software fault is very difficult to analyze the software is difference with hardware and it is very hard to obtain the expiration the quantitative data and so on. The space camera is extremely high to the reliable request. So the qualitative analysis is unable to satisfy the analysis request. In view of space camera characteristics a method of fault tree analysis based on fuzzy synthetic evaluation is proposed. The results show that the new method makes software quantitative fault tree analysis possible and optimizes. It can also solve the problem of software component which is unable to quantize precisely. 2011 IEEE.