中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共9条，第1-9条 帮助

条数/页： 排序方式：
Full-stage creep model for deeply buried soft rock based on fractional order differential and Perzyna overstress function 期刊论文  OAI收割
MECHANICS OF TIME-DEPENDENT MATERIALS, 2023, 卷号: 27, 期号: 2, 页码: 321
作者:  Yang, Liu;  Zhou, Hui;  Liu, Rongfei;  Yang, Fanjie;  Zhang, Chuanqing
  |  收藏  |  浏览/下载：15/0  |  提交时间：2023/08/02
Observation of dual relaxation dynamics of polarization clusters in barium titanate by photon correlation spectroscopy 期刊论文  OAI收割
JAPANESE JOURNAL OF APPLIED PHYSICS, 2015, 卷号: 54, 期号: 4, 页码: —
作者:  Zhang, MJ;  Guo, Z;  Tai, RZ;  Luo, HS;  Namikawa, K
收藏  |  浏览/下载：17/0  |  提交时间：2015/12/09
A new method to suppress high-order harmonics for a synchrotron radiation soft X-ray beamline 期刊论文  OAI收割
CHINESE PHYSICS C, 2015, 卷号: 39, 期号: 4, 页码: 48002
作者:  Guo ZY(郭志英);  Hong CH(洪才浩);  Tang K(唐坤);  Han Y(韩勇);  Chen DL(陈栋梁)
收藏  |  浏览/下载：44/0  |  提交时间：2016/04/18
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.  
Application of adaptive enhancement means in head and neck CR image (EI CONFERENCE) 会议论文  OAI收割
2012 3rd International Conference on Information Technology for Manufacturing Systems, ITMS 2012, September 8, 2012 - September 9, 2012, Qingdao, China
Zhang M.-H.; Zhang Y.-Y.
收藏  |  浏览/下载：37/0  |  提交时间：2013/03/25
Digital CR of head and neck overcomes the disadvantage of regular X-ray radiography  which can not reveal bone and soft tissue position deficiency in one exposing  and reduces the Xray radiation dose. Meanwhile  various factors cause the decline of image quality  and images must be enhanced in order to meet demands of doctor's clinical diagnosis. The general enhancement algorithms don't consider body's structure differences and density characteristics. A new adaptive CR enhancement algorithm was proposed in this article  and head and neck CR images were processed with this method and compared with linear unsharp masking method. The experiment proves that the details of CR image enhanced were abundant and enhanced CR image had good visual effect  SNR was high  as well as detail variance /background variance (DV/BV) indicating that this algorithm is suitable for head and neck CR medical images. (2012) Trans Tech Publications  Switzerland.  
The elastic properties, elastic models and elastic perspectives of metallic glasses 期刊论文  OAI收割
PROGRESS IN MATERIALS SCIENCE, 2012, 卷号: 57, 期号: 3, 页码: 487
Wang, WH
收藏  |  浏览/下载：112/0  |  提交时间：2013/09/23
Algorithm research of flexible graphplan based on heuristic (EI CONFERENCE) 会议论文  OAI收割
9th International Conference for Young Computer Scientists, ICYCS 2008, November 18, 2008 - November 21, 2008, Zhang Jia Jie, Hunan, China
作者:  Xu S.;  Wang X.;  Wang X.;  Wang X.;  Sun Y.
收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25
Classic Graphplan has too much restriction on capturing the full subtlety of many real problems. Flexible Graphplan is defined which supports the soft constraints often found in reality. Heuristic concept is introduced to the process of plan extraction in flexible graphplan in order to improve the efficiency of plan extraction and the quality of plan. A novel algorithm using the new heuristic function which is applied by improved sum mutex heuristic to deal with planning problems is proposed. Sum mutex heuristic which is in common use as heuristic function takes into account only static propositional mutexes  and ignores the mutexes of actions. The performance of the new algorithm on many benchmark problems is remarkably robust. It can solve many planning problems  which can't be solved by the heuristic state space search planning system using sum mutex heuristic. 2008 IEEE.  
Threshold resummation for Higgs production in effective field theory 期刊论文  OAI收割
PHYSICAL REVIEW D, 2006, 卷号: 73, 期号: 7, 页码: -
作者:  Ji, XD;  Idilbi, A;  Ma, JP;  Yuan, F;  Idilbi, A , Univ Maryland, Dept Phys, College Pk, MD 20742 USA
  |  收藏  |  浏览/下载：18/0  |  提交时间：2012/08/02
In-plane magnetic anisotropy in RF sputtered Fe-N thin films 期刊论文  OAI收割
Thin Solid Films, 2003, 卷号: 440, 期号: 1-2, 页码: 35-40
H. B. Nie; S. Y. Xu; C. K. Ong; Q. Zhan; D. X. Li; J. P. Wang
收藏  |  浏览/下载：35/0  |  提交时间：2012/04/14