|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Some studies on mechanics of continuous mediums viewed as differential manifolds显示文摘The continuous mediums are divided into two kinds according to their geometrical configurations,the first one is related to Euclidian manifolds and the other one to Riemannian manifolds/surfaces in the point of view of the modern geometry.Two kinds of finite deformation theories with respect to Euclidian and Riemannian manifolds have been developed in the present paper.Both kinds of theories include the definitions of initial and current physical and parametric configurations,deformation gradient tensors with properties,deformation descriptions,transport theories and governing equations of nature conservation laws.The essential property of the theory with respect to Euclidian manifolds is that the curvilinear coordinates corresponding to the current physical configurations include time explicitly through which the geometrically irregular and time varying physical configurations can be mapped in the diffeomorphism manner to the regular and fixed domains in the parametric space.It is quite essential to the study of the relationships between geometries and mechanics.The theory with respect to Riemannian manifolds provides the systemic ideas and methods to study the deformations of continuous mediums whose geometrical configurations can be considered as general surfaces.The essential property of the theory with respect to Riemannian manifolds is that the thickness variation of a patch of continuous medium is represented by the surface density and its governing equation is rigorously deduced.As some applications,wakes of cylinders with deformable boundaries on the plane,incompressible wakes of a circular cylinder on fixed surfaces and axisymmetric finite deformations of an elastic membrane are numerically studied. | XIE XiLin CHEN Yu SHI Qian | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，2： | 6 |
| 2 | Interplay of surface geometry and vorticity dynamics in incompressible flows on curved surfaces显示文摘Incompressible viscous flows on curved surfaces are considered with respect to the interplay of surface geometry, curvature, and vorticity dynamics. Free flows and cylindrical wakes over a Gaussian bump are numerically solved using a surface vorticitystream function formulation. Numerical simulations show that the Gaussian curvature can generate vorticity, and non-uniformity of the Gaussian curvature is the main cause.In the cylindrical wake, the bump dominated by the positive Gaussian curvature can significantly affect the vortex street by forming velocity depression and changing vorticity transport. The results may provide possibilities for manipulating surface flows through local change in the surface geometry. | Qian SHI Yu CHEN Xilin XIE | 2017 | Applied Mathematics and Mechanics(English Edition)2017，38，9： | 2 |
| 3 | Isotope geochemistry of granitoids in South China and their metallogeny显示文摘 | Hong Dawei Xie Xilin Zhang Jisheng | 1998 | Resource Geology1998，48，4： | 1 |
| 4 | Fusing local patterns of gabor magnitude and phase for face recogni- tion显示文摘 | Xie Shufu Shan Shiguang Chen Xilin | 2010 | IEEE Transactions on Image Processing2010，19，5： | 1 |
| 5 | Fusing local patterns of Gabor magnitude and phase for face recognition显示文摘 | Xie Shufu Shan Shiguang Chen Xilin | 2010 | IEEE Trans on Image Processing2010，19，5： | 1 |
| 6 | A study on the early-warning technique concerning debris flow disasters显示文摘According to the principle of the eruption of debris flows, the new torrent classification techniques are brought forward. The torrent there can be divided into 4 types such as the debris flow torrent with high destructive strength, the debris flow torrent, high sand-carrying capacity flush flood torrent and common flush flood by the techniques. In this paper, the classification indices system and the quantitative rating methods are presented. Based on torrent classification, debris flow torrent hazard zone mapping techniques by which the debris flow disaster early-warning object can be ascertained accurately are identified. The key techniques of building the debris flow disaster neural network (NN)real time forecasting model are given detailed explanations in this paper, including the determination of neural node at the input layer, the output layer and the implicit layer, the construction of knowledge source and the initial weight value and so on. With this technique, the debris flow disaster real-time forecasting neural network model is built according to the rainfall features of the historical debris flow disasters, which includes multiple rain factors such as rainfall of the disaster day, the rainfall of 15 days before the disaster day, the maximal rate of rainfall in one hour and ten minutes. It can forecast the probability, critical rainfall of eruption of the debris flows, through the real-time rainfall monitoring or weather forecasting. Based on the torrent classification and hazard zone mapping, combined with rainfall monitoring in the rainy season and real-time forecasting models, the debris flow disaster early-warning system is built. In this system, the GIS technique, the advanced international software and hardware are applied, which makes the system′s performance steady with good expansibility. The system is a visual information system that serves management and decision-making, which can facilitate timely inspect of the variation of the torrent type and hazardous zone, the torrent management, the early-warning of disasters and the disaster reduction and prevention. | ZHOU Jinxing, WANG Lixian, XIE Baoyuan, FEI Shimin, WANG Xilin (1. Inst. of Forestry Research, Chinese Academy of Forestry Science, Beijing 100091, China 2. College of Resource & Environment, Beijing Forestry University, Beijing 100083, China) | 2002 | Journal of Geographical Sciences2002，12，3： | 1 |
| 7 | Eye-Opening Alters the Interaction Between the Salience Network and the Default-Mode Network显示文摘Dear Editor,Brain networks consist of several long-distance regions that interact constantly with each other.Interactions between networks suggest that different brain functions are coordinated during complex cognitive tasks[1].A triple-network mechanism underlying cognitive control has been found across task paradigms and stimulus modalities[2].This triple-network mechanism includes the interactions among the salience network(SN),the default mode network(DMN),and the central executive network(CEN). | Junrong Han Xuehai Wu Hang Wu Dong Wang Xuan She Musi Xie Fang Zhang Delong Zhang Xilin Zhang Pengmin Qin | 2020 | Neuroscience Bulletin2020，36，12： | 1 |
| 8 | Fusing local patterns of Gabor magnitude and phase for face recog- nition显示文摘 | Xie Shufu Shan Shiguang Chen Xilin | 2010 | IEEE Transactions on Image Processing2010，19，5： | 1 |
| 9 | Fusing Local Patterns of Gabor Magnitude and Phase for Face Recognition显示文摘 | Xie Shufu Shan Shiguang Chen Xilin | 2010 | IEEE Transactions on Image Processing2010，19，5： | 1 |
| 10 | No tillage outperforms conventional tillage under arid conditions and following fertilization显示文摘Reduced tillage practices present a tool that could sustainably intensify agriculture.The existing literature,however,lacks a consensus on how and when reduced tillage practices should get implemented.We reanalyzed here an extensive dataset comparing how regular tillage practices(i.e.,conventional tillage)impacted yield of eight crops compared to stopping tillage altogether(i.e.,no-tillage practice).We observed that aridity and fertilization favored no tillage over conventional tillage whereas conventional tillage performed better under high fertility settings.We further show that the responses are consistent across the crops.Our reanalysis complements the original and fills a gap in the literature questioning the conditions under which reducing tillage presents a viable alternative to common tillage practices. | Stavros D.Veresoglou Junjiang Chen Xuheng Du Qi Fu QingLiu Geng Chenyan Huang Xilin Huang Nan Hu Yiming Hun Guolin C.Li Zhiman Lin Zhiyu Ma Yuyi Ou Shuo Qi Haitian Qin Yingbo Qiu Xibin Sun Ye Tao YiLing Tian Jie Wang Lingxiao Wu Ziwei Wu Siqi Xie Ao Yang Dan Yang Chen Zeng Ying Zeng RuJie Zhang | 2023 | Soil Ecology Letters2023，5，1： | 1 |
| 11 | Continental crustal growth and the supercontinental cycle: Evidence from the Central Asian Orogenic Belt显示文摘 | Hong Dawei Zhang Jisheng Wang Tan Wang Shiguang Xie Xilin | 2004 | J Asian Earth Sci2004，23，5： | 1 |
| 12 | Research progress of microRNA in prevention and treatment of osteonecrosis of the femoral head显示文摘20世纪80年代,Feinbaum等人在蠕虫的生长发育过程中首次发现了miRNA,并将其命名为Lin-4。随着微生物学的发展和基因测序技术的不断完善,miRNA逐渐成为临床医学研究的热点。其中一组miRNA已被证实在骨肿瘤、骨关节炎、类风湿关节炎等骨科疾病的基因调控中发挥着基础性作用。研究miRNA在股骨头坏死(ONFH)中的作用可以提高对该病发病机制的认识。ONFH是一种骨科疾病,是导致股骨头血供紊乱的主要原因,主要症状是骨骼、肌肉功能障碍。近期的研究表明,miRNA在调节ONFH微循环、血管损伤修复、其他疾病引起的局部微循环功能障碍、骨细胞凋亡等方面发挥了重要作用。本文分析和总结了近期的miRNA和ONFH相关研究成果,并展望了其在疾病防治方面的前景。 | Changsui Yu Liguo Zhu Xiaofeng Zhang ZhongbaoYu Fengyuan Zhan Shuren Wang Xilin Xu Zhengchun Wang Jun Zhao Xinsheng Xie | 2018 | TMR Clinical Research2018，1，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员