|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Lithospheric seismic fabrics of Sulu ultrahigh-pressure metamorphic belt显示文摘Calibration of seismic reflectors appearing in the crust of the Chinese continent sci- entific drilling site can be completed through the correlation studies between direct evidences, such as the drill cores, and geophysical signatures; therefore the interpretation of geophysical data could produce reliable results of crustal structure and composition. On the other hand, there are two Cenozoic volcanoes close to the scientific drilling site; analyzing composition of xenoliths existent in the volcanoes and evaluating their seismic velocities can also offer information about the mantle and lower crust. After the calibration via cores and well-logging data, the seismic re- flectors appearing in the UHP belt can be caused by lithological changes within the UHP rock slice, ductile shearing rock-suites, and later fracture zones. Among these sources, ductile shearing resulted in displacement and detachment of original rock-sheets, producing some rock-interbeds of several hundred meters thick that are named the ductile shearing rock-suites. A suite consists of mylonized gneiss and eclogite slices that underwent shearing, becoming the major mechanism responsible to generate regional strong reflections. The UHP rock-slice is characterized by complicated structures and high density, high seismic velocity and high electri- cal resistivity, its thickness is usually less than 11 km. Velocity and density of the gneiss-layer beneath gradually tend to normal with increasing depth. Based on the xenoliths we can infer that the middle crust contains a lot of gneisses, and the lower crust consists of different granulites. The lithospheric mantle has multi-layer structures and consists mainly of spinal lherzolite and harzburgite, implying late Mesozoic lithospheric thinning. The seismic fabrics with different ori- gins were possible products of different geodynamic processes. For instance, the UHP rock-slice was produced by the UHP metamorphic process and the exhumation of subducted supercrustal rocks after the Triassic collision between the Yangtze and Sino-Korean cratons; whilst the ductile shearing rock-suites resulted from shearing deformation processes during the subduction and exhumation. The normal velocity below the UHP rock-slice was correlated with Mesozoic exten- sion processes in the area. Through careful calibration of seismic reflectors and analyzing xeno- liths, one can find the relationship between the causes of seismic reflectors and corresponding geodynamic processes, offering a new basis for reconstruction of regional dynamic evolution history. | YANG Wencai 1 , YANG Wuyang 1 , JIN Zhenmin 2 & CHENG Zhenyan 1 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China 2. China University of Geosciences, Wuhan 430074, China | 2005 | Science China Earth Sciences2005，48，5： | 13 |
| 2 | Shape demagnetization effect on layered magnetoelectric composites显示文摘Magnetoelectric (ME) voltage coefficient of plate layered magnetostrictive-piezoelectric composites was always considered independent of the in-plane size due to the oversimplification in ME theoretical models. Here we report that the ME voltage coefficient depends on the in-plane size owing to shape demagnetization effect on magnetostriction. Both theoretical analysis and experimental results indicate that ME voltage coefficient of layered ME composites changes with the variation in in-plane sizes (length and width). ME coefficient increases with a rise in in-plane sizes, and different aspect ratio also results in different ME coefficients. Proper design of in-plane shape will greatly promote the develop- ment of ME devices. | PAN DeAn LU Jun BAI Yang CHU WuYang QIAO LiJie | 2008 | Chinese Science Bulletin2008，53，14： | 2 |
| 3 | Cooperative wireless networks for better green services显示文摘In order to guarantee the overall return on investment (ROI), improve user experience and quality of service (QoS), save energy, reduce electra magnetic interference (EMI) and radiation pollution, and enable the sustainable deployment of new profitable applications and services in heterogeneous wireless networks coexistence reality, this paper proposes a cross-network cooperation mechanism to effectively share network resources and infrastructures, and then adaptively control and match multi-network energy distribution characteristics according to actual user/service requirements in different geographic areas. Some idle or lightly-loaded base stations (BS or BSs) will be temporally turned off for saving energy and reducing EMI. Initial simulation results show that the proposed approach can significantly improve the overall energy efficiency and QoS performance across multiple cooperative wireless networks. | Yang Yang Zhang Wuxiong Hu Honglin Zhang Sihai Wang Xin Zhao Haitao Zhou Wuyang Wei Jibo | 2011 | Engineering Sciences2011，9，1： | 1 |
| 4 | Bacterial diversity and community structure in acid mine drainage from Dabaoshan Mine, China显示文摘 | YANG Yu WAN Minxi SHI Wuyang | 2007 | Aquatic Microbial Ecology2007，47，2： | 1 |
| 5 | Wind direction and its application on ur-ban planning and industrial layout显示文摘 | YANG Wuyang DONGLiming | 1979 | ScienceChina1979，，11： | 1 |
| 6 | Bacterial Diversity and Community Structure in Acid Mine Drainage from Dabaoshan mine,China显示文摘 | Yang Yu Wang Minxi Shi Wuyang | 2007 | Aquatic Microbioal Ecology2007，47，： | 1 |
| 7 | THEORIES AND PRACTICE OF TERRITORIAL DIVISION OF LABOUR AND LOCATIONAL SUPERIORITIES显示文摘There exists an inherent relationship between territorial division of labour and locational superiorities,of which becomes a basic point followed in the process of regional development and urban planning.The historical evolution of territorial division theories is reviewed first.The authors fully appraise the contributions of A.Smith et al.and comment on some of their shortcomings.An integrated system on locational superiorities is then put forward which contains four pairs of regional or urban superiorities.Finally,the relation of external elements and inherent mechanism in areal differentiation is probed. | Yang Wuyang Liang Jinshe | 1990 | Journal of Geographical Sciences1990，3，2： | 0 |
| 8 | Some Empirical Examples of Central Place Model in China | Yang Wuyang Cai Yuping Yang Qi Departmant of Geography. Beijing University Beijing Institute of Economics | 1990 | China City Planning Review1990，7，1： | 0 |
| 9 | URBAN GROWTH, TRANSPORTATION SYSTEM AND COMMERCIALNETWORK OF BEIJING显示文摘In this afticle, three uopt problems on the developlnent and plabong of Beijing metropolis are expounded (1) Having analyzed the process of urbanlzation dunng 45 years, the autihor divides it into three Stages :city expansion, qrban sprawl and fonmation of centnpotal urban nngr. Then a rank-number-size law is pLif fotward to predict the development and allocation of satellite towns (2) Having looked back on the change of urban transpoftation nforork, the atlthor points out its merits and demerits.According to the increases of traffic flow, improving measures for the urban road systems are demonstrated. (3) Having reviewed the llistory of commercial distnbution and referred to previous lnodels, the author roprds the spatial structure of business as a combined network from central place and idealized stnucture of lnetropolitan area. The trade and service orgaluzation in n1ain urban area and peripheral zone can be planned with defferent ways. The atlthor predicts a rational network of commerce and service of Beijing with a strong BCD Which is accepted by some trade | Yang Wuyang(Department of Geography, Peking University, Beijing 100871)People’s Republic of China | 1995 | Journal of Geographical Sciences1995，5，3： | 0 |
| 10 | Data mining-based model and risk prediction of colorectal cancer by using secondary health data:A systematic review显示文摘Objective:Prevention and early detection of colorectal cancer(CRC)can increase the chances of successful treatment and reduce burden.Various data mining technologies have been utilized to strengthen the early detection of CRC in primary care.Evidence synthesis on the model’s effectiveness is scant.This systematic review synthesizes studies that examine the effect of data mining on improving risk prediction of CRC.Methods:The PRISMA framework guided the conduct of this study.We obtained papers via Pub Med,Cochrane Library,EMBASE and Google Scholar.Quality appraisal was performed using Downs and Black’s quality checklist.To evaluate the performance of included models,the values of specificity and sensitivity were comparted,the values of area under the curve(AUC)were plotted,and the median of overall AUC of included studies was computed.Results:A total of 316 studies were reviewed for full text.Seven articles were included.Included studies implement techniques including artificial neural networks,Bayesian networks and decision trees.Six articles reported the overall model accuracy.Overall,the median AUC is 0.8243[interquartile range(IQR):0.8050-0.8886].In the two articles that reported comparison results with traditional models,the data mining method performed better than the traditional models,with the best AUC improvement of 10.7%.Conclusions:The adoption of data mining technologies for CRC detection is at an early stage.Limited numbers of included articles and heterogeneity of those studies implied that more rigorous research is expected to further investigate the techniques’effects. | Hailun Liang Lei Yang Lei Tao Leiyu Shi Wuyang Yang Jiawei Bai Da Zheng Ning Wang Jiafu Ji | 2020 | Chinese Journal of Cancer Research2020，32，2： | 0 |
| 11 | SOME EMPIRICAL EXAMPLES OF CENTRAL PLACE MODEL IN CHINA'S RURAL AND URBAN STUDIES显示文摘At the beginning of the 1980s, the Central Place Theory(CPT) was introduced into China from the West. The authors of this article are the initiators of applying this model to China’s urban and regional planning as well as to the allocation of commercial activities. Since the commodity economy has been developing in China for thousands of years,most of the areas in eastern plains and inland basins of the country show the spatial structure of typical central places scene. During some six years, the authors participatd in a lot of rural, urban and regional planning projects in which the spatial phenomena and relevant internal mechanism proved this medel and its deformation. This paper gives only a few examples of the application of CPT in China. 1. The distribution of rural markets: the empirical study is based mainly on the situation in Shengfang Town and its vicinal area, 2. The spatial combination of urban Systems; problems about city allocation in North China are emphasized, 3. Commercial centres in city and the networks: a crucial study on commercial distribution of the metropolis Beijing is done by using the central place model. | Yang Wuyang Cai Yuping Yang Qi(Dept. of Urban & Environ. Sci., Peking University, Beijing 100871People’s Republic of China) | 1994 | Journal of Geographical Sciences1994，4，Z1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员