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1.
2007年10月19—20日,第二届中国隋炀帝学术研讨会在湖南文理学院召开。与会代表有来自台湾、北京、上海、浙江、河南、湖北、四川和湖南的专家学者40余人,其中有台湾社会活动家及学者杨义富先生,四川大学李映发教授,  相似文献   

2.
张怡微 《世界博览》2013,(20):87-87
以上海的角度来说,台风还的确来自于台湾。此消彼长,像漂流瓶,也像快递,三日内企及,带着遥远的牵挂与湿漉漉的哀愁。  相似文献   

3.
ASES全称为亚太地区学生企业家精神协会(Asia-Pacific Student Entrepreneurship Society)由美国斯坦福大学亚裔工程师协会(SSAE)于2000年4月发起成立,在美国斯坦福大学、伯克利、麻省理工以及加拿大、日本、韩国、新加坡、菲律宾、印度等国都有分会,在中国的4个分会分布于浙江、上海、香港和台湾。  相似文献   

4.
上海本地人源流主成分分析   总被引:1,自引:0,他引:1  
本文对分布于上海市郊9个区县13个乡镇的本地人群的体质特征和姓氏进行了主成分分析,发现上海本地人主要可以分为3个类群,与其他研究结果相整合推测他们可能分别源于越人、吴人和历史上的北方移民.各主成分所占数据信息的比例显示,本地人中最主要的差异是北方移民和南方土著的差异,其次是南方土著中吴人和越人的差异,再次是越人内部也可以分出两种来源,把各主成分值在上海地图上分别画成趋势图,发现各趋势图分别代表了上海历史上不同的移民事件.对姓氏的地理分析也揭示了南方姓氏和北方姓氏的扩散趋势和性质是不同的。  相似文献   

5.
分析黎族、海南回族、仡隆人群中Y染色体单倍型(Y-SNP)的分布,从遗传学角度研究3个人群的起源。选取部分与东亚人群起源相关的Y染色体非重组区单核苷酸多态性位点,采用PCR-RPLF和geno-typing法分析其多态性,观察由这些多态性位点组成的单倍型在海南3个人群中的分布情况,并将结果与其他人群的分布进行比较。结果在黎族人群中发现4种Y染色体单倍型,其中单倍型O*-175为5个支系所共有,且分布频率都在95%以上。回族人群出现4种单倍型,仡隆人群有2种单倍型。由单倍型种类、频率分布及主成分分析均揭示,黎族与台湾原住民及百越最为接近,可能有共同的起源。海南回族与中国北方回族遗传关系较远;仡隆人群与汉族差异较大,而与百越的仡佬族、水族及黎族遗传关系接近。  相似文献   

6.
裴彧  吴明远 《科技资讯》2012,(33):246-247
随着经济迅速发展,物质文化生活水平不断提高,对于幸福感的越发重要。本文通过问卷调查和数据分析发现家庭和睦、身心健康、工作满意、人际和谐和实现价值是影响上海青年人群幸福感的重要来源。调查结果印证了影响上海青年人群的幸福感的因素是家庭和睦、身心健康、工作满意、人际和谐和实现价值等方面,并且将这五个方面分为内外因素以及基础、支持、重要因素。  相似文献   

7.
袁越 《世界博览》2010,(18):36-41
阿里山、日月潭和台北101大楼是台湾最著名的三个旅游景点,但它们只是台湾的壳。要想了解真实的台湾,就必须去那里的小镇住上几天。  相似文献   

8.
张爱玲是三四十年代上海“孤岛”时期红极一时的女作家,她的文学创作上承“五四”的女性文学传统,同时也如“落地的麦子不死”(王尔德语)下启了几十年来多位女作家的女性写作,台湾的施叔青便是一例,两位作家的写作在社会历史文化背景、中西写作技巧的共同点下显现出相同相似的特点和不同之处,各为两个时代的女性文学作出了自己的贡献。  相似文献   

9.
《当代地方科技》2006,(3):89-89
有感于很多护肤保养品因材料选用不当而严重损害女性的肤质健康,上海鑫上递营销策划有限公司委由陈荚铭先生所领导的台湾生物科技实验室研发出真正能被人类皮肤细胞吸收,激活的活肤圣品——比芮儿活肤系列。  相似文献   

10.
兰翅八色鸫为我国广东、广西及云南的留鸟;河南信阳,安徽霍山,台湾山地(夏候鸟);广东沿海,福建福州,上海及附近的沙卫山岛(旅鸟);河北北戴河(迷鸟)。我国共有三个亚种(郑作新,1976)。  相似文献   

11.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

12.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

14.
Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to  相似文献   

15.
Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications (up to 574.8 km/ h test speeds or 380 km/h commercial speeds) in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.  相似文献   

16.
17.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

18.
Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.  相似文献   

19.
Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with  相似文献   

20.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

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