固体潮对测站位移影响的理论研究

重新推导了IERS2 0 0 0中关于固体潮对测站位移影响的所有公式 ,指出 :在时间域内二阶和三阶引潮力位对测站位移影响的公式中 ,理论上应以测站地心距代替地球赤道半径。利用最新的精密引潮位展开代替IERS2 0 0 0采用的Cartwright&Tayler(1971)潮汐展开 ,重新计算了田谐潮波和带谐潮波的相对频率特性的改正。计算表明 ,以上两种修正在亚毫米量级上与IERS2 0 0 0存在差异 ,这在目前的空间大地测量技术中是必须考虑的。     

海洋负荷潮汐对测站位移影响的理论研究

测站位移的海潮效应可以看作是一种负荷影响。海潮负荷对测站位移的影响在某些台站（例如大洋中的岛屿以及沿海岩地区）可达几厘米，因此空间大地测量技术中必须以改正。研究了海洋负荷潮汐对测站位移影响的理论和方法，在推导过程中回避了将点负荷密度展开为球谐函数，而是直接以负荷引力位为基础，并将海潮潮高引入表达式中，推导出了海潮对测站位移影响的有关公式，同时探讨了在毫米级精度时需要注意的一些问题，为空间大地测量学的理论研究提供参考和依据。     

非圆轨道GPS/LEO掩星反演地球大气参数的算法及讨论

在非圆轨道GPS和LEO卫星条件下，给出一种较为直接的GPS／LEO掩星反演地球大气参数技术中弯曲角序列的迭代算法，并在理论上对该迭代法的收敛性进行了严格的数学证明．利用GPS掩星反演模拟程序，定量估算了卫星圆轨道假设对GPS／LEO掩星反演地球大气参数的影响，并验证了在非圆轨道条件下各种迭代法的一致性．指出了文献中给出的级数展开迭代算法的不足之处．     

The Origin of Glitches in Pulsars—Phase Oscillation between Anisotropic Superfluid and Normal State of Neutrons in Neutron Stars

Considering neutron star heating by magnetic dipole radiation from 3PF2 super-fluid neutron vortices inside the star, we propose a neutron phase oscillation model between the normal neutron Fermi fluid and the 3PF2 superfluid neutron vortices at the transition temperature of T_(trans) = (2-3)×108 K. With this model we can qualitatively explain most of the observations on pulsar glitches up to date.     

Simulations of Hydrological Cycle Changes Between the LGM and the Present Day over China

Based on the International Satellite Cloud Climatology Project (ISCCP) data in 1983–2006,it is found that there is a high value center of high cloud amount over the Tibetan Plateau (TP),while there is a high value center of middle cloud amount over the Sichuan Basin extending to the coastal area of southeastern China along the same latitude,and a low one over the TP.The present day (PD) and Last Glacial Maximum (LGM) climates are simulated by using the NCAR Community Climate Model (CCM3) nested with a regio...     

A VERIFICATION ON DIVISION OF HYDROCLIMATIC AREA IN CHINA SEAS USING DIGITAL CHARACTERISTIC OF FREQUENCY DISTRIBUTION

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南盘江盆地中三叠统复理石中的同沉积挤压构造——一类新的沉积构造的归类、命名和构造意义探讨

南盘江盆地在中三叠世时接受了厚达5000m的复理石沉积，而该复理石中保存有丰富的原生沉积构造。笔者等在这些沉积构造中识别并命名了一类新的构造——同沉积挤压构造，并用简单的实验定性地模拟了该类构造的形成机理。这些同沉积挤压构造包括：挤压皱纹、挤压岩枕、挤压裂隙和挤压皱脊，发育于复理石砂岩层的底面或泥岩层的顶面，是相关砂层或泥层沉积后到成岩前复理石盆地遭受挤压收缩的动态记录。根据这些同沉积挤压构造的方向初步判断，南盘江盆地在中三叠世接受复理石沉积的同时受到了SSW—NNE方向的挤压作用，盆地处于挤压收缩阶段。这些构造为复理石盆地的动态演化研究提供了新的证据。     

Model of Reflection Spectra of Rock Surface in 2π Space

This paper deals with reflection spectra and polarized reflection spectra of 20 sorts of rock in 2π space, and then creates a model of reflection spectra of rock surface in 2π space. We measured the change of reflection and polarized reflection spectra as altering the incidence angle, vertex angle, azimuth angle, band and polarization. The results show that influence of the incidence angle on spectral curves is very strong. And when the vertex angle is constant, the horizontal azimuth polarizes rock spectra, and distorts the circular spectrum to become elliptic. The polarization influences the reflection intensity of rock spectra, but has no evident influence on the characteristics of wave forms of rock in 2π space. Therefore, we can describe the whole reflection spectral characteristics, including polarization, of rock surface in 2π space by measuring and calculating the e and p values in several key directions.     

国际金价走势及对策

在世界金矿资源勘查、黄金生产、黄金储备和黄金消费资料分析的基础上,作者就金价下跌、我国金价与国际全面接轨对我国特别是对地勘行业的黄金勘查和生产状况的影响进行了分析。作者认为,世界巨量黄金储备是制约目前国际黄金价格的主要因素。但在黄金价格已接近或低于生产成本线的情况下,金价的下跌幅度有限,亦不会长久。我国的黄金企业只有采取规模经营和苦练内功等,方能降低生产成本,提高经营效益,才有资格参与国际竞争。     

A NEW APPROACH TO THE DESIGN OF A SYSTEM FOR FEATURE EXTRACTION BASED ON HUMAN-COMPUTER COLLABORATIVE TACTIC

We are involved in an embarrassing situation that the limited capa-bility of automated feature extraction in digital photogrammetric systems cannotsatisfy the increasing needs for rapid acquisition of semantic information for appli-cations.Facing this challenge,a new tactic,Human-Computer Collaborative（HCC）tactic,and a corresponding new method,Operator-Object Directed（OOD）method,are proposed for the design of a system for feature extractionfrom large scale aerial images.We hold that in almost all technical complex sys-tems,full automation will be neither technically feasible nor socially acceptable.The system should be designed to optimize through the cooperative operation withtwo agents in the system:the human and the computer.