试论洋山深水港与上海国际航运中心建设

建设国际航运中心是上海城市发展的宏伟目标之一。目前,围绕东北亚国际航运中心的竞争十分激烈,釜山、神户、高雄等港口均提出了明确的发展目标,并纷纷建设一系列深水集装箱泊位。本文以国际竞争态势为背景,着重分析了国际集装箱航运市场的最新动态、洋山深水港对建设上海国际航运中心的重要意义,并详细论证了强化上海国际航运中心功能的政策创新,探讨了优化上海国际航运中心营运水平的关键措施,为推进上海国际航运中心建设献计献策。     

Modeling the seismic response of basin-edge structure by a sequential waveform method

A sequential waveform method is developed to simulate the seismic response of basin-edge structure excited by a plane incident P-wave. The full procedure involves: (a) a previous parameterization of the investigated model using the seismic wave velocities and depths of the sedimentary stratifications; (b) an input motion determined from the records at stations installed on hard rock; (c) forward computation of the P-SV elastic wave field by means of a two-dimensional finite difference (FD) method; (d) the optimization of the model vector using simulated annealing technique and comparing the simulated seismic response of the tested structure with the observed wave field; (e) the correction of the initial model by trial-and-error by testing the differences between synthetics and observed data, and (f) the final solution obtained by iteration using the conjugate gradient algorithm. The search of an optimal basin-edge model has been parallel processed by varying the shapes and velocities of strata on the basis of the fitting of relative timing, amplitude and phase between the output and the observed data. The input motion and sensitivity have been checked and the validity of the method has been demonstrated by numeric analysis. Using the teleseismic records generated by 7 earthquakes recorded at 26 broadband seismic stations, we have studied the seismic velocity structure of the southern edge of the Jiyang depression located in the Bohai Bay basin, northern China. Two cross sections show an agreement between the velocity results and the geological sections available in the region. In addition, we obtain evidence of three hidden faults under the sections and features that suggest major extensions at the Paleogene.     

青藏高原植物形态和解剖适应性研究进展

与低海拔地区相比，青藏高原的太阳辐射、水分条件、氧分压、气温等环境条件都有明显差异，青藏高原的植物在细胞壁厚度、栅栏细胞层数、通气组织大小、异细胞数量和分布、表皮附属物类型等方面与低海拔地区的相比也有较大的不同。综述了在青藏高原特殊的生态条件下，植物在形态和解剖方面的适应性表现，分析了该领域目前的研究特点和存在的一些问题，并在全球环境变化背景下，对其发展前景进行了展望，指出了未来的发展趋势。     

信息技术与地理教学的整合

当前我国地理基础教育领域正在进行着一场意义深远的课程改革。在这场改革中,推进信息技术与地理教学的整合成为其中的重要内容。地理教师应该也必须掌握将信息技术与地理教学进行整合的技能,从而实现地理教育的目标。本文就信息技术与地理教学整合的意义、原则以及整合中应注意的一些问题作论述。     

Spectral Simulation and Conditioning to Local Continuity Trends in Geologic Modeling

Spectral simulation has gained application in building geologic models due to the advantage of better honoring the spatial continuity of petrophysical properties, such as reservoir porosity and shale volume. Distinct from sequential simulation methods, spectral simulation is a global algorithm in the sense that a global density spectrum is calculated once and the inverse Fourier transform is performed on the Fourier coefficient also only once to generate a simulation realization. The generated realizations honor the spatial continuity structure globally over the whole field instead of only within a search neighborhood, as with sequential simulation algorithms. However, the disadvantage of global spectral simulation is that it traditionally cannot account for the local information such as the local continuity trends, which are often observed in reservoirs and hence are important to be accounted for in geologic models. This disadvantage has limited wider application of spectral simulation in building geologic models. In this paper, we present ways of conditioning geologic models to the relevant local information. To account for the local continuity trends, we first scale different frequency components of the original model with local-amplitude spectrum ratios that are specific to the local trend. The sum of these scaled frequency components renders a new model that displays the desired local continuity trend. The implementation details of this new method are discussed and examples are provided to illustrate the algorithm.     

酶法催化餐饮废油制备生物柴油的研究

以废物资源转化为宗旨,利用固定化脂肪酶催化餐饮废油与乙醇反应制备生物柴油,通过实验获得最佳酯化反应条件:反应温度47℃、有机溶剂为正己烷、醇油比3∶1,5次投加乙醇,酶用量为0.3g,反应时间32h时,生物柴油产率可达81%。     

基于GIS/MIS/OA的短周期工业原料林经营模式研究

提出了短周期工业原料林经营模式的概念,探讨了短周期工业原料林经营模式的体系结构、子系统功能和主要林业数表类型,说明其与GIS/MIS/OA系统集成的必然趋势,并以岳阳纸业股份公司的纸浆原料林为例进行了实例分析。     

晋城市下河泉水源地开发利用可行性分析

在野外调查和收集现有资料基础上,对下河泉水源地水文地质条件、泉水流量动态、水源地保证程度与可能的环境问题进行了分析,论证了建立下河泉水源地的可行性.     

油气化探数据库系统

建立油气化探数据库是油气化探信息资源共享、科学管理、宏观决策的基础和依据,是油气化探数据处理及异常评价的基础。本系统采用动态自适应结构,收集、录入了几十年来我国油气化探数据,可以完成油气化探数据登录、管理、浏览、检索、报表、数据预处理。文章中论述了油气化探数据库的结构、特点及功能,反映了油气化探数据库研究领域的新进展和研究水平。     

利用Java-X3D实现地震层位三维可视化

地震层位三维可视化可以提供形象化的地震层位三维特征,便于地震资料的后期解释.在叙述地震层位三维可视化技术原理、目标、方法的基础上,尝试利用Java-X3D技术实现地震层位三维可视化,并利用实际坐标数据,实现了在Internet上跨平台的地震层位及地质构造三维可视化模拟,取得了良好的效果.