Pattern formation in Rayleigh-Bénard convection: Numerical simulation with a coupled-map-lattice model

The various patterns formed in Rayleigh-Bénard convection under different conditions are numerically simulated with a coupled-map-lattice model. In the case of a lower aspect ratio (L/d=5), the simulations vividly depicted the main features of the transition process from a laminar state to a soft turbulence and then to a hard turbulence. In this case, the cellular structure in a horizontal section is also reproduced. In the case of a larger aspect ratio (L/d=30), the simulations successfully reproduced the spiral-defect chaos and target chaos in the initial stage of the pattern evolution which were recently found in experiments. In this case, for a fluid ofPr=1, it is verified in simulations that both the ideal straight rolls and spiral-defect chaos are stable attractors in the same parameter regime, and that the initial condition is a decisive factor for which one of the two is formed. In the same case, for a fluid ofPr=4, the target patterns are dominant instead of the spirals, the sizes and distributions of the target are also notably dependent on the initial condition.     

Construction of a genetic map with SRAP markers and localization of the gene responsible for the first-flower-node trait in cucumber (Cucumis sativus L.)

With an F2 population from the cross of two cucumber inbred lines, S06 and S52, sequence-related amplified polymorphism (SRAP) was used to construct a genetic linkage map in cucumber (Cucumis sativus L.). Sixty-four SRAP primer combinations generated 108 polymorphic bands in the F2 population analysis. The average of polymorphic bands produced by one primer pair was 1.5, and the maximum was 5. Using Mapmaker 3.0, a linkage map was constructed, which consisted of 77 SRAP markers distributed in nine linkage groups (LOD≥3.0) and spanned 1114.2 cM with an average interval of 14.5 cM between markers. The gene for the first-flower-node trait, termed ffn, was mapped to linkage group Ⅸ, flanked by DC1EM5 and ME7EM2A at 10.3 cM and 12.1 cM distance, respectively.     

利用SPOT5数据制作正射影像图并辅助更新土地利用现状图的方法

对利用SPOT5卫星数据制作正射影像图的方法进行了研究，并以扬中市为例，对使用正射影像图辅助更新土地利用基础图件的可行性进行了探讨。研究发现此方法易于掌握，辅助更新效果显著。     

因特网上中外专利文献的检索

重点介绍了因特网上国内外著名的专利数据库的网址、内容和专利文献的免费检索方法。     

地籍图自动套界软件的设计

描述了基于CIS技术的地籍图自动套界软件的总体设计方案与实现方法，并对其主要功能和所使用的关键技术进行了简要的介绍。     

如何将地图集成到应用系统

介绍了用自动OLE和MapX两种方式将地图集成到应用系统的实现过程和功能特点，并对这两种方法进行了比较，指出在实际开发中可根据具体情况选择具体的集成方法。     

专利信息的利用及其Internet获取

对专利信息进行了初步分析，并介绍了通过Internet获取专利信息的方法。     

与Tchebychef网有关的讨论

文中给出了曲面上参数网为Tchebychef网的几个充要条件,并讨论Tchebychef网与Guass映射以及与之相关的一些问题.     

地质体几何造型应用

作者提出的地质体几何造型理论和方法实现了地质体的信息存储、模型构造、几何分析与图形表达，可应用于涉及地质体形态的各个地学领域（构造地质、矿床地质、矿床勘探、矿山开采等）．地测图件自动生成系统AutoGDPS的开发成功是其典型应用．基于地质体几何造型理论和方法，通过矿体边界人工圈定和勘探线剖面图手工编绘过程分析，将勘探剖面图等地测图件中各种地质体及工程元素（如断层基点、钻孔、矿带边界线、矿体、储量分析）表述为相应的地质体几何造型模型，进而给出了矿体边界自动圈定和勘探线剖面图自动生成的基本过程、定量准则和几何造型模型的建立方法，其成果AutoGDPS已应用于攀钢集团朱矿、兰矿、设计研究院和生产处等单位的生产中，大幅度地提高了地测工作效率．