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On basis of recursion theory of deep optimization traversal, stimulated the logical graph of water project by visual programming technology, and applied it to the west water source project of Weihe valley.
运用图论中节点连接表法描述各水源之间的逻辑联系关系,探索了分析流域拓扑结构的基本思想;以深度优先遍历的递归理论为基础,采用可视化编程技术,用计算机模拟了与研究对象有水力联系的水源工程逻辑结构图,并以渭河流域西部水源工程为研究对象进行了实现。
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In order to overcome the problem that the determination of non-scale interval definite and fractal dimension's computation were affected by human factors, the new method of scale transformation was presented according to the principles of notable regression effect, the smallest residual sum of squares and weak autocorrelation of residual error, which providing reference for the determination of study scale.
本文针对分形理论在描述监测站网分布时易受人为因素影响问题,提出了以回归效果显著,残差平方和最小和残差自相关性小为原则的确定尺度转折点的方法和基于GIS技术的点状数据确定尺度转折点的基本步骤,以期为研究尺度的科学确定提供参考。
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In Chapter 5,the pyrolysis of substituted six-membered ring model compound 4-methyl pyridine has been investigated.Instead of detail theoretical analysis of the reaction mechanism,the general results have been proposed from the products distribution and the combination of the pyrolysis investigation of its analogous pyridine.The major products are H_2,C_2H_2,C_4H_2,C_3H_3N and HCN,here HCN is not a primary initial product at low extent of decomposition.The mole fraction profiles of products have been obtained from the near threshold ionization.The pyrolysis of 4-methyl pyridine is initiated from the methyl abstraction and hydrogen abstraction procedures which are associated with the understanding of the soot formation and the NOX precursor correspondingly.
主要产物为H_2,C_2H_2,C_4H_2,C_3H_3N和HCN,其中HCN为非低温时的热解产物;通过近阈值电离并导出物种随温度变化的摩尔分数曲线,更详细地定量地描述了产物随温度的变化。4-甲基吡啶热解主要从母体脱甲基和脱氢两个初始反应出发,一种趋势是形成大质量数的苯并或杂环的多环化合物,有助于了解炭黑形成过程中的复杂化学过程;另一趋势是开环生成小的碳氢和腈类物质,实验得出的含氮物质的种类及随温度变化有助于了解NO_x的前驱物质的形成及其变化规律。
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Faults common to all breeds are as undesirable in the Schipperke as in any other breed, even though such faults may not be specifically mentioned in the standard. Size, Proportion, Substance nSize--The suggested height at the highest point of the withers is 11-13 inches for males and 10-12 inches for bitches.
舒柏奇犬的其他方面的缺陷与其他品种一样不合需要,尽管这些可能在该品种的标准中没有详细描述出来。nn n尺寸:雄性肩高约为11~13英寸;雌性肩高约为10~12英寸。
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This paper sententiously introduces features of IA , family gateway and the functional distribution between them, describes the common design method of simulating family gateway by using SX52, and especially discusses how to extend hardware and soft-ware on SX52 to simulate functions of family gateway and IA .
本文简要介绍了信息家电和家庭网关的特点以及它们的功能分配问题,描述了利用SX52单片机模拟家庭网关的通用设计方法,具体对如何在SX52上扩展软硬件模拟家庭网关功能和信息家电功能进行了重点分析讨论,并以模拟电冰箱为例做了具体实现,为后续的家庭网关和信息家电研究提供了基础实验平台。
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This paper aims at the prominent issue that current models of spatial topological relations can not represent complex object, among which 9-Intersections Model (9IM) is well known. Therefore, taking cadastral data as example, one model of topological relations between complex and spatio-temporal objects based on 9IM is put forward. And the improved sweep-line algorithm is designed. Specific studies as follows:(1)According to the concepts of point set topology, the author distinguishes the complexity of the object, redefines the spatial point, line and region. For instance, in the simple region, concave one is more complex than convex, composite regions can be composed of many parts or with holes, and so on.
本文针对当前空间拓扑关系模型无法表达复杂对象的突出问题,以地籍对象为实例,以9I模型为基础,探索了一种适合复杂对象和时空对象的拓扑关系表达模型,较好地解决了地籍对象中各类要素间拓扑关系的描述和应用,实现了地籍变更中变化语义类型的推理和历史回溯;通过对现有的拓扑关系计算方法进行了改进,设计了相关算法,给出了C语言程序示例;最后通过实验系统的实现,验证了模型和算法的可行性。
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A layered multimodal network diagram for routing purposs is built. The viable routing problem is then formulated as a generalized shortest route problem with penalty factor, aiming at minimizing the cost of the total transportation in multi- modal networks. Assumptions and detail descriptions of the model are presented. Compendious solution thought and consultable algorithms are provided.
通过构建直观的联合运输网络图,以总运输成本最少为优化目标,将多方式联合运输合理路径的选择和优化问题转化为含有超期惩罚因子的广义最短路模型,对模型的假设和数学形式做了详细的描述,并提供了简要的求解思路和参考算法。
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XML is a simplified version of SGML (Standard Generalized Markup Language). As a simple and flexible standard format, it provides an effective means for Web-based application. Meanwhile, Adobe Flex 2 is a rich Internet application framework based on Adobe Flash that enables you to productively create beautiful scalable applications.
XML是一个精简的SGML,作为一个简单而灵活的标准格式,为基于Web的应用提供了一个描述数据和交换数据的有效手段;而随着Web2.0的升温及RIA的广泛应用与发展,Adobe公司推出的Flex为开发人员构建下一代丰富互联网应用提供了无限的可能。
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Endoscopic Describing the type of development of a plant embryo in which the inner cell formed by the first division of the zygote develops into the embryo, while the outer cell develops into the suspensor.
内向极性:该名词用来描述植物胚胎发育的一种形式,指受精卵第一次分裂形成的内细胞最后发育为胚胎,外细胞发育为胚柄。
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Under the frame of Hamiltonian, the propagation of seismic wave is a symplectic group transformation with one parameter and consequently, the numerical calculation methods of the propagation ought to be symplectic method.
在哈密顿表述下,地震波标量方程描述的波场随时间的演化过程为波场在单参数辛群作用下的变换过程。因而在计算地震波场随时间的演化时,为保持系统的辛性质,应采用辛几何算法。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。