三峡库区城镇迁建规划的几个问题初探

三峡库区百上迁建城析址处于山区，其地形，地质情况复杂，城镇迁建设计必须顾及山地特点，因地制宜，依山就势，避免大挖大填，避免产生人为的不良地质问题，城镇道路 城镇的基本骨架，具有多种功能，涉及到城镇的建筑布局和总投资。     

煤层气区评价参数及勘探方向

煤层气勘探选区评价的关键参数是煤层的含气量和渗透率。沉积作用、成岩作用、构造作用和封闭作用地这两个参数有影响。基于对各地持因素的综合分析，认为目前煤敢探重点区域应是华北，其次是华南；重点选区为鄂我斯贫地国中部低煤阶区、鄂尔多斯盆地东部中煤阶区、沁水盆地环斜坡带中一高煤阶区、豫西向斜带高煤阶区、钱西－濮阳斜皮带中煤阶区，冀中－冀东斜坡带中煤阶区、淮南－－淮北复向斜断块区中煤阶区和六盘水梳状褶皱复向斜     

机器人服务角的分析

本文着重解决机器人绕工作空间内任一点的服务角计算问题.首先,本文分析了服务区的一些性质;其次,讨论了机器人非线性方程组的解;最后,提出了一种求解服务区边界及灵活工作空间特性系数的新方法.     

两步动态编程识别连续单词的算法实现

传统的DTW算法大多用来识别孤立单词,并已极具实用价值,但是这种方法不适用于连续单词的识别。利用两步动态编程算法解决了连续单词的识别问题。两步动态编程算法首先把每个参考模型与测试串的一部分匹配,然后根据获得两者间最小距离的次序将参考模型个体拼接起来当作辨识解。给出了两步动态编程算法的基本实现方法,并进行了实验验证。     

具有界滞量非线性滞后型微分系统的实用稳定性判据

将实用稳定性概念将其引入非线性时滞系统之中，通过建立一系列的比较原理，获得了具有界滞量非线性滞后型微分系统实用稳定或实用不稳定的简明判据．     

黄河中游区高原地质环境对黄河泥沙的影响

从工程地质角度，通过对黄河中游高原区的地形地貌，地质构造，岩性特征以及水文地质条件等状况的分析，研究了黄土高原黄土堆积的力学性质，结构特征和侵蚀的基本原因，黄河中游地区河流泥沙骤增的原因是多方面的，既有人类对环境的干扰破坏，更是因为该区复杂的地质构造，特殊的岩土层特征和干旱的气候条件综合作用的结果。     

Surface Tension Prediction Using Characteristics of the Density Profile Through the Interfacial Region

A simple surface tension estimation technique is described that is based solely upon the characteristics of the density profile in the interfacial region and the physical properties of the molecules in the fluid. This method, denoted free energy integration (FEI), links interfacial tension to known interfacial region density profile characteristics obtained via experiment or simulation. The general FEI methodology is provided here, and specific relations are derived for a methodology that incorporates the Redlich–Kwong fluid model. The Redlich–Kwong based FEI method was used to predict interfacial tension using the density profile characteristics of molecular dynamics (MD) simulations of argon using the Lennard–Jones potential, diatomic nitrogen using the two-center Lennard–Jones potential, and water using the extended simple point-charge (SPC/E) model. These results for argon compare favorably to values calculated by the traditional virial approach, known values from the literature using the finite-size scaling technique, and ASHRAE recommended values. In addition, the FEI predictions agree well with ASHRAE values and predictions using the virial method for nitrogen for the simulated range of temperatures in this study, and for water for reduced temperatures above 0.7. In addition, the FEI method results agree well with other established theoretical techniques for predictions of the surface tension of sulfur hexafluoride close to the critical point.     

动态核在城市道路交通监控管理中的应用

为了完善网络系统科学的动态核度理论及其在道路交通网监控管理中的应用，给出有向连通网络核和核度的计算方法，提出动态流网络系统动态核的概念。城市道路交通网络系统为有向连通动态流网络系统，据此给出其动态核和核度的计算方法，以及城市道路交通网动态核的计算实例，说明该方法的实用性。     

Highly efficient avalanche multiphoton luminescence from coupled Au nanowires in the visible region

We report highly efficient avalanche multiphoton luminescence(MPL)from ordered-arrayed gold nanowires(NWs).The time-average excitation intensity I_(exc) is as low as 5.0-9.1 kW/cm~2.The intensity of avalanche MPL I_(MPL) is about 10~4 times larger than that of three-photon luminescence,the slope ■logI_(MPL)/■logI_(exc) of avalanche MPL reaches as high as 18.3 and the corresponding polarization dependence of I_(MPL) has a form of cos~(50)■_p.The emission dynamics of avalanche MPL and three-photon luminesc...     

印刷线路板测试点自动生成算法研究

根据我国ＰＣＢ制造业的特点，提出了一种ＰＣＢ测试点自动生成的算法，该算法经厂家实用验证，效果良好，具有手工标注测试点无法比拟的优点．