查询词典 queuing problem

The problem that the conformal Gauss curvature equation may have a solution for every nonegative Holder continuous function K is also an open problem.

当预定的函数K取正值时，共形高斯曲率方程解的存在性命题作为一个猜测至今未得到解决。

Based on the Saint-venant equations describing the channel flow movement, the nonlinear algebraic equations derived by the use of Preissmann weighted implicit four-point scheme are solved with the Netwon-Raphson method. A combined Gauss main-element elimination method with compress-storage technique is proposed. The relaxation iterative method for solving branch river networks is extended, which can turn the problem of any complex river networks into the problem of a series of single rivers. The coupling of hydraulic model with water quality model is built up. The combined model was applied to a large complicated river networks with numerical hydraulic structure which influenced by strong tide, storm and heave rain. Visualization of computational results is realized by means of MapInfo, which displays the computational results in fast, convenient and accurate way.

水力模型以描述河道洪水波运动的Saint-Venant方程组为基础，用Newton-Raphson方法直接求解按Preissmann加权四点格式进行离散所得的非线性代数方程组，提出了压缩存贮形式的Gauss列主元消去法并对数值解的收敛性进行了讨论；将支流流量的松弛迭代方法从树状河系推广到了环状河网，使任意复杂河网水力计算的问题都可化为一系列的单一河道的水力计算问题；建立了水力模型与水质模型的联接，初步应用于既有洪水、暴雨、强潮等综合影响，又存在多种水工建筑物及水力调度问题的大型复杂河网中的非恒定流水力、水质计算问题；利用MapInfo对计算结果的可视化进行了研究，有利于决策者快速、方便、准确地作出决策。

One is the existence problem of real symmetric solutions of the general algebraic Riccati equation , the other is the optimal output feedback problem under the LQ index.

此外，本文还涉及了两个控制理论界多年来受到广泛注意和研究的难题；其一是一般代数Riccati方程的实对称镇定解的存在性问题：其二是线性二次型指标下的直接最优输出反馈问题。

Thus, the -general structure topology optimization problem can be regarded as a material interface tracing problem.

其次在结构拓扑优化中还引入了黎曼测度下的平均曲率流正则化技术，以保证计算结果材料界面的光顺性，并有助于提高拓扑演化过程中的数值稳定性。

But the introduction of new basis functions also poses a new problem, that is, the complexity of computation of two matrixes' elements in the derivative generalized eigenvalue problem in NMM. Fortunately we found a recursive algorithm and solved it concisely.

在引入幅度基函数和斜度基函数后，广义特征值问题中矩阵元素的计算变的繁琐，我们运用一种递推算法简洁地解决了这个问题。

For reducing boundary distortion area, the elevations of grid DEM are viewed as a discrete sequence under a generalized coordinate, so that the boundary problem of two-dimensional discrete wavelet transform is turned into the boundary problem of one-dimensional discrete wavelet transform, which not only greatly reduces the boundary distortion area, improves the precision of reconstructed DEM data near the boundary, but also decreases the number of zeros adding on the boundary for wavelet transform, and boosts the compression ratio. On the basis of analyzing the distribution characteristics of coefficients in low and high frequency bands, a mixed entropy coding plan is applied, and a high efficient quantizator called"self-adaptive hard threshold"is established, which is helpful for improving the precision of the reconstructed DEM data and for enhancing compression ratio.

为了减小小波变换山区格网DEM数据压缩中边界失真区域，将山区格网DEM高程值视为广义坐标下的离散随机序列，把二维离散小波变换中的边界问题转换为一维离散小波变换中的边界问题，不仅大大减少了小波变换边界失真区域，提高了重构DEM数据边界点的精度，而且减少了边界补零个数，提高了压缩比；通过对山区格网DEM数据小波变换低频区和高频区变换系数分布特点的分析，采取了霍夫曼—游程混合熵编码方案，设计了高效、低失真的"自适应硬阈值"量化器，即对低频区变换系数不进行量化，直接进行霍夫曼编码；对高频区变换系数则先用"自适应硬阈值"方法量化处理，再进行游程编码。

In the paper, many further discussions about the optimal control problem,the approximate optimal solution to generalized time optimal control problem and stability of the degenerate systems with delay are considered and some important and meaningful results are obtained in it.

而本篇论文则是对具有时滞的退化系统的最优控制问题，广义时间最优控制问题的近似最优解和稳定性问题进行了讨论并且得出了一系列的重要成果。

Promoting the successful construction of GIP is very important to rapid economic development, people's livelihood improvement and social harmony. The problem of project has been focused in the research field of project management theory for decades. Many scholars have carried on a large amount of research on the successful standards of the project and the key factors that affect the project's success. However, the research on the problem of GIP success in our country still remains very weak, it is necessary for us to explore and advance the research achievements of GIP for the reason of cultural gap and characteristics of GIP itself.

项目成功因素的研究是近几十年项目管理理论研究的一个重点，国外许多学者围绕项目成功标准和影响项目成功的关键因素进行了大量的研究，但由于文化环境差异和政府投资项目特点等方面原因需要我们对项目管理理论中已有的项目成功因素研究成果在我国进行新的探索和创新，可是我国学者对政府投资项目成功因素的研究仍然十分薄弱，因此，研究我国政府投资项目成功因素还具有重大理论意义。

The mechanism of the impact of satellite-city on urbanization is industrialization and the third industry development and so on. Finally, with careful analysis on the problem in the development of satellite-cities, The article expound the question existing of satellite city : the disparity in urban and rural areas is great, the great difference between satellite-city and central district, the problem of the peasantry who lost glebe and so on. The article defined the function of each satellite-city and put forward policy advice.

本文也分析了卫星城市推动城市化的原因：工业化、第三产业的迅速发展，产业结构的调整等；最后分析了成都卫星城在发展中存在的问题以及发展的制约因素，如：卫星城的二元性特征明显、卫星城与中心城市相差悬殊、失地农民问题等，最后根据各个卫星城的比较优势作出了功能定位，从整体上提出了发展的建议。

In this thesis,through use for reference relating law of Hongkong and Singapore,probe into the problem of law perfected in avoiding real estate bubble,these problems including the system of glebe management,using fashion of exploitation fund of real estate,the finance system of real estate,the market trade of real estate,the revenue innovation of real estate and the configuration problem of real estate.

本文通过借鉴我国香港地区和新加坡的有关法律，在土地管理制度、房地产开发资金的使用方式、房地产金融体制、房地产市场交易、房地产税收改革以及住房结构性问题等方面，探讨我国防治房地产泡沫的法律完善问题。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。