数值分析

By utilizing the theory of numerical processing, digital frequency spectrum analysis and multi-rate digital signal processing, this paper focuses the research on mechanism of the testing error, the compensation of testing error in the field of sampling technology, nonsynchronous sampling, nonuniformly sampling, and puts forward some new analyzing, compensation and realization methods.

本论文通过运用数值处理、数字频谱分析和多抽样率信号处理的有关理论和原理，对采样技术、采样的非同步方式和采样的多通道方式中的测试原理、测试误差产生机理、测试误差补偿及其应用技术等主要环节进行了深入的研究，提出了一些新的分析与处理方法，建立了有关测试误差分析与补偿的预估理论和实现方法。

The wavelet time-frequency properties of the uncracked rotor and the cracked rotor were discussed by the continuous wavelet time-frequency analysis algorithm. A new algorithm using the wavelet time-frequency analysis algorithm to detect the crack was proposed. The influence of the sampling frequency on the wavelet time-frequency analysis algorithm was analyzed through the numerical simulation research; the valid sampling frequency was presented.

利用连续小波时频分析方法，讨论了裂纹转子与无裂纹转子的小波时频特性，提出了利用小波时频分析方法识别裂纹的新方法；数值仿真研究了采样频率对小波时频分析方法的准确性和有效性的影响，并给出了建议性的采样频率。

By adopting the calculating analysis method of elastic-plastic three-dimensional FEM numeric simulation, this paper makes a simulation analysis on the structure stability of the shallow cover and unsymmetrically loaded parts in Tongyoushan tunnel, mainly simulates the effects caused by different construction orders on surroundings and supporting structure stability, and it centers on the analysis on the weak part, the midwall in the lining of the connecting-arch tunnel.

采用弹塑性三维有限元数值模拟计算分析的方法，对桐油山隧道浅埋、偏压地段结构稳定性进行了模拟分析，主要模拟了不同施工顺序对围岩及支护结构稳定性的影响，重点对连拱隧道整体衬砌中的薄弱环节－中墙进行了分析。

Starting from the output signal-to-noise ratio of vibration tables, the basic requirements of background noise of the foundation are determined, then the dynamic analysis of the foundation for tables and a laser vibrometer, and the static analysis of the foundation for the laser vibrometer are done with finite element method.

首先以振动台台面输出信噪比为出发点，确定了超低频标准振动台基础噪声的基本要求；然后采用有限元分析的数值方法，分别对振动台基础与激光测振仪基础作动力学分析，再对激光测振仪基础作静力学分析。

This thesis analyzes the listed companies' current financial standing,taking into consideration the external social economic factors,enterprises' internal economic state,the authenticity of financial data, as well as the rationality of analysis methods,and works out a financial analysis indicator system for listed companies,which,with concrete indicator figures,reveals the listed companies' debt paying ability,operating ability,profit-making ability and the ability to ensure sustainable development in addit...

施国柱；上海电视大学金融与会计系上海；文章通过分析我国上市公司现时的财务状况，并充分考虑外部社会经济因素、内部企业经济因素、会计信息的真实性因素以及分析方法的合理性因素等问题，设置出一套完整的上市公司财务分析指标体系，用具体的指标数值来全面揭示上市公司的偿债能力、营运能力、盈利能力和可持续发展能力，以真实反映上市公司的经营绩效，并客观地做出科学评价。

In the later half of the article, we adopt random analysis method to make preliminary study to the backfilled foundation and then analysis random influence factors that effect the settlement degree of gantry crane foundation. We used JC method to study the reliability of the settlement and Non-Uniform settlement degree of gantry crane foundation based on factors which influence the last settlement degree of railway foundation, and the same time, we utilized backfill construction parameter and the actual statistics data of earth backfilled on site.

本文后半部分，应用随机分析方法对该回填基础进行了初步的研究，分析了影响高架门机基础沉降量的随机影响因素，确定了沉降分析的计算模型，结合影响轨道基础最终沉降量的多种因素，利用施工现场实测回填土土性数值和回填施工参数，对高架门机基础沉降量和不均匀沉降进行了可靠性评价。

Secondly, the preliminary models of grouting and drainage curtains, and the boundary pre-adjustment method are presented to further perfect the network seepage flow analysis method of rock masses. Then they are applied to the network seepage flow analysis of the Xiaowan high arch dam abutment and rock foundation in various cases.

其次，提出了工程中防渗帷幕和排水孔幕的数值模拟方法，以及岩体网络渗流分析的边界预调整法，进一步完善了工程岩体的渗流分析方法，并将其应用于小湾高拱坝多种工况下的坝肩和坝基岩体网络渗流分析。

Through analyzing the work characteristic and the work mechanism of the interface in this research paper, bonded rebar technique is applied to the bonding treatment of the interface, the reformative method of enlarging sectional areas is proposed, and the work mechanism of the anchor bar in the interface is analyzed. The work mechanism of the reformative method of enlarging sectional areas and the interface mechanical performance have be more systematical analyzed and studied with the finite element numerical simulation method, the structural testing method, and combing project practice. Based on that, the suggestion formula of shear and tension bearing capacity for the old and new concrete is put forward.

本研究论文通过分析新旧混凝土界面的工作特点及工作机理，将化学植筋技术应用于新旧混凝土界面的粘结处理，提出改进的加大截面加固法，分析了锚筋在新旧混凝土界面上的工作机理；运用有限元数值模拟方法和结构试验方法，并结合工程实践，对改进的加大截面法的工作机理及界面受力性能进行了较为系统的研究分析，提出了新旧混凝土抗剪、抗拉承载能力的建议公式；根据研究结果，提出了改进加大截面法的设计原则和施工工法，并在工程应用中取得了良好的效果。

This article study the most three factors of influence in pre-splitting blasting , which are powder capacity per meter 、 spacing of hole and decoupling. On the basis of ANSYS/LS-DYNA and establishing 3D model about two pre-splitting holes, numerical value sumilate expanded process of the crack , then estimates effect of the rock crash by analyzing stress , otherwise estimates effect of pre-splitting blasting by expanded picture .

本文研究了预裂爆破中影响最大的三个因素：线装密度、周边眼间距及周边眼的不耦合系数，并利用动力有限元分析软件ANSYS/LS-DYNA，建立两预裂孔爆破的三维模型，数值模拟出预裂爆破裂缝扩展过程，然后通过应力值的分析来判断岩石的破碎情况，另外利用预裂缝的扩展图分析预裂爆破的效果。

Based on data from censuses,applying survival analysis and numerical fitting method,as well as other statistics and contrast analysis,the paper explores underreporting and overreporting in the 2000 census and adjusts the population size and structure.

以人口普查资料为基础，运用人口存活分析方法和数值拟合思想，并辅之以其他统计数据和对比分析方法，分析五普数据中的重报和漏报，对普查人口总量和结构进行调整。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。