查询词典 analysis of time series

According to results of cantharidin structure-activity relationships, a series of cantharidin derivatives for the first time were designed, synthesized and characterized by IR, NMR and elemental analysis.

用IR、〓H NMR初步证实了斑蝥素衍生物和DCC生成稳定中间体是使含有芳香羧酸的斑蝥素衍生物与氨基葡萄糖及其衍生物不能进行反应的主要因素。

Based on a series of analysis for the relevant data during the period of 1950~1989, the relationship between the ozone layer variation/solar activity and the periodically prevalent features of two kinds of human infectious diseases in China, the epidemic cerebrospinal meningitis and human plagueepisodes, is presented and analyzed for the first time in this paper.

通过对1950~1989年间一系列有关资料进行分析，首次研究和报道了臭氧层变化、太阳活动与流行性脑脊髓膜炎及鼠疫传染病性病率流行周期特徵之间的关系。

Based on a series of analysis for the relevant data during the period of 1950~1989, the relationship between the ozone layer variation/ solar activity and the periodically prevalent features of two kinds of human infectious diseases in China, the epidemic cerebrospinal meningitis and human plagueepisodes, is presented and analyzed for the first time in this paper.

通过对1950~1989年间一系列有关资料进行分析，首次研究和报道了臭氧层变化、太阳活动与流行性脑脊髓膜炎及鼠疫传染病发病率流行周期特征之间的关系。结果表明，从较长时段看，臭氧层变化、太阳活动与ECM、HP年发病率间存在着较为密切的相关关系；从较短时段看，发病率的季节变化与某些气象因子的变化有一定的关系。此外，本文还提出了一个解释这两类疾病周期流行机制的简单模型

In this thesis, we theoretically analyze the fundamental reasons of profitability of technical analysis, stating the time-varying characteristic of expected return series and predictability from historical returns and other factors.

本文从理论角度分析了技术分析有效性的基础，从历史收益率等角度出发阐述了收益率的时变性特征，结合收益率波动的记忆效应，为技术分析的核心前提假设即价格趋势的存在提供了国内外研究的实证支持。

The time-domain response of the induced currents on a scattering object irradiated by a plane wave with a Gaussian pulse in time is expanded as an associate Hermite series in this paper. Using the isomorphism of the associate Hermite function and its Fourier transform, the frequency-domain information can be obtained similarly to the time-domain expansion. According to the corresponding relation between time-domain analysis and frequency-domain analysis, and using the early-time response and the low-frequency information of the induced currents, the non-known coefficients in the expansion series can be decided. The entire responses of the induced currents on the scattering object in both time and frequency domains can be obtained at one time by simultaneous extrapolation computation using both the early-time response and the low-frequency information of the induced currents.

摘要首先根据散射体在高斯脉冲平面波激励下感应电流的能量几乎全部集中在时间轴和频率轴上的有限范围内，该文将时域响应展开为系数待定的连带Hermite级数的叠加，并根据连带Hermite函数的傅里叶变换的自反性，得到与时域响应形式类似的频域响应；然后利用时域方法和频域方法分别计算散射体上感应电流的早时响应和低频信息；最后经过时域和频域联合外推计算，由早时响应和低频信息确定时域和频域响应的待定系数，从而获得了整个时域和频域的完全响应。

Based on a series of signal process and noise source identification techniques, especially the major noise source identification methods, such as expurgation method, sound intensity analysis, spectrum analysis vibro-acoustic correlation analysis and so on, the pass-by noise control of SC7080A and SC6360B are studied in detail. By the roadway and dais experiments, the major noise and radiating parts are identified and some economical controlling methods are made. For the SC7080A, to control the emissing noise from the intake and shell vibration of air cleaner, a intake muffler is installed between the air cleaner and intake valve. Based on the theory of Helmholtz resonator, One three-parallel-connected resonant silencer is designed and trial-manufactured. For the SC6360B, the attenuation performance of exhaust muffler in high frequency region is improved. To reduce the vibration noise of shell part, the structure of oil sump tank, exhaust manifold shield and exhaust manifold shield are analyzed and improved. At the same time, some measures, such as sound absorption, sound insulation, are taken to reduce the noise of engine surface emissivity and a sound shield is designed.

本文首先综述了目前国内外汽车加速噪声控制的现状、主要方法和技术措施，在此基础上，结合SC7080A和SC6350B汽车的车外加速噪声水平及现状，综合运用分别运行法、声强法、频谱分析法、声振相干函数法等现代噪声源识别方法，对SC7080A和SC6360B汽车进行了准确详细的车外加速噪声源识别并提出了经济可行的控制方案，针对SC7080A，主要在空气滤清器和进气阀门之间的进气管道上加装进气消声器，抑制空气滤清器壳体表面和进气口两处的噪声辐射，根据Helmholtz共振腔原理设计了三腔并联旁支型共振消声器，并进行了工程化设计和试制；针对SC6360B，主要改善了排气消声器在高频段的消声性能，对罩壳类零件进行了结构改进，降低了其表面噪声的辐射，并对发动机舱进行了吸声、隔声处理，设计了发动机隔声罩。

The main body of a book set off from the clothing design angle , be tied in wedlock each other by starting to pertinent theoretical analysis , linking the clothing design basal principle with, marketplace , put into practice by cooperating with project of the local TV station, thereby, sum up out a set of the new law that TV variety show anchorperson clothes and ornaments designs , form a set of new method that clothes and ornaments designs to this type thereby:(1) establishes anchorperson clothes and ornaments style , establishes anchorperson clothes and ornaments expressing priority;(2) union anchorperson oneself qualities characteristic , image characteristic , entirety design;(3) sets off from to accepting numerous angles , studies mentality, is had the design being aimed at by numerous appreciation of the beauty;(4) is in anchorperson clothes and ornaments colour being going , seek in the unification change to come to consider style and hue from entire stage indeed at the regular time;(5) heddle skill entertainment anchor-man clothes and ornaments detail designs that priority chooses high-quality material on clothing collar headquarter , shoulder , bosom, emphasize that the meticulous handicraft is right away especially important;(6) when has being anchorperson more in one program, clothes and ornaments designs that emphasizing that the series feels more.

本文从服装设计的角度出发，通过对相关的理论分析入手，结合服装设计的基本原理，与市场相结合，通过与地方电视台的项目合作实践，从而总结出一套电视综艺节目主持人服饰设计的新规律，从而形成对此类型服饰设计的一套新方法：(1)确立主持人服饰风格，确立主持人服饰表达重点；(2)结合主持人自身气质特点、形象特点，整体设计；(3)从受众的角度出发，研究受众的审美心理，有针对的设计；(4)在主持人服饰颜色的确定时，要从整个舞台的风格和色调来考虑，在统一中求变化；(5)综艺娱乐节目主持人服饰的细节设计重点在服装的领部、肩部、胸部上，选取高品质的素材、强调精细的工艺就尤为重要；(6)在一台节目有多个主持人时，服饰设计更强调系列感。

The base data of this article are collecting by seasonal changes in the airline rather than traditional calendric statistics, for holding the market demand accurately. At the same time, a series of methods such as multi-variable statistical analysis, price elasticity of demand analysis and input-output analysis are introduced to evaluating and choosing the base-airport and routes for Shenzhen Airlines, and procedured by SPSS to solve the base-airport choosing model.

为了更好的把握市场需求以及有效的规划航线网络，本文并未采用传统的日历年数据，而是采用与航班计划密切相关的航季年度数据；同时，为了更科学准确的选择深航的基地和航线，本文引入了多元统计的综合评价、价格需求弹性分析、投入产出分析等研究方法，对深航的航线网络规划问题进行了深入的研究，并借助SPSS软件加以实现。

This could be a fascinating method for the practical syntheses of chiral synthons as valuable building blocks and important medicinal intermediates.3.Series of novel optical pureγ-aryl-1H-1,2,4-triazole derivatives were designed and synthesized by using the chiral auxiliary(Oppolzer\'s sultam),and all these target compounds were structurally characterized by ~1H NMR,~(13)C NMR,MS and elemental analysis,at the same time,some representative compounds have been elucidated by X-ray diffraction analysis.

应用手性辅剂樟脑磺内酰胺的手性诱导作用，设计合成了一系列光学纯的γ-芳基-1H-1，2，4-三唑类衍生物，所有目标化合物都采用了~1H NMR、~(13)C NMR、MS和元素分析进行了结构表征，同时也获得了部分代表性化合物的晶体结构，进一步确证了化合物的结构。

At the same time, a series of simulation and analysis are maked by the tool of SpectreS and Hspice. And a series of code desity and FFT analysis for system static and dynamic performance are maked by Matlab.

同时利用SpectreS和Hspice仿真工具对各模块和整体电路进行了详细的仿真分析，并利用Matlab软件对ADC的静态和动态参数进行了计算。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。