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The design proposal and corelation technique for developing the Deposit Database Management System based on volume visualization technique were diseussed.

讨论了基于体视化技术的矿床数据库管理信息系统的设计思想及实现技术。该系统是一个集图形数据管理、属性数据管理和空间数据分析为一体的管理信息系统。它利用八叉树数据结构实现了数据的压缩存储;结合了传统的MIS技术和GIS技术,实现了图形和数据的有机结合

At last, extends realized volatility based on high-frequency data to realized covariance matrix based on multivariate high-frequency data.

接着,实证研究了上海股市的"已实现"波动和调整"已实现"波动的特性,并针对调整"已实现"波动的长记忆性和"杠杠"效应建立了 ARFIMAX 模型。

A new and efficient geometrical correction algorithm is proposed for MODIS IB data, and possesses of the merits of forward mapping and inverse mapping algorithms; 3. Algorithms to remove stripe noise in MODIS IB data are developed, including Fourier Transform, Wavelet Transform and interpolation method; 4. MODIS data composite algorithm is developed, and a 16-day composite map covering entire China and its outward is produced.

本文介绍了开发MODIS数据基础处理软件的基本算法和成果,主要包括:(1)用C++语言开发和实现了MODIS数据基础处理软件;(2)研究和发展了一个普适的、全新的、兼有前向映射和后向映射优点的MODIS 1B数据几何纠正算法;(3)研究和实现了MODIS条带噪声消除算法,包括傅立叶变换、小波变换和插值三种算法,并对其进行了比较;(4)研究和实现了MODIS影像合成算法,并在此基础上完成了中国及周围地区16天MODIS彩色影像和植被指数的合成。

The coordinate transformation and numerical integration was executed on the discretized tetrahedral elements based on which the 3-D MT vector-finite element method was implemented. A whole computation framework for 3-D vector-finite element method with unstructured mesh was given. Based on this some typical models were tested which has demonstrated that our algorithm could distinctively avoid problems caused by the fake solution and both the accuracy and efficiency were enhanced which made our algorithm has a bright future for further application.3. According to theory of Sobolev vector space and the discretization of Helmholtz space, the error estimate which was suitable for 3-D MT vector-finite element modeling was deduced by which the procedure of adaptive technique was guaranteed.4. Based on the fully unstructured tetrahedralization and optical strategy, the 3-D magnetotelluric h-adaptive vector-finite element method was presented through combining the error estimate. With this work, the accuracy and creditableness for 3-D MT complicatedly modeling was guaranteed.5. The 3-D magnetotelluric h-adaptive vector-finite element algorithm with unstructured mesh was implemented.

针对非结构化的四面体单元,采用坐标变换和数值积分方法,实现了MT三维矢量有限单元分析,建立起基于非结构化网格的三维MT矢量有限元计算流程,并对典型模型和国际标准电磁模型进行了数值模拟,结果对比和分析表明,基于非结构化网格的三维MT矢量有限元不仅消除了节点型有限元的伪解,而且具有很高的计算精度和速度,有广阔的应用前景。3、根据Sobolev函数的向量空间和Hemlholtz空间的分解,推导出基于残差的三维大地电磁矢量有限元后验误差估计公式,为三维大地电磁自适应矢量有限元数值模拟的实现奠定了基础。4、在完全非结构化四面体单元剖分及优化基础上,结合三维大地电磁矢量有限元后验误差估计公式,提出了基于非结构化网格的三维大地电磁h-型自适应矢量有限元计算策略,保证了对复杂大地电磁模型数值计算的精度和可靠性。5、实现了基于非结构化网格的三维大地电磁h-型自适应矢量有限元计算流程,对典型模型和国际标准电磁模型进行了数值模拟。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下:●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法,即首先求出多路信号之间的互相关,进而得到互功率谱密度矩阵,然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响,并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来,最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数,利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集;●提出了一种确定FH信号检测门限的策略,该策略不仅使得检测门限能够通过理论计算得到,而且还显著地抑制了非跳频信号的干扰,从而能有效地检测出FH信号;●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法,即首先利用宽带空间谱测向技术得到接收信号的DOA,然后采用宽带波束形成技术对特定方向进行空间滤波,实现多个信号的分离,最后分别提出了两种FH信号的盲检测和参数盲估计方法,第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号,第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号;●将空间插值的概念和宽带波束形成技术结合起来,提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

Finally, researched, designed and implemented of the ETL metadata management system based on CWM,and introduced the web framework of the whole system, the overall scheme and the key technologies used in the implementation.

最后,研究、设计并实现了基于CWM的ETL元数据管理系统,并对系统WEB框架、总体实现方案以及实现过程中用到的关键技术做了详细的介绍。

The key issue of decimation is how to realize the digital filter before decimation, especially for design and implementation of multistage decimation filter.

实现抽取的关键问题是如何实现抽取前的数字滤波,特别是多级抽取时滤波器的设计与实现

In this ***, the prototype of Organization Manager, Right Manager andAccess Control Definer is designed and implemented in client, and theResource Services, User Services and Authorization Services is designed andimplemented in server. This *** also provides the main function, designmodule, detailed algorithms and data structure.

论文中实现了组织管理器、体系权限管理器、以及入程定义工具中的拜访权限和业务约束设置组件,实现了工作流执行服务中的资源服务、用户服务、授权服务组件,并详细描述了上述组件的主要功能和相互调用关系,给出了详细的实现计划、主要算法和相关数据构造。

Actualization of individual account is a transition of social insurance system from pay-as-you-go and social-planning system to the combination of social planning and individual account. It is desired to deal with the defrayal crisis caused by the increasingly severe situation of aging of the population as well as to realize individual rights to own their own accounts. It is also the prerequisite to the market-oriented investment and operation of the funds in individual accounts in order to preserve and increase the value.

个人账户实账化是实现由现收现付、社会统筹的社会保险制度向社会统筹与个人账户相结合的社会保险制度转变,以应付我国日益严重的人口老龄化带来的支付危机的要求;是实现个人对个人账户权益的需要;是开展个人账户基金市场化投资运营,实现保值增值的前提。

Different to the conventional information communication, Information intercepting technique have to be faced with the following basic difficult problems: the blind recognition of the parameters of the communication; the blind recognition of the parameters of the signal; how to efficiently process the fading signal which power is under the receiving threshold of the conventional communication; how to demultiplex the mixed information stream with serious errors; and how to determine the value of the information etc.

有别于常规的通信技术,信息截获技术面临如下重大的基本难题:通信体制参数的盲识别;系统信号参数的盲识别;如何实现对强度低于常规通信接收门限的衰落信号的高增益;如何实现对混合信息流的高容错同步分路;以及如何实现对信息价值的判定。

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推荐网络例句

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。