查询词典 versatile automatic data exchange

Data dynamic exchange and real-time question were introduced and analyzed, several dynamic exchange technologies were mainly compared, and the use of ActiveX technology in the remote monitoring and control system was analyzed in details.

对数据动态交换及实时性问题进行了介绍和分析，对比了几种主要的动态交换技术，并详细分析了ActiveX技术在远程监控系统中的使用。

Environment radon is mainly from rock and soil in geological environment, but the research is not connected with geological environment now. On the basis of physical field, the theoretical distribution model of radon in soil and exchange model of earth—air are set up by using Fick diffusion law and Dacy law, and then the research of environment radon is linked with geological environment. This paper described how the evry parameter of the theoretical model influence the radon concentration in air. The results of research indicat that molecule diffusion of radon is different from it's eddy form. Under the condition of surface radon source, the model experiment is used to study the transportation and distribution of radon in medium. The data of experiment show the relationship between radon and depth can be described by exponent. If the radioelement is well—distributtion, the concentration of radon in different depth or in different point at the same depth change with time, but the accumulated exhalation amount of radon at different point on the surface of model are close in relative long time. The author studied the exchange of radon between mediums and verified the theoretical models too.

环境氡主要来自岩石、土壤，而目前环境氡研究中与地质环境结合很少，为此作者以物理场为基础，运用气体运移的费克扩散定律和达西定律，建立起壤中氡浓度分布与大地—大气间氡交换理论模型，首次在理论上将环境氡与地质环境结合起来；论文中从理论上讨论了模型中各参数对空气中氡浓度的影响，发现空气中氡运移的分子扩散方式和湍流扩散方式存在明显差异；通过面状氡源条件下的氡运移模型实验，研究了介质中氡的运移与分布，实验数据表明氡浓度随深度的变化规律可用指数函数描述，在放射性元素分布均匀的条件下，介质中不同深度和同一深度不同点的氡浓度随时间而变，但介质表面不同点在较长时间内向空气中累计释放的氡的量是相近的；同时研究了不同介质间氡的交换，并验证了所建立的理论模型；运用理论模型预测青岛市城区壤中氡浓度、江西临川一住宅区空气中氡浓度及江西二个测区的区域空气中氡浓度分布，取得了较好的效果。

Based on the past technology, the exchange method between ERP system and IWMS system is improved, the communicating method between base hardware and IWMS is also improved. As a result, they bring more convenience in the exchange of data between IWMS and epigenous computer or hypogynous computer.

在以前技术基础上，改进了ERP系统与IWMS的数据交换方式；改进了IWMS与低层硬件的数据通信方式，使IWMS与上位机和下位机的数据交换更加方便。

Here,we aim at the 2D graphics in MicroStat ion.By studying the task, I know more knowledge about the technology of geography information data exchange and correlative content especially, I know more about how to realize the exchange from DGN to MIF with progame.

通过本课题的研究，本人对地理信息数据交换技术及其相关内容有了更进一步的了解，尤其对如何用程序直接实现DGN和MIF两种格式的转换有了更好地学习和研究。

Exchange rate fluctuation directly affectschanges of import and export trades. In order to investigate the relation betweenthem, the study on the properties of exchange rate fluctuation itself is necessary. SoThis dissertation investigated the time series data of four Chinese main exchangerates, which were from April 2, 2002 to March 1, 2006.Simulation and analysiswere processed via Autoregressive Conditional Heteroskedasticity model.

汇率的变动直接影响进出口价格的变动，为研究两者之间的相互关系，必须先研究汇率波动本身的性质，因此本文考察了我国外汇市场上的四种主要汇率从2002年4月2日到2006年3月1日的时间序列数据，并用ARCH类模型对其进行拟合和分析。

Presently,USB standard has been applied widely in the migrationdata exchange and the memory,because it has many characteristic, such as it speed quickly, installment simply,the connection easy, support hotly inserts , takes the main engine resources few, and easy to expand and so on. It has facilitated peoples life, make the data exchange transportability and conveniently, at the same time stimulated the IT industry development.

当前，USB标准因其速度快，安装简便，连接容易，支持热插拔，占用主机资源少，易于扩展等特点而在移动数据交换和存储中得到了普遍的应用，真正的体现了数据交换的可移动性和便捷性，刺激了IT业的发展，便利了人们的生活。

This paper examines the relationship between liquidity risk and stock return with the trade data of the A shares in ShangHai Stock Exchange and Shenzhen Stock Exchange.The method used in this paper is two-pass cross-section regression.After decomposing the liquidity risk into systematic liquidity risk and individual liquidity risk,we find that both risks have significant effect on the stock return.

0引言近些年由于长期资本公司的倒闭以及美国国债市场当中刚发行的国债比发行很久的国债(off-the-run)等资产定价异常现象的发现，越来越多的学者认识到流动性是金融资产一个非常重要的特性，流动性资产定价一直是近来金融研究的热点问题，把流动性引入到资产定价模型当中，可以更加全面、准确的对金融资产进行定价。

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

Data mining, known as Knowledge Discovery in Databases, is defined as the nontrivial extraction of implicit, previously unknown, and potentially useful information from a great volume of data accumulations. It uses machine learning, statistical and visualization techniques to discover and present knowledge in a form being easily comprehensible to humans. Data mining is an advanced data processing technique.

数据挖掘是在数据和数据库急剧膨胀的背景下，为解决"人们被数据淹没，但却饥饿于知识"这种困境而产生的，也是数据库技术、人工智能技术、统计技术、可视化技术等发展的结果，其目的就是从大量的、不完全的、有噪音的、模糊的数据中提取出隐含在其中的潜在有用的可信、新颖并能被人理解的信息和知识，它是一种高级的数据处理过程。

In this paper a genetic algorithm four-dimension data assimilation system was applied to the more complex MM5 model, we verify the performance of the genetic algorithm assimilation system, we take the a heavy rainfall process during 04-05, July, 2003 as the experimental research object, and carry out data assimilation experiment of actual observation data, compare the experimental results of the genetic algorithm assimilation system and MM5 adjoint model assimilation system with the experimental results without assimilation, the following is the result:genetic algorithm assimilation system is used not only in a barotropic primitive equation but also in the complex model, MM5, for example, in the ideal experiment the result of the genetic algorithm assimilation system is better than the MM5 adjoint model assimilation system, in the assimilation experiment of actual observation data, whichever assimilation system is used, the initial field of numerical prediction model is effectively improved and the prediction effect of physical field and rainfall are somewhat enhanced.

本文将遗传算法的四维同化系统运用到更复杂的MM5模式中，在理想实验中验证遗传算法同化系统的性能，并以2003年7月4日"南京暴雨"作为研究对象，进行了实际观测资料的同化，并将遗传算法同化系统和MM5伴随模式同化系统得到的结果跟未同化的结果进行了比较，结果如下：遗传算法同化系统不仅可以用在正压原始方程模式上，同样也可以用在MM5等复杂模式上，理想实验证明了遗传算法同化系统优于MM5伴随同化系统，在实际观测资料同化中，采用两种方法的同化系统都能有效地改善数值预报模式的初始场，能在一定程度上提高物理量场和降水量的预报效果。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

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