积累数据

Currently, with the application of information technology, there is a huge number of data stored in companies.

目前，随着信息技术在企业中的普及应用，企业积累了大量的数据。

In analyzing wealth accumulation, we limit attention to the subsample that supplied complete data on all financial and demographic variables of interest.

在分析财富的积累，我们限制一个子样本，提供完整的金融和人口变量统计数据。

Based on the example of turbine reverse engineering , the general procedure that can be used to translate the physical object into CAD datum by Surfacer software is determined in this paper1 By going deep into the vector of point-cloud , it's parametrization can be gained by adopting the precept of accumulating chordal parametrization1 According to the principle of const ructing curve using the least square method , the high quality-curve can be gained by modifying curve's parameter1 This paper also empha2sizes on some methods about processing point-cloud , const ructing curve and const ructing surface1 And it can provide several methods to const ruct high quality2CAD model for mould machining1

此栏目为免费论文，可自行复制获取，如需要其他完整论文，可点击论文范文查找摘要本文就涡轮反求造型的实例，采用Surfacer 软件规划出由实物转化为工程CAD 资料的一般流程。在深入分析点云数据的矢量方向基础上，采用积累弦长参数化方案实现点云的参数化；根据最小二乘法曲线拟合原理，修改曲线参数获得高品质曲线；并重点论述了点云处理、曲线生成、建构曲面的方法，为模具加工提供了建构高品质CAD 模型的有效途径。

When nitrite accumulation occurred temperately in the system, piecewise zero-order kinetic model and dynamic model based on Monod equations were both used to describe the experimental data, and related parameters were analyzed.

在系统亚硝酸盐暂时积累条件下，分别采用分段零级动力学模型和基于Monod方程的动态模型，拟合试验数据，并求算相应的动力学参数。

The design of the outdoor thermally insulated equipment is carried out using the "short term" temperature.

另外，建筑，系统和设备的设计还需要考虑长期积累的低温特性数据。

In recently years, voluminous and complicated spatial data are accumulated in spatial databases wi...

3S技术的广泛使用使空间数据库中积累了海量、复杂的空间数据，这对传统的GIS空间分析功能提出了严重挑战。

Tapping his 20-year industry experience and leadership with electronic trading systems, Greifeld has led a significant enhancement of NASDAQ's trading offerings. In March 2004, he oversaw the launch of NASDAQ's market center—a newly integrated system capable of trading of NASDAQ, NYSE, AMEX-listed securities and exchange traded funds on a single electronic platform. Most recently, in May 2004, Greifeld led NASDAQ's decision to acquire BRUT ECN from SunGard Data Systems.

格雷费尔德利用自己20年来积累的行业经验和在电子交易系统的领导才能，使纳斯达克的交易产品数量有了显著增加。2004年3月，他发起创立了纳斯达克市场中心，使在纳斯达克、纽约证券交易所、美国证券交易所上市的证券和交易所交易基金都能在同一个电子交易平台上进行交易。2004年5月，格雷费尔德领导下的纳斯达克决定收购SunGard数据系统公司旗下的BRUT ECN。

Since 1991, China and Spain have built together two observation stations at Cueva and Timanfaga in the volcanic active region of Lanzarote Island, and carried out the dynamic monitoring and observation of crustal deformation and geothermal flow.

对合作研制的 2 9台监测仪器开展长期稳定实验，积累了大量观测资料和数据。初步分析表明：仪器运行良好，记录长期稳定可靠；Cueva站的仪器记录主要反映区域或全球地球物理环境或动力学效应，应变潮汐和倾斜潮汐的O1波、M2 波具有较高精度，显示火山目前活动微弱；Timanfaya站的仪器记录主要反映局部的火山活动信息，显示火山仍在活动但呈下降趋势。

Smoldering combustion is a unique combustion phenomenon; its spread may cause disasters and damage a forest. In order to determine smoldering combustion characteristics so as to provide a theoretical basis for preventing and controlling forest fire, the paper made some combustion experiments on litters from Keteleeria evelyniana, Cupressus torulosa and Acacia mearnsii with a fuel bed designed by the authors.

为进一步了解森林凋落物的阴燃特性，为科学地防控森林火灾提供理论依据，用自行设计的燃烧试验床对云南油杉Keteleeria evelyniana、藏柏Cupressus torulosa、黑荆Acacia mearnsii这3种年凋落物积累量大的树木的凋落物进行了阴燃试验，对阴燃过程中的温度变化数据进行了实时采集。

The parameterization of section contour data is carried out by the method of accumulated chord length, the reasonable math model on the selection of node vector is given, the approximating of NURBS curve to section contour data is carried out by the least square method and the most reasonable number of control point is obtained by the dimidiate algorithm, which makes the approximating of NURBS curve reach the extent of complete automation.

用积累弦长的方法对截面轮廓数据进行参数化；给出了节点矢量选择的合理数学模型；用最小二乘法对截面轮廓数抛进行了NURBS曲线的拟合；二分法寻找最优控制点的算法使NURBS曲线的拟合达到全自动化的程度。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。