积累误差

Besides the K-B model, a simplified model to calculate thermal conductivity was advanced which has advantage in reducing operation and cumulative error.

计算热导率可采用K-B模型或者简化模型，后者具有降低运算量，减小误差积累的优点。

It can be found that the IPCA, as a non-iterative method, can obtain one principal component by only one calculating process. Therefore the IPCA is not only fast in calculation, but can avoid the cumulative error suffered by iterative methods.

使用模拟和实验HPLC-DAD数据对IPCA进行了验证，结果表明IPCA是一种非迭代方法，只需要完成一次计算过程即可得到一个主成分，因此IPCA不仅能够显著提高运算速度，而且可以避免迭代法中的误差积累问题。

Influence of tolerance factor on the complex engine performance was analyzed, then a new tolerance analysis and optimization method for complex product was proposed. The method synthesized effects such as tolerance size, tolerance location and component error accumulation on the product performance. Tolerance was then optimized based on the result of tolerance analysis and processing cost of different parts.

分析了公差对复杂发动机性能的影响，提出了针对复杂产品的公差分析和优化方法，综合考虑了各零件公差值大小、公差分布位置和零件误差积累对产品性能的影响，并根据公差分析结果和零件的加工成本等综合因素对零件公差进行优化。

At last, the relations among the error of estimation, the input SNR, and the number of accumulation windows are analyzed.

分析了波形估计误差和输入信噪比、积累窗个数的关系。

The main architecture of multiple WPANs accessing the HAN is proposed. The medium access control-level coordination solution applied in the access point for the coexistence of different communication protocols within WPAN is discussed. The diagram of the adaptive FRESH filter is described. The anti-interference models of the FRESH filter in the scenario of multiple WPANs accessing the HAN are proposed. The minimum mean square error convergence property of the FRESH filter with the change in data point number is analyzed.

描述了多个无线个域网接入家域网的总体结构，讨论了应用于接入点的媒体访问控制(medium access control，MAC)级协作解决方案以保证多个无线通信协议共存于一个无线个域网内，给出了自适应频移滤波器的框图，提出了在多个无线个域网接入家域网场景中频移滤波器的抗干扰模型，分析了频移滤波器最小均方误差随数据积累点数变化的收敛性能。

Many single BP networks make up of predictive model paratactically, each predictive model can not be affected each other, so the error is not accumulate.

由多个单独 BP 网以并行方式构成预测模型，各子预测模型间无直接影响，因此没有误差积累。

When the filter is worked under deep integrated mode, we used the Potteralgorithm of square root filter to avoid calculate disperse, which is conduced by the accumulate of round off error. So we enhanced the systems robustness.

3在深组合工作方式下，卡尔曼滤波采用了平方根滤波的Potter算法，以避免因舍入误差积累造成滤波器的计算发散，提高了组合系统的稳健性。

The dry matter weights of different organs are the products of the respective partitioning index and plant or shoot weight. Testified with the experimental data, the model showed a good explanation and precise prediction to the dynamitic simulation of rice assimilation partitioning with relative errors less than 10% between simulation and observation.

模型验证结果表明，用该模型模拟的水稻各器官间干物质积累动态符合水稻生长的生物学规律，实测值和模拟值的相对误差一般小于10%，对于水稻同化物分配的动态模拟具有较好的解释性和预测性。

In conclusion, If the volume of the first step and second fermentation liquid were measured guarantee errors at 1% including, Aim at the current single canister to proceed the hypothesis that optimization combine control in time next, the tout a fait can be made present I the corporate and single canister produces the accumulation of the 2- keto - L- gulonic acid obtains to leading the level 84～ 86% of the period and can also be controlled at the same time within the sphere of efficient 36～40 h.

总之，在保证一步发酵醪液质量及二步发酵的体积误差在1%以内时，针对目前的单罐及时进行优化组合控制的前提下，完全可以使目前我公司的单罐产 2-酮基-L-古龙酸的积累达到领先水平84—86%。同时发酵周期也可以控制在最经济的36---40 h范围内。

A new launch vehicle telemetry system scheme with an independent sub-system of environmental measurement is designed, which could analyze environmental data on rocket and then sends analysis results instead of original measurement data to the ground station during the flight tests. And a method of overlapping data segmentation is presented for solving the error-accumulation problem caused by calculating the shock response spectra during the whole flight. Besides, the rocket-borne optimal process parameters of the acoustic noise, shock and vibration are obtained by simulation combined hardware resources and system capacity.

通过设计独立的力学环境测量及数据处理子系统构建新的遥测系统体系结构，在箭上完成力学环境数据处理并将处理结果代替原始测量数据发到地面；提出了数据重叠分段处理方法，解决了飞行全程处理冲击响应谱的误差积累问题；建模仿真给出了箭上力学环境数据的优化处理参数；完成了箭上实时处理器设计。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。