灵敏度

This paper gives comments on the sensitivity temperature drift of pressure sensors, analyses the reasons that result in sensitivity drift, presents the method of automatic balance bridge to compensate it.

本文就压力传感器的灵敏度温漂问题进行评述，分析了灵敏度产生的原因并提出利用自平衡电桥法解决灵敏度温漂的补偿方法。

Measurements of sensitivity showed that the films annealed at 500℃ had high ethanol sensitivity (67%), the sensitivity of butane is not high in the temperature around 225℃.

退火温度500℃的样品在工作温度225℃时，对乙醇有较高的灵敏度，灵敏度达67%，对丁烷的灵敏度不高。

At the same time,by using cysteine, the nonspecific lysis of liposomes was inhibited for the first time.

灵敏度比均相法的灵敏度提高了近6倍，比ELISA法的灵敏度提高了240倍。

Based on these, the polarization sensitivity model and software of space remote sensor are established, by using the method of polarization ray tracing. Applying the model and software, the linear polarization sensitivity of the Moderate Resolution Imaging Spectroradiometer and the dichroic system are calculated and analyzed.

在这个基础上，利用偏振光线追迹的方法，作者建立了航天遥感器的偏振灵敏度模型及相应的软件；并利用遥感器的偏振灵敏度模型及软件对中分辨率成像光谱仪总系统以及分色镜系统的线偏振灵敏度进行了计算和分析。

With coupler embedded and acceleration sensitivity compensation design, the structure symmetry is insured, which can induce the acceleration sensitivity effectively. The acceleration sensitivity compensation design also improves the production efficiency of FOH for towed linear array application.2. A good theoretical simulation platform, utilizing the method of elastic mechanics and the finite element method, is established, which can provide an effect predictive design for FOH. The experimental results are in good agreement with the theoretical analysises.3. Some key technology problems in the making of FOH for towed linear array application are conquered. The new developed FOH, with an acoustic sensitivity of -143.0dB, has acceleration sensitivity less than -30dB, which exceeded to results from other international reports.

本论文的主要成果和创新在于：1、提出了耦合器内嵌、带加速度灵敏度微调补偿的低加速度灵敏度光纤水听器结构，最大程度保证了工艺结构的对称性，实现了对工艺误差的有效补偿，提高了低加速度灵敏度光纤水听器研制的成品率。2、采用弹性力学和有限元方法建立了拖曳线列阵光纤水听器理论设计平台，实验与理论分析结果相一致，这为优化光纤水听器的结构设计提供了有效的技术手段。3、解决了拖曳线列阵用光纤水听器制造的关键技术问题，研制出声压灵敏度为-143.0dB，加速度灵敏度低于-30dB的拖曳线列阵用光纤水听器，其加速度灵敏度优于国际上已报导的结果，并在国防水声一级计量站对其进行了性能指标测试(来源：A14BC论文网www.abclunwen.com)。

It is also the base of structure optimization.According to main object characteristics of structural dynamics design,structuraleigenveetor sensitivity computation is,first,be studied.A Neumann series expansionmethod is proposed in accordance with the modal method and is developed to agreewith the structure with rigid body modes.A rapid Neumann series expansion methodfor eigenvector sensitivity is formed;it may greatly improve the efficiency ofcomputing eigenvector derivation.

本文根据结构动力学设计的主要目标特性，首先进行了结构特征向量灵敏度分析研究：形成了计算特征向量灵敏度的Neumann级数展开法，并将其扩展到适用于具有刚体模态的结构特征向量灵敏度分析；研究出计算特征向量灵敏度的快速Neumann级数展开法，该方法大大提高了特征向量灵敏度分析的效率；建立了无需K-1运算的结构特征向量灵敏度分析的共轭梯度迭代法。

The voltage and the sensitivity of voltage to system operation parameters are calculated by Newton power flow approach; the various higher order derivatives of voltage and voltage sensitivity to line openbreak parameter can be obtained by using the convergent correction equation of power flow and the equation of calculating sensitivity for the N power system. Finally, the voltage and sensitivity of N-1 power system can he calculated by correcting the voltage and sensitivity of N power system by Taylor series expansion.

通过牛顿潮流计算出N网络的各节点电压及其对系统运行参数的灵敏度；利用已收敛的潮流修正方程式和N网络灵敏度计算方程式分别对线路开断参数多阶求导，从而计算出电压和灵敏度对此线路开断参数的多阶导数值；根据泰勒级数展开式修正N网络的电压和灵敏度值，得到N-1网络的电压和灵敏度值。

When calculating sensitivities matrix, instead of computing 3D sensitivities, we attempt to compute 1D sensitivities. Since the sensitivity elements of nonstations are zero, which should be nonnegligible values, we adopt a method of approximation.

在计算灵敏度矩阵时，吸取近似灵敏度矩阵思想，采用一维灵敏度矩阵来代替三维灵敏度矩阵，并对非测点的灵敏度元素提出一种近似方法。

Results The sensitivity,specificity,positive predictive value,negative predictive value,Youden index,accuracy ...

结果检测血清特异性IgG的灵敏度为100·0%，特异度为97·7%，阳性预测值为97·2%，阴性预测值为100·0%，约登指数为0·977，符合率为98·7%，试验的一致率为98·5%；检测血清中总的特异性Ig灵敏度为97·1%，特异度为95·3%，阳性预测值为94·4%，阴性预测值为97·6%，约登指数为0·925，符合率为96·2%，试验的一致率为97·8%；检测唾液中特异性sIgA的灵敏度为96·2%，特异度为94·5%，阳性预测值为89·3%，阴性预测值为98·1%，约登指数为0·907，符合率为95·1%，试验的一致率为97·5%；检测粪便标本中的特异性sIgA的灵敏度为92·0%，特异度为90·2%，阳性预测值为85·2%，阴性预测值为94·9%，约登指数为0·822，符合率为90·9%，试验的一致率为98·6%，CV值均小于15%。

Compare with tunable filter detection technique, the wavelength measurement technique using tunable source is analyzed theoretically. We design a kind of all-fiber sensing interrogation system, by using long-period fiber grating as edge filter to interrogate the sensing signal of the FBG sensor. The wavelength resolution of the sensing measurement is 0.05nm.A novel FBG Bourdon tube sensor has been constructed, utilizing the pressure mechanic amplify function of Bourdon tube. The measured pressure sensitivity is two orders of magnitude higher than a simple monomode fiber with an in-fiber grating. Especially the pressure sensitivity of the sensor can be determined by changing the parameters of the cantilever beam. Adopting polymer package technique, we coat fiber Bragg grating by using polymer with different mechanic properties.

利用波登管对于压力的机械放大作用，研制了一种新颖的光纤光栅波登管压力传感器，将FBG的压力灵敏度提高了两个数量级，特别是这一传感器的压力灵敏度的大小可以通过改变悬臂梁自身的参数灵活控制；采用聚合物封装技术，将FBG封装于具有不同力学特性的有机聚合物基底中，利用基底的带动作用，将FBG对压力的灵敏度分别提高了20倍和31.7倍，由于我们采用了特殊的工艺，封装后的FBG不出现任何光栅啁啾；在成功封装的基础上对封装光栅的蠕变效应、FBG与封装材料之间的防滑处理等进行了实验研究；设计了外加圆柱形铝管的聚合物封装光纤光栅，将FBG的压力灵敏度提高了1430倍，可用于对微小压力变化的精确测量。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。