数字农业平台及位置测量系统

随着现代科学技术的迅速发展。信息时代的经济也打上了数字化的烙印。具有明显的数字化特征。为此，阐述了数字农业精准生产技术平台的构成、工作原理及要实现的目标。着重介绍了高精度的摩擦轮光电位置测量系统的设计，解决了数字农业精准生产技术平台在轨道行驶时的位置测量问题。     

中洛输油管道总传热系数测试与分析

叙述了中洛输油管道总传热系数的测试原理，使用仪器仪表，测点布置及整个测试过程。通过对测试结果进行分析，找出了影响中洛输油管总传热系数的主要因素。     

电位法判断绝缘法兰绝缘性能存在的问题

用电位法判断绝缘法兰的绝缘性能常出现错误，其原因是电位法未涉及绝缘法兰非保护端管／地电位的一个重要因素－绝缘法兰非保护端管道的接地电阻。     

热磨机磨盘真实间隙非接触测量的研究

目前普遍采用接触式测量方法不能实时反映磨片磨损后的真实间隙。本文对采用电涡流传感器和超声波测厚仪组合实时非接触测量磨盘真实间隙的设计方案进行了研究和探讨。     

改进剥层应变法测量铝合金预拉伸厚板内部残余应力分布

铝合金预拉伸板已广泛应用于航空整体结构件的制造,其内部初始残余应力引起的加工变形已严重制约新型飞机的研制和生产。测量残余应力的方法很多,但一般只能测量工件的表面和浅表层,而厚板内部残余应力测量一直是工程中的难点。文中针对铝合金预拉伸厚板的特点,提出了测量其内部残余应力的方法,并运用弹性力学理论进行了理论推导,得到了应力-应变关系矩阵。用该方法测量了7050T7451铝合金厚板内部残余应力,并对测试结果进了分析和比较。结果表明,本文提出的方法有效地解决了厚板内部残余应力测量的难题,有较高的工程应用价值。     

苏禽绿壳蛋鸡部分性状间的典型相关分析

为研究苏禽绿壳蛋鸡开产性状、全期产蛋性状与体尺性状之间的关系,选取具有全期产蛋记录的30只苏禽绿壳蛋鸡的3组性状的13个变量进行典型相关分析。结果表明:苏禽绿壳蛋鸡的开产性状与全期产蛋性状的第1个和第2个典型相关系数为0.849、0.716,均达到极显著水平(P0.01),分别占两组性状间总相关信息的70.5%、28.6%;开产性状和体尺性状间的第1个和第2个典型相关系数也达到了极显著和显著性水平(P0.01,P0.05),相关系数分别为0.821、0.749,分别占两组性状间总相关信息的59.3%、36.6%;全期产蛋性状和体尺性状的第1个典型相关系数达到显著性水平(P0.05),相关系数为0.861,占两组性状间总相关信息的77.5%。苏禽绿壳蛋鸡3组性状中其主要作用的性状有:开产日龄、开产体重、达平均蛋重时体重、平均蛋重、体斜长和龙骨长,3组性状中全期产蛋性状与开产性状间的相关性最高。     

光学特性参数的测量方法在水果组织中的应用

通过借鉴光在生物医学上的传输机理和研究方法,将其应用于水果内部品质分析领域,从而为进一步提高水果内部品质分析精度提供了契机。研究了光在水果内部组织的传输机理、水果组织中的光学特性参数、光在水果组织中的传输模型及水果组织中光学参数的测量方法,为今后测量水果内部品质的无损检测系统研制提供相关理论依据。     

Behaviour Risk of Applicant Measurement

When deeisioner makes a decision rationally and legally, the other of the game will face behaviour risk. It is different from moral risk. When an applicant buy the insurance, he will reduce investment of prevention and become more risky. So insurer faces behaviour risk. By the analyse of behaviour risk, insurer can manage risk better and adjust the premium rate.     

Fiber Fabry-Perot Sensor and Its Application for Monitoring Bridge Strain

The strain is an important parameter that reflects the bridge health status, the fiber Fabry-Perot sensor is embedded in the concrete structure as the intelligent sensing element for the bridge strain. The strain measuring system is made up of the fiber Fabry-Perot sensor,light switch,fiber strain gauge and the comput- er; it can be used to monitor automatically the bridge strain. At present,the system has been installed in the Dafosi Bridge over the Yangtze River in Chongqing. The monitoring data show that the fiber Fabry-Perot sensor has good stability and reliability; it can be used to monitor the bridge strain for a long time.     

Catalog Tree Algorithm and Its Application on Universal Archive Management System

In this paper a point of view is expressed that the fairness of accounting measurement in anti-dumping holds a vital status. It should be considered fully that the positive connection exists between the anti-dumping and the fairness of accounting measurement and it is very important to anti-dumping.The fairness in accounting measurement is the extending of fair trade of WTO. However,the difference between the standards of China's accounting and international accounting to certain extent does exist. In this paper, the fairness in accounting measurement in view of identification, transparence, international coordination and objective justice are expounded. It is concluded that in the process of anti-dumping, the identification of fairness in accounting measurement rests with present value and historic cost of market economy. The transparence is the premise of fairness in accounting measurement. The necessary and possibility exist in international coordination, The objective market condition in setting up the fairness in accounting measurement should be taken into account and the unity, different arrangement, utility and reliability be embodied.