用于现场测试的温湿度采集系统软件

介绍了用于现场测试的温湿度采集系统软件新的特点、功能及其设计和使用.     

温压用铁粉松装密度的优化粒级匹配试验研究

为提高温压用铁粉的流动性和松装密度，对典型粉末的粒度分布、流动性和松装密度进行了试验研究。结果表明，随温度的升高单一粒径粉体的流动性和松装密度均变差，而多粒级匹配粉末在120℃内基本保持不变，且粉体粒度分布对粉末的流动性和松装密度影响较大。通过正交试验优化了粉末的粒级匹配，获得了高松装密度的H1粉末，其流动性与国外粉W1相当，而松装密度比国外粉W1和国内粉N1分别提高了5．03％和8．99％。     

波纹轨腰钢轨开发的实验研究

波纹钢腹板以其独特的受力特点,在工程建设领域得到极其广泛的应用,在波纹腹板H型钢的基础上,开发一种新型波纹腹板产品———波纹轨腰钢轨,介绍了这种钢轨的力学特性,并在燕山大学轧钢实验室三机架万能机组上进行的轧制试验,结果表明这种具有优越力学性能的波纹轨腰钢轨完全可以通过轧制方法生产,会有很好的开发前景。     

Flume Experiment on Stream Blockage by the Debris Flow From Tributary

Stream blockage by the debris flow from tributary valleys is a common phenomenon in mountainous area,which takes place when large quantities of sediment transported by debris flow reaches a river channel causing its complete or partial blockage.The dam formed by debris flow may causes upstream and downstream flooding,and presents great threat to people and property.Because of the catastrophic influence on people and property,debris-flow dam has attracted many attentions from the researchers and local administration.But,lit- tle attention has been given to the quantitative interrelationships of the potential influential factors.In this pa- per,the interrelationships of important influential factors caused the stream blockage by debris flow were ana- lyzed through flume experiment,and a model to predict the blockage was presented.     

基于MATLAB/SIMULINK的自动控制系统仿真实验

针对自动控制系统的设计很大程度上还依赖于实际系统的反复实验、调整的普遍现象，结合具体的设计实例，介绍了利用较先进的MATLAB软件中的SIMULINK仿真工具来实现对自动控制系统建模、分析与设计、仿真的方法。它能够直观、快速地分析系统的动态性能、和稳态性能。并且能够灵活的改变系统的结构和参数，通过快速、直观的仿真达到系统的优化设计。     

蒸汽爆炸粗混合阶段冷液中高温球传热阻力耦合特性的实验研究

采用蒸发电力模型,设计了高温颗粒同水相互作用的实验装置,进行了一系列单个,多个粒子在不同温度,不同入水初速度和不同冷液过冷度情况下的系列阻力实验,初步实验分析表明,高温颗粒在刚刚穿过冷液表面的下沉速度明显低于冷态颗粒的速度,实验值与蒸发曳力模型计算值符合较好.     

挠性卫星变结构控制的全物理仿真实验分析*

我国首次挠性卫星振动控制的全物理仿真实验是基于变结构控制方案完成的。本文针对这一实验着重分析了在控制受限情况下其变结构控制系统镇定无限维挠性结构的稳定性、控制方案与系统喷气或燃料消耗的关系等问题，取得了具有实际意义的结论。     

基于语言量化的多标准模糊群体决策算法研究

文章提出了一种基于模糊相似度量、IOWA算子和语言量化的群体模糊决策的方法,因为这种方法能够用模糊方法来代表和融合专家的意见,并且可以根据不同的量化语言确定不同的数据融合标准,从而显得更具有灵活性和智能性。     

花岗斑岩类岩石中Au、Pd溶解性状的实验研究

研究花岗斑岩类岩石中Au、Pd的溶解性状 ,对于研究其溶解、迁移、沉淀条件有着重要的理论价值。研究结果表明 ,花岗斑岩中Au、Pd地球化学性状明显不同 ,Au活性显著 ,Pd惰性特征明显。在T =2 5 0℃、P =2 0× 10 5～ 30× 10 5Pa、pH =7.5 6的条件下 ,Au浸出率最低 ,易于沉淀成矿 ;在T =10 0℃、P =10 0× 10 5Pa、pH =8.2时 ,Au浸出率高 ,最易被活化溶解 ;当T =5 0 0℃ ,P =5 0 0× 10 5Pa ,pH =8.5时 ,Au浸出率中等 ,易被搬运、迁移。Pd易于沉淀成矿的条件是T =10 0℃ ,P =5 0 0× 10 5Pa ,pH =8.2 ;Pd易于活化溶解的条件是T =2 5 0℃ ,P =10× 10 5Pa ,pH =8.5 ;在T =30 0℃、P =(2 0～ 30 )× 10 5Pa、pH =6条件下发生搬运迁移。     

Are Reviews an Alternative to Pair Programming?

From the first presentation of extreme programming on, pair programming has attracted a wide range of programmers to work together in front of one display. The proposed advantages of pair programming are a faster development cycle and code with higher quality. However, the nearly doubled personnel cost when compared to single developers seems to outweigh these advantages. Instead of showing the superiority of pair programming, we seek an alternative. Can a single developer be assisted by an already known technique with which he produces the quality of pairs with only a fraction of the cost? The answer with some restrictions is: yes, he can. Reviews are a reasonable candidate with respect to code quality and cost.