罐车内壁元素硫的来源机理

分析了罐车装运喷气燃料中元素硫的来源途径,探讨了罐车内壁元素硫的来源机理。理论分析和实验研究结果表明,罐车内壁元素硫主要来源于硫腐蚀,罐车内存在金属硫化物、水分、氧气等条件时可促进元素硫的生成;沉积于罐壁腐蚀内层的元素硫难以清洗除去,却可慢慢溶解于油品中而致使喷气燃料银片腐蚀不合格。采用汞滴法可快速有效地测定罐车残油中的元素硫含量,检测不合格的罐车不用于装运喷气燃料,可有效地解决喷气燃料银片腐蚀不合格的生产问题。     

Transit smart card data mining for passenger origin information extraction

The automated fare collection(AFC) system,also known as the transit smart card(SC) system,has gained more and more popularity among transit agencies worldwide.Compared with the conventional manual fare collection system,an AFC system has its inherent advantages in low labor cost and high efficiency for fare collection and transaction data archival.Although it is possible to collect highly valuable data from transit SC transactions,substantial efforts and methodologies are needed for extracting such data because most AFC systems are not initially designed for data collection.This is true especially for the Beijing AFC system,where a passenger’s boarding stop(origin) on a flat-rate bus is not recorded on the check-in scan.To extract passengers’ origin data from recorded SC transaction information,a Markov chain based Bayesian decision tree algorithm is developed in this study.Using the time invariance property of the Markov chain,the algorithm is further optimized and simplified to have a linear computational complexity.This algorithm is verified with transit vehicles equipped with global positioning system(GPS) data loggers.Our verification results demonstrated that the proposed algorithm is effective in extracting transit passengers’ origin information from SC transactions with a relatively high accuracy.Such transit origin data are highly valuable for transit system planning and route optimization.     

利用Origin7.0软件处理超声波声速实验数据

利用Origin7.0软件对驻波法测量超声波波速的实验数据进处理。通过整个实验数据处理,展示Origin7.0直观、快捷、高效的特点,适合学生在物理实验的数据处理和分析中应用。     

Origin7.5在光电效应实验数据处理中的应用

应用Origin7.5软件能够快速准确处理光电效应实验数据,能够对辅助处理物理实验数据非常有效。     

应用Origin软件研究非平衡电桥实验

用非平衡电压电桥测量在不同比率k值下Cu50电阻随温度变化关系.利用Origin软件,从不同角度研究非平衡电压电桥的特性,实验结果和理论值一致,k值越大,非线性误差越小,电桥灵敏度越低.     

Transit smart card data mining for passenger origin information extraction

The automated fare collection (AFC) system,also known as the transit smart card (SC) system,has gained more and more popularity among transit agencies worldwide.Compared with the conventional manual fa...     

用VB控制Origin实现船舶航行特性曲线的自动绘制

利用Origin所附带的二次开发工具-LabTalk，编制了自动绘制2个图层并存且由多条曲线组成的船舶航行特性曲线的程序。为调整Origin不同图层间联结直线段的长短，编程实现了类似AuWCAD中的trim／extend功能，并将该功能做成一按钮插入到toolbar中以方便使用；从而可调整不同层间线段的长短，使绘成的图形更美观，     

MicroCal Origin软件包在数据处理与图形绘制中的应用

在数据采集与处理过程中，往往会遇到数据量大、数据处理步骤繁杂以及人为做图误差大等诸多困难。该文利用MicroCal Origrin 6.x软件包中数据分析及图形绘制的强大功能，将其应用于测定溶液表面张力，计算溶液表面饱和吸附量以及饱和吸附分子的横截面积。所得结果与文献值较好吻合。     

准噶尔盆地腹部含氮—富氮天然气成因

通过对天然气地化特征、碳同位素、轻烃组成资料研究认为,准噶尔盆地腹部陆梁隆起古生界天然气具有高氮特征.其中陆南凸起石炭系和三叠系天然气为含氮天然气;石南凹陷石炭系天然气为富氮天然气.成因研究认为,这类天然气可能与岩浆岩侵入体有关.在此研究基础上,结合地质条件,推测气源为石南凹陷石炭系.