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The non-parameter penalty function method in constrained optimal control problems
An-Qing Xing
International Journal of Stochastic Analysis , 1991, DOI: 10.1155/s1048953391000138
Abstract: This paper is concerned with the generalization, numerical implementation and testing of the non-parameter penalty function algorithm which was initially developed for solving n-dimensional optimization problems. It uses this method to transform a constrained optimal control problem into a sequence of unconstrained optimal control problems. It is shown that the solutions to the original constrained problem. Convergence results are proved both theoretically and numerically.
Applications of the penalty function method in constrained optimal control problems
An-qing Xing
International Journal of Stochastic Analysis , 1989, DOI: 10.1155/s1048953389000201
Abstract: This paper uses the penalty function method to solve constrained optimal control problems. Under suitable assumptions, we can solve a constrained optimal control problem by solving a sequence of unconstrained optimal control problems. In turn, the constrained solution to the main problem can be obtained as the limit of the solutions of the sequence. In using the penalty function method to solve constrained optimal control problems, it is usually assumed that each of the modified unconstrained optimal control problems has at least one solution. Here we establish an existence theorem for those problems. Two numerical examples are presented to demonstrate the findings.
Transmission Lines Fitting and Towers Positioning in LiDAR Point Cloud
激光点云中输电线拟合与杆塔定位方法研究

YOU An-qing,HAN Xiao-yan,LI Shi-ping,YAN Zhao-jin,
游安清
,韩晓言,李世平,闫召进

计算机科学 , 2013,
Abstract: 通过竖直直方投影和均匀网格离散将激光雷达扫描得到的输电线路三维点云降维成二维灰度图像,提取其中直方响应最大的地方作为杆塔的水平位置,分离杆塔,输电线在走向上以杆塔为界分段;再沿其悬垂面的法线方向对各段输电线作正投影,对投影的散点进行迭代的鲁棒二次曲线拟合,实现在竖直方向上的各层输电线的分离。杆塔的提取和输电线的拟合是实现电力系统净空排查分析、输电线点云实体化和场景漫游的重要环节。
RENEWAL OF URBAN LAND GRADATION EVALUATION RESULT--TAKING LINZHANG COUNTY AS A CASE
城镇土地定级估价成果更新初探

GE Jing-feng GUO An-qing,
葛京凤、郭爱请

资源科学 , 2001,
Abstract: With development of economy, the factors that affect urban land vary c onstantly. Urban land gradation and land price evaluation must be renewed in tim e. In the case of Linzhang County, because the rural market and bazzar have been expanded, the original land gradation and land price may be lower. Therefore, i t is necessary to renew the urban land gradation and land price evaluation. Acco rding to the purpose and the principle of land gradation and land price evaluati on, this paper adopts the method of comparing some areas with objective gradatio n to evaluate land gradation. According to the various factors that affect land price, it can adjust the price of land partially or throughout the study area. T his indicates that the method is either practical or operative, and can be appli ed extensively and provide reasonable theory for land gradation and land price e valuation.
A wide range of intelligent monitoring of soil moisture content in wireless transmission tester
大范围土壤水分含量智能监测无线传输测试仪

ZHAO An-qing,WANG Min-jie,LI Cong,LI Hui,ZHENG Dan,
赵安庆
,王敏杰,李 聪,李 辉,郑 丹

土壤 , 2011,
Abstract: 从土壤墒情监测和指导田间变量灌溉的要求出发,本设计应用单片机控制相应的电器元件对土壤水分进行测量,并结合手机模块通过GSM网络以短信息的方式向外部发送,让管理者实时有效地了解土壤的水分情况,进而控制其他的灌溉设备,及时做好灌溉工作。GSM短信无线通讯技术在无线(手机)通讯领域已相当成熟,把这项技术移植到大范围土壤含水量监测方面是可行的。
MARINE ATMOSPHERIC CORROSION MONITORING BY MEANS OF AC IMPEDANCE TECHNIQUE
交流阻抗技术监测碳钢在海洋大气中的腐蚀

FU An-qing,XING Shao-hua,ZHANG Sheng-tao,LI Yan,
付安庆
,邢少华,张胜涛,李焰

腐蚀科学与防护技术 , 2007,
Abstract: 采用自制的腐蚀监测探头,利用交流阻抗技术监测了碳钢在我国青岛海洋大气中的腐蚀行为,腐蚀监测探头是由环氧树脂密封的两个相同大小的长方形碳钢片组成,监测了腐蚀探头溶液电阻(Rs)、极化电阻(Rp)等参数,利用Stern-Geary公式由Rp计算了钢材的腐蚀速度,研究了腐蚀速度与温度、相对湿度的关系.结果表明:温度和相对湿度是影响钢材大气腐蚀的重要因素之一;相对湿度越大,碳钢的腐蚀速度越大;当相对湿度低于碳钢的临界相对湿度时,温度对腐蚀速度几乎没有影响,如果高于其临界相对湿度时,温度升高,腐蚀速度加快;从监测的Rp值变化情况可以看出大气腐蚀是一个非常复杂和不稳定的过程.
Characterization and storage stability analysis of bio-oil
生物油储存稳定性实验研究

ZHANG Wei,ZHAO Zeng-li,ZHENG An-qing,CHANG Sheng,LI Hai-bin,
张伟
,赵增立,郑安庆,常胜,李海滨

燃料化学学报 , 2012,
Abstract: A storage stability test was conducted on the bio-oil produced by fast pyrolysis of pine and corncob.The viscosity,water content and solids content of bio-oil increased after storage.However,there were no significant changes in the pH value,heating value and density of bio-oil.The quantitative analysis by GC/MS showed that the content of 1-hydroxy-2-propanone,acetic acid,and furfural were significant decreased.The content of 2-methoxy phenol,4-methyl-2-methoxy-phenol,and 4-methyl-phenol increased.13C NMR spectral analysis showed that the alkyl carbon and di-O-alkyl carbon content of bio-oil decreased after storage,while the content of aromatic and unsaturated carbon increased.Therefore,the aromaticity of bio-oil increased.
TiO2 Thin Film Deposited by Enhanced Ion Beam Technique to Improve Anti-coagulability of Pyrolysis Carbon Applied to Artificial Heart Valves
离子束辅助沉积氧化钛对改善热解碳抗凝血性能作用的初步研究

CHEN An-Qing,XU De-Min,WANG Zhe,ZHAO Qiang,JIANG Zhen-Bin,
陈安清
,徐德民,王哲,赵强,蒋振斌

无机材料学报 , 2004,
Abstract: A new kind of materials applied to the artificial heart valve, rutile-TiO2 thin film on low temperature isotropic pyrolysis carbon (LTI-carbon) was deposited through the enhanced ion beam approach. The thrombosis on the surface of samples was observed through platelet adhesion in vitro and animal experiments in vivo, respectively. Compared with LTI-carbon material, there is much less platelets adhesion, aggretated and coagulated as well as deformed on the surface of the thin film. Animal experiments in vivo also show that the amount of thrombus on the observed surface is much less than that of LTI-carbon. There are numerous platelets and fibrin aggregated and formed on the surface of LTI-carbon, but not on the surface of the thin film. The anti-coagulability of the deposited rutile-Ti02 thin film is much better than that of LTI-carbon traditionally used in artificial heart valves. And it also indicates that the deposited TiO2 thin film is a new kind of promising materials applied to artificial heart valves.
Effect of pretreatment temperature of pine on bio-oil characteristics
松木预处理温度对生物油特性的影响

ZHENG An-qing,ZHAO Zeng-li,JIANG Hong-ming,ZHANG Wei,CHANG Sheng,WU Wen-qiang,LI hai-bin,
郑安庆
,赵增立,江洪明,张伟,常胜,吴文强,李海滨

燃料化学学报 , 2012,
Abstract: Hemicellulose can produce more acid content than cellulose and lignin via pyrolysis.This work reduced the hemicellulose and water content of pine via low temperature pretreatment to improve the bio-oil quality.The chemical composition and FT-IR analysis of pine after pretreatment show that the lignin content increases and the carbonization of pine takes place,which results in the decrease of bio-oil yield and the increase in yield of char and no-condensed gas.With increasing pretreatment temperature,the important characteristics of the bio-oil,such as water content,high heating value,kinematic viscosity,and density all increase,and solid particles content decreases,while pH value decreases after an initial increase.The 13C nuclear magnetic resonance(NMR) show that the aliphatic carbon of bio-oil decreases,while the aromatic and the aromaticity increases.
Urban Traffic Information Service Application Grid
Chang-Jun Jiang,Zhao-Hui Zhang,Guo-Sun Zeng,Hong-Zhong Chen,Duo-Qian Miao,Yu Fang,Xiao-Feng Tao,Qing Zhi,FENG Yue,Yang Luo,An-Qing Zhou,Lin Chen,Lei LIU,
Chang-JunJiang
,Zhao-HuiZhang,Guo-SunZeng,Hong-ZhongChen,Duo-QianMiao,YuFang,Xiao-FengTao,QingZhi,FengYue,YangLuo,An-QingZhou,LinChen,LeiLiu

计算机科学技术学报 , 2005,
Abstract: Traffic information processing is very complicated because of dynamic, cooperative and distributed features. This paper describes the prototype system version 2.0 of Urban Traffic Information Service Application Grid (UTISAG), which is based on the previous version. In this version, a new architecture and more enhanced services are introduced. The remarkable characteristic of the new system is providing dynamic information services for travelers by grid technology. Therefore, the key research includes integrating large multi-source traffic data, forecasting route status, simulating regional traffic flow parallelly, and implementing optimum dynamic travel scheme based on massive GPS data.
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