连铸连轧和冷装热轧并存环境下的炼钢2连铸生产调度模型与算法

针对连铸连轧和冷装热轧并存环境下的炼钢-连铸生产调度问题,建立了基于浇次开浇时间的炉次指派和作业排序模型.在该模型中,通过浇次开浇时间单位提前/拖期成本的惩罚值的控制可以协调炼钢-连铸和热轧生产环节之间的匹配关系.对所建立的模型,提出了基于遗传算法和线性规划的实用算法,并给出了源于实际生产数据的计算实例.     

有限记忆ISODATA算法在航迹关联中的研究

针对多传感器多目标航迹关联的特点,提出了将基于聚类分析的ISODATA算法应用于航迹关联的解决方法。将表征航迹特征的参量构成待分类的样本空间,利用ISODATA算法对来自不同传感器的航迹进行关联。构建了基于ISODATA算法的有限记忆关联模型,利用有限步的历史航迹状态数据,有效地解决了目标密集环境下的误关联问题。通过仿真研究说明了算法的有效性。     

一种非线性融合系统中的传感器管理方法

针对非线性非高斯动态跟踪系统,提出一种基于序贯蒙特.卡洛粒子滤波的传感器管理方法。该方法首先利用粒子滤波计算目标的协方差;然后利用信息熵计算目标的信息增量;最后利用信息增量大小实现传感器资源对目标的分配。仿真结果表明,在非线性系统下,该方法对传感器管理具有较高的精确性、实时性和鲁棒性。     

旅游规划图制图规范研究

探讨了旅游规划图的性质,指出在我国旅游规划中由于编制单位的专业背景不同使得旅游规划图的制作各不相同,表现在有些规划图失去地图的基本属性、没有统一的图式图例和图集选题的差异;文中认为旅游规划图的规范化应从三个方面进行,即确保旅游规划图具备地图基本属性,编制统一的旅游规划图图式及统一旅游规划图的内容体系.最后对旅游规划电子地图的规范化进行探讨.     

Ability to detect weak effective seismic signals by utilizing chaotic vibrator system

Taking the advantage of CVS (Chaotic Vibrator System) sensitivity of large-scale periodic phase-state response to quasi-periodic or periodic signals,a series of numerical experiments were made to understand the ability of CVS to detect weak effective seismic signals in the common-shot seismic record distorted by strong stochastic noise. The re-sults demonstrate that the large-scale periodic phase-states of CVS are correlated with the signal composition of the quasi-periodic wavelet sequence constructing from horizontal moveout of seismic events,noise strength and the noise distortion de-gree to signal. For the same kind of events,the higher the noise distortion degree is,the lower the detectable SNR can be reached by CVS. For seismic data with the same noise distortion degree,the closer the scanning seismic velocity (the trial moveout ve-locity) approaches to the accurate velocity,the higher the detectable SNR can be reached by CVS. More-over,the truncating scanning velocities form an asymmetric belt,which indirectly makes CVS achieve a large-scale periodic phase-state and then the ratio of wavelet distortion coefficients in events can be a biggish variable scope.     

Incremental Web Usage Mining Based on Active Ant Colony Clustering

To alleviate the scalability problem caused by the increasing Web using and changing users＇ interests, this paper presents a novel Web Usage Mining algorithm-Incremental Web Usage Mining algorithm based on Active Ant Colony Clustering. Firstly, an active movement strategy about direction selection and speed, different with the positive strategy employed by other Ant Colony Clustering algorithms, is proposed to construct an Active Ant Colony Clustering algorithm, which avoid the idle and ＂flying over the plane＂ moving phenomenon, effectively improve the quality and speed of clustering on large dataset. Then a mechanism of decomposing clusters based on above methods is introduced to form new clusters when users＇ interests change. Empirical studies on a real Web dataset show the active ant colony clustering algorithm has better performance than the previous algorithms, and the incremental approach based on the proposed mechanism can efficiently implement incremental Web usage mining.     

基于移动设备的Mobile SVG的研究。

Mobile SVG是由W3C组织的SVG工作组专门针对PDA，Smart Phone这类移动设备基于XML技术规范所开发的一种开放标准的移动矢量图形技术规范。典型移动设备的计算能力和内存容量是有限的，创建了Mobile SVG文档时最小化绘制时间所采用的方法，设计并实现了一个模块化和有一定移植性的Mobile SVG浏览器。     

基于GPRS的输油管线自动监测系统

针对输油管线分布城广，其监测困难的实际情况，提出了输油管线自动监测系统的构架以及相应模块。该系统采用无线通信技术作为泄漏定位手段；采用GPRS，RS232和工业以太网作为通信总线；采用OPC中间服务器作为监测单元和工作站间的通信接口；用Web服务器系统将信息及时发布到Internet上，该系统具有高效、快捷、实时性好的特点。     

柴油蜡晶分散剂的制备和降凝效果研究

以马来酸酐和呋喃为原料，经Diels-Alder反应、酯化／酰胺化后合成了柴油蜡晶分散剂3，6-氧桥-1，2，3，6-四氢苯-1，2-二甲酸高级酯／酰胺。酸值测定表明，该合成方法的产率超过90％。对大庆0^#柴油的冷滤点测试表明，该醋晶分散剂与低相对分子质量的乙烯-醋酸乙烯酯共聚物复配效果较差，而与改性的聚丙烯酸高级醇酯二元复配后，可以降低冷滤点7℃，表现出了良好的协同效应。     

Ca2+引入方式及用量对蒙脱石的膨胀容及阳离子交换量的影响

探讨了Ca(OH)3,CaCl2掺入量对蒙脱石的膨胀容及阳离子交换量的影响,并对改性前后蒙脱石的显微结构进行了分析.研究结果表明,不论是普通蒙脱石还是钠基蒙脱石,经Ca2 处理后二者的膨胀容均有所下降,但改性普通蒙脱石下降的幅度要大于改性钠基蒙脱石的.随着Ca(OH)2,CaCl2掺入量的增加,膨胀容减小.当掺人8%(wt)CaCl2时,蒙脱石的膨胀容较小、交换性钙较低、结构紧密.