摘要：In this paper, an approach of roads network extraction from high resolution satellite images is presented. First, the approach extracts road surface from satellite image using one-class support vector machine （SVM）. Second, the road topology is built from the road surface. The last output of the approach is a series of road segments which is represented by a sequence of points as well as the topological relations among them. The approach includes four steps. In the first step one-class support vector machine is used for classifying pixel of the satellite images to road class or non-road class. In the second step filling holes and connecting gaps for the SVM＇s classification result is applied through mathematical morphology close operation. In the third step the road segment is extracted by a series of operations which include skeletonization, thin, branch pruning and road segmentation. In the last step a geometrical adjustment process is applied through analyzing the road segment curvature. The experiment results demonstrate its robustness and viability on extracting road network from high resolution satellite images.

摘要：Numerical weather simulation data usually comprises various meteorological variables, such as precipitation, temperature and pressure. In practical applications, data generated with several different numerical simulation models are usually used together by forecasters to generate the final forecast. However, it is difficult for forecasters to obtain a clear view of all the data due to its complexity. This has been a great limitation for domain experts to take advantage of all the data in their routine work. In order to help explore the multi-variate and multi-model data, we propose a stamp based exploration framework to assist domain experts in analyzing the data. The framework is used to assist domain experts in detecting the bias patterns between numerical simulation data and observation data. The exploration pipeline originates from a single meteorological variable and extends to multiple variables under the guidance of a designed stamp board. regional data patterns can be detected by analyzing distinctive stamps on the board or generating extending stamps using the Boolean set operations. Experiment results show that some meteorological phenomena and regional data patterns can be easily detected through the exploration. These can help domain experts conduct the data analysis efficiently and further guide forecasters in producing reliable weather forecast.

摘要：研究了不确定奇异分数阶系统的鲁棒稳定和镇定问题.在该系统里,状态矩阵的不确定参数通常假定为时不变和范数有界的.首先设计一个可预测的控制器使得不确定奇异分数阶正则;然后设计一个输出反馈控制器使得正则后的系统稳定,这样可以得到当分数阶阶次在[1,2)时系统鲁棒渐近稳定的充分条件;最后通过一个数值仿真证明了该方法的有效性.

摘要：通过淬火+两相区淬火+回火(QLT)工艺处理使9%Ni钢组织中获得了较多含量的逆转变奥氏体。为了探究奥氏体对9%Ni钢优良低温力学性能的影响机理,设计了三种不同温度条件的拉伸实验,分别是室温拉伸(rT),于液氮浸泡20min后在室温拉伸(LrT)以及液氮温度下拉伸(LT)。主要采用原位电子背散射衍射分析技术分析逆转变奥氏体的稳定性同时采用磁性法测量材料中奥氏体的含量。采用dCJ(differential Crussard-Jaoul)模型分析逆转变奥氏体稳定性对9%Ni钢加工硬化行为的影响。结果表明低温拉伸下9%Ni钢良好的强度和塑性来源于变形过程中奥氏体持续且充分的相变。

摘要：According to the weak link of protecting traditional village in china at present,based on geographic information system（GIS）,Google API technology and Supermap I Server Java 2008 development platform,the construction and realization of Chinese traditional village WEBGIS management platform were discussed in our *** the construction of Chinese traditional village WEBGIS management platform,the acquisition,updating and warehousing efficiency of data in basic information database was improved,and work cost was further cut off,being convenient to supervision and decision of related departments,while dynamic,classification and transparent management of part work was realized,having great significance in the modernization construction and management of rural village.

摘要：近年来,干式连接式墙板由于其施工便捷、二次浇灌少和易于维护的特点,在实际项目中的应用越来越多,并在超低能耗项目中显现出低碳的优势。装配式预制混凝土复合墙板的热工性能是建筑能否实现超低能耗的关键,本文主要讨论在干式连接的形式下,如何实现对预制装配式混凝土墙板的有效保温,并在连接节点处实现有效的热桥阻断和保证拼缝处的防水性能,为干式连接装配式预制混凝土复合墙板的保温设计提供参考。

摘要：猪舍的温度环境是影响猪只健康生长的基本要素,其中猪舍的通风速度对猪只的散热及猪只的有效环境温度具有十分重要的影响。本文对猪只的散热方式进行简单介绍,对猪只由于风速影响的对流传热方式及猪只有效环境温度进行了相应的计算。结果表明,通常情况下,随着猪舍内风速的增大,猪只的散热量增加,猪只所处位置的有效环境温度降低。本文所研究内容对猪舍的通风设计及养殖过程中猪舍环境控制有非常重要的指导意义。

摘要：Intercalation transition metal oxides (ITMO)have attracted great attention as lithium-ion battery negative electrodes due to high operation safety,high capacity and rapid ion ***,the intrinsic low electron conductivity plagues the lifetime and cell performance of the ITMO negative *** we design a new carbon-emcoating architecture through single CO_(2)activation treatment as demonstrated by the Nb_(2)O_(5)/C *** structure engineering of the carbon-emcoating Nb_(2)O_(5)/C nanohybrid is achieved in terms of porosity,composition,and crystallographic *** carbon-embedding Nb_(2)O_(5)/C nanohybrids show superior cycling and rate performance compared with the conventional carbon coating,with reversible capacity of 387 m A h g(-1)at 0.2 C and 92%of capacity retained after 500cycles at 1 *** electrochemical mass spectrometry(dEMS) indicates that the carbon emcoated Nb_(2)O_(5)nanohybrids present less gas evolution than commercial lithium titanate oxide during *** unique carbon-emcoating technique can be universally applied to other ITMO negative electrodes to achieve high electrochemical performance.

摘要：基于带内时钟导引的置入与提取，提出一种在超高速时分复用系统中的自时钟恢复方案．通过在发送端插入带内时钟导引并在接收端提取出该时钟导引，实现系统时钟的瞬时同步恢复，无需传统时钟恢复中的超快相位比较器和锁相环．实验分别演示了由相位调制和强度调制构造的时钟导引，结果表明所提方法可实现160～40Gb／S的无误码解复用．该方法在光发射机之后和光接收机之前的光域内对数据信号进行预处理，简化了时钟恢复，同时并未改变光发射机和光接收机的原理、结构和设计，与现行的光纤通信系统兼容．

摘要：为了建立一个面向用户、设计师、工程师和决策者的产品设计知识协同信息管理平台,有效利用案例中的设计知识,提出一种案例驱动的协同设计知识管理模型,该模型通过分析新产品开发中用户、决策者、设计师和工程师之间的设计知识流通模式,建立了基于案例的知识协同与信息交互过程的映射模型,提出了基于Markov模型的设计知识提取方法,构建了案例驱动的协同设计知识管理框架,并以软件形式实现。案例驱动的协同设计知识管理模型将已有领域案例的设计知识引入新项目设计问题的设计求解中,新产品设计开发和过程管理所需的所有设计信息均可通过领域案例设计知识库进行实时地设计知识获取、重用和进化,直至完成整个设计项目。以某品牌起重机造型设计方案在案例驱动协同设计知识管理软件平台上的具体应用为例进行验证,证明了所提模型的可行性和合理性。