ERFT：一种增强型的可靠文件传输工具

网格数据传输组件RFT提供了可靠文件传输服务,但是GT4中的RFT仍存在不支持xml配置文件、不能进行全局优化配置、不能可视化操作等不足。在研究GT4 RFT组件的基础上,设计和实现了一个增强型的可视化可靠文件传输工具——ERFT。对大型文件的传输实验表明,ERFT继承了RFT的传统优势,同时又改进了其不足,为用户提供了更为可靠、友好的文件传输服务。     

数据交换平台数据传输器的设计与实现

为解决辽河流域水环境综合监管系统数据交换平台的数据传输问题,设计并实现一个简单实用的数据传输器组件,简单描述组件的消息结构和消息传输的具体实现,重点介绍消息传输的可靠性传输机制,最后提出基于日志的事务部分回滚策略。     

Estimation of forest volumes by integrating Landsat TM imagery and forest inventory data

Accurate information about forest volumes is essential for forest management planning. The survey interval of the Forest Resource Inventory of China (FRIC) is too long to meet the demand for timely decision-making required for forest protection, management, and utilization. Analysis of satellite imagery provides good potential for more frequent reporting of forest parameters. In this study, we describe an application of the k-nearest neighbors (kNN) method to Landsat TM imagery for improving estimation of forest volumes. Several spectral features were tested and compared in forest volume estimations, including normalized difference vegetation index, environmental vegetation index, and the combination of the spectral features. The combined index resulted in the most accurate volume estimations. The kNN estimator and the combined index were then used in forest volume estimation. The estimation error (RMSE) of the total volume was 44.2%, much lower than those for Larix forest (the RMSE was 51.7%) and those for the Korean pine and broadleaved forests (the estimation errors were over 71.7% and 88.19%, respectively). This preliminary study demonstrates the potential of forest volume estimations with remote sensing data to provide useful information for forest management if only limited ground information is available.     

不确定时滞系统的可靠保性能控制

对一类不确定连续时滞系统,研究当执行机构发生连续增益故障情况下的可靠保性能状态反馈控制律的设计问题.应用线性矩阵不等式处理方法,导出系统可靠保性能控制律的存在条件,并且给出所有可靠保性能控制律的参数化表示.在此基础上,进一步得到最优可靠保性能控制律的设计方法.对于部分执行器完全失效情况有待进一步研究.     

具有传感器故障的不确定系统的区域稳定可靠控制

针对具有不确定性的线性系统，考虑具有更广泛意义的传感器连续故障模型，应用修正的李亚普诺夫不等式，给出了系统区域稳定的充分条件．通过求解一组LMI完成状态反馈控制器的设计，经过仿真实例验证了结果的有效性．     

Predicting change for individual psychotherapy clients on the basis of their nearest neighbors.

This study extended client-focused research by using the nearest neighbor (NN) approach, a client-specific sampling and prediction strategy derived from research on alpine avalanches. Psychotherapy clients (N = 203) seen in routine practice settings in the United Kingdom completed a battery of intake measures and then completed symptom intensity ratings before each session. Forecasts of each client's rate of change and session-by-session variability were computed on the basis of that client's NNs (n = 10-50 in different comparisons). Alternative forecasts used linear or log-linear slopes and were compared with an alternative prediction strategy. Results showed that the NN approach was superior to the alternative model in predicting rate of change, though the advantage was less clear for predicting variability. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

HSRM层次化结构的动态构建和维护

HSRM是我们针对分布式组播会议控制的应用需求提出的层次化可扩展可靠组播通信模型。本文根据分布式组播会议控制在分布性、可扩展性和鲁棒性等方面的要求，以分布、基于组播、自适应、公平和自治为目标，设计了HSRM层次化结构的分布式、自适应构建和维护算法。     

非饱和土大气张力通用公式与库仑土压力

推出大气张力库仑土压力的近似计算方法：假设临界破裂角为已知,可以考虑多层粘性土、坡面任意荷载、水和气压力。提出粘性土的结合水膜可靠连接面积率修正系数等于粘粒含量。推出大气张力库仑抗剪强度公式的Cm 形式,Cm 是膜的抗剪强度贡献。     

DCS系统日常维护工作要点分析

以美国FOXBORO公司的I/ASeries系统为例,介绍DCS系统硬件及软件的日常维护工作要点。     

Removal of transient disturbances from oscillating measurements using nearest neighbors imputation

Transient disturbances in process measurements compromise the accuracy of some methods for plant-wide oscillation analysis. This paper presents a method to remove such transients while maintaining the dynamic features of the original measurement. The method is based on a nearest neighbors imputation technique. It replaces the removed transient with an estimate which is based on the time series of the whole measurement. The method is demonstrated on experimental and industrial case studies. The results demonstrate the efficacy of the method and recommended parameters. Furthermore, inconsistency indices are proposed which facilitate the automation of the method.