Least squares recursive projection twin support vector machine for classification

In this paper we formulate a least squares version of the recently proposed projection twin support vector machine (PTSVM) for binary classification. This formulation leads to extremely simple and fast algorithm, called least squares projection twin support vector machine (LSPTSVM) for generating binary classifiers. Different from PTSVM, we add a regularization term, ensuring the optimization problems in our LSPTSVM are positive definite and resulting better generalization ability. Instead of usually solving two dual problems, we solve two modified primal problems by solving two systems of linear equations whereas PTSVM need to solve two quadratic programming problems along with two systems of linear equations. Our experiments on publicly available datasets indicate that our LSPTSVM has comparable classification accuracy to that of PTSVM but with remarkably less computational time.     

The Formability of AZ31B Magnesium Alloy Sheet

The forming limit diagrams （ FLD ） of AZ31B magnesium alloy sheet were tested by means of the electro etching grid method based on the forming experiment of magnesium alloy sheet carried out with a BCS- 30D sheet forming testing machine and the strain testing analysis made with an advanced ASAME automatic strain measuring system. Experiments show that, at room temperature, the mechanical properties and deep drawing peorformance of AZ31B cold-rolled magnesium alloy sheet were so poor that it failed to test the forming limit diagrams without an ideal forming and processing capacity, while the hot-rolled magnesium alloy sheet was of a little better plasticity and forming peorformance after testing its forming limit diagrams. It can be concluded that the testing of the forming limit curves （ FLC ） offers the theoretical foundation for the drawing of the deep drawing and forming process of magnesium alloy sheet.     

ArcFVS: An integration of a Geographic Information System and Forest Vegetation Simulator

This paper presents the design and implementation of an integrated application program called ArcFVS that links the Forest Vegetation Simulator (FVS) and a Geographic Information System (GIS) to realize spatial selection of input files and graphic display of modeling output. Data for testing and running the model came from the U.S. Forest Service’s Forest Inventory and Analysis (FIA) Database and were also collected in field surveys in north-central Indiana. ArcFVS 1.0 is designed using the ArcGIS software from the Environmental Systems Research Institute (ESRI) and the Visual Basic for Applications (VBA) programming environment to manipulate ESRI’s ArcObjects. The resulting product offers custom functions as commands in a new menu or as tools on a new toolbar. They are used to: select spatially or by attribute the forest plots to be projected by FVS, create the FVS input files for the selected plots and display in a geospatial environment different types of FVS output (text output files, tables with variables of interest and visualization image files). Advantages of ArcFVS 1.0 include the new GIS capabilities, enhanced format translation functions and the standardized programming environment.     

DPMAS:一种多主体系统设计方法

提出一种多主体系统设计方法DPMAS。首先,该方法以对象作为主体实现的基础,以UML作为基本的建模语言,保证了与面向对象方法的延续性。同时,该方法提供了新的图来表示多主体系统中的知识模型和主体间交互模型,并对UML符号进行了一些改进以表示主体特有的概念。     

滑步与再同步过程的微观结构分析

按照定常两机电力系统平衡点的属性，将其轨迹分类为稳定的结点、不稳定的结点、稳定的焦点、不稳定的焦点和鞍点这5种不同运动模式。利用互补群惯量中心(CCCOI)：R^n→R^2保稳映射将实际多机受扰轨迹映射为时变的两机等值轨迹，进而分析后者如何由对应于上述运动模式的多个轨迹段构成，并用符号序列反映其微观结构。以电力系统从一连串的滑步进入再同步为例，研完了多机电力系统的后期动态行为会随着参数的细微变化而显著改变的现象。如果一段具有鞍点特性的相轨迹的起始点从稳定流形的一侧变到另一侧，那么不论系统参数的变化多么细微，其后继轨迹将有完全不同的动态。     

间接蒸汽加热时二元连续精馏塔提馏段操作线方程

提出了间接蒸汽加热时二元连续精馏塔以ｘＦ，ｘＤ，ｘＷ，ｑ，Ｒ表达的提馏段操作线方程。     

时滞系统问题的一种近似解方法

本文对线性时滞微分方程边值函数问题提出一种级数近似解方法。其基本思想是利用正交多项式级数的近似性质把它近似地简化为一线性代数方程组的求解问题     

边际函数的绝对连续性

本文给出边际函数的绝对连续性性质．     

欺骗网络体系框架研究

本文提出了一种基于信息欺骗的信息防护框架。从欺骗网络的交互程度,拓扑和技术三个方面对该框架进行了论述。     

安装卸载程序技术要点简述

简要论述构造安装卸载程序的技术难点及其解决办法,并给出可行的软件实现方法.