消防气体灭火监理如何实施过程控制

建筑消防气体灭火工程作为建筑项目中的一个分部工程。虽然占项目的投资比例较小，但涉及的分项工程较多，所以其质量的好坏，将直接影响使用后对人身及财产安全的保护。因此做好对它的过程控制尤为重要。结合工作实际，从事前、事中、事后等方面叙述了消防气体灭火专业监理工程师如何实施过程控制。     

投影系统像差分析及优化设计

为实现场景的三维重构，将彩色编码图案与投影系统相结合，利用投影照明系统照明彩色编码图案，通过投影物镜以一定倍率放大投射到空间场景上，对场景进行特征化。针对在特征化过程中像差将严重影响三维重构的精度，提出一种编码板制作的方法，构建了新的投影系统，并通过实验验证此种方法的正确性、可行性，从而优化整个系统。     

桥式起重机水平运行及抓斗防摆规律研究

根据桥式起重机抓斗的受力分析,建立了起重机水平运行与抓斗摆动关系的数学模型．应用最优控制理论,分别得出了起重机的水平运行规律与运行距离的最优时间控制方法、抓斗的摆动规律和消摆的最优时间控制方法．     

Ⅰ型平面应变定常扩展裂纹线场分析

本文合理地假设了近裂纹线塑性区外的弹性场的形式,从弹塑性理论的基本方程出发,通过在裂纹线附近弹塑性边界上应力和变形的匹配,得出了理想弹塑性不可压缩材料平面应变Ⅰ型定常扩展裂纹,近裂纹线的应力与变形场,以及弹塑性边界的单位法向量和长度,并基于裂纹前方一确定距离处的应变准则,给出了定常扩展判据.     

杉木种子X射线衬比检验方法的研究

本研究发现,碘化钾是杉木种子衬比射线检验的最佳衬比剂;衬比过程是:杉木种子在自来水中浸泡16h;吸干种子表面水分,在40％的碘化钾溶液中处理2 h;在流水中冲洗5～6min后在70℃下干燥4h。研究结果表明,胚和胚乳(雌配子体)发育良好且未被碘化钾浸渗的种子都有生活力。用X射线衬比法测定的34份杉木种子发芽能力(X),同它们的实际发芽率(Y)相当一致。它们的关系是Y=-1.5+0.998X,r=0.97。     

Research on transformation from UML statechart to interface automata

This paper studies the problem of deriving an interface automata model from UML statechart, in which, interface automata is a formaliged model for describing component behavior in an open system, but there is no universal criterion for deriving behavior from component to construct the model. UML is a widely used modeling standard, yet it is very difficult to apply it to system verification and testing directly for its imprecise semantics. After analyzing the expression ability of the two models, several transformation rules are defined and each step of transformation is described in detail, after that, the approach is illustrated with an example. The paper provides a method for acquiring interface automata and lays the foundation for related research.     

Prediction of protein structural classes using the theory of increment of diversity and support vector machine

Based on the concept of the pseudo amino acid composition(PseAAC),protein structural classes are predicted by using an approach of increment of diversity combined with support vector machine(ID-SVM),in which the dipeptide amino acid composition of proteins is used as the source of diversity.Jackknife test shows that total prediction accuracy is 96.6% and higher than that given by other approaches.Besides,the specificity(Sp) and the Matthew’s correlation coefficient(MCC) are also calculated for each protein structural class,the Sp is more than 88%,the MCC is higher than 92%,and the higher MCC and Sp imply that it is credible to use ID-SVM model predicting protein structural class.The results indicate that:① the choice of the source of diversity is reasonable,② the predictive performance of ID-SVM is excellent,and ③ the amino acid sequences of proteins contain information of protein structural classes.     

井冈山老区大学生农村就业创业现状调查分析

文章主要通过对井冈山老区的高校、农村进行实地调查，分析了社会各界对大学生到农村就业创业的看法和农村对人才需求现状，阐明我国高校毕业生到农村就业创业的对策及对社会主义新农村建设的深远意义。     

双MOS晶体管等效电阻

用两个源端接地、漏端接在一起的ＭＯＳ管，使其分别工作于饱和区和非饱和区，可组成等效电阻，即用有源器件实现了电阻的功能。模拟及测试结果表明，当工作电压在１～４Ｖ范围内时，阻值变化在５％以内。双ＭＯＳ管电阻实际上是对单ＭＯＳ管线性区电阻的补充和改进，结构简单，阻值从１ｋΩ到几十ｋΩ且易于调整，采用标准ＣＭＯＳ工艺制作。     

对数学教学的一点探讨

讨论了数学教学改革的必要性，及教师如何在教学中改进教学，并举例谈如何启发诱导学生