逻辑承载网构建效果评价方法研究

逻辑承载网构建效果的评价是对一体化承载网的资源优化使用的重要手段。文章首先给出了物理承载网、用户需求和逻辑承载网等内容的具体数学模型,以描述逻辑承载网的特性。在满足用户需求的基础上,从物理承载网的剩余网络拓扑结构和资源分配均衡性的角度,使用图的连通性理论和概率论方法,提出了综合性的评价标准。     

矢量力学与分析力学的解法比较

用一例题说明矢量力学与分析力学在解题方法中的各自特点．矢量力学方法主要是对力学体系进行受力分析,列出矢量式计算求解．分析力学方法主要是确定体系的自由度,选取广义坐标,求出体系能量或有关物理量．代入分析力学中的方程式或原理式,计算求解．     

微机控制插装式综合液压实验台设计

本介绍了一种新型的机电液结合的实验设备——微机控制插装式综合液压实验台．论述了其设计方案及主要特点。在该实验台上除可进行《液压传动》课程的基本实验外,还可以让学生自行设计．组成液压回路及系统,同时还可作为典型的测控系统．为《测试技术》等课程提供实例。     

单台吊车移动下吊车梁最大挠度的解析算法

通过理论上的推导和证明,给出了单台吊车移动下,吊车梁跨中截面最大挠度计算公式以及对应的吊车荷载最不利位置,可为吊车梁设计中的刚度校核计算提供理论依据。     

激光直径仪微机在线测控系统

研制微机在线测控系统用于非接触激光直径仪．用这一系统对激光光电传感器ＣＣＤ的输出信号进行直径的在线测量,具有实时测量、显示、闭环控制、通讯及打印等功能．文中介绍了直径非线性修正的方法及闭环控制算法,给出了系统的硬件原理图及软件框图．现场运行结果表明,该系统测量精度高,实时性好,闭环控制易于实现,运行稳定可靠．     

泰国金融深化问题分析

泰国金融危机爆发后国际国内对其成因众说纷纭,而笔者研究认为,泰国金融深化过速是引发危机的主要因素,本文中对泰国金融深化的经济背景及金融深化过速的经济效应进行了分析,提出了发展中国家在推进金融深化过程中应注意的几个问题．     

3-D temperature distribution of a full size BF copper stave with oblate channel

An experiment of a new type full size copper stave for a real blast furnace was carried out in a special-designed experimental system. The 3-D temperature distribution inside the stave including isotherm was obtained based on the experiment data. And the effects of the temperature of cooling water and the velocity of the water as well as the temperature of the furnace on the 3-D temperature distribution were obtained. The experimental and calculation results show that the highest temperature of the hot surface is lower than 90℃ which is very good for the solidified slag formation on the hot surface and protecting the stave.     

Signed Total Domination in Graphs

Let G = (V, E) be a simple graph. For any real valued function f: V→R, the weight of f is f(V) = ∑(v) over all vertices v ∈V. A signed total dominating function is a function f: V→|- 1, 1|such that f( N ( v ) ) ≥1 for every vertex v ∈ V. The signed total domination number of a graph G equals the minimum weight of a signed total dominating function on G. In this paper, some properties of the signed total domination number of a graph G are discussed.     

Dynamics analysis of drawing cables for pipe robot over long distance

0　ＩＮＴＲＯＤＵＣＴＩＯＮＷｈｅｎａｄｒｉｖｉｎｇｓｙｓｔｅｍｗｉｔｈｌｏｗｓｔｉｆｆｎｅｓｓｉｓｄｒｉｖ ｉｎｇａｔａｌｏｗｓｐｅｅｄ,ｔｈｅｓｐｅｅｄｏｆｔｈｅｄｒｉｖｅｎｐａｒｔｓｉｎｔｈｅｓｙｓｔｅｍｉｓｎｏｔｕｎｉｆｏｒｍ .Ｔｈｅｍａｉｎｐｒｏｂｌｅｍｇｅｎｅｒａｔｅｄｄｕｅｔｏｌｏｗｓｐｅｅｄｍｏｖｉｎｇｉｓｓｔｉｃｋ ｓｌｉｐｐｈｅｎｏｍｅｎａ.Ｔｈｅｓｔｉｃｋ ｓｌｉｐｎｏｔｏｎｌｙｄｅｓｔｒｏｙｓｔｈｅｕｎｉｆｏｒｍｉｔｙｏｆｍｏｔｉｏｎ,ｂｕｔａｌｓｏｐｒｏｄｕｃｅｓｓｏｍｅｓｅ…     

Influence of temperature on production of lactic acid from kitchen garbage

0　INTRODUCTIONInrecentyears ,therehasbeenagrowinginterestinthefermentativetreatmentoftheorganicfractionofhouse holdwaste .Kitchengarbageishighmoisturecontention ,therefore ,itisdifficulttoburnitwithoutauxiliaryfuel,anditiseasytogeneratedioxinduringtheincinerationtreatmentbecausegarbagehampersrazingoftemperaturewithinincinerator[1] .Ontheotherhand ,recycleandreuseofgarbagearedifficultwhenkitchengarbageismixedwithotherwastes ,suchaswastepaper ,wasteplastics .How ever,kitchengarbageisarich …