2007：影响百姓生活的十件大事

2007年,我国改革发展的步伐令人世界瞩目,百姓的生活日益改善。这一年影响百姓生活的大事主要有以下十件。     

ERP,想说爱你也容易─—恩威集团成功实施浪潮国强ERP系统的方法与过程

ERP实施的成功率,低得让不少企业望而止步。然而,毕竟有一些企业取得了成功,难道他们真是上帝的“幸运儿”吗？本期应用写真,选取了这样一些具有特色的“幸运儿”。相信读者朋友们从他们的实施经历中,可以找到一些共鸣,得到一些启示。恩威集团作为一家民营的高科技跨国企业集团,其在计算机管理方面的投资和企业对计算机管理的重视程度是超前的。现在,恩威集团初步尝到了ERP的甜头。然而,就是这样一家企业,也曾在实施中走过了多次弯路。一、系统定位恩威集团为使企业计算机管理尽快普及,并尽可能在今后的应用中不致落后,一开…     

石城子三级电站引水系统优化设计研究

石城子三级电站为长引水式电站,引水系统线路超长,受地形、地质条件影响,采用压力管道引水。本文经过充分论证,对引水系统的选线、形式、引水建筑物布置进行了优化设计,推荐方案节省了投资,缩短了施工工期,同时增加了电量,取得了良好的社会效益和经济效益。     

充填采煤液压支架受力分析与运动学仿真研究

根据充填采煤液压支架结构原理及控顶作用,建立了支架顶梁的力学模型,分析得出了顶梁受力情况及3排立柱受力之间的关系;运用Pro/E软件对支架进行三维建模和运动学仿真分析,模拟出主要部件的运动过程,得出各主要部件在工作过程中的运动特征曲线,并对支架参数进行了校核.基于以上分析结果设计制造了ZZC8800/20/38型充填采煤液压支架,支架前、后排立柱受力分别是中立柱支架受力的4.1倍、4.6倍.该支架在平煤十二矿成功应用表明受力分析及设计是科学合理的.     

中日企业环境责任制度的比较研究

在当前全球经济模式从传统的线性经济向循环经济转变的背景下,对企业环境责任的研究尤为迫切。本文对我国和日本的企业环境责任制度进行了比较分析,并指出我国应该取长补短、发挥自身优势加快我国企业环境责任制度的发展。     

珠江流域降雨特征研究

采用珠江流域42个站点1960—2005年46年间的日降雨资料,定义了关于降雨的三大类指标:基本降雨指标、极端降雨指标和连续降雨指标,运用MMK法对降雨序列的变化趋势进行显著性检验,以此从不同角度全面的剖析了珠江流域降雨的变化特征,为深入理解珠江流域降雨的变化规律提供一些视角,也为科学理解洪旱灾害与降雨规律的内在成因提供事实基础,同时也有利于全球气候变化与人类活动作用影响下,珠江流域水资源的有效管理与利用。     

Iterative circle fitting based on circular attracting factor

An intuitive method for circle fitting is proposed. Assuming an approximate circle(CA,n) for the fitting of some scattered points, it can be imagined that every point would apply a force to CA,n, which all together form an overall effect that "draws" CA,n towards best fitting to the group of points. The basic element of the force is called circular attracting factor(CAF) which is defined as a real scalar in a radial direction of CA,n. An iterative algorithm based on this idea is proposed, and the convergence and accuracy are analyzed. The algorithm converges uniformly which is proved by the analysis of Lyapunov function, and the accuracy of the algorithm is in accord with that of geometric least squares of circle fitting. The algorithm is adopted to circle detection in grayscale images, in which the transferring to binary images is not required, and thus the algorithm is less sensitive to lightening and background noise. The main point for the adaption is the calculation of CAF which is extended in radial directions of CA,n for the whole image. All pixels would apply forces to CA,n, and the overall effect of forces would be equivalent to a force from the centroid of pixels to CA,n. The forces from would-be edge pixels would overweigh that from noisy pixels, so the following approximate circle would be of better fitting. To reduce the amount of calculation, pixels are only used in an annular area including the boundary of CA,n just in between for the calculation of CAF. Examples are given, showing the process of circle fitting of scattered points around a circle from an initial assuming circle, comparing the fitting results for scattered points from some related literature, applying the method proposed for circular edge detection in grayscale images with noise, and/or with only partial arc of a circle, and for circle detection in BGA inspection.     

浮选技术净化含油污水的现状及展望

在叙述浮选法分类的基础上,有选择地介绍了几种主要的浮选方法,对影响浮选效果的因素进行了分析,根据浮选技术处理含油污水的研究进展状况,指明了气浮技术处理含油污水的发展趋势。     

健威：中国现代家具业的榜样

从中国健威到健威美国、健威欧洲,十二年矢志不渝的追求,发展成现代化的跨国集团,中国健威一路高歌猛进,演绎了一场中国家具企业巨变的神话。从江门一隅到健威中国,这一步飞越十二载艰辛历程,从中国健威走向世界,融入健威美国,将总部迁徙美国三藩市只是一步之遥,而健威欧洲的市场布局又是那样的坦荡大道。中国健威以十二年传奇记载了中国现代家居业的发展史,承载了中国家具由古老走向现代的辉煌。