个人计算机非线性编辑系统制作电脑特技

非线性编辑系统是目前电视栏目、广告常用的制作设备,本文首先通过个人计算机增加相关的视频1394输入输出设备,然后详细介绍非编软件在个人计算上的视觉与动态图形的电脑特技的实现,最后介绍如何渲染输出视频成品。     

英汉语中语用负迁移的积极影响初探

语用负迁移常常被认为阻碍了学习者对目的语的习得,大量研究集中在如何克服负迁移对二语习得和跨文化交际的负面影响,而忽略了它的正面作用。本文从教学,跨文化交际以及文艺创作的新角度对负迁移的积极作用做了初步探讨。     

关于提高基层思想政治工作实效性的探讨

把思想政治工作落实到基层,是我们党开展思想政治工作的一条基本经验,是新形势提出的客观要求。当前企业改革进入攻坚阶段,基层组织深层次矛盾及问题不断出现,职工的利益需求、思想观念趋于多样化,只有紧跟改革发展的步伐,不断探索新的工作方法,创新思想政治工作内容,营造出思想政治工作的新局面,才能使基层的思想政治工作充满生机活力,才能更好地为经济建设服务。     

开展“管理干部进班组”活动的实践与思考

开展管理干部进班组活动对于转变干部工作作风、密切干群关系、提升管理水平意义重大。通过开展这项活动,收到了很好的效果。认真评估这项活动可以总结出很多经验教训,从中找到解决问题的办法和对策,推动这项工作进一步向前发展。     

修井作业员工基本功训练的探索与实践

井下作业外部市场的开拓,对修井作业员工的素质提出了较高的要求。由于培训时间、内容、人员不到位,培训设施不配套,培训计划不完善,培训定位不准确,使培训效果不理想。因此,强化员工的基本训练势在必行。只有结合企业自身的实际,把员工的基本功训练的各项工作落实到实处,才能真正培养出适应国际化修井专业要求的复合人才。     

Effect of austenite stability on the pitting corrosion resistance of cold worked stainless steels

The influence of cold rolling on the pitting resistance of stainless steels is investigated with respect to the austenite stability. A maximum in pitting initiation frequency for 20% reduction is confirmed whatever the austenite stability, but the value of this maximum fairly correlates to the amount of deformation-induced martensite. A direct influence of dislocations piling-up and an indirect role of martensite as a pile-up stabilizer is postulated. In the potentiostatic regime, cold work is shown to lower the repassivation ability and to increase the number of stable pits. Then, addition of alloying elements (such as copper) affects the pitting resistance not only for chemical but also for mechanical reasons (such as their effect on the staking fault energy and austenite stability), confirming the decisive role of microstructure in pitting corrosion of industrial alloys.     

运用FMEA工具建立高质量流程

一个能够得到有效实施流程应该是高质量的并且建立在有效的策划基础上,因此如何分析流程在实施过程中存在的风险或者缺陷并且加以预防,对于一个高效流程是必不可少的.本文阐述如何在流程策划阶段引入质量工具FMEA来有效降低流程风险.     

Mechanical behaviour of SSRT specimens optimized for IGSCC concerns

Simulating testing conditions leading to evaluate the intergranular stress corrosion cracking sensitivity of structural alloys is crucial to estimate the lifetime of in-service components. Former studies have pointed out that a simple modification of the design of slow strain rate tensile specimens was particularly convenient for evaluating the susceptibility to intergranular stress corrosion cracking of nickel-base alloys. The aim of the present work is to characterize and model the mechanical behaviour of such specimens. Validation of proposed modelling relies mainly on tensile tests carried on specimens equipped with strain gages. One of the striking results is that, for a given displacement rate of the heads of the specimen, a much slower strain rate can be obtained locally in comparison with the strain rate of an equivalent smooth specimen.     

High temperature deformation of oxide scale

Samples of ultra low carbon steel were oxidized in a chamber designed to control the thickness of the scale layer prior to their deformation by plane strain compression. The specimens were reheated within the temperature range of 950-1150 °C for different periods of time to vary the scale thickness; compression was conducted at temperatures that vary from 650 to 1150 °C. Metallographic analyses were conducted on deformed and undeformed scales to evaluate the integrity of the oxide crust that is made almost exclusively of wustite. It was found that the integrity of the crust depends on the temperature at which deformation is carried out and on the amount of deformation imparted. It is concluded that thin scales exhibit a plastic behaviour when deformed at temperatures above 900 °C and a brittle behaviour at temperatures below 700 °C; mixed behaviour was observed within this temperature range, as the scale was found to resist limited amounts of deformation.