光固化成型中曝光时间对成型质量的影响

A novel stereolithgraphy system with conventional UV light as a light source uses the 2D worktable as moving components, whose characteristics determine the accuracy of the prototyping parts. Many factors including mass of the worktable, elasticity and damp coefficients, speed and acceleration affect the non-uniform exposure time of the resin, and eventually influence the cured line shape and the curing accuracy. A light shuttle is used to eliminate the cure errors, greatly improving accuracy of the parts.     

Differences in Achievement Test Scores Associated with Item Exposure Time and Audio Reinforcement

Abstract

Using the Hartshorne and May circles test, cheating behavior was detected among 152 undergraduates under two situations: high threat, high supervision (HTHS) and low threat, low supervision (LTLS). Rest’s Defining Test was used to assess level of moral development. Among all subjects and across both situations it was found that subjects high in moral development cheated less than other subjects (p >.01). However, it was also found that in the LTLS situation, subjects high in moral development were just as likely to cheat as subjects low in moral development. The implications of the findings for moral education and the cognitive developmental theory of moral development are discussed.     

浅谈电视新闻中的记者出镜

出镜是一个电视新闻记者成功职业生涯的必经阶段,出镜记者要不断提升采访、报道与表达等方面的技能,以形成出镜记者稳定的风格和个性,使记者出镜在理论上的优势转化为现实的吸引力。     

时间

小朋友,时间老人可是我们最重要的朋友哦,你千万不能亏待他了。珍珍惜时间就是爱护我们自己。     

Time

What is time? Is it a thing to be saved or spent or wasted, like money? Or is it something we have no control over, like the weather? Is time the same all over the world? That's an easy question, you say. Wherever you go, a minute is 60 seconds, an hour is 60 minutes, a day is 24 hours, and so forth. Well, maybe. But in America, time is more than that. Americans see time as a valuable resource. Maybe that's why they are fond of the expression, "Time is money."时间是什么?是一种像金钱一样可以…     

时间

When I watch the sunrise and the sunset, I know it is time. When I see the streams flow gently,     

接触细菌很重要

细菌学家约翰·斯坦德弗德教授解释了为什么暴露于细菌之中是如此重要。细菌有害于人类的想法来自于上个世纪的早期,当时,人们很重视有关细菌和细菌感染理论的教育。根据斯坦德弗德教授的说法,最肯定所有细菌都有害于人类这一理论的科学家是那些当时正在开发灭菌药物的药理学家     

Bicycle Time：我和儿子的私密时光

我和儿子有个约定:2008年暑假,我要送给他一辆赛车(自行车),条件是,他要认真练琴,能够熟练演奏5首歌。于是,在兑现承诺的日子,就有了我们快乐的Bicycle Time。     

Story Time and Narrative Time-On the Time in When We Two Parted

As narratives are composed of the content encoded and the medium giving concrete shape to them,narratives are inseparably intertwined with temporalities,those of story time and narrative time.In the poem When We Two Parted,there is the co-existence of story time and narrative time.The story time covers three sections depicting separately the past events,the present and the future.They are boiled down into the poem in thirty two lines in total,which gives rise to the variance between duration of story time and duration of narrative time.The durations endow the poem with distinguishable narrative effects.     

儿童的时间观念与儿童教育时间的"取法自然"

"钟表时间"并不是衡量幼儿时间观念的惟一合理尺度.幼儿具有自然赋予的先在的时间观念,这种自然的时间具有内在性、无意识性,是幼儿转变生长的条件,是幼儿创造性潜能发挥的前提.因此,现代幼儿教育时间应"取法自然",以达成个体内在时间与客观时间的和谐与平衡.     

从时间知觉到时间心理学的研究

时间心理学的发展趋势是随着研究方法的不断进步和研究视野的不断扩大,研究的领域逐渐拓展,逐步走向多方法多取向的、全面综合的研究。在早期的时间知觉阶段,研究了刺激的时间特性的影响;在时间认知阶段,研究了个体的认知因素的影响;在时间心理学阶段,研究了个体的人格特征的影响。我国时间心理学的发展趋势是起步较晚,但进展较快。在时间知觉阶段,我国的研究相对较少,而到了时间心理学阶段,我国的研究已经走在世界的前列。     

Hobby Time

柏余：业余时间里,你都做些什么？有人喜欢打篮球,有人喜欢游泳,有人喜欢唱歌……来看看老外朋友都有些怎样的爱好吧!     

Fun Time

时间对猪有什么意义 一天，有一个城市里的游客来到一个小乡村，在乡间路上开着车，想看看农庄是什么样子，也想看看农夫怎样种田过日子。