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Atypical problem is that our learners of WBI have no enough dynamics to study whenthey face the key composition of our WBI—online course. How to raise the learningdynamics by effective designing of online course is very important. In view of this, westudied how to improve learning dynamics of WBI learner by effective design of onlinecourse.

一个典型的问题就是，我们的网络学习者在面对我们网络教育的核心成分—网络课程时，积极性并不高，也就是说没有足够的动力去学习，由此看来研究如何通过对网络课程的有效设计来提高学习者的学习动力的问题有着相当重要的意义的。

In the third part, by looking into traditional roles of teachers, I mainly put forward that under the implement of mathematics course standard, the role of the mathematics teachers in high schools is the organizer, instructor, participant in the study of the students, the cultivator of the study ability of the students, the researcher of the community types, the builder of the course ,culturist of the education teaching ,the open teacher of teaching introspect. And by analyzing the factors that influence the roles of teachers, we know that the key is to improve teachers'quality.

第三部分通过对传统的教师角色的透视，笔者提出在实施数学课程标准下中学数学教师的角色主要是学生学习的组织者、指导者、参与者、学生学习能力的培养者、教学反思的实践者、教育教学的研究者、课程的建设者和开发者、社区型的开放教师，并通过分析影响教师角色定位的因素，得出教师素质及时地得以提升是促进教师角色定位的关键。

Dendrology is a difficult course for its abundantly abstract and trivial contents. The key to a better teaching result for the course is that teachers should not only master relative concepts, terms and feathers of trees, but also pass them to students by appreciate methods while increasing students' interests to the course. A challenge is that there are numerous terms about trees and most of them are difficult and unfamiliar words to most people.

树木学是一门内容较深奥抽象又纷繁琐碎的学科，老师对概念、术语和树木特征的准确把握并把其恰当传授给学生、激发其对课程的学习兴趣是教好树木学的关键；而有关树木和植物分类学的术语对大多数人而言又是很偏僻、难以掌握的词汇，且其数量巨大。

I want to love you But how this is That I can love you If I do not see you I want to love you Very pure or almost Like the priests Who do not marry The clotrées sisters Who preserve For a good old man God who hides I want to love you Of course I dream some But how want You that it goes I want to me Mo well Quer of the proverb Who known as "far from Eyes, far from the heart " God that they is false That it is sour That they is express To frighten us I want to me endor well Mir each evening By blotissant me Against anybody With your body In my memory As a grandmamma Who cries her man I want to love you Even until believing In the possible ones Advantages To mix Our two stories Into perpetual Shift I want to force well All these chances Who r' fuse to play In our favour And then to gain The chance to see you Two small days Or two small hours I want to love you But how this is That I can love you If I am not there To wrap you Of my tenderness And to comfort you If that does not go Yes I want well To love you by far The very full heart Of your great vacuum To love you love And of sorrow To love you for nothing Wet eyes I want to love you But to be frank I am not solid If I do not see you I am like blind man Without white cane Ni dog-guide… And without your arm To cross This street That one calls The ocean To cross But to you Y' does not have a large Assez rainbow I want to love you Of course In any event Do I have the choice I am trapped I am lost I turn in round I love you already Even if I feel That I éreinte With you to seek Tended arms In this alarming Labyrinth Too much complicated And too twisted I will love you Even if all that It is without exit It is impossible And I will believe in it As others believe In the Baby Jesus And with the Bible I do not know yet How this is That I will love you If I do not see you But I will love you It is a promise Hear you That I say to you there?!!

我想这是爱你，但我能怎么爱你如果我不爱你我想看到你还是很单纯的，几乎没有人喜欢娶了神父clotrées姐妹保存了老好人上帝躲在我爱你我当然希望有梦想但是不用我说，你怎么想我想好树种的谚语谁谟称为"远离眼睛远离心脏"，他们是上帝，这是假酸溜溜地表示，他们是吓唬我们，我想每个晚上我可逆好空间站的blotissant我对付谁你记忆体作为grandmamma谁喊她文我想爱你直到可能的优势，相信我们的两个故事结构转变成永恒的力量，我想这也是所有那些住宅机会'导火线玩，然后争取对我们有利的机会看到你两个或者两个小天凌晨爱你，但我想这就是我如何能爱你如果我不存在包你温柔地安慰我说，你如果不走的话，我想好爱你的心满满远远贵真空悲哀的爱你爱你爱什么，我想爱你眼睛湿但坦白说，如果我不扎实，我看不到你我一样盲无镍白色手杖狗：：没有你们的引导手臂越过这条街，一个电话，但你越过大洋肽Y'没有大assez彩虹我爱你，当然希望无论如何我做我的选择，我被困我感到失去转向轮即使我爱你我觉得我已经与你éreinte寻求在这一惊人的武器往往迷宫太多、太复杂，我爱你，即使扭曲，这是没有全部撤离是不可能，但我相信别人相信耶稣和圣经的婴儿我还不知道这是怎么说我爱你如果我不爱你，但我会看到你是一个承诺，我对你说你听？！！

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

For eliminating the hidden danger caused by the misiperation in the present operation law and flow, the system will manage the operation rule and the operation course by the computer, at the same time verify the validity of every operation step of every course to avoid operation mistake as a result of the carelessness of operator or the change of the operation mode.

本文所建系统针对供电公司现有操作制度和工作流程中的隐患，利用科学的算法和规则进行安全校验，避免了电网操作过程中由于人的疏忽和电网的变化而引起误操作的发生。

The third part elaborates the strategy of selectivity attention and the factors which affect it, then combining with the design of web-based course "The Design of Active Sever Page" which was designed by the writer, elaborates how to apply the strategy of selectivity attention in the the web-based course: 1 design clear navigator; 2 ascertain the target of instruction; 3 take problem as the direction to cause the student's attention;4 the preceding analysises: the analysis of the need of study, the analysis of learner and the analysise of study content; 5 combining muultiual sensorial passages to present the stimulability to course the attention of the learner; 6 enhance the characteristic of the main body to cause the student's attention;7 emphasize the student's position as main body.

第三部分详细介绍选择性注意策略及影响选择性注意策略的因素，之后结合笔者设计的《 ASP 动态网页设计》网络课程具体阐述网络课程中选择性注意策略的应用：1设计清晰的导航；2确定可观察可测量的教学目标；3以问题为导向引起学生的注意；4前端分析：学习需求分析、学习者分析和学习内容分析；5多通道结合呈现刺激，引起学习者的注意；6强化主体的特征引起学生的注意；7强调学生的主体地位。

It is found that the bearing capacity of large diameter belled pile will increase with the increment of thickness of supporting course, bearing capacity and proportion of bottom-resistance are affected more notably by supporting course thickness when the supporting course thickness is small.

可以发现，大直径扩底桩承载力随持力层厚度的增加而增大，且在持力层厚度较小时持力层厚度的变化对承载力及桩端阻力所占比例影响显著。

The time lag of Chinese course is that there is a relative lag between the development of Chinese course and request of times. Such lag is decided by hominine factor, external environment and idiosyncrasy of Chinese course.

语文课程的时滞是指语文课程的发展相对于时代的需求而言是相对滞后的，这种滞后性是由于人为因素、客观环境以及语文课程自身特征共同决定的。

According to the construction course and finished dead state of the inclined tower cable-stayed bridge without back stay at Tongling Road in Hefei and combining the modern theory and method of the bridge construction control mentioned in this paper, established a space model by large-scale general finite element software ANSYS. It can obtain some valuable result by emulating analysis of the bridge which is under the construction course and finished dead state. It can provide an instruction for the Tongling Road bridge with the result and construction job site monitoring data.

文中根据合肥市铜陵路预应力混凝土无背索斜塔斜拉桥的具体施工过程和成桥状态，结合文中介绍的现代桥梁施工控制理论和方法，运用大型通用有限元软件ANSYS建立了三维空间模型，对该桥进行了施工过程和成桥状态下的结构仿真模拟分析，将模拟计算结果与施工现场振动频率法索力测试数据和分析结果相结合，为铜陵路无背索斜塔斜拉桥拉索张拉施工提供指导，及时调控，确保了该桥在成桥后线形美观，受力性能满足要求。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。