自然发生的

This method represents the virtual objects in Euclidean space instead of in affine space, which is consistent with the popular graphics rendering tools such as OpenGL and is more common in practice. A new classification based local and global tracking strategy to match features between the reference image and the currently frame directly is presented, which enables the augmented reality system working effectively even under large changes of viewing angles. A novel affine coordinate system definition method based on a collection of feature points is also proposed, which makes the tracking method effective even when not all the reference points are detected during the whole process, as long as there are at least four pairs of reference points correspondences.

该方法以仿射变换为桥梁来建立欧氏空间下的摄像机坐标系与世界坐标系之间的变换关系，它与OpenGL等当前流行的图形渲染工具一致，具有更强的通用性；采用基于分类的自然特征匹配策略，能够在视角和视点发生大幅度变化情况下依然正常工作；提出基于特征点集合的仿射坐标系定义方法，使增强现实系统在最小配置下只需4点追踪成功即可完成注册，比需要6点的透视投影方法具有更好的健壮性和精确性。

The results are listed as follows:(1) In peneplain with plenty water-resource, hexagonal spatial structure of urban system can be formed. Due to differential competed function of central places, the hexagonal system is distorted. The result is that the area covered is decr eased and the girth is unchanged——but every border is usually unequal;(2) A pattern of pentagonal system evolves from hexagonal system controlled by a river;(3) A pattern of quadrilateral develops from hexagonal system under two parallel rivers;(4) The equal distance distribution of central places in narrow geographic space has its special reasons. The results are very important for understanding urban's formation and development and urban plan in Huang-Huai-Hai plain.

本文通过自然地理因素中水文、地形这两个重要要素对城镇体系空间结构形成的影响，分析了华北平原区在不同要素影响下的城镇体系空间结构样式：①在水源充足的准"均质"河北冲积平原上，基本满足六边形形成条件，但由于周边中心地发展竞争力不同，故使得正六边形发生畸变——覆盖面积减小而周长却保持不变；②构建了在一条河流影响下的六边形网络结构朝五边形网络演变的模型；③构建了在平行状河流作用下六边形网络向四边形网络演替的模式；④指出了在水源充足的狭长地理空间，城镇体系空间结构发育成等间距的现象与原因。

In addition, there is a "pseudo-myopia", which due to excessive use of regulatory role For example, in children, adolescents reading, the reading with the eye too close a distance, it is bound to increase the regulatory role of the eye, causing ciliary muscle function to enhance or spasm, this occurrence of myopia in school, and family to learn some of the irrational factors , for example, a natural classroom lighting, lighting, lighting, seating, seated, excessive use eyes, pay attention to eye health, eye fatigue is closely related to myopia is divided into mild myopia (-3D below); moderate myopia (-- 3D - 6D),-6D or more as high myopia, myopia authenticity required to wear appropriate glasses, children and adolescents need to be fully dilated in the absence of regulating state optometry, refraction measured by the eye itself, after the age of 18 , in the myopia progression-free circumstances, do radial keratotomy to correct myopia.

此外尚有一种"假性近视"，其因过度运用调节作用，例如在儿童、青少年读书时，读物与眼球的距离过于接近，势必增加眼球的调节作用，引起睫状肌功能增强或痉挛，这种近视的发生与在学校以及家庭学习的一些不合理因素有关，例如教室的自然采光，灯光照明，坐位、坐姿，过度用眼，不注意用眼卫生、眼疲劳有密切关系，近视眼又分为轻度近视（－3D以下）；中度近视（－3D—－6D），－6D以上者为高度近视，真性近视需配戴合适的眼镜，儿童和青少年均需充分散瞳，在无调节状态下验光，测出眼球本身的屈光度，18岁以后，在近视无进展的情况下，可做放射状角膜切开术，以矫正近视。

First of all, I want to make it clear that I've never tld somebady that I certainly will move to Tripos. It once happened at the second week that I arrived cause I thought the host sucks. And I didnt get along well with Natalie. Tripos has both you and Dingding, and Michelle- one of the only 3 friends I have here. And several weeks passed, I am not that sure anymore. You know me and Natalie are getting better and better. And Cloey kept telling me she cant promise me there will be a room available after Easter. Further more, I doubt if I have enough time to pack all of my staffs here. Even thinking about all of these makes me feel headache. And once I get back, just with Naatalie, I was only thinking about the good thing of living here. And at the time I was walking with you, all of the disadvantaged poped up. So I got confused. Not until today I havent made my mind. I dont know where did you get that so-called "every knew it, and I am the last to know" from. Even myself dont know what I/m ganna do, how come they knew?

首先我想说清楚~我从来没告诉过任何人我会住进Tripos~这第一发生在我到英国的第二个星期因为我觉得住宿家庭很恶心~而且那时我和Natalie还不能单独处得很自然~我在这惟独的三个朋友~你和丁丁还有Michelle住在Tripos~几个星期以后~我不再那么确定了~你知道我和Natalie相处得越来越好~Cloey也一直在告诉我她不能保证复活节假时会有空的房间~更多的是~我怀疑自己能否有足够的时间把我的行李都搬来~甚至在想这些所有的让我很头疼~有一次我和Natalie单独回来~我只想着住这的好处~但我和你走的时候~所有的不好的地方都突然出现~所以我很迷茫~不只今天我思考~我不知道你从哪里得出'每个人都知道~只有我最后才发现'结论~甚至我自己都不知道我该做些什么~他们怎么会知道？

The final goal is to confirm the unreasonableness of the abov...

通过对公共政策在国际商事仲裁三个领域适用的分析，可以得知在公共政策和当事人意思自治发生表面冲突的情况下，国际商事仲裁的正确定位是两者转换的平台：即公共政策通过国际商事仲裁使其自然融于当事人的合意；而当事人之间的合意，通过国际商事仲裁也可以滤掉不符合公共政策要求的部分，最终达到两者的和谐发展。

As well as cover type of the primary wildwood, on the other hand, it is also disturbed by human activities, which mainly represents as the reachability and frequency of anthropogenic influence as well as the selection mode of woodland utilization including mainly including population distribution, traffic condition, social needs as well as economic industrial structure etc.

林地的变化是人类活动作用于自然资源与环境的一种最为显著的表现形式，其发生和发展一方面受到区域自然地理环境背景的直接控制，主要包括气候、地貌、土壤等以及原生林地覆盖类型，另一方面也受到人类活动的干扰，主要表现为人类影响的可达性与频率以及对林地利用方式的选择，包括人口分布、交通状况、社会需求以及经济产业结构等。

Meanwhile, human brains turn out to be extremely permeable (they naturally mimic the neural firings of people around them).

同时，人类的大脑被证明是有浸透性的/相互联系的(他们自然的模仿神经元同周围的人发生联系)。

Taking the long-term operation of commercial fishponds as an example of sustainable natural heritage preservation, this research project seeks to show how the local ecology is socio-culturally related to its surrounding communities, and to explain why freshwater fishpond farming is an essential ingredient in the sustainable development policy of Hong Kong.

把商业鱼塘的长期运作作为自然遗产可持续保护的个案，本研究将表现地方生态如何和它周围的社区发生文化社会性的联系，并且解释为何淡水鱼养殖业是香港可持续发展政策的必要部分。

Important outcome of science is a scientific,or naturallaw:a well-tested and widely accepted description of what we find happening over and over in the same way in nature.

重要成果的科学是一个科学或自然的法则：我们找到发生了一个行之有效和广为接受的，同样的性质。

On the basis of field investigation about the arbor, shrub and steppe communities in Wuqi county, the authors quantitatively analyzed the vegetation recovery and the relationship between vegetation recovery and soil erosion.

中文摘要：在对吴旗县乔木林、灌木林和草原群落野外调查的基础上，对其植被恢复及植被恢复与水土流失的关系进行了定量分析，结果表明，在吴旗县这样的自然地理条件下，通过退耕还林、封山禁牧，植被完全可以得到恢复，完全可以控制水土流失的发生。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。