不再发生的

I SWEAR by Apollo the physician, and Aesculapius, and Health, and All-heal, and all the gods and goddesses, that, according to my ability and judgment, I will keep this Oath and this stipulation- to reckon him who taught me this Art equally dear to me as my parents, to share my substance with him, and relieve his necessities if required; to look upon his offspring in the same footing as my own brothers, and to teach them this art, if they shall wish to learn it, without fee or stipulation; and that by precept, lecture, and every other mode of instruction, I will impart a knowledge of the Art to my own sons, and those of my teachers, and to disciples bound by a stipulation and oath according to the law of medicine, but to none others.

我愿以自身判断力所及，遵守这一誓约。凡教给我医术的人，我应像尊敬自己的父母一样，尊敬他。作为终身尊重的对象及朋友，授给我医术的恩师一旦发生危急情况，我一定接济他。把恩师的儿女当成我希波克拉底的兄弟姐妹；如果恩师的儿女愿意从医，我一定无条件地传授，更不收取任何费用。对于我所拥有的医术，无论是能以口头表达的还是可书写的，都要传授给我的儿女，传授给恩师的儿女和发誓遵守本誓言的学生；除此三种情况外，不再传给别人。

I swear by Apollo the physician, and Aesculapius, and All-heal, and all the gods and goddesses, that, according to my ability and judgement, I will keep this stipulation to reckon him who taught me this Art equally dear to me as my parents, to share my substance with him, and relieve his necessities if required; to look upon his offspring in the same footing as my own brothers and to teach them this art, if they shall wish to learn it, without fee or stipulation; and that by precept, lecture, and every other mode of instruction, I will impart a knowledge of the Art to my own sons, and those of my teachers and to disciples bound by a stipulation and oath according to the law of medicine, but to none others.

医神阿波罗、埃斯克雷彼斯及天地诸神作证，我———希波克拉底发誓：我愿以自身判断力所及，遵守这一誓约。凡教给我医术的人，我应像尊敬自己的父母一样，尊敬他。作为终身尊重的对象及朋友，授给我医术的恩师一旦发生危急情况，我一定接济他。把恩师的儿女当成我希波克拉底的兄弟姐妹；如果恩师的儿女愿意从医，我一定无条件地传授，更不收取任何费用。对于我所拥有的医术，无论是能以口头表达的还是可书写的，都要传授给我的儿女，传授给恩师的儿女和发誓遵守本誓言的学生；除此三种情况外，不再传给别人。

In a database the concept of an example might change along with time which is known as concept drift When the concept drift the classification model built by use of old data is unsuitable for classify new data Therefore concept drift has become a hot issue in data mining in recent years Although many algorithms had been proposed to resolve this problem they can not provide users with the reason of concept drift However a user might be very interested in such rules For example doctors want to find what makes disease change; researchers want to know the reason of the variety of the weather; and decision makers would like to understand why a customer's shopping habit change In this thesis we propose a Concept Drift Rule mining Tree called CDR-Tree to solve this problem CDR-Tree can not only find the rule of concept drift also build the prediction model for both old and new data at the same time

无论在大型资料库或现实生活中，同一资料样本的概念有可能会随著时间的递移而改变，也就是产生所谓的概念漂移。当样本发生概念漂移时，由旧有资料所建构的分类模组将不再适用於预测新获得的资料，因此，近年来概念漂移已成为资料探勘中一项热门的研究议题。虽然已有？多学者提出不同的技术来解决概念漂移的问题，但是这些方法都是利用修正或重建的方式来产生适合新资料的预测模组，并无法提供造成概念漂移的原因。然而对使用者而言，其感兴趣的可能正是这些引起概念漂移的规则，如医生可能想了解引起疾病变化的主因、学者会想要知道气候转变的规则、或是决策者想找出顾客购物习惯改变的因素等。因此，本论文提出概念漂移规则探勘树( Concept Drift Rule mining Tree )，简称CDR-Tree，来解决这个问题。CDR-Tree不但能探测出造成概念漂移的主要原因，亦能同时建立新旧资料的预测模组以供决策者运用使用。

Fourteen parts of grammar were described, including the measure words, the location component, pronouns, helping words, adverb, verb auxiliaries, comparative sentence, giving sentence, dispositional sentence, passive sentence, negative sentence and question sentence.

在清末粤方言语法材料的基础上考察历时演变，共出现29个变化点，主要包括：（1）量词&样&、&回&和&个&使用减少；（2）&度&由量词发展为处所词后附成分；（3）清末疑问代词&边&和&乜&竞争，今天&乜&的用法被削弱；（4）&V得&的用法扩大，改变&可以&和&能&的地位，助动词&识&的用法增加；（5）副词&啱&意义扩大，一些双音节副词出现语素更替；（6）动词后补成分&高&被&上&取代，&起嚟&和&去归&消失；（7）表示完成的动态后助成分&哓&完全消失，由&唨&取代，&V下&之外出现动词重叠表短时、随意的用法；（8）句末助词&呢&的读音、&咋&表达的事态或者语气的意义稍有变化；（9）给予句&俾+N〓+过+N〓&是清末的主流形式，今天以双宾语形式&俾／V+N〓+N〓&为主，&过&消失；（10）出现像普通话的&比&字句；（11）清末文献里可以引出处置对象的&戒&不再使用；（12）&俾&发展为一个比较成熟的被动句标记，&被&的使用消失；（13）单音节形式的否定词增加；（14）正反疑问句发生根本性的变化，宾语和补语等补足成分转而出现在否定形式之后，选择疑问句连接选择项的&嚊&或&口被&消失。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐