yesterday i read a book the name of the book is《dr bethune》.
dr bethune was a famous doctor from canada. in 1938 he came to china. at that time china was at war with japan. he worked as a doctor in the chinese army and saved many soldiers’ lives. he worked very hard and became sick. dr bethune died in 1939. he was only 49 years old. he was a good man and we remember him today.
i think the book is very very good!
written by wu qingxiang
mar. 31
how to do research
——reading after a science paper
these days i am busy preparing my dissertation which is about web usage mining . i read some english papers and learnt much from them . and now i want to say something about a paper titled “web usage mining:discovery and applications of usage patterns from web data”.
this is the first english paper i read about dissertation and gave me great help .
this paper is a review about web usage mining. it introduced web usage mining in detail . although it is a little old for it was published in its contents are very useful today . it is organized according to the sequence of web usage mining and the six main parts are introduction which tells me what is web usage mining the sources and abstraction of web data the three steps of web usage mining taxonomy and project survey websift overview privacy issues . the third and fourth parts are most important . it had a list of existing project about web usage mining which i saw many times in other papers but this paper is the one creating this list . besides it has been referred for more then twenty times . as we all know that the higher the referred number is the more important the paper is so i consider this paper to be an important and successful one in this region.
in my opinion the success of this paper dues to three reasons . the first reason is the profound computer knowledge owned by the authors . web usage mining relates to many subjects such as artificial intelligence ontology semantic analysis but the most basic knowledge is computer science . the four authors are all professors of department of computer science and engineering in university of minnesota . for myself i am not major in computer science and i am not very good at computers so i feel a little difficult to understand technologies used in this region.
second they had read a large number of papers before they wrote this paper . there are fifty nine references listed after main contents . “stand on the shoulders of giants” this sentence tell us a truth : one can never successful all by oneself . and what’s more learn from others can save a lot of time and energy especially for us new learner . how to learn from others is a skill all of us should master but learning doesn’t mean copy or plagiary . other people’s knowledge and production is just our foundation upon this foundation we must have our own thoughts and creation. there are many remarks in this paper where referred other’s production.
third the authors had the experience of developing a web usage mining project . they don’t just engage in idle theorizing so their comprehension on this issue is greatly profound. they know what we may meet in a real project development and they know how to resolve them . after reading this paper i also read some other papers written in chinese . some of them are not based on real project and can not give useful resolution . websift is the name of system they developed which can be used to data mining and analysis .
i wrote this article not only because it gave me much help in preparing my dissertation but also because it tells me how to study and how to do research . honesty and preciseness are two essential making a researcher must have . hard-working is the necessary condition leading to success . this is just the beginning of my dissertation i should learn from these four authors both their knowledge and their attitude to study.
是写信人对收信人的称呼用语。位置在信内地址下方一、二行的地方,从该行的顶格写起,在称呼后面一般用逗号(英国式,也可以用冒号(美国式。
(1写给亲人、亲戚和关系密切的朋友时,用dear或my dear再加上表示亲属关系的称呼或直称其名(这里指名字,不是姓氏。例如:my dear father,dear tom等。
(2写给公务上的信函用dear madam,dear sir或gentleman(gentlemen。注意:dear纯属公务上往来的客气形式。gentlemen总是以复数形式出现,前不加dear,是dear sir的复数形式。
(3写给收信人的信,也可用头衔、职位、职称、学位等再加姓氏或姓氏和名字。例如:dear prof. tim scales, dear dr.john smith。
一走进我的卧室,最显眼的就是那一排排整齐的各式各样的.娃娃和一大堆的芭比小玩具.这可是我从生出来到现在所有收到的礼物,不管是新的,还是旧的,我都会完整无缺地保存下来.芭比玩具的下面是我最喜欢的书柜,里面摆满了各类书籍,就象一个知识宝库,它们给我的生活带来了欢乐,学到了许多课堂里学不到的知识.书柜的左边是我那张可爱的硬板床,虽然累的时候趴在上面不是像弹簧床一样的舒服,但它却培养了我从小到大不沱背的好习惯.我真高兴.
我的卧室还有三个柜子,里面分别放着我上学以来,每学期获得的奖状和学习用品.卧室的正中墙上是一盏每天都陪着我的小猪灯.上面有两只形状不一的小猪,每天上床睡觉时,我总要跟它们说晚安,我才会进入梦香.
左边墙上的下面是我的衣柜,里面放着我春.夏.秋.冬四季的衣服,有我最喜欢的五颜六色的短裙;粉红色的纱裙;还有上次去旅游妈妈买给我的苗服;等等.
每天放学回来,回到自己的房间,开始做作业,看电视,我就有无拘无束的感觉.总之,一句话:我爱我的卧室,我爱我的自由快乐天堂!
在正文下面的一、二行处,从信纸的中间偏右处开始,第一个词开头要大写,句末用逗号。不同的对象,结束语的写法也不同。
(1写给家人、亲戚,用your loving grandfather,lovingly yours,lovingly等;
(2写给熟人、朋友,用yours cordially,yours affectionately等;
(3写业务信函用truely yours(yours truely,faithfully yours(yours faithfully等;
(4对上级、长辈用yours obediently(obediently yours,yours respectfully(respectfully yours等。
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