                           ˿µϣ2012423գ

12.04.20-22ûи
12.04.23, ӡжŮ
12.04.23, ̷òźݻȡȻؼң
12.04.23, תȾȺӣӦתпǸ
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12.04.23, iheaingĽѩ⡷
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12.04.23, 12306ӦָѹڽƱ

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ΪʲôھȺУ۵ıͬ

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ӣĻͻܿȺдȥںԻԽԽ࣬
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ĵĿƼߣܱͬ顣

ڶ磬ںݿƼ¥ˡѧ
豣塷Ŀձ档ǷϮ״档Ҳǵһ
ֳͳԴ۴ĸǻٲPPT
ȻǾ׼ģͼĲï˵ʼҪӸձ̳
һʿʦƭֽ𣬴Ҷרע
㽭ӵĶҲɷá磬Эϯ룬Ǳ߳ԱĿѧ⣬
һֱܰΣȵ̣Եò࣬嵭Ĳ˳ԣ䷳ػش
ǸϣŹֵʣиоԼĿϼӵ
ĿݲݶĶãҽΪʲôܱҽѧϿɣΪʲôҪƹ
תȡܸܶý役עġФϮ񰸡Ҫʽ
ͥȥ·ϣֻͣۺϸϢԴͻ϶Ф
Թɱδˣƺܲ

Фӡķӣ죬ٲȻý
ˣýӻƸΪĿαůҺ
̣47磬ӰƻݡתŻҪ˫ֲ
¼Ŀɽ·ɢ̽ҽΪ
ʲô˵Ǿѧƶǿѧ⡣ڶ磬ںίУã
˸ΪѧʱαѧĽѧ߶ϯ̨
뿪Ļȥɵװݵ䣬̸ۣеѧ
ζʶѭ֤ҽѧΪ˵⣬룬ڰҽǾ
õģҹƣҲ̫࣬ⲻ˵磬ͣ
ʦʦѧ죬ܴѧУѧ֮
Уݷںʦѧݽⳡѧ
ζĽúʦ¼ݽⱾǡѧ
ܣѧ淶ĻȻֳھò񫣬
ǴġϮšϮ¼ĺѧòдģ¼
ӱס˸顣ںʦѧĽڶ
ͳڡǮ籨ͷص㵼Ŀռ
λá49磬Ȥزιﻨ㡢̺̫幫԰
Ȼʱۣ벻˵رʳ˼̻Ĺ
ҲȤҲͻȻ˷ӻôɰٲô
ӡ

ʿ

Ͼǵһˣӿϰϣ
ӥƸߵ㻢ѰԼȤһ׼Ŀ꣬һץһ
׼ʧֵʱ򣬰һЩƭӵĻƤҲһЩˡĶ̣
칦ܵһ̶Ʒҽ򱾣ѧٵĳɹѧʦ
ƿľӰƣдܻƺɫܱ֣ͯԨ࣬
Լ羫Ӣдɵżдֺȡӵ
鷢Ūһ㶯ҿһٸӣʾΪ֪һ棬
һĻĻ־磬Ȼ󲨣һȦȦ

йһ֣κʽĹֶۣ߻ָĸ
ۡӽԹ̫࣬ԼȺåָĲ֮ĩƪ
¶ԼҲٳϮʵʤ۱磬ΪԵÿЦ
µǣйǷǹ۵ĮĿ͡˶ƿѧٲΪȻ
ƿǸвŻˣΪʲôҪѧץסţ̬洦
ƿĸУ̫ƽѧ20Ϊй˴߹ܡ߹ٺ
ЩƿУǲǸƿĳɹ

˳ʫƣҹҺɫ۾ȴȥѰҹӲ
ǺҹпѰҹĿɮ˹ӣ߹ٲ
Ŀġ˿𰸾ˣºᡢաг
ൺίǵȵȣӶˣϧý岻ԸܱҲ
֤Ӳý塣ԣѡǱٵý塣 ³Ѹ
˵ĺã·ҹҲ粻˵ĺðաϧ

ʥĿѧã˺ܶ಻г˭֮Щ꣬ʿ
һֱûţѵǺѧܣƲȱʧ
⣬ձڵĸ硢йزżָ˼йأƽ
ĶۣǴͶȡɵİͬʱӦôԴͷȥ
⣬֢ҩ ڸʢеĴ󻷾£ڵĿƼӢ
ơѹ١Ϯѧ˱ȱȽǣ³ѸµĿҼоԣ
鲻͵񡰳Ϯԡţӽ¶ǧ
ѧܰǱɽһǣ˵ӳйһ
߲ѧܡĽںǷһе֪ӿѧ
ĻһѷܹȡôĵٷȥŬѧˣͨ
ѧӰȥ绯᣿

Ϯҿƪº˼ƣ
ʧܵйˣйܳɹ߿ԹʵˣһǶ
һŵĹȣҪʵΰ˾޿ܣпԶ
ܶӣūֻӣĸɣйҪ
ʶֻǷǡġľ񡱣 йЭǴǷ볤
йЭдԮӣӲһս
Эǰ̨λʱҲͬ跽ӿ϶ֻ֧֣ϧЭ
ϾӰޡ

(XYS20120423)

˿(www.xys.org)(xys6.dxiong.com)(xys.ebookdiy.com)(xys2.dropin.org)

ڡ¼ʷܽ

ߣس
http://blog.sina.com.cn/s/blog_a2bdd38301012ou3.html

ǣйȱĲǡơǡ桱ûС桱Ϊ͹֧ţ
ơͱضαƣעǻƤôۣ
ֲֺãҪľ桱ҪľйӴͳĻ˸
߳ȥ׷ʵʵʵ֧źͼලơʥˣװʥ
ˣҡײƭʵСˡҵԸʵ

1.      ¼ж

¼һȺ˻ɳߺȱѧʹ
šƷʵߣΪ˴ʣ¸Ĵ񽱾ʹ
˽ףΪҺ͹ĺǾ丸ڵ
ڶдּ湫˾깲ͬװĲһӮĻƷ
ӡ

ṩ֤Ҫࣺ

һࣺƷ䡢֪ʶܴݣ
ڶࣺƷҸΪӦд໥ͻì
ܵĵط
ࣺ¸Ĵ񽱹вϹ涨볣
ɵ㡣

֤ڷӣǵ˵΢϶ϸС
⣬ΪҲҪ֤

ࣺڼҵ̨վķ̸ƵʾԼƷ
Ϥ̸ѧƷʱƣӦԣͿն۵
ţЦķȫȱһӦеĻŻ߱ı
ôһ޵īԺȱյĳ
һҡòԴҲѽͣΪ̸Ů˵ʱ
ͱȽϴݺšҵʣ㵱̸ͿƵʱǿ϶ܹ
ܵġ

ࣺ⵽ɺС⵽ɺʼǴв
ɵߵͣˡӲɺ
޸ɴȡ˵ǿЦġûǳֹ
˼Ҫϣֳߡ̶ָ⣬Ļ
⣬⵽ߵвUSBȵȡ֮ܶ
ֻȡֲԵĲӦԣֱɡɵǺĲ
ֱӶԿɵѰ취ǵ¶ŻԲŷˡ
ܶеķʽãֻ䡢áߣԷ˿͸
ơ磬㿴ĸԼʱС΢ͷġҲս
װ׶Ǳ۸ϣƭȡŮ˿ͬ顣ֻܱءԵط
ֱӽ⣬飬˿ʾǳΡ
úܶ˴ʧ

𣿶ĻشÿԼжϡ
˵ûֱ֤ݣͲжʣݡʲôֱ֤
أ
ǣ˿ˣ֤˵ˡ˵
ģ
ǣۿˡºСң㿴Ĳһ
ʵģǵտġе4ɣۿĶҲǼ
ǣ׿ڳˡǣҲвȲѶѽ

ԣûоֱӵ֤ݡֱ֤ݱҲǼ֤ݡ
κжϣֻһЩԵġӵ֤ݡ㲻κμ
֤ݣͲκжϡôеﷸӦͷš

һ뺫ƵǾ׷档׷ڵҲż񰡣
Ϊֵºëϯĸгˣż
ҵ档ûбںܶ˶׷棬˵
ôĸүү̣˵ôôǶȼѵƬ˵
¼ҲܿɣǷ׷ϸڣΪģ
࣬վڷ񡣻ָ׷߲׼֪ôģ
ȵȡЩȻֻ֤ݡ׷浽£
Ҫҵֱ֤֤ҲǲܵģⲢÿ˶
ԼжϡУںܶ͹Ա˵˼ҸܰΨװ
ְʲôġƾҲǼ֤ݣֱ֤ûеġֲϣû
͹׷Ӱжϡ

ԣЩɺļ֤ݣھҪÿԼжˡӰ
;˵жϵ֪ʶṹж϶Ĺϵء
磬ʼͺϲ˺ͿʼͲϲĺˣжϿܾͲһ

ұ֮ǰǱȽϲġ׼ȷ˵ϲʱ
ġȻһ꣬ôодС˵Ҳò
ϲġֳʶɺ׷󣬶Թ
ƽźⶼĵġͬͻøСҰ80
˵úܿǸѵõšǴڵġžָ
ʲôɸɵúõˡɵԺ;Ϊ
֪йټٻࡣˡš½ڣ治һ
дĶȻС˵ܲҲǳһ顣
ṩЩ֤֮һֱƭĸоѹֲסˡҵóۣ϶
ҡΪûдһƪͨ˳ĳ500ֵģ
ͺ΢´󲿷Ǳ˴ʵġ



ΪκǳˣֻҪûи򣬶Ӧõóۡ
˵㲻㵱һôһѸֽĸ֤
ңҪһĸգ֤Ǹ书֣
Ҫǰ֤ݣֻĺ͵壬ƵǡŻ¶
Ӧԣηġʶáġȡ⡣ֻҪɵӣ
ôﶼˡ

Ϊʲôк֧ܶأϵЩ֧߲
һǮġˮ϶ϵǻˡô֧ߵ
ļֱ֣Ϊʲôԭ֧أ


2.      ֧

Ϊе֧߿ɷΪࣺ
AࣺǰǺƷĶߣϲƷϲˣ
ûǼҵжϡŮΪ
BࣺѾ˺ǼҵжϣΪ¡
ĳҵˡ粻ڸĸ˼ռȵȣ
Cࣺ֪ǼңѾͺγ湲ͬ壬
Ҳ٣ֻͦԱȫĳЩ磬ĳЩվĳЩ
磻
DࣺѾ˺Ǽҵжϣķ˿٣
ͨ飬ͨͦı档ˣǰ
Ժָ棬ͦȷġ̬ھͺܳ
ˡ

CDأȽϵĿɳܡҾͲм˵ˡҪ̸AB

ΪʲôԴͬһ֤ݣкܶܵóǼҵĽۣеȴò
أøӰжͻ̡A֧ϵͦģ
Ǻķ˿Ϊʲô˿һƫ̻żأѵ˿һ͹
ڣ

ʶԴӿ˺ҵʱʼʶˡ
ʶǶȡһǶǳԼ󿴵ʶ
ڴĳǲˣ˭ǲ̫ûòˡԼ
ԼԼ˵ʶڶǶȣǰѶ
󵱳ҵĽǶȣԼڶ֮еĽǶȡе㲻⡣ô˵
ˣʣʲô㷢ֺѻشҪҵԼҲģ
ûһԼԼľ֮Уж֮С
龭ȵȵܺ͡ԺԵﹹ
أ㿴飬͵ߣ˵һ֣ʵ
ϸ˵һ֣㡣Ҫϲߣкʵ
֤ݣǱȽѵģΪǾǷԼ

ҵʦԭǽʶ۽ṹ۵Ĵߡ
Ǻ˿ûʲôϵģҲáŮ˿Ȥ
ֻ÷˿׬Ǯ׬ǵǮҪЦɵ˵˿Բô
Ƿ˿ʶ֮оͰѺԼԼǰѶԺһ
з񶨶Լķ񶨡Բں֤ݣ˿ʶų⣬
ҲҪ⡣ȥࡣԼһһ
ҪȥһǾܲż飬ΪǾԼ顣
˵Ǻܴġǵʶ̫ˣԼͶżϾͲܳ
ˣ񶨲Ҿ;ãһ˵30ϣϵطۺĻ
Ǿǡʶ̫˿̻żһֵ͵
ʶ󣬲Ǹô򵥣бȻԺձ档

ôߡʵȽϼ򵥡ܶ˰½С
սƺҲôΪѻϣ˵
⣬˵ȵȡ˶֪ⶼǱȽĲԣҪת
⡣㷽ǸﷸҲ˿ٵԡأҪ
˵˶ߵʶȽϷǳʵֻһ
鲼ĺȻһЩͨЩΪʲôôĵʲô
ڴʹǣ

˵ӡ˺Ϊ˧󲻺ڹо
ǻԿΪ٣㿴ٵ·ӣƺʲô˶
㿴ЩˣûʲôԵģҵζСΪû
ԣ˵ԭȽձ飺ǲϲٵĶе˵ѡԴ٣
ôʲôģΪۡйԵúرȻҲ
϶޳ʮȷδۻܸߡڵй˻
ΪйȱĻһ滹Ҫ

˵ͨߣЩЩǿʼԺûӡģеǿʼ
ȽͺġϲƷϲǿԷֿģǾ
ʶЩƷ֮Щ˾Щó˺ٵ
֮еߵˡһƭӣңˣŲѣֱǶ
ҵ衣ûƻ룬ôţ˶־
ȥ˶ѡҪ˵ߺͺǵǾֻһ㣺
Ƕһݷʶʶ



3.      ʲô

ɾǻɡ϶ԡɾǷĳʵԣ϶ȷ
ϺʵԡɺͿ϶ĸҪȻǶɻȱΪ˻
ʵȷĶǱȻɡɣͲ֪ʲôģʲô
Ǽٵġκζֻоɡɵļ󣬲ʸڡ

ִѧĴʼ˵ѿͨһȫ滳ҵһվס
㣬ѧͿѧ֪ʶĴõġкܶٶġ
ܶɸоĶǼٵġ硶е4ѿΪҵѧͿ
ѧĿɿ㣬ϧһпܲʵĶڡһѧ˼¼
ƣȼٶһжǼٵģԼ塣ѿԼĴڶҪ
Իɣô֪ҲΣôȷĴڣǺ
׵ĻɣԼˣһʹḶ́Ҫһֹ¾ִš
㲻׵ػɣҲǸԿɿĶǱĶͶûݡ

ѿ֣һжǼٵģΪݡڻɡ
ǿɿģΪһڻɣ֤ʵڻɡͨ˼άĵ
Ժȷ˼άĿɿԣͨ˼ڡʵҲǡһɹ
ڡȰԼ֤ٿʼ֤Ψѧϵ
㿴κζҪáһ㡱һ£ûκζǲܱɵġ
ס˻ɣʸڡô㾭ס˻ɣץס
ɣֱӵءµءء֤ʵʵԡίߣת
⣬ؾᡣ

һЩƷǵ
ѵǲɵѵǲӦһֵµġֱӵķʽ
ɣ֤Լʵˣ𣿼ֱ
͸֮

жһ˵ĳ񣿾ǿǷзʶ
ʱ򣬷ʶΪʶʶǳ˵Ժɣ䱾
Ҳַʶ˵ܶԣ˵Ե֡㿴
ǲ񶨲ɵģֻܡ˵Ҳô죬뱣
һִ棬ﱣһȻΡðɣ㵱ȻȨһ֪
С£ҲͱٱԹƶȡƶȺ;ˡǶ
ǰˣ֮ذɡ

ķ˿ܻ˵ʹһֻɾĴڰ
Ʒͺˡͬ⣬Ʒ
ȷвƺƵݣһ̶ȵкͷ
񡣵ǺдģǾ͸޹ˡ

ƺз񶨵ζ練ѧУʦҳ
Ѽʽ˵̣棬ڷԼسѰ·ջ
׻ôѧͬȲۺЩǷ
ʵҿ϶ķ塣ǣǴѧܾͣ
ϡжԷ񶨵ķ񶨡ֻзܹᴩף
ΪһԭҲ˵ڷ״е֪ʶ֮󣬻ҪµĶ
Ѱµ֪ʶ㡣㲻ͣΪ´ˡںĺܶ
˿ΪļڽϷʶţƵĲˡǷǣҷǡ
дڽ֣϶Ǻдģڷ̸Ƶôû
һּڽͻǡǲдֵʱУ˵ʱûеģ
Ϭǿնġκζ˷ѣ
Ƿ֮أҪ񶨵ķ񶨣Ҫ¶Ȼô
ԲСҾ˻Ҫѧϰķ䣬еѧϰҪԼ
֪ʶȻһ⻰


4.      ƣйĻ˸

ʵôôãΪһ£٣˸ʡںܶ
˿治һʲô¡ģҲôذɡο
ƷЩĲͣƳķ񶨾ɺ
ƽһЩ˼أйм尡ô
ô˴ֵһζǲë֪֪˺
ĸĸҪ˶꣡B֧ߵ뷨뷨˲٣
лȨѧ߽ڼʲôġ˵֪ˣʵǺ˵ĵ
谭йɵĵط

һ֧йĸĸ͹ƽ塣εǣ
ǡǡйȻһԶδ߳СũʶӰʹͳĻӵĹң
һѸı͸µĹңɺֹǧ

Ͻᵽ˵ѿʽĻɡѿִѧѧĵˣôʹ
׻ɣΪ棬ΪҵһѧͿѧ֪ʶĿɿ㡣Ҫ
ظĻҪ˵һĻ
ҲңԲü¿ˡִĵѿ
ϣ˹£֪İɣϣѧļߺȻѧĴʼˣ
ڡζѧо˵

Ϊ֪ʶ֪̽ʶܱΪӦö֪̽ʶǻۡΪ֪
֪ˣȻѡȡʵҲ֪֪ʶ

߼ѧоĿʼֻıƷԼʹ˿ְʵĸ
Ｘõ֮󡣡

仰ݺܷḻ̡һʼΪֻдΪ֪ʶ
֪ʶ֪ʶ֪̽ʶжϣκ׵Ŀģֻ
Ϊ֪ʶңΪ˻֪ʶʲôȱˣȱ
ǮȱʲƸ֪ʶܻ֪ʶı
Ť֪ʶ˹Ļı棬ͶԭҪѧ
֪Ϊ֪ʶ֪ʶΪѧѧ֪ʶΪռĿꡣһ
澫񣬾ǳԽһĺʵļֵʵĿ͹ԭ
ľ

ΪܹչִȻѧΪʲô
չôӵȻѧһؿ͹۵ĶҲǣΪ֪ʶ
֪ʶ֪ʶĽĿƼܷϢ켼
＼ȽҲӰǣiPhoneõԡôûзչ
ӵִѧءѧĳֺͷչҪѧ񡣵йĿѧ
ǡѧǵһΪѧǴչѧʵǵģ
Ŀѧľ񣬾֪ʶؿ͹Ե澫
еĶйᱻ⣬ӹ׻һ滹ὲ


ϣ˵ĻһĻҲ˵һֿѧ
ҲϣҪ˵йĻǲġйĴͳע
ʵĹҵΪǿѧáйĻŨصʵԣ
ʵԳԽʵЧ룬ӽӹ̣֪ʶ
һ֪ʶκ͵ʵʵҪζѧʵ
̻ճ¹֮СΪйĻʵ͹й
˾һֶصĹ˸ֻҪܴﵽĿģά֣йʲô
˵˵˶Բйʲôԭ򶼿Թܣʲô涨
ͨʲôĶԽ

ѧã֪ʶĿģʵ棬Ѿÿй˵
ʶ֮Уķ쾡µֳйȿĿģ
վӣģѺõģôҲԵٵģҲҪ˵ɺõģ
кģжԵģٵҲԵģõҲҪ˵ɻġ㻹û
ȫߵڰ׵ĵزҲٻ߱Ϳ͹۵ʵڡ桢Ŀ
ȣʵ֪ʶӵڶȱѧĿѧ
оʵңÿ˵

ǰʵĿʵ֪ʶ֮ϣƴʵ޴
ûкʵûз͹ʵĶûжԼα
ôŰٻУαרҡѧ߷ĵʵǶǵĳͷ
йôٶʲôǼٵġиң׷һ
ңôôѣⶼȫȱܵ⣬ǵ»⣬
ⶼֻǱ󡣱Ļǲʹ˼ʹ̷˼
Ļ˸ǼٻֻԽԽࡣΪгˣ֮ĸ
ˣֹЭϸˣƷԽԽˡȥʲô
ٵģ˶ܺߣ˶ΪⲻǸ

˵עص½̻עĿ꣬ϸڶӴ֣
йĻɫҰ֮ΪơĻˣදƾǳ
£ȷܶйҵĿ֮ѧǵĹѧǽ
˵Ҳ˾Ҫĺʵµģ˵ĵ±۰
˵ûĺʵ£ͲǸˡ±εߣ۵ĸ߶ȡ
涨ԭ򣬵ҪģáֻҪ˶ѧϰǵ
½̻ѧʵı壬ʵ֡Ρκͷθö
ѽ

Ǻãϧֻȥãȥĵԭ棬
ʵϸڣҲȱ˿͹ԵЧ֧š͵ʲôأ
йϿȥܸУе£Ǻã
󣬺塣㿴йһͽҪ塣ʵ
أˡΪĵԭʵȱ͹ԵĹ涨֧ţʵʶ
ٵġйӣҪϺÿСΪʲôйô
̰󹤳̣ҪϺã涼



أαй˸Ҫص㡣и˼ҽޣ
˵йˡΪѧΪ󣬱ţ顱˵̨϶
£ȸУǵأڼı󸻹ŵ£
ֶΣŲһ顣ǶйĻһֱȽˡ
˰컹вйŶܹо
ʵô¡˵ı󸻹󲻿ԣ˽ûǲܴ
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ĻͲ˹»һܶԱȳĻĲ죬
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ҪԹһݣڳȶΪ죬ɼƫ֮ñΪһ
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ĴԶѡ

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ǮռͷԵʱ򣬡һǮֵˡ

ڵйĻĸ䣬Ҫ׷
йġĻйĻȦֻ棬
ոޡ

µ: ύ:2008-06-04 
20:55

µ

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ѭܶʼʮһĻƽ٣йĻ߶ٻͷ·
Ļ㻹߶õĲ·

1967굽1976ʮĻƽ֮󣬷ɽ֮ǽ
һµʱ1999굽2008һʮĻƽ֮󣬷봨


ڣǵ˸ýһֵͼɣɳŻĵĻʱˡ

ҺٴңªĻҪƵ

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Aaronsonʮ׼ںеӦ

ߣ

ͼӰרǵعƷѧʿΪӰ죬ռȻ
żҲְϷ

PNPǿоͰļѧ⡣ǰ죬
յDeolalikarʿ֤ѧʷϽһ̱
ѧһܶĿԼĿصоѡѧĵʦ
ŽɵءӣϿȣߴоǸϽĶ
S. AaronsonĲ֮ͣʱʡAaronson ˦һ֧Ʊ
Deolalikar˵õİ򽱽˽Ը׷Ӷʮ
http://www.scottaaronson.com/blog/?p=456

һ˰ǰעģвöֵĵԴڵ
ʱװƵƤһʶԴڴ·֮ǰ꣬
Aaronsonܽжѧ֤αʮ׼
http://www.scottaaronson.com/blog/?p=304

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ܳԩʮȫûᣬҲ󲻳˵ļƷ
ϲ̳ϺʮİԣһŶдͨ

µӢAaronsonԭǱ˵ĵúӦá

1. The authors dont use TeX.
TexѧдʽAaronsonĹƣTexѧ
Ͷ壬ٷ֮ʮǲƷͬд
ѧ֤Чİ취īǮߣϹҲ
Ƥǲҡ

2. The authors dont understand the question. 
νѧǲǳƭ֣Իڲ֣Ӧ
׶أӲÿʽϸʡԴߣ
˽ΪԽƭӻԴʢ⣬ûеѡ

3. The approach seems to yield something much stronger and maybe 
even false (but the authors never discuss that). 
պʽ編ȻʶʣƵıɷһߣֻҪû
ץסУʾû֤ͬ߼Ⱦ٣ҵֹƭӣ
ָƣӡDNAﷸиˡ

4. The approach conflicts with a known impossibility result (which 
the authors never mention). 
ΪǼ١ĳ˵Ĺ׾ٵͻ˱֤
ɣǲǴҹªţǼһﱾðƻסΧ
ǡһȴͨ׶ࡷǮ鱾˶񼣡ѧĿ
ڡѿ־ŷѧʷڳı༭
ͷĻӦԹذһposeʱǲǰõˡ

5. The authors themselves switch to weasel words by the end. 
Ԥ·ΪܵҪֻ֤溫ʵ
ˣΪŪ֣ƲƵĿܡ

6. The paper jumps into technicalities without presenting a new 
idea. 
ҹͨСժǣѧóĳ漼дģ
㿼˳ɼó˵̬ȥдһ
ĳƪϾʱǺһ˼漼ɣһ
ֻ360ĹʶС˵еֻǱ˵ġ

7. The paper doesnt build on (or in some cases even refer to) 
any previous work. 
ǵǰиӣֵس壬©ʣ쵼
εضëԡ˵ġȷ˼롡ǴӡģǴӡϡ
¡ġʱ̨µĻ϶Բѵ
ߴң¥ΡҲ¸ãԶ߽

8. The paper wastes lots of space on standard material.
ʮĳһдʵʮҽԺʮꡣ
£˵ùȥĽͣͲ˲䷳ظѧ
д鹹̸֮ˡ

9. The paper waxes poetic about practical consequences, deep 
philosophical implications, etc. 
ҪƲߵ򣬲Ҫ㵹ʹᵹ˶꣬Ҫ
Ե˵ķһֿ᷸շ޸ݵۣ֪֪
޳ǻˮıĿֻ֣ڶԾС
磬˽괯ǵ˸ף99ӽɽϺģ
⳵Ҫã֣ηģ

10. The techniques just seem too wimpy for the problem at hand. 
һAaronsonһ˵ڲʿٵ
˫ۣƽʻ˶ʮӣȻˡ³ҿ֣
ǰʽ¥Χı־ҲԸҿ϶Լй
˽ϡɽеͬѧǣǸСӣ
ˮҵЧʣݸһҳҳɾ࣬޸ĵĸ壬ֽܸ
ǮڶԾӣýҲ˵³ѸĹ⻷ҲԸҿ϶Լ
ڼ֤һƪС˵ԭڹۿһĻԳΪűĴϷ

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ķͳƷ뵹ĺ

ߣCheng9li

ڽͷֿźԵķͳƷ档Ͱš塱
˴ӵĴҵ׶Σ2011귲͸ҡ1984ʼԾ
һ֮ɾˡгؽѵѾؿ𣬸߹
׷ְ֮ʱȴûǱɴʵûͷĺ
ָЩԲеķ˿ҲܰϷһѡҲΪʲôһֱԿԾ
ϷϵǲϷΪԵʰɣ

Ҳһ겻Ҳһ졣׼
˺õһֵд죬νǰߣν
˾һֻȺߺȣӡ򷲿Ӵ򷲿͡Ӵ

Ҳ֪ģŹϺǰһˣ
ͷ濴ԶѾˣԼ˵Ѿˡ
ʹӴ˥ܣǵҰԴ۷磬Ҳ׸
뺫ĹϵҲ괺췲͵ĹʽΪгƷ㣡

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º԰

ߣ

¼ֵƺҪԲӦȥǲ̫ܵġ13
ˣھһ֮õӡͻȻҪӴҰʧûеǸ
û֤ȴ˼ôأԡ캫
һĵȼɵĵʱǶôźѣ˦2000
õ֤ݵĶ棬սЧһں֮ڣʮ
ЧľƣöֲľԱǰܸСȻս֮
ⲻȻȴĽ¡˭˵ľܵ
״ơ֪ľ¼ҡҪΪ㻶кã ˺ϸ
·һС˵շðҪ˵ϾпŻԴ
ȥϵ۵շĲʶʱóëǮһһǮĺͷ
Ȼ˵ģѹһС

ⲻҪըôΪ˿쵶ն顣˵Ժ浹ľͷǸ
ΰΣεľǷһа״ɣǵһδˣû
п죬ǿȻӢ۲еĺ׳˾ˣ
ǮҲǸ˹ܡѼˣ԰ӲҲó
ô֪ʲôɺͻʵۣԲǷ˴ȱΪ񾭲
ԺȥִǸԺָ壬ð亹Ͳεڹ
Ȩǰˡǵһθе顣ڹȨſתתȥ
ϷҪ֤֪ǲϲӵܣϲװװ
޼ⲻԲǵԸҲǹĸĹͬ档Ǵˣ
һδˡׯϵĹȨſڣˣ±׷ѯ13ǰǸŵ
౻ҴⲻһװƱ˵¡ﻹкһ
ӵĲֹȨӡ룬ΪҪװƣ˱ˣõ
ڣ˵ģҪжĻˡһ֮ûᣬ
ѡǳġֻ֪еǸ֣ܳû
֤ݾ͸ ֵˣȻȷһ֤
ȴԽԽǱָ¹ΪǸ㻹㣬ָ¹Ϊʼٸ
Ըһնة˹ӢɣԸϽʼܡԶû
˹ĲѧûϽʼܣ̫˷ѹԴˡڲߣ֪
ô13ϷŸոֲ߳ԶˣȻ㲻þգ
ûйȨĽ룬ֲϵǸҲӲ֤Ҵ
ôƱĿҪ̨ӵġһͿǲУ
ϲڷӡ֮еͨϲûзӡ
㡢Ըߵˡǲβ̬ģһġƻ
ؽȻУȻ䣬ʵ
ҪġǸ˵Ĺֻܱǹ⡣

д2012418

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ӳƱϵͳд׵

𾴵ķã

·ƱϵͳƱΪ뵽Լ
ϵĹƱ͹۲ԼΧ˴ڲϵƱ͸߼Ʊľ
̫ˣЩ̫ˡ

·ƱҪַʽ

һڹ涨ĻƱԤʱڲƱ12306ϣǵ58
еѷӳ˵Ļ18ӣʱ·Ų֪ڸʲô
12306ӳͷ˵Ʊѽѽ۾˵Ϲ
ϵƱʱֻʣӲƱˣӲƱһŶûˡҲţȥ
һ¡K7022/7020гױһгͬ
ͬȪ롢׸ڡľ˹վǷӲƱֵۣÿǵʮ
Ԥʱ10ӿʼԤʱʲôʱƱǷӲƱԱ
Ȫ롢׸վΪأһӲƱҲûС

Ʊǲӡ֤룬ڼС
ȥϲƱ˵ƱϼҲ֤룬
k7022/k7020гһЩȵ·ϦӲƱڵ
һʱ䱻˴ӡԼ׼Ӽ˵ġ

ƱӦȳ̺̣ѡƱԹΡ
ŵѣ12306վעһţÿֻһƱܷ
һ̣ȤעἸţʮΣм̡

ġϲ֤룬·ڲ˺Ʊ˻ᡣʵ
ϲƱʮּ򵥣ƱƱ˲黹ǲΪҲǲҲ

ʵ·ûףͨÿ򲻵Ʊϵ˺Ʊ
ƱѵЩ˶ɵӣ

12306Ͷߡ·ͶߣһöûУ˼
أͶѽ

Ҫʱṩ

ͨհ̫ˣ޹ƽȨԡ

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Ľѩ

ߣiheaing

Ľѩ

Ҷˡ滨Ʈ˲䡷󣬴񫣬þûôֱӵ
ܵ ѧѧݽһʦ飬ǳл㵣 顣

Уж²⣬ָ̣

һһֻͷ⻰ãÿһ
ѧſڣ ǷǳŲӵģ˵Ϊʲôһ 
ѧ еԭܸӣҲܼ򵥣Щ˵Щ
˵ϣ λ˼Щ˵һЩ ѹ
ͷʲôѹ ɲ⣬Ǹ˵жһµˡ

ǿȨһǿȨ֮£ǿȨ
ǿ Ȩ֮¡ָܷһ뷨ѧ

лл

滨Ʈ˲䡷
http://blog.sina.com.cn/s/blog_467a3a7f0100tudf.html

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֮Ѱ
 
ߣ
 
ͻȻ֣ӺµӢѰ

Ƕһ׿ȺһӡȨɣ
ޣҲܶԷжһֻ֣ԼһҲ
η壬֪ΪҲΪ֮ǧˣӵ鷢Ķ
žСɵ֮¡

ǶغͰÿһˣǷ䣬¥ۣ߼
˺ǵ޵С

ǴӲñ˵ĸ飬˷˿Ҳǵɹߣ
Ҳϧ

һҶɽдӢ۹µ
 
ãȻ
 ƽ
ݹµ 
 ɫ 
 ڲ 
вҵ· 
ԸľɽĪȸ 
Ҷ㲻ʶʱ 
˭Ҫ 
Ѱ·Թŭ 
;Ϊç¸ 
 
绽ڲ 
Ĩɱ 
ɽȸ 
ҶԳ 
ɽɫ 
ϸ׷Ϧ 
Ըһƫƫж 
Թδ 
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̾

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12306ӦָѹڽƱ

2012-04-23¾

գʿӽһƱߡԼ΢
ϣơϹƱϵͳ١

Ʊߡгƣ12306նZ20-
ƱΪ̣Ҫ̡ѳ30ιƱ
δԸ̡ɡŰѴ󲿷֣е̶Ԥ
ˡ

ǰգ12306ͷʾ϶ƱΪѡ񣬴ڶƱ硢绰Ʊ
һͬһƱ⣬ԤƱ

 
嶩Ʊ

·Ʊ硢绰Ʊƽ̨гǰ12쿪ͨվ۵
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