【正文】 s life for good. A Scotch halfbreed took charge of him and his mates, and in pany with a dozen other dogteams he started back over the weary trail to Dawson. It was no light running now, nor record time, but heavy toil each day, with a heavy load behind。 and the celerity with which Buck broke them in took away Francois39。s heels, and who never put an ounce more of his weight against the breastband than he was pelled to do, was swiftly and repeatedly shaken for loafing。s traces and put him back in his old place. The team stood harnessed to the sled in an unbroken line, ready for the trail. There was no place for Buck save at the front. Once more Francois called, and once more Buck laughed and kept away. Throw down de club, Perrault manded. Francois plied, whereupon Buck trotted in, laughing triumphantly, and swung around into position at the head of the team. His traces were fastened, the sled broken out, and with both men running they dashed out on to the river trail. Highly as the dogdriver had forevalued Buck, with his two devils, he found, while the day was yet young, th at he had undervalued. At a bound Buck took up the duties of leadership。 and while he circled he watched the club so as to dodge it if thrown by Francois, for he was bee wise in the way of clubs. The driver went about his work, and he called to Buck when he was ready to put him in his old place in front of Dave. Buck retreated two or three steps. Francois followed him up, whereupon he again retreated. After some time of this, Francois threw down the club, thinking that Buck feared a thrashing. But Buck was in open revolt. He wanted, not to escape a clubbing, but to have the leadership. It was his by right. He had earned it, and he would not be content with less. Perrault took a hand. Between them they ran him about for the better part of an hour. They threw clubs at him. He dodged. They cursed him, and his fathers and mothers before him, and all his seed to e after him down to the remotest generation, and every hair on his body and drop of blood in his veins。way, Hook! he cried, but Buck refused to budge. He took Buck by the scruff of the neck, and though the dog growled threateningly, dragged him to one side and replaced Solleks. The old dog did not like it, and showed plainly that he was afraid of Buck. Francois was obdurate, but when he turned his back, Buck again displaced Solleks, who was not at all unwilling to go. Francois was angry. Now, by Gar, I fix you! he cried, ing back with a heavy club in his hand. Buck remembered the man in the red sweater, and retreated slowly。s answer. And now we make good time. No more Spitz, no more trouble, sure. While Perrault packed the camp outfit and loaded the sled, the dogdriver proceeded to harness the dogs. Buck trotted up to the place Spitz would have occupied as leader。s speech next morning when he discovered Spitz missing and Buck covered with wounds. He drew him to the fire and by its light pointed them out. Dat Spitz fight like hell, said Perrault, as he surveyed the gaping rips and cuts. An39。 除非另有科研合同和其他法律文書的制約，本論文的科研成果屬于成都信息程學(xué)院。 （ 4）學(xué)?？稍试S學(xué)位論文被查閱或借閱。 （ 2）學(xué)?？梢圆捎糜坝?、縮印或其他復(fù)制方式保存學(xué)位論文。除非另有說明，本文的工作是原始性工作。 作者簡介： 姓 名： 梁 科 性別： 男 出生年月： 19840409 民族： 漢 Email: 聲 明 本論文的工作是 2020 年 2 月至 2020 年 6 月在成都信息工程學(xué)院網(wǎng)絡(luò)工程系完成的。 同時還要感謝那些在畢業(yè)設(shè)計過程中向我伸出過援助之手的老師、同學(xué)以及為我提供參考資料的單位和個人。 致 謝 謹(jǐn)此向在本畢業(yè)設(shè)計過程中給予我無私幫助與指導(dǎo)的易勇老師和張仕斌老師表示最真誠的謝意，易老師和張老師謙誠的態(tài)度，和藹的為人，深深的感動了我們每一個由他們所指導(dǎo)的學(xué)生。 [5] 梁嘉超． ASP 后臺數(shù)據(jù)庫網(wǎng)站制作實例經(jīng)典 [M]．北京：冶金工業(yè)出版社， 。 [3] 陳俊榮等． Asp 與網(wǎng)絡(luò)數(shù)據(jù)庫技術(shù) [M]．北京 :中國鐵道出版社， 。 參考文獻(xiàn) [1] 吳興興等．網(wǎng)絡(luò)數(shù)據(jù)庫應(yīng)用實例 [M]．北京 :人民郵電出版社， 。完成這個畢業(yè)設(shè)計過后有一種無法言表的成就感。 通過對精品課程網(wǎng)站的設(shè)計與開發(fā)作者收獲了頗多，首先基本上掌握了 ASP 開發(fā)語言的應(yīng)用，其次對數(shù)據(jù)庫的操作也有了比以前更大的進(jìn)步。此精品課程網(wǎng)站完成了一個精品課程網(wǎng)站常用的基本功能，它運(yùn)行穩(wěn)定，資源占用率少，對運(yùn)行的它系統(tǒng)配置要求較低等等，它完成了系統(tǒng)要求的主要功能，運(yùn)行速度快，這些都是它的優(yōu)點。 結(jié) 論 本畢業(yè)設(shè)計實現(xiàn)了精品課程網(wǎng)站所需的基本功能，系統(tǒng)登錄模塊完成用戶注冊功能、用戶登錄、權(quán)限控制、退出系統(tǒng)登錄、找回丟失的密碼、更改用戶個人信息等功能；在線考試模塊完成了身份驗證，教師出題，更新試題，刪除試題、更新試題答案及內(nèi)容，設(shè)定考試時間，查看學(xué)生考試成績等功能；學(xué)生考試模塊主要完成了學(xué)生在線考試，以及查看考試成績的功能；在 線交流模塊主要完成用戶留言、查看用戶留言、管理員登錄功能、管理員回復(fù)留言功能、管理員屏蔽留言功能、管理員恢復(fù)留言功能、管理員刪除留言功能等；在線視頻功能完成了用戶視頻觀看功能，此外還實現(xiàn)了公告發(fā)布的功能。 分析 經(jīng)過充分的測試可以得到如下分析結(jié)果：首先本設(shè)計具有運(yùn)行速度快、系統(tǒng)運(yùn)行時穩(wěn)定、系統(tǒng)占用資源少、對系統(tǒng)配置要求低、可移置性好等優(yōu)點。以這一組數(shù)據(jù)進(jìn)行找回密碼等功能后發(fā)現(xiàn)所有功能都能正常實現(xiàn)，精品課程網(wǎng)站運(yùn)行正常。進(jìn)入在線視頻功能后能夠通過輸入 的電影名正常在線觀看。當(dāng)以管理員身份進(jìn)行登錄后，聊天記錄可以被刪除、屏蔽、備份，恢復(fù)，等功能。當(dāng)更加數(shù)據(jù)庫中李繼紅的身份為教師后， 能夠正常添加，刪除，修改試題，在線考試功能正常。并取得其它操作的權(quán)限。 ,sql,conn,1,1 if and then embedsrc=%=rs(url)%type=audio/xpnrealaudioplugincontrols=ImageWindow,ControlPanel,StatusBarborder=0width=57%height=491 autostart=1loop=0歡迎收看再線視頻 /embed//內(nèi)嵌播放器 % 在線視頻功能實現(xiàn)的效果如圖 15 所示。Request(filmname)amp。 % set sql=select url from film where filmname=39。這個功能設(shè)計的主要目的在于把聲，光，電，等媒介應(yīng)用到教學(xué)當(dāng)中去，教師把自己制作的教學(xué)視頻發(fā)給管理員，管理員將其上加入到數(shù)據(jù)庫，用戶再通過客戶端進(jìn)行查看。與傳統(tǒng)的播放方式不同，流媒體在播放前并不下載整個文件，只將部分內(nèi)容緩存，使流媒體數(shù)據(jù)流邊傳送 邊播放，這樣就節(jié)省了下載等待時間和存儲空間。 流媒體技術(shù)簡介 流媒體 (Streaming Media)指在數(shù)據(jù)網(wǎng)絡(luò)上按時間先后次序傳輸和播放的連續(xù)音 /視頻數(shù)據(jù)流。流媒體技術(shù)利用聲、光、電等媒介促使用 戶更好的接受知識，其克服了傳統(tǒng)教學(xué)方式所帶有的弊病，使得教學(xué)變的更加的生動、有趣并且適當(dāng)?shù)臅r候還可以寓教于樂。查看原數(shù)據(jù)庫是否存在 set fs=nothing 然后才有機(jī)會完成恢復(fù)操作，其實現(xiàn)的效果如圖 13 及圖 14 所示： 圖 13 留言備份 圖 14 留言恢復(fù) 以上為在線交流的功能簡介。BFdE=(Bfile) BFdE=(Bfolder)39。有時候還得想辦法恢復(fù)這些留言 ,如何來完成這個恢復(fù)操作呢？首先必須要備份、當(dāng)須要恢復(fù)留言的時候就把這個備份中的文件讀出來，再顯示出來就可以了。 navigate()/script) 這樣，一些不應(yīng)該發(fā)表的留言就被系統(tǒng)管理員給禁止了。下面的代碼段被用來實現(xiàn)這個操作。39。amp。39。amp。這里也是把管理員的相關(guān)信息傳到后臺去，讓后臺去處理。如果無法限制非管理員用戶的權(quán)限，那么誰都可以把別人的留言給更改或刪 除，從而造成一些人的留言被惡意的更改或刪除。管理員具有最大的權(quán)限，管理員可以刪除留言、備份以及恢復(fù)留言等功能，下面就來介紹一下這些功能是如何實現(xiàn)的。因為管理員功能要完成更多的操作，擁有更高的權(quán)限，而其它用戶功能非常簡單，所以需要對管理員身份進(jìn)行驗證。頁面效果如圖 11 所示。 下面將看到的是在線交流功能的界面。它不像以 T 開頭的好些文件那樣。因為管理員要刪除那些不適合發(fā)表的言論，比如帶有人身攻擊性質(zhì)的留言。用戶只要點擊進(jìn)出就行，可以隨便輸入你認(rèn)為喜歡的名字，不會怕事后會 被人指責(zé)等（這是很多的人都有的顧慮）。大家不以實名方式發(fā)言，這樣使得學(xué)生沒有后顧之憂、能夠暢所欲言，因此精品課程網(wǎng)站選擇留言板作為在線交流的平臺。當(dāng)學(xué)生遇到問題的時候，可以通過這個平臺把自己遇到的問題及困難提交上去讓大家討論，同時如果別的同學(xué)也有相同的疑問，就會主動去關(guān)注大家對這個問題的討論。更改數(shù)據(jù)庫中試題的界面效果如圖 10 所示。對于教師功能就介紹到些 。