〔特急件20〕要科展了≧﹏≦ 要做實驗 幫幫忙溜-

Q1:想做”浮沉子”  要怎樣MAKE勒?

  請把詳細步驟和需要準備物品詳細列出。。。 

Q2有個實驗是把米粉放入某不明液體中 會瞬間變成黑色米粉 但在放入另一  液體中 米粉又會變成白色 這個實驗層在意本書”誰殺了大恐龍”一書中  曾經說到  那是怎ㄇ做ㄉ勒?

Q3水火箭的詳細步驟+準備物品 詳細更佳

2 Answers

Rating
  • 2 decades ago
    Favorite Answer

    Q1.GNU Make

    What Is GNU Make?

    Make is a tool which controls the generation of executables and other non-source files of a program from the program's source files.

    Make gets its knowledge of how to build your program from a file called the makefile, which lists each of the non-source files and how to compute it from other files. When you write a program, you should write a makefile for it, so that it is possible to use Make to build and install the program.

    Capabilities of Make

    Make enables the end user to build and install your package without knowing the details of how that is done -- because these details are recorded in the makefile that you supply.

    Make figures out automatically which files it needs to update, based on which source files have changed. It also automatically determines the proper order for updating files, in case one non-source file depends on another non-source file.

    As a result, if you change a few source files and then run Make, it does not need to recompile all of your program. It updates only those non-source files that depend directly or indirectly on the source files that you changed.

    Make is not limited to any particular language. For each non-source file in the program, the makefile specifies the shell commands to compute it. These shell commands can run a compiler to produce an object file, the linker to produce an executable, ar to update a library, or TeX or Makeinfo to format documentation.

    Make is not limited to building a package. You can also use Make to control installing or deinstalling a package, generate tags tables for it, or anything else you want to do often enough to make it worth while writing down how to do it.

    Make Rules and Targets

    A rule in the makefile tells Make how to execute a series of commands in order to build a target file from source files. It also specifies a list of dependencies of the target file. This list should include all files (whether source files or other targets) which are used as inputs to the commands in the rule.

    Here is what a simple rule looks like:

    target: dependencies ...

    commands

    ...

    When you run Make, you can specify particular targets to update; otherwise, Make updates the first target listed in the makefile. Of course, any other target files needed as input for generating these targets must be updated first.

    Make uses the makefile to figure out which target files ought to be brought up to date, and then determines which of them actually need to be updated. If a target file is newer than all of its dependencies, then it is already up to date, and it does not need to be regenerated. The other target files do need to be updated, but in the right order: each target file must be regenerated before it is used in regenerating other targets.

    Advantages of GNU Make

    GNU Make has many powerful features for use in makefiles, beyond what other Make versions have. It can also regenerate, use, and then delete intermediate files which need not be saved.

    GNU Make also has a few simple features that are very convenient. For example, the -o file option which says ``pretend that source file file has not changed, even though it has changed.'' This is extremely useful when you add a new macro to a header file. Most versions of Make will assume they must therefore recompile all the source files that use the header file; but GNU Make gives you a way to avoid the recompilation, in the case where you know your change to the header file does not require it.

    However, the most important difference between GNU Make and most versions of Make is that GNU Make is free software.

    About GNU Make

    Full documentation for GNU make is found in the Make manual, which is included in the GNU Make distribution. You can also buy printed copies of the Make manual from the Free Software Foundation; the money we raise goes to fund free software development.

    Alternatively you can browse the online documentation available at www.gnu.org/software/make/manual/make.html

    The GNU Make project page on Savannah contains information on the mailing lists, CVS access etc.

    You can download GNU Make from the GNU FTP site ftp.gnu.org or one of its mirrors. You can also obtain it by buying the GNU Source Code CD-ROM from the Free Software Foundation; this too helps fund free software development.

    You can report problems with GNU Make either through Savannah, or to the bug-make@gnu.org mailing list. You can ask for help writing makefiles or using GNU Make on the help-make@gnu.org mailing list.

    GNU Make has been ported to a great many systems. One that poses unique challenges is Microsoft DOS and Windows platforms; because of that there is a GNU Make mailing list dedicated specifically to users of those platforms: make-w32@gnu.org.

    All of the above mailing lists are open for posting by non-subscribers. However if you would like to subscribe, or view the archives of the mailing lists, visit the GNU Make mailing lists page on Savannah.

    GNU Make was written by Richard Stallman and Roland McGrath. It has been maintained and updated by Paul Smith since version 3.76 (1997).

    Makefiles And Conventions

    We have developed conventions for how to write Makefiles, which all GNU packages ought to follow. It is a good idea to follow these conventions in your program even if you don't intend it to be GNU software, so that users will be able to build your package just like many other packages, and will not need to learn anything special before doing so.

    These conventions are found in the chapter ``Makefile conventions'' (147 k characters) of the GNU Coding Standards (147 k characters).

    --------------------------------------------------------------------------------

    Return to GNU's home page.

    Please send FSF & GNU inquiries & questions to gnu@gnu.org. There are also other ways to contact the FSF.

    Please send comments on these web pages to webmasters@www.gnu.org, send other questions to gnu@gnu.org.

    Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA

    Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.

    Updated: $Date: 2004/10/18 21:00:09 $ $Author: araujo $

    --------------------------------------------------------------------------------

    網頁:http://www.gnu.org/software/make/make.html

    Q2.图片大全 | 流行音乐 | 疯狂舞曲 | 听鬼故事 | 黄 梅 戏 | 聊天贴图 | 笑话大全 | 经典百首 | 相声小品 | 网址大全 | 网络电台 | 网络电视

    搞笑动画 | 最酷动画 | 动漫搞笑 | 浪漫卡通 | QQ 动画 | flash动画 | 情歌专区 | 排行 100 | 男歌70首 | 女歌70首 | 在线MTV | 最新专辑

    网友翻唱 | 手机彩信 | QQ 表情 | 星座物语 | 周公解梦 | 爱情故事 | 军营歌曲 | 英文翻唱 | 歌曲下载 | 免费QQ | 心情故事 | 网友留言

    游戏 益智类 | 模拟类 | 记忆类 | 搞笑类 | 赌博类 | 测试类 | 运动类 | 冒险类 | 竟猜类 | 品牌类 | 射击类 | 飙车类 | 动作类 | 其他类

    最新专辑 华人男歌 华人女歌 华人组合 影视合辑 日韩男歌 日韩女歌 日韩乐队 欧美歌手 闽南台语 合辑其它 DJ摇滚

    在线MTV首页 >> 华人男歌MTV >> 华人女歌MTV >> 华人组合MTV >> 日本韩国MTV >> 欧美流行MTV >> 相声小品MTV >>

    免费电影 | 动作片 | 喜剧片 | 爱情片 | 恐怖片 | 科幻片 | 战争片 | 惊险片 | 动画片 | 连续剧 | 故事片 | 其它片 视听帮助说明

    图片铃声 摩托罗拉 诺基亚 三星 索尼 爱立信 NEC 西门子 松下 联想 波导 东信 康佳 阿尔卡特 三菱 夏普 厦新 大唐 CECT 飞利浦 熊猫

    音乐歌曲快速搜索: 歌词 全部音乐 mp3 rm ram wma flash

    網頁:http://www.8812345.com/

    Q3.水火箭製作

    請打開喇叭有音樂哦

     

    火箭的原理

    最早的火箭觀念是由我們中國人所發明的。也就是

    說火箭的歷史是由中國人開始記錄的。

    火箭是利用牛頓第三運動定律作用力與反作用力來向前

    推進的飛行物體。

    火箭由於燃燒產生高壓高溫氣體,而根據高壓氣體流往低

    壓氣體的原理,將火箭尾端的噴嘴作為唯一的氣體出口,

    所以由噴嘴衝出的高速高壓氣體由於牛頓第三運動定律的

    作用,給火箭一個反作用力使的火箭得以升空飛行,向前

    衝。

    水火箭的原理

    水火箭顧名思義是以水作為媒介,將高壓氣體灌入水火箭

    中,根據高壓流往低壓的原理。將噴嘴打開,高壓氣體迅

    速的將水推出噴嘴,根據牛頓第三運動定律的作用,給水

    火箭一個反作用力使的水火箭向前衝。

    水火箭的材料

    項目

    材料

    說明

    1 寶特瓶1250CC二個 水火箭本體

    2 強力膠、絕緣膠帶(電火布)、雙面膠 連接火箭本體

    3 美工刀、 剪刀、尺、切割墊  

    4 噴嘴、打氣筒(附壓力表)、發射架  

    製作流程

     

    1、準備二個1250ccc或2000

    cc(大小相同)的寶特瓶

     

     

    2、將其中一個寶特瓶分割成

    三部分;將瓶口及中段留

     

     

    3、將留下的瓶口及中段,分

    別套上另一寶特瓶的底部

    及瓶口,記的塗上黏著劑

    並用絕緣膠帶固定

    ps:請保持火箭的箭身是一

    直線

     

     

    4、利用厚透明膠片或珍珠版

    製作尾翼四片

    並將其平均分配固定在火

    箭的後半部

    ps:塗上黏著劑並用膠帶確

    實固定。未平均分配或

    未固定會影響火箭行進

    的方向

     

     

    5、套上火箭頭及噴嘴,準備

    展翅高飛了

     

    6、在發射架上準備發射

    網頁:http://krjh200.krjh.tcc.edu.tw/~wgd/waterrocket/wa...

    Source(s): 網路
  • 2 decades ago

    如何完成一件好的應用科學科 科展作品:

    科展中的應用科學科是學生統合其所學各學科知識、學問,進而提出創新或實際應用的科學,其範圍廣泛幾乎可以涵蓋所有學科,舉凡:電腦科技、環保、土木、化工、生物科技、物理、生活現象等等,因此,在從事應用科學科的專題研究時,研究者應特別注意其研究結果是否具有實際應用或創新(改良)學術學習的價值。

    因為應用科學的範圍很廣,因此和其他類科選定題目的步驟不太相同,應用科學科訂定研究主題的步驟是先選定想要研究的領域再確定主題;根據自己的能力(例如:知識背景、研究能力、研究方法)、興趣,並參考當下所有可用的資源(例如:設備、資料、老師、專家學者)來選定研究主題。好的開始是成功的一半,依據上述條件選定研究主題是整個專題研究能否成功的第一步,尋找科展題目的途徑與方法簡述如下:

    1. 網路資源:e世代的學生要培養能夠充分運用網路資源的能力,網路上的專業網站、討論區等等,都可能引發靈感找到題目,甚至為整個科展的後續工作提供參考資源。

    2. 同儕討論:尋找志同道合的同學,採取腦力激盪的方式,往往有出人意料之外的成果;如果是一個與同學合作的科展,腦力激盪的討論方式除了可以因為他人的創意引發其他構想,甚至會因為這樣的討論而使得每一個參予的夥伴有一體的共識。

    3. 從平凡中思考不平凡處:生活現象是應用科展的領域之一,從日常生活或社會現象的報導中去發現問題點,提出改善或解決該問題的研究主題。(例如:85年國際科展加拿大正選:模擬交通─龔律全;86年 碰撞模擬實驗與撞球遊戲─楊卓漢)

    4. 科學性影片、書籍、雜誌:科學性的影片、書籍、雜誌,可以使觀賞者學得如何訂定研究題目與研究方法;有線電視的普遍使得科學性影片不再遙不可及,一本好的書或雜誌也往往引發讀者啟發性的思考。(例如:88年國際科展Intel科學獎:模擬生物─宋易;39屆全國科展應用科學類佳作:抽芽遊戲─林虹佑;40屆全國科展應用科學類第一名:無人載具之遠距無線遙控、衛星定控制暨自動導航─朱承啟;90年國際科展候補:視覺動態物件導向之視覺自動導向自走車─朱承啟)

    5. 文獻:從瀏覽文獻中尋找題目,但是要注意應用科科展的作品一定要隨著時代的進步而有創新的價值。

    題目訂好以後接著是實驗,關於實驗的進行─台大電機系詹國禎教授有這樣的見解:「實驗務必要符合細心的觀察及測量,做一系統性的探討、收集充分的數據,並繪製顯示優良的圖表與單一變因的選擇及變化,符合嚴謹的邏輯思考模式,進行科學的研究步驟。」

    用心製作完成的作品,接著就要接受科展評審老師的評審,應用科學科展的“評審”準則要點簡述如下:

    1. 科展主題是否符合創新(或改良)且具有科學教育學習或應用的價值。

    2. 作品的學理與實驗是否符合科學態度與科學方法。

    3. 注意研究報告的完整性與寫作技巧,看板壁報的製作要配置得當且能簡潔而完整的呈現研究內容。

    4. 作者對於作品的說明與答覆要掌握要點,敘述或應答要流暢。

    5. 作者能確實執行所研究的作品,不可假手他人。

    6. 遵守舉辦單位關於科展的一切規定。

    總結上述,一件“具有一個創新或實際應用的主題,以符合科學態度及科學方法製作完成,並能以論文內容、壁報看板顯示及作者解說來呈現作品的完整性”就是一件好的應用科學科科展作品。我們國家每年舉辦全國科展與國際科展的目的是「專為培養中小學生獨立思考、創造及研究能力,激發學生研究科學的興趣,倡導學生從事科學研究風氣,藉以提升我國科學教育水準」─(科學館)。因此科展的進行應以學生本身為主體,專題研究者在從事研究過程與參展過程中的種種經歷都是一種難得的學習,希望不要以得獎為唯一目的。

Still have questions? Get your answers by asking now.