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環保意識高漲,溫室效應日益惡化,可以調節室內溫度和光線的窗簾扮演著相當重要的角色。不管是每日迎接曙光被太陽曬醒或者白天不在家時一開門就受到一股熱氣迎面而來造成悶熱的情況,同時也是為了時常待在家裡的老人設計,他們白天總是很喜歡坐在家中吹涼風,有了此項設計後即使不從椅子上站起來也能夠讓窗簾打開享受春風的薰陶。於是我利用光敏電阻當做判斷繼電器開啟和關閉窗簾的裝置,當太陽照射時,馬達開始轉動,藉著減速裝置,最後成功的閤上窗簾;當天暗時,另一個光敏電阻使繼電器閉合,順利達到窗廉自動開啟之目的。進而減少耗電量與用電造成的CO2排放。
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有一次我在趣味數學中發現一顆翻硬幣的題目,我發現很有趣又簡單,於是我花了幾小時將硬幣由正面翻到反面,並做好記錄,從記錄中居然可以發現一些規律性,而且硬幣數愈多,排法也變化愈多,於是我開始做記錄找資料,研究這千變萬化而又有趣的問題。
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The human eyes can adjust automatically the color of object under different illuminants. But digital camera does not have such mechanism, must join the white balance to simulate the color constancy of human eyes. There are many existing white balance methods. They can be categorized into two types. The first type utilizes the widespread assumption on the dealing natural scenery, which has the advantage of simplicity. Another type explores knowledge of the semantic content, which has the advantage of accuracy. In this study we modify and enhance the widespread assumption methods that can adopt the advantage of the simplicity and accuracy. Our proposed method is structured in two main parts: a color cast detector and a color cast remover. The detector first analyzes the color distribution of the image with simple statistical tools to determine whether or not the image has color cast. The remover, a modified and enhanced version of the widespread assumption methods ( gray world and max RGB ), is then applied on the color cast image. From the experiment results, it demonstrates the efficacy and performance of the proposed method.人類的視覺能夠自動修正因光線變化而改變的物體顏色,但是數位取像設備的感光元件卻不具有這樣的功能,必須加入白平衡的功能,才可模擬人眼維持色彩恆常的特性。現有的白平衡演算法可分為兩大類型,第一類型為廣泛假設型,具有運算速度快、與取像設備無關的特性,但是平均誤差會較大;另一類型為預知特性型,其特徵為準確性較高,但是運算較速度較慢、建立色彩特性資訊時所需的成本較高,本篇研究針對廣泛假設型的演算法做些修正與增強,使其具有較小的平均誤差以獲得較佳色彩品質的影像。我們將影像的色偏校正分為色偏偵測與色偏移除等兩個階段來進行,由於僅有被偵測出有色偏的影像才需要進行色偏的移除,所以可以避開將無色偏或固有色偏的影像做錯誤的修正,由實驗的結果看來,我們的方法確實有效,除了具有運算速度快、與取像設備無關的優點外,其色偏校正能力也較現有的方法好,使得影像色彩更能與人眼所見相近。
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科展作品檢索
The Main Features Of Climate Change On The South-West Of Yakutia In The Last 100 Years
1. Purpose of the research to detect the dynamics of the change of moisture regime on the territories of Olekminsk area for the past 100 years.\r 2. Procedures for analysis we used as materials of observations on the testing areas of school of ecological control of our Center, so and of the meteorological station Jikimda situated on the territories of Olekminsk reserve, as literary sources. Time-series analysis was conducted as to following scheme: for period 1901 -1914, 1949-1958 and for period 1996 -2009.\r 3. Data The changes of the temperature of air and sediments for the period of instrumental observations from 1901 to 2009 were analyzed\r 4. Conclusions Climate is characterized with many parameters coming in radiation, the heat and aqueous balances of territory. The most simple and widely measured parameters are the temperature of air and the quantity of atmospheric condensation. Carried out researches and the analysis of received results let us make tentative conclusions:\r 1. Average amount of precipitation increased on 41% (with 229 mm during the period 1901-1914 till 390 mm for period 1998 - 2006)\r 2. The decrease of firm precipitation in cold period and increasing of fluid precipitation in warm period are noticed for 100 years.\r 3. The gross amount of days with precipitation grows from 135 days (period 1901 - 1914) till 160 days (for period 1996 - 2006). For period 1901 -1914 a month with the greatest quantity of days with precipitation is January. The middle quantity of days with precipitation in it composes 16 days. A month with the least quantity of days with precipitation is July. The middle quantity of days with precipitation in it composes 8 days for period 1996 -2006. We should note that though increasing of the quantity of days with precipitation is on the cold period of year, increasing of the value of precipitation arises at expense of warm months. This reflects well the annual motion of the force of precipitation as to studied periods, the force of precipitation grows, in the first case achieving maximum in August, into second - in July. The maximal significances of the force of the precipitation of second period exceed of such the first period almost in two times.\r 4. The disposition of meteorological phenomena shows the change of climate to moistness. There are more days with fog, snow-storm, the quantity of days with precipitation increases from more 1mm, so more and 5 mm and it’s noticed that the quantity of days at a speed of wind more 10 and 15m/sec increases.\r 5. The change of the precipitation amount, especially in warm period affects the level and the expense of water in the Lena River. Analyzing as to decades the statistics on stratum of flow as to stratum flow since 1930 till 2006 can be noted tendency increasing of stratum flow from 132.8 mm in 1930 till 289 mm in 2006. The significance of the annualized expense of water with 6370 in 1999 till 8710 m/sec in 2006 enlarge, the annualized level of water changes from 282 till 376 cm. It is according. The area of the movement of the significances of the indicators changes to their increasing in the course of the year for the last 10 years. Averaging their significance exceed the norm of 18%.\r In conclusion we want to note that global change of climate actually touches all of us and already has significant influence on natural environment and the life of people. In simple words warming - the increase of temperature - for the many areas of our north country might become a favorable change of the conditions of life. But the trouble is that the change of climate is much more complex process, and one of its main manifestations is the augmentation of the instability of climatic conditions, changes of flora and fauna, increasing of infectious diseases. This influences badly on natural ecosystems and complicates the life of people. Besides, too quick warming does not let natural ecosystems adapt themselves, and they can be destroyed. And at least now we shouldn’t wait doing nothing, it is necessary to take all efforts to try to reduce climate change effect.
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喔喔!豆豆先生中毒了?!—塑膠水對豆類發芽的影響
本研究旨在瞭解塑膠製品製成的水溶液對豆類發芽的影響,透過問卷調查與三個批次實驗實際栽種,獲得結果如下: 1. 環境荷爾蒙對植物生長的影響和動物一樣,都是緩慢而長期,由內而外改變生物的生長情況,而非立即性的造成死亡。 2. 由塑膠水的製程到水質檢測,確定塑膠製品部分成分會溶於水中;使用塑膠水種植的豆類,其發芽情況不同於使用常溫水種植的豆類。 3. 小學生對環境荷爾蒙認知有嚴重偏差,應讓其有正確的認知與行為。研究發現塑膠製品容易因高溫水而溶出物質,其水溶液確實會影響種子發芽,藉此希望人們減少塑膠製品的使用頻率,以降低環境荷爾蒙的吸收。
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由人類活動造成的溫室效應可能導致地球溫度升高,聖嬰現象加劇等現象與災害,本文利用個氣候中心發展出的模式,推估台灣和東亞地區未來氣候變遷的情況,我們發現當大氣中的二氧化碳濃度增加為現在的1.9倍時,台灣地區的年平均溫度將升高0.85-2.50度C而東亞地區將會升高1.46-4.07度C,在同條件下個模式的平均推估量也顯示,台灣地區將每天增加0.10公厘的降水,而東亞地區每天將增加0.08公哩,我們希望這個研究結果可以做為其他相關研究的基礎,使大家提早因應未來氣候變遷所可能引發的種種變化;Greenhouse effect, incurred mainly by human activities may result in lots of phenomenon and damages such as the increasing of the world's average temperature and he aggravation f the "ElNino" effect. In this research, we simulate future metrological values by employing several simulation modes developed by different climate centers and predict future climate changes in Taiwan and East Asia area. We found that when the concentration of carbon dioxide exceeds 1.9 times than current value, the estimated range of the increased year-average temperature are0.85-2.5℃ and 1.46-4.07℃ for Taiwan and East Asia, respectively. Under the same condition, the ensemble mean reveals that the precipitation raises will be 0.1 and 0.08mm per day, for Taiwan and East Asia respectively. We hope our work can be the foundation of other related researches, and all the researches together can help for coping with possible damages caused by future climate changes.
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本作品主要是探討「建築物的底面形狀和耐震程度的關係」及「建築物輔助支撐和耐震程度的關係」,最後進而由學生自發性的提出問題來討論,最難得的是小組的成員主動提出88年729大停電、921地震,都是因為高壓電塔倒塌,造成全台大停電,而要求要拿出小組經過討論後,認為最耐震的建築及支撐和高壓電塔的支撐一決雌雄,在實驗的過程中,我們發現建築物的底面形狀確實和耐震的程度有關,我們推論豐田大樓(底面L形)倒塌的原因,發現921大地震的搖動方向為東西向,而豐田大樓在這個方向卻沒有對稱軸,而產生較大的扭力(由附件4、5頁線形圖)可看出除左右的振幅,其前後的晃動也很嚴重,而文化廣場(底面長方形但接近於正方形)在921大地震的搖動方向為東西向時,它的南北方向有一條對稱軸,這是否就是同為12樓公寓建築,豐田大樓梁柱嚴重受損,被判定全倒,而隔壁的文化廣場卻掉幾塊磁磚的原因。實驗過程我們也發現,在建築物加上輔助支撐,可以大幅度改善建築物的耐震性,其中不同的輔助支撐,改善的程度也不相同,其中又以X形輔助支撐,在大地震來臨時,最能改善建築物本身的耐震性,甚至最後我們小組把它和高壓電塔支撐做個震動幅度比較,我們也發現,X形支撐優於高壓電塔支撐,這是本小組引以為傲的事,更重的是X形支撐,所使用的材料比高壓電塔支撐,幾乎節省一半。
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利用福爾摩沙衛星三號觀測北半球平流層急劇增溫現象
近年來,造成中低緯區溫度下降的北極震盪逐漸受到科學家的重視。一般我們說的「北極震盪」,指的是北半球高緯區的氣壓變動關係:極地渦漩減弱,造成原本聚集在極圈的冷空氣向中低緯區擴散,而使中、低緯度氣溫驟降;但就溫度層面而言,學術上認為這和平流層急劇增溫有關。 本研究分析福衛三號自西元2006年始的北半球大氣溫度資料發現:震盪現象最明顯出現在冬末春初;高度方面,低空較不易觀察震盪現象,而30公里以上的高空受影響的程度略為類似;緯度方面,北緯40度以南的地區受SSW影響而降溫,其幅度較小,而北緯40度以北升溫,且幅度隨緯度增加而漸大。 另外將西元2006~2010四年資料比較後,發現西元2009年為近四年來最高峰,且SSW有類似北極震盪部份週期的變化,故福衛三號氣溫數據資料在未來極有可能成為新興的氣候變化觀測依據。
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一天爸爸帶我們一家人到陽明山去玩,還照了許多相,又用三腳架為全家人照相。我忽然想到三腳架為什麼不像椅子一樣用四支腳呢?回學校後就將這個疑問,請教老師。
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科展作品檢索
中華民國第三十九屆中小學科學展覽-地球科學科評語
今年地球科學參展共三十六件(含泛太平洋地區國家一件)科展作品均能利用鄉土題材作深入之探討如「土石流現象」、「山坡地水土保持之研究〕、「台灣地區降水的氣候特徵」、「聖嬰現象與台灣地區之氣候變化」、「嘉南大地震災害之探討」、「恆春半島之化石研究」、「台灣地區天氣變化特性一颱風寒流與梅雨」此外高中組亦有作品探討「控制閃電分佈的因素」,水準甚佳,很多作品均能表現團隊精神分工合作,今年連江縣連江國中亦參展是值得欣慰的事情。 甚多作者均能利用網路收集資料事半功倍。 部份作品教師參與成份偏高值得改進,部份作品內容參考文獻似乎超出學生之程度而學生對此等文獻亦不了解。評審委員認為作品成果應與學生之程度符合並以此作為評審之主要依據,同學們對作品之解說均十分清楚,表達能力均佳,尤其高小的作者口齒伶俐令人讚賞,地球科學作品之平均水準較往年均有進步,希望今後能有更多的同學參與科展活動使同學們對於我們生活的地球有更深入的了解。
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本研究成功解析以綠光雷射經過單狹縫產生的繞射光強度分布,有別於一般高中使用之單狹縫繞射實驗教具組,僅能測出光屏上亮暗紋的間距,且可分析之明暗帶數目甚少,進一步思考,這些量測結果皆不為球面波光分佈情形,所以勢必產生誤差。本自製機構加入巧思,建立旋轉平面分析繞射光強度,得到球面波的解,並透過對數放大器電路進行數據處理,可提升觀察解析度至第40亮帶。同時使用的材料皆成本低廉。應用上,可量測未知狹縫之寬度。另有鑑於市售之儀器價格昂貴,若此機構可以透過推廣量產,將提升高中課程對於單狹縫繞射進階的認識。
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