20 research outputs found

    地理統計應用於臺北市山坡地雨量站網評估與調整

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    土石流災害發生受到降雨的強度和空間變異性影響。因此,了解降雨的空間變異性特性是土石流減災的先決條件。在本研究中,針對不同降雨類型使用地理統計進行降雨空間變異特性分析,分別對夏季對流雨、颱風、梅雨和冬季鋒面雨進行分析,選取較適合的降雨空間變異特性。結果發現夏季對流雨的影響範圍最小 (約55 公里),代表其空間變異大,而其他三種降雨類型影響範圍較大 (約69 公里) 則空間分布較均勻。因此,在研究中建議以夏季對流雨的空間變異特性,進行台北市雨量站網的評估。The intensity and spatial variability of storm rainfalls play an essential role in occurrences of debris flows. Thus, understanding and characterizing the spatial variability of storm rainfalls is a prerequisite for debris flows mitigation. In this study, we investigate the spatial variabilities of rainfalls induced by different storm types using geostatistics. Summer convective storms are found to exhibit higher degree of rainfall spatial variability than typhoons, Mei-Yu and winter frontal systems. The semi-variogram of hourly rainfalls of convective storms was then used to assist in evaluation and augmentation of an existing raingauge network in Taipei

    角色動畫中表情呈現與 角色個性之關係研究

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    [[abstract]]在角色動畫的領域裡,動畫師有如電影中的演員。進入繪製動畫的階 段前,必須熟知角色個性、揣摩角色動機後為其設計動作,描繪完整,使角色 的表演能夠融入故事中。本研究的目標聚焦在:個性如何影響表情變化。從文 獻資料蒐集開始,學習角色動畫領域中拆解動作的方法運用在觀察、分析的過 程,加上查閱有關人臉表情的分類方式,在選定動畫影片材料後進行歸納分 析。期望能夠在擁有普遍性的共同表情特徵中,找出每個不同的動畫角色間是 否存在些微個體差異,與角色個性是否相關

    The Influence of Natural Disturbances on Landscape Change in Basianshan National Forest Recreation Area

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    Basianshan National Forest Recreation Area was established in 1978. The recreation area was famous for its forestry history and plentiful forest resources. Basianshan Nature Center, built in 2008, provided ecotourism and education services for visitors. However, the recreation area was sometimes destroyed and thus closed due to earthquake and typhoons The purpose of this study was to analyze the landscape changes under the influences of natural disturbances in Basianshan National Forest Recreation Area. I used aerial ortho-photos in four periods, i.e., before 921 earthquake (1998), after 921 earthquake (2001), after Mindulle, Haitang and Matsa typhoons (2005), and after Sinlaku and Jangmi typhoons (2008). The forest, bared soil, watercourse, grass and building areas were classified in each period. I overlapped each landscape maps with FRAGSTATS to realize the landscape status and check the changing patterns with ArcGIS. The landscape status was discussed in two levels, patch class level and landscape level, and the landslide probability was predicted with Logistic regression. The results intended to provide landslide management implications for Dongshih Forest District Office. In the patch class level, the forest area (calculated by land percentage) and forest large patch index (LPI) were decreased after 921 earthquake. On the other hand, the forest edge density (ED) and landscape shape index (LSI) were increased. I also found that the area of bared soil and its patch density (PD) were increased. The results indicated that forest area was destroyed from the earthquake and became fragile. The Mindulle, Haitang and Matsa typhoons had small effects on the areas of forest and bared soil. The results showed that the PD and watercourse and grass areas were increased, which meant the typhoons created dispersed landslides and extended the watercourse and grass areas. Since the forest areas were increased and bared soil areas decreased in 2008, I concluded that to some extent the influences of Sinlaku and Jangmi typhoons were not serious, and the landslide management of Dongshih Forest District Office was effective. In the landscape level, the LPI decreased from 1998 to 2005 but increased in 2008. The PD, ED, LSI and landscape diversity index increased from 1998 to 2005 but decreased in 2008. Huge bared soil areas were occurred in 921 earthquake, where used to cover with forest. There were areas of watercourse and grass increased in Mindulle, Haitang and Matsa typhoons, which made the landscape more complex. The bared soil area was not recovered with forest until 2008. The Dongshih Forest District Office have some some landslide management and natural restoration, making the landscape more complete. The value of mean patch fractal dimension (MPFD) equaled to 1 and remained unchanged, which meant all landscape changes was created by natural disturbances. The results of landscape change analysis showed that there were 2,010.95 ha (85%) forest areas that have never changed. There were 129.99 ha (83%) of bared soil areas (156.66 ha) changed from forest areas in 2001 because of 921 earthquake. There were 56.24 ha (36%) bared soil areas changed to forest in 2005 and represented 88.55 ha (57%) forest in total in 2008. There were 73.08 ha (50%) of 147.32 ha bared soil areas changed from forest after Mindulle, Haitang and Matsa typhoons. There were 52.66 ha (36%) bared areas recovered to forest, but 20.42 ha (14%) still covered by bared soil in 2008. The bared soil areas were decreased to 67.10 ha in 2008, among which 44.69 ha (66%) bared areas have been existed, and 8.65 ha (13%) was created Sinlaku and Jangmi typhoons. A lot of bared areas closed to Shiwen River were not recovered to forest during 1998 – 2008. I suggested these areas should be managed carefully. Finally, I used Logistic regression to realize the relationship between landslide and environmental factors, including distance from the river, elevation, slope and aspect,. The results showed that the landslide often occurred in the areas where the distance of river within 100 m, lower 1,000 m asl, slope over 50° in the south and southwest direction. I used those characteristics to build an equation, ln(p/(1-p)) = -0.705-0.115R-0.184E+0.463S+0.047A, where p represented landslide probability,R was the distance with river, E was elevation, S was slope and A was aspect, to predict landslide probability. The model explained 60% of variance. There were 71.38% the landslide areas occurred in the high and extreme high potential areas.八仙山國家森林遊樂區成立於1978年,由於其擁有豐富的森林資源以及林業歷史,因此成為臺灣中部地區著名的森林旅遊景點,2008年成立自然教育中心後,提供遊客在森林區域內從事生態旅遊活動,進一步發揮森林環境教育的功能。然而過去受到地震與颱風等自然干擾,曾造成遊樂區內多處崩塌、道路中斷,以至於面臨休園的狀況。 本研究欲探討地震與颱風等自然干擾對八仙山國家森林遊樂區地景變遷的影響,使用九二一地震前(1998年)、九二一地震後(2001年)、敏督利、海棠與馬莎颱風後(2005年)以及辛樂克與薔蜜颱風後(2008年)等四個時期的航空攝影正射影像進行地景判釋,將地景分成森林地、裸露地、河道、草生地以及人工用地等五項進行討論。同時以FRAGSTATS軟體進行地景結構與變遷分析,並利用GIS中的空間統計進行地景轉移量分析。最後,針對崩塌地進行環境因子(包含坡度、坡向、海拔高及河流環域)分析,亦以Logistic迴歸計算出崩塌機率,並繪製崩塌潛感圖,期望提供經營管理單位在災害管理與防治上參考。 結果顯示,在嵌塊體類型層級上,地景受到九二一地震的影響,森林地的地景面積比(%Land)、最大嵌塊體指標(LPI)下降,邊界密度(ED)以及地景形狀指標(LSI)上升;而裸露地的面積、嵌塊體密度(PD)上升,亦即表示森林面積受到崩塌的影響而減少且林相變破碎。受到敏督利、海棠與馬莎颱風的影響,森林地與裸露地面積皆稍微下降,但是裸露地PD、草生地以及河道面積上升,表示森林仍持續受到崩塌的影響,而且其崩塌之裸露地較為分散,草生地與河道則有明顯的擴張現象。2008年雖然受到辛樂克與薔蜜颱風的影響,但森林地面積上升、裸露地面積下降,顯示其影響不大,配合森林自然演替以及東勢林管處的崩塌地整治,森林逐漸回復。 在地景層級上,LPI從1998年至2005年呈現下降的趨勢,2008年才上升,PD、ED、LSI以及地景多樣性指標則呈現相反的趨勢。此結果顯示八仙山國家森林遊樂區地景在九二一地震之前以森林為主體(97.13%),故地景較完整且單純,受到九二一地震的影響,裸露地面積從23.22 ha增加至156.66 ha(6.32%),地景漸趨複雜。之後陸續受到敏督利、海棠與馬莎颱風的干擾,除了崩塌數量增加外,河道與草生地面積也隨之擴張,因此2005年地景最為複雜。2008年後由於森林的自然演替以及東勢林管處的崩塌地整治工程,導致森林回復至93.5%,崩塌狀況也改善,故地景漸趨完整。從平均嵌塊體碎形維度(MPFD)沒有明顯變化,且其值接近於1顯示八仙山國家森林遊樂區地景主要係受到自然干擾的影響。 地景轉移量分析結果顯示,八仙山國家森林遊樂區經歷四期的地景變遷,有 2,101.95 ha(85%)的森林地完全沒有改變,表示其並未受到自然干擾的影響。2001年的裸露地有156.66 ha,其中 129.99 ha(83%)原來為森林,顯示九二一地震造成森林地大量崩塌。裸露地中有56.24 ha(36%)在2005年回復為森林地,到了2008年總共有88.55 ha(57%)回復為森林地。2005年的裸露地有147.32 ha,其中有73.08 ha(50%)來自於森林地,顯示這些森林是受到敏督利、海棠與馬莎颱風的影響而發生崩塌,其中到了2008年有52.66 ha(36%)回復為森林,20.42 ha(14%)仍維持為裸露地。2008年的裸露地有67.10 ha,其中有44.69 ha(66%)在之前就已經成為裸露地,另外有8.65 ha(13%)的森林地受到辛樂克與薔蜜颱風影響轉變為裸露地。研究結果也顯示,從2001年至2008年都是裸露地的地區多集中於十文溪河道沿岸,遠離河道邊的裸露地多半經過幾年後就會回復為森林,故應將十文溪沿岸列為崩塌地防治之重點地區。 最後分析八仙山國家森林遊樂區2001年崩塌地與環境因子間的關係,結果顯示八仙山國家森林遊樂區的崩塌地主要集中於坡度>50°,坡向為南向與西南向坡,海拔高位於1,000 m以下,以及河流環域100 m以內。進一步利用Logistic迴歸分析得到方程式ln(p/(1-p))=-0.705-0.115R-0.184E+0.463S+0.047A,p表示崩塌機率,R表示河流環域因子,E表示海拔因子,S表示坡度因子,A表示坡向因子,其整體預測率有60%,而實際崩塌地則有71.38%位於崩塌潛感圖的高潛感以及極高潛感區域中。摘要...............................................................................................................................i Abstract........................................................................................................................iii 目錄...............................................................................................................................v 表目次.........................................................................................................................vii 圖目次........................................................................................................................viii 第壹章 前言………………………………………………………………………….1 第貳章 前人研究…………………………………………………………………….4 一、 土地利用型判釋……………………………………...…………………………4 二、 地景結構與變遷分析……………………………..…………………………….8 三、 地景指標介紹.....................................................................................................12 四、 Logistic迴歸分析……………………………………….......…………………17 第參章 材料與方法………………………..……………………………………….19 一、 研究樣區………...……………………………………………………………..19 二、 多時期正射影像……………………………………………………………….20 三、 地震與颱風資料收集………………………………………………………….24 四、 研究方法.............................................................................................................24 五、 FRAGSTATS地景結構與變遷分析...................................................................26 (一)一般性指標...................................................................................................26 (二)形狀性指標...................................................................................................27 (三)多樣性指標...................................................................................................28 六、地景變遷檢定.....................................................................................................29 七、GIS空間統計分析..............................................................................................29 八、Logistic迴歸分析崩塌地與環境因子間之關係................................................30 九、研究流程圖.........................................................................................................31 第肆章 結果與討論………………….…………..………………………………….33 一、 土地利用型判釋………………………….……………………………………33 二、 利用FRAGSTATS進行地景結構與變遷分析………...……………….…….37 (一)嵌塊體類型層級指標……………………………………………………...37 1.一般性指標(%Land、LPI、PD、ED)……………….…………………37 2.形狀性指標(LSI、MSI、MPFD)….….………………….……………..41 (二)地景層級指標…………………………………………….………………..43 1.一般性指標(LPI、PD、ED)……………………………………………44 2.形狀性指標(LSI、MSI、MPFD)….……………………………………44 3.地景多樣性指標…………………………………………………………44 三、 利用GIS空間統計進行地景轉移量分析…………………………………….47 四、 利用Logistic迴歸進行崩塌地環境因子分析………………………………...54 (一)崩塌地分布特性…………………………………………………………...54 (二)崩塌因子分析………………………………………………………..…….59 第伍章 結論….……………………………………………..……………………….63 第陸章 建議................................................................................................................65 第柒章 參考文獻........................................................................................................66 附錄一 八仙山國家森林遊樂區四個時期地景轉移量............................................6

    甕仔雞集合創造『蘭陽奇雞』

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    最近大家對美牛瘦肉精吵的沸沸揚揚及禽流感弄得人心惶惶,但在台灣的後花園蘭陽平原裡有一群人正努力著打造台灣土雞品牌,以品牌打倒大眾對雞肉的疑慮及打造新宜蘭特產甕仔雞。   在出國道五號雪山隧道後,眼簾出現的是一望無際的蘭陽平原,下了第一個交流道往礁溪的路有許多的甕仔雞店。由於國道五號開通、休閒觀光日漸重視,以及礁溪具有著名的溫泉,為宜蘭礁溪帶來帶大量人潮,因而吸引的許多甕仔雞店進駐礁溪一帶。因競爭激烈,眾多的桶仔雞業者各自研發特殊窯烤法與獨家香料調味,使宜蘭礁溪具有許多特色甕仔雞,透過集合各礁溪特色甕仔雞業者建立宜蘭地區「蘭陽奇雞」品牌,為母品牌「台灣奇雞」(www.twtfc.com.tw)中的子品牌之一,透過集體的力量推廣甕仔雞,結合蘭陽境內人文文化與好山好水所出產的農產品,組合甕仔雞成蘭陽特殊餐點,讓甕仔雞成為蘭陽的特色產品之一。讓前來觀光的民眾不只體驗這蘭陽平原那輕柔的風、芬芳的空氣、美好的景物,也可以品嘗那獨特的甕仔雞,使旅遊更完整

    啟動『台灣奇雞』!

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    最近因美國牛肉瘦肉精及禽流感事件,使得民眾對肉品產生很多疑慮,紛紛改買本土牛肉與具有優良品牌掛保證的雞肉,以避免購買到來路不明不安全的產品。而具有品牌的雞肉不只可減少消費者對產品的疑慮,也提供台灣養雞、賣雞、加工雞肉的廠商新的成長立基。   台灣土雞具有相當多優點,肉質緊實具有咬感,脂肪含量較低,含多元不飽和脂肪,適合小孩、中老年人、孕婦、疾病體弱者理想蛋白食品,但近年來,因消費族群年齡層結構轉變、外食人口增加、消費型態改變等因素,透過開發與提倡土雞新價值,以開拓土雞新藍海,讓土雞不只是食材,更是台灣驕傲。   在思考如何提高土雞的銷售量時,先必須讓消費者發現及瞭解台灣土雞的真正價值,重視土雞的優點,以提高銷售量,使土雞業者可永續經營。在台灣稻米產業在面對WTO開放進口稻米時,利用建立品牌來制衡價格上的競爭,以不同訴求區隔市場,例如:主打品種:越光米、台梗九號米;主打養生:有機米、鴨間米、五穀米;主打產地:花東米、關山米,利用品牌區隔進口米的價格競爭;本計畫認為台灣土雞在品質、風味上相當具有競爭力,可藉由品牌打造與肉雞市場作出差異化,增加附加價值,開創台灣土雞新藍海。   藉由建立「台灣奇雞」土雞品牌,開拓土雞市場,而以下為台灣土雞品牌打造步驟:1.成立輔導團,2.研擬品牌結構,3.找出各業者特性,4.創立品牌名稱,5.擬定行銷活動

    立方體辨識標誌之擴增實境界面設計─以虛擬食物熱量計算器為例

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    [[abstract]]本論文研究提出「虛擬互動式食物熱量計算器」的系統設計,讓想改善飲食的人可以透過即時的互動計算出食物的卡路里,進而控制一天所應攝取的熱量,我們的系統設計目標是操作簡單、有效、吸引人,而我們利用擴增實境的技術來開發設計。在擴增實境的應用中,辨識標誌的追蹤與攝影機觀看標誌的角度有顯著的影響,當標誌卡片傾斜,攝影機俯視的角度與卡片正面驅於水平,易造成可視面積的不足,因而無法完成位置判斷或正確識別。為了克服這些缺失,本研究提出並實作一個立方體辨識標誌技術的作法,我們將六個平面的辨識標誌整合進同一群組,形成多標誌集,從應用程式的觀點來看多標誌集的操作如同單一標誌一般,但是同時只要有集合中的一個標誌被追蹤出即可成功識別,儘管立方體標誌的追蹤技術會增加系統計算複雜度,但的確可產生較為精確與穩定的追蹤成效
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