27,180 research outputs found
The effect of BisGMA on cyclooxygenase-2 expression, PGE2 production and cytotoxicity via reactive oxygen species- and MEK/ERK-dependent and -independent pathways
No full textCopyright © 2009 Elsevier Ltd All rights reserved.Mei-Chi Chang, Li-Deh Lin, Chiu-Po Chan, Hsiao-Hua Chang, Lin-I. Chen, Hsueh-Jen Lin, Hung-Wei Yeh, Wan-Yu Tseng, Po-Shuen Lin, Chiu-Chun Lin and Jiiang-Huei Jenghttp://www.elsevier.com/wps/find/journaldescription.cws_home/30392/description#descriptio
Variation of Ichthyoplankton Density Across the Kuroshio Edge Exchange Area with Implications as to the Water Masses
No full text
Framing Analysis and Representations of the Imports of American Meat Containing Ractopamine in Taiwanese Newspapers
No full text本研究探討台灣政治立場不同的兩大平面媒體—《聯合報》與《自由時報》報導瘦肉精肉品安全風險新聞時再現何種論述框架，背後呈現何種社會意義？而政黨輪替前後媒體所再現的框架論述出現何種變化？兩大報呈現的框架論述是否有差異？本研究以框架分析途徑，輔以內容分析法，比較兩大報2007年7月至9月、2012年1月至3月兩個瘦肉精新聞高峰期的新聞報導。發現報導中出現經貿發展、食品安全爭議、責任歸屬，以及政治工具四個主要框架；立場不同的兩大報，隨著政黨輪替，框架論述也出現很大變化。足見媒體框架有其社會脈絡，且是會隨社會變遷而變化的動態過程。透夠本研究能深入思考隱藏在新聞文本中的權力互動，避免被議題操弄，才能有效作好食品安全風險評估。The thesis used framing analysis as the main research method and content analysis as the subsidiary research method to analyze the two different newspapers in Taiwan, including United Daily News and Liberty Times, which are different political statement from each other. The study object is to explore how the two different newspapers represented the food safety and health risk issue with regard to the lifting Ractopamine ban in Taiwan during the periods between September 2007 and January 2012 that Taiwan’s government for allowing imports of American beef containing the residues of Ractopamine.
The framing analysis of the results present four main framing package: the development of economy and trading, the controversy of food safety, Liability /Accountability, and political instruments. The framing in discourse varies between the United Daily News and Liberty Times as a result of their different viewpoints. Moreover, the framing in discourse between two newspapers changes drastically accompanied by party alternation in power. Therefore, the media framing is a dynamic process.目 錄
口試委員會審定書…………………………………………………………………i
致謝………………………………………………………………………………...ii
中文摘要…………………………………………………………………………..iii
英文摘要…………………………………………………………………………..iv
第一章 緒論 1
第一節 研究動機 1
第二節 研究背景 2
第三節 研究重點 5
第四節 研究重要性 6
第二章 文獻探討及研究問題 9
第一節 風險的本質、風險社會與風險管理 9
第二節 風險傳播 13
第三節 食品安全風險傳播中的媒體角色 15
第四節 媒體框架與風險建構 18
一、框架的定義 18
二、媒體框架 19
三、框架包裹 21
第五節 食品安全風險議題的媒體再現研究 25
第六節 研究問題 28
第三章 研究方法 30
第一節 研究設計 30
第二節 樣本選擇 31
第三節 新聞框架建構 37
一、一般新聞資料 37
二、新聞內容 38
三、新聞框架分析說明 39
第四章 研究結果 41
第一節 瘦肉精爭議新聞框架的再建構 42
一、經濟利益包裹 46
二、安全爭議包裹 52
三、責任歸屬包裹 58
四、政治工具包裹 64
第二節 瘦肉精新聞框架的競爭與變遷分析 68
第三節 主流報紙再現瘦肉精新聞的框架論述差異分析 71
第五章 討論與結語 77
第一節 研究結果 77
一、瘦肉精爭議新聞框架再現的意識形態與社會價值觀 77
二、瘦肉精是囊括食品風險、政治與經濟爭議的複雜議題 83
三、瘦肉精爭議新聞再現是動態的框架化過程 86
第二節 研究限制與建議 88
第三節 結語 90
參考文獻 9
Navigation of a Biomimetic Autonomous Underwater Vehicle by Using Stereo Fisheye Cameras in a Known Environment
No full text本文描述仿生機器魚利用雙魚眼攝影機、電子羅盤及加速度計在一個已知的水下環境下的定位演算法。首先，本文介紹一種立體魚眼攝影機的校正方法，經由校正之影像，使用離散適應性增強演算法訓練的哈爾特徵分類器分類，其結果可被用在辨識已知水中目標物，再利用雙眼特徵對應來估測機器魚與已知目標物間的相對距離，而此估測的相對距離即可當作觀測資訊，整合來自電子羅盤及加速度計的資料(航向角度及三軸加速度)所形成之運動模型中。此模型結合運動模型及觀測資訊，構成機器魚之延伸型卡曼濾波器定位演算法，以達成機器魚在已知環境中之自我定位的目的。最後，本論文展示實驗數據，以驗證此導航法之可行性，並說明定位精度與攝影機的量化誤差、感測器雜訊及背景複雜度之關係。This work describes a localization algorithm for a fish robot by utilization of stereo fisheye cameras, a compass, and an accelerometer in a known underwater environment. A theory of the stereo fisheye cameras calibration is introduced. Classifiers which use Haar-like features are trained by discrete AdaBoost algorithm and they are used to recognize known landmarks in the underwater environment. Relative distances between the fish robot and the landmarks are then estimated by using stereo features correspondence. Taking the relative distances with respect to the landmarks as observation information, an extended Kalman filter algorithm integrates them with heading angles and 3-axis accelerations from the compass and the accelerometer into the motion model. The extended Kalman filter localization algorithm generates position estimations for BAUV’s self-localization. Finally, the localization algorithm is verified by experimental data, and it can be demonstrated that localization accuracies are limited by the quantization errors of the cameras, the sensors noises, and the background complexity
The political role of the people's liberation army 1949-1973
No full textThis thesis is to study the political role of the People's Liberation Army from the approach of structure and function. The framework of the thesis consists of three major parts, first, the influence of Chinese traditional political culture on, and the formation of, the political role of the PL A; second, the influence of domestic political struggles and external military conflicts on the development of the political role of the PLA; and the third, the analysis of the transition of the PLA's political role from the structure and personnel arrangements of the CCPCC Within the above-mentioned three scopes, this thesis make a thorough discussion on the following: (1) The relationship between the structure of the PRC and the formation of the PLA's political role; (2) How has ideology influenced the army's political role; (3) What is Mao's viewpoint and his influence on the development of the army's political role; (4) What is the link between the army and the party, and how has this developed; (6) What accounts for the expansion of the PLA's political functions; (7) What is the influence of political factional struggles on the PLA's political role; (8) Is it political institution or military institution that controls the recruitment of the military elite; (9) What are the disparities between the military elite in handling international conflicts and what are their political considerations; (10) What is the Party's position in the army; (11) How have the Party’s important meetings and personnel arrangements influenced the rise and fall of the PLA's political role
Supporting spatial skill learning with gesture-based embodied interaction
No full textPrior research has revealed that spatial abilities are crucial for STEM achievement and attainment. The connection between the digital and physical worlds provided by embodied interaction has been shown to enhance performance and engagement in educational contexts. Spatial reasoning is a domain that lends itself naturally to embodied, physical interaction; however, there is little understanding of how embodied interaction could be incorporated into educational technology designed to train spatial reasoning skills. We presented a custom-built computer game for training spatial reasoning skills and a gestural interface that implements embodied interaction design in the learning setting. In addition, we proposed a series of gesture set design derived from an iterative design approach that is easy for children to acquire, shows sufficient congruency to specific spatial operations, and enables robust recognition from the system. Several guidelines for gestural interaction in spatial education games were also extracted from the design process based on an empirical study with students at a local afterschool program. We also compared children's behaviors when playing the game with our gestural interface and traditional mouse-based interface and found that children take more time but fewer steps to complete game levels when using gestures.Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo termsThe student, Po-Tsung Chiu, accepted the attached license on 2017-12-09 at 13:12.The student, Po-Tsung Chiu, submitted this Thesis for approval on 2017-12-09 at 13:30.This Thesis was approved for publication on 2017-12-12 at 12:19.DSpace SAF Submission Ingestion Package generated from Vireo submission #11934 on 2018-03-13 at 10:12:00Made available in DSpace on 2018-03-13T15:49:12Z (GMT). No. of bitstreams: 2
CHIU-THESIS-2017.pdf: 35603519 bytes, checksum: e7991c0f39c264b26a052a2df3664da1 (MD5)
LICENSE.txt: 4210 bytes, checksum: e6e0836c48f874c78ca27c85d82f31d0 (MD5)
Previous issue date: 2017-12-1
Prospects of Chinese computing in Hong Kong.
No full textby Hui Chiu-kwong & Tsoi Po-tak.Questionaire in Chinese and EnglishBibliography: leaf 89Thesis (M.B.A.)--Chinese University of Hong Kong, 198
A critical analysis of the "braindrain problem" from human resources perspectives.
No full textby Fong Siu Ho, Kwan Po Chiu, Lee Kwong Tong.Thesis (M.B.A.)--Chinese University of Hong Kong, 1989.Includes bibliographical references
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