Browsing by Issue Date, starting with "2016-11-25"

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CDNPatch: a cost-effective failover mechanism for hybrid CDN-P2P live streaming systems
(2016-11-25)
Wang, Chih-Chiang
;
Lin, Ying-Dar
;
資訊工程學系
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Department of Computer Science
Among the most well-established live media distribution technologies is content delivery network (CDN), which improves user-perceived quality of service by delivering content from proxy servers deployed at the Internet\'s edge. In recent years, CDN providers started to tap into their subscribers\' peer-to-peer (P2P) capacity to alleviate their server costs. Under the inherent peer dynamics, a major challenge of these hybrid CDN-P2P systems is to provide efficient failure recovery with good quality of service guarantees at a reduced server cost. In this work we propose a cost-effective failover solution named CDNPatch to address the aforementioned problem. CDNPatch enables peers to periodically precompute a few backup content suppliers by efficient information exchange and maintenance algorithms, and leverages auxiliary CDN servers and an economic server provisioning algorithm to reduce the chance of playback interruption occurring to peers. Our simulation results show that CDNPatch can mask the impact of peer dynamics of 3 real P2P systems, namely, SOPCast, PPStream, and PPTV, with 100% failure recovery success rate and a failure recovery time less than 1 second at a cost of small P2P communication overhead of less than 1 kilobits per second, while using only 10%, 21%, and 51%, respectively, of the pure CDN scheme\'s server consumption.
Strain and optical characteristics study of ferromagnetic GaMnAs fabricated by ion beam induced epitaxial crystallization
(2016-11-25)
Chen, Nai-Hui
;
Chen, Chien-Hsu
;
Lee, Chien-Ping
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
In this study, we use a semi-insulating GaAs wafer to prepare a GaMnAs thin film by Mn ion implantation and subsequent helium ion beam induced epitaxial crystallization. In addition, we use different helium energies to anneal the GaMnAs thin films. The regrown GaMnAs thin films are measured using high-resolution X-Ray diffraction, Raman scattering and spectrophotometry to analyze the crystal structures and optical properties. It is found that the GaMnAs thin films remain fully strained. All experimental results indicate that the GaMnAs thin film is formed after the ion beam induced epitaxial crystallization annealing. (C) 2016 Elsevier B.V. All rights reserved.
Strain and optical characteristics study of ferromagnetic GaMnAs fabricated by ion beam induced epitaxial crystallization
(2016-11-25)
Chen, Nai-Hui
;
Chen, Chien-Hsu
;
Lee, Chien-Ping
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
In this study, we use a semi-insulating GaAs wafer to prepare a GaMnAs thin film by Mn ion implantation and subsequent helium ion beam induced epitaxial crystallization. In addition, we use different helium energies to anneal the GaMnAs thin films. The regrown GaMnAs thin films are measured using high-resolution X-Ray diffraction, Raman scattering and spectrophotometry to analyze the crystal structures and optical properties. It is found that the GaMnAs thin films remain fully strained. All experimental results indicate that the GaMnAs thin film is formed after the ion beam induced epitaxial crystallization annealing. (C) 2016 Elsevier B.V. All rights reserved.
新社花海　綻放台中
(2016-11-27)
張芳語
;
Department of Communication and Technology
;
傳播與科技學系
一年一度的台中新社花海在11月隆重開幕，免費入場和各式活動吸引上萬民眾參與。
城市軌跡
(2016-11-27)
卓業軒
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Department of Communication and Technology
;
傳播與科技學系
以十二張黑白照片記錄勤美商圈的都市角落與象徵性的城市故事。
看見空氣　LASS環境感測
(2016-11-27)
陳昱彣
;
Department of Communication and Technology
;
傳播與科技學系
介紹LASS環境網路感測系統以及創辦者哈爸。
插畫家Yuci　畫出夢想藍圖
(2016-11-27)
劉以寧
;
Department of Communication and Technology
;
傳播與科技學系
八年級網路插畫家Yuci，跳脫舒適圈，為了自己的創業夢想而努力。
美食外送　法制與商機的拔河
(2016-11-27)
曾婕茵
;
Department of Communication and Technology
;
傳播與科技學系
Uber於11月15日正式推出UberEATS餐飲外送服務，違法經營的問題讓其他提供類似服務的業者也連帶備受關注。
萬萬小宇宙　中韓音樂的碰撞
(2016-11-27)
王羽廷
;
Department of Communication and Technology
;
傳播與科技學系
由兩個中國人及一名韓國人所組成的團體，是怎麼在網路上一炮而紅？
獨　舞
(2016-11-27)
陳昶安
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Department of Communication and Technology
;
傳播與科技學系
轉啊轉啊轉，踩著孤獨的舞步，換一個留不住的理由。
性成癮　性與愛的對話
(2016-11-27)
吳偉立
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Department of Communication and Technology
;
傳播與科技學系
評論性愛成癮的女人，揣測導演拋出的訊息。
電業自由化　打開電力市場
(2016-11-27)
張博倫
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Department of Communication and Technology
;
傳播與科技學系
電業法是今年影響民生最大的法案，但媒體曝光率不足，而且非常艱深。藉由此篇報導，說明電業法的爭議所在。
總編輯的話
(2016-11-27)
李瑞彥
;
Department of Communication and Technology
;
傳播與科技學系
本期為第253期，為讀者呈上跨領域深度豐富的文章。頭題為「電業自由化　打開電力市場」，針對電業現況長時間取材、深度敘寫，值得一讀。本期各類目皆有亮眼表現，共通點為深入淺出，富有知識性，不容錯過。
不折志　風骨市長蔡仁堅
(2016-11-27)
范瑀真
;
Department of Communication and Technology
;
傳播與科技學系
前新竹市長蔡仁堅於任內完成多項大型建設，近年積極投入地方導覽、文史講座，並準備2018再度競選市長。
台灣醫療隱私　進步空間大
(2016-11-27)
黃佳俐
;
Department of Communication and Technology
;
傳播與科技學系
透過各個面向探討台灣醫療隱私問題和改善方向。
無聲麻糬　包入無盡的愛
(2016-11-27)
王韋翔
;
Department of Communication and Technology
;
傳播與科技學系
夫妻兩人都是聾啞人士，透過麻糬，傳達出聲音以外的愛。
剩食議題　舌尖上的隱憂
(2016-11-27)
鄭懿君
;
Department of Communication and Technology
;
傳播與科技學系
試著找出剩食浪費的源頭，並針對政府管制、後續剩食流向進行報導。
暗房裡玩光線的人　謝名振
(2016-11-27)
凃易暄
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Department of Communication and Technology
;
傳播與科技學系
介紹深夜名堂的創辦人兼攝影師謝名振，如何將興趣轉為職業，並闡述自己的攝影理念。
姚尚德　默劇路途的追尋
(2016-11-27)
凃湘羚
;
Department of Communication and Technology
;
傳播與科技學系
默劇演員姚尚德，跨越語言之牆的無聲表演，凝鍊著人生多舛的滋味。
永樂商場　歷史風華再現
(2016-11-27)
韓舒容
;
Department of Communication and Technology
;
傳播與科技學系
「永樂布業商場」是北部最大的布料批發零售集散地，商場不僅有著豐厚的歷史淵源，也傳承著產業的發展，新與舊的結合，激盪出新的布業文化。