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Optical direct-detection OFDM signal generation for radio-over-fiber link using frequency doubling scheme with carrier suppression

(2008-04-28)

Lin, Chun-Ting

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Lin, Yu-Min

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Chen, Jason (Jyehong)

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Dai, Sheng-Peng

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Shih, Po Tsung

This investigation demonstrates the generation of OFDM-RoF signal using frequency doubling technique for the first time, to the author's best knowledge. The 4-Gb/s OFDM signal using 16-QAM format modulated on each subcarrier at a center frequency of 19GHz is experimentally demonstrated. Benchmarked against the OOK format, the 16-QAM OFDM format has the higher spectral efficiency with a sensitivity penalty of less than 2.6 dB. After transmission over 50-km single mode fiber, the power penalties of RF OOK and OFDM signals are less than 0.5dB. (c) 2008 Optical Society of America.

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洗碗-念周鼎

(2008-04-28)

管管

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Tunable fiber amplifier and laser

(2008-04-29)

Chi

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Sien

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Chen

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Nan-Kuang

The present invention has a core and at least one cladding, where, by changing the temperature of the cladding, the material dispersion characteristic of the cladding is changed and a refractive index is varied to make fundamental-mode cutoff tunable as well; and the difference between dispersion slopes of core and cladding is crucial to the sharpness of the fundamental-mode cutoff.

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從 Smangus部落看服務與學習

(2008-04-29)

優繞‧依將

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拉互依‧倚岕

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開放教育推動中心

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Open Education Office

課程日期： 2008年4月29日(三) 演講人：優繞‧依將、拉互依‧倚岕內容摘要：來自新竹尖石司馬庫斯部落的優繞與拉互依講「從 Smangus部落看服務與學習」，讓我們從一般所認知的被服務者的角度去看服務學習。該部落30多年來與台灣社會的互動經驗中，部落與服務團體間產生哪些激盪與交融？內容：影音實況影音(*.flv檔)

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郭芝苑談台灣音樂困境

(2008-04-30)

沈昭邦

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Department of Communication and Technology

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傳播與科技學系

從郭芝苑合唱團來交大演出看台灣現代音樂發展困境

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台灣農村新生命

(2008-04-30)

楊宇軒

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Department of Communication and Technology

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傳播與科技學系

台灣農村新生命

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Chemical formation of palladium-free surface-nickelized polyimide film for flexible electronics

(2008-04-30)

Hsiao, Yu-Sheng

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Whang, Wha-Tzong

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Wu, Sheng-Chang

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Chuang, Kuen-Ru

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材料科學與工程學系

Flexible polyimide (PI) films for flexible electronics were surface-nickelized using a fully solution-based process and excellent adhesion between the nickel and polyimide phases was observed. Polyimide substrates were modified by alkaline hydrolysis, ion exchange, reduction and nickel electroless deposition without palladium. Atomic force microscopy and field emission scanning electron microscopy were used to follow the growth of nickel nanoparticles (Ni-NPs) and nickel layers on the polyimide surface. The surface resistances of the Ni-NPs/PI films and Ni/PI films, measured using a four-point probe, were 1.6x10(7) and 0.83 Omega/cm(2), respectively. The thicknesses of Ni-NPs and the Ni layer on the polyimide surface were 82 nm and 382 nm, respectively, as determined by transmission electron microscopy, and the Ni layer adhered well to PI, as determined by the adhesive tape testing method. (c) 2008 Elsevier B.V. All rights reserved.

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伍角船板－「謝麗香」

(2008-04-30)

謝甄芳

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Department of Communication and Technology

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傳播與科技學系

伍角船板

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童年的回憶─劉興欽

(2008-04-30)

陳惠玟

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Department of Communication and Technology

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傳播與科技學系

動畫─劉興欽

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台灣農村新生命

(2008-04-30)

楊宇軒

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Department of Communication and Technology

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傳播與科技學系

台灣大多數的農村在經歷產業結構的轉變，面臨到年輕人口流失、社區失去定位。新竹縣寶山鄉新城村在過去也像大多數的農村一樣，但是在政府、學界以及當地居民的努力下，新城村重新找回生命力。

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農業新革命新城村找回生命力

(2008-04-30)

楊宇軒

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Department of Communication and Technology

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傳播與科技學系

台灣農村新生命

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高次軒逝世政商學界哀悼

(2008-04-30)

汪承漢

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Department of Communication and Technology

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傳播與科技學系

D-LINK友訊科技董事長高次軒，日前在台北住處突然過世，4/30的今天在台北第二殯儀館舉行公祭，友訊科技員工都到場見董事長最後一面，公祭現場冠蓋雲集，準總統馬英九、聯電榮譽董事曹興成、鴻海集團總裁郭台銘、交通大學校長吳重雨都到場致意。公祭現場，高次軒的照片前，用鮮花排列著DLINK的字樣，友訊科技公司的英文名稱，以告慰他對友訊科技的貢獻。

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上帝打翻的調色盤－墨西哥

(2008-04-30)

謝佳慧

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Department of Communication and Technology

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傳播與科技學系

墨西哥

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Estimation and prediction in linear mixed models with skew-normal random effects for longitudinal data

(2008-04-30)

Lin, Tsung I.

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Lee, Jack C.

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資訊管理與財務金融系註：原資管所+財金所

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Department of Information Management and Finance

This paper extends the classical linear mixed model by considering a multivariate skew-normal assumption for the distribution of random effects. We present an efficient hybrid ECME-NR algorithm for the computation of maximum-likelihood estimates of parameters. A score test statistic for testing the existence of skewness preference among random effects is developed. The technique for the prediction of future responses under this model is also investigated. The methodology is illustrated through an application to Framingham cholesterol data and a simulation study. Copyright (C) 2007 John Wiley & Sons, Ltd.

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iPhone搞創意網友點子多

(2008-04-30)

林暐家

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Department of Communication and Technology

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傳播與科技學系

123

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向校園性騷擾說不

(2008-04-30)

黃夙蓮

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Department of Communication and Technology

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傳播與科技學系

交大

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墨西哥文化美國入侵矛盾多

(2008-04-30)

鄭瑋津

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Department of Communication and Technology

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傳播與科技學系

墨西哥照片故事

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總編輯的話

(2008-04-30)

郭品君

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Department of Communication and Technology

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傳播與科技學系

總編輯的話

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金磚四國認識與分析

(2008-04-30)

薛怡凡

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Department of Communication and Technology

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傳播與科技學系

BRIC金磚四國介紹以及未來趨勢分析。

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農業新生命

(2008-04-30)

楊宇軒

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Department of Communication and Technology

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傳播與科技學系

交大學子關懷台灣農村

Browsing by Issue Date, starting with "2008-04-28"