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[[alternative]]Assessment, Examinations and Historical Understanding
No full text[[abstract]]一個長年存在的矛盾狀況是，歷史教師與試務人員在爭相指責那種要學生不花腦筋地反芻歷史資料的做法時，又相互指責對方該對此種長久存在的錯誤負責。本文的基本目的是為了鼓勵更深入的思考和行動，以找出一些可行之道來改變這種狀況，並用評量（包含各種考試）來幫助有意義的學習與理解。[[fileno]]204_JA04_2001_n12_p
[[alternative]]Book Review': The Master of Human Beings: Europe's Attitude Towards Other Cultures in the Period Of Imperialism
No full text[[abstract]]筆者認為，中學生的歷史閱讀應注重在正面意義的建立。舉凡培養對某一傳統的喜好、認識與建立對人物行誼的學習等等，都應當特別著力。至於對傳統中某些因子的揚棄或加以轉換創造，及對人物行為的批判等，或應點到為止，而留待大學教育來發揮。以此為前提，本書所預設的讀者應不是中學生，換個角度說，本書的知識不易由中學生直接學習，因此中學教師的接受、消化，進而反哺的工作便顯得重要。[[fileno]]204_JA04_2001_n12_p14
[[alternative]]A Primary Research on Learning History by Inquiry in the Classroom
No full text[[abstract]]本文係北京市九．五教育科研課題“歷史學習心理與教學對策研究”子課題的研究內容，探討歷史課問題探究式學習的理論與實踐。首先，本文指出了重在培養創新精神和實踐能力的問題探究式學習在當代世界性基礎教育改革的突出地位；闡述了問題探究式學習的理論依據和心理依據，並分析了歷史課堂問題探究式學習的特點和價值；提出了發展問題探究式學習的教學原則；建立了與問題探究學習理論相適應的歷史課堂教學設計的結構與方法體系，並展示了課題組所研究的歷史課問題探究學習的模塊與課例。[[fileno]]204_JA04_2002_n13_p8
[[alternative]]Let's Do Some Experimental Teaching in Calss
No full text[[abstract]]老師對自己教學的不滿，正是教學有所改進、提升的契機。但是，提升的關鍵在於教學方法的自我改進，而改進則需要勇於嘗試的精神。唯有從不斷的實驗中加以調整、修改，教學的方法才能有所進步，教學的效果方能有所提升。[[fileno]]204_JA04_2004_n15_p
[[alternative]]49, 41, 30, 19, 12: On the Reasonableness of the Questions of the Subject of History in DRT (Department Required Test) in 2004
No full text[[abstract]]「49」，知道這個數字代表什麼意思嗎？這是93年指定科目考試歷史考科的「頂標」，意指全國百分比第88分位的考生在歷史這一考科中所獲得的分數。這個分數不僅遠低於所有其他考科的頂標，連同「41、30、19、12」所代表的「前標」、「均標」、「後標」、「底標」也幾乎都是敬陪末座。近年來，歷史榮登「最難」的考科雖非第一次，但從未如今年各項指標分數均遠低於其他各科。我們要問的是：「為何要如此？」「為何會如此？」[[fileno]]204_JA04_2004_n15_p11
Improved Performance of an internal-mirror He-Ne laser (lambda equals 633 nm) stabilized by the total power method
No full text[[abstract]]A preliminary investigation of the relative merits of the present method and other related methods such as the two-mode method were reported previously by the authors. In this paper they present results of further experiments which illustrate for the first time several important issues which need to be considered for laser stabilization by the total power method. Improved laser stabilities are obtained[[fileno]]2010144010014[[department]]物理
Demonstration of a Novel Wide-Band Optical Signal Generator by Deep Phase Modulation in a Fiber Coupler
No full text[[abstract]]A simple method for wide bandwidth optical signal generation has been realized by applying a deep phase modulation signal in a fiber coupler which acts as an all-fiber Michelson interferometer. The output of the interferometer displays a discrete spectrum with a nearly leveled output and frequency bandwidth up to a hundred times that of the frequency of the modulation signal. In this first demonstration, we have generated frequency components up to 4 MHz (with external modulation) and 50 MHz (by direct modulation of the laser diode) respectively. Multigigahertz operation is possible in the future with wideband integrated-optic phase modulators[[fileno]]2010144010030[[department]]物理
Near-infrared Transmission Measurement of EL2 Concentration in Semi-Insulating GaAs Wafers with a Laser Diode ( = 1.3 μm)
No full text[[abstract]]We demonstrated a near-infrared transmittance setup for EL2 concentration mapping in undoped semi-insulating (SI) GaAs wafers. The light source was a power-stabilized laser diode (lambda = 1.3-mu-m) operating in the light emitting diode (LED) mode. The sensitivity of the apparatus was as low as 10(14) cm-3 for typical commerical wafers 350-mu-m in thickness[[fileno]]2010144010031[[department]]物理
Birefringence-induced Spectral Features in Continuous-wave and Passively Mode-locked Ti: Sapphire Lasers
Get PDF[[abstract]]We show that the transient spectrum of a continuous-wave Ti:sapphire laser during the initial stage of the buildup, which exhibits multiple clusters (of longitudinal modes), is due to the spectral windowing effect of the Brewster-angle-cut Ti:sapphire crystal, which acts as a birefringent filter in the laser cavity. This effect is also responsible for certain spectral features of a passively mode-locked Ti:sapphire/DDI laser[[fileno]]2010144010051[[department]]物理
Optoelectronic Phase Locking of Microwave Signals Up to 4GHz Using a Laser-Diode-Based Electrooptic Harmonic Mixer
No full text[[abstract]]A reflection-mode GaAs electrooptical sampler has been used for constructing a harmonic mixer to optoelectronically phase-lock microwave signals up to 4 GHz in a laser-diode-based system. The conversion loss of the harmonic mixer is 81 dB. The phase noise degradation of the phase-locked 4-GHz signal at 5-kHz offset measured with respect to the 500-MHz synthesizer signal driving the laser diode is 38 dB[[fileno]]2010144010054[[department]]物理