Browsing by Issue Date, starting with "2013-12"

Now showing 1 - 20 of 30024

台灣樂樂棒球運動發展現況之探討
(國立交通大學體育室, 2013-12-01)
黃崇哲
;
黃杉楹
;
莊國上
;
Chung-Je Huang
;
Shan-Ying Huang
樂樂棒球（Tee Ball或T-Ball）在台灣已推行十餘年，乃由棒球運動延伸而來，不但較棒球具有安全性及趣味性，也不受場地限制，更有遊戲規則彈性化之特點，近年來被教育部列為重點推廣發展運動項目，在國小校園中獲得廣大迴響，組隊參賽校數、隊伍人數也日趨增加；而該新興運動不論在校園教學，或是課餘假日時間，對學童的閒暇休閒活動也產生莫大影響。本文旨在探討樂樂棒球運動在台灣的發展與現況，透過文獻回顧分析，瞭解樂樂棒球運動在台灣發展的歷程與推動的情形，並進一步探討樂樂棒球運動的特性，及運動發展中可能遇到的阻礙因素；最後再提出建議，期許未來對樂樂棒球運動在台灣的推廣帶來一些助益。
宛如來自空無的召喚
(2013-12-01)
傑克森 Allyn Jackson
;
翁秉仁
;
Shing-Tung Yau Center
;
丘成桐中心
數學家格羅騰迪克（Alexandre Grothendieck）對於與數學有關的事物非常敏銳，能夠深刻感受到數學建築結構中精巧與優雅的面向。以他生平的一些高峰為例，他是法國科學高等研究院（IHÉS）的創辦人之一，1966年又獲得費爾茲獎，光這些就足以保證他躋身二十世紀數學的萬神殿。不過這些細節並不足以掌握格羅騰迪克研究的本質，他的成就根源植於更有生機、更質樸的地方。正如他在長篇回憶錄《收割與播種》（Récoltes et Semailles）中所述：「聆聽事物之聲的專注品質，陶冶出研究者創造力與想像力的品質。」（黑體為原作者所加，27頁）。如今格羅騰迪克自己的聲音，體現在他的著作裡，也彷彿得透過空無，才能傳到我們的耳中。高齡八十五歲的他，住在法國南部一處偏遠的小村落裡，已經遯世隱居十餘年。
Distribution and drug susceptibilities of Candida species causing candidemia from a medical center in central Taiwan
(2013-12-01)
Chang, Te-Pin
;
Ho, Mao-Wang
;
Yang, Yun-Liang
;
Lo, Pai-Chang
;
Lin, Pei-Sheng
Invasive fungal infections have increased significantly in the past few decades because of the increase in high-risk populations. To investigate the distribution and drug susceptibilities of such infections, we analyzed all 152 Candida isolates causing candidemia from 2004 to 2006 at the China Medical University Hospital, a medical center in central Taiwan. Candida albicans was the most common species, accounting for 52.6 % of the isolates, followed by C. tropicalis (19.7 %), C. parapsilosis (14.5 %), C. glabrata (8.6 %), C. guilliermondii (3.9 %), and C. pelliculosa (0.7 %). All isolates were susceptible to amphotericin B, anidulafungin, micafungin, and voriconazole according to minimum inhibitory concentrations (MICs) after a 24-h incubation; 0.7 %, 6.6 %, and 7.9 % of isolates were resistant to amphotericin B, fluconazole, and voriconazole, respectively, after 48-h incubation. Both C. albicans and C. parapsilosis had high degrees of agreement for azoles between 24- and 48-h incubation periods, whereas C. glabrata (38.5-46.2 %) and C. tropicalis (56.7-63.3 %) did not. The majority of the isolates with high azole MICs displayed a trailing growth phenotype. Hence, the MICs of different drugs after 24-h incubation may be considered for prognosis of candidemia.
Do journal authors plagiarize? Using plagiarism detection software to uncover matching text across disciplines
(2013-12-01)
Sun, Yu-Chih
;
英語教學研究所
;
Institute of Teaching English to speakers of other Languages
The current study aims to explore the extent of matching text in published journal articles and how the number of authors and their various official languages influence the extent to which matching text appears. Six hundred journal articles in Science, Technology, Engineering, and Mathematics (STEM) and Social Science were randomly selected and screened by both plagiarism detection software (Turnitin) and human raters(s). The results indicate that disciplinary differences do exist in terms of the degree of matching text incidences. Journal articles in STEM tend to contain significantly more consecutive matching text from other sources than Social Science journal articles. However, it is not clear if this is discipline dependent. In addition, authors tended to have more consecutive text copied from their own previously published works than that of others' publications. Furthermore, the greater the number of authors an article has the more consecutive text-matching can be observed in their published works. Additionally, authors located in contexts wherein English is an official language do not differ significantly from those in contexts wherein English is not an official language on their Turnitin scores and the number of 30-word or longer strings of consecutive matching text from self-published articles and self-and-others' publications combined. (C) 2013 Elsevier Ltd. All rights reserved.
【第十四屆校友會會務】會長的話
(國立陽明大學牙醫校友會, 2013-12)
蕭智君
有五階對稱的晶格嗎？
(2013-12-01)
科里澤克 Michal K ížek
;
梭茨 Jakub Šolc
;
莎可娃 Alena Šolcová
;
黃俊瑋
;
Shing-Tung Yau Center
日耳曼學者克卜勒（Johannes Kepler，1571–1630），做為布拉格神聖羅馬帝國皇帝魯道夫二世的宮廷數學家，尤其以天文學上的發現著名。他從第谷‧布拉赫（Tycho Brahe）觀察火星的數據，所推得的三大行星運動定律，時至現今依舊令人們欽佩。克卜勒另一個傑出的發現是克卜勒方程式，這方程式描述了行星在公轉軌道上時間和位置之間的關係。這個方程式現在通常是從克卜勒第一與第二定律，利用無窮小量微積分推導，但是克卜勒當時則是利用橢圓和圓的幾何性質就得到此結論。
Electrophoretic fabrication and pseudocapacitive properties of graphene/manganese oxide/carbon nanotube nanocomposites
(2013-12-01)
Hung, Chung Jung
;
Lin, Pang
;
Tseng, Tseung Yuen
;
材料科學與工程學系
;
電子工程學系及電子研究所
Hybrid nanocomposites provided a synergistic improvement on electrochemical performance and stability for pseudocapacitor. Designed graphene/carbon nanotubes (CNTs)/MnO2 nanocomposites with CNTs electrode (in short, GMC + C) with highly nanoporous framework surface structure are fabricated by a modified electrophoretic deposition (EPD) method. Scanning electron microscopy and transmission electron microscopy analysis demonstrate that the flake-like MnO2 thickness (about less than 10 nm) and uniformly distributed on the porous graphene/CNTs framework. X-ray diffraction shows the formation of birnessite-type MnO2. Pseudocapacitances of the GMC + C electrode calculated by cyclic voltammetry having different scan rates of 5, 20, 50, 100, and 300 mV s(-1) exhibit high specific capacitances of 481, 436, 413, 398, and 372 F g, respectively. Sodium ion diffusion coefficients of the GMC + C electrode show a higher intercalation value of 3.647 x 10(-8) cm(2) s(-1) and deintercalation value of 2.899 x 10(-8) cm(2) s(-1) using chronoamperometry. Moreover, the GMC + C electrode maintains a high specific capacitance of 346 F g(-1), and is about 833% of the initial capacitance after 15,000 charge/discharge cycles. The designed hybrid GMC + C nanocomposites pseudocapacitor electrode using EPD route with the high specific capacitance, fast reaction rate, and high stability, exhibits high potential for practical applications. (C) 2013 Elsevier B.V. All rights reserved.
Efficient Heat Dissipation of Photonic Crystal Microcavity by Mono layer Graphene
(2013-12-01)
Shih, Min-Hsiung
;
Li, Lain-Jong
;
Yang, Yi-Chun
;
Chou, Hsiang-Yu
;
Lin, Cheng-Te
Graphene, which exhibits excellent thermal conductivity, is a potential heat dissipation medium for compact optoelectronic devices. Photonic devices normally produce large-quantity of unwanted heat, and thus, a heat dissipation strategy is urgently needed. In this study, single-layer graphene (SLG) grown by chemical vapor deposition (CVD) is used to cover the surface of a photonic crystal (PhC) cavity, where the heat flux produced by the PhC cavity can be efficiently dissipated along the in-plane direction of the SLG. The thermal properties of the graphene-capped PhC cavity were characterized by experiments and theoretical calculations. The thermal resistance of the SLG-capped PhC cavity obtained from experiments is lower than half of that of a bare PhC cavity. The temperature of a SLG-capped PhC cavity is 45 K lower than that without SLG capping under an optical power of 100 mu W. Our simulation results indicate that SLG receives the majority of the heat fluxes from the device, leading to the efficient heat dissipation. Both the experimental and simulation results suggest that the SLG is a promising material to enhance the heat dissipation efficiency for optoelectronic applications.
森蘭丸大絕啟動時降低傷害
(深河出版有限公司, 2013-12-01)
阮郁奇
全像式集光元件及其製法
(2013-12-01)
謝美莉
;
林尚佑
;
許根玉
;
林烜輝
一種全像式集光元件及其製法,信號光經由柱狀透鏡形成柱狀波並入射至一體積全像基材之正面受光面,並同時將參考光由與該全像基材之正面受光面之平行方向入射至該體積全像基材上與該正面受光面之角度不同之側面受光面以進行體積全像記錄,其中,該體積全像基材於該體積全像記錄完成後,可透過該正面受光面接收太陽光以將該太陽光藉由繞射而轉折至位於該側面受光面之法向量的延伸線上之出光面。本發明之全像式集光元件具有較大之集光角度與收光之頻譜範圍,且可大幅提昇集光之效率。
【第十四屆校友會會務】系主任的話─作伙來打拼
(國立陽明大學牙醫校友會, 2013-12)
許明倫
多元普遍主義與左翼倫理政治的內涵－對板垣雄三先生講演的回應
(深河出版有限公司, 2013-12-01)
張志強
The Vortex Core Excitation Spectrum in Gapped Topological d-wave Superconductors
(2013-12-01)
Rosenstein, Baruch
;
Shapiro, Irina
;
Shapiro, Boris Y.
;
電子物理學系
;
Department of Electrophysics
There are indications that some high temperature unconventional superconductors have a "complex" d-wave order parameter (with an admixture of s-wave) leading to nonzero energy gap. Since the coherence length is short and the Fermi energy is relatively small the quasiclassical approach is inapplicable and the more complicated Bogoliubov-deGennes equations should be used to investigate the excitation spectrum of such a material in a magneric field. It turns out that equations for the chiral d-wave superconductor simplify considerably and is the basis for any superconductor of that type with a sufficiently large gap. The spectrum of core excitations of the Abrikosov vortex in an anisotropic 3D sample exhibits several features. Unlike in conventional and gapless superconductors the core has a single excitation mode of order energetic gap for each value of momentum along the field. This has a large impact on thermal transport and vortex dynamics.
Instrument for x-ray absorption spectroscopy with in situ electrical control characterizations
(2013-12-01)
Huang, Chun-Chao
;
Chang, Shu-Jui
;
Yang, Chao-Yao
;
Chou, Hsiung
;
Tseng, Yuan-Chieh
We report a synchrotron-based setup capable of performing x-ray absorption spectroscopy and x-ray magnetic circular dichroism with simultaneous electrical control characterizations. The setup can enable research concerning electrical transport, element-and orbital-selective magnetization with an in situ fashion. It is a unique approach to the real-time change of spin-polarized electronic state of a material/device exhibiting magneto-electric responses. The performance of the setup was tested by probing the spin-polarized states of cobalt and oxygen of Zn1-xCoxO dilute magnetic semiconductor under applied voltages, both at low (similar to 20 K) and room temperatures, and signal variations upon the change of applied voltage were clearly detected. (C) 2013 AIP Publishing LLC.
Performance Evaluation of a 60 GHz Radio-over-Fiber System Employing MIMO and OFDM Modulation
(2013-12-01)
Ho, Chun-Hung
;
Jiang, Wen-Jr
;
Sambaraju, Rakesh
;
Lee, Wei-Yuan
;
Lu, Tsung-Hung
Multiple-input-multiple-output (MIMO) technique for wireless communications is extensively used these days, especially to increase the spectral efficiency of new wireless communication systems like LTE, WiMAX, etc. MIMO in combination with robust modulation techniques like orthogonal frequency division multiplexing (OFDM) provides a good solution for high data rate wireless links. In this paper, the performance of MIMO for a 60 GHz OFDM radio over fiber link is analyzed. System performance of the MIMO system for different antenna spacing is also studied. Using the optimum system parameters, a MIMO OFDM wireless link of up to 51 Gb/s was successfully demonstrated at 60 GHz in a bandwidth of <7 GHz, with a wireless transmission distance of up to 4 m and optical fiber transmission of 1 km. To our knowledge this is the highest data rate demonstrated in the 7 GHz band of 60 GHz.
編輯曲線熱情的孤獨
(2013-12-01)
編輯室
;
Shing-Tung Yau Center
;
丘成桐中心
熱情的孤獨三年一度的世界華人數學家大會，今年再度回到臺灣舉辦，距離上次已經12年。在這個科技不斷加速的時代，12年有許多改變。但是不管網路科技、編輯科技如何進步，大自然的運行如常，數學的嚴整清麗如常，數學家試圖理解抽象宇宙的熱情如常。
沖繩民眾走在我們的前面－回應新崎盛暉先生
(深河出版有限公司, 2013-12-01)
孫歌
追念文吉
(深河出版有限公司, 2013-12-01)
郭力昕
運動策略介入對國小學童運動行為及身體活動之影響
(國立交通大學體育室, 2013-12-01)
翁誌誼
;
林俊良
;
Chih-Yi Weng
;
Jun-Liang Lin
本研究目的以探討跨理論模式設計的運動策略，對國小學童之運動行為階段、身體活動量及運動行為階段移動類型身體活動量之影響。研究對象以立意取樣方式，選取偏鄉地區的國民小學四、五、六年級學生，有效樣本共247人（男生129人、女生118人）。研究方法採用「準實驗設計」，依據跨理論模式的改變方法，設計出十項運動策略，以同一組受試者進行十二週的運動策略介入，以「運動行為階段量表」與「運動參與行為問卷」為工具，實驗前後分別測試。資料處理採用描述性統計分析、相依樣本t考驗、卡方檢定及共變數分析，檢定實驗介入之成效。研究結果如下：一、經運動策略介入後，學童在運動行為階段有顯著之提升，對學童在運動行為階段有顯著的前進移動效果。二、經運動策略介入後，學童的身體活動量顯著增加，可見適度介入可促進學童積極參與運動。三、經運動策略介入後，運動行為階段移動類型之身體活動量，後測表現有顯著差異，不僅能提升學童的運動意願（漸進移動效果），而且有即刻行動、立竿見影的效果（跳躍移動效果）。根據研究結果，本研究的結論為：運動策略可運用於國小學童，以提升規律運動人數，誘導學童積極從事運動，提升身體活動量。
Separating spectral mixtures in hyperspectral image data using independent component analysis: validation with oral cancer tissue sections
(2013-12-01)
Duann, Jeng-Ren
;
Jan, Chia-Ing
;
Ou-Yang, Mang
;
Lin, Chia-Yi
;
Mo, Jen-Feng
Recently, hyperspectral imaging (HSI) systems, which can provide 100 or more wavelengths of emission autofluorescence measures, have been used to delineate more complete spectral patterns associated with certain molecules relevant to cancerization. Such a spectral fingerprint may reliably correspond to a certain type of molecule and thus can be treated as a biomarker for the presence of that molecule. However, the outcomes of HSI systems can be a complex mixture of characteristic spectra of a variety of molecules as well as optical interferences due to reflection, scattering, and refraction. As a result, the mixed nature of raw HSI data might obscure the extraction of consistent spectral fingerprints. Here we present the extraction of the characteristic spectra associated with keratinized tissues from the HSI data of tissue sections from 30 oral cancer patients (31 tissue samples in total), excited at two different wavelength ranges (330 to 385 and 470 to 490 nm), using independent and principal component analysis (ICA and PCA) methods. The results showed that for both excitation wavelength ranges, ICA was able to resolve much more reliable spectral fingerprints associated with the keratinized tissues for all the oral cancer tissue sections with significantly higher mean correlation coefficients as compared to PCA (p < 0.001). (C) The Authors.