Browsing by Issue Date, starting with "2004-06-01"

Now showing 1 - 20 of 70134

Prediction of the bonding states of cysteines using the support vector machines based on multiple feature vectors and cysteine state sequences
(2004-06-01)
Chen, YC
;
Lin, SC
;
Lin, CJ
;
Hwang, JK
;
生物科技學系
The support vector machine (SVM) method is used to predict the bonding states of cysteines. Besides using local descriptors such as the local sequences, we include global information, such as amino acid compositions and the patterns of the states of cysteines (bonded or nonbonded), or cysteine state sequences, of the proteins. We found that SVM based on local sequences or global amino acid compositions yielded similar prediction accuracies for the data set comprising 4136 cysteine-containing segments extracted from 969 nonhomologous proteins. However, the SVM method based on multiple feature vectors (combining local sequences and global amino acid compositions) significantly improves the prediction accuracy, from 80% to 86%. If coupled with cysteine state sequences, SVM based on multiple feature vectors yields 90% in overall prediction accuracy and a 0.77 Matthews correlation coefficient, around 10% and 22% higher than the corresponding values obtained by SVM based on local sequence information. (C) 2004Wiley-Liss, Inc.
石牌醫訊第３４１期
(國立陽明大學, 2004-06-01)
陽明電子報編輯小組
日　期：2004年5月30日-2004年6月5日時間：93年5月30日（星期日），9:00-4:00 地點：活動中心六樓‧山腰上的家講者：王理書　教育科技與諮商雙碩士（美國堪薩斯州立大學）講題：關係裡的自我映照─深層自我的隱喻、關係與自我的整合 ─神奇隱喻的產生與述說‧整合與治療時間：93年5月31日（星期一）12:00-13:10 地點：實驗大樓3F A101 講者：陳家俊教授（師大化學系）講題：奈米材料之生醫應用時間：93年 5月31日（星期一）12:20-13:20 地點：生化所501教室講者：Professor Brenda Kahan （Department of Biomolecular Chemistry, University of Wisconsin）講題：Derivation of Pancreatic Islet Cells from Embryonic Stem Cells 時間：93年5月31日（星期一）下午3:00 地點：微免所 401室講者：許輝吉　教授 (台大病理所) 講題：Hepatocellular carcinoma: Pathology, molecular pathology, and beyond 時間：93年5月31日（星期一）18:30~21:30 地點：山腰大廳講者：李俊宏　醫師（台北市立療養院）講題：電影院及討論會（?美麗境界?老大靠邊閃?火柴人）時間：93年5月31日~ 6月7日(weekday)；每日第七、八堂地點：傳醫大樓乙棟 401 室講者：Professor Lawrence Kahan（ University of Wisconsin ）講題：Structure/function relationships in blood proteins 時間：93年6月1日（星期二）8:10-4:00 地點：活動中心第一會議室講題：陽明醫學教育基金會紀念尹珣若先生碩士班論文比賽時間：93年6月1日（星期二）中午12:00 地點：陽明大學護理館三樓301會議室講者：林姝君　副教授 (口腔生物研究所) 講題：Molecular alterations in areca-associated oral cancer 檳榔口腔癌之分子變異時間：93年6月2日（星期三）10:10-12:00 地點：活動中心第三會議室講者：花亦芬　助理教授講題：期末討論時間：93年6月2日（星期三）晚上7:00-9:00 地點：公務人力發展中心（台北市新生南路三段３０號）講者：公務人力發展中心講員講題：人生哲學時間：93年6月3~4日（星期四~五），8:10-5:30 地點：實驗大樓B1區會議室(原育成中心) 講者：Prof. Hiroshi Masuhara （Head of the Department of Applied Physics,Osaka University, Japan）講題：spectroscopy and nano imaging (I)、spectroscopy and nano imaging (Il) 時間：93年6月4日（五）上午10:10- 2:00 地點：研究大樓 103 室講者：呂育道　教授（ PH.D. in Compuiter Science, Harvard University, 台灣大學, 資訊工程學系及財務金融學系）講題：From Financial Derivatives (衍生性金融商品) to Diffusion Equation 時間：93年6月4日 (星期五) 下午 13:30-14:30 地點：研究大樓 202 室講者：呂　仁博士講題：1. Molecular mechanism of Epstein-Barr virus-enhanced cell migration andproliferation EB病毒增進細胞轉移及增生之分子機制 2. Systematic analysis the biological functions of secreted and transmembrane proteins in stem cells 系統性研究胞外蛋白及膜蛋白在幹細胞中的作用時間：93 年 6月4日（星期五）下午13:30-15:20 地點：傳醫大樓乙棟四樓微免所 401 教室講者：Dr. Hsin-Ling Hsu (徐欣伶)（ Research Assistant Professor Northwestern University Medical School , Chicago, IL）講題：1. Ku acts in a unique way at the mammalian telomere to prevent end joining 2. The MCT-1 oncogene transforms human mammary epithelial cells and deregulates DNA damage response ３４２期截稿日期：93年6月10日（星期四）上午十二時正，敬請踴躍提供訊息。
夏日炎炎．力爭上游 ─ 水上運動大會現場實況轉播
(國立陽明大學, 2004-06-01)
陽明電子報編輯小組
5/25早上，游泳池畔陣陣的喧鬧聲，震天價響。一年一度的水上運動大會歡樂登場，請看我們的現場實況轉播
搶救生命，你準備好了嗎？
(國立陽明大學, 2004-06-01)
陽明電子報編輯小組
5/28（五）上午十時，前環保署署長，現任紅十字會秘書長的郝龍斌先生，在他夫人高閬仙老師的陪伴下，輕鬆地步入本校活動中心第一會議室。郝秘書長這天是應通識中心邀請，為全校師生演講＜搶救生命，你準備好了嗎？＞一小時的演講過程中.
A novel washout filter design for a six degree-of-freedom motion simulator
(2004-06-01)
Liao, CS
;
Huang, CF
;
Chieng, WH
;
機械工程學系
;
Department of Mechanical Engineering
The motion cue performed by a motion simulator is restrained by the workspace of the simulator structure. A typical reasoning is then to build a large motion simulator. unless it is for entertainment, which involves in small simulators. This study proposes a novel approach to designing the washout filter of the motion control of a six degree-of-freedom motion simulator for entertainment purposes. Using information obtained from the inverse kinematics of the simulator, the workspace boundary, detected in real-time, is fed into the washout filter as a reference for the motion planning. The main focus of this approach is to make the motion cue feasible for use in a simulator with a restricted workspace, while ensuring the robustness of the driving system. In this paper, different indices are established to specify the performance of the motion cue. A classical linear washout filter was implemented and compared with the proposed washout filter using the performance indices to demonstrate the benefits of the latter.
選擇性沉積碳奈米結構於矽晶基材之方法
(2004-06-01)
郭正次
;
張惠林
;
林兆焄
;
許智明
本發明選擇性沉積碳奈米結構於矽晶基材之方法，依序包含下列步驟：於矽晶基材上決定欲成長碳奈米結構的區域；於欲成長碳奈米結構的區域生長金屬矽化物；於金屬矽化物表面利用化學氣相沉積法成長碳奈米結構。由於在矽晶基材上之金屬矽化物區域即為碳奈米結構成長區域，因而達到選擇性沉積碳奈米結構之目的，另且，該金屬矽化物區域係由半導體製程方法製造，所以本發明的製程方法與現有半導體設備相容性高。
Shot-noise spectrum of superradiant entangled excitons
(2004-06-01)
Chen, YN
;
Brandes, T
;
Li, CM
;
Chuu, DS
;
電子物理學系
The shot noise produced by tunneling of electrons and holes into a double dot system incorporated inside a p-i-n junction is investigated theoretically. The enhancement of the shot noise is shown to originate from the entangled electron-hole pair created by superradiance. The analogy to the superconducting Cooper pair box is pointed out. A series of Zeno-like measurements is shown to destroy the entanglement, except for the case of maximum entanglement.
Phenomenology of a TeV right-handed neutrino and the dark matter model
(2004-06-01)
Cheung, KM
;
Seto, O
;
物理研究所
;
Institute of Physics
In a model of a TeV right-handed (RH) neutrino by Krauss, Nasri, and Trodden, the sub-eV scale neutrino masses are generated via a three-loop diagram with the vanishing seesaw mass forbidden by a discrete symmetry, and the TeV mass RH neutrino is simultaneously a novel candidate for cold dark matter. However, we show that with a single RH neutrino it is not possible to generate two mass-square differences as required by the oscillation data. We extend the model by introducing one more TeV RH neutrino and show that it is possible to satisfy the oscillation pattern within the modified model. After studying in detail the constraints coming from the dark matter, lepton flavor violation, the muon anomalous magnetic moment, and the neutrinoless double beta decay, we explore the parameter space and derive predictions of the model. Finally, we study the production and decay signatures of the TeV RH neutrinos at TeV e(+)e(-)/mu(+)mu(-) colliders.
Robot motion classification from the standpoint of learning control
(2004-06-01)
Shiah, SJ
;
Young, KY
;
電控工程研究所
;
Institute of Electrical and Control Engineering
In robot learning control, the learning space for executing the general motions of multi-joint robot manipulators is very complicated. Thus, when the learning controllers are employed as major roles in motion governing, the motion variety requires them to consume excessive amount of memory. Therefore, in spite of their ability to generalize, the learning controllers are usually used as subordinates to conventional controllers or the learning process needs to be repeated each time a new trajectory is encountered. To simplify learning space complexity, we propose, from the standpoint of learning control, that robot motions be classified according to their similarities. The learning controller can then be designed to govern groups of robot motions with high degrees of similarity without consuming excessive memory resources. Motion classification based on using the PUMA 560 robot manipulator demonstrates the effectiveness of the proposed scheme. (C) 2003 Elsevier B.V. All rights reserved.
Synthetic quasi-TEM meandered transmission lines for compacted microwave integrated circuits
(2004-06-01)
Chen, CC
;
Tzuang, CKC
;
傳播研究所
;
Institute of Communication Studies
This paper presents a two-dimensional transmission line (2-D TL) that supports quasi-TEM propagation mode and reduces problems associated with compacted meandering of microstrip (MS) on propagation constants and the characteristic impedances commonly observed in conventional one-dimensional MSs. The proposed 2-D TL comprises two layers of metallic surfaces on either side of a dielectric substrate. The top metal surface is a meandered connection of a unit cell with a central patch and connecting arms. The bottom surface is a meshed 2-D periodical ground plane, whose etched portion complements the patch portion of the too surface, forming a complementary-conducting-strip (CCS) TL, enabling a combination of an MS and MS with the tuning septa in a unit cell. Both theoretical and experimental investigations of the CCS TL agree well and demonstrate that it is much less susceptible to the effects of meanderings on the propagation constant and characteristic impedance than an MS for the same meandered pattern. Two design examples are presented to demonstrate the potential for a CCS TL for miniaturizing microwave passive circuits with minimal losses. The first example involves a 5.4-GHz CCS four-port rat-race hybrid, realized in RO4003 and reduces the area of original MS design by 87%. The second example illustrates the applicability of a CCS TL to a monolithic RF integrated circuit using a first-pass design of a 5.2-GHz CMOS oscillator incorporating a CCS TL as a resonator with an area totaling 500 x 600 mum(2) including pads base on Taiwan Semiconductor Manufacturing Company's 0.25-mum 1P5M CMOS process techniques.
Anisotropic pinning effect on a Nb thin film with triangular arrays of pinning sites
(2004-06-01)
Wu, TC
;
Kang, PC
;
Horng, L
;
Wu, JC
;
Yang, TJ
A superconducting Nb thin film with triangular arrays of pinning sites has been fabricated to investigate the commensurate vortex lattices. Vortex-vortex interactions in this pattern film make the observed anisotropy in the pinning properties. Periodic minima appear in the magnetoresistance curves at equal field intervals that can be associated with matching effect. The transport properties at near critical temperatures show anisotropic pinning properties related to the configuration of pinning centers. The critical current is depressed when the driving force is applied along the short diagonal in the rhombic unit cell of pinning array. It implies that the pinning potential along the short diagonal creates a moving channel of vortices in triangular arrays of defects. The pinned and interstitial vortices can be movable in an incommensurate vortex row and a straight unhindered one-dimensional path. (C) 2004 American Institute of Physics.
我愛夏天 ─ 擁抱四校沙攤派對
(國立陽明大學, 2004-06-01)
生命科學系系學會編輯部
;
陽明電子報編輯小組
在艷陽的祝福之下，由陽明大學生命科學系系學會舉辦的「我愛夏天─擁抱四校沙攤派對」5/29在通宵西濱海洋教育園區登場，為了要讓陽明生科系的學生可以跟其他學校生科系有更進一步的交流，陽明生科系學會花上一個學期的時間籌備這場沙灘派對，花上許多巧思、創新，努力聯絡中央大學、清華大學、交通大學的生命科學系，期待他們能夠加入這場夏日盛宴。
Effect of polar substituents on the properties of 1,3,4-oxadiazole-based liquid crystalline materials containing asymmetric cores
(2004-06-01)
Sung, HH
;
Lin, HC
;
材料科學與工程學系
;
Department of Materials Science and Engineering
A series of 1,3,4-oxadiazole-based liquid crystals bearing different polar substituents (n-NPO-X, where X = Me, OMe, Cl, F, CN, and NO2) at the phenyl 4-position have been synthesized and characterized. These angular oxadiazole-based liquid crystals, which are composed of asymmetric cores containing naphthalene units, exhibit stable mesogenic properties including the nematic and smectic A phases. With analogous structural design, the transition temperatures, mesomorphic phases, optical properties, and internal quantum efficiencies show strong dependence on the terminal substitution. In general, by increasing the terminal dipoles, the temperature ranges of the mesophases are enhanced, and both the absorption and photoluminescence spectra are shifted to longer wavelengths.
Synthesis and second-order nonlinearities of chiral prolinol-substituted chromophores
(2004-06-01)
Chou, SSP
;
Yu, CY
;
Lin, HC
;
Yang, PK
;
光電工程學系
A new series of thiophene- and furan-containing chromophores with a chiral prolinol donor and a sulfone acceptor has been synthesized. The UV-vis absorptions, second-order nonlinear optical properties, and X-ray crystal structures are described.
Molecular dynamics for elastic and plastic deformation of a single-walled carbon nanotube under nanoindentation
(2004-06-01)
Fang, TH
;
Jian, SR
;
Chuu, DS
;
電子物理學系
;
Department of Electrophysics
Mechanical characteristics of a suspended (10, 10) single-walled carbon nanotube (SWCNT) during atomic force microscopy (AFM) nanoindentation are investigated at different temperatures by molecular dynamics simulations. The results indicate that the Young modulus of the (10, 10) SWCNT under temperatures of 300-600K is 1.2-1.3 TPa. As the temperature increases, the Young modulus of the SWCNT increases, but the axial strain of the SWCNT decreases. The strain-induced spontaneous formation of the Stone-Wales defects and the rippled behaviour under inhomogeneous stress are studied. The rippled behaviour of the SWCNT is enhanced with the increasing axial strain. The adhesive phenomenon between the probe and the nanotube and the elastic recovery of the nanotube during the retraction are also investigated.
中華醫學會第十九屆九十三年度會員大會暨學術研討會
(國立陽明大學, 2004-06-01)
陽明電子報編輯小組
日期：93年6月6日（日）上午9：00 – 中午12：00 地點：台北市石牌路二段201號台北榮總致德樓第四會議室主辦單位: 中華醫學會 09：00-09：10 開幕 09：10-09：40 林清淵教授 (長榮大學健康科學院院長（黃怡超教授）暨醫學研究所所長) 中草藥研究的展望：以氣喘症的預防及治療為例 09：40-10：10 高尚德教授(中國醫藥大學中醫系) （黃怡超教授）小青龍湯對過敏原誘發實驗性氣喘動物模式呼吸道阻力與免疫調節之影響 The effect of Chinese medicine, Xiao-qing-long-tang (XQLT) on bronchoconstriction and immunomodulation in allergen-sensitized animal model 10：10-10：30 休息（茶水） 10：30-11：00 楊賢鴻教授 (長庚醫院中醫部主任) （黃信彰院長）中藥治療過敏性鼻炎之免疫機轉影響研究 Immunomodulatory effects in patients with perennial allergic rhinitis after treatment with Chinese medicine. 11：00-11：30 邱仁輝教授 (陽明大學傳醫所所長) （黃信彰院長） Experiences of genomic approach to study modulatory effect of Chinese medicinal herbs on liver regeneration 11：30-12：00 討論黃怡超∕蕭明熙授教敬請參加，不需事先報名；聯絡人：游裕瑩 TEL：(02)28712121*3363 FAX：(02)28751562
A novel four-mask-processed poly-Si TFT fabricated using excimer laser crystallization of an edge-thickened alpha-Si active island
(2004-06-01)
Chen, TF
;
Yeh, CF
;
Liu, CY
;
Lou, JC
;
電子工程學系及電子研究所
A novel four-mask-processed polycrystalline silicon thin-film transistor (poly-Si TFT) is fabricated using 50-pulse KrF excimer laser to crystallize an edge-thickened amorphous silicon (a-Si) active island without any shrinkage. This method introduces a temperature gradient in the island to enlarge grains from the edge, especially when the channel width is narrow. The grain boundaries across the width of the channel suppress the leakage current and the drain-induced barrier lowering. Moreover, the proposed poly-Si TFT with a channel length of L = 2 mum and a channel width of W = 1.2 mum possesses a high field-effect mobility of 260 cm(2)/Vs and an on/off current ratio of 2.31 x 10(8).
A novel 25-nm modified Schottky-barrier FinFET with high performance
(2004-06-01)
Tsui, BY
;
Lin, CP
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
High-performance modified Schottky barrier (MSB) FinFET with 25-nm channel length and fully silicided source/drain (S/D) is proposed for the first time. Using an implant-to-silicide technique, an ultrashort and defect-free S/D extension can be formed at temperature as low as 600 degreesC. The MSB FinFET exhibits better current-voltage characteristics than those of published Schottky barrier devices and FinFETs. With 4-nm-thick gate oxide, the I-on /I-off current ratio higher than 10(9) is achieved. The subthreshold swing of 25-nm and 49-nm MSB FinFETs is 83 and 64.5 mV/dec at room temperature. The advantage of low thermal budget relaxes the thermal stability issue for metal gate/high-kappa dielectric integration. It is believed that the proposed MSB FinFET would be a very promising nano device.
徵稿公告
(國立陽明大學, 2004-06-01)
陽明電子報編輯小組
一、南華大學「第四屆現代生死學理論建構學術研討會」徵稿截稿日期：九十三年九月二十日二、中原大學「中原企管評論」徵稿相關資訊（http://www.ba.cycu.edu.tw）三、仁德醫護管理專科學校「仁德學報」徵稿相關資訊（http://www.jente.edu.tw）
Quadtree-segmented image compression method using vector quantization and cubic B-spline interpolation
(2004-06-01)
Chang, CC
;
Chuang, JC
;
Chung, CY
;
資訊工程學系
;
Department of Computer Science
A novel hybrid image compression method based on quadtree is proposed, involving two techniques: vector quantization (VQ) and cubic B-spline interpolation. Traditional block-based image compression methods, such as VQ, block truncation coding and others, do not take the relationship of neighbouring blocks into consideration, which results in a limit to their compression rate. To put it another way, if the relationships between neighbouring blocks can be included in the scheme by application of the quadtree technique and the VQ method, as well as cubic B-spline interpolation, which is exactly what is attempted in this paper, the performance of image compression can be improved significantly. According to the experimental results, this method can achieve satisfactory results in terms of the compression rate, while maintaining an acceptable image quality compared with block-based image compression methods.