Browsing by Issue Date, starting with "2015-05-05"

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Embedded system using image coding method
(2015-05-05)
Wu Bing-Fei
;
Chen Yen-Lin
;
Huang Hao-Yu
An image coding method including constructing a plurality of edge models with a Forward Discrete Cosine Transform (FDCT) algorithm; creating adjustment equations each matching one of the edge models; capturing an image comprising pixels; selecting the pixels of the image to define image blocks; detecting by block-edge detection (BED) a pattern collectively exhibited by the pixels in the each of the image blocks and then comparing the detected pattern with patterns of the edge models; changing the patterns of the image blocks to the patterns of the edge models and adjusting the dominating coefficient by the adjustment factor after determining that the patterns of the image blocks approximate to the patterns of the edge models; and performing a coding process on the edge models by LLEC to generate a compressed image corresponding to the edge models. An embedded system is applicable to the image coding method.
交大e-News第185期-蘭花屋升級版與台積電共創竹科教育綠園區
(2015-05-05)
國立交通大學秘書室
;
Secretariat
Cosmological birefringence due to CPT-even Chern-Simons-like term with Kalb-Ramond and scalar fields
(2015-05-05)
Ho, Shih-Hao
;
Kao, W. F.
;
Bamba, Kazuharu
;
Geng, C. Q.
;
物理研究所
We study the CPT-even dimension-six Chern-Simons-like term by including dynamical Kalb-Ramond and scalar fields to examine the cosmological birefringence. We show that the combined effect of a neutrino current and a Kalb-Ramond field could induce a sizable rotation polarization angle in the cosmic microwave background radiation polarization.
Low Cost Facile Synthesis of Large-Area Cobalt Hydroxide Nanorods with Remarkable Pseudocapacitance
(2015-05-06)
Deng, Ming-Jay
;
Song, Cheng-Zhao
;
Wang, Chien-Chia
;
Tseng, Yuan-Chieh
;
Chen, Jin-Ming
Large-area Co(OH)(2)-based supercapacitor electrodes composed of nanotube arrays grown on a 3D nickel-foam (CONTA) electrode and sucker-like nanoporous films grown on a 3D nickel-foam (COSNP) electrode were prepared with a facile electrochemical method for applications in energy storage. These nanoporous Co(OH)(2) electrodes were fabricated with the codeposition of Cu/Ni film on the nickel foam, then etching of Cu from the Cu/Ni layer to form Ni nanotube arrays and sucker-like Ni nanoporous layers, and further cathodic deposition of Co(OH)(2) on the prepared nanoporous Ni substrates. The CONTA and COSNP electrodes exhibited specific capacitances of 2500 and 2900 F/g in a voltage range of 0.65 V (capacitance of the substrates deducted from the total) at 1 A/g in a three electrode cell, respectively. The COSNP electrode demonstrated an excellent supercapacitive performance with specific capacitances 1100 F/g at 1 A/g and 850 F/g at 20 A/g in a voltage range of 1.2 V in a two electrode cell. The remarkable performance of COSNP electrodes correlated with a large conversion of the Co oxidation state during the charge/discharge cycling were examined by in situ X-ray absorption near edge structure (XANES).
Size effect on multiferroic TbMn2O5 nanorods
(2015-05-07)
Yang, Chun-Chuen
;
Tung, Yung-Hsiang
;
Chen, Yi-Jung
;
Hsu, Ting-Wei
;
You, Pang-Yen
The effect of the size of TbMn2O5 on their magnetoelectric properties is studied using a field emission transmission electron microscope, ac magnetic susceptibility, relative dielectric constant, specific heat capacity, and x-ray diffraction at various temperatures. A bulk sample and nanorods with two axial lengths, < L-C >, are investigated. Nanorods with < L-C > of 216 nm and 64 nm crystallize with orthorhombic Pbam symmetry as the bulk material. The axial direction of the two sizes of nanorod is parallel to the c axis of the crystal. No particular radial direction is observed. The critical size for the magnetic ordering of TbMn2O5 is found to be between < L-C > - 64 nm and 216 nm. Experiments on specific heat capacity verified these results. No similar phenomenon concerning the ferroelectric property is observed. At T = 30K and 35 K, the < L-C > - 216 nm sample yields a charge-ordering-like x-ray diffraction peak, which may be associated with the magnetically induced charge ordering superlattice. (C) 2015 AIP Publishing LLC.
BROADBAND CONNECTION STRUCTURE AND METHOD
(2015-05-07)
Li Chun-Hsing
;
Kuo Chien-Nan
A broadband connection structure is disclosed. The broadband connection structure includes a carrier and a chip. The carrier includes a first resonator. The chip includes a second resonator and configured on the carrier using a flip-chip method. The first resonator is connected to the second resonator via a magnetic field and an electric field existing therebetween to transmit a broadband signal between the carrier and the chip. A broadband connection method is also disclosed.
Magnetic tunnel junction based out-of-plane field sensor with perpendicular magnetic anisotropy in reference layer
(2015-05-07)
Lee, Y. C.
;
Chao, C. T.
;
Li, L. C.
;
Suen, Y. W.
;
Horng, Lance
A magnetic tunnel junction (MTJ) with orthogonal magnetic anisotropy and consisting of Ta X/Co40Fe40B20 1.2 (reference)/MgO 2.0/Co20Fe60B20 2.3 (sensing)/Ta 5/Ru 5 (thickness in nanometers), where X ranges from 15 to 30, is proposed and investigated in response to the demand for out-of-plane field sensors. The reference layer with perpendicular magnetic anisotropy (PMA) demonstrates tuneable coercivity ranging from 72 Oe to 175 Oe. The sensing layer exhibits in-plane anisotropy with the avoidance of exchange coupling from the PMA reference layer because of a thick MgO barrier layer. The magnetization reversal behavior of micron scale devices not only corresponds well to the sheet film, but is also independent in terms of shape and size. The magnetoresistance curve exhibits a ratio of similar to 27% in the presence of a perpendicular field and is insensitive to the in-plane field. For perpendicular field sensing, the dynamic range with a sensitivity of similar to 0.3%/Oe can achieve +/- 25 Oe with a coercive field of less than 3 Oe. Additionally, even when bias is applied up to 9.1 mV, magnetic fluctuation still stays below 0.15 mOe. (C) 2015 AIP Publishing LLC.
Characterization and Modeling of Nonfilamentary Ta/TaOx/TiO2/Ti Analog Synaptic Device
(2015-05-08)
Wang, Yu-Fen
;
Lin, Yen-Chuan
;
Wang, I-Ting
;
Lin, Tzu-Ping
;
Hou, Tuo-Hung
A two-terminal analog synaptic device that precisely emulates biological synaptic features is expected to be a critical component for future hardware-based neuromorphic computing. Typical synaptic devices based on filamentary resistive switching face severe limitations on the implementation of concurrent inhibitory and excitatory synapses with low conductance and state fluctuation. For overcoming these limitations, we propose a Ta/TaOx/TiO2/Ti device with superior analog synaptic features. A physical simulation based on the homogeneous (nonfilamentary) barrier modulation induced by oxygen ion migration accurately reproduces various DC and AC evolutions of synaptic states, including the spike-timing-dependent plasticity and paired-pulse facilitation. Furthermore, a physics-based compact model for facilitating circuit-level design is proposed on the basis of the general definition of memristor devices. This comprehensive experimental and theoretical study of the promising electronic synapse can facilitate realizing large-scale neuromorphic systems.
剛柔並濟　來自近畿之聲
(2015-05-10)
張婷芳
;
Department of Communication and Technology
;
傳播與科技學系
近畿小子為傑尼斯旗下雙人演唱組合，曲風為抒情走向，與兩人迥異的聲線搭配，踏出別於主流偶像的音樂道路。
建設纜車　找出核心價值
(2015-05-10)
陳思寧
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Department of Communication and Technology
;
傳播與科技學系
臺灣目前共有兩條營運中及九條規劃中的纜車線道，先前北投纜車確定停止策畫，掀起纜車建設的隱憂。
國片票房　誰來買單
(2015-05-10)
沈祖廷
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Department of Communication and Technology
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傳播與科技學系
分析近九年的國片產量和總票房的關係，並深入電影票房和預算資金比值的探討，尋求國片票房提升的解決之道。
人為的迫害　石虎絕種危機
(2015-05-10)
王彥琪
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Department of Communication and Technology
;
傳播與科技學系
臺灣目前唯一野生貓科動物石虎，數量剩不到五百隻。根據研究，造成石虎滅絕的主要因素為人類所帶來的迫害。
臺灣合唱　邁進與希望　
(2015-05-10)
包金
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Department of Communication and Technology
;
傳播與科技學系
臺灣合唱團，或許在很多方面都遇到瓶頸，但經過許多人努力，往更新的未來展望。
高空傳奇　鋼索上的夢想
(2015-05-10)
吳建勳
;
Department of Communication and Technology
;
傳播與科技學系
【偷天鋼索人】紀錄法國傳奇高空鋼索人菲利浦．佩帝，在1974年成功地在世界貿易大樓完成高空鋼索表演。
阿坤與搖滾
(2015-05-10)
賴坤猷
;
Department of Communication and Technology
;
傳播與科技學系
透過吉他，阿坤認識搖滾樂。透過搖滾樂，阿坤再一次認識臺灣。
游出興趣　泳奪交大首金
(2015-05-10)
許鴻財
;
Department of Communication and Technology
;
傳播與科技學系
張芳語現為交通大學游泳隊的一員，游泳不只是興趣，更治癒了身體的疾病，日前甚至在全大運中勇奪金牌，為校爭光。
性別友善廁所　落實真平權
(2015-05-10)
陳致穎
;
Department of Communication and Technology
;
傳播與科技學系
近來，性別友善廁所如雨後春筍冒出，許多學生都努力爭取，希望能真正落實尊重多元性別的權利。
小小瓶身　封存美好瞬間
(2015-05-10)
陳怡均
;
Department of Communication and Technology
;
傳播與科技學系
香水的玻璃瓶身內，封裝著植物萃取出的芳香，更成功複製了電子訊號無法模擬的嗅覺感動。
客家八音　傳統文化存續
(2015-05-10)
余念竹
;
Department of Communication and Technology
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傳播與科技學系
客家八音是客家人音樂文化的精華，但卻逐漸在凋零。
總編輯的話
(2015-05-10)
張薇
;
Department of Communication and Technology
;
傳播與科技學系
本期為喀報二一四期，共有19篇稿件，共計電視專題一篇，新聞圖表四篇，文字八篇，動畫一則，以及五則廣播。