Browsing by Issue Date, starting with "2014-06-17"

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Dextran-encapsulated photoluminescent gold nanoclusters: synthesis and application
(2014-06-17)
Chiu, Wei-Ju
;
Chen, Wei-Yu
;
Lai, Hong-Zheng
;
Wu, Ching-Yi
;
Chiang, Hsiang-Lin
Dextrans are widely used as additives in food, pharmaceutical, and cosmetics because of their hydrophilicity, biocompatibility, and low toxicity. These features allow the use of dextrans to modify the surface of nanoparticles to improve cell compatibility for biomedical applications. Additionally, dextran molecules covalently bound with fluorescent dyes are frequently used as tracers in animal studies. These facts show that dextrans are useful compounds for biomedicine-related applications and research. Our aim was to explore a facile way to generate dextran-derived nanoparticles with photoluminescent property for the use in fluorescence imaging of bacteria and cancer cells. Dextran-encapsulated gold nanoclusters (AuNCs@ dextran) were generated through a one-pot reaction by stirring dextrans and aqueous tetrachloroauric acid overnight. The generated AuNCs exhibit bright and green photoluminescence under the illumination of an ultraviolet lamp (lambda(max) = 365 nm), and high cell biocompatibility was found as well. Therefore, the generated AuNCs can be used as fluorescence tracers and nanoprobes. We explored the suitability of AuNCs@ dextran as labeling agents for bacteria, such as Staphylococcus aureus and Escherichia coli. After the bacteria were labeled by AuNCs@ dextran, they became quite visible under a fluorescence microscope. Additionally, we demonstrated that nanocomposites composed of AuNCs@ dextran and silica beads can be readily internalized by cancer cells. The nanocomposites can be readily detected in the cells through their photoluminescence, suggesting possible applications in drug delivery and fluorescence imaging.
Ring oscillator
(2014-06-17)
Ho Ying-Chieh
;
Yang Yu-Sheng
;
Su Chau-Chin
A ring oscillator includes (2N+1) inverting delay circuit cells, and each delay circuit cell has an input port and an output port, where N is an integer larger than zero. Each of these (2N+1) inverting delay circuit cells receives a control voltage, and all of the (2N+1) inverting delay circuit cells are electrically connected with each other in series. Furthermore, the input port of one of the (2N+1) inverting delay circuit cells is electrically connected with the output port of an adjacent delay circuit cell of the (2N+1) inverting delay circuit cells.
Studies on the annealing and antibacterial properties of the silver-embedded aluminum/silica nanospheres
(2014-06-17)
Pan, Ko-Ying
;
Chien, Chia-Hung
;
Pu, Ying-Chih
;
Liu, Chia-Ming
;
Hsu, Yung-Jung
Substantial silver-embedded aluminum/silica nanospheres with uniform diameter and morphology were successfully synthesized by sol-gel technique. After various annealing temperatures, the surface mechanisms of each sample were analyzed using scanning electron microscope, transmission electron microscope, and X-ray photoelectron spectroscopy. The chemical durability examinations and antibacterial tests of each sample were also carried out for the confirmation of its practical usage. Based on the result of the above analyses, the silver-embedded aluminum/silica nanospheres are eligible for fabricating antibacterial utensils.
Immersion lithography apparatus and tank thereof
(2014-06-17)
Hung Kuo-Yung
;
Tseng Fan-Gang
An immersion lithography apparatus including a container, at least a liquid, a platform, a fixture, a roller, a light source, and a filter is provided. The container includes a bottom plate, a plurality of side plates, and a bearing hole penetrated through one of the side plates. The liquid is filled in the container. The platform is immersed in the liquid. The platform includes a pair of axles. The axles are parallel to the bottom plate. One of the axles passes through the bearing hole. The fixture is mounted on the platform for clamping a mask and a wafer. The roller is connected to the axle, passes through the bearing hole, and is operated to rotate the connected axle. The light source generates ultraviolet light to incident on the mask and the wafer. The filter is located between the light source and the fixture.
Toward a new cognitive neuroscience: modeling natural brain dynamics
(2014-06-19)
Gramann, Klaus
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Jung, Tzyy-Ping
;
Ferris, Daniel P.
;
Lin, Chin-Teng
;
Makeig, Scott
DIGITAL-TO-ANALOG CONVERTER (DAC) CIRCUIT AND WEIGHT ERROR ESTIMATION/CALIBRATION METHOD THEREOF
(2014-06-19)
HONG HAO-CHIAO
;
WANG YU-SHIEN
The present invention discloses a DAC circuit and a weight error estimation/calibration method thereof. In the method, an output switching circuit dynamically selects several conversion cells (at least containing know weight conversion cells (KWCC)) as a reference conversion cell group (RCCG) from all conversion cells, and dynamically selects at least one unknown weight conversion cell (UWCC) from all UWCCs. An ADC digitalizes the difference of the output of RCCG and the sum of the outputs of the UWCCs, and inputs the result to a digital controller. The digital controller controls the input of the RCCG according to the output of the ADC to make the output of the RCCG approximate the output of the UWCC. The digital controller uses the outputs of the ADC to work out the actual weights of the UWCCs and stores the actual weights in a calibration memory.
Toward a new cognitive neuroscience: modeling natural brain dynamics
(2014-06-19)
Gramann, Klaus
;
Jung, Tzyy-Ping
;
Ferris, Daniel P.
;
Lin, Chin-Teng
;
Makeig, Scott
MUSIC PLAYING SYSTEM AND MUSIC PLAYING METHOD BASED ON SPEECH EMOTION RECOGNITION
(2014-06-19)
Song Kai-Tai
;
Cervantes Carlos
A music playing system and a music playing method suitable for playing music based on speech emotion recognition are provided. The music playing method includes following steps. A plurality of songs and song emotion coordinates of the songs mapping on an emotion coordinate graph are stored in a first database. Emotion recognition parameters are stored in a second database. A voice data is received and analyzed, and a current emotion coordinate of the voice data mapping on the emotion coordinate graph is obtained according to the second database. The setting of a target emotion coordinate is received. At least one specific song emotion coordinate closest to a cheer-up line connecting the current emotion coordinate and the target emotion coordinate is found. Songs corresponding to aforementioned emotion coordinates are sequentially played.
The influence of emotion on keyboard typing: an experimental study using visual stimuli
(2014-06-20)
Lee, Po-Ming
;
Tsui, Wei-Hsuan
;
Hsiao, Tzu-Chien
;
分子醫學與生物工程研究所
;
資訊工程學系
Background: Emotion recognition technology plays the essential role of enhancement in Human-Computer Interaction (HCI). In recent years, a novel approach for emotion recognition has been reported, which is by keystroke dynamics. This approach can be considered to be rather desirable in HCI because the data used is rather non-intrusive and easy to obtain. However, there were only limited investigations about the phenomenon itself in previous studies. This study aims to examine the source of variance in keystroke typing patterns caused by emotions. Methods: A controlled experiment to collect subjects' keystroke data in different emotional states induced by International Affective Picture System (IAPS) was conducted. Two-way Valence (3) x Arousal (3) ANOVAs were used to examine the collected dataset. Results: The results of the experiment indicate that the effect of emotion is significant (p < .001) in the keystroke duration, keystroke latency, and accuracy rate of the keyboard typing. However, the size of the emotional effect is small, compare to the individual variability. Conclusions: Our findings support the conclusion that the keystroke duration, keystroke latency, and also the accuracy rate of typing, are influenced by emotional states. Notably, the finding about the size of effect suggests that the accuracy rate of the emotion recognition could be further improved if personalized models are utilized. On the other hand, the finding also provides an explanation of why real-world applications which authenticate the identity of users by monitoring keystrokes may not be interfered by the emotional states of users. The experiment was conducted using standard instruments and hence is expected to be highly reproducible.
交大e-News第165期
(2014-06-20)
Secretariat
;
國立交通大學秘書室
The influence of emotion on keyboard typing: an experimental study using visual stimuli
(2014-06-20)
Lee, Po-Ming
;
Tsui, Wei-Hsuan
;
Hsiao, Tzu-Chien
;
分子醫學與生物工程研究所
;
資訊工程學系
Background: Emotion recognition technology plays the essential role of enhancement in Human-Computer Interaction (HCI). In recent years, a novel approach for emotion recognition has been reported, which is by keystroke dynamics. This approach can be considered to be rather desirable in HCI because the data used is rather non-intrusive and easy to obtain. However, there were only limited investigations about the phenomenon itself in previous studies. This study aims to examine the source of variance in keystroke typing patterns caused by emotions. Methods: A controlled experiment to collect subjects\' keystroke data in different emotional states induced by International Affective Picture System (IAPS) was conducted. Two-way Valence (3) x Arousal (3) ANOVAs were used to examine the collected dataset. Results: The results of the experiment indicate that the effect of emotion is significant (p < .001) in the keystroke duration, keystroke latency, and accuracy rate of the keyboard typing. However, the size of the emotional effect is small, compare to the individual variability. Conclusions: Our findings support the conclusion that the keystroke duration, keystroke latency, and also the accuracy rate of typing, are influenced by emotional states. Notably, the finding about the size of effect suggests that the accuracy rate of the emotion recognition could be further improved if personalized models are utilized. On the other hand, the finding also provides an explanation of why real-world applications which authenticate the identity of users by monitoring keystrokes may not be interfered by the emotional states of users. The experiment was conducted using standard instruments and hence is expected to be highly reproducible.
相位調變元件、可切換２Ｄ／３Ｄ的顯示裝置、微透鏡陣列、３Ｄ顯示裝置與背光模組
(2014-06-21)
林怡欣
;
徐旭寬
;
陳政嶸
相位調變元件、可切換2D/3D的顯示裝置、微透鏡陣列、3D顯示裝置與背光模組。相位調變元件包括第一電極板、第二電極板與液晶混合物。第一電極板與第二電極板係可透光的並相對的。液晶混合物包括藍相液晶並設置在第一電極板與第二電極板之間。在操作相位調變元件的過程中，係調控第一電極板與第二電極板之間的偏壓，以對穿過第一電極板與第二電極板之間的液晶混合物的光線產生相位差。
電荷幫浦裝置
(2014-06-21)
邵啟意
;
趙昌博
Spin and phonon anomalies in epitaxial self-assembled CoFe2O4-BaTiO3 multiferroic nanostructures
(2014-06-23)
Tsai, C. Y.
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Cheng, H. M.
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Chen, H. R.
;
Huang, K. F.
;
Tsai, L. N.
Temperature dependent magnetic and phonon anomalies in epitaxial self-assembled CoFe2O4 (CFO) rods embedded in BaTiO3 (BTO) matrix nanostructures were investigated. The temperature dependence of A(1)(2TO) phonon frequency of BTO indicates that the BTO matrix experiences structural transformations. The lattice strain produced during the structural transformations drives spin reorientation in CFO rods, resulting in anomalous changes of magnetization. Through correlating the phonon anomalies with the increase of in-plane spin ordering, we show the spin-phonon coupling induces the softening of A(1g) and A(1)(2TO) phonons. It suggests that spin strongly couples with lattice strain and phonons in this nanostructure. (C) 2014 AIP Publishing LLC.
Spin and phonon anomalies in epitaxial self-assembled CoFe2O4-BaTiO3 multiferroic nanostructures
(2014-06-23)
Tsai, C. Y.
;
Cheng, H. M.
;
Chen, H. R.
;
Huang, K. F.
;
Tsai, L. N.
Temperature dependent magnetic and phonon anomalies in epitaxial self-assembled CoFe2O4 (CFO) rods embedded in BaTiO3 (BTO) matrix nanostructures were investigated. The temperature dependence of A(1)(2TO) phonon frequency of BTO indicates that the BTO matrix experiences structural transformations. The lattice strain produced during the structural transformations drives spin reorientation in CFO rods, resulting in anomalous changes of magnetization. Through correlating the phonon anomalies with the increase of in-plane spin ordering, we show the spin-phonon coupling induces the softening of A(1g) and A(1)(2TO) phonons. It suggests that spin strongly couples with lattice strain and phonons in this nanostructure. (C) 2014 AIP Publishing LLC.
Mechanistic Study of a Switch in the Regioselectivity of Hydroheteroarylation of Styrene Catalyzed by Bimetallic Ni-Al through C-H Activation
(2014-06-23)
Chen, Wen-Ching
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Lai, Ying-Chieh
;
Shih, Wei-Chun
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Yu, Ming-Shiuan
;
Yap, Glenn P. A.
We previously reported a highly efficient protocol for bimetallic Ni-Al-catalyzed hydroheteroarylation of styrene with benzimidazole based on C-H bond activation. We have now delineated the mechanism of this process, providing a rationale for an observed switch in regioselectivity in the presence of the Lewis acid, AlMe3. The present mechanistic study gives insights for the rational development of catalysts that exhibit required linear/branched selectivity.
Universal fluorescent tri-probe ligation equipped with capillary electrophoresis for targeting SMN1 and SMN2 genes in diagnosis of spinal muscular atrophy
(2014-06-23)
Wang, Chun-Chi
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Shih, Chi-Jen
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Jong, Yuh-Jyh
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Wu, Shou-Mei
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生物科技學院
This is the first ligase chain reaction used for diagnosis of spinal muscular atrophy (SMA). Universal fluorescent tri-probe ligation (UFTPL), a novel strategy used for distinguishing the multi-nucleotide alternations at single base, is developed to quantitatively analyze the SMN1/SMN2 genes in diagnosis of SMA. Ligase chain reaction was performed by adding three probes including universal fluorescent probe, connecting probe and recognizing probe to differentiate single nucleotide polymorphisms in UFTPL. Our approach was based on the two UFTPL products of survival motor neuron 1 (SMN1) and SMN2 genes (the difference of 9 mer) and analyzed by capillary electrophoresis (CE). We successfully determined various gene dosages of SMN1 and SMN2 genes in homologous or heterologous subjects. By using the UFTPL-CE method, the SMN1 and SMN2 genes were fully resolved with the resolution of 2.16 +/- 0.37 (n = 3). The r values of SMN1 and SMN2 regression curves over a range of 1-4 copies were above 0.9944. Of the 48 DNA samples, the data of gene dosages were corresponding to that analyzed by conformation sensitive CE and denatured high-performance liquid chromatography (DHPLC). This technique was found to be a good methodology for quantification or determination of the relative genes having multi-nucleotide variants at single base. (C) 2014 Elsevier B.V. All rights reserved.
Switching driving method used for a driving system
(2014-06-24)
Hu Jwu-Sheng
;
Jao Hsien-Tang
The present invention discloses a switching driving method used for a driving system. The driving system transforms any type of waveforms to switching signal array by switching strategy modulation, and transmits to switching circuit. Any type of driving waveforms can be generated through high-speed switching the switching circuit. The waveforms can be generated by operating the switching circuit with the switching strategy. The losses of the switch can be reduced, and the modulation ability of driving signal having several waveforms and multi-channels can be improved.
大華文創會－客家文化與產業的融合與傳承
(2014-06-24)
劉雨婕
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Department of Communication and Technology
;
傳播與科技學系
　在桃園縣八德市一條不起眼的小巷子中，孕育著一個不平凡的夢—大華文創會，一個將客家文化與經濟產業融合的團體，運用社區營造的精神和態度，一步一腳印，踏實地耕耘著這塊即將被遺忘的田畝－—客家傳統文化，希望能將此瑰寶傳承給下一代，讓客家精神永遠留存。
東興古色古香飄出米食香
(2014-06-24)
李怡安
;
Department of Communication and Technology
;
傳播與科技學系
步行於兩道由土製泥磚牆延伸、懷舊並帶著純樸感覺的「文人巷」，視線不經意地被古色古香的舊日式建築吸了過去，雖有在歷史洪流中被時間刻畫出斑駁痕跡，但原木造的質樸以及歷史帶來的神祕感交錯，讓人想探個究竟。