Browsing by Issue Date, starting with "2014-08-01"

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GLOBAL DYNAMICS FOR TWO-SPECIES COMPETITION IN PATCHY ENVIRONMENT
(2014-08-01)
Lin, Kuang-Hui
;
Lou, Yuan
;
Shih, Chih-Wen
;
Tsai, Tze-Hung
;
應用數學系
An ODE system modeling the competition between two species in a two-patch environment is studied. Both species move between the patches with the same dispersal rate. It is shown that the species with larger birth rates in both patches drives the other species to extinction, regardless of the dispersal rate. The more interesting case is when both species have the same average birth rate but each species has larger birth rate in one patch. It has previously been conjectured by Gourley and Kuang that the species that can concentrate its birth in a single patch wins if the diffusion rate is large enough, and two species will coexist if the diffusion rate is small. We solve these two conjectures by applying the monotone dynamics theory, incorporated with a complete characterization of the positive equilibrium and a thorough analysis on the stability of the semi-trivial equilibria with respect to the dispersal rate. Our result on the winning strategy for sufficiently large dispersal rate might explain the group breeding behavior that is observed in some animals under certain ecological conditions.
Estimation of the Moments of the Residence Time and First Passage Time from Experimentally Measurable Permeation Parameters via a New Formulation of the Transmission Matrix
(2014-08-01)
Chen, Jenn-Shing
;
Yeh, Kwei-Tin
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Chang, Wen-Yih
;
Baird, James K.
;
應用化學系
Siegel\'s analysis on membrane transport in the Laplace domain [J. Phys. Chem. 95 (1991) 2556] in terms of transmission matrix, T(s), has been extended to a more useful formulation. This is achieved by combining uses of the matrix transport equations appropriate for void initial condition, or for saturated equilibrium, or of Dirac delta functional type and the theorem det[T(s)]=1. This formulation enables us to expand T(s) in power series of the Laplace variable, s, with the expansion coefficients as the algebraic functions of the experimentally measurable transport parameters. Utility of the formulation is illustrated in the estimation of the experimentally inaccessible time moments for the first passage or residence times. It was also applied to the percutaneous drug delivery to obtain from the experimental data. The higher moments of the time lag or time lead using a graphic method.
一種於太陽能電池裝置內形成透明光捕捉結構的方法
(2014-08-01)
蔡娟娟
;
徐振航
本發明揭露一種於太陽能電池裝置內形成透明光捕捉結構的方法，首先形成一層或多層透明薄膜於透明基板上，並藉由製程方法形成具有光捕捉層結構，接著再形成透明導電氧化物層於該光捕捉層上，續形成薄膜太陽能電池單元及薄透明導電氧化層，最後形成金屬電極層於薄透明導電氧化層上，藉以完成該於太陽能電池裝置內形成透明光捕捉結構的方法。
All-Color Plasmonic Nanolasers with Ultralow Thresholds: Autotuning Mechanism for Single-Mode Lasing
(2014-08-01)
Lu, Yu-Jung
;
Wang, Chun-Yuan
;
Kim, Jisun
;
Chen, Hung-Ying
;
Lu, Ming-Yen
We report on the first demonstration of broadband tunable, single-mode plasmonic nanolasers (spasers) emitting in the full visible spectrum. These nanolasers are based on a single metal oxide semiconductor nanostructure platform comprising of InGaN/GaN semiconductor nanorods supported on an Al2O3-capped epitaxial Ag film. In particular, all-color lasing in subdiffraction plasmonic resonators is achieved via a novel mechanism based on a property of weak size dependence inherent in spasers. Moreover, we have successfully reduced the continuous-wave (CW) lasing thresholds to ultrasmall values for all three primary colors and have clearly demonstrated the possibility of "thresholdless" lasing for the blue plasmonic nanolaser.
腹式發聲辨識系統與方法
(2014-08-01)
蕭子健
;
崔維軒
本發明揭露一種腹式發聲辨識系統及方法，其係用於判斷一使用者發聲之品質，其先使用一呼吸感測器與一麥克風，同步擷取發聲時之一聲音訊號和胸部與腹部之一胸部呼吸訊號及一腹部呼吸訊號，再對該聲音訊號、該胸部呼吸訊號、及該腹部呼吸訊號執行西爾伯特黃轉換分析，之後，評估發聲時之腹式換氣是否正確，並判斷發聲方式是否正確。
Applying market profile theory to forecast Taiwan Index Futures market
(2014-08-01)
Chen, Chiu-Chin
;
Kuo, Yi-Chun
;
Huang, Chien-Hua
;
Chen, An-Pin
;
資訊管理與財務金融系註：原資管所+財金所
This research applies a market profile to establish an indicator to classify the correlation between the variation in price and value with the stock trends. The indicator and technical index are neural network architecture parameters that assist to extrapolate the market logic and knowledge rules that influence the TAIEX futures market structure via an integral assessment of physical quantities. To implement the theory of market profile on neural network architecture, this study proposes qualitative and quantitative methods to compute a market profile indicator. In addition, the indicator considers the variation and relevance between long-term and short-term trends by incorporating the long-term and short-term change in market in its calculation. An assessment of forecasting performance on different calculation approaches of market profile indicator and technical analysis is conducted to differentiate their accuracies and profitability. The experimental results show the qualitative market profile indicator outperforms the quantitative approach in a short-term forecast period. In contrast, the quantitative market profile indicator has a better trend-predicting ability, thus it is more effective in the long-term forecast period. The integration of market profile and technical analysis surpasses technical analysis as a neural network architecture parameter by effectively improving forecasting performance and profitability. (C) 2014 Elsevier Ltd. All rights reserved.
Effect of zinc on anammox activity and performance of simultaneous partial nitrification, anammox and denitrification (SNAD) process
(2014-08-01)
Daverey, Achlesh
;
Chen, Yi-Chian
;
Sung, Shihwu
;
Lin, Jih-Gaw
;
環境工程研究所
In the present study, short-term effects of zinc on anammox activities and long-term effect of zinc on the performance of simultaneous partial nitrification, anammox and denitrification (SNAD) process were evaluated. The anammox activity decreased with increasing zinc concentration and exposure time in short-term tests. The IC50 value of zinc was found to be 6.9 mg/L. However, the presence of zinc (<10 mg/L) in wastewater stimulated the microbial activities and nitrogen removal performance of SNAD process in sequencing batch biofilm reactor (SBBR). At first, inhibition of SNAD process was observed when influent zinc concentration increased to 20 mg/L. The system recovered immediately, suggesting the acclimatization of microbial communities of SNAD process. The results showed that SBBR was well acclimatized under high zinc concentration (50-100 mg/L) achieving 98% NH4+-N, 96% TN and 87% COD removal efficiencies. (C) 2014 Elsevier Ltd. All rights reserved.
The Association of Taste with Change in Adiposity-Related Health Measures
(2014-08-01)
Fischer, Mary E.
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Cruickshanks, Karen J.
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Schubert, Carla R.
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Pinto, Alex
;
Huang, Guan-Hua
The relationship between taste-intensity patterns and 5-year change in adiposity-related health measures was determined. Participants were members of the Beaver Dam Offspring Study, a study of the adult children of participants in the population-based Epidemiology of Hearing Loss Study. There were 1,918 participants (mean baseline age=48.8 years; range=22 to 84 years) with baseline taste (2005 to 2008) and follow-up (2010 to 2013) data Outcomes included 5-year change in body mass index, waist circumference, blood pressure, non high-density lipoprotein cholesterol, and glycosylated hemoglobin A1c, and hedonic ratings of specific foods. Cluster analysis with Ward\'s minimum variance method identified the following 5 patterns of the suprathreshold taste intensities of salt, sweet, sour, and bitter: salt and sweet intensities slightly above population averages, average sour and bitter intensities; salt, sour, and bitter intensities above population average, average sweet intensity; salt, sour, and bitter intensities above population average, sweet intensity substantially above average; all intensities below population averages; and all intensities close to population average. The General Linear Model procedure was used for testing cluster differences in the outcomes. With covariate adjustment, the group with all intensities close to population averages had a significantly lower average increase in body mass index compared with the group with above-average intensities for salt, sour, and bitter (+0.4 vs +0.9), and in glycosylated hemoglobin A1 c compared with the group with above-average intensities for all tastes (+0.20% vs +0.34%). Clusters differed in the hedonics of foods representing sweetness and saltiness. The study\'s findings provide evidence that perceived taste intensity might be related to changes in adiposity-related health.
National Datum Uncertainty due to Reference Frame Transformation: Case Study for the Geodetic Datum of Taiwan
(2014-08-01)
Chiu, Yuan-Hung
;
Shih, Peter Tian-Yuan
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土木工程學系
;
Department of Civil Engineering
With the advent of global navigation satellite systems (GNSSs), many national geodetic datums have been established with modern technology and referenced to a specific epoch of the international terrestrial reference frame (ITRF) definition. Following the static datum concept, the datum remains unchanged after its publication, which consequently creates problems in datum maintenance. In the recent update of TWD97, the national datum presently used in Taiwan, the resurvey coordinates are transformed back to the original frame but expressed in a recent epoch. In this study, the uncertainties resulting from the transformation between ITRF definitions in the region of Taiwan were investigated. Based on error propagation, a standard error of +/- 7 cm was estimated due to the transformation of the TWD97 coordinates between ITRF2005(2010.0) and ITRF94(2010.0). The uncertainties propagated from transformation parameters are more significant than those from station coordinates and velocities, and the uncertainty expands with the time interval. The SD is +/- 1.1 cm for the transformation between ITRF2005 and ITRF2000. Considering that the uncertainty between later definitions is much smaller than transforming to ITRF94, it may be preferable to replace the ITRF94 with a modern ITRF definition, at least ITRF2000, for the next TWD97 datum maintenance. (C) 2014 American Society of Civil Engineers.
The complete mitochondrial genome of the big-eye thresher shark, Alopias superciliosus (Chondrichthyes, Alopiidae)
(2014-08-01)
Chang, Chia-Hao
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Shao, Kwang-Tsao
;
Lin, Yeong-Shin
;
Ho, Hsuan-Ching
;
Liao, Yun-Chih
The complete mitochondrial genome of the big-eye thresher shark was sequenced using a polymerase chain reaction (PCR)-based method. The total length of mitochondrial DNA is 16,719 bp and includes 13 protein-coding genes, 2 ribosomal RNA, 22 transfer RNA genes, 1 replication origin region and 1 control region. The mitochondrial gene arrangement of the big-eye thresher shark is the same as the one observed in the most vertebrates. Base composition of the genome is A (31.8%), T (28.9%), C (25.8%) and G (13.5%).
Nanofabrication of uniform and stabilizer-free self-assembled platinum monolayers as counter electrodes for dye-sensitized solar cells
(2014-08-01)
Li, Lu-Lin
;
Wu, Hsin-Hui
;
Tsai, Chia-Hung
;
Diau, Eric Wei-Guang
;
交大名義發表
We report a two-step dip-coating approach for the fabrication of self-assembled monolayers of platinum nanocrystals (SAM-Pt) with a particle size of similar to 3 nm and that are uniformly deposited on a transparent conducting oxide (TCO) surface to serve as a counter electrode (CE) for dye-sensitized solar cells (DSSCs). In the first step, we prepared a polyol solution containing H2PtCl6 and ethylene glycol at 110 degrees C, in which the reduction kinetics were controlled by adding various proportions of NaOH. In the second step, we immersed a thiol-modified TCO substrate into the polyol solution with monodispersed Pt nanoparticles prepared at pH 3.7 at approximately 295 K to complete the nanofabrication. The DSSC devices using Z907 dye as a photosensitizer and the CE prepared using this SAM-Pt approach attained notable photovoltaic performance (eta = 9.2%) comparable with those fabricated using a conventional thermal decomposition method (eta = 9.1%) or a cyclic electrodeposition method (eta = 9.3%) under the same experimental conditions. We emphasize that the SAM-Pt films feature a clean surface, uniform morphology, narrow size distribution, small Pt loading and great catalytic activity; the present approach is hence not only suitable for DSSCs but also applicable for many other energy-related applications that require platinum as an efficient catalyst.
螢光材料及使用其之發光裝置
(2014-08-01)
陳登銘
;
郭德文
本發明係有關於一種新穎螢光材料，其化學式如下：(A1-xMx)8D12O24S2，其中，x、A、M及D定義如說明書中所述。此外，本發明更提供使用上述新穎螢光材料之發光裝置。
含氫氧化四甲基銨及氨氮之廢液的處理方法及其處理裝置
(2014-08-01)
黎德明
;
江明桂
;
陳金得
;
宋耿全
;
藍茜茹
一種含氫氧化四甲基銨(TMAH)及氨氮之廢液的處理方法，包括：在單一反應槽內導入不含TMAH之含氨氮溶液，於反應槽內利用微生物對含氨氮溶液進行脫氮作用，前述微生物包含硝化菌及自營性脫硝菌，且反應槽內部之溶氧濃度為0.1-0.5 mg/L，pH值介於7-8；當脫氮效率穩定後，於該含氨氮溶液中摻入TMAH，TMAH之添加濃度低於60 mg/L；當脫氮效率再次穩定後，漸進地調高TMAH添加濃度若干次。藉此，TMAH對自營性脫硝菌的抑制性就會得到大幅改善，並可實現在單一反應槽內同時有效處理TMAH及氨氮之預期外功效。
Optics and Photonics of Taiwan International Conference: Introduction by the feature editors
(2014-08-01)
Fuh, Andy Y. -G.
;
Khoo, Iam Choon
;
Lin, Tsung-Hsien
;
Huang, Yi-Pai
;
Chien, Liang-Chy
This Applied Optics feature issue is dedicated to the Optics and Photonics of Taiwan International Conference (OPTIC 2013), held 5-7 December 2013 in Zhongli (Chung-Li), Taiwan. The conference takes place every year at different universities in Taiwan. This feature issue is particularly focused on a broad range of topics covered under subconference VII (Display Technology), and also includes topics pertaining to display technology under other subconferences. In addition, the feature issue is open to all other researchers in the related area. (C) 2014 Optical Society of America
Design and realization of a high resolution (640 x 480) SWIR image acquisition system
(2014-08-01)
Chen, Jian-Ruei
;
Chao, Paul C. -P.
;
Tsai, Che-Hung
;
Chen, Wei-Dar
;
電機工程學系
A new image acquisition system module for extracting signals of high-resolution short wave infrared (SWIR) from a focal plane array (FPA) is presented in this study. The short wave infrared (SWIR-with wavelength about 900-1,700 nm) images have been proven its unique values in many applications such as military, semiconductor inspection and aviation security. The designs for the SWIR data acquisition system module consists of digitization and acquisition of FPA signals, design of synchronous dynamic random access memory controller and real-time image signal transformation and display. Three major steps involved towards a successful SWIR module-(1) Selection of hardware ICs according to specification for the FPA; (2) Design of a timing generator for the image acquisition system to control FPA and other ICs by Verilog HDL programming; (3) Integrate the individual modules on a PCB. The SWIR image output signals are successfully generated in the format of National Television System Committee (NSTC), which can be displayed on a common NTSC monitor, flat panel displays with an AV input terminal or a CRT display in a favorable speed of frame rate at 30 per second.
Modeling team knowledge sharing and team flexibility: The role of within-team competition
(2014-08-01)
He, Hongwei
;
Baruch, Yehuda
;
Lin, Chieh-Peng
;
交大名義發表
;
經營管理研究所
This study examines the role of within-team competition (i.e. team hypercompetition and team development competition) in a team process. We developed and tested a model that associates team collectivism as the antecedent of within-team competition, and knowledge sharing and team flexibility as the outcomes. The model was empirically tested with data from 141 knowledge-intensive teams. The empirical findings showed that team collectivism had a positive relationship with team development competition and a negative relationship with team hypercompetition. Regarding the outcomes, team development competition and team hypercompetition had an indirect relationship with knowledge sharing and team flexibility through team empowerment. We offer a number of original contributions to the team effectiveness literature, especially by showing that team hypercompetition and team development competition have different impacts on team knowledge sharing and team flexibility.
Computations of the Signal-to-Noise Ratio for Medical X-Ray Imagers
(2014-08-01)
Lo, Yu-Chen
;
Huang, Kuan-Chieh
;
Yang, Kei-Hsiung
;
光電系統研究所
;
影像與生醫光電研究所
If the signal in a medical X-ray imaging detector is formed by integrating the scintillation (or electrical) pulses, rather than by counting them, the signal-to-noise ratio is reduced by a factor which depends on the pulse height distribution. Formulas are expanded from Swank\'s publication to derive the signal-to-noise ratio for any given optical or electrical pulse-size distribution. A new quantity called noise-equivalent absorption is defined which bears a simple relationship to the signal-to-noise ratio of integrated X-ray imaging as the quantum absorption to the signal-to-noise ratio of photon-counting X-ray imaging.
Community-Acquired Pneumonia in Pediatric Patients With Acute Neuromuscular Respiratory Failure: A Microbiologic Perspective
(2014-08-01)
Hsu, Jong-Hau
;
Chen, Tai-Heng
;
Jong, Yuh-Jyh
;
生物科技學系
;
Department of Biological Science and Technology
Motional Resistance Issue of TSV-Based Resonator Device and Its Improvement With a Concave Cu TSV Structural Design
(2014-08-01)
Shih, Jian-Yu
;
Chen, Yen-Chi
;
Chiu, Chih-Hung
;
Chen, Kuan-Neng
;
交大名義發表
Motional resistance of TSV-based resonator devices with 3D integration techniques is investigated at the operating oscillating mode. Even with well-developed TSV and device fabrication, the motional resistance issue of the TSV-based resonator device is found due to the poor connected Ag paste. The corresponding solution is demonstrated by a modified concave Cu TSVs structure. This modified concave Cu TSV design shows the excellent device characteristics and no visible gaps between the Cu TSVs and resonator devices to insure a good electrical connection.
The Butterfly-Shaped Feedback Loop in Networked Control Systems for the Unknown Delay Compensation
(2014-08-01)
Lai, Chien-Liang
;
Hsu, Pau-Lo
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
Available model-based networked control system (NCS) design approaches are basically formulated from the known system model and the information of the networked-induced delay time. Because the delay in remote control systems is significant and time-varied as commercial networks involved, available model-based NCS design approaches may thus become impractical. The increase of time delay due to the limited communication bandwidth usually induces data dropout to make NCS design even more difficult. In this paper, the scheme of the perfect delay compensation (PDC) is proposed by introducing the butterfly-shaped inner feedback loop in NCS to deal with the unknown network-induced time delay. Furthermore, analytical results indicate that the controller obtained in general control systems can be directly implemented on NCS with the proposed PDC scheme. Both simulation and experimental results were successfully carried out on an ac servo motor at a distance of 15 km through Ethernet to maintain a stable remote control system.