Browsing by Issue Date, starting with "2012-04-01"

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Understanding innovation performance and its antecedents: A socio-cognitive model
(2012-04-01)
Wang, Rong-Tsu
;
Lin, Chieh-Peng
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經營管理研究所
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Institute of Business and Management
Little attention in the previous literature has been paid to understanding employees' factors that drive customer development knowledge and performance from the perspective of social psychology. Drawing on social cognitive theory, this study validates a research model that examines the above issue. In the setting of new product development across high-tech firms in Taiwan, this study postulates that innovation self-efficacy, role conflict, and role ambiguity influence innovation performance directly and indirectly via the mediation of customer knowledge development and innovation outcome expectation. This study contributes to the social science literature by applying social cognitive theory to the rarely explored area of innovation performance and by presenting an operationalization of role stressors (i.e., role ambiguity and role conflict) in the area. Lastly, managerial implications and limitations from the empirical findings are provided. (C) 2012 Elsevier BM. All rights reserved.
Diagnosability of star graphs with missing edges
(2012-04-01)
Chiang, Chieh-Feng
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Hsu, Guo-Huang
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Shih, Lun-Min
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Tan, Jimmy J. M.
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資訊工程學系
In this paper, we study the system diagnosis on an n-dimensional star under the comparison model. Following the concept of local diagnosability [3], the strong local diagnosability property [7] is discussed; this property describes the equivalence of the local diagnosability of a node and its degree. We prove that an n-dimensional star has this property, and it keeps this strong property even if there exist n - 3 missing edges in it. (C) 2011 Elsevier Inc. All rights reserved.
Development of biosensor for serine/threonine kinases
(2012-04-01)
Lee, Jhao-hong
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Yuan, Chiun-Jye
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生物科技學系
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分子醫學與生物工程研究所
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Department of Biological Science and Technology
國片談
(2012-04-01)
陳奕儒
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Department of Communication and Technology
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傳播與科技學系
2008年夏末的某個夜晚，天氣開始略帶一點秋涼，當時剛升上水深火熱的高三，筆者一邊算著數學，一邊聽著收音機播著曲子。每當電台進入廣告或音樂結束的時候，筆者都習慣性切換其他電台來聽，但那時候可能念書念到廢寢忘食，等回神過來，陳為民已經開始用他獨特的聲嗓在主持節目。
一種於太陽能電池裝置內形成透明光捕捉結構的方法
(2012-04-01)
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。
Synchronized oscillations in a mathematical model of segmentation in zebrafish
(2012-04-01)
Liao, Kang-Ling
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Shih, Chih-Wen
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Tseng, Jui-Pin
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應用數學系
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Department of Applied Mathematics
Somitogenesis is a process for the development of somites which are transient, segmental structures that lie along the anterior-posterior axis of vertebrate embryos. The pattern of somites is governed by the segmentation clock and its timing is controlled by the clock genes which undergo synchronous oscillation over adjacent cells in the posterior presomitic mesoderm (PSM). In this paper, we analyze a mathematical model which depicts the kinetics of the zebrafish segmentation clock genes subject to direct autorepression by their own products under time delay, and cell-to-cell interaction through Delta-Notch signalling. Our goal is to elucidate how synchronous oscillations are generated for the cells in the posterior PSM, and how oscillations are arrested for the cells in the anterior PSM. For this system of delayed equations, an iteration technique is employed to derive the global convergence to the synchronous equilibrium, which corresponds to the oscillation-arrested. By applying the delay Hopf bifurcation theory and the center manifold theorem, we derive the criteria for the existence of stable synchronous oscillations for the cells at the tail bud of the PSM. Our analysis provides the basic parameter ranges and delay magnitudes for stable synchronous, asynchronous oscillation and oscillation-arrested. We exhibit how synchronous oscillations are affected by the degradation rates and delays. Extended from the analytic theory, further numerical findings linked to the segmentation process are presented.
為自己發聲　獨立音樂市集
(2012-04-01)
鄭巧琪
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Department of Communication and Technology
;
傳播與科技學系
台灣獨立音樂網站iNDIEVOX與誠品合作，結合創意市集與獨立音樂，召集幾十位獨立音樂人販售自己的作品。別具創意的獨立音樂市集，讓喜愛獨立音樂的樂迷可以知道更多創作人，也讓這些創作人有機會為自己發聲。
傳統戲曲的蛻變　現代意象
(2012-04-01)
林儀
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Department of Communication and Technology
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傳播與科技學系
傳統戲曲的表現形式包含了程式化的生旦淨丑四大角色，及配樂、唱詞、臉譜等元素，經過幾百年的演變，才成為今日我們所見的現代化的京劇，有了貼近觀眾的特殊審美經驗，且蘊含著廣大歷史洪流的痕跡與嘗試突破的新意。
去年夏天　我在六龜
(2012-04-01)
洪欣慈
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Department of Communication and Technology
;
傳播與科技學系
2011年夏天，透過平日課輔的學校主任介紹，我來到了充滿歷史的六龜育幼院。這是一個簡單卻處處充滿愛的地方，牆上、走廊，隨處可見的是小朋友的童年塗鴉及作品，陪伴了許多人成長，也孕育出許多夢想，但09年的八八風災，也讓此地遭受重創。
DEMATEL-based model to improve the performance in a matrix organization
(2012-04-01)
Wang, Wei-Chih
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Lin, Yueh-Hua
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Lin, Chia-Li
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Chung, Chu-Hsuan
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Lee, Ming-Tsung
Carrying out a design project for a high-tech facility requires a large amount of special knowledge in order to deal with the specific requirements from the client. Often the client forms a matrix organization, structured with several interrelated functional and project divisions to dictate the various requirements and needs. However, an ill-defined matrix organization is likely to result in late and inadequate decisions. This in turn may result in a poorly performing design. Identifying those divisions within the organization that perform poorly in the way they provide information for the project is critical. Therefore, this study proposes an innovative model to identify those divisions that may be responsible for the poor performance of the design project. The proposed model integrates the satisfied importance analysis (SIA) and the decision making trial and evaluation laboratory technique (DEMATEL). The SIA evaluates the performance of each division, while the DEMATEL captures the causal relationships among divisions to generate an influence-relations map. The proposed model is applied to a real-world high-tech facility design project in Taiwan to demonstrate the strengths of the model. (C) 2011 Elsevier Ltd. All rights reserved.
NADPH oxidase-derived superoxide Anion-induced apoptosis is mediated via the JNK-dependent activation of NF-kappa B in cardiomyocytes exposed to high glucose
(2012-04-01)
Tsai, Kun-Hsi
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Wang, Wei-Jan
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Lin, Cheng-Wen
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Pai, Peiying
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Lai, Tung-Yuan
Hyperglycemia-induced generation of reactive oxygen species (ROS) can lead to cardiomyocyte apoptosis and cardiac dysfunction. However, the mechanism by which high glucose causes cardiomyocyte apoptosis is not clear. In this study, we investigated the signaling pathways involved in NADPH oxidase-derived ROS-induced apoptosis in cardiomyocytes under hyperglycemic conditions. H9c2 cells were treated with 5.5 or 33 mM glucose for 36?h. We found that 33 mM glucose resulted in a time-dependent increase in ROS generation as well as a time-dependent increase in protein expression of p22phox, p47phox, gp91phox, phosphorylated I?B, c-Jun N-terminal kinase (JNK) and p38, as well as the nuclear translocation of NF-kB. Treatment with apocynin or diphenylene iodonium (DPI), NADPH oxidase inhibitors, resulted in reduced expression of p22phox, p47phox, gp91phox, phosphorylated I?B, c-Jun N-terminal kinase (JNK) and p38. In addition, treatment with JNK and NF-kB siRNAs blocked the activity of caspase-3. Furthermore, treatment with JNK, but not p38, siRNA inhibited the glucose-induced activation of NF-?B. Similar results were obtained in neonatal cardiomyocytes exposed to high glucose concentrations. Therefore, we propose that NADPH oxidase-derived ROS-induced apoptosis is mediated via the JNK-dependent activation of NF-B in cardiomyocytes exposed to high glucose. J. Cell. Physiol. 227: 1347-1357, 2012. (C) 2011 Wiley Periodicals, Inc.
Enhancement of PZT embedded swing arm actuator using integrated read/write performance and actuation
(2012-04-01)
Lin, Yu-Cheng
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Chou, Po-Chien
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Cheng, Stone
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機械工程學系
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Department of Mechanical Engineering
The current technological challenges associated with the rotary-type seesaw arm actuator for small-form-factor (SFF) disk drives are the small skew focusing, which causes off-axis aberrations and reduces optical quality. This article develops a novel design for a seesaw arm actuator and suspension assembly that is based on a micro-PZT actuator to position pickup head. Dual-stage actuation relaxes the dynamic requirement on the focusing stroke. The proposed actuator with a tilt-compensation mechanism uses a PZT bender to drive pickup head focusing. This combined system, optical module and dual stage actuator, is effectively self-aligned the optical axis for read/write performance in both experiment and simulation result. Finite element modeling and dynamic measurements reveal significant improvements in the actuator bandwidth with and without micro-PZT actuator compensation.
Adaptive radio maps for pattern-matching localization via inter-beacon co-calibration
(2012-04-01)
Lo, Chi-Chung
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Hsu, Lan-Yin
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Tseng, Yu-Chee
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資訊工程學系
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Department of Computer Science
A growing number of location-based applications are based on indoor positioning, and much of the research effort in this field has focused on the pattern-matching approach. This approach relies on comparing a pre-trained database (or radio map) with the received signal strength (RSS) of a mobile device. However, such methods are highly sensitive to environmental dynamics. A number of solutions based on added anchor points have been proposed to overcome this problem. This paper proposes an approach using existing beacons to measure the RSS from other beacons as a reference, which we call inter-beacon measurement, for the calibration of radio maps on the fly. This approach is feasible because most current beacons (such as Wi-Fi and ZigBee stations) have both transmitting and receiving capabilities. This approach would relieve the need for additional anchor points that deal with environmental dynamics. Simulation and experimental results are presented to verify our claims. (C) 2012 Elsevier B.V. All rights reserved.
以系統動態觀點預測使用者對於廢資訊用品回收意願與行為
(2012-04-01)
王貞淑
;
周棟祥
;
鍾典村
;
Chen-Shu Wang
;
Tung-Hsiang Chou
資訊產品推陳出新讓使用者的生活日趨便利，但是也縮短了資訊產品生命週期，讓廢資訊產品的管理問題（e-Waste Management）逐漸浮現。不當的e-Waste處置將造成難以復原的環境污染，目前大部份的IT產品使用者是將不知道如何處置的e-Waste屯積起來。也正因為e-Waste回收大多是由終端使用者發起，導致e-Waste管理議題充滿了不確定性，探討使用者對e-Waste的回收意願與行為是極待解決的問題。本研究參照台灣地區現行的回收機制與回收補貼政策，以系統動態模擬方法建構出使用者對於e-Waste回收意願的行為預測模擬模型（proposed simulationmodel；PSM），並進行相關動態假說驗證，包括：回收政策效能、新興資訊科技影響以及不同回收管道的探討。PSM再以台灣地區1997年到2007年實際個人電腦回收量進行模型的驗證與測試。由模擬結果顯示本研究所提出之PSM預測模型可達95%的正確性，因此三項動態假說均獲支持。也發現新興資訊技術的推出會縮短資訊產品的生命週期，甚至達一倍以上。最後由模擬結果顯示，不同的回收管道的確存在不同的延遲時間（電腦購買至送出回收的時間差），例如：學校單位（5年）與企業單位（2－3年）的時間差將近一倍。本研究所提出的PSM模型能夠全面性的了解台灣電子產業供應鏈，兼顧正向物流與逆向物流的發展。也能夠讓相關行政單位與電子產品製造商在實施e-Waste回收政策前先行模擬可能效果，做為策略施行前的參考依據。
汪士傑　旗隊經驗甘苦談
(2012-04-01)
吳孟芯
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Department of Communication and Technology
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傳播與科技學系
「有誰平常會不斷練習壓腳尖？誰平常會用到四肢神經末梢的力量？」汪士傑幽默地說。汪士傑擁有比起其他人更顯得柔軟易伸展的身軀，但這都是來自後天努力、來自他特殊的旗隊經驗。
Social influence on the use of Clinical Decision Support Systems: Revisiting the Unified Theory of Acceptance and Use of Technology by the fuzzy DEMATEL technique
(2012-04-01)
Jeng, Don Jyh-Fu
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Tzeng, Gwo-Hshiung
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科技管理研究所
;
Institute of Management of Technology
The aim of study is to examine whether social influence affects medical professionals' behavioral intention to use while introducing a new Clinical Decision Support System (CDSS). The series of Technology Acceptance Models (TAMs) have been widely applied to examine new technology acceptance by scholars; nevertheless, these models omit system diversity and the user's profession. On the other hand, causal analysis greatly affects the efficiency of decision-making, and it is usually analyzed by Structural Equation Modeling (SEM); however, the method is often misapplied. This research applies the Decision-Making Trial and Evaluation Laboratory (DEMATEL) technique to explore the causal relationship between the significant Unified Theory of Acceptance and Use of Technology (UTAUT) variables. Fuzzy concept is applied to illustrate human vague judgment. It is significant that, in contrary with UTAUT, this study found that social influence does not matter in the behavioral intention to use the CDSS for medical professionals. (c) 2011 Elsevier Ltd. All rights reserved.
Dynamic Sampling Rate Adjustment for Compressive Spectrum Sensing over Cognitive Radio Network
(2012-04)
Huang, Ching-Chun
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Wang, Li-Chun
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電子工程學系及電子研究所
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Department of Electronics Engineering and Institute of Electronics
In this paper, a dynamic sampling rate adjustment scheme is proposed for compressive spectrum sensing in cognitive radio network. Nowadays, compressive sensing (CS) has been proposed with a revolutionary idea to sense the sparse spectrum by using a lower sampling rate. However, many methods for compressive spectrum sensing assume that the sparse level is static and a fixed compressive sampling rate is applied over time. To adapt to time-varying sparse levels and adjust the sampling rate, we proposed to model sparse levels as a dynamic system and treat the dynamic rate selection as a tracking problem. By introducing the Sequential Monte Carlo (SMC) algorithm into a distributed compressive spectrum sensing framework, we could not only track the optimal sampling rate but determine the unoccupied channels accurately in a unified method.
Vortex-Antivortex Annihilation and Flux Turbulence in Layered Type-II Superconductors
(2012-04-01)
Dvash, E. E.
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Shapiro, I.
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Rosenstein, B.
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Logoboy, N.
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Shapiro, B. Y.
New mechanism of turbulence instability of standing flux-antiflux front in layered superconductors is presented. We describe two assisting mechanisms destabilizing the standing vortex-antivortex front. There are anisotropy of the layered superconductors and the heat, released by the vortex-antivortex annihilation. We present the conditions of the front stability for various anisotropy and heating parameters. We predict that heat released by the vortex-antivortex annihilations enhances the turbulence instability in superconductors with small anisotropy. The characteristic size of the unstable pattern is estimated. The results are in a good agreement with recent experiments.
Forecasting the short-term metro passenger flow with empirical mode decomposition and neural networks
(2012-04-01)
Wei, Yu
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Chen, Mu-Chen
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運輸與物流管理系註：原交通所+運管所
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Department of Transportation and Logistics Management
Short-term passenger flow forecasting is a vital component of transportation systems. The forecasting results can be applied to support transportation system management such as operation planning, and station passenger crowd regulation planning. In this paper, a hybrid EMD-BPN forecasting approach which combines empirical mode decomposition (EMD) and back-propagation neural networks (BPN) is developed to predict the short-term passenger flow in metro systems. There are three stages in the EMD-BPN forecasting approach. The first stage (EMD Stage) decomposes the short-term passenger flow series data into a number of intrinsic mode function (IMF) components. The second stage (Component Identification Stage) identifies the meaningful IMFs as inputs for BPN. The third stage (BPN Stage) applies BPN to perform the passenger flow forecasting. The historical passenger flow data, the extracted EMD components and temporal factors (i.e., the day of the week, the time period of the day, and weekday or weekend) are taken as inputs in the third stage. The experimental results indicate that the proposed hybrid EMD-BPN approach performs well and stably in forecasting the short-term metro passenger flow. (C) 2011 Elsevier Ltd. All rights reserved.
Polymer as the protecting passivaton layer in fabricating suspended SCS structures in both anisotropic and isotropic etching
(2012-04-01)
Lin, Yu-Hsin
;
Hsu, Wensyang
;
機械工程學系
;
Department of Mechanical Engineering
This paper presents a rapid bulk micromachining process named polymer passivation layer for suspended structures etching by using a polymer as a protecting passivation layer at both anisotropic and isotropic etching steps. Without using silicon-dioxide (SiO2) deposition or boron doping as a protection layer at the releasing step, the proposed method can fabricate suspended single-crystal silicon structures in an inductively coupled plasma reactive ion etching chamber directly, which would simplify the fabrication process and save fabrication time. The current study systematically investigates critical fabrication parameters to verify the feasibility of the proposed method, and discusses the polymer passivation time and removal time of a polymer at the base of a substrate at four different opening gaps of 5, 10, 30 and 50 mu m with the 30 mu m deep trench to establish suitable recipes for fabricating suspended microstructures. It is also shown that the proposed method can fabricate not only the suspended microstructures with the same thickness, but also suspended microstructures with different thicknesses, as well as in sub-micro scale.