Browsing by Issue Date, starting with "2017-05-01"

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Broadband CMOS Schottky-Diode Star Mixer Using Coupled-CPW Marchand Dual-Baluns
(2017-05-01)
Hsiao, Yu-Chih
;
Meng, Chinchun
;
Peng, Yong-Hao
;
電機工程學系
;
Department of Electrical and Computer Engineering
A broadband CMOS Marchand dual-balun using stacked broadside couplers for low odd-mode impedance with surrounded ground planes for high even-mode impedance is employed to achieve a high coupling coefficient needed for a Marchand dual-balun. The demonstrated Marchand dual-balun using 0.18-mu m CMOS technology is designed at 30-GHz center frequency with an insertion loss of 11.5-and 10-dB input return loss bandwidth of over 120%. The bandwidth of 1-dB amplitude imbalance and 10 degrees phase difference are over 100%. A broadband CMOS Schottky-diode star mixer is implemented with two Marchand dual-baluns at RF and local oscillator (LO) ports. As a result, the Schottky-diode star mixer shows conversion loss of 14 dB, LO-to-RF isolation of 26 dB, LO-to-IF isolation of 45 dB, and RF-to-IF isolation of 42 dB within 27-GHz operating bandwidth, respectively.
中英文客家研究相關學位論文書目彙編： 2015-2016年
(國立交通大學客家文化學院, 2017-05)
張珈瑜
;
Chia-yu Chang
本書目共收入510篇學位論文，包括 20篇博士論文 (台灣11篇、中國 4篇、美國4篇、新加坡1篇)、490篇碩士論文。
Effect of charge quantity on conduction mechanism of high-and low-resistance states during forming process in a one-transistor-one-resistor resistance random access memory
(2017-05-01)
Wu, Cheng-Hsien
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Chang, Ting-Chang
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Tsai, Tsung-Ming
;
Chang, Kuan-Chang
;
Chu, Tian-Jian
The forming process is a necessary and irreversible process to activate the resistance switching behavior in a resistance random access memory (RRAM) device. However, during the forming process, an overshoot current leads to device damage and causes inferior resistance switching characteristics; consequently, the process is considered to be a key factor in device degradation. In this paper, we find that a discontinuous conduction path can be formed by a pulse forming process such that the operation current can be reduced. We further investigate how the charge quantity during the forming process affects the carrier conduction mechanism of HRS, with all experiments and results demonstrated on onetransistor- one-resistor (1T1R) devices. (C) 2017 The Japan Society of Applied Physics
A symmetric structure-preserving FQR algorithm for linear response eigenvalue problems
(2017-05-01)
Li, Tiexiang
;
Li, Ren-Cang
;
Lin, Wen-Wei
;
應用數學系
;
Department of Applied Mathematics
In this paper, we present an efficient PQR algorithm for solving the linear response eigenvalue problem H-x = lambda(x) , where H is Pi(-)-symmetric with respect to Gamma(0) = diag(I-n,-I-n). Based on newly introduced Gamma-orthogonal transformations, the PQR algorithm preserves the Pi(-)-symmetric structure of H throughout the whole process, and thus guarantees the computed eigenvalues to appear pairwise (lambda, -lambda) as they should. With the help of a newly established implicit Gamma-orthogonality theorem, we incorporate the implicit multi-shift technique to accelerate the convergence of the Gamma QR algorithm. Numerical experiments are given to show the effectiveness of the algorithm.(C) 2017 Elsevier Inc. All rights reserved.
Epitaxial growth of semipolar InN(10(1)over-tilde3) on LaAlO3 substrate: Epitaxial relationship analysis
(2017-05-01)
Chen, Wei-Chun
;
Kuo, Shou-Yi
;
Tian, Jr. -Sheng
;
Wang, Wei-Lin
;
Lai, Fang-I
Epitaxial semipolar InN(10 (1) over tilde3) crystals were grown on a LaAlO3(112) substrate using radio frequency plasma-assisted molecular beam epitaxy without any interlayer. The lattice mismatch between InN and LaAlO3 was estimated to be % 7.75% along the [1 (2) over tilde 10](InN) direction and 0.2% along the [(3) over tilde 032](InN) direction. The InN film is epitaxic with the LaAlO3 substrate, with orientation relationships between InN(10 (1) over tilde3) parallel to LaAlO3(112) and [1 (2) over tilde 10](InN) parallel to [11 (1) over tilde](LAO). InN grown on LaAlO3(112) appears (10 (1) over tilde3) plane orientated, with two types of domains. Semipolar InN(10 (1) over tilde3) layers can be grown at 510 degrees C and show X-ray rocking curve FWHMs of 1830 and 1408 arcsec for InN(0002) and InN(10 (1) over tilde3), respectively. However, InN grown at 510 degrees C has the highest peak intensity and the narrowest FWHM of the prepared samples, indicating high-quality crystal growth. (C) 2017 The Japan Society of Applied Physics
評論：林正慧《臺灣客家的形塑歷程：清代至戰後的追索》
(國立交通大學客家文化學院, 2017-05)
羅烈師
;
Lieh-shih Lo
林正慧《臺灣客家的形塑歷程─清代至戰後的追索》一書總成十餘年來「臺灣客家之形成」這一主題的研究成果，以歷時性敘述，並在族群理論方面綰合根基論與情境論企圖下，主張戰前臺灣客方言人群的認同仍屬單純的方言認同，戰後客家迎來華南已有的中原客家論述，並添加中華民族主義的色彩，是臺灣客家第一次有族群建構傾向的形塑；至1980年代末期的第二次有族群建構傾向的形塑，其訴求轉為臺灣的在地經驗。本評論認為本書重大貢獻在細膩的歷史學考察，唯此一結論涉及族群形成前的「文化共性」（例如語言認同）的內涵與本質是什麼？又是在何種過程形成的？它以何種面貌影響族群論述？而關於這一點，各有思維典範的人類學、社會學與歷史學的研究者尚在持續討論中。
An Improved EEHEMT RF Noise Model for 0.25 mu m InGaP pHEMT Transistor Using Verilog-A Language
(2017-05-01)
Peng, An-Sam
;
Wu, Lin-Kun
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電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
In this paper, an accurate experimental noise model to improve the EEHEMT nonlinear model using the Verilog-A language in Agilent ADS is presented for the first time. The present EEHEMT model adopts channel noise to model the noise behavior of pseudomorphic high electron mobility transistor (pHEMT). To enhance the accuracy of the EEHEMT noise model, we add two extra noise sources: gate shot noise and induced gate noise current. Here we demonstrate the power spectral density of the channel noise S-id and gate noise S-ig versus gate-source voltage for 0.25 mu m pHEMT devices. Additionally, the related noise source parameters, i.e., P, R, and C are presented. Finally, we compare four noise parameters between the simulation and model, and the agreement between the measurement and simulation results shows that this proposed approach is dependable and accurate.
Quality of Radiomic Features in Glioblastoma Multiforme: Impact of Semi-Automated Tumor Segmentation Software
(2017-05-01)
Lee, Myungeun
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Woo, Boyeong
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Kuo, Michael D.
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Jamshidi, Neema
;
Kim, Jong Hyo
Objective: The purpose of this study was to evaluate the reliability and quality of radiomic features in glioblastoma multiforme (GBM) derived from tumor volumes obtained with semi-automated tumor segmentation software. Materials and Methods: MR images of 45 GBM patients (29 males, 16 females) were downloaded from The Cancer Imaging Archive, in which post-contrastT1-weighted imaging and fluid-attenuated inversion recovery MR sequences were used. Two raters independently segmented the tumors using two semi-automated segmentation tools (TumorPrism3D and 3D Slicer). Regions of interest corresponding to contrast-enhancing Lesion, necrotic portions, and non-enhancing T2 high signal intensity component were segmented for each tumor. A total of 180 imaging features were extracted, and their quality was evaluated in terms of stability, normalized dynamic range (NDR), and redundancy, using intra-class correlation coefficients, cluster consensus, and Rand Statistic. Results: Our study results showed that most of the radiomic features in GBM were highly stable. Over 90% of 180 features showed good stability (intra-class correlation coefficient [ICC] >= 0.8), whereas only 7 features were of poor stability (ICC < 0.5). Most first order statistics and morphometric features showed moderate-to-high NDR (4 > NDR >= 1.), while above 35% of the texture features showed poor NDR (< 1). Features were shown to cluster into only 5 groups, indicating that they were highly redundant. Conclusion: The use of semi-automated software tools provided sufficiently reliable tumor segmentation and feature stability; thus helping to overcome the inherent inter-rater and intra-rater variability of user intervention. However, certain aspects of feature quality, including NDR and redundancy, need to be assessed for determination of representative signature features before further development of radiomics.
A systematic approach for identifying level-1 error covariance structures in latent growth modeling
(2017-05-01)
Ding, Cherng G.
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Jane, Ten-Der
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Wu, Chiu-Hui
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Lin, Hang-Rung
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Shen, Chih-Kang
It has been pointed out in the literature that misspecification of the level-1 error covariance structure in latent growth modeling (LGM) has detrimental impacts on the inferences about growth parameters. Since correct covariance structure is difficult to specify by theory, the identification needs to rely on a specification search, which, however, is not systematically addressed in the literature. In this study, we first discuss characteristics of various covariance structures and their nested relations, based on which we then propose a systematic approach to facilitate identifying a plausible covariance structure. A test for stationarity of an error process and the sequential chi-square difference test are conducted in the approach. Preliminary simulation results indicate that the approach performs well when sample size is large enough. The approach is illustrated with empirical data. We recommend that the approach be used in LGM empirical studies to improve the quality of the specification of the error covariance structure.
L On formulae decoupling the total variation of BV functions
(2017-05-01)
Ponce, Augusto C.
;
Spector, Daniel
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應用數學系
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Department of Applied Mathematics
In this paper we prove several formulae that enable one to capture the singular portion of the measure derivative of a function of bounded variation as a limit of non-local functionals. One special case shows that rescalings of the fractional Laplacian of a function u is an element of SBV converge strictly to the singular portion of D-u. (C) 2016 Elsevier Ltd. All rights reserved.
閩西客家博物館田野紀要
(國立交通大學客家文化學院, 2017-05)
劉堉珊
;
張維安
;
Yu-shan Liu and Wei-an Chang
通過博物館的建置來宣示（且詮釋）客家文化，是愈來愈被普遍運用的一種做法。中國閩西在客家文化的發展過程中，具有舉足輕重的位置，該區域中大規模的「土樓」遺留，不但使其透過申請世界文化遺產，一躍成為國際舞臺中受到矚目的客家文化代表，更成為閩西近年來致力發展其「客家特色」的重要動力，如，閩西近年來大量建置客家博物館的規劃中，即可看到這些博物館如何成為介紹與論述閩西客家文化的重要平臺。2016年8月15日到21日，筆者等一行人走訪了閩西的兩個客家學院與多個客家文化博物館，本文即是對此行所見之觀察與紀錄，期待從這些客家博物館對於客家文化的展示、詮釋與蒐藏，觀察並理解當代閩西客家文化的特色與論述邏輯。
晚清客家中心區的「客家中原論」：以嘉應菁英的族群論述為中心
(國立交通大學客家文化學院, 2017-05)
李玲
;
Ling Li
本文採取「從晚清說起」的研究策略來考察嘉應菁英的「客家中原論」。內容有：一、林達泉〈客說〉為「客家中原論」之肇始。二、海外經驗促發黃遵憲率先重視客語特色、關懷我群文教、提升我群自信。三、溫仲和、梁居實等通儒編修《嘉應州志》，特創方言一卷。四、「客家中原論」成為民初梅縣制度化的知識。「客家中原論」工程，由林達泉定位起基，到黃遵憲設計描圖、支起樑柱，再到溫仲和、梁詩五等施工夯實，這套論述已初步完成，而且很快就被編入鄉土教科書中，在客家子弟中推廣普及，成為民初梅縣的制度化知識。
Deploying WLAN service with OpenFlow technology
(2017-05-01)
Hsu, Huai-Wen
;
Huang, Kuei-Li
;
Kao, Yi-Chih
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Tsai, Shi-Chun
;
Lin, Yi-Bing
In this paper, we proposed a feasible software-defined networking (SDN) wireless local area network (WLAN) solution that leverages OpenFlow technique and provides affordable centralized WLAN service without the proprietary restrictions of centralized thin access point WLAN architecture. On the basis of an SDN-enabled WLAN architecture with fat access points, we implement and deploy a wireless network test bed, where network administrators can exploit the extensibility and flexibility of OpenFlow-based SDN switches and controller. Service providers can develop customized application modules and required features. We build our system with open sources and commercial off-the-shelf hardware and develop a mechanism to control wireless bandwidth. Field experimental results show that our SDN wireless bandwidth control application can effectively manage bandwidth in a dynamic and flexible way via the SDN WLAN.
Self-Assembled Supramolecular Nanogels as a Safe and Effective Drug Delivery Vector for Cancer Therapy
(2017-05-01)
Cheng, Chih-Chia
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Liang, Mei-Chih
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Liao, Zhi-Sheng
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Huang, Jyun-Jie
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Lee, Duu-Jong
Simple construction and manipulation of low-molecular-weight supramolecular nanogels, based on the introduction of multiple hydrogen bonding interactions, with the desired physical properties to achieve effective and safe delivery of drugs for cancer therapy remain highly challenging. Herein, a novel supramolecular oligomer cytosine (Cy)-polypropylene glycol containing self-complementary multiple hydrogen-bonded Cy moieties is developed, which undergoes spontaneous self-assembly to form nanosized particles in an aqueous environment. Phase transitions and scattering studies confirm that the supramolecular nanogels can be readily tailored to obtain the desired phase-transition temperature and temperature-induced release of the anticancer drug doxorubicin (DOX). The resulting nanogels exhibit an extremely high load carrying capacity (up to 24.8%) and drug-entrapment stability, making the loading processes highly efficient. Importantly, in vitro cytotoxicity assays indicate that DOX-loaded nanogels possess excellent biosafety for drug delivery applications under physiological conditions. When the environmental temperature is increased to 40 degrees C, DOX-loaded nanogels trigger rapid DOX release and exert cytotoxic effects, significantly reducing the dose required compared to free DOX. Given its simplicity, low cost, high reliability, and efficiency, this newly developed temperature-responsive nanocarrier has highly promising potential for controlled release drug delivery systems.
Terahertz Reflection-Mode Biological Imaging Based on InP HBT Source and Detector
(2017-05-01)
Yun, Jongwon
;
Oh, Seung Jae
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Song, Kiryong
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Yoon, Daekeun
;
Son, Hye Young
This paper presents the development of an oscillator and a detector based on InP HBT technology operating near 300 GHz, and their application to terahertz reflection-mode imaging. The fabricated fundamental-mode common-base (CB) cross-coupled oscillator exhibits a peak output power of 5.3 dBm at 305.8 GHz, and the CB direct detector shows a responsivity higher than 40 kV/W and noise equivalent power lower than 35 pW/root Hz for a frequency range of 270-345 GHz. The imaging system employing the fabricated circuits as the signal source and detector was characterized for the resolution and dynamic range, and then, successfully applied for imaging various biological samples. The results show that low-power terahertz reflection-mode imaging based on solid-state electronic sources and detectors based on a commercial semiconductor technology is promising for various biomedical imaging applications.
Multidimensional Optical Sensing and Imaging System (MOSIS): From Macroscales to Microscales
(2017-05-01)
Javidi, Bahram
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Shen, Xin
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Markman, Adam S.
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Latorre-Carmona, Pedro
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Martinez-Uso, Adolfo
Multidimensional optical imaging systems for information processing and visualization technologies have numerous applications in fields such as manufacturing, medical sciences, entertainment, robotics, sur-veillance, and defense. Among different 3-D imaging methods, integral imaging is a promising multiperspective sensing and display technique. Compared with other 3-D imaging techniques, integral imaging can capture a scene using an incoherent light source and generate real 3-D images for observation without any special viewing devices. This review paper describes passive multidimensional imaging systems combined with different integral imaging configurations. One example is the integral-imaging-based multidimensional optical sensing and imaging system (MOSIS), which can be used for 3-D visualization, seeing through obscurations, material inspection, and object recognition from microscales to long-range imaging. This system utilizes many degrees of freedom such as time and space multiplexing, depth information, polarimetric, temporal, photon flux and multispectral information based on integral imaging to record and reconstruct the multidimensionally integrated scene. Image fusion may be used to integrate the multidimensional images obtained by polarimetric sensors, multispectral cameras, and various multiplexing techniques. The multidimensional images contain substantially more information compared with 2-D images or conventional 3-D images. In addition, we present recent progress and applications of 3-D integral imaging including human gesture recognition in the time domain, depth estimation, mid-wave-infrared photon counting, 3-D polarimetric imaging for object shape and material identification, dynamic integral imaging implemented with liquid-crystal devices, and 3-D endoscopy for healthcare applications.
A study on anomaly detection ensembles
(2017-05-01)
Chiang, Alvin
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David, Esther
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Lee, Yuh-Jye
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Leshem, Guy
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Yeh, Yi-Ren
An anomaly, or outlier, is an object exhibiting differences that suggest it belongs to an as-yet undefined class or category. Early detection of anomalies often proves of great importance because they may correspond to events such as fraud, spam, or device malfunctions. By automating the creation of a ranking or list of deviations, we can save time and decrease the cognitive overload of the individuals or groups responsible for responding to such events. Over the years many anomaly and outlier metrics have been developed. In this paper we propose a clustering-based score ensembling method for outlier detection. Using benchmark datasets we evaluate quantitatively the robustness and accuracy of different ensemble strategies. We find that ensembling strategies offer only limited value for increasing overall performance, but provide robustness by negating the influence of severely underperforming models. (C) 2017 Elsevier B.V. All rights reserved.
感測式骨頭固定元件
(2017-05-01)
徐文祥
;
王子康
;
孫晟軒
;
吳松岳
一種感測式骨頭固定元件，包括一固定部、一鎖附部、一電容結構以及一線圈。鎖附部固定於固定部且適於鎖附於一骨頭內。鎖附部貫穿電容結構，而電容結構具有一電容值且包括一第一導電層、一第二導電層以及一彈性介電層。第一導電層抵接固定部，而第二導電層抵接骨頭，且彈性介電層位於第一導電層與第二導電層之間。線圈具有一電感值，且線圈的兩端分別連接第一導電層以及第二導電層。線圈接收一偵測射頻訊號後，依據電感值以及電容值的變化而產生一回應射頻訊號。
Digital Current Sensorless Control for Dual-Boost Half-Bridge PFC Converter With Natural Capacitor Voltage Balancing
(2017-05)
Chen, Hung-Chi
;
Lu, Che-Yu
;
Li, Guan-Ting
;
Chen, Wei-Cheng
;
電機工程學系
To improve the efficiency of the conventional boost-type power factor correction (PFC) converters with the diode bridge circuit, the PFC converters of bridgeless category are often used. Due to no series-connected switches and no short-through risks, the dual-boost half-bridge (DBHB) circuit is used as the PFC converter in this paper. In order to simplify the conventional two-loop control scheme and reduce the number of sensors, the behaviors of the DBHB PFC converter are studied and its equivalent single-switch model is developed. Then, the current sensorless control for the DBHB PFC converter is proposed to achieve voltage regulation and yield sinusoidal input current in phase with the input voltage without sensing any current. In addition, the proposed method is able to balance capacitor voltages naturally without adding any voltage balancing control loop. An 800-W DBHB PFCprototype is implemented to evaluate the control performance. Both simulation and experimental results are provided to demonstrate the proposed current sensorless control method.
Semiconductor Supply Chain Planning With Decisions of Decoupling Point and VMI Scenario
(2017-05-01)
Chen, Mu-Chen
;
Hsiao, Yu-Hsiang
;
Huang, Hsi-Yuan
;
運輸與物流管理系註：原交通所+運管所
;
Department of Transportation and Logistics Management
Under the trend of globalization, rapid advancement of Information Technology, shorter electronic product life cycles, and the rise of consumer consciousness, there is fiercer market competition in most industries, especially in the semiconductor industry. Effective supply chain management is a critical successful factor for enterprises to survive in such a competitive market since it can help enterprises in reducing cost and improving operational efficiency. For an integrated device manufacturer (IDM) in the semiconductor industry, due to its complex network, strategic alliance among partners as well as supply chain integration are efficient approaches to enhance competitiveness and make more profit. In this paper, we develop an integrated model of supply chain planning for IDMs. The integrated model is developed to help decision makers determine the production quantities and delivery quantities at various locations, the decoupling point of a push-pull supply chain, the inventory buffer at the boundary and the vendor managed inventory scenario. The semiconductor manufacturing characteristics including binning, substitution, and yield are taken into consideration in the formulated model. In addition, the model is developed for a semiconductor supply chain characterized by multiple stages, plants, products, and product grades.