Browsing by Issue Date, starting with "2016-08"

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Uniqueness: skews bit occurrence frequencies in randomly generated fingerprint libraries
(2016-08)
Chen, Nelson G.
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分子醫學與生物工程研究所
;
Institute of Molecular Medicine and Bioengineering
Requiring that randomly generated chemical fingerprint libraries have unique fingerprints such that no two fingerprints are identical causes a systematic skew in bit occurrence frequencies, the proportion at which specified bits are set. Observed frequencies (O) at which each bit is set within the resulting libraries systematically differ from frequencies at which bits are set at fingerprint generation (E). Observed frequencies systematically skew toward 0.5, with the effect being more pronounced as library size approaches the compound space, which is the total number of unique possible fingerprints given the number of bit positions each fingerprint contains. The effect is quantified for varying library sizes as a fraction of the overall compound space, and for changes in the specified frequency E. The cause and implications for this systematic skew are subsequently discussed. When generating random libraries of chemical fingerprints, the imposition of a uniqueness requirement should either be avoided or taken into account.
癢
(深河出版有限公司, 2016-08-01)
鄭聖勳
日光調控裝置
(2016-08-01)
陳政寰
一種日光調控裝置包含一光聚焦模組以及一光偏折模組。光聚焦模組用以將入射之一日光會聚於一聚焦區域或鄰近聚焦區域。光偏折模組設置於聚焦區域，並用以將會聚之日光偏折至一目標區域，其中目標區域偏離光聚焦模組之一光軸。上述之日光調控裝置可使太陽能電池、加熱裝置以及光導元件等裝置有較為彈性之設置方式。
Using a Low Fluence Q-Switched 532/1064-nm Nd:YAG Laser for Facial Skin Depigmentation in Asian Patients Outcome and Complication Profile Analysis
(2016-08)
Shen, Jen-Hsiang
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Chang, Chang-Cheng
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Chen, Yu-Tsung
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Hsih, Chao-Jen
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Huang, Hsin
Background and Objectives: Low fluence Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) lasers are widely applied for facial depigmentation. Nonetheless, few reports analyze the general outcome, complications, of single and combined therapy of 532/1064-nm Nd: YAG lasers in Asian patients with Fitzpatrick type IV skin. Study Design/Materials and Methods: We retrospectively reviewed all consecutive patients who completed 5 consecutive sessions at 1-month intervals of treatment with 1064-nm (spot size: 5-7 mm, 1.5-2.0 J/cm(2)) or combined with 532-nm (spot size, 2-3 mm; 0.5-1.5 J/cm(2)) Nd: YAG laser (Laseroptek, Korea) from October 2011 to March 2013. The patients, laser surgeon, and 3 blinded reviewers assessed the outcomes and complications. Improvement was graded as follows: 1, 0%-25%; 2, 26%-50%; 3, 51%-75%; 4, 76-90%; and 5, greater than 90%. Postinflammatory hyperpigmentation (PIH) was documented according to the severity (1, slight; 2, moderate; 3, severe; and 4, extreme). Other post-laser side effects were also documented (eg, scaling, dryness, erythema, and pruritus). Results: Four male patients and 37 female patients were included with a mean age of 38.5 years (SD, 10.1 years). There were no significant differences on patients\', surgeon\'s, or blinded reviewers\' improvement gradings. (4.11 +/- 0.62 vs 4.30 +/- 0.46, P = 0.54; 3.88 +/- 0.66 vs 3.89 +/- 0.31, P = 0.50; 3.30 +/- 0.69 vs 3.74 +/- 0.38, P = 0.34). Transient minor side effect occurred as follows: erythema in 9 (22%), pruritus in 7 (17%), dryness in 6 (15%), and scaling in 6 (15%). There was no risk difference in these side effects between groups. The PIH scores were slight in 10 patients (4 in single and 6 in combined), severe in 4 (3 in single and 1 in combined), and extreme in 1 (single therapy). The PIH incidence also did not differ (33.3%, 35.3%; P = 0.58). Conclusions: We reported satisfactory outcomes after low-fluence Q-switched sole 1064-nmor combined 532/1064-nm therapy. The outcome and complication profiles did not differ between the groups. The PIH incidence was not low, but usually transient. The incidence of severe or extreme PIH was rare.
讀書－《葉榮鐘選集》：編案
(深河出版有限公司, 2016-08-01)
蔡鈺淩
Bifurcation analysis of the behavior of partially wetting liquids on a rotating cylinder
(2016-08)
Lin, Te-Sheng
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Rogers, Steven
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Tseluiko, Dmitri
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Thiele, Uwe
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應用數學系
We discuss the behavior of partially wetting liquids on a rotating cylinder using a model that takes into account the effects of gravity, viscosity, rotation, surface tension, and wettability. Such a system can be considered as a prototype for many other systems where the interplay of spatial heterogeneity and a lateral driving force in the proximity of a first-or second-order phase transition results in intricate behavior. So does a partially wetting drop on a rotating cylinder undergo a depinning transition as the rotation speed is increased, whereas for ideally wetting liquids, the behavior only changes quantitatively. We analyze the bifurcations that occur when the rotation speed is increased for several values of the equilibrium contact angle of the partially wetting liquids. This allows us to discuss how the entire bifurcation structure and the flow behavior it encodes change with changing wettability. We employ various numerical continuation techniques that allow us to track stable/unstable steady and time-periodic film and drop thickness profiles. We support our findings by time-dependent numerical simulations and asymptotic analyses of steady and time-periodic profiles for large rotation numbers. Published by AIP Publishing.
Quantum-Dot Surface Emitting Distributed Feedback Lasers Using Indium-Tin-Oxide as Top Claddings
(2016-08-01)
Chang, Ting-Yuan
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Pan, Chien-Hung
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Hong, Kuo-Bin
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Lin, Chien-Hung
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Lin, Gray
We demonstrate InAs/InGaAs quantum-dot surface emitting distributed feedback (SE-DFB) lasers, using an indium-tin-oxide layer as top cladding, which eliminates the regrowth process used in conventional DFB lasers to greatly simplify laser process. The lasing peak near 1.30 mu m realized using the grating period of 375 nm exhibited a 0.13-nm linewidth and a low-temperature red-shift rate of 0.1 nm/K. The laser had a threshold current density of 210 A/cm(2) and a characteristic temperature of 94.6 K. The surface emitting laser light had the divergence angles of less than 1 degrees and 8 degrees similar to 9 degrees along and perpendicular to the grating direction, respectively.
拒絕用完即丟：優衣庫代工廠工人的身體抗爭（2014-2015）
(深河出版有限公司, 2016-08-01)
劉世鼎
;
史唯
Tight Lower Bounds for Channel Hopping Schemes in Cognitive Radio Networks
(2016-08)
Chang, Cheng-Shang
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Liao, Wanjiun
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Wu, Tsung-Ying
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傳播研究所
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Institute of Communication Studies
In this paper, we consider the two-user multichannel rendezvous problem in a cognitive radio network (CRN) and derive tight lower bounds for maximum time-to-rendezvous (MTTR) and maximum conditional time-to-rendezvous (MCTTR) of various channel hopping (CH) schemes under a channel loading constraint. In the symmetric and synchronous setting, we propose a novel Cycle-Adjustable Channel Hopping (CACH) scheme to achieve the MTTR lower bound (when the channel loading is bounded above by with being a prime power). Thus, the MTTR lower bound is tight and the CACH scheme is optimal in minimizing MTTR among all the symmetric and synchronous CH schemes under the same channel loading constraint. In the asymmetric setting, we show that the classical wait-for-mommy strategy can be used to achieve the MCTTR lower bound, and thus it is optimal. In the symmetric and asynchronous setting, we also show a hierarchical construction of an asynchronous CH sequence by using two smaller asynchronous CH sequences. To further understand the effect of channel loading to the other performance metrics in a CRN, we perform various computer simulations for various CH schemes. Our simulation results show that the average time-to-rendezvous of CACH is independent of the total number of channels, and it is also robust to the disturbance of primary users.
Urban sustainability assessment of Taiwan based on data envelopment analysis
(2016-08)
Yang, Wen-Chi
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Lee, Yuh-Ming
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Hu, Jin-Li
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交大名義發表
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National Chiao Tung University
The rapid process of urbanization brings forth growing concerns about the sustainability of cities. This study adopts an extended urban metabolism framework to assess urban sustainability and utilizes a data envelopment analysis (DEA) model with undesirable outputs that takes pollutions into account in order to measure the aggregate urban input-output efficiency of Taiwan\'s 22 administrative regions. The model not only compares aggregate urban efficiency, but also identifies which input or output item should be adjusted and what the target values are. The results indicate that Taipei City and Lienchiang County are the most sustainable cities in Taiwan. This study also proposes several indices, categorized as resource efficiency and pollution efficiency. In terms of resource efficiency, the findings present that Taiwan needs to improve its electricity and water efficiencies the most. With regard to pollution efficiency, garbage efficiency performs the best. Finally, industrial structure has a strong influence on resource efficiency and pollution efficiency. (C) 2016 Elsevier Ltd. All rights reserved.
記．憶聖勳：重慶，2015年秋
(深河出版有限公司, 2016-08-01)
趙剛
A Planarized Thermophotovoltaic Emitter With Idealized Selective Emission
(2016-08-01)
Fu, Sze Ming
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Zhong, Yan Kai
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Tu, Ming Hsiang
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Chen, Bo Ruei
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Lin, Albert
Compared with conventional solar cells, thermophotovoltaics (TPV) can be more efficient and, thus, exceeds the detailed balance efficiency limit. In particular, the emitter of TPV is a critical design since it determines whether the thermalization loss can be reduced and whether the sub-band-gap radiation can be suppressed, as far as the photovoltaic (PV) process is concerned. In this paper, we propose a selective planar emitter composed of alternating ultrathin metal and dielectric layers. An aperiodic dielectric stacking is designed to tailor the emission spectrum by shaping the emission peak and by adjusting the emission wavelength. We show that the peak emission wavelength (lambda(emission)) is adjustable from lambda = 1500 nm to lambda = 2500 nm. Furthermore, the long-wavelength cutoff is very sharp for our proposed emitter structure, and the absorption is suppressed to 0.1 beyond the cutoff. The preliminary experiment is also conducted to fulfill the concept of a fully planar ultrathin refractory metal emitter design, and the result is similar to the calculated ones. We believe that the planar thermal emitter based on ultrathin metals and aperiodic dielectric stacking is very promising for future thermal emission applications since it requires no lithography and etching, provides strong peak emission power, and possesses wide wavelength scalability.
聖勳的德性之美
(深河出版有限公司, 2016-08-01)
呂正惠
A Direct AC-DC and DC-DC Cross-Source Energy Harvesting Circuit with Analog Iterating-Based MPPT Technique with 72.5% Conversion Efficiency and 94.6% Tracking Efficiency
(2016-08)
Chen, Shin-Hao
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Huang, Tzu-Chi
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Ng, Shao Siang
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Lin, Kuei-Liang
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Du, Ming-Jhe
The proposed cross-source energy (CSE) harvesting system accepts universal energy sources, including the ac and dc sources. The buck-boost conversion of CSE automatically converts ac or dc input into dc output without being limited by the type of universal energy source. The CSE technique simultaneously supplies the regulated output for the system loading and the battery charging output. A test chip fabricated in the VIS Bipolar, CMOS, and DMOS (BCD) process can optimally derive harvest energy with 72.5% power efficiency when one solar input source is used. A backup converter is designed to complement the CSE technique to guarantee the regulation of output voltage. The proposed analog iterating-based (AIB) maximum power point tracking (MPPT) technique achieves 94.6% tracking efficiency without complex data calculation and storage, which are better results compared with those of previous research.
Active and passive compensation of APPLE II-introduced multipole errors through beam-based measurement
(2016-08-01)
Chung, Ting-Yi
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Huang, Szu-Jung
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Fu, Huang-Wen
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Chang, Ho-Ping
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Chang, Cheng-Hsiang
The effect of an APPLE II-type elliptically polarized undulator (EPU) on the beam dynamics were investigated using active and passive methods. To reduce the tune shift and improve the injection efficiency, dynamic multipole errors were compensated using L-shaped iron shims, which resulted in stable top-up operation for a minimum gap. The skew quadrupole error was compensated using a multipole corrector, which was located downstream of the EPU for minimizing betatron coupling, and it ensured the enhancement of the synchrotron radiation brightness. The investigation methods, a numerical simulation algorithm, a multipole error correction method, and the beam-based measurement results are discussed. (C) 2016 Elsevier B.V. All rights reserved.
Evaluating the Commercial Potential of Original Technologies in Universities
(2016-08)
Lee, Y. C.
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Lin, Grace T. R.
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Hsi, P. H.
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Lim, S. S.
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科技管理研究所
Since 2010, Ministry of Science and Technology (MOST) and Academia Sinica in Taiwan have formulated the Germination Program to translate important scientific discoveries into innovative developments. Using actual cases, this study aimed to propose a technology evaluation framework consisting of a hybrid fuzzy multi-criteria decision making (fuzzy MCDM) approach to evaluate and prioritize the optimal alternatives with best commercial potential. The fuzzy Delphi method was first used to determine the three dimensions and nine important decision criteria. Next, the fuzzy analytic hierarchy process (fuzzy AHP) results indicated that the top three dimensions are accordingly "technological innovation", "business development" and "operating management". The top three important criteria are "technological origins", "potential impact" and "technological competence" respectively. Finally, the fuzzy technique for order preference by similarity to ideal solution (fuzzy TOPSIS) results revealed that T2 and T4 are the two optimal alternatives with best commercial potential for further funding and commercialization. The proposed technology evaluation framework could serve as a reference to both government administrative agencies and university practitioners for the future evaluation of commercializing original technologies.
Preface to the Special Issue on "Innovative Applications of Radar and LiDAR Remote Sensing"
(2016-08)
Shih, Peter Tian-Yuan
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Tseng, Yi-Hsing
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Tsai, Fuan
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Chang, Chung-Pai
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土木工程學系
胭脂
(深河出版有限公司, 2016-08-01)
鄭聖勳
Performance enhancement of III-V multi-junction solar cells using indium-tin-oxide electrodes
(2016-08-01)
Kao, Yu-Cheng
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Ou, Sin-Liang
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Wu, Fan-Lei
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Horng, Ray-Hua
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電機學院
InGaP/GaAs dual-junction solar cells were prepared on p-type GaAs substrates by metalorganic chemical vapor deposition. Three types of front-side electrodes, which included AuGe/Au metal-finger, ITO-finger, and ITO-overcoated, were individually fabricated on the devices and denoted as samples A, B, and C, respectively. The thickness of ITO film is 200 nm, and its transmittance can reach 99% in the visible region. Based on the current density-voltage (J-V) measurement, the short-circuit current density (J(sc)) of samples A, B, and C are 8.13, 9.35, and 10.90 mA/cm(2), while the conversion efficiencies of these three samples are evaluated to be 15.45%, 18.14%, and 20.24%, respectively. This reveals that sample C possesses 31.0% enhancement in the conversion efficiency compared to that of sample A. Additionally, the series resistances (Rs) of samples A, B, and C are 21.43, 22.94, and 6.71 Omega-cm(2), respectively. The lowest Rs occurred in sample C can be attributed to the elimination of the lateral resistance between electrodes because this device was fabricated with the ITO-overcoated front-side electrode. In sample C, since the ITO front-side electrode can cover overall surface of the device, all regions on the sample surface can extract the electrons, leading to the highest J(sc). (C) 2016 Elsevier B.V. All rights reserved.
思念我們的家人聖勳
(深河出版有限公司, 2016-08-01)
陳光興