Browsing by Issue Date, starting with "2017-05-16"

Now showing 1 - 20 of 13855

導風裝置
(2017-05-16)
劉耀先
;
張勝凱
一種導風裝置包含一第一擋風壁、一第二擋風壁及一第一隔板。該第一擋風壁沿一第一方向延伸。該第一隔板具有至少一第一貫孔且自該第一擋風壁的一側邊沿一第二方向延伸，使該第一隔板與該第一擋風壁夾一第一角度。該第二擋風壁自該第一隔板遠離該第一擋風壁的一側邊朝一第三方向延伸，使該第二擋風壁與該第一隔板夾一第二角度，且使該第一擋風壁與該第二擋風壁分別位於該第一隔板的兩相反表面。
光學可視覺化防僞電子整合裝置及其製造方法
(2017-05-16)
林文杰
;
呂木天
一種光學可視覺化防偽電子整合裝置包含殼體、光源以及分光結構。殼體具有通道，每一通道具有入射端以及出射端，入射端與出射端分別由殼體的相對兩側露出。光源配置以分別朝向入射端發射第一光線，第一光線具有第一波長範圍。分光結構分別設置於通道中，並配置以由第一光線中分離出第二光線至對應之出射端，其中第二光線具有第二波長範圍位於第一波長範圍之內。
Maximum-margin sparse coding
(2017-05-17)
Liu, Chien-Liang
;
Hsaio, Wen-Hoar
;
Xiao, Bin
;
Chen, Chun-Yu
;
Wu, Wei-Liang
This work devises a maximum-margin sparse coding algorithm, jointly considering reconstruction loss and hinge loss in the model. The sparse representation along with maximum-margin constraint is analogous to kernel trick and maximum-margin properties of support vector machine (SVM), giving a base for the proposed algorithm to perform well in classification tasks. The key idea behind the proposed method is to use labeled and unlabeled data to learn discriminative representations and model parameters simultaneously, making it easier to classify data in the new space. We propose to use block coordinate descent to learn all the components of the proposed model and give detailed derivation for the update rules of the model variables. Theoretical analysis on the convergence of the proposed MMSC algorithm is provided based on Zangwill's global convergence theorem. Additionally, most previous research studies on dictionary learning suggest to use an overcomplete dictionary to improve classification performance, but it is computationally intensive when the dimension of the input data is huge. We conduct experiments on several real data sets, including Extended YaleB, AR face, and Caltech101 data sets. The experimental results indicate that the proposed algorithm outperforms other comparison algorithms without an over-complete dictionary, providing flexibility to deal with high-dimensional data sets. (C)2017 Elsevier B.V. All rights reserved.
On tests of treatment-covariate interactions: An illustration of appropriate power and sample size calculations
(2017-05-17)
Shieh, Gwowen
;
管理科學系
;
Department of Management Science
The appraisals of treatment-covariate interaction have theoretical and substantial implications in all scientific fields. Methodologically, the detection of interaction between categorical treatment levels and continuous covariate variables is analogous to the homogeneity of regression slopes test in the context of ANCOVA. A fundamental assumption of ANCOVA is that the regression slopes associating the response variable with the covariate variable are presumed constant across treatment groups. The validity of homogeneous regression slopes accordingly is the most essential concern in traditional ANCOVA and inevitably determines the practical usefulness of research findings. In view of the limited results in current literature, this article aims to present power and sample size procedures for tests of heterogeneity between two regression slopes with particular emphasis on the stochastic feature of covariate variables. Theoretical implications and numerical investigations are presented to explicate the utility and advantage for accommodating covariate properties. The exact approach has the distinct feature of accommodating the full distributional properties of normal covariates whereas the simplified approximate methods only utilize the partial information of covariate variances. According to the overall accuracy and robustness, the exact approach is recommended over the approximate methods as a reliable tool in practical applications. The suggested power and sample size calculations can be implemented with the supplemental SAS and R programs.
PHYSIOLOGICAL SIGNAL MEASURING SYSTEM AND METHOD THEREOF
(2017-05-18)
Tzu-Chien HSIAO
;
Sheng-Chi KAO
The physiological signal measuring method includes the following steps: obtaining a user physiological signal; separating the user physiological signal into multiple first packets according to a first box number; performing a sifting process respectively on the first packets by Empirical Mode Decomposition (EMD) to obtain multiple temporal intrinsic mode functions (temporal IMFs) respectively corresponding to the first packets; calculating multiple average envelope curves according to multiple upper envelope curves and multiple lower envelope curves respectively corresponding to the temporal IMFs; averaging the average envelope curves to generate a semi-IMF; calculating at least one correlation coefficient according to the semi-IMF and at least another semi-IMF; when the at least one correlation coefficient is larger than a correlation coefficient threshold, determining at least one signal section corresponding to the at least one correlation coefficient as at least one main component section of the user physiological signal.
Band Alignment of 2D Transition Metal Dichalcogenide Heterojunctions
(2017-05-18)
Chiu, Ming-Hui
;
Tseng, Wei-Hsuan
;
Tang, Hao-Ling
;
Chang, Yung-Huang
;
Chen, Chang-Hsiao
It is critically important to characterize the band alignment in semiconductor heterojunctions (HJs) because it controls the electronic and optical properties. However, the well-known Anderson's model usually fails to predict the band alignment in bulk HJ systems due to the presence of charge transfer at the interfacial bonding. Atomically thin 2D transition metal dichalcogenide materials have attracted much attention recently since the ultrathin HJs and devices can be easily built and they are promising for future electronics. The vertical HJs based on 2D materials can be constructed via van der Waals stacking regardless of the lattice mismatch between two materials. Despite the defect-free characteristics of the junction interface, experimental evidence is still lacking on whether the simple Anderson rule can predict the band alignment of HJs. Here, the validity of Anderson's model is verified for the 2D heterojunction systems and the success of Anderson's model is attributed to the absence of dangling bonds (i.e., interface dipoles) at the van der Waal interface. The results from the work set a foundation allowing the use of powerful Anderson's rule to determine the band alignments of 2D HJs, which is beneficial to future electronic, photonic, and optoelectronic devices.
RACK ASSEMBLY
(2017-05-18)
Yao-Hsien LIU
;
Sheng-Kai CHANG
A rack assembly includes a rack body and a jet generating device. The rack body is configured to hold a plurality of servers that are displaced from each other by a passageway. The jet generating device is disposed in the passageway and includes a partition wall, a proximal barrier, and a distal barrier. The partition wall is disposed to define an inflow path and an outflow path. When cooling air is drawn into the inflow path, the cooling air is blocked by the distal barrier such that the cooling air is forced to flow into the outflow path through internal ports of the partition wall to generate a plurality of cooling air jets, which impinge on and cool one of the servers.
Gender Differences in the Association between Moderate Alcohol Consumption and Hearing Threshold Shifts
(2017-05-19)
Lin, Yuan-Yung
;
Chen, Hsin-Chien
;
Lai, Wen-Sen
;
Wu, Li-Wei
;
Wang, Chih-Hung
Hearing loss is a global public health problem with a high prevalence, significantly impairing communication and leading to a decrease in the quality of life. The association between moderate alcohol consumption (MAC) and hearing impairment has been addressed in several studies with inconsistent results. The intent of our study is to clarify the correlation between MAC and the hearing threshold and further investigate the interplay between MAC and the hearing threshold categorized by gender. The study included 4,075 participants aged 20-69 years from the 1999-2004 data of National Health and Nutrition Examination Survey (NHANES). The associations among MAC, gender differences, and high-frequency and low-frequency hearing thresholds were analyzed. We found that current female drinkers with MAC tended to have lower hearing thresholds. There is a significant protective effect of MAC on hearing threshold shifts in the US adult population, especially in females. Our research was the first study to further indicate that there is a gender difference in the association between MAC and hearing impairment. In accordance with our results, if people drink, they should consume moderate rather than higher amounts, especially in women, which may result in a reduced risk of hearing loss.
Musashi-1 promotes a cancer stem cell lineage and chemoresistance in colorectal cancer cells
(2017-05-19)
Chiou, Guang-Yuh
;
Yang, Tzu-Wei
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Huang, Chi-Chou
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Tang, Chia-Ying
;
Yen, Jung-Yi
Colorectal cancers (CRCs) are a critical health issue worldwide. Cancer stem cell (CSC) lineages are associated with tumour transformation, progression, and malignant transformation. However, how lineages are transformed and how chemoresistance is acquired by CRCs remain largely unknown. In this report, we demonstrated that the RNA-binding protein Musashi-1 enhanced the development of CD44(+) colorectal CSCs and triggered the formation of anti-apoptotic stress granules (SGs). Our results indicated that CD44(+) CSC lineage-specific induction of tumour malignancies was controlled by Musashi-1. In addition, Musashi-1 formed SGs when CRC cell lines were treated with 5-fluorouracil. The C-terminal domain of Musashi-1 was critical for recruitment of Musashi-1 into SGs. Intracellular Musashi-1 SGs enhanced the chemoresistance of CRCs. Analysis of clinical CRC samples indicated that Musashi-1 expression was prominent in CRC stage IIA and IIB. In summary, we demonstrated that Musashi-1, a stemness gene, is a critical modulator that promotes the development of CD44(+) colorectal CSCs and also enhances CRC chemoresistance via formation of SGs. Our findings elucidated a novel mechanism of CRC chemoresistance through increased anti-apoptotic effects via Musashi-1-associated SGs.
Taylor cone and electrospraying at a free surface of superfluid helium charged from below
(2017-05-19)
Moroshkin, P.
;
Leiderer, P.
;
Moeller, Th. B.
;
Kono, K.
;
物理研究所
Electrically charged metallic micro-and nanoparticles are trapped under a free surface of superfluid He in a vertical static electric field. We observe a static deformation of the charged liquid surface in the form of a Taylor cone and the emission of a charged liquid helium jet (electrospray). Our numeric calculations reproduce the static shape of the cone.
Photoredox-Catalyzed Hydrodifluoroalkylation of Alkenes Using Difluorohaloalkyl Compounds and a Hantzsch Ester
(2017-05-19)
Sumino, Shuhei
;
Uno, Misae
;
Fukuyarna, Takahide
;
Ryu, Ilhyong
;
Matsuura, Makoto
Photoredox-catalyzed hydrodifluoroalkylation of alkenes proceeded smoothly in the presence of a Hantzsch ester as a hydrogen source under visible light irradiation. The reaction was also applicable to the hydrodifluoroalkylation of alkynes, and a continuous photo flow reaction was also successful.
Benchmark Performance of Global Switching versus Local Switching for Trajectory Surface Hopping Molecular Dynamics Simulation: Cis <-> Trans Azobenzene Photoisomerization
(2017-05-19)
Yue, Ling
;
Yu, Le
;
Xu, Chao
;
Lei, Yibo
;
Liu, Yajun
A newly developed global switching algorithm that does not require calculation of nonadiabatic coupling vectors reduces computational costs significantly. However, the accuracy of this simplest nonadiabatic molecular dynamic method has not been extensively compared with the conventional Tully's fewest switches. It is necessary to demonstrate the accuracy of this global switching algorithm. An extensive comparison between local and global switching on-the-fly trajectory surface hopping molecular dynamics is performed for cis-to-trans (800 sampling trajectories) and trans-to-cis (600 sampling trajectories) azobenzene photoisomerization at the OM2/MRCI level. The global switching algorithm is coded into the Newton-X program package. Excellent agreement between the two switching algorithms is obtained not only for highly averaged quantities of quantum yields and lifetimes, but also for detailed contour patterns of product distributions, hopping spot distributions and hopping directions in terms of conical intersections between ground and the first excited states. Therefore, the global switching trajectory surface hopping method can be applied to larger complex systems in which nonadiabatic coupling is not available for excited-state molecular dynamic simulations.
愛鼠愛兔　領養不棄養
(2017-05-21)
陳昱彣
;
王韋翔
;
Department of Communication and Technology
;
傳播與科技學系
介紹愛鼠協會及愛兔協會。
魏榮欣　傳統電影看板畫家
(2017-05-21)
張芸瑄
;
Department of Communication and Technology
;
傳播與科技學系
介紹新竹在地傳統電影看板畫家——魏榮欣。
評殺戮的艱難　秤死刑的正義
(2017-05-21)
林芃蕙
;
Department of Communication and Technology
;
傳播與科技學系
「殺戮的艱難」提出對死刑思辨，為動盪的時局留下見證與註解。
十二夜不再　釀收容悲歌
(2017-05-21)
劉以寧
;
Department of Communication and Technology
;
傳播與科技學系
零安樂政策上路，電影「十二夜」中的悲劇不再上演，卻造成收容所內收容爆量的悲歌。
Water splitting using a three-dimensional plasmonic photoanode with titanium dioxide nano-tunnels
(2017-05-21)
Takakura, Ryohei
;
Oshikiri, Tomoya
;
Ueno, Kosei
;
Shi, Xu
;
Kondo, Toshiaki
In this study, we developed a three-dimensional plasmonic photoanode using titanium dioxide nanotunnels (TNTs) loaded with gold nanoparticles (Au-NPs) for water splitting, to enhance the reaction efficiency. We also optimized the procedure of loading Au-NPs on complex three-dimensional structures. We discuss the correlation between the plasmon-induced charge separation obtained from photoelectrochemical measurement and the morphology of Au-NPs observed by transmission electron microscopy. We have successfully deposited well-dispersed Au-NPs on the walls of TNTs using HAu(OH)(4) as a precursor. The amount of Au-NPs on the TNTs was estimated to be approximately 15-fold larger than that on the thin film titanium dioxide substrate, and the particle size remained small. Photoelectrochemical water splitting was achieved by using a two-electrode system rather than a three-electrode system. Furthermore, stoichiometric water splitting was confirmed by estimating the amounts of the evolved H-2 and O-2 gases under visible light irradiation.
勞工群像寫真
(2017-05-21)
洪于婷
;
Department of Communication and Technology
;
傳播與科技學系
以最貼近營造業工人的角度，嘗試紀錄工人的真實工作狀況，期待大眾能對他們多一些理解。
遊戲與實況　娛樂新潮流
(2017-05-21)
魏若芸
;
Department of Communication and Technology
;
傳播與科技學系
近年遊戲實況的興起，成為另一種工作與娛樂的管道。
回到小時候　重拾童年玩具
(2017-05-21)
郭宜婷
;
Department of Communication and Technology
;
傳播與科技學系
長大後，有多久沒有玩玩具了？這次透過照片，邀請大家一起回到小時候。