Browsing by Issue Date, starting with "2020-05-02"

Now showing 1 - 20 of 5071

On solving the 7,7,5-game and the 8,8,5-game
(2020-05-02)
Hsu, Wei-Yuan
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Ko, Chu-Ling
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Chen, Jr-Chang
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Wei, Ting-Han
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Hsueh, Chu-Hsuan
An mnk-game is a kind of k-in-a-row game played on an m x nboard, where two players alternatively mark empty squares with their own colors and the first player who gets k-consecutive marks (horizontally, vertically, or diagonally) wins. In this paper, we present an AND/OR search tree algorithm specifically for proving mnk-games. We first propose three novel methods to reduce the branching factor of AND/OR search trees. We also propose a new method to find pairing strategies, which further accelerate the proof of mnk-games. The combined methods drastically speed up the proof for the 7,7,5-game, which is solved in 2.5 seconds. Moreover, this paper is the first to solve the 8,8,5-game, which is proven as a draw within 17.4 hours. (C) 2020 Elsevier B.V. All rights reserved.
三十萬粉絲背後的成長故事　Tiffany
(2020-05-03)
高儷玲
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Department of Communication and Technology
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傳播與科技學系
對Tiffany而言，三十萬粉絲，訴說著她四年多來的努力。
壓力好大怎麼辦？毛小孩是良藥
(2020-05-03)
李而
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Department of Communication and Technology
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傳播與科技學系
當你被生活壓得喘不過氣，覺得沒有人可以訴苦、沒有人懂的時候，不妨看看陪伴在你身旁的狗兒，因為他全都懂。根據瑞典科學家指出，當飼主長期處於高壓狀態，狗兒的壓力指數也會同步升高。
馬男波傑克：最悲傷的喜劇落幕
(2020-05-03)
李育陞
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Department of Communication and Technology
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傳播與科技學系
《馬男波傑克》在今年（2020）終於畫下句點，長達六季的旅程是那麼有趣卻也那麼的悲傷，這部影集在粉絲心中注定留下難以抹滅的印象，也註定將在諷刺卡通史上佔有舉足輕重的地位。
洗手你洗對了嗎？
(2020-05-03)
許峰睿
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Department of Communication and Technology
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傳播與科技學系
因為新型冠狀病毒疫情的爆發，各國都在倡導民眾勤洗手。但你知道洗手其實含有許多學問及技巧嗎？魔鬼藏在細節裡，病菌更是如此，擁有正確的衛生資訊與清潔方法才是防疫關鍵。
總編輯的話
(2020-05-03)
何雨潮
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Department of Communication and Technology
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傳播與科技學系
本期為喀報336期，總計6篇文章。其中有1篇人物特寫，1篇社會議題，1篇藝文評論，2篇科技新知，以及1篇資訊圖表。本期頭題為李育陞的《馬男波傑克：最悲傷的喜劇落幕》，通順流暢的筆觸，探討影集並引發人們反思現今的社會議題。本期雖然篇數相對較少，不過各個類目都有文章，精彩度並未減少。
說破的關係　還能當朋友嗎
(2020-05-03)
詹庭瑄
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Department of Communication and Technology
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傳播與科技學系
單戀讓你患得患失，每分每秒都心塞，被拒絕後還是渴望繼續做朋友，甚而發展成戀情，到底是為什麼呢？
台灣公私立國中比較
(2020-05-03)
梁子敬
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Department of Communication and Technology
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傳播與科技學系
【台灣私立國中現象】專題私立國中學生比例逐年升高，究竟公私立國中有何差別？
Photonic integrated multiwavelength laser arrays: Recent progress and perspectives
(2020-05-04)
Lee, San-Liang
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Lu, Tien-chang
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Hung, Yung-, Jr.
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Chen, Lih-Ren
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Huang, Zhen-Ting
With the significant technology advancement in photonic integration and the demands of compact light sources of multiple wavelengths, multiwavelength laser arrays (MWLAs) can play important roles in high-capacity optical signal transmission, photonic switching, and optical sensing. Manufacturing with semiconductor foundries and the integration with electronic integrated circuits bring not only advanced technologies but also new concepts for realizing MWLAs. This paper will first overview the existing technology development and then discuss the challenges and possible solutions for enabling photonic-integrated MWLAs. The overview will cover monolithically and hybrid-integrated MWLAs. The wavelength registration for both in-plane and vertical-cavity MWLAs will be discussed and compared.
Role of tungsten dopants in indium oxide thin-film transistor on radiation hardness technology
(2020-05-04)
Ruan, Dun-Bao
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Liu, Po-Tsun
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Gan, Kai-Jhih
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Chiu, Yu-Chuan
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Hsu, Chih-Chieh
The effects of radiation on tungsten doped indium oxide (IWO) thin-film transistors (TFTs) have been well investigated in this Letter. In order to achieve high stability and excellent electrical performance simultaneously even in high ionizing radiation damage ambient, different concentrations of tungsten dopant have been introduced for the TFT device fabrication. It is interesting that the high energy ionizing radiation may significantly increase the conductivity and influence the total concentration of oxygen vacancy in the transparent amorphous oxide semiconductor material, which may be completely different from the traditional radiation damage effect for silicon based CMOS devices. However, that abnormal phenomenon will be effectively suppressed by the powerful carrier suppressor, tungsten, which may have a high oxygen bond dissociation energy. Therefore, IWO devices with a 4% tungsten oxide dopant might be the optimized result even after high dosage ionizing radiation exposure. Hence, it may provide a promising radiation hardness approach to improve both the electrical characteristics and reliability for next generation displays, which can be used in the control system of nuclear power generation or space technology.
Preparation and thermal dissipation of hollow carbon fibers from electrospun polystyrene/poly(amic acid) carboxylate salt core-shell fibers
(2020-05-05)
Li, Jia-Wei
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Hsu, Hsun-Hao
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Chang, Chia-Jui
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Chiu, Yu-Jing
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Tseng, Hsiao-Fan
Polyimides (PIs) possess great mechanical properties, outstanding thermal stability, solvent inertness, and the ability to be converted into carbon by thermal carbonization. Although studies on carbon materials derived from PIs have been conducted, PI-derived one-dimensional (1D) carbon materials with high surface areas, especially carbon tubes or hollow carbon fibers, have been rarely investigated. In this work, we provide a simple and facile method to prepare hollow carbon fibers by carbonizing hollow PI fibers. Blend solutions of poly(amic acid) carboxylate salts (PAAS) and polystyrene (PS) are electrospun to form core-shell PS/PAAS fibers, in which the PS and PAAS domains are used as sacrificial and precursor materials, respectively. By imidizing the PAAS to PI and selectively removing PS, hollow PI fibers can be obtained. Finally, the hollow PI fibers are carbonized to form hollow carbon fibers. The fiber samples at different stages are examined by thermal gravimetric analysis (TGA), Raman spectrometry, Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The infrared images show that the thermal energy transfer rates of the hollow carbon fibers are higher than those of the hollow PI and PS/PI core-shell fibers, which can be attributed to the better thermal conductivity of carbon resulting from the covalent sp(2) bonding between carbon atoms and the high surface area of the hollow structure.
Thermal design aspects for improving temperature homogeneity of silicon wafer during thermal processing in microlithography
(2020-05-05)
Muneeshwaran, M.
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Wang, Chi-Chuan
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機械工程學系
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Department of Mechanical Engineering
Stringent temperature control is of great importance in the post-exposure baking of the lithography process, and this is usually maintained through the lamp heating and multizone heating method, which demands a precise control system. There is a vast scope for the wafer temperature homogeneity improvement by considering the thermal aspects in bake station design. In this study, both an experimental and a transient numerical analysis are carried out to examine the factors that could seriously affect the temperature uniformity of the wafer during the baking process. It is found that the guide plate arrangement, guide plate slope, and the air gap between the lid and hot plate play a critical role in controlling the wafer temperature uniformity. On this basis, some further improved bake stations are proposed to attain a better temperature homogeneity across the wafer. The performance of the improved designs is analyzed numerically. Yet, a better design based on the simulation is developed and tested experimentally. The new design features a 2.5 degrees guide plate with the funnel arrangement subject to the air gap condition, offering a temperature homogeneity within 0.2-0.3 degrees C on a 6 '' wafer.
Marine gravity determined from multi-satellite GM/ERM altimeter data over the South China Sea: SCSGA V1.0
(2020-05-06)
Zhu, Chengcheng
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Guo, Jinyun
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Gao, Jinyao
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Liu, Xin
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Hwang, Cheinway
High-precision and high-resolution gravity fields can be derived from multi-source satellite altimeter data. A gravity anomaly model around the South China Sea (SCSGA) V1.0 on a 1 ' x 1 ' grid is established from sea surface heights (SSHs) of several geodetic missions (GMs) and exact repeat missions. Gridded deflections of the vertical are first calculated from SSHs by the least squares collocation (LSC) method and then used to derive gravity anomalies by the inverse Vening Meinesz formula. In gravity derivation processing, we establish an approximate relationship among the precision of altimetric gravity, precision of geoid gradients, and density of geoid gradients (the average number of geoid gradients per 1 ' x 1 ' region). The weights of geoid gradients from the Ka-band altimeter for the LSC are innovatively determined by an iterative method. Finally, SCSGA V1.0 is assessed by ship-borne gravity anomalies and marine gravity models. The performance of GMs in gravity derivation is evaluated. In general, the altimetric gravity precision in regions with many islands and reefs increases more obviously than those in other regions when the geoid gradient density increases. The standard deviation of SCSGA V1.0 is 2.78 mGal, which is slightly better than those of four recognized global marine gravity models around the SCS. CryoSat-2 is the most important dataset for SCSGA V1.0. Ka-band SARAL/AltiKa plays a major role in gravity derivation, and the contribution of Haiyang-2A is greater than those of other Ku-band satellites, except CryoSat-2. SCSGA V1.0 is concluded to reach an international advanced level for marine gravity from altimeter data around the SCS.
Structure-Preserving Methods for Computing Complex Band Structures of Three Dimensional Photonic Crystals
(2020-05-06)
Huang, Tsung-Ming
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Li, Tiexiang
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Lin, Jia-Wei
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Lin, Wen-Wei
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Tian, Heng
This work is devoted to the numerical computation of complex band structure k=k(omega)is an element of C3, with omega being positive frequencies, of three dimensional isotropic dispersive or non-dispersive photonic crystals from the perspective of structured quadratic eigenvalue problems (QEPs). Our basic strategy is to fix two degrees of freedom in k and to view the remaining one as the eigenvalue of a complex gyroscopic QEP which stems from Maxwell's equations discretized by Yee's scheme. We reformulate this gyroscopic QEP into a T-palindromic QEP, which is further transformed into a structured generalized eigenvalue problem for which we have established a structure-preserving shift-and-invert Arnoldi algorithm. Moreover, to accelerate the inner iterations of the shift-and-invert Arnoldi algorithm, we propose an efficient preconditioner which makes most of the fast Fourier transforms. The advantage of our method is discussed in detail and corroborated by several numerical results.
Evaluating people's concern about their health information privacy based on power-responsibility equilibrium model: A case of Taiwan
(2020-05-07)
Hwang, Hsin-Ginn
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Lin, Yun
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資訊管理與財務金融系註：原資管所+財金所
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Department of Information Management and Finance
To address the issue of rising expenditure of healthcare service and to fulfill the skyrocketing demand for quality healthcare, the electronic medical records (EMR) exchange has become a vital and indispensable solution for healthcare facilities in terms of being able to share medical information among healthcare providers. Hence, EMR exchange was expected to improve the quality of healthcare and reduce the cost of repetitive medical check-ups and unnecessary treatments. However, recent reports affirming EMR data leaks and compromises have ignited major worldwide privacy concerns over the security of the EMR systems. How to effectively diminish patients' concern for EMR privacy has thus become an important issue that healthcare institution managers/stakeholders have to address urgently. This study leverages the power-responsibility equilibrium perspective to investigate the antecedents and consequences of concerns for the EMR exchange. A survey using 391 responses collected from medical centers, regional and district hospitals in Taiwan was used to conduct this study. The results show that government regulations have a positive effect on hospital privacy policies. Furthermore, both government regulations and hospital privacy policy are negatively associated with concern for EMR information privacy. Additional reports gathered from this study also showed that concern for EMR information privacy could result in patients' protective responses including refusal to provide personal health information (PHI), removal of PHI, negative word of mouth, complaining directly to the hospital, or complaining indirectly to third-party organizations. These findings demonstrate the need for healthcare facilities to formulate robust privacy policies in order to alleviate patients' concern for EMR information privacy based on governmental regulations. This regulation is top-priority as the incapability of reducing patients' concern for EMR information privacy may lead to the collapse of the campaign for the full-adoption of EMR or possibly jeopardize the promotion and application of EMR among healthcare facilities.
Approach to Fast Screen the Formation of an Exciplex
(2020-05-07)
Luo, Dian
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Liao, Chia-Wei
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Chang, Chih-Hao
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Tsai, Chih-Chieh
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Lu, Chin-Wei
Exciplex formation could be confirmed through photoluminescence (PL) measurement of films consisting of both hole transport material (HTM) and electron transport material (ETM) or by measuring the electroluminescence (EL) of organic light-emitting diodes (OLEDs) with an HTM:ETM mixed emitting layer (EML). However, preparation for solid films or OLEDs is time-consuming, thus reducing the effective identification of exciplex systems in broad material combinations. This study proposes a fast-screening method for exciplex formation by measuring PL spectra in a relatively high polar solvent. Several HTM:ETM combinations were used to assess the feasibility of the proposed fast-screening method. The exciplex was further confirmed by phosphorescence as well as transient PL decay. In addition, pure exciplex OLEDs with an HTM:ETM mixed EML exhibited EL spectra akin to their corresponding PL spectra measured in a high polar solvent, verifying exciplex formation. These results demonstrated that our proposed PL measurement in a high polar solvent could effectively accelerate the screening for exciplex formation, thereby boosting the rapid development of exciplex research.
Facile synthesis of core-shell structured Si@graphene balls as a high-performance anode for lithium-ion batteries
(2020-05-07)
Jamaluddin, Anif
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Umesh, Bharath
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Chen, Fuming
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Chang, Jeng-Kuei
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Su, Ching-Yuan
Encapsulating silicon (Si) nanoparticles with graphene nanosheets in a microspherical structure is proposed to increase electrical conductivity and solve stability issues when using Si as an anode material in lithium-ion batteries (LIBs). Currently the main strategies to produce high-quality Si-graphene (Si@Gra) electrodes are (1) chemical vapor deposition (CVD) of graphene grown in situ on Si by hydrocarbon precursors and (2) encapsulating Si with a graphene oxide followed by postannealing. However, both methods require a high-temperature and are costly and time-consuming procedures, which hinders their mass scalability and practical utilization. Herein, we report a Si@Gra composite with a ball-like structure that is assembled by a facile spray drying process without a postannealing treatment. The graphene sheets are synthesized by an electrochemical exfoliation method from natural graphite. The resulting Si@Gra composite exhibits a unique core-shell structure, from which the ball-like morphology and the number of graphene layers in the Si@Gra composites are found to affect both the electric conductivity and ionic conductivity. The Si@Gra composites are found to increase the capacity of the anode and provide excellent cycling stability, which is attributed to the high electrical conductivity and mechanical flexibility of the layered graphene; additionally, a void space in the core-shelled ball structure inside the Si@Gra compensates for the Si volume expansion. As a result, the Si@few-layer graphene ball anode exhibits a high initial discharge capacity of 2882.3 mA h g(-1) and a high initial coulombic efficiency of 86.9% at 0.2 A g(-1). The combination of few-layer graphene sheets and the spray drying process can effectively be applied for large-scale production of core-shell structured Si@Gra composites as promising anode materials for use in high-performance LIBs.
MicroRNA-483 amelioration of experimental pulmonary hypertension
(2020-05-08)
Zhang, Jin
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He, Yangyang
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Yan, Xiaosong
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Chen, Shanshan
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He, Ming
Endothelial dysfunction is critically involved in the pathogenesis of pulmonary arterial hypertension (PAH) and that exogenously administered microRNA may be of therapeutic benefit. Lower levels of miR-483 were found in serum from patients with idiopathic pulmonary arterial hypertension (IPAH), particularly those with more severe disease. RNA-seq and bioinformatics analyses showed that miR-483 targets several PAH-related genes, including transforming growth factor-beta (TGF-beta), TGF-beta receptor 2 (TGFBR2), beta-catenin, connective tissue growth factor (CTGF), interleukin-1 beta (IL-1 beta), and endothelin-1 (ET-1). Overexpression of miR-483 in ECs inhibited inflammatory and fibrogenic responses, revealed by the decreased expression of TGF-beta, TGFBR2, beta-catenin, CTGF, IL-1 beta, and ET-1. In contrast, inhibition of miR-483 increased these genes in ECs. Rats with EC-specific miR-483 overexpression exhibited ameliorated pulmonary hypertension (PH) and reduced right ventricular hypertrophy on challenge with monocrotaline (MCT) or Sugen + hypoxia. A reversal effect was observed in rats that received MCT with inhaled lentivirus overexpressing miR-483. These results indicate that PAH is associated with a reduced level of miR-483 and that miR-483 might reduce experimental PH by inhibition of multiple adverse responses.
胡瓊之　打造新竹手作的藏寶盒
(2020-05-10)
邱于非
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Department of Communication and Technology
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傳播與科技學系
「藏物少女」胡瓊之，創立了思微藏物以及藏物市集，致力於推廣手作工藝，讓新竹不再只是科技城，也能是充滿文創藝術的藏寶盒。
通姦除罪　讓夫妻的世界崩裂嗎
(2020-05-10)
詹庭瑄
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Department of Communication and Technology
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傳播與科技學系
台灣通姦罪案例通常以撤告或不足以證明有罪結束，通姦罪真的能保障婚姻幸福嗎？性忠貞若為對婚姻契約的承諾，違反承諾時應回到民法來處理。