Browsing by Issue Date, starting with "2019-11-17"

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一個人，我完成兩個人的夢
(2019-11-17)
吳宥芯
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Department of Communication and Technology
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傳播與科技學系
創業最需要的從來不是充足的資金、經營策略，而是一份支持自己的熱情和越挫越勇的精神
溫柔的理性　看見與社會的連結一公視記者方君竹
(2019-11-17)
鄧萱妤
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Department of Communication and Technology
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傳播與科技學系
媒體亂象不斷，究竟是「貴圈真亂」，還是事出有因？記者形象逐漸多元，中立客觀真的是判斷好新聞的唯一標準嗎？政治說穿了就是公共事物，為什麼總是被人帶髒地看待呢？公視記者方君竹，用溫柔的理性，述說社會與你我的連結。
「睡」出好成績你睡對了嗎？
(2019-11-17)
陳炘瑜
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Department of Communication and Technology
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傳播與科技學系
你是否經歷過考試前挑燈夜戰、不眠不休的讀書時光？是否熬夜奮鬥後成績仍然不理想？本篇帶你看到睡眠與成績間神奇的秘密。
教育改革=人生改道？ 108學年的臺灣校園
(2019-11-17)
陳千柔
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Department of Communication and Technology
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傳播與科技學系
108教育改革之前鬧得沸沸揚揚，如今正式上路，實地走訪校園，孩子與老師們會買單嗎？
不走尋常路　Whatever副創意總監李心寧
(2019-11-17)
沈品妤
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Department of Communication and Technology
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傳播與科技學系
要怎麼紀念一顆即將死去的遙遠星球？不如幫它辦一場演唱會來告別！各種難解的社會問題要怎麼引起關注？沒問題，畫成卡通人物，來跟他們一起比腕力、拚輸贏！這些有趣的點子，都來自李心寧（Shiny Lee）曾經參與過的專案。她透過每一次的作品，向世界展示她獨樹一幟的設計風格。
Effects of flipped classrooms integrated with MOOCs and game-based learning on the learning motivation and outcomes of students from different backgrounds
(2019-11-17)
Hung, Cheng-Yu
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Sun, Jerry Chih-Yuan
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Liu, Jia-Yin
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教育研究所
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Institute of Education
This study aimed to investigate the effect of flipped classrooms integrated with massive open online courses (MOOCs) and game-based learning on the learning motivation and learning outcomes of students from different backgrounds (in terms of gender, grade, self-confidence indicators in mathematics, and roles played in the game-based learning process). Surveys and a semi-structured open questionnaire were used for data collection, including a basic information questionnaire (to understand the participants' backgrounds), a questionnaire on learning motivation (the Motivated Strategies for Learning Questionnaire, MSLQ), a test of learning achievements in mathematics, and a semi-structured open-ended questionnaire (to understand the learners' feelings). Quantitative analysis results showed that flipped classrooms integrated with MOOCs and game-based learning can enhance students' learning motivation and outcomes. Specifically, compared with students with high self-confidence in learning mathematics, students with low and medium levels of self-confidence showed significantly greater improvement in overall learning motivation. Significantly more enhancements were found for the expectation component of "soldiers" (students with relatively lower learning achievements) than for "generals" (students with higher learning achievements). Furthermore, students in the eighth grade showed significantly greater progress in academic performance than did students in the seventh grade.
總編輯的話
(2019-11-17)
曾弘碩
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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324期，共計10篇文章，包含兩篇社會議題、兩篇人物特寫、一篇科技新知。本篇頭題為徐曼寧的〈YouTube創作自由與社會責任兒童安全誰來守護？〉。本期文章感性地展現人物特寫的情懷與生命，也理性地針砭時事議題，還補充對科技新的認知。
愛美險用健康買單？以市售牙齒美白貼為例
(2019-11-17)
施詞萱
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Department of Communication and Technology
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傳播與科技學系
近幾年風靡各大網紅圈的牙齒美白貼，事實上卻伴隨著使用上的疑慮，面對著厲害的廣告標語，消費者又該如何做選擇？
YouTube創作自由與社會責任兒童安全誰來守護？
(2019-11-17)
徐曼寧
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Department of Communication and Technology
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傳播與科技學系
自媒體時代下，人人都能成為內容產製者。當訊息來自各方，兒童的網路安全該由誰來守護？是政府抑或是業者？
Carol自在生活——用料理傳遞幸福
(2019-11-17)
王會瑄
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Department of Communication and Technology
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傳播與科技學系
在搜尋食譜時，下方的建議搜尋列表常常能看到Carol幾個字。你或許會好奇，Carol代表的是什麽？對記者以及很多部落格「格友」來說，代表的是安心、是溫暖、是一種陪伴。
寧願成為無殼蝸牛，也不甘淪為房奴？
(2019-11-17)
馬鈺絜
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Department of Communication and Technology
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傳播與科技學系
房價上漲問題從1987年爆發無殼蝸牛運動以來就爭端不休，至今還是沒有完善的解套辦法。不少年輕世代都在煩惱，到底買房還是租屋好？其實各有利弊及其風險，政府也正積極實施相關措施。
Patient and health care system characteristics are associated with delayed treatment of tuberculosis cases in Taiwan
(2019-11-19)
Chen, Chien-Chou
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Chiang, Po-Huang
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Chen, Yen-Hsu
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Fan, I-Chun
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Chan, Ta-Chien
Background The decline of the incidence rate of tuberculosis in Taiwan has been partly attributed to the launch of the directly observed therapy short course (DOTS) program in 2006, followed by the DOTS-Plus in 2007. However, with the phasing out of the specialized tuberculosis care system and the declining incidence, clinical workers in Taiwan might become less familiar with the presentation of tuberculosis. Complementing the patient-pathway analysis with health system delay estimates, the objective of this study is twofold: to estimate the alignment between patient care initiation and the availability of prompt diagnostic and treatment services, and to identify the risk factors of delayed tuberculosis treatment. Methods The study population included all Taiwanese patients with incident tuberculosis in 2013. We (1) identified 11,507 incident tuberculosis patients from the 2013 National TB Registry, and (2) linked 10,932 Taiwanese from the registry to the 2012-2013 National Health Insurance Research Database. We assessed patient's care-seeking pathways and associated the determinants of health system delay in a Cox model. Results The overall health system delay was 46 days. We found that 20.5 and 3.5% of 10,932 tuberculosis patients were diagnosed and treated respectively at the initial visit to seek care for TB-related symptoms. Risk factors related to the prolonged health system delay included female gender (adjusted HR = 0.921, 95% CI: 0.884, 0.960), age > =65 years (adjusted HR = 0.720, 95% CI: 0.692, 0.750), non-severe (chest X-ray without cavities) (adjusted HR =0.721, 95% CI 0.683-0.760), chronic respiratory diseases (adjusted HR = 0.544, 95% CI: 0.522, 0.566), living in long-term care facilities (adjusted HR = 0.580, 95% CI: 0.525,0.640), an initial visit at a primary care clinic (adjusted HR = 0.588, 95% CI: 0.565, 0.612), and living in southern Taiwan (adjusted HR = 0.887, 95% CI: 0.798, 0.987). Conclusions The low access to TB diagnostic and treatment services at the initial visit and the prolonged health system delay indicate inefficiency in the health care system. Strengthening training of physicians at public hospitals and health workers at nursing homes might improve the efficiency and timeliness of tuberculosis diagnosis and treatment in Taiwan.
Agarose-Based Gel-Phase Microextraction Technique for Quick Sampling of Polar Analytes Adsorbed on Surfaces
(2019-11-19)
Liao, Pei-Han
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Urban, Pawel L.
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應用化學系
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Department of Applied Chemistry
Sampling and extraction of chemical residues present on flat or curved surfaces as well as touch-sensitive objects are challenging. Hydrogels are characterized by high mechanical flexibility and water content. Thus, they are an ideal medium for transferring water-soluble analytes from a sampled surface to the next stage of an analytical workflow. Here, we demonstrate gel-phase microextraction (GPME), in which disks of blended hydrogels are utilized to lift traces of water-soluble substances adsorbed on surfaces. The protocol has been optimized in a series of tests involving fluorometric and mass spectrometric measurements. Compared with the pure agarose hydrogel, most of the tested blended hydrogels provide a higher efficiency for the sampling/extraction of a model analyte, fluorescein. The blended hydrogel disks are incorporated into three-dimensional (3D)-printed acrylonitrile-butadiene-styrene chips to create easy-to-use sampling probes. We exemplify the suitability of this improved GPME approach in sampling chemical residues present on the skin, glass, and daily use objects. In these tests, the extracts were analyzed on a triple quadrupole mass spectrometer fitted with an electrospray ion source operated in the positive- and negative-ion modes. The method enabled the detection of diclofenac on excised porcine skin fragments exposed to a topical nonsteroidal anti-inflammatory drug and sweat residues (lactic acid) left on surfaces touched by humans. The limits of detection for diclofenac and lactic acid in hydrogel extract were 6.4 x 10(-6) and 2.1 x 10(-5) M, respectively. In a model experiment, conducted using the presented approach, the amount of lactic acid on a glass slide with fingerprints was estimated to be similar to 1.4 x 10(-7) mol cm(-2).
Engineering radiative coupling of excitons in 2D semiconductors
(2019-11-20)
Horng, Jason
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Chou, Yu-Hsun
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Chang, Tsu-Chi
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Hsu, Chu-Yuan
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Lu, Tien-Chang
The resonance energy and the transition rate of atoms, molecules, and solids were understood as their intrinsic properties in classical electromagnetism. It was later realized that these quantities are linked to the radiative coupling between the transition dipole and photon modes. Such effects can be greatly amplified in macroscopic many-body systems from virtual photon exchange between dipoles, but are often masked by inhomogeneity and pure dephasing, especially in solids. Here, we observe in both absorption and emission spectroscopy the renormalization of the exciton resonance and the radiative decay rate in transition metal dichalcogenides monolayers due to their radiative interactions. Tuning the photon mode density near the monolayer, we demonstrate control of cooperative Lamb shift, radiative decay, and valley polarization of the excitons as well as control of the charged exciton emission. Our work establishes a technologically accessible and robust experimental system for engineering cooperative matter-light interactions. (c) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Structural and Electronic Optimization of MoS2 Edges for Hydrogen Evolution
(2019-11-20)
Wang, Hao
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Xiao, Xu
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Liu, Shuyuan
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Chiang, Chao-Lung
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Kuai, Xiaoxiao
The activity and accessibility of MoS2 edge sites are critical to deliver high hydrogen evolution reaction (HER) efficiency. Here, a porous carbon network confining ultrasmall N-doped MoS2 nanocrystals (N-MoS2/CN) is fabricated by a self-templating strategy, which realizes synergistically structural and electronic modulations of MoS2 edges. Experiments and density functional theory calculations demonstrate that the N dopants could activate MoS2 edges for HER, while the porous carbon network could deliver high accessibility of the active sites from N-MoS2 nanocrystals. Consequently, N-MoS2/CN possesses superior HER activity with an overpotential of 114 mV at 10 mA cm(-2) and excellent stability over 10 h, delivering one of best MoS2-based HER electrocatalysts. Moreover, this study opens a new venue for optimizing materials with enhanced accessible catalytic sites for energy-related applications.
Enhancing Condensation Heat Transfer on Three-Dimensional Hybrid Surfaces
(2019-11-20)
Lo, Ching-Wen
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Chu, Yu-Cheng
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Yen, Ming-Han
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Lu, Ming-Chang
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機械工程學系
In recent years, micro/nanostructured surfaces have been applied to enhance condensation heat transfer. However, condensation heat transfer is greatly deteriorated by the flooding phenomenon that occurs at high subcooling temperatures. Here, we propose a three-dimensional (3D) hybrid surface to enhance the condensation at high subcooling temperatures. The 3D hybrid surface consisted of superhydrophobic (SHB) Si nanowire (SiNW) arrays and hydrophilic microchannels. The microchannels could confine the liquid-film thickness, and the liquid bridges formed on the 3D hybrid surfaces could be self-removed. Both of these characteristics prevent the surfaces from flooding. In addition, liquid droplets formed in the SiNW regions were dragged into the microchannels, which also improved the heat transfer. The heat transfer coefficient on the 3D hybrid surface could be enhanced over a large subcooling range. More remarkably, a record high heat flux of 655 +/- 10 kW.m(-2) was obtained on the 3D hybrid surface.
Review-Opportunities for Rapid, Sensitive Detection of Troponin and Cerebral Spinal Fluid Using Semiconductor Sensors
(2019-11-20)
Carey, Patrick H.
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Lobo, Brian C.
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Gebhard, Michael P.
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Leon, Marino E.
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Flax, Sherri D.
There are opportunities for development of modularized, inexpensive protein biomarker sensors in clinical applications. In this review we focus on two of these, namely early diagnosis of acute myocardial infarction (AMI) and detection of cerebral spinal fluid (CSF). Evaluation of patients with acute chest pain is challenging due to the heterogeneity of the underlying conditions, leading to patients with AMI being mistakenly sent home from emergency rooms or those at low risk for an adverse cardiac event being unnecessarily admitted without precise cardiac biomarker testing. Cardiac troponin I (cTnI) in cardiac muscle tissue is a standard clinical biomarker for AMI, as its concentration rises quickly in the blood during release from myocardial cells following cell death. The time-dependence of the cTnI concentration is the basis of antigen-antibody methodologies such as radioimmunoassay and enzyme-linked immunosorbent assay (ELISA). These methods are time consuming, leading to delays in diagnosis and higher costs. The challenge is to develop a real-time, accurate, low-cost point-of-care heart attack sensor. The coefficient of variation must be precise, within the parameters established by the American College of Cardiology. Similarly, leakage of cerebrospinal fluid (CSF) is a critical condition with a high risk of meningitis and potential mortality. The primary methods of detection for the biomarker beta 2-Transfferin (B2T) are immunofixation electrophoresis (IFE) and ELISA. Consistent IFE results down to 2 mu g/mL can be obtained in patient samples, but requires a minimum 2.5-hour testing period, which is not expedient for real time feedback during surgery in or around the central nervous system. Additionally, to achieve good sensitivity and handle the inherently low concentration of B2T in CSF, lab procedures require samples to be concentrated or run in duplicate to ensure accurate detection. Real time turnaround is on the order of days. To alleviate the slow turn-around times, there is strong interest in electronic detection methods for proteins using biologically functionalized transistors, which provide an electronic readout and are readily integrated with wireless data transmission. (C) The Author(s) 2019. Published by ECS.
Phase structure of the (1+1)-dimensional massive Thirring model from matrix product states
(2019-11-20)
Banuls, Mari Carmen
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Cichy, Krzysztof
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Kao, Ying-Jer
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Lin, C. -J. David
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Lin, Yu-Ping
Employing matrix product states as an ansatz, we study the nonthermal phase structure of the (1 + 1)-dimensional massive Thirring model in the sector of a vanishing total fermion number with staggered regularization. In this paper, details of the implementation for this project are described. To depict the phase diagram of the model, we examine the entanglement entropy, the fermion bilinear condensate, and two types of correlation functions. Our investigation shows the existence of two phases, with one of them being critical and the other gapped. An interesting feature of the phase structure is that the theory with the nonzero fermion mass can be conformal. We also find clear numerical evidence that these phases are separated by a transition of the Berezinskii-Kosterlitz-Thouless type. Results presented in this paper establish the possibility of using the matrix product states for probing this type of phase transition in quantum field theories. They can provide information for further exploration of scaling behavior, and they serve as an important ingredient for controlling the continuum extrapolation of the model.
An efficient and stable photoelectrochemical system with 9% solar-to-hydrogen conversion efficiency via InGaP/GaAs double junction
(2019-11-21)
Varadhan, Purushothaman
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Fu, Hui-Chun
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Kao, Yu-Cheng
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Horng, Ray-Hua
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He, Jr-Hau
Despite III-V semiconductors demonstrating extraordinary solar-to-hydrogen (STH) conversion efficiencies, high cost and poor stability greatly impede their practical implementation in photoelectrochemical (PEC) water splitting applications. Here, we present a simple and efficient strategy for III-V-based photoelectrodes that functionally and spatially decouples the light harvesting component of the device from the electrolysis part that eliminates parasitic light absorption, reduces the cost, and enhances the stability without any compromise in efficiency. The monolithically integrated PEC cell was fabricated by an epitaxial lift-off and transfer of inversely grown InGaP/GaAs to a robust Ni-substrate and the resultant photoanode exhibits an STH efficiency of similar to 9% with stability similar to 150 h. Moreover, with the ability to access both sides of the device, we constructed a fully-integrated, unassisted-wireless "artificial leaf" system with an STH efficiency of similar to 6%. The excellent efficiency and stability achieved herein are attributed to the light harvesting/catalysis decoupling scheme, which concurrently improves the optical, electrical, and electrocatalytic characteristics.
砸千萬拯救浪貓——音樂家林心儀
(2019-11-24)
陳姝芸
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Department of Communication and Technology
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傳播與科技學系
她，放棄身為音樂家優渥的生活，散盡千萬積蓄甚至負債，三十餘年來無怨無悔，拯救數百隻流浪毛孩。