Browsing by Issue Date, starting with "2019-12-29"

Now showing 1 - 20 of 6087

女性對環保生理用品的心魔為何心驚驚？
(2019-12-29)
徐曼寧
;
Department of Communication and Technology
;
傳播與科技學系
【環保生理用品崛起】專題

因應環保風潮，女性生理用品也陸續推出許多環保新商品，諸如月亮杯、布衛生棉等。然而在台灣，環保生理用品的使用率卻極低，究竟女性對他們的心魔為何？
總編輯的話
(2019-12-29)
石恩亞
;
Department of Communication and Technology
;
傳播與科技學系
本期為喀報330期，共計七篇文章，包含三篇影音新聞，兩篇文化現象，一篇社會議題，一篇人物特寫。本期頭題為李芝謙的〈ASMR與現代人親密感〉，將較爲抽象的ASMR用影音具體呈現。本期題材多元，身歷其境的影音新聞和活潑生動的圖表新知識，為108學年度上學期劃下句點。
ASMR與現代人親密感
(2019-12-29)
李芝謙
;
Department of Communication and Technology
;
傳播與科技學系
【具有療癒魔力的輕聲呢喃】專題

你知道什麼是ASMR嗎？這是世界上最熱門的YouTube影片類型之一。不知道的話趕緊點進來看看吧！用三分鐘的時間了解，究竟ASMR為什麼能在網路世界造成一股旋風呢？
台灣同志求子記──台灣同志家庭可以合法進行人工生殖嗎？
(2019-12-29)
蕭蕙崎
;
Department of Communication and Technology
;
傳播與科技學系
【同婚過後好孕到？台灣同志家庭的生育困境】專題

在2019年5月24日，台灣正式成為世界第26個，也是亞洲第1個同性婚姻合法化的國家，這件事對於同志族群平權而言是一大邁進，不過仍有許多法規的限制需要去調整，以完善現行狀況。
氣候危機是進行式，非未來式！
(2019-12-29)
鄧萱妤
;
Department of Communication and Technology
;
傳播與科技學系
【地球只有一個】專題

本圖表將專題中文字報導視覺化，將多元切入點以比較的方式凸顯氣候危機的緊急性。
高中的教師　旅行的學生－專訪鄭涵倩
(2019-12-29)
曾冠霖
;
Department of Communication and Technology
;
傳播與科技學系
是教師，也能同時是學生，學無止盡，也無限於對象，鄭涵倩在高中擔任國文教師的同時，也當旅行的學生。
關於台灣都市原住民
(2019-12-29)
施詞萱
;
Department of Communication and Technology
;
傳播與科技學系
【新生代！都市原住民與部落的距離】專題

透過數據以及圖表方式呈現，帶您了解現今台灣都市原住民的社會現象。
美麗=鈔票？　Ins風產業背後
(2019-12-29)
沈品妤
;
Department of Communication and Technology
;
傳播與科技學系
【Ins風的美麗與哀愁】

當審美風格發展成熟，便可以成為商家賺錢的工具，不再只是種單純的流行文化。本篇報導將訪問ins風相關產業的人士，為大家揭開由精緻完美照片構成的花花世界背後，也來入探討：ins風，真的是大勢所趨嗎？
Vortex-induced vibration wind energy harvesting by piezoelectric MEMS device in formation
(2019-12-31)
Lee, Yin Jen
;
Qi, Yi
;
Zhou, Guangya
;
Lua, Kim Boon
;
機械工程學系
A silicon chip integrated microelectromechanical (MEMS) wind energy harvester, based on the vortex-induced vibration (VIV) concept, has been designed, fabricated, and tested as a proof-of-concept demonstration. The harvester comprises of a cylindrical oscillator attached to a piezoelectric MEMS device. Wind tunnel experiments are conducted to measure the power output of the energy harvester. Additionally, the energy harvester is placed within a formation of up to 25 cylinders to test whether the vortex interactions of multiple cylinders in formation can enhance the power output. Experiments show power output in the nanowatt range, and the energy harvester within a formation of cylinders yield noticeably higher power output compared to the energy harvester in isolation. A more detailed investigation conducted using computational fluid dynamics simulations indicates that vortices shed from upstream cylinders introduce large periodic transverse velocity component on the incoming flow encountered by the downstream cylinders, hence increasing VIV response. For the first time, the use of formation effect to enhance the wind energy harvesting at microscale has been demonstrated. This proof-of-concept demonstrates a potential means of powering small off-grid sensors in a cost-effective manner due to the easy integration of the energy harvester and sensor on the same silicon chip.
Low-Complexity High-Resolution Parameter Estimation for Automotive MIMO Radars
(2020-01-01)
Lin, Yu-Chien
;
Lee, Ta-Sung
;
Pan, Yun-Han
;
Lin, Kuan-Hen
;
交大名義發表
In this paper, we propose a parameter estimation method for multiple-input-multiple-output (MIMO) automotive radars that consists of two stages. The first stage is a low-complexity three-dimensional (3D) constant false alarm rate (CFAR) detection technique that exploits spatial filtering to extend radar coverage, and it performs low-complexity peak detection. The second stage is an ESPRIT-based direction-of-arrival (DOA) estimation technique that adopts time & x2013;frequency resource division to generate high-quality snapshots and it performs DOA estimation of targets without the knowledge of the target number. Computer simulations reveal that the proposed method achieves the performance of the two-dimensional ordered statistic CFAR (2D OS-CFAR) while having much lower computational complexity, and it offers the higher resolution DOA estimation compared to the conventional MIMO radars.
Design and Initial Evaluation of a VR based Immersive and Interactive Architectural Design Discussion System
(2020-01-01)
Hsu, Ting-Wei
;
Tsai, Ming-Han
;
Babu, Sabarish, V
;
Hsu, Pei-Hsien
;
Chang, Hsuan-Ming
Design discussion is a very important course in architecture education. In this paper, we developed a VR based architecture design discussion system that allows members to visualize and discuss the architectural models and to modify the models during discussion. Since the system is designed to work on top of Rhinoceros and Grasshopper, the object database is updated right after the object modification. Members communicate via voice, object manipulations, and mid-air sketching as well as on-surface sketching in the virtual environment. Several tools have been designed to enhance the sense of presence and to make the discussion more effective. We also developed a rollback mechanism to help users intuitively and quickly revert to a previous state of discussion to make some changes or to start a new direction of discussion. To evaluate the system, we conducted an initial user study with 14 participants to assess the user experience, user impression and effectiveness of the system. The feedback from participants were positive and suggested that the system could be effective and useful for supporting architecture design discussion.
An Expected Win Rate-Based Real Time Bidding Strategy for Branding Campaign by the Model-Free Reinforcement Learning Model
(2020-01-01)
Shih, Wen-Yueh
;
Lu, Yi-Shu
;
Tsai, Hsiao-Ping
;
Huang, Jiun-Long
;
資訊工程學系
The bidding strategy plays the most important role to help the Demand Side Platforms (DSPs) making bidding decisions on a large number of bid requests in Real Time Bidding (RTB) to satisfy the different objectives of campaigns under the lifetime and budget constraints. In this paper, we focus on branding campaign whose objective is to obtain as many impressions as possible under the lifetime and budget constraints. To achieve the objectives of branding campaigns, we propose a novel expected win rate-based bidding strategy for branding campaign under the lifetime and budget constraints by utilizing a model-free reinforcement learning model. Specifically, to prevent missing good opportunities resulting from submitting extremely low bid prices, the concept of the base winning price is introduced to determine the lower bound of expected winning price. In addition, to obtain more impressions, the concept of the DSP-specified budget spending plan is proposed to determine the proper winning prices. The base expected win rate is then calculated based on the base winning price and the winning price determined by the DSP-specified budget spending plan. Since RTB is a dynamic environment, we propose a novel expected win rate-based bidding strategy named EWDQN which utilizes Deep Q Network (DQN) to dynamically determine the expected win rate according to the base expected win rate and the current status of the RTB market, and then determines the bid price according to the expected win rate. To the best of our knowledge, this is the first research applying the reinforcement learning technique on the bidding strategies for branding campaign. To measure the performance of EWDQN, several experiments are conducted on two real datasets. Experimental results show that EWDQN outperforms the-state-of-the-art bidding strategies for branding campaign in terms of the number of obtained impressions and CPM (cost per thousand impressions).
Using Wireless Near-Infrared Spectroscopy to Predict Wound Prognosis in Diabetic Foot Ulcers
(2020-01-01)
Lin, Bor-Shyh
;
Chang, Chang-Cheng
;
Tseng, Yuan-Hsi
;
Li, Jhe-Ruei
;
Peng, Yun-Shing
OBJECTIVE: To use wearable near-infrared spectroscopy (NIRS) to determine the effect of Buerger exercises on diabetic foot ulcer (DFU) healing. METHODS: Study authors enrolled 50 consecutive patients in a 1-year prospective observational study of DFUs. The patients were divided into groups by their arterial statuses: group A (no peripheral arterial disease [PAD]), group B (PAD without angioplasty), and group C (PAD with angioplasty). Tissue perfusion was assessed through wireless wearable NIRS to determine the effects of Buerger exercises on wound healing. MAIN RESULTS: The patients in group C were older, were more likely to have had an amputation, and had more severe wounds than did the patients in other groups. The requirements of insulin injection for diabetes mellitus control differed significantly (P=.024) among the three groups. At the end of the survey, 19 patients (38%) had unhealed DFUs. The NIRS revealed that most nonhealed patients in groups B and C shared higher resting hemoglobin levels and tissue blood volume and lower tissue oxygen concentration, which indicated inflammation accompanied by higher blood flow and oxygen consumption. Notably, the nonhealed patients in group C showed paradoxically reduced hemoglobin and tissue blood volume after the exercises. CONCLUSIONS: Although DFUs remain a challenge to treat, NIRS may prove valuable in predicting wound healing by identifying risk factors for poor wound prognosis, such as reduced hemoglobin and tissue blood volume after exercise.
Neurosurgical brain tumor detection based on intraoperative optical intrinsic signal imaging technique: A case report of glioblastoma
(2020-01-01)
Liu, Xin-Rui
;
Hsiao, Tien-Yu
;
Li, Yun-Qian
;
Chiu, Kai-Shih
;
Huang, Chun-Jung
The delineation of brain tumor margins has been a challenging objective in neurosurgery for decades. Despite the development of various preoperative imaging techniques, the current methodology is still insufficient for clinical practice. We present an intraoperative optical intrinsic signal imaging system for brain tumor surgery and establish a data processing procedure model to localize tumors. From the experimental result of a glioblastoma patient, we observe a relative small oscillation of Delta HbD in tumor region and speculate that vessels in tumor region have poor ability to provide oxygen. We applied the same data processing procedure on the second time data and proclaimed a successful surgery. Figure: Merged Delta HbD image captured prior and posterior to tumor removal.
Microscopic Traffic Monitoring and Data Collection Cloud Platform Based on Aerial Video
(2020-01-01)
Chen, Guan-Wen
;
Yeh, Tzu-Chuan
;
Liu, Ching-Yu
;
Ik, Tsi-Ui
;
資訊工程學系
Real-time traffic video streaming, such as roadside surveillance and aerial video, has been widely used in traffic monitoring nowadays. However, most of the traditional traffic data collection methods lack mobility that can only collect macroscopic data. In this paper, an intelligent traffic monitoring system based on an open source cooperative platform called SAGE2 was developed. Based on the integrated big screen TV wall of SAGE2, a map-based aerial traffic video streaming management interface was designed. In the image pre-processing section, it provides functions such as lens distortion removal, top view projection transforms, and video stabilization; simulate video streaming to provide instant and long-term micro-flow data collection. Micro-traffic flow data provides high-resolution information both in time and space which can be used to analyze the driving behavior of individuals and the public. Combined with the lane level map, it can provide a variety of visual vehicle flow presentations, such as intersection traffic distribution that can also be used to develop an innovative application in the future.
CSP-LEDs Combined With Light Guide Without Reflective Matrix for Antiglare Design
(2020-01-01)
Ye, Zhi Ting
;
Ruan, Moujay
;
Kuo, Hao-Chung
;
光電工程學系
;
光電工程研究所
This study proposed a model with different luminous intensity profiles without reflective matrix bar for light fixtures that used asymmetric luminous intensity(ALI) CSP-LEDs (Chip Scale Package-Light emitting diode) combined with light guide as light source module, and analyzed illumination uniformity and unified glare rating (UGR) performance by using a classroom as an example. The study constructed a model of light fixture use in classrooms. Four important parameters affect the comfort of human eye that include UGR, illumination, uniformity of spatial and light distribution of light fixture, in particular, light distribution of light fixture was major affect factor for direct glare. Therefore, light fixture designers previously used many diverse structures to prevent glare, but which will result in a loss of light fixture efficiency about 25%-35% that caused by material absorption and ray loss. This study proposed used ALI CSP-LEDs combined with light guide as light source to optimize different light distribution angles without attached reflective matrix bar or second optical lens on light fixture to simulate a light fixture in a classroom and to evaluate UGR, illumination and uniformity values. We also consider the light fixture tilt angle caused effect of UGR and uniformity. On the basis of the simulation and experimental results, ALI CSP-LEDs beam angle relative to vertical and horizontal axes were 150 degrees and 120 degrees, respectively, the light distribution profile for a beam angle 90 degrees provided the highest illumination uniformity and a UGR of less than 19. Thus, light fixtures with a light distribution angle of beam angle 90 degrees supply human-friendly for anti-glare lighting.
專案融資運用於武器研製之研究－系統動態觀點
(國立交通大學經營管理研究所, 2020-01-01)
劉代洋
;
汪家淦
;
方崇懿
;
劉培林
;
Day-Yang Liu
國防主要武器裝備（Major Defense Equipment, MDE）自製包含自主研發、生產與構成武器產業鏈等三方面，藉由發展國防亦可同步提升國家的產業競爭力。MDE自製以軍用目的為導向，具複雜度高、整合度強、資本投資大、技術門檻高與回收期長等特性，除了政府整體規劃與政策的推動外，也需要民間廠商參與，然而民間廠商普遍存在財力條件不足之情況，常需藉由專案融資（Project Financing）取得所需資金。專案融資需具備高度專業及評估能力，而國內銀行長期缺乏專案建造、營運技術等評估能力與經驗，將影響融資風險控管，專案融資亦可能遭到廠商挪用，最後將會影響軍購的履約。因此，專案融資在MDE自製中扮演重要角色，強化MDE自製專案融資的治理工作及系統管理是重要議題。MDE自製與專案融資需考量因素很多，各種因素彼此相互影響、互為因果、環環相扣，利害關係人包含政府、民間廠商與銀行之間互動關係動態複雜，必須以整體與結構性的系統觀點來思考，較能瞭解問題的全貌，進而提出適切的政策。然少有文獻以系統觀點探討MDE自製與專案融資的研究，因此本研究採用系統動態學方法論，以系統思考建構臺灣MDE自製與專案融資質性系統動態分析模式，從政府、民間廠商與銀行三個利害關係人的角度，闡述MDE自製與專案融資因素之因果互動關係，提出改善系統結構之建議，提供決策者政策制訂之參考。
Efficiency of Life Insurance Companies: An Empirical Study in Mainland China and Taiwan
(2020-01-01)
Shieh, Hwai-Shuh
;
Hu, Jin-Li
;
Ang, Yong-Ze
;
交大名義發表
;
National Chiao Tung University
The study employs metafrontier and four-stage data envelopment analysis (DEA) to measure the overall and individual efficiency of life insurance companies in mainland China and Taiwan, after applying the slack-based measure (SBM)-DEA model to adjust the differences in the operating environment across production units. The empirical findings show the following: (a) The environmental factors significantly affected the efficiency of all life insurance companies. After the adjustments, the efficiency score of life insurance companies in mainland China and Taiwan drops for 14.01% and 26.64% in regional frontier, and 38.31% and 12.22% in metafrontier frontier. (b) Before 2008, the life insurance companies in Taiwan are more efficient than those in mainland China.
Kuo Pao Kun and his theatre
(Routledge, 2020)
S. R. Quah
Shaping and positioning of topological defects in nematic liquid crystal cells equipped with patterned electrodes
(2020-01-01)
Tsung, Jieh-Wen
;
Chen, Bo-Yao
;
Wang, Ya-Zi
;
電子物理學系
;
Department of Electrophysics
Generation of topological defect that has a particular type (topological charge) and specific shape (radial, spiral, or circular) on a designed position is a crucial step in producing q plates and defect-mediated self-assembled micro structures. Shaping and positioning of topological defects can be achieved by applying delicately designed electric field on nematic liquid crystal (NLC). The guidelines for the electrode design are provided in this paper. The following are the three frequently asked questions: 1) What kinds of defects can exist in NLC? Points, lines, or walls? 2) How to generate a defect with a particular topological charge by setting proper boundary condition? 3) How to control the orientation of liquid crystal to have a defect with desired vorticity? The three questions can be answered by the three theories in physics: 1) Symmetry breaking in ordered material, 2) Euler characteristic and vectors in closed confinement, and 3) Minimization of free energy of NLC in electric field. Topological defects in spherical and toroidal confinements were generated in NLC cell and examined under polarized microscope. Radial and circular hedgehog defects were successfully created by fishbone- and coil-shaped patterned electrodes, respectively. By applying the three physical theories in NLC cell design, topological defects were successfully arranged in square and hexagonal arrays. They are large, stable, and re-configurable, and the applications in optics are demonstrated.