Browsing by Issue Date, starting with "2014-10-10"

Now showing 1 - 20 of 25326

Research of accommodative microfluctuations caused by visual fatigue based on liquid crystal and laser displays
(2014-10-10)
Jeng, Wei-De
;
Ouyang, Yuan
;
Huang, Ting-Wei
;
Duann, Jeng-Ren
;
Chiou, Jin-Chern
Different levels of visual fatigue in the human eye depend on different color-formation methods and image quality. This paper uses the high-frequency component of the spectral power of accommodative microfluctuations as a major objective indicator for analyzing the effects of visual fatigue based on various displays, such as color-formation displays and 3D displays. Also, a questionnaire is used as a subjective indicator. The results are that 3D videos cause greater visual fatigue than 2D videos (p < 0.001), the shutter-type 3D display causes visual fatigue more than the polarized type (p = 0.012), the display of the time-sharing method causes greater visual fatigue than the spatial-formation method (p = 0.008), and there is no significance between various light source modules of displays (p = 0.162). In general, people with normal color discrimination have more visual fatigue than those with good color discrimination (p < 0.001). Therefore, this paper uses the high-frequency component of accommodative microfluctuations to evaluate the physiological stress or strain by overexerting the visual system, and can compare the level of visual fatigue between various displays. (C) 2014 Optical Society of America
Simulation and comparison of the illuminance, uniformity, and efficiency of different forms of lighting used in basketball court illumination
(2014-10-10)
Sun, Wen-Shing
;
Tien, Chuen-Lin
;
Tsuei, Chih-Hsuan
;
Pan, Jui-Wen
;
光電系統研究所
We simulate and compare the illuminance, uniformity, and efficiency of metal-halide lamps, white LED light sources, and hybrid light box designs combining sunlight and white LED lighting used for indoor basketball court illumination. According to the optical simulation results and our examination of real situations, we find that hybrid light box designs combining sunlight and white LEDs do perform better than either metal-halide lamps or white LED lights. An evaluation of the sunlight concentrator system used in our inverted solar cell shows that the energy consumption of stadium lighting can be reduced significantly. (C) 2014 Optical Society of America
Design and analysis of wearable pupillometer for autonomic neuropathy of diabetic patients
(2014-10-10)
Ko, Mei-Lan
;
Chen, Yin-Yuan
;
Ouyang, Yuan
;
Huang, Ting-Wei
;
Tsuen, Bi-Shiou
Diabetes is a familiar disease in modern society. In the early stage of diabetes, symptoms are unobvious, but they usually induce diabetic autonomic neuropathy or, worse, cardiovascular autonomic neuropathy. Pupillometers are effective instruments for observing human pupils. This article presents a novel wearable pupillometer design, without external light artifacts, and an embedded algorithm with blinking elimination, which investigates autonomic neuropathy through recording pupil dynamics triggered by an external sensitive invisible light source. The pupillometer is experimented on 36 healthy subjects and 10 diabetic patients under four different colors (white, red, green, and blue) as well as two different light intensities: 50 and 500 mcd. Ten parameters derived from pupil diameter, pupil response time, and pupil response speed will be evaluated for the healthy subjects and diabetic patients. The results show that three in four parameters related to pupil diameters, one in four related to light intensities, and one in two related to pupil response speed could have significant differences (p < 0.05) between healthy subjects and diabetic patients. These parameters obtain over 85% sensitivity, 83% specificity, and 88% accuracy. The pupillometer is proven reliable, effective, portable, and inexpensive for diagnosing diabetes in an early stage. (C) 2014 Optical Society of America
Noncollinear ferrimagnetic ground state in Ni(NO3)(2)
(2014-10-10)
Volkova, O. S.
;
Mazurenko, V. V.
;
Solovyev, I. V.
;
Deeva, E. B.
;
Morozov, I. V.
Both spin-liquid and magnetically ordered phases of both half-integer and integer low-spin quantum magnets are of interest, since the magnetic structures found in the latter case usually have no classical counterparts. Such a magnetic structure was found in a combined experimental and theoretical study of the integer spin system Ni(NO3)(2). Our thermodynamic measurements have revealed a magnetically ordered phase with small spontaneous magnetization at T-C = 5.5 K. The magnetization saturation of about 2 mu(B) at low temperatures corresponds to the high-spin state (S = 1) of Ni2+ ions evidenced in L-2,L-3 edges in x-ray absorption spectroscopy spectra. We show that a consistent description of the available data is possible within a noncollinear umbrella-type ferrimagnetic ground state model for which both intra-and interlayer magnetic interactions should be antiferromagnetic. Such a scenario is suggested by the first-principles and model calculations.
Compact LED projector design with high uniformity and efficiency
(2014-10-10)
Sun, Wen-Shing
;
Tien, Chuen-Lin
;
Ma, Chao-Hui
;
Pan, Jui-Wen
;
光電系統研究所
The aim of this study is to design a compact LED projector that is divided into two systems: an illumination system and an imaging optical system. The illumination system consists of an RGB LED light source with a collimator lens group and a mirror with a color filter and a lens array integrator instead of an integrated rod so as to improve the uniformity of the light intensity. By using a new total internal reflection prism and projection lens, the whole optical engine is smaller in size and has a higher contrast ratio for image quality. The imaging optical system consists of a total of eight lenses (six spherical lenses and two aspherical lenses), for a total length of 52 mm; a tolerance analysis is conducted. Optical simulation software is used for the system analysis in order to determine the efficiency and uniformity of the light intensity. In this design, the uniformity of the screen reaches more than 82%, and the efficiency increases by more than 44%. (C) 2014 Optical Society of America
融合人臉辨識及語音辨識之身份辨識系統、其方法及其服務型機器人
(2014-10-11)
宋開泰
;
簡碩成
;
林昭宇
;
陳奕彣
;
陳信宏
本發明係揭露一種融合人臉辨識及語音辨識之身份辨識系統、其方法及其服務型機器人。此系統採用人臉辨識及語音辨識兩方的結果經過融合計算後產生最終結果。另外，此系統能藉由信心指數評估人臉辨識及語音辨識兩方辨識結果的可信度，若信心指數超出門檻值更納入融合計算。若只有一方的信心指數超過門檻值就只採納一方的結果做為輸出，如果兩方都超出門檻值則使用融合演算法輸出結果。
移動預測方法
(2014-10-11)
林一平
;
皇甫建君
本發明係揭露一種移動預測方法，其係利用在複數基地台所涵蓋之複數相鄰之通訊細胞間移動與通訊之至少一通訊電話，於一預測時段內，對使用通訊電話之人口移動進行預測。首先，擷取在一天中，通訊電話於每一通訊細胞產生之一話務量，與通訊電話在通訊細胞交遞移動所產生之一交遞資訊。接著，計算話務量及交遞資訊，以得到一天內在不同之時段中，人口在通訊細胞間移動之移動機率，及人口在每一通訊細胞涵蓋之區域之一平均停駐時間。最後，依據求得之資料，預測在預測時段之時間終點時，人口出現在每一區域之一出現機率，進而達到人口移動預測。
磁性奈米複合材料及其製造方法及應用
(2014-10-11)
李耀坤
;
詹富全
;
黃靜萍
本發明之一種磁性奈米複合材料，包括至少一磁性奈米粒子、一修飾層、一配位基團以及一高分子包覆層。修飾層係包括複數矽烷基團，並包覆至少部分磁性奈米粒子，且修飾層具有複數凹部。配位基團係連結於修飾層之凹部。高分子包覆層係連結修飾層。本發明另提供一種磁性奈米複合材料之製造方法以及磁性奈米複合材料應用於蛋白質之純化。
全像式集光元件及其製法
(2014-10-11)
謝美莉
;
林尚佑
;
許根玉
;
林烜輝
數位類比轉換電路及其權重誤差估測與校正方法
(2014-10-11)
洪浩喬
;
王毓賢
生物檢測裝置及檢測方法
(2014-10-11)
林怡欣
;
朱為麟
;
吳麗卿
本發明係揭露一種生物檢測裝置及檢測方法，係用以檢測三酸甘油酯或高密度膽固醇等生物檢體。此檢測裝置包含基板、電場單元、液晶聚合物薄膜、電源供應器、處理單元及影像感測器。透過控制橫向電場之強度分佈，可使液晶聚合物薄膜表面之液晶分子轉向，以達到薄膜表面親疏水特性的控制，藉以驅動生物檢體移動並觀察運動型態，最後得到此檢體的生理資訊。藉由觀察血清溶液接觸角的改變與運動來得知不同三酸甘油酯及高密度膽固醇濃度。
獨立成分分析處理器
(2014-10-11)
陳秋國
;
方偉騏
;
李鴻溝
;
傅致中
;
曾少彥
一種獨立成分分析處理器，係用以對多通道平行信號進行即時獨立成分分析(independent component analysis)之運算，包括接收及儲存該多通道平行信號之輸入記憶體單元、平均與共變異單元、去除該多通道平行信號中的直流成分之中心化單元、進行白化處理之白化單元、及進行獨立成分分析運算之ICA訓練單元和ICA計算單元，俾計算出該多通道平行信號之獨立成分，以分離出信號中的雜訊。據此，藉由本發明之運用，得以實現以低成本及低複雜度之硬體即時進行獨立成分分析運算之功效。
古典音樂　貫穿電影的旋律
(2014-10-12)
陳亞柔
;
Department of Communication and Technology
;
傳播與科技學系
古典音樂以配樂形式融入現代電影，不但增添場景氣氛，也烘托演員演技，和觀眾產生新的互動，呈現全新風貌。
廣告寵兒　部落行銷客
(2014-10-12)
張凱翔
;
Department of Communication and Technology
;
傳播與科技學系
部落格中充斥著各類產品的置入性行銷，探討部落客與廣告商之間，相互依存的商業行銷關係。
大幕升起　體驗不同人生
(2014-10-12)
杜以翔
;
Department of Communication and Technology
;
傳播與科技學系
將對戲劇的喜歡化為文字記錄下來，而當下次大幕升起，戲癮上身。
無題
(2014-10-12)
黃美恩
;
Department of Communication and Technology
;
傳播與科技學系
托斯卡尼　不同的生活態度
(2014-10-12)
查爾灣.米吉
;
Department of Communication and Technology
;
傳播與科技學系
當人生遭遇挫折不知道如後走下去時，來到【托斯卡尼的艷陽下】，讓它教你人生哲理，學習它的處世待人。
老調不重彈　和風新搖滾
(2014-10-12)
賴奕安
;
Department of Communication and Technology
;
傳播與科技學系
三味線與吉他，太鼓與爵士鼓，融入濃濃東洋味的新形態搖滾樂。
紙片人退燒　健康美正夯
(2014-10-12)
黃詩涵
;
Department of Communication and Technology
;
傳播與科技學系
講述紙片模特兒潮流的退燒，而另一股「微肉感」與「精壯美」的風潮正在流行。
人聲無極限　哼唱音樂符號
(2014-10-12)
許鴻財
;
Department of Communication and Technology
;
傳播與科技學系
只有人聲，無任何樂器伴奏，演唱者重新編排音符，簡單伴奏加以哼唱歌曲旋律，聆聽純淨真摯的原味人聲。