35,853 research outputs found
The political role of the people's liberation army 1949-1973
No full textThis thesis is to study the political role of the People's Liberation Army from the approach of structure and function. The framework of the thesis consists of three major parts, first, the influence of Chinese traditional political culture on, and the formation of, the political role of the PL A; second, the influence of domestic political struggles and external military conflicts on the development of the political role of the PLA; and the third, the analysis of the transition of the PLA's political role from the structure and personnel arrangements of the CCPCC Within the above-mentioned three scopes, this thesis make a thorough discussion on the following: (1) The relationship between the structure of the PRC and the formation of the PLA's political role; (2) How has ideology influenced the army's political role; (3) What is Mao's viewpoint and his influence on the development of the army's political role; (4) What is the link between the army and the party, and how has this developed; (6) What accounts for the expansion of the PLA's political functions; (7) What is the influence of political factional struggles on the PLA's political role; (8) Is it political institution or military institution that controls the recruitment of the military elite; (9) What are the disparities between the military elite in handling international conflicts and what are their political considerations; (10) What is the Party's position in the army; (11) How have the Party’s important meetings and personnel arrangements influenced the rise and fall of the PLA's political role
Scaling to submicron for III-nitride optoelectronic devices: Applications in micro light emitting diodes and resonant tunneling diodes
No full textSubmission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01The student, Yu-Chieh Chiu, accepted the attached license on 2025-04-25 at 12:44.The student, Yu-Chieh Chiu, submitted this Dissertation for approval on 2025-04-25 at 12:59.This Dissertation was approved for publication on 2025-04-30 at 16:54.DSpace SAF Submission Ingestion Package generated from Vireo submission #21974 on 2025-10-19 at 19:54:04III-Nitride-based optoelectronic devices have a broad range of applications, from solid state lighting, displays and advanced light sources, to communications and sensing. Micro-LEDs enables next generation displays for virtual and augmented reality, visible light communications, and advanced light sources due to their scalability, high speed, high luminance, and long lifetimes amongst other befits compared to existing technologies. While III-Nitride-based resonant tunneling diodes (RTD) pave way for reliable room temperature THz emitters for security, sensing, imaging, and communications. This thesis first investigates efficiency measurements and demonstrates a method to determine the absolute internal quantum efficiency of LEDs. Structural and optical studies were coupled with a channel-based recombination model to determine the absolute IQE of LEDs. Next, the challenges and development of the fabrication process for sub-micron III-Nitride devices (LEDs and RTDs) are discussed. An electron beam lithography-based fabrication process was developed for mesa formation, oxide opening, and contact metallization/liftoff. Fabrication of electrically injected sub-micron LEDs and RTDs are demonstrated. The properties of the smallest sub-micron top-down fabricated LEDs down to 500 nm is studied. Finally, properties of sub-micron RTDs are studied, demonstrating repeatable negative differential resistance in cubic III-Nitride (AlGaN) based RTDs
Absolute internal quantum efficiency of indium-gallium nitride based light-emitting diodes
No full textSubmission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01The student, Yu-Chieh Chiu, accepted the attached license on 2022-12-01 at 13:26.The student, Yu-Chieh Chiu, submitted this Thesis for approval on 2022-12-01 at 15:00.This Thesis was approved for publication on 2022-12-05 at 16:37.DSpace SAF Submission Ingestion Package generated from Vireo submission #18718 on 2023-04-12 at 11:36:42This thesis presents a method to the reveal the absolute internal quantum efficiency of InGaN-based light-emitting diodes (LEDs). InGaN-based light emitting diodes are the backbone of modern high efficiency solid-state lighting, with emerging applications in areas such as next-generation displays for augmented and virtual reality (AR/VR), visible light communications, and bio-optoelectronics. Out of all the quantitative metrics used to characterize LEDs, efficiency is one of the key metrics. State-of-art blue LEDs reach >70% power conversion efficiency from electrical to optical power, but continual improvements are needed to achieve the Department of Energy’s projected efficiency goals, allowing for more energy and CO2 emission savings. Internal quantum efficiency (IQE) is one of many constituent efficiency metrics; it sets the upper-bound of efficiency and is affected by material quality (e.g. defect density) and stack design (e.g. layer thickness). Despite the importance of IQE, there are challenges and possibly erroneous assumptions with current techniques used to measure it. This thesis will first provide an overview of LEDs, including operational principles, efficiency metrics, and a need for an absolute efficiency metric. Next, the theoretical formulation of the method to determine the absolute IQE is discussed, followed by a brief interlude on experimental setup. The structural properties of the LEDs are studied via optical, scanning electron, and atomic force microscopies, X-Ray diffraction, and Raman spectroscopy. Next, optical (via temperature-, time- and power- dependent photoluminescence) properties of InGaN-based blue LEDs are coupled with a channel-based recombination model, to determine the absolute IQE of the LEDs and correlate with their respective structural properties
Investigation of flow pattern and upwelling characteristics near the wakes of Liu-Chiu-Yu Island
No full textThe objective of this study is to investigate and characterize the mechanism of the island wake behind an island called Liu Chiu Yu off the southwestern Taiwan coast based on the in-situ data of Sb-ADCP, CTD and satellite images. The findings suggest that a counter-clockwise eddy and a clockwise eddy both are with 0.01 S vortice appears in the wake of Liu Chiu Yu when the background flows are toward the northwest. The system of two eddies with opposite rotation and a central return flow develops an unsteady eddy shedding. On the other hand, when the background flows are toward the southeast, island wake generated in the lee of Liu Chiu Yu is attached system of two eddies with opposite rotation and a central return flow.
The Sb-ADCP data shows that the flow pattern in the northeastern coast of Liu Chiu Yu is mainly semidiurnal. The major axis of the ellipse of the semidiurnal current is parallel to the orientation of the coast line (northeast to southwest) and the shape of the ellipse is quite long and narrow. The amplitude of the semidiurnal current is approximately two times that of the diurnal current. Generally, the currents are stronger and the occurring probability of the island wake is higher during spring tide.
The CTD data shows that the eddy center appears to be divergent and upwelling occurs in the areas under the influence of island wakes. The upwelling pumps deep seawater to the surface and results in low temperature, high salinity, high oxygen concentration and low chlorophyll concentration. On the other hand, in the eddy edges, downwelling occur causing high temperature, low salinity, low oxygen concentration and high chlorophyll concentration. Strong shear was formed at the depth of 60m inside the island wake which generates thermocline so that the mixing phenomenon is quite obvious there. Moreover, in the regions without the influence of island wakes, the stratifying effect is clear and the horizontal variation of temperature, salinity and oxygen concentration is small. Therefore, neither upwelling nor downwelling occurs there. Furthermore, along the edge between blocking and free-stream areas, the shear stress increases and the mixing phenomenon arises to a certain degree.
The satellite images show that an island wake appears in the southeastern Liu Chiu Yu during spring tide. The island wake develops a phenomenon called von Karman vortex street. At the same time, a counter-clockwise eddy with heavy suspensions appears in the northern Liu Chiu Yu. The radius of the eddy is around 4 Km. The area of the lowest chlorophyll concentration is located at the center of the eddy. By analyzing all these data, it is concluded that the island wake in Liu Chiu Yu usually appears during spring tide
Additional description on morphology of the Misol snake eel from Taiwan, with four verified barcodes of life sequences
No full textChiu, Yung-Chieh, Chen, Hong-Ming, Shao, Kwang-Tsao (2022): Additional description on morphology of the Misol snake eel from Taiwan, with four verified barcodes of life sequences. Zootaxa 5189 (1): 114-121, DOI: https://doi.org/10.11646/zootaxa.5189.1.1
臺灣產福姬蜂亞科之分類（膜翅目：姬蜂科）
No full textThe subfamily Phrudinae of Ichneumonidae has not been recorded from Taiwan. This paper presents 5 genera and 11 species from this island. Two known species, Phrudus monilicornis Bridgman and Earobia paradoxus Perkins are new to Taiwan, and 9 species namely Brachyscieroma townesi Chiu, B. umbilici Chiu, Lygurus marjoriae Chiu, Phrudus longius Chiu, P. montanus Chiu, P. angustus Chiu, P. linorum Chiu, Astrenis granum Chiu, and A. densa Chiu are new to science.
福姬蜂亞科(Subfamily Phrudinae)乃姬蜂科中之一小科。體型甚小，僅知其係甲蟲類民蟲之內寄生(internal parasitoid)。該亞科妒蜂全球記載10屬(genus)，零星分布於舊北區（Palearctic Region )，新北區(Nearctic Region)，新熱帶區(Ethiopian Region)，及東洋區(Oriental Region)。本省尚無記錄。
本文記載本省產之福姬蜂亞科5囑、11種內合2新記錄種(new record), Phrodus monilicornis Bridgman 與Earobia paradoxus Perkins，及9新種(new species)，分別為Brachysleroma townesi Chiu, B. umbilici Chiu; Lygurus marjoriae Chiu; Phrudos longius Chiu, P . montanus Chiu, P. angustos Chiu, P. linorum Chiu; Astrenis granum Chiu 及A. densa Chiu.全部標本均從本省高山森林用掃網採得，而L. marjoriae Chiu 與E. paradoxus Perkins 係借自美國昆蟲學研究所，其餘標本均保存於臺灣省農業試驗所昆蟲標本館
Production and Innovation in Photovoltaic Industry
No full text本研究以美國專利商標局在1966-2006年期間所核准的太陽光電專利資料，分析全球太陽能產業的生產與創新。我們首先探討太陽能光電技術的發展歷程，並將太陽光電技術發展分作四個時期，分析全球主要太陽光電國家與廠商的專利表現。此外，我們還以全球前二十大太陽光電生產廠商為研究對象，分析其生產與創新的模式並討論他們將專利運用在實際生產面的效率性。
我們發現全球太陽能光電專利分別為太陽光電技術的先進國-美國、日本與德國，以及後進國-韓國、台灣與中國所擁有，其中美國與日本兩國的技術能力更是遠遠超過其他國家。我們還觀察全球前二十大太陽光電生產廠商的生產與創新行為，發現依照廠商的創新模式可將其分成三類，即(1)有生產且創新表現多，(2)有生產但創新表現少，(3)有生產但無任何創新表現。最後，針對我們台灣太陽光電產業生產與創新的情況進行分析，並提出建言。This study analyzes the production and innovation in the global photovoltaic industry by use of the patenting data in the U. S. Patent and Trademark Office (USPTO) between 1966 and 2006. First, we discuss the development in the field of photovoltaic technology by separating time into four durations, and then analyze the patenting performances of the world’s leading countries and firms. In addition, we take the world''s top 20 largest solar manufacturers as the object of study to analyze how they produce and innovate and discuss the efficiency of applying their patent into the actual production.
We find that the global photovoltaic patents belong to the forerunners - the United States, Japan and Germany, and latecomers - South Korea, Taiwan and China, with the U.S. and Japan two technical abilities are far more than other countries. By analyzing the world''s top 20 largest solar manufacturers’ production and innovation, we also find they can be divided into three categories, according the way they innovate and produce, namely：(1) perform outstandingly in both production and patenting, (2) outstanding production with few patents, (3) excellent production but no patent. Finally, we focus on the situation of Taiwan PV industry and offer some suggestions for future development
[Chiu-Hsiong Huang, conferred the Doctor of Philosophy in Business Administration degree, honoris causa]
No full textChiu-Hsiong (Charles) Huang, a member of the Board of Trustees of Feng Shia University and Yu Shung Commercial Bank in Taipei was conferred the Doctor of Philosophy in Business Administration degree, honoris causa during the Commencement Exercises, Third Trimester SY 1993-1994
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