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Semiclassical Axisymmetric Lattice Boltzmann Method

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Advances in Applied Mathematics and Mechanics 2010年第5期2卷 626-639页

作者： Jaw-Yen Yang Li-Hsin Hung Yao-tien Kuo Institute of Applied Mechanics National Taiwan UniversityTaipei 106TaiwanChina

A semiclassical lattice Boltzmann method is presented for axisymmetric flows of gas of particles of arbitrary *** method is first derived by directly projecting the Uehling-Uhlenbeck Boltzmann-BGK equations in twodimensional rectangular coordinates onto the tensor Hermite polynomials using moment expansion method and then the forcing strategy of Halliday et al.(***.E.,64(2001),011208)is adopted and forcing term is added into the resulting microdynamic evolution *** determination of the forcing terms is dictated by yielding the emergent macroscopic equations toward a particular target *** correct macroscopic equations of the incompressible axisymmetric viscous flows are recovered through the Chapman-Enskog *** of uniform flow over a sphere to verify the method are *** results also indicate distinct characteristics of the effects of quantum statistics.

关键词： Semiclassical lattice Boltzmann method axisymmetric flows flow over a sphere Bose gas Fermi gas

Flexible Wing Kinematics of a Free-Flying Beetle （Rhinoceros Beetle Trypoxylus Dichotomus）

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Journal of Bionic Engineering 2012年第2期9卷 177-184页

作者： tien Van Truong Tuyen Quang Le Doyoung Byun Hoon Choel Park Minjun Kim Department of Aerospace and Information Engineering Konkuk University Seoul South of Korea Department of Mechanical Engineering Sungkyunkwan University Suwon South of Korea Department of Advanced Technology Fusion Konkuk University Seoul South of Korea Department of Mechanical Engineering Drexel University Philadelphia Pennsylvania USA

Detailed 3-Dimensional （3D） wing kinematics was experimentally presented in free flight of a beetle, Trypoxylus dichotomus, which has a pair of elytra （forewings） and flexible hind wings. The kinematic parameters such as the wing tip trajectory, angle of attack and camber deformation were obtained from a 3D reconstruction technique that involves the use of two synchronized high-speed cameras to digitize various points marked on the wings. Our data showed outstanding characteristics of deformation and flexibility of the beetle＇s hind wing compared with other measured insects, especially in the chordwise and spanwise directions during flapping motion. The hind wing produced 16% maximum positive camber deformation during the downstroke. It also experienced twisted shape showing large variation of the angle of attack from the root to the tip during the upstroke.

关键词： beetle free flight 3D wing kinematics flexible hind wing wing deformation

TROPICAL VERTICAL GREENERY SYSTEMS:IRRIGATION SYSTEMS,BIOPHYSICAL CHARACTERISTICS,AND INFLUENTIAL CIRTERIA

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Journal of Green Building 2016年第4期11卷 57-90页

作者： Chen Wang Lincoln C.Wood Li tien Teo College of Civil Engineering Huaqiao UniversityXiamen361021P.R.China Faculty of Business and Law Auckland University of TechnologyPrivate Bag 92006Auckland 1142New Zealand School of Information Systems Curtin UniversityPerthAustralia Faculty of Built Environment University of Malaya50603Kuala LumpurMalaysia

Recent studies on vertical greenery systems(VGS)mainly focus on thermal perfor-mance,acoustics effects,energy savings and environmental *** are very few studies on tropical VGS irrigation systems,plants’characteristics,and favor-able installation locations,indicating that architectural professionals may lack suffi-cient guidance to support their design *** two descriptive case studies and a questionnaire survey of VGS-related professionals including gardeners,mechanical and electrical engineers,consultants,contractors,and developers,this research devel-oped a knowledgebase for tropical vertical greenery systems irrigation systems and determined the suitability of different types of vertical greenery systems according to the biophysical characteristics of *** suitability for various plant character-istics has been identified to help potential users while considering vertical greenery systems irrigation *** locations,orientations and microclimatic condi-tions for vertical greenery systems irrigation systems to prevent system failure have been *** research focused on establishing the technical requirements for irrigation scheduling is recommended to improve the application efficiency.

关键词： Vertical Greenery System(VGS) irrigation system building vegetation green facades tropics survey

Strong light–matter interaction in ZnO microcavities

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Light(Science & Applications) 2013年第1期2卷 128-134页

作者： Ying-Yu Lai Yu-Pin Lan tien-Chang Lu Department of Photonics National Chiao Tung UniversityHsinchu 300

The strong light–matter interaction in ZnO-embedded microcavities has received great attention in recent years,due to its ability to generate the robust bosonic quasiparticles,exciton-polaritons,at or above room *** review introduces the strong coupling effect in ZnO-based microcavities and describes the recent progress in this *** addition,the report contains a systematic analysis of the room-temperature strong-coupling effects from relaxation to polariton *** stable room temperature operation of polaritonic effects in a ZnO microcavity promises a wide range of practical applications in the future,such as ultra-low power consumption coherent light emitters in the ultraviolet region,polaritonic transport,and other fundamental of quantum optics in solid-state systems.

关键词： microcavity polariton strong coupling ZnO

Hemorrhagic blisters in fulminant Aeromonas hydrophila bacteremia: Case report and literature review

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Asian Pacific Journal of Tropical Medicine 2019年第2期12卷 91-94页

作者： Yao-tien Chang Sung-Yuan Hu Che-An Tsai Department of Emergency Medicine Taichung Veterans General Hospital Department of Nursing College of Health National Taichung University of Science and Technology School of Medicine Chung Shan Medical University Institute of Medicine Chung Shan Medical University Department of Nursing College of Nursing Central Taiwan University of Science and Technology Division of Infectious Disease Department of Internal Medicine Taichung Veterans General Hospital

The Aeromonas species, belonging to the family Aeromonadaceae, are opportunistic pathogens found in humans with an incidence rate of 76 cases per million inhabitants in Southern *** incidence of Aeromonas septicemia is relatively low, accounting for less than 15% of *** diagnosed with Aeromonas hydrophila bacteremia who were presented with skin blisters and septic shock have been reported to have a mortality rate of 100%.Aeromonas infection must be considered in the differential diagnosis of gangrene-like tissue damage or skin lesions in patients with end-stage renal disease, due to the potential sources of infections.A 49-year-old Taiwan Residents diabetic woman with end-stage renal disease had underwent regular *** was referred to our hospital due to a one-day course of fever, dyspnea, hypotension, and fulminant hemorrhagic blisters covering her whole body.A physical examination uncovered multiple hemorrhagic blisters, along with a ruptured blister over the lower left *** tests revealed an elevation of liver enzymes, impaired renal function, lactatemia, and high anion-gap metabolic *** of both blood and hemorrhagic blister fluid grew Aeromonas ***, she experienced persistent shock despite aggressive intravenous fluid, empiric antibiotics, and inotropic agents with norepinephrine and *** diagnosis and prompt management using intravenous fluids, antibiotics and surgical debridement is recommended in order to improve a patient's survival rate.

关键词： Aeromonas hydrophila Bacteremia End-stage renal disease Hemorrhagic blister

Graphical method based on modified maximum force criterion to indicate forming limit curves of 22MnB5 boron steel sheets at elevated temperatures

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Journal of Iron and Steel Research International 2021年第8期28卷 1009-1018页

作者： Thanh Luyen Quoc-Tuan Pham Thi-Bich Mac tien-Long Banh Duc-Toan Nguyen Faculty of Mechanical Engineering Hungyen University of Technology and EducationHungyen 160000Vietnam Division of Computational Mathematics and Engineering Institute for Computational ScienceTon Duc Thang UniversityHo Chi Minh City 70000Vietnam Faculty of Civil Engineering Ton Duc Thang UniversityHo Chi Minh City 70000Vietnam School of Mechanical Engineering Hanoi University of Science and TechnologyHanoi City 100000Vietnam

A new approach for predicting forming limit curves(FLCs)at elevated temperatures was proposed *** are often used to predict failure and determine the optimal forming parameters of automotive ***,a graphical method based on a modified maximum force criterion was applied to estimate the FLCs of 22MnB5 boron steel sheets at room temperature using various hardening ***,the predicted FLC data at room temperature were compared with corresponding data obtained from Nakazima's tests to obtain the best *** estimate the FLC at elevated temperatures,tensile tests were conducted at various temperatures to determine the ratios of equivalent fracture strains between the corresponding elevated temperatures and room *** at elevated temperatures could be established based on obtained ***,the predicted FLCs at elevated temperatures did not agree well with the corresponding FLC experimental data of Zhou et al.A new method was proposed herein to improve the prediction of FLCs at elevated *** FLC calculated at room tem-perature was utilized to predict the failure of Nakazima's samples via finite element *** on the simulation results at room temperature,the mathematical relationships between the equivalent ductile fracture strain versus stress triaxiality and strain ratio were established and then combined with ratios between elevated and room temperatures to calculate the FLCs at different *** predicted FLCs at elevated temperatures agree well with the corresponding experimental FLC data.

关键词： Forming limit curve Modified maximum force criterion Graphical method Hardening law Finite element method Boron steel sheet Elevated temperature

Optimum Design for the Magnification Mechanisms Employing Fuzzy Logic-ANFIS

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Computers, Materials & Continua 2022年第12期73卷 5961-5983页

作者： Ngoc Thai Huynh tien V.T.Nguyen Quoc Manh Nguyen Faculty of Automobile Technology Industrial University of Ho Chi Minh CityHo Chi Minh City70000Vietnam Faculty of Mechanical Technology Industrial University of Ho Chi Minh CityHo Chi Minh City70000Vietnam Faculty of Mechanical Engineering Hung Yen University of Technology and EducationHung Yen160000Vietnam

To achieve high work performance for compliant mechanisms of motion scope,continuous work condition,and high frequency,we propose a new hybrid algorithm that could be applied to multi-objective optimum *** this investigation,we use the tools of finite element analysis(FEA)for a magnificationmechanism to find out the effects of design variables on the magnification ratio of the mechanism and then select an optimal mechanism that could meet design requirements.A poly-algorithm including the Grey-Taguchi method,fuzzy logic system,and adaptive neuro-fuzzy inference system(ANFIS)algorithm,was utilized mainly in this *** FEA outcomes indicated that design variables have significantly affected on magnification ratio of the mechanism and verified by analysis of variance and analysis of the signal to noise of grey relational *** results are also predicted by employing the tool of ANFIS in *** conclusion,the optimal findings obtained:Its magnification is larger than 40 times in comparison with the initial design,the maximum principal stress is 127.89MPa,and the first modal shape frequency obtained 397.45 ***,we found that the outcomes obtained deviation error compared with predicted results of displacement,stress,and frequency are 8.76%,3.6%,and 6.92%,respectively.

关键词： Compliant mechanism grey relational analysis taguchi method multi-objective optimization fuzzy logic system adaptive neuro-fuzzy inference system(ANFIS)

A Novel Constant Power Control of High Frequency Electronic Ballast Applying the PLL Technique for a Metal Halide Lamp

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A Novel Constant Power Control of High Frequency Electronic ...

C2-Symmetric Dibenzosuberane-based Helicenes as Potential Chirochromic Optical Switches and Amorphous Hosts in OLED Applications

CES/IEEE 5th International Power Electronics and Motion Control Conference

作者： Chung-Lun Ou tien-Shuo Liu Ken-chuan Hsu St.John’s University/Department of Computer ＆ Communication Engineering TaiwanChina St.John’s University/Department of Computer ＆ Communication Engineering TaiwanChina St.John’s University/Department of Computer ＆ Communication Engineering TaiwanChina

＜正＞This paper presents a new constant power control of high frequency electronic ballast for a metal halide lamp based on the phase-locked loop （PLL） technique. First, the PLL is employed as a feedback mechanism to improve the resonant frequency variations caused by lamps aging or an impedance difference between used lamps characteristics. The proposed system can adjust the operating frequency to sustain constant power for a metal halide lamp according to the impedance of the adopted lamps. Moreover, the control-strategy also can be used to substantially reduce the warm-up process of a metal halide lamp. The design considerations and measured results are detailed to verify the validity of the proposed control strategy.

关键词： electronic ballast metal halide lamp PLL constant power design

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Chemical Research in Chinese Universities 2001年第Z1期17卷 148-149页

作者： CHEN Chien-tien Department of Chemistry National Taiwan Normal University

Three C2-symmetric (10R,11R)-diethyl substituted dibenzosuberane (DBS)-based helicenes with varying steric and conjugation demands of their bottom fragments were synthesized. Only the helicene-7a[with the bottom part derived from tetralone was found photo-switchable in reasonable time scale. Photoisomerization of the diastereomerically pure (10R,11R,P)-helicene (7a) at 280 nm led to virtually exclusive formation of the opposite M form-diastereomer 7a′ (7a′/7a = 99.6/0.4). The preferential return of 7a′ to 7a can be effected upon irradiation at 254 nm (7a′/7a = 3G/67) or thermally at 130 7a′/7a = 0/100). The photo-induced switching process amounts to a 133% difference in d.e. (from 99.2% to-34%). The concomitant change of helicene chirality between these two diastereomeric photostationary states augurs well for their potential application as an optical switch in LC materials. To our knowledge, our system serves as the best chirochromic optical switch as compared to the examples possessing similar photochromic properties.

关键词： optical switch potential application time scale