http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Environmental Effects and Output-Only Model Identification of Continuous Bridge Response
Chuang Chen,Mosbeh R. Kaloop,Qingfei Gao,Zonglin Wang 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.7
Studying the response of bridge due to temperature effects is the main aim of this paper. The Fu-Sui bridge is constructed on a hard environmental effect region in China. To evaluate and assessment the behavior of this bridge, a finite element model and Structural Health Monitoring System (SHM) are used. In addition, the output only model identification is used to assess the thermal response and displacement of bridge. The results of the finite element and monitoring system reveal to that the behavior of the bridge after the first working year is safe, but over a long time period the low temperatures will have an effect on the behavior of the bridge, especially for the upper girder monitoring points. The thermal response and displacement output of the model used conforms with the SHM measurements. Also, the models calculated can be used to detect the bridge behavior in future time monitoring.
THE MINIMAX PROBLEM OF TWO VECTOR-VALUED FUNCTIONS
Chuang Liang Zhang 경남대학교 수학교육과 2018 Nonlinear Functional Analysis and Applications Vol.23 No.1
In this paper, we study the minimax problem in a partial ordered Hausdorff topological vector space. We obtain a vector form Ky Fan minimax inequality theorem which involves two vector-valued functions. The proof of this theorem don’t use separation theorems and nonlinear scalarization functions. Forthermore, we also use the fixed point theorem of set-valued mappings by Browder [1] to prove some results of minimax problem of two vector-valued functions, and the minimax theorem in [16] is extended to vector form.
Chuang Wei-Tsung,Jeng U-Ser,Sheu Hwo-Shuenn,Hong Po-Da The Polymer Society of Korea 2006 Macromolecular Research Vol.14 No.1
We conducted simultaneous, small-angle, X-ray scattering/differential scanning calorimetry (SAXS/DSC) and simultaneous, wide-angle, X-ray scattering (WAXS)/DSC measurements for a polymer blend of poly($\varepsilon$-caprolactone)/poly(ethylene glycol)(PCL/PEG). The time-dependent SAXS/DSC and WAXS/DSC results, measured while the system was quenched below the melting temperature of PCL from a melting state, revealed the competitive behavior between liquid-liquid phase separation and crystallization in the polymer blend. The time-dependent structural evolution extracted from the SAXS/WAXS/DSC results can be characterized by the following four stages in the PCL crystallization process: the induction (I), nucleation (II), growth (III), and late (IV) stages. The influence of the liquid-liquid phase separation on the crystallization of PCL was also observed by phase-contrast microscope and polarized microscope with 1/4$\lambda$ compensator.
Chuang, Zhenju,Liu, Shewen,Lu, Yu The Society of Naval Architects of Korea 2020 International Journal of Naval Architecture and Oc Vol.12 No.1
This paper presents an integrated analysis about dynamic performance of a Floating Offshore Wind Turbine (FOWT) OC4 DeepCwind with semi-submersible platform under real sea environment. The emphasis of this paper is to investigate how the wave mean drift force and slow-drift wave excitation load (Quadratic transfer function, namely QTF) influence the platform motions, mooring line tension and tower base bending moments. Second order potential theory is being used for computing linear and nonlinear wave effects, including first order wave force, mean drift force and slow-drift excitation loads. Morison model is utilized to account the viscous effect from fluid. This approach considers floating wind turbine as an integrated coupled system. Two time-domain solvers, SIMA (SIMO/RIFLEX/AERODYN) and FAST are being chosen to analyze the global response of the integrated coupled system under small, moderate and severe sea condition. Results show that second order mean drift force and slow-drift force will drift the floater away along wave propagation direction. At the same time, slow-drift force has larger effect than mean drift force. Also tension of the mooring line at fairlead and tower base loads are increased accordingly in all sea conditions under investigation.
E-Health Family Interventions for Parents of Children With Autism Aged 0–6 Years: A Scoping Review
Chuang Shang,Wei Xie,Jinpeng Zeng,Nour Osman,Caihong Sun,Mingyang Zou,Jianli Wang,Lijie Wu 대한신경정신의학회 2024 PSYCHIATRY INVESTIGATION Vol.21 No.9
Objective Autism spectrum disorder (ASD) is a neurodevelopmental disorder with onset in infancy. Early intervention is critical to improve the prognosis for these children. E-health interventions have tremendous potential. This review aimed to determine the status and effectiveness of family interventions for parents of children aged 0–6 years with ASD in the context of e-health. Methods The review methodology was guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. PubMed, Web of Science, and China National Knowledge Infrastructure were searched from inception to June 2022. The searches were limited to children with ASD of the age range between 0 and 6 years. We collated the available information and used descriptive statistics to analyze the synthesized data. Results Our initial search identified 3,672 articles, of which 30 studies met the inclusion criteria. The 30 articles selected were released between 2012 and 2022. All articles are in English. Most articles reviewed were from high-income countries (27/30, 90.0%), especially from the United States (16/30, 53.3%). Four major themes emerged from the 30 studies that matched the inclusion criteria, as follows: 1) type of e-health interventions, 2) duration of interventions, 3) clinical aspects of e-health interventions, and 4) evidence for intervention effectiveness, looking into the positive, negative, and mixed findings of previous studies. Conclusion These findings suggest that a wide variety of e-health interventions may actually help support both children with ASD aged 0–6 years and their parents. Psychiatry Investig 2024;21(9):925-937
Chuang Zhang,Chen Guo,Mu‑Zhuang Guo 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.3
The approaches of artifcial intelligence (AI)-based has widely been utilized to provide higher positioning precision for ship navigation by integrating the GPS with the SINS. To address the restrictions of complicated and dynamic information resulted from ship irregular motion, this paper proposes a novel ensemble learning technique to replace traditional single neural network. The ensemble learning approach is able to construct the SINS/GPS integrated navigation system model according to the SINS attitude, speed information and accelerometer, gyroscope output data. The proposed method is verifed using ship-mounted experimental data of various trajectories. Experimental results indicate that the proposed algorithm can signifcant improvement in positioning precision under the conditions of SINS and specifc GPS unavailability.
Chuang Kong,Meng Wang,Tao Jin,Shaoliang Liu 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.11
The shape of the blade stacking line greatly influences the low-pressure axialflow fan’s operational efficiency, but there is still no fast and effective way to determine the stacking line’s optimal shape. This paper presents an automatic optimization design procedure for the blade stacking line in the low-pressure axial-flow fan based on the FINE/Design3D™ platform. The procedure combines computational fluid dynamics (CFD), surrogate model method, and genetic algorithm (GA) to execute a secondary optimization on a composite skewed-swept rotor-only axial fan blade. The results show that the static efficiency and the static pressure rise of the optimized fan respectively increase by 3.76 % and 5.82 % without stall margin decrease. The blade shape variation in skew and sweep direction reduces the tip leakage flow loss, improves the blade loading distribution, and contributes to the efficiency increment. This research provides a useful reference for the blade stacking line’s automatic optimization for the axial-flow fan.
Chuang Kong,Meng Wang,Tao Jin,Shaoliang Liu 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.1
As a core component of a fan, the blade has a decisive impact on the aerodynamic performance of a low-pressure axial flow fan. Due to the limitations of the classical fan design theory on considering the complex 3D internal flow, the spanwise distribution of blade stacking line and section profiles are usually hard to reach the best state. This paper builds a surrogate-assistant multi-objective optimization flow combined with CFD method to explore the optimum blade shape under two typical working conditions. A total of 16 parameters were selected for demonstrating the blade stacking line and section profiles, according to Morris one-ata-time sensitivity analysis. The objective and constraint functions were the fan’s total-to-static efficiency and static pressure rise, respectively. During the optimization, the surrogate models of all response functions were built using kriging models, on which the multi-objective genetic algorithm takes the exploration. The optimization results indicate that the maximum improvement of the efficiency is 1.26 % for low mass flow working condition and 5.47 % for high mass flow working condition. The optimized models tend to make the low-pressure zone distributed along the blade leading edge in the meridian view and to reduce the tip leakage vortex intensity. This paper provides a good practical demonstration of multi-objective fine optimization on the blade shape of a low-pressure axial flow fan.