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Progress in Natural Science:Materials International 2023年第5期33卷 607-615页

作者： jianguo He Guanghui Zhang yichen jiang Jianfa Jia Jianliang Cao College of Chemistry and Chemical Engineering Henan Polytechnic University State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization Henan Polytechnic University

The remarkable properties exhibited by two-dimensional(2D) photocatalytic materials,differing from bulk materials,have captivated significant *** this study,a hexagonal-phase ZnIn2S4were synthesized using thiosulfate,thioacetamide,and L-cysteine as sulfur sources(denoted as ZIS-A,ZIS-B and ZIS-C),*** synthesized ZnIn2S4 exhibited varying morphologies and photocatalytic properties,which were characterized through XRD,SEM,TEM,EPR,XPS and so *** results confirmed that ZIS-B with 2D nanosheets structures exhibited superior photocatalytic properties compared with that of the flower-like spheres and block *** hydrogen evolution rate of the ZIS-B is 3653 μmol g-1h-1,which is 3.1 times than that of the other *** improvement was attributable to that the ZIS-B have 2D nanosheets structures and sulfur ***,the 2D nanosheets structure endowed ZnIn2S4with a larger surface area and abundant reactive sites for efficient evolution ***,the presence of sulfur vacancies served as active sites,facilitating carrier transport and ultimately promoting the rate of photocatalytic hydrogen *** results present a novel method for optimizing 2D ZnIn2S4photocatalyst to improve the photocatalytic hydrogen evolution.

关键词： ZnIn2S4 Nanosheets Sulfur vacancies Photocatalytic hydrogen production

Music-stylized hierarchical dance synthesis with user control

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虚拟现实与智能硬件（中英文） 2024年第5期6卷 339-357页

作者： Yanbo CHENG yichen jiang Yingying WANG Department of Computing and Software McMaster UniversityON L8S 4L8Canada

Background Synthesizing dance motions to match musical inputs is a significant challenge in animation *** to functional human motions,such as locomotion,dance motions are creative and artistic,often influenced by music,and can be independent body language *** choreography requires motion content to follow a general dance genre,whereas dance performances under musical influence are infused with diverse impromptu motion *** the high expressiveness and variations in space and time,providing accessible and effective user control for tuning dance motion styles remains an open *** In this study,we present a hierarchical framework that decouples the dance synthesis task into independent *** use a high-level choreography module built as a Transformer-based sequence model to predict the long-term structure of a dance genre and a low-level realization module that implements dance stylization and synchronization to match the musical input or user *** novel framework allows the individual modules to be trained *** of the decoupling,dance composition can fully utilize existing high-quality dance datasets that do not have musical accompaniments,and the dance implementation can conveniently incorporate user controls and edit motions through a decoder *** module is replaceable at runtime,which adds flexibility to the synthesis of dance *** Synthesized results demonstrate that our framework generates high-quality diverse dance motions that are well adapted to varying musical conditions and user controls.

关键词： Deep learning Character animation Motion synthesis Motion stylization Multimodal synchronization User control

Effects of Second-Order Difference-Frequency Wave Forces on Floating Wind Turbine Under Survival Condition

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Transactions of Tianjin University 2017年第2期23卷 130-137页

作者： Jiawen Li yichen jiang Yougang Tang Xiaoqi Qu Jiawei Zhai State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University Department of Mechanical Engineering University of California at Berkeley

In this paper, the effects of second-order difference-frequency wave forces on the global motion of an offshore wind turbine system with a large displacement under the survival condition are studied. In this case, the hydrodynamic force is the main force because the blades are feathered to reduce the lifting force. The first-order hydrodynamic forces are calculated by WADAM, while the second-order wave forces are calculated by a customized MATLAB module. Then the hydrodynamic coefficients are transferred to the wind turbine analytical code FAST. Through the comparisons of dynamic responses between the first- and second-order numerical models, it is found that the second-order wave forces significantly influence the motion of floating wind turbine under the survival condition. Moreover, neglecting the second-order force significantly underestimates the tension forces in the mooring lines. © 2017, Tianjin University and Springer-Verlag Berlin Heidelberg.

关键词： Fluid dynamics Hydrodynamics Mooring cables Sailing vessels Wind turbines

Extraordinary stability of surfactant-free bubbles suspended in ultrasound

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Droplet 2024年第2期3卷 146-152页

作者： Xiaoliang Ji Wenxuan Zhong Kangqi Liu yichen jiang Hongyue Chen Wei Zhao Duyang Zang School of Physical Science and Technology Northwestern Polytechnical UniversityXi'anChina Shaanxi Liquid Physics Research Center Xi'anChina School of Marine Science and Technology Northwestern Polytechnical UniversityXi'anChina State Key Laboratory of Photon-Technology in Western China Energy International Scientific and Technological Cooperation Base of Photoelectric Technology and Functional Materials and ApplicationInstitute of Photonics and Photon-TechnologyNorthwest UniversityXi'anChina

Gravity-induced drainage is one of the main destabilizing mechanisms for soap bubbles and *** we show that solely through acoustic levitation without introducing any chemical stabilizers,liquid drainage in the bubble film can be completely inhibited,therefore leading to a significant enhancement of bubble lifetime by more than two orders of magnitude and enabling the bubble to survive puncturing by a *** on sound simulation and force analysis,it has been found that acoustic radiation force,exerted on both the inner and outer surfaces of the levitated bubble,acts in opposite directions,thus providing a squeezing effect to the bubble *** hydrostatic pressure that induces drainage has been balanced by the acoustic radiation pressure exerted on both sides of the film,which is at the origin of the sound stabilization *** study provides new insights into the interplay between sound and soap bubbles or films,thus stimulating a wide range of fundamental research concerning bubble films and expanding their applications in bio/chemical reactors.

关键词： bubble sound ordinary

“The God of War Is Cleaning His Boots”-Analysis of Yaxian’s Work“God of War”

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Cultural and Religious Studies 2021年第7期9卷 338-341页

作者： jiang yichen Nanping Middle School ChongqingChina

Yaxian was forced to live far from his home and family since he was young because of the *** lived in exile with losing his youth in the ***,the memories of war have deeply rooted in Yaxian’s mind,and these life experiences will also be integrated into his *** this light,war should be an important and profound topic in Yaxian’s poetry,and his war poetry is worth exploring.

关键词： Yaxian god of war the war

融合自适应曲线预瞄的驾驶机器人转向操纵粒子群优化滑模控制

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西安交通大学学报 2021年第3期55卷 175-185页

作者：蒋一辰陈刚南京理工大学机械工程学院南京210094

为提高不同工况下驾驶机器人操纵试验车辆的转向精度和自适应能力,提出了一种基于自适应曲线预瞄的驾驶机器人转向操纵粒子群优化滑模控制方法。首先建立了试验车辆动力学模型和驾驶机器人转向机械手动力学模型,并构建了驾驶机器人转向... 详细信息

为提高不同工况下驾驶机器人操纵试验车辆的转向精度和自适应能力,提出了一种基于自适应曲线预瞄的驾驶机器人转向操纵粒子群优化滑模控制方法。首先建立了试验车辆动力学模型和驾驶机器人转向机械手动力学模型,并构建了驾驶机器人转向操纵试验车辆的集成系统动力学模型,接着研究了一种融合路径曲率和车速的驾驶机器人转向操纵自适应曲线预瞄方法,其预瞄点位置能够根据车速和路径曲率做出自适应调整。在此基础上,设计了用于驾驶机器人转向操纵的粒子群优化滑模控制器,并进行了稳定性分析,同时利用粒子群算法在线优化滑模控制切换项的反馈增益系数,以减小控制抖振。仿真及试验结果表明,所提出的方法能够在不同工况下根据路径曲率和车速做出自适应调整,实现驾驶机器人操纵车辆的精确转向控制。

关键词：驾驶机器人转向控制自适应曲线预瞄滑模控制粒子群优化

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带舭龙骨船体的横摇自由衰减的数值研究

哈尔滨工程大学学报 2019年第1期40卷 81-87页

作者：姜宜辰赵晓杰宗智大连理工大学船舶工程学院辽宁大连116024 高新船舶与深海开发装备协同创新中心上海200240 工业装备结构分析国家重点实验室辽宁大连116024

为了研究带舭龙骨的船体横摇自由衰减运动,本文建立了基于Open FOAM的粘性流场数学模型。模型采用六自由度运动方程与动网格技术计算船舶运动,应用阻尼消波技术消除远处的数值水池壁面产生的反射波,有效提高了数值预报的精度;通过对比... 详细信息

为了研究带舭龙骨的船体横摇自由衰减运动,本文建立了基于Open FOAM的粘性流场数学模型。模型采用六自由度运动方程与动网格技术计算船舶运动,应用阻尼消波技术消除远处的数值水池壁面产生的反射波,有效提高了数值预报的精度;通过对比模拟得到的衰减曲线和阻尼系数与试验所得的结果,分析了舭龙骨附近的涡量场,并探讨了舭龙骨减摇的机理。结果表明本文建立的数值模型可以准确地模拟船体横摇运动,成功预报了不同高度舭龙骨的减摇效果。

关键词：横摇衰减舭龙骨 OpenFOAM 阻尼消波动网格六自由度粘性流场数值模拟

基于PSO算法的船舶横摇阻尼与回复力矩系数估算

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中国造船 2018年第3期59卷 89-97页

作者：曾智华姜宜辰邹早建上海交通大学船舶海洋与建筑工程学院上海200240 大连理工大学船舶工程学院大连116024

横摇阻尼和回复力矩的准确估算是预报船舶横摇运动的关键。论文针对横摇消灭曲线法估算横摇阻尼系数所存在的固有缺陷,提出了一种基于粒子群优化(PSO)算法,从试验得到的自由横摇衰减曲线来获取横摇阻尼和回复力矩系数的方法。该方法通... 详细信息

横摇阻尼和回复力矩的准确估算是预报船舶横摇运动的关键。论文针对横摇消灭曲线法估算横摇阻尼系数所存在的固有缺陷,提出了一种基于粒子群优化(PSO)算法,从试验得到的自由横摇衰减曲线来获取横摇阻尼和回复力矩系数的方法。该方法通过迭代调整横摇阻尼和回复力矩系数,使预报的自由横摇衰减运动时间历程与试验自由横摇衰减曲线之间的误差最小,从而实现对横摇阻尼和回复力矩系数的准确估算。

关键词：自由横摇衰减曲线 PSO算法横摇阻尼系数回复力矩系数

Cardiac MRI Image Enhancement Based on GAN Network

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Cardiac MRI Image Enhancement Based on GAN Network

科幻电影中超现实城市场景的审美进化与影像表达

第43届中国控制会议

作者： yichen jiang Lingguo Cui Bingrun jiang Xin Zhao Senchun Chai Academy of Automation Beijing Institute of Technology

Magnetic Resonance Imaging(MRI) is a common medical imaging technique extensively employed for diagnosing and treating ***,doctors nowadays face significant challenges and increased pressures in their diagnostic *** assurance of MRI image quality encounters impediments arising from noise,blurring,and ***,the demand for high professionals and experience among physicians engaged in MRI imaging diagnosis becomes *** address these challenges,this study centers on the application of deep learning techniques to enhance the quality of MRI *** resultant improvement in image quality not only enhances the reliability of MRI images but also facilitates more facile and valuable diagnoses for medical *** investigation primarily delves into an enhancement method for MRI images grounded in generative adversarial networks(GANs).Acknowledging the frequency domain imaging characteristics of MRI,we introduce a frequency domain enhancement network to mitigate mixed interference during ***,we propose a generator structure that combines frequency and spatial *** primary focus is on tasks encompassing Gaussian denoising,deblurring detail enhancement,and artifact *** efficacy of the proposed model algorithm is substantiated through experimental results,demonstrating its capacity to significantly enhance the imaging quality of MRI images and providing robust support for the automatic analysis and diagnosis of medical images.

关键词： Deep learning MRI image enhancement Frequency domain enhancement

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当代电影 2024年第12期 99-106页

作者：江怡辰贾秀清中国传媒大学戏剧影视学院中国传媒大学动画与数字艺术学院

科幻电影中的超现实城市场景不仅是对现实世界的动态指涉,更是基于人类现实经验的升维想象。随着数字技术的发展,科幻电影中超现实城市场景的设计形态、时空表达以及场景体验都迈出了审美进化的步履。本文纵观科幻电影中城市场景想象与... 详细信息

科幻电影中的超现实城市场景不仅是对现实世界的动态指涉,更是基于人类现实经验的升维想象。随着数字技术的发展,科幻电影中超现实城市场景的设计形态、时空表达以及场景体验都迈出了审美进化的步履。本文纵观科幻电影中城市场景想象与建构的发展脉络,审视其在技术主导下以人类自身作为艺术媒介的审美进化过程,回溯艺术欣赏本原,归纳激活观众情动体验的本质要素,聚焦科幻电影中超现实城市场景的影像表达,提出数据索引式、城市游荡式以及自然景观重构式的科幻电影超现实城市场景设计模型,为科幻电影中的城市场景设计提供新思路,从而扩展其影像表达的新景观,寻找其联结现实生活美学的新通道。

关键词：科幻电影城市场景情动体验审美进化影像表达