检索结果-内蒙古大学图书馆

3rd International Conference on Big Data, Information and Computer Network, BDICN 2024

作者： Wang, Xin Huang, Xiao Yue, Zhongmu Ma, Jie School of China-EU Institute for Clean and Renewable Energy Huazhong University of Science and Technology National Key Laboratory of Science and Technology on Multi-spectral Information Processing Wuhan Hubei China China Ship Development and Design Center Wuhan Hubei China

ISBN: (纸本)9798350363821

Automatic defect detection is more and more widely applied in the industrial field, and the accuracy of detection is significant for product quality control. However, the defect samples that can be collected in the industrial field are limited. Therefore, this paper proposes Cross-Domain Defect GAN, which can generate realistic and diverse defect samples in the absence of real defect data in the target domain. There are totally two generator-detector parts. The first part is to generate similar domain defect images according to the shape and the position of the defect mask generated in the previous stage. In this part, the similar domain defect image dataset is able to be further expanded. The second part is to convert the original similar domain defect images and defect images of similar domains which has generated in the first part are transferred to the target domain defect samples. There are two characteristics of our methods: (1) Generate target defect images without real defect images input;(2) Improve the structure of image-image translation network to meet our purpose. In addition, it also verifies the effectiveness of synthetic defect samples in training defect classification. © 2024 IEEE.

关键词： Data augmentation Defect detection Generative adversarial network

来源：评论

学校读者我要写书评

暂无评论

Fifth-Order A-WENO Schemes Based on the Adaptive Diffusion Central-Upwind Rankine-Hugoniot Fluxes

引用

Communications on Applied Mathematics and Computation 2023年第1期5卷 295-314页

作者： Bao-Shan Wang Wai Sun Don Alexander Kurganov Yongle Liu School of Mathematical Sciences Ocean University of ChinaQingdao 266100ShandongChina Department of Mathematics SUSTech International Center for Mathematics and Guangdong Provincial Key Laboratory of Computational Science and Material DesignSouthern University of Science and TechnologyShenzhen 518055GuangdongChina Department of Mathematics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Department of Mathematics Southern University of Science and TechnologyShenzhen 518055GuangdongChina

We construct new fifth-order alternative WENO(A-WENO)schemes for the Euler equations of gas *** new scheme is based on a new adaptive diffusion centralupwind Rankine-Hugoniot(CURH)numerical *** CURH numerical fluxes have been recently proposed in[Garg et al.J Comput Phys 428,2021]in the context of secondorder semi-discrete finite-volume *** proposed adaptive diffusion CURH flux contains a smaller amount of numerical dissipation compared with the adaptive diffusion central numerical flux,which was also developed with the help of the discrete RankineHugoniot conditions and used in the fifth-order A-WENO scheme recently introduced in[Wang et *** J Sci Comput 42,2020].As in that work,we here use the fifth-order characteristic-wise WENO-Z interpolations to evaluate the fifth-order point values required by the numerical *** resulting one-and two-dimensional schemes are tested on a number of numerical examples,which clearly demonstrate that the new schemes outperform the existing fifth-order A-WENO schemes without compromising the robustness.

关键词： A-WENO schemes Central-upwind schemes Discrete Rankine-Hugoniot conditions Numerical dissipation switch Local speeds of propagation Euler equations of gas dynamics

来源：评论

学校读者我要写书评

暂无评论

Molecular transport under extreme confinement

引用

science China(Physics,Mechanics & Astronomy) 2022年第6期65卷 1-10页

作者： FengChao Wang JianHao Qian JingCun Fan JinChuan Li HengYu Xu HengAn Wu CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei 230027China

Mass transport through the nanoporous medium is ubiquitous in nature and *** the macroscale transport phenomena which have been well understood by the theory of continuum mechanics,the relevant physics and mechanics on the nanoscale transport still remain *** developments in fabrication of slit-like nanocapillaries with precise dimensions and atomically smooth surfaces have promoted the fundamental research on the molecular transport under extreme *** this review,we summarized the contemporary progress in the study of confined molecular transport of water,ions and gases,based on both experiments and molecular dynamics *** liquid exhibits a pronounced layered structure that extends over several intermolecular distances from the solid surface,which has a substantial influence on static properties and transport behaviors under *** studies have also shown that those molecular details could provide some new understanding on the century-old classical theory in this field.

关键词： confined mass transport nanocapillary solid-liquid interface confinement effect

来源：评论

学校读者我要写书评

暂无评论

RSPSSL:A novel high-fidelity Raman spectral preprocessing scheme to enhance biomedical applications and chemical resolution visualization

引用

Light(science & Applications) 2024年第2期13卷 366-386页

作者： Jiaqi Hu Gina Jinna Chen Chenlong Xue Pei Liang Yanqun Xiang Chuanlun Zhang Xiaokeng Chi Guoying Liu Yanfang Ye Dongyu Cui De Zhang Xiaojun yu Hong Dang Wen Zhang Junfan Chen Quan Tang Penglai Guo Ho-Pui Ho Yuchao Li Longqing Cong Perry Ping Shum State Key Laboratory of Optical Fiber and Cable Manufacture Technology Guangdong Key Laboratory of Integrated Optoelectronics IntellisenseDepartment of EEESouthern University of Science and TechnologyShenzhen 518055China College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Department of Nasopharyngeal Carcinoma Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangzhou 510060China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Nephrology Chaozhou People’s HospitalChaozhou 521011China Clinical Research Design Division Sun Yatsen Memorial HospitalGuangzhouGuangdong 510120China School of Automation Northwestern Polytechnical UniversityXi’anShaanxi 710072China Department of Biomedical Engineering The Chinese University of Hong KongHong KongChina Guangdong Provincial Key Laboratory of Nanophotonic Manipulation Institute of NanophotonicsJinan UniversityGuangzhou 511443China

Raman spectroscopy has tremendous potential for material analysis with its molecular fingerprinting capability in many branches of science and *** is also an emerging omics technique for metabolic profiling to shape precision ***,precisely attributing vibration peaks coupled with specific environmental,instrumental,and specimen noise is *** Raman spectral preprocessing to remove statistical bias noise and sample-related errors should provide a powerful tool for valuable information ***,we propose a novel Raman spectral preprocessing scheme based on self-supervised learning(RSPSSL)with high capacity and spectral *** can preprocess arbitrary Raman spectra without further training at a speed of~1900 spectra per second without human *** experimental data preprocessing trial demonstrated its excellent capacity and signal fidelity with an 88%reduction in root mean square error and a 60%reduction in infinite norm(L__(∞))compared to established *** this advantage,it remarkably enhanced various biomedical applications with a 400%accuracy elevation(ΔAUC)in cancer diagnosis,an average 38%(few-shot)and 242%accuracy improvement in paraquat concentration prediction,and unsealed the chemical resolution of biomedical hyperspectral images,especially in the spectral fingerprint *** precisely preprocessed various Raman spectra from different spectroscopy devices,laboratories,and diverse *** scheme will enable biomedical mechanism screening with the label-free volumetric molecular imaging tool on organism and disease metabolomics profiling with a scenario of high throughput,cross-device,various analyte complexity,and diverse applications.

关键词： spectral scheme resolution

来源：评论

学校读者我要写书评

暂无评论

Research on the Lean Burn Characteristics of Gasoline Engine Blending with Hydrogen-Rich Gas 8th

Research on the Lean Burn Characteristics of Gasoline Engine...

引用

8th International Conference on Energy and Environmental science, ICEES 2024

作者： Zhang, Beidong Jiang, Yankun Wang, Ruixin School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan430074 China China Ship Development and Design Center Wuhan430064 China

ISBN: (纸本)9783031639005

Methanol has become an important alternative energy source due to its wide availability and renewable properties. Hydrogen, with its fast flame propagation speed and wide combustion limits, can help improve engine efficiency. For further improvement of the overall thermal efficiency, this paper builds an experimental platform to catalytically dissociate methanol using engine exhaust heat, and then mixes the obtained hydrogen-rich gas with gasoline for combustion. The lean burn characteristics of the gasoline engine blended with dissociated methanol gas (GDM) are studied through a combination of experimental and simulation methods. The result shows that under the stoichiometric condition, the brake thermal efficiency (BTE) gradually improves and the brake specific fuel consumption (BSFC) decreases as the methanol substitution ratio (MSR) increases. When the MSR increases from 0 to 80%, the BTE increases by 9.72% at 40 N∙m. At the lean burn condition, the fuel efficiency of the GDM engine is still higher than the original one at the same air–fuel ratio (AFR). Increased λ values can further improve the BTE of GDM engine. Compared to conventional gasoline engine, GDM engine combust faster and the phase of peak cylinder pressure and the phase of maximum heat release rate are (HRR) both closer to the top dead center. The aforementioned phenomenon becomes more prominent as the λ and MSR value increases. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Exhaust systems (engine)

来源：评论

学校读者我要写书评

暂无评论

Research on fiber optic enhanced dual Fabry Perot cavity temperature sensor based on circular concave silver film

引用

Optoelectronics Letters 2024年

作者： Tan Xin Li Zi Peng Yang Qiao He Zhan Qing Wang Jian Qi Hui School of Mechanical Engineering， Inner Mongolia University of Science and Technology Key Laboratory of Micro-Nano Structure Design and Manufacturing Technology， Inner Mongolia University of Science and Technology

This paper proposes a method that combines etching， masking， and magnetron sputtering techniques to prepare a ring-shaped silver mirror structure on the end face of a standard multimode optical fiber. By utilizing the capillary effect to fill a capillary glass tube with PDMS， a structure consisting of a PDMS cavity and an air cavity is maked， resulting in the achievement of a fiber optic dual Fabry-Perot cavity temperature sensor with a ring-shaped silver mirror structure. When the external temperature changes， both the cavity length and the refractive index of PDMS change， causing variations in the intensity of interference light. The annular silver mirror utilizes its high reflectivity to allow more light to enter the receiving end， resulting in a more pronounced change in photon count. Within the range of 25-800C， sensitivity of 150.74 cps/0C and linearity of 0.998 have been achieved. our optical fiber temperature sensor has demonstrated cost-effectiveness， wide range， and high stability in temperature detection through multiple repeated experiments.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Cooperative Transmission for Space-air-ground Integrated Networks: A Multi-Agent Cooperation Method

引用

IEEE Transactions on Vehicular technology 2025年

作者： Cheng, Lei Li, Xiaoqian Feng, Gang Peng, Youkun Qin, Shuang Quek, Tony Q.S University of Electronic Science and Technology of China National Key Laboratory of Wireless Communications Chengdu611731 China Singapore University of Technology and Design Singapore Singapore University of Technology and Design Information Systems Technology and Design Pillar 487372 Singapore

Unmanned aerial vehicles (UAVs) have been widely applied as aerial relays for satellite-to-terrestrial transmission so that data packets can be delivered either directly from satellites to user equipments (UEs) or relayed via UAVs. To exploit the advantages of such space-aerial cooperative transmission, data transmission, and resource allocation should be jointly optimized under constrained resources in dynamic space-air-ground integrated networks (SAGINs). However, the tight coupling between discrete transmission strategies and continuous resource allocation among users leads to a challenging long-term, large-scale, and non-convex optimization problem. While existing multi-agent reinforcement learning (MARL) techniques have exhibited potential in addressing such problems, their limitations in handling discrete-continuous decisions and ensuring robust multi-agent cooperation often result in significant performance deterioration. In this paper, we propose a new MARL-based Cooperative Transmission Strategy (MCTS) to overcome these limitations. In MCTS, each agent employs a hybrid Actor-Critic (H-AC) algorithm, where the optimal discrete transmission strategy with its associated resource allocation is modeled as parameterized actions and determined by an improved AC structure. To enhance cooperation among agents, a multi-agent cooperation framework is designed based on QMIX, employing a centralized Critic to efficiently guide convergence toward optimal solutions while reducing computational complexity. Simulation results demonstrate the superiority of MCTS over a number of benchmark algorithms and efficiency under various environments, in terms of overall transmitted data and resource utilization. © 1967-2012 IEEE.

关键词： Convex optimization

来源：评论

学校读者我要写书评

暂无评论

Analysis of the effect of handrail and foot position on STS in healthy young adults with knee support

引用

Research on Biomedical Engineering 2023年第4期39卷 853-862页

作者： Yang, Shuo Zhao, Na Zhang, Shouwei Xue, Qiang College of Mechanical Engineering Tianjin University of Science & Technology Tianjin300222 China Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry & Food Machinery and Equipment Tianjin300222 China

Background: Rising from a sitting position, or "sit-to-stand" (STS), is one of the basic activities in daily life. Therefore, studying the kinematics and kinetics of STS could help optimize STS movement strategy. This study analyzes the comprehensive influence of the handrail and foot position under the knee joint support on STS kinematics and kinetics. Methods: A total of 30 young people were recruited to participate in this study. Their average age, height, weight, and BIM were 24.21 years old, 168.52 cm, 60.92 kg, and 21.46 kg/m2, respectively. The experiment was conducted under six experimental conditions. Total movement time, percent of movement time of each phase, trunk tilt angle, and peak joint moment were analyzed and compared. In addition, a correlation analysis was carried out between the range of motion of the joint angle and the peak joint moment. Results: The results showed that the far handrail had the largest trunk tilt angle, and the smallest total moment impulse of the lower limb joints. The closer the foot was to the seat, the smaller the peak hip joint moment, and the larger the peak moment of ankle and knee joints, and a shorter total movement time. Conclusions: The position of the handrail had a significant influence on the trunk tilt angle, percent of movement time of certain phase, and the total moment impulse of the lower limb joints. And the position of the foot had a significant influence on the peak moments of the ankle, hip, and knee joints. © 2023, The Author(s), under exclusive licence to The Brazilian Society of Biomedical Engineering.

关键词： Kinematics

来源：评论

学校读者我要写书评

暂无评论

A concise and visual computational interpretation of emotional expression in hand-drawn lines 3

A concise and visual computational interpretation of emotion...

引用

3rd International Conference on Machine Vision, Automatic Identification, and Detection, MVAID 2024

作者： Li, Jiayi Li, Yize Lin, Yunhui Lyu, Ruimin School of Artificial Intelligence and Computer Science Jiangnan University Wuxi214000 China Jiangsu Key Laboratory of Media Design and Software Technology Wuxi214000 China

ISBN: (纸本)9781510681880

In the realms of visual arts and psychology, it's acknowledged that lines and their properties significantly impact human emotional responses. Historically, various characteristics of lines have been proposed for emotional expression research, yet, the pivotal technique in computer vision, Scale-Invariant Feature Transform (SIFT), has frequently been disregarded. computing SIFT key points and their orientations on lines unveils the morphological traits of lines and deciphers their connection with specific emotional states. This method is not only concise in computation but also offers intuitive visualizations and explanations. Our investigation delves into the crucial role of SIFT features in conveying emotions from a computational vision standpoint. By scrutinizing SIFT features extracted from hand-drawn line images, we examined the trends in the quantity and orientation of feature points, and vividly illustrated how these points influence line morphology. Logistic regression analysis has further exposed the linkage between feature points and emotional dimensions such as pleasure and arousal. The results underscore the significance of SIFT features in emotional expression, facilitating the advancement of affective computing applications, as well as emotion recognition and analysis grounded in line features. © 2024 SPIE.

关键词： Regression analysis

来源：评论

学校读者我要写书评

暂无评论

Study on dynamic responses of offshore platform under ship collision 34th

Study on dynamic responses of offshore platform under ship c...

引用

34th International Ocean and Polar Engineering Conference, ISOPE 2024

作者： Tang, Yamin Kang, Zhe Xu, Bo Zhou, Jia Wang, Zhengyao Shanghai Key Laboratory of Ship Engineering Shanghai China Marine Design & Research Institute of China Shanghai China Jiangsu University of Science and Technology Zhenjiang China

ISBN: (纸本)9781880653784

Collision is one of the main risks for offshore platforms, which may cause serious structural damage and even endanger overall safety. The ship-platform collision is analyzed mainly based on ABAQUS. The influence of different collision parameters on the dynamic structural responses of the platform is discussed and the influence of platform leg stiffness is also compared. The results show that the platform performs both global and local deformation under ship impact. The high stress and strain zone of the platform exhibits locality, which is sensitive to collision velocity and position. The leg stiffness affects the plastic strain and energy absorption. © 2024 by the International Society of Offshore and Polar Engineers (ISOPE).

关键词： Dynamic response

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：