检索结果-内蒙古大学图书馆

arXiv 2025年

作者： Lai, Haoran Jiang, Zihang Yao, Qingsong Wang, Rongsheng He, Zhiyang Tao, Xiaodong Wei, Wei Lv, Weifu Zhou, S. Kevin School of Biomedical Engineering Division of Life Sciences and Medicine University of Science and Technology of China Anhui Hefei230026 China Suzhou Institute for Advanced Research University of Science and Technology of China Jiangsu Suzhou215123 China Stanford University Palo AltoCA94305 United States Medical Business Department iFlytek Co.Ltd. Anhui Hefei230088 China The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Anhui Hefei230001 China Department of Radiology The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Anhui Hefei230001 China Suzhou Institute for Advance Research USTC Jiangsu Suzhou215123 China State Key Laboratory of Precision and Intelligent Chemistry University of Science and Technology of China Anhui Hefei230026 China Institute of Computing Technology CAS Beijing100190 China

3D medical images such as Computed tomography (CT) are widely used in clinical practice, offering a great potential for automatic diagnosis. Supervised learning-based approaches have achieved significant progress but rely heavily on extensive manual annotations, limited by the availability of training data and the diversity of abnormality types. Vision-language alignment (VLA) offers a promising alternative by enabling zero-shot learning without additional annotations. However, we empirically discover that the visual and textural embeddings after alignment endeavors from existing VLA methods form two well-separated clusters, presenting a wide gap to be bridged. To bridge this gap, we propose a Bridged Semantic Alignment (BrgSA) framework. First, we utilize a large language model to perform semantic summarization of reports, extracting high-level semantic information. Second, we design a Cross-Modal Knowledge Interaction (CMKI) module that leverages a cross-modal knowledge bank as a semantic bridge, facilitating interaction between the two modalities, narrowing the gap, and improving their alignment. To comprehensively evaluate our method, we construct a benchmark dataset that includes 15 underrepresented abnormalities as well as utilize two existing benchmark datasets. Experimental results demonstrate that BrgSA achieves state-of-the-art performances on both public benchmark datasets and our custom-labeled dataset, with significant improvements in zero-shot diagnosis of underrepresented abnormalities. © 2025, CC BY.

关键词： Zero-shot learning

来源：评论

学校读者我要写书评

暂无评论

Mechanical Properties of Glycated Cracked Articular Cartilage Under Uniaxial and Cyclic Tensile Loading

SSRN

引用

SSRN 2025年

作者： Gao, Li-Lan Fang, Yi Lin, Xiang-Long Kong, De-Zhao Tan, Yan-Song Li, Rui-Xin Sun, Kai Zhang, Chun-Qiu Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology Tianjin300382 China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of Technology Tianjin300382 China Co. Ltd. Tianjin300190 China Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction Tianjin Stomatological Hospital The Affiliated Stomatological Hospital of Nankai University Tianjin300041 China Orthopaedic of Tianjin First Central Hospital Tianjin300190 China

In clinical diagnosis, diabetes, and arthritis were often considered independent, which leads to diabetics getting worse by ignoring early arthritis symptoms. Therefore, the fatigue damage mechanism of articular cartilage in a hyperglycemic environment must be clarified. Under simulating physiological loads, this study delved into glycated cracked cartilage's fracture toughness and damage mechanism. Moreover, by introducing the glucose concentration as a crucial variable, a constitutive model of the ratcheting behavior of glycated cracked cartilage was established, which is utilized to predict the impacts of glycation on cartilage. The findings of this study revealed that the glycation environment causes cartilage hardening, which, in turn, leads to a substantial 38.1% reduction in the initial strain required for crack extension, despite an enhancement in tensile strength. The study of dynamic mechanical behavior further supported this observation. Scanning electron microscopy (SEM) showed that this mechanistic change occurs after collagen fibers harden and adhere to one another in the glycation environment. Overall, these results hold significant implications for understanding osteoarthritis (OA) in diabetic patients and for developing and protecting strategies related to this condition. © 2025, The Authors. All rights reserved.

关键词： Fracture toughness

来源：评论

学校读者我要写书评

暂无评论

The Role of Permanent and Induced Electrostatic Dipole Moments for Schottky Barriersin Janus MXY/Graphene Heterostructures: A First Principles Study

arXiv

引用

arXiv 2022年

作者： Chen, Yu-Qi Zhang, Huan-Huan Wen, Bo Li, Xi-Bo Chai, Yi-Feng Xu, Ying Wei, Xiao-Lin Yin, Wen-Jin Teobaldi, Gilberto School of Physics and Electronic Science Hunan University of Science and Technology Xiangtan411201 China Key Laboratory of Intelligent Sensors and Advanced Sensing Materials of Hunan Province Hunan University of Science and Technology Xiangtan411201 China School of Physics and Electronics Henan University Kaifeng475001 China Department of Physics Jinan University Guangzhou510632 China Department of Physics Laboratory for Quantum Engineering and Micro-Nano Energy Technology Xiangtan University Hunan Xiangtan411105 China Scientific Computing Department STFC UKRI Rutherford Appleton Laboratory Harwell Campus DidcotOX11 0QX United Kingdom School of Chemistry University of Southampton High Field Southampton SO17 1BJ United Kingdom

The Schottky barrier height (ESBH) is a crucialfactorin determining the transport properties of semiconductor materials as it directly regulatesthe carrier mobility in opto-electronics *** principle, van der Waals (vdW)Janusheterostructures offer an appealing avenue to controlling the ***, the underlying atomistic mechanismsare far from understood conclusively, which prompts for further research in the topic. To this end,here, we carryout an extensive first principles study of the electronic properties and ESHBof several vdW Janus MXY/Graphene(M=Mo, W;X, Y=S, Se, Te) *** results of the simulations show that by changing the composition and geometry of the heterostructure's interface, it is possible to controlitselectrical contact, thence electron transport properties, from Ohmicto Schottky with nearly one order of magnitude variationsin the *** analysis of the simulations enables rationalization of this highly attractive propertyon the basis of theinterplaybetween the permanent dipole moment of the Janus MXYsheet and the induced one due to interfacial charge redistribution at the MXY/Grinterface. Such an interplayis shown to be highly effectivein alteringthe electrostatic potential difference acrossthe vdW Janus heterostructure, determining its ESBH, thence Schottky (Ohmic) contact type. These computational findings contribute guidelines to control electrical contactsinJanus heterostructurestowardsrationaldesign of electrical contacts in nanoscale devices. © 2022, CC BY.

关键词： Van der Waals forces

来源：评论

学校读者我要写书评

暂无评论

An IGS algorithm applied to DNA sequence design 17

An IGS algorithm applied to DNA sequence design

引用

17th IEEE International Conference on Dependable, Autonomic and Secure computing, IEEE 17th International Conference on Pervasive Intelligence and computing, IEEE 5th International Conference on Cloud and Big Data computing, 4th Cyber Science and Technology Congress, DASC-PiCom-CBDCom-CyberSciTech 2019

作者： Liu, Kaiqiang Wang, Bin Liu, Yuan Wu, Ranfeng Zhang, Xun Liu, Xin Zhang, Qiang Yin, Zhixiang Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian China School of Computer Science and Technology Dalian University of Technology Dalian China School of Mathematics and Big Data Anhui University of Science and Technology Dalian China

ISBN: (纸本)9781728130255;9781728130248

American scientist Adelman first used DNA molecules to solve the NP-complete problem, thus creating a new research field. As an advanced interdisciplinary subject, it has attracted many scholars because of its high parallelism, great storage density and low energy consumption. DNA sequence design is critical in the field of DNA computing. The success of DNA computing depends on the quality of DNA sequence. In this paper, we proposed an improved gravitational search algorithm for DNA sequence design. We improved the gravitational coefficient and introduced chaotic system and Gaussian mutation to the position update of the particles. We compared the result from our improved algorithm with the result obtained by other algorithms. The result shows that our proposed algorithm can generate high quality DNA sequence for DNA computing. © 2019 IEEE.

关键词： DNA computing DNA sequence design Gravitational search algorithm NP-complete problem

来源：评论

学校读者我要写书评

暂无评论

Deep High-order Asymmetric Supervised Hashing for Image Retrieval

Deep High-order Asymmetric Supervised Hashing for Image Retr...

引用

International Joint Conference on Neural Networks (IJCNN)

作者： Yongchao Yang Jianxin Zhang Qian Wang Bin Liu Key Lab of Advanced Design and Intelligent Computing (Ministry of Education) Dalian University Dalian China School of Computer Science and Engineering Dalian Minzu University Dalian China International School of Information Science and Engineering (DUT-RUISE) Dalian University of Technology Dalian China

ISBN: (数字)9781728169262

ISBN: (纸本)9781728169279

Deep hashing has recently been attracting more and more attentions for large-scale image retrieval task owing to its superior performance of search efficiency and less storage space requirements. Among deep hashing models, asymmetric deep hashing performs feature learning on query dataset and directly generates hash code on database images, significantly improving the retrieval performance of deep hashing models. Meanwhile, recently works also establish that high-order statistic of deep features are helpful to obtain more discriminant representations of images. Therefore, to boost the retrieval capability of deep hashing, this work tries to integrate merits of the high-order statistic module and the asymmetric deep hashing architecture, and it further proposes a novel deep high-order asymmetric supervised hashing (DHoASH) for image retrieval. More specifically, we utilize a powerful global covariance pooling module based on matrix power normalization to compute the second-order statistic features of input images, which is fluently embedded into an asymmetric hashing architecture in an end-to-end manner, leading to the generation of more discriminant binary hashing code. Experiment results on two benchmarks illuminates the effectiveness of the proposed DHoASH, which also achieves very competitive retrieval accuracy compared to the state-of-the-art methods.

关键词： Covariance matrices Feature extraction Matrix decomposition Image retrieval Task analysis Convolutional codes

来源：评论

学校读者我要写书评

暂无评论

Constraining ultralight vector dark matter with the Parkes Pulsar Timing Array second data release

引用

Physical Review D 2022年第8期106卷 L081101-L081101页

作者： Yu-Mei Wu Zu-Cheng Chen Qing-Guo Huang Xingjiang Zhu N. D. Ramesh Bhat Yi Feng George Hobbs Richard N. Manchester Christopher J. Russell R. M. Shannon School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced Study UCAS Hangzhou 310024 China School of Physical Sciences University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 China CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China Department of Astronomy Beijing Normal University Beijing 100875 China Advanced Institute of Natural Sciences Beijing Normal University Zhuhai 519087 China International Centre for Radio Astronomy Research Curtin University Bentley Western Australia 6102 Australia Research Center for Intelligent Computing Platforms Zhejiang Laboratory Hangzhou 311100 China Australia Telescope National Facility CSIRO Astronomy and Space Science P.O. Box 76 Epping New South Wales 1710 Australia CSIRO Scientific Computing Australian Technology Park Locked Bag 9013 Alexandria New South Wales 1435 Australia Centre for Astrophysics and Supercomputing Swinburne University of Technology Hawthorn Victoria 3122 Australia Australian Research Council Centre of Excellence in Gravitational Wave Discovery (OzGrav)

Composed of ultralight bosons, fuzzy dark matter provides an intriguing solution to challenges that the standard cold dark matter model encounters on subgalactic scales. The ultralight dark matter with mass m∼10−23 eV will induce a periodic oscillation in gravitational potentials with a frequency in the nanohertz band, leading to observable effects in the arrival times of radio pulses from pulsars. Unlike scalar dark matter, pulsar timing signals induced by the vector dark matter are dependent on the oscillation direction of the vector fields. In this work, we search for ultralight vector dark matter in the mass range of [2×10−24,2×10−22] eV through its gravitational effect in the Parkes Pulsar Timing Array (PPTA) second data release. Since no statistically significant detection is made, we place 95% upper limits on the local dark matter density as ρVF≲5 GeV/cm3 for m≲10−23 eV. As no preferred direction is found for the vector dark matter, these constraints are comparable to those given by the scalar dark matter search with an earlier 12-year dataset of PPTA.

关键词： Dark matter Gravitational waves

来源：评论

学校读者我要写书评

暂无评论

Speech Emotion Recognition Based on Image Enhancement

Speech Emotion Recognition Based on Image Enhancement

引用

International Conference on intelligent System and Knowledge Engineering, ISKE

作者： Dongyan Wang Jing Dong Dongsheng Zhou Xiaopeng Wei Qiang Zhang Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China School of Computer Science and Technology Dalian University of Technology Dalian China

ISBN: (数字)9781728123486

ISBN: (纸本)9781728123493

The performance of an emotion recognition system is determined by the quality of emotional features. In this paper, we propose a feature optimization algorithm based on image enhancement and present a convolutional recurrent model to realize emotional recognition of natural speech. For three-dimensional (3-D) log-Mel spectrum and 3-D spectrogram features, the fast gamma transformation with an adaptive threshold is adopted for feature enhancement to make full use of the dynamic characteristics of non-stationary speech signals. Meanwhile, the model combining Convolutional Neural Network (CNN) with the rectangular kernels and Long Short-Term Memory (LSTM) is used to complete speech emotion recognition tasks. Experiments are carried out on two public emotional datasets, and results demonstrate the good generalization ability and recognition performance of our proposed model.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Current progress in corrosion of multi principal element alloys

arXiv

引用

arXiv 2024年

作者： Ghorbani, M. Li, Z. Qiu, Y. Marcus, P. Scully, J.R. Gharbi, O. Luo, H. Gupta, R.K. Zeng, Z.R. Fraser, H.L. Taheri, M.L. Birbilis, N. Faculty of Science Engineering and the Built Environment Deakin University VIC Australia College of Engineering Computing and Cybernetics Australian National University ACT Australia Faculty of Materials Wuhan University of Science and Technology Wuhan China PSL University CNRS Chimie ParisTech Institut de Recherche de Chimie Paris Physical Chemistry of Surfaces Group Paris France Department of Materials Science and Engineering University of Virginia VA United States CNRS Sorbonne Université Laboratoire de Réactivité de Surface LRS Paris France National Materials Corrosion and Protection Data Center Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing China Department of Materials Science and Engineering North Carolina State University RaleighNC United States State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle Hunan University Changsha China Department of Materials Science and Engineering The Ohio State University ColumbusOH United States Department of Materials Science and Engineering Johns Hopkins University BaltimoreMD United States

Whilst multi-principal element alloys (MPEAs) remain a promising class of materials owing to several attractive mechanical properties, their corrosion performance is also unique. In this concise review, we present an emerging overview of some of the general features related to MPEA corrosion, following a decade of work in the field. This includes highlighting some of the key aspects related to the electrochemical phenomena in MPEA corrosion, and the relevant future works required for a holistic mechanistic understanding. In addition, a comprehensive database of the reported corrosion performance of MPEAs is presented – based on works reported to date. The database is assembled to also allow users to undertake machine learning or their own data analysis, with a parsed representation of alloy composition, test electrolyte, and corrosion related parameters. © 2024, CC BY-NC-ND.

关键词： Database systems

来源：评论

学校读者我要写书评

暂无评论

Mechanical Analysis and Performance Optimization for the Lunar Rover’s Vane-Telescopic Walking Wheel

引用

Engineering 2020年第8期6卷 936-943页

作者： Lu Yang Bowen Cai Ronghui Zhang Kening Li Zixian Zhang Jiehao Lei Baichao Chen Rongben Wang Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical EngineeringTianjin University of TechnologyTianjin 300384China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of TechnologyTianjin 300384China Guangdong Key Laboratory of Intelligent Transportation System School of Intelligent Systems EngineeringSun Yat-sen UniversityGuangzhou 510275China College of Transportation Jilin UniversityChangchun 130025China Department of Mechanical Science and Engineering Tokyo Institute of TechnologyTokyo 152-8550Japan Armour College of Engineering Illinois Institute of TechnologyChicagoIL 60616USA China Academy of Space Technology Beijing 100029China

It is well-known that optimizing the wheel system of lunar rovers is ***,this is a difficult task due to the complex terrain of the moon and limited resources onboard lunar *** this study,an experimental prototype was set up to analyze the existing mechanical design of a lunar rover and improve its ***,a new vane-telescopic walking wheel was proposed for the lunar rover with a positive and negative quadrangle suspension,considering the complex terrain of the ***,the performance was optimized under the limitations of preserving the slope passage and minimizing power *** was achieved via analysis of the wheel force during ***,the effectiveness of the proposed method was demonstrated by several simulation *** newly designed wheel can protrude on demand and reduce energy consumption;it can be used as a reference for lunar rover development engineering in China.

关键词： intelligent vehicle Vane-telescopic walking wheel Performance optimization Vane spring Lunar rover

来源：评论

学校读者我要写书评

暂无评论

LED Visible Light Localization Based on Illuminance Analysis

LED Visible Light Localization Based on Illuminance Analysis

引用

IEEE International Conference on Real-time computing and Robotics (RCAR)

作者： Chenting Gu Xiaofeng Liu Yongsheng Ou Chao Liu Hao Tao Tianyun Shi HoHai University Nanjing China Chinese Academy of Sciences Shenzhen Institutes of Advanced Technology Shenzhen China Key Laboratory of Special Robots Changzhou China Changzhou Key Laboratory of Robots and Intelligent Technology Changzhou China College of IoT Engineering Hohai University Changzhou China Key Laboratory of Human-Machine-Intelligence Synergic Systems Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen China Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen China China Ship Development and Design Center Wuhan Tian-yun Shi China Academy of Railway Sciences Corporation Limited Beijing China

ISBN: (数字)9781728172934

ISBN: (纸本)9781728172941

LED based positioning technology has recently become a popular choice due to the low cost, convenience for maintenance and strong adaptability to the environment. In this paper, we introduce an illuminance-distance analysis method with a rolling shutter camera, for a low-cost indoor positioning system to improve robustness in the case of insufficient LEDs. Firstly, the binary threshold method is used to decode the light signals. Then the gray value information of image is extracted to analyze the depth of LEDs, using the illuminance attenuation theorem. It provides potential solution to the position of devices with the camera by combining depth information, image and camera intrinsic. Our proposed method reduced the minimum number of LEDs observed by the camera from three to two, using only the camera. We evaluated the proposed method with real scene data and demonstrated the effectiveness of illumination-distance model based localization.

关键词： Light emitting diodes Cameras Receivers Light sources Robots Mathematical model Image sensors

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：