检索结果-内蒙古大学图书馆

Temperature-Independent Integrated Optical Sensor Based on a Fabry-Perot Cavity Using the Slot Hybrid-Core Waveguide

Temperature-Independent Integrated Optical Sensor Based on a...

引用

2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Chen, Zhaoyang Qiu, Yanqing Lang, Tingting Guan, Xiaowei School of Optics and Electronic Technology China Jiliang University Hangzhou China School of Information and Electronic Engineering Zhejiang University of Science & Technology Hangzhou China Intelligent Optics & Photonics Research Center Jiaxing Research Institute Zhejiang University Jiaxing China

We propose a novel temperature-independent integrated optical sensor, which consists of Bragg gratings and slot hybrid-core waveguide. The proposed sensor can achieve low temperature dependence within 1pm/K while sust... 详细信息

ISBN: (纸本)9798350312614

关键词： hybrid-core waveguide slot temperature-independent optical sensor

来源：评论

学校读者我要写书评

暂无评论

Targeted regeneration and upcycling of spent graphite by defect‐driven tin nucleation

引用

Carbon Energy 2024年第4期6卷 91-103页

作者： Zhiheng Cheng Zhiling Luo Hao Zhang Wuxing Zhang Wang Gao Yang Zhang Long Qie Yonggang Yao Yunhui Huang Kun Kelvin Fu State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanChina Key Laboratory of Automobile Materials(Jilin University) Ministry of EducationDepartment of Materials Science and EngineeringJilin UniversityChangchunChina Electronic Materials Research Laboratory(Key Lab of Education Ministry) School of Electronic and Information Engineeringand Instrumental Analysis CenterXi'an Jiaotong UniversityXi'anChina Department of Mechanical Engineering University of DelawareNewarkUSA

The recycling of spent batteries has become increasingly important owing to their wide applications,abundant raw material supply,and sustainable *** with the degraded cathode,spent anode graphite often has a relatively intact structure with few defects after long ***,most spent graphite is simply burned or discarded due to its limited value and inferior performance on using conventional recycling methods that are complex,have low efficiency,and fail in performance ***,we propose a fast,efficient,and“intelligent”strategy to regenerate and upcycle spent graphite based on defect‐driven targeted *** Sn as a nanoscale healant,we used rapid heating(~50 ms)to enable dynamic Sn droplets to automatically nucleate around the surface defects on the graphite upon cooling owing to strong binding to the defects(~5.84 eV/atom),thus simultaneously achieving Sn dispersion and graphite *** a result,the regenerated graphite showed enhanced capacity and cycle stability(458.9 mAh g^(−1) at 0.2 A g^(−1) after 100 cycles),superior to those of commercial *** from the self‐adaption of Sn dispersion,spent graphite with different degrees of defects can be regenerated to similar structures and *** analysis indicates that targeted regeneration and upcycling have significantly lower energy consumption(~99%reduction)and near‐zero CO_(2) emission,and yield much higher profit than hydrometallurgy,which opens a new avenue for direct upcycling of spend graphite in an efficient,green,and profitable manner for sustainable battery manufacture.

关键词： battery recycling spent graphite targeted regeneration upcycling graphite

来源：评论

学校读者我要写书评

暂无评论

BC-AKA:Blockchain Based Asymmetric Authentication and Key Agreement Protocol for Distributed 5G Core Network

引用

China Communications 2022年第6期19卷 66-76页

作者： Zhen Gao Dongbin Zhang Jiuzhi Zhang Zhao Liu Haoming Liu Ming Zhao School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China Department of Electronic Engineering Tsinghua UniversityBeijing 100080China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100080China

Secure authentication between user equipment and 5G core network is a critical issue for 5G ***,the traditional authentication protocol 5 G-AKA and the centralized key database are at risk of several security problems,*** leakage,impersonation attack,MitM attack and single point of *** this paper,a blockchain based asymmetric authentication and key agreement protocol(BC-AKA)is proposed for distributed 5G core *** particular,the key used in the authentication process is replaced from a symmetric key to an asymmetric key,and the database used to store keys in conventional 5G core network is replaced with a blockchain network.A proof of concept system for distributed 5G core network is built based on Ethereum and ECC-Secp256 k1,and the efficiency and effectiveness of the proposed scheme are verified by the experiment results.

关键词： blockchain asymmetric authentication key agreement distributed core network 5G

来源：评论

学校读者我要写书评

暂无评论

Separation and analysis of six fractions in low temperature coal tar by column chromatography

引用

Chinese Journal of Chemical Engineering 2023年第6期58卷 256-265页

作者： Shuangtai Liu Lei He Qiuxiang Yao Xi Li Linyang Wang Jing Wang Ming Sun Xiaoxun Ma School of Chemical Engineering Northwest UniversityInternational Science&Technology Cooperation Base of MOST for Clean Utilization of Hydrocarbon ResourcesChemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei EnergyShaanxi Research Center of Engineering Technology for CleanSchool of Chemical EngineeringNorthwest UniversityInternational Science&Technology Cooperation Base of MOST for Clean Utiliza School of Electronic Information Xijing UniversityXi’an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion DeviceXi’an 710123China

The low temperature coal tar(CT)is taken as the raw material,and the extraction and column chromatography are used for detailed and accurate characterization in this *** n-heptane soluble fraction(CT-HS)and insoluble fraction(CT-HI)were obtained by n-heptane Soxhlet *** extraction rate of CT-HS reached 92.79%(mass),which indicated that there are few heavy compounds in ***,different solvents(methylbenzene,benzene,ethyl acetate,methylbenzene-ethanol)were used to elute CT-HS by chromatographic column to obtain five fractions(saturates,aromatics,heteroatoms,phenolics and resins,named CT-SA,CT-AR,CT-HE,CT-PH,CT-RE,respectively).The yields of CTSA,CT-AR,CT-HE,CT-PH,CT-RE are 42.12%,10.43%,2.19%,9.50%and 6.63%(mass),*** chromatography-mass spectrometry analysis of eluting components show that alkanes are the main components in CT,followed by polycyclic aromatics,and the corresponding fractions are CT-SA and CT-AR,*** relative content of aliphatics in CT-SA is 76.93%,and the relative content of aromatics in CT-AR is 75.05%.This separation technology effectively separates and enriches different components in CT,and the activation energy required for the pyrolysis process of a single eluting fraction is lower than that of CT,which is expected to provide an important reference for the separation,analysis and conversion of complex oil products such as coal-oil co-processing products,coal tar and other complex heavy carbon oil products.

关键词： Low temperature coal tar Extractive separation Column chromatography isolation Chromatography/mass spectrometry

来源：评论

学校读者我要写书评

暂无评论

3D hierarchical porous Cr2O3 nanomaterials for high performance dimethyl disulfide gas sensor

引用

Ceramics International 2025年第16期51卷 22067-22074页

作者： Guo, Wen Deng, Zanhong Zhang, Ruofan Klamchuen, Annop Horprathum, Mati Wang, Shimao Fang, Xiaodong You, Libing Meng, Gang Institutes of Physical Science and Information Technology Anhui University Hefei230601 China Anhui Provincial Key Laboratory of Photonic Devices and Materials Anhui Institute of Optics and Fine Mechanics And Key Lab of Photovoltaic and Energy Conservation Materials Chinese Academy of Sciences Hefei230031 China Advanced Laser Technology Laboratory of Anhui Province Hefei230037 China Wan Jiang Emerging Industry Technology Development Center Tongling244000 China National Nanotechnology Center National Science and Technology Development Agency Pathum Thani12120 Thailand Opto-Electrochemical Sensing Research Team Spectroscopic and Sensing Devices Research Group National Electronics and Computer Technology Center Pathum Thani12120 Thailand College of New Materials and New Energies Shenzhen Technology University Shenzhen518118 China Shenzhen Shengfang Technology Company Limited Shenzheng518116 China

Dimethyl disulfide (DMDS) is one of the malodorous gases mandatorily monitored by the government. Developing highly sensitive and selective DMDS sensors based on metal oxide semiconductor (MOS) is an urgent requirement and remains a challenge. In this study, 3D hierarchical mesoporous Cr2O3 nanoparticles were successfully synthesized by a time- and cost-efficient solution combustion synthesis method. The sensing performances of the as-synthesized mesoporous Cr2O3 nanoparticles have been thoroughly investigated. The sensor demonstrated a high response of 102 to 10 ppm DMDS at working temperature of 140 °C, along with satisfactory selectivity and long-term stability, indicating a promising future in DMDS detection. © 2025

关键词： Combustion synthesis

来源：评论

学校读者我要写书评

暂无评论

Cross-Modality Prompts: Few-Shot Multi-Label Recognition With Single-Label Training

引用

IEEE Transactions on Multimedia 2025年 27卷 3023-3033页

作者： Ding, Zixuan Zhou, Zihan Chen, Hui Hao, Tianxiang Xiong, Yizhe Zhao, Sicheng Zhang, Qiang Han, Jungong Xidian University State Key Laboratory of Electromechanical Integrated Manufacturing of High-Performance Electronic Equipments Xi'an710071 China Xidian University Center for Complex Systems School of Mechano-Electronic Engineering Xi'an710071 China Tsinghua University School of Software Beijing100190 China Tsinghua University Beijing National Research Center for Information Science and Technology Beijing100190 China Tsinghua University Department of Automation Beijing100190 China

Few-shot multi-label recognition (FS-MLR) presents a significant challenge due to the need to assign multiple labels to images with limited examples. Existing methods often struggle to balance the learning of novel classes and the retention of knowledge from base classes. To address this issue, we propose a novel Cross-Modality Prompts (CMP) approach. Unlike conventional methods that rely on additional semantic information to mitigate the impact of limited samples, our approach leverages multimodal prompts to adaptively tune the feature extraction network. A new FS-MLR benchmark is also proposed, which includes single-label training and multi-label testing, accompanied by benchmark datasets constructed from MS-COCO and NUS-WIDE. Extensive experiments on these datasets demonstrate the superior performance of our CMP approach, highlighting its effectiveness and adaptability. Our results show that CMP outperforms CoOp on the MS-COCO dataset with a maximal improvement of 19.47% and 23.94% in mAPharmonic for 5-way 1-shot and 5-way 5-shot settings, respectively. © 1999-2012 IEEE.

关键词： Zero-shot learning

来源：评论

学校读者我要写书评

暂无评论

High-speed aircraft position and attitude control using reinforcement learning 2

High-speed aircraft position and attitude control using rein...

引用

2nd International Conference on Robotics, Artificial Intelligence and Intelligent Control, RAIIC 2023

作者： Zhang, Guichen Chen, Zhigang Xu, Mingxing Southwest University of Science and Technology School of Information Engineering Mianyang China Computational Aerodynamics Institute China Aerodynamics Research and Development Center Mianyang China

ISBN: (纸本)9798350328004

Aiming at the challenge of cruise phase control in high-speed aircraft, this paper introduces a novel approach for position and attitude controller design employing reinforcement learning techniques. Combined with the working environment of high-speed aircraft, the training environment of reinforcement learning algorithm is established utilizing the 3DOF longitudinal dynamic model. Considering that both the state and control signals in position and attitude control are continuous variables, a position and attitude controller design method based on double delay depth deterministic strategy gradient (TD3) theory is studied. Based on the actor-critic architecture, the controller undergoes a process of continuous learning through iterative interaction and experimentation with the system's environment. It effectively diminishes the reliance on highly accurate aircraft models. Simulation outcomes affirm the superior performance of the TD3-based position and attitude controller in comparison to counterparts relying on PID, NDI, or LQR. This TD3-based controller not only achieves commendable control accuracy but also streamlines the controller design process by adopting an end-to-end approach. © 2023 IEEE.

关键词： Reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

High Accuracy Curve Reconstruction Based on Twisted Multicore Fiber and Twist Bias Calibration

High Accuracy Curve Reconstruction Based on Twisted Multicor...

引用

2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Yang, Keyuan Gui, Zhiyuan Ke, Changjian Xu, Zikang Liu, Deming School of Optical and Electronic Information Huazhong University of Science and Technology National Engineering Research Center of Next Generation Internet Access-system Wuhan China

A high accuracy curve reconstruction method based on twisted multicore fiber and twisted bias calibration is proposed. The reconstruction error is optimized from 7.43 mm to 1.41 mm after twist bias calibration. ©... 详细信息

ISBN: (纸本)9798350312614

关键词： Curve reconstruction RMSE twist bias calibration twisted MCF

来源：评论

学校读者我要写书评

暂无评论

Small ship detection based on YOLOX and Modified Gaussian Wasserstein Distance in SAR images

Small ship detection based on YOLOX and Modified Gaussian Wa...

引用

2022 International Conference on Geographic information and Remote Sensing technology, GIRST 2022

作者： Yu, Wenbo Li, Jiamu Wang, Yi Wang, Zijian Yu, Zhongjun Aerospace Information Research Institute CAS China School of Electronic Electrical and Communication Engineering UCAS Beijing China School of Technology BFU Research Center for Biodiversity Intelligent Monitoring

ISBN: (纸本)9781510662186

Due to the increase in data quantity, ship detection in Synthetic Aperture Radar (SAR) images has attracted numerous studies. As most ship targets are small and cover a few pixels in SAR images, the commonly used Intersection-over-union (IoU) metric which is sensitive to the location deviation of the bounding box is not suitable to measure the distance between two small ship boxes. To solve this problem, this paper proposes a small ships-oriented detection method based on YOLOX. First, as an anchor-free one-stage detector, YOLOX can achieve state-of-the-art performance without extra anchor parameters. To make a balance between detection accuracy and speed, YOLOX-tiny is adopted as the baseline network. Then, a modified Gaussian Wasserstein distance is proposed. By modeling the bounding boxes as 2D Gaussian distributions, the Modified Wasserstein Distance (MWD) can be used to measure the similarity between the boxes in network training and post-processing. Finally, the proposed method is verified on Large-Scale SAR Ship Detection Dataset-v1.0 (LS-SSDD-v1.0) and the experimental results show that the proposed MWD can effectively improve the detection performance on small ships. © 2023 SPIE.

关键词： Ships

来源：评论

学校读者我要写书评

暂无评论

EG56: research on Seismic Data Compensation Method Based on Micro-Logging Q Estimation: A Case Study in Desert Area 7

EG56: Research on Seismic Data Compensation Method Based on ...

引用

7th International Conference on Engineering Geophysics, ICEG 2023

作者： Wang, Deying Su, Qin Xu, Xingrong Zeng, Huahui Zhang, Kai Tian, Yancan Kou, Longjiang PetroChina Lanzhou730020 China University of Electronic Science and technology Chengdu611731 China China University of Petroleum East China QingDao266400 China Research and Development Center for Exploration and Development Technology of Ultra Deep Complex Oil and Gas Reservoirs CNPC Korla841000 China

Due to the significant absorption and attenuation of high-frequency energy of seismic reflection waves by surface sand dunes, data in desert areas typically suffer from low resolution, weak energy, and narrow frequency bandwidth. To address this issue, this paper proposes an integrated Q compensation processing method that achieves high fidelity and high resolution. This method aims to address the issue of inaccurate Q value estimation in traditional Q compensation methods. It conducts research on Q value estimation based on the constraint of micro-logging data. Firstly, the shallow Q values at shot points are inverted based on the frequency and amplitude attributes of the downhole and surface geophones from the micro-logging data. Then, the relative Q values at the shot points are obtained by combining the relative amplitude decay coefficients and the surface travel time using the spectral ratio method. After correcting the relative Q values in the deeper layers with the lithology quality factor, an interpolation is performed to obtain the Q field for a stable pre-stack Q compensation of the seismic data. This paper conducted experimental data processing on desert data using the proposed method, and the results demonstrated that it can further explore the potential of the data, compress wavelets, and enhance spatial consistency of the wavelets while maintaining fidelity. © 2024 7th International Conference on Engineering Geophysics, ICEG 2023. All rights reserved.

关键词： Lithology

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：