检索结果-内蒙古大学图书馆

Multi-Channel Based on Attention Network for Infrared Small Target Detection

Journal of Shanghai Jiaotong university(science) 2024年第3期29卷 414-427页

作者：张彦军王碧云蔡云泽 Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Aerospace Control Technology Shanghai 201109China Infrared Detection Technology R&D Center of China Aerospace Science and Technology Corporation Shanghai 201109China Key Laboratory of System Control and Information Processing Ministry of Education of ChinaShanghai 200240China Shanghai Engineering Research Center of Intelligent Control and Management Shanghai 200240China Key Laboratory of Marine Intelligent Equipment and System of Ministry of Education Shanghai Jiao Tong UniversityShanghai 200240China Institute of Marine Equipment Shanghai Jiao Tong UniversityShanghai 200240China

Infrared detection technology has the advantages of all-weather detection and good concealment,which is widely used in long-distance target detection and tracking ***,the complex background,the strong noise,and the characteristics of small scale and weak intensity of targets bring great difficulties to the detection of infrared small targets.A multi-channel based on attention network is proposed in this paper,aimed at the problem of high missed detection rate and false alarm rate of traditional algorithms and the problem of large model,high complexity and poor detection performance of deep learning ***,given the difficulty in extracting the features of infrared multiscale and small dim targets,the multiple channels are designed based on dilated convolution to capture multiscale target ***,the coordinate attention block is incorporated in each channel to suppress background clutters adaptively and enhance target *** addition,the fusion of shallow detail features and deep abstract semantic features is realized by synthesizing the contextual attention fusion ***,it is verified that,compared with other state-of-the-art methods based on the datasets SIRST and MDFA,the proposed algorithm further improves the detection effect,and the model size and computational complexity are smaller.

关键词： infrared image small target detection deep learning attention mechanism feature fusion

来源：评论

学校读者我要写书评

暂无评论

Characterization and comparison of organic functional groups effects on electrolyte performance for vanadium redox flow battery

引用

Frontiers of Chemical science and engineering 2023年第9期17卷 1221-1230页

作者： Ling Ge Tao Liu Yimin Zhang Hong Liu School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan430081China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium ResourcesWuhan University of Science and TechnologyWuhan430081China Collaborative Innovation Center of Strategic Vanadium Resources Utilization Wuhan University of Science and TechnologyWuhan430081China Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium Resource Wuhan University of Science and TechnologyWuhan430081China

The vanadium redox flow battery with a safe and capacity-controllable large-scale energy storage system offers a new method for the *** this case,acetic acid,methane sulfonic acid,sulfonic acid,amino methane sulfonic acid,and taurine are used to overcome the low electrolyte energy density and stability limitations,as well as to investigate the effects of various organic functional groups on the vanadium redox flow *** compared to the pristine electrolyte(0.22 Ah,5.0 Wh·L^(−1),85.0%),the results show that taurine has the advantage of maintaining vanadium ion concentrations,discharge capacity(1.43 Ah),energy density(33.9 Wh·L^(−1)),and energy efficiency(90.5%)even after several *** acetic acid electrolyte is more conducive to the low-temperature stability of the V(II)electrolyte(177 h at−25℃)than pristine(82 h at−2℃).The−SO_(3)H group,specifically the coaction of the−NH_(2)and−SO_(3)H groups,improves electrolyte ***−NH_(2)and−COOH additive groups improved conductivity and electrochemical activity.

关键词： vanadium redox flow battery functional groups organic additives energy density stability

来源：评论

学校读者我要写书评

暂无评论

Effect of transport agent boron triiodide on the synthesis and crystal quality of boron arsenide

引用

International Journal of Minerals,Metallurgy and Materials 2022年第4期29卷 662-670页

作者： Zhenxing Liu Fangjie Deng Yuan Zhou Yanjie Liang Cong Peng Bing Peng Feiping Zhao Zhihui Yang Liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China

Cubic boron arsenide(BAs)has attracted great attention due to its high thermal conductivity,however,its controllable,stable,and ideal preparation remains ***,we investigated the effect of iodine-containing transport agents I_(2) and boron triiodide(BI_(3))on BAs synthesized and grown through chemical vapor *** show that similar to the commonly used I_(2),BI_(3) accelerates the synthesis and improves the mass fraction of BAs from ~12% to over 90% at 820℃ and 1.5 MPa,a value beyond the promoting effect of only increasing temperature and *** agents enhance the quality of BAs crystals by reducing the full width at half maximum by up to 10%-20%.I_(2) agglomerates the grown crystals with twin defects(~50 nm wide),and BI_(3) improves the crystal anisotropy and element uniformity of BAs crystals with narrow twins(~15 nm wide)and increases the stoichiometry ratio(~0.990)to almost *** to the boron interstitials from the excessive boron supply,the spacing of layers in {111} increases to 0.286 nm in the presence of I_(2).Owing to its coordinated effect,BI_(3) only slightly influences the layer spacing at 0.275 nm,which is close to the theoretical value of 0.276 *** the chemical vapor transport,the anisotropic crystals with flat surfaces exhibit single-crystal characteristics under the action of BI_(3).Different from that of I_(2),the coordinated effect of BI_(3) can promote the efficient preparation of high-quality BAs crystal seeds and facilitate the advanced application of BAs.

关键词： boron arsenide transport agent boron-arsenic reaction iodine boron triiodide

来源：评论

学校读者我要写书评

暂无评论

Synthesis of Decoherence-Free Modes in Linear Quantum Passive Systems via Robust Pole Placement

Synthesis of Decoherence-Free Modes in Linear Quantum Passiv...

引用

2024 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2024

作者： Miao, Zibo Pan, Yu Gao, Qing School of Mechanical Engineering and Automation Adaptive Robotics Harbin Institute of Technology Guangdong Key Laboratory of Intelligent Morphing Mechanisms Shenzhen518055 China The Institute of Cyber-Systems and Control College of Control Science and Engineering Zhejiang University State Key Laboratory of Industrial Control Technology Hangzhou310027 China The School of Automation Science and Electrical Engineering Beijing Advanced Innovation Center for Big Data and Brain Computing Beihang University Beijing100191 China

ISBN: (纸本)9781665410205

In this paper we extend our previous research on coherent observer-based pole placement approach to study the synthesis of robust decoherence-free (DF) modes for linear quantum passive systems, which is aimed at preservation of quantum information. In particular, DF modes can be generated by placing the poles on the imaginary axis via a coherent feedback design scheme, and these modes can further be simultaneously made robust against perturbations to the system parameters by minimizing the condition number associated with imaginary poles. We develop explicit algebraic conditions for the existence of such a coherent quantum controller, with the corresponding deign procedure provided. Examples are given to illustrate the process of tuning the DF modes towards perfect robustness via the proposed pole placement technique. © 2024 IEEE.

关键词： Poles

来源：评论

学校读者我要写书评

暂无评论

Analysis of GC×GC fingerprints from medicinal materials using a novel contour detection algorithm:A case of Curcuma wenyujin

引用

Journal of Pharmaceutical Analysis 2024年第4期14卷 542-551页

作者： Xinyue Yang Yingyu Sima Xuhuai Luo Yaping Li Min He Department of Pharmaceutical Engineering School of Chemical EngineeringXiangtan UniversityXiangtanHunan411105China Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha410082China Department of Quality Control Xiangtan Central HospitalXiangtanHunan411100China

This study introduces an innovative contour detection algorithm,PeakCET,designed for rapid and efficient analysis of natural product image fingerprints using comprehensive two-dimensional gas chromatogram(GC×GC).This method innovatively combines contour edge tracking with affinity propagation(AP)clustering for peak detection in GC×GC fingerprints,the first in this *** edge tracking signif-icantly reduces false positives caused by“burr”signals,while AP clustering enhances detection accuracy in the face of false *** efficacy of this approach is demonstrated using three medicinal products derived from Curcuma *** not only performs contour detection but also employs inter-group peak matching and peak-volume percentage calculations to assess the compositional similarities and differences among various ***,this algorithm compares the GC×GC fingerprints of Radix/Rhizoma Curcumae Wenyujin with those of products from different botanical *** findings reveal that genetic and geographical factors influence the accumulation of secondary metabolites in various plant *** sample exhibits unique characteristic components alongside common ones,and vari-ations in content may influence their therapeutic *** research establishes a foundational data-set for the quality assessment of Curcuma products and paves the way for the application of computer vision techniques in two-dimensional(2D)fingerprint analysis of GC×GC data.

关键词： GC×GC Image fingerprints Contour detection Clustering of mass spectra Curcuma products

来源：评论

学校读者我要写书评

暂无评论

Rate Bumpless Transfer control for Switched Affine Systems with its Application to Turbofan Engine Model 14

Rate Bumpless Transfer Control for Switched Affine Systems w...

引用

14th Asian control Conference, ASCC 2024

作者： Zhao, Ying Ni, Xinyu Xu, Changyi Liu, Yanyan Li, Xie Gao, Haoyang School of Marine Electrical Engineering Dalian Maritime University Dalian China School of Control Science and Engineering Dalian University of Technology China Shenyang Engine Research Institute Shenyang China

ISBN: (纸本)9789887581598

This work investigates the rate bumpless transfer (RBT) control issue of switched affine systems (SASs). First, a RBT definition related to the affine term of the SAS is introduced to reduce and suppress the bumps of system rate for the first time. Then, through the joint design of a state-feedback controller and a switching director, a RBT control scheme is proposed. Furthermore, a criterion is provided to enable the SAS to simultaneously satisfy RBT performance and stability. Finally, a turbofan engine simulation example is presented to validate the effectiveness of the suggested RBT control strategy. © 2024 Asian control Association.

关键词： State feedback

来源：评论

学校读者我要写书评

暂无评论

Segmentation, Tracking, and Safety Operation Monitoring of Tower Cranes based on MobileSAM and ByteTrack 43

Segmentation, Tracking, and Safety Operation Monitoring of T...

引用

43rd Chinese control Conference, CCC 2024

作者： Wang, Jiating Liu, Weifeng Xu, Chuanzhao Song, Mingzhen Shaanxi University of Science and Technology School of Electrical and Control Engineering Xi'an710016 China China Jikan Research Institute of Engineering Investigations and Design Co Ltd Xi'an710016 China

ISBN: (纸本)9789887581581

This paper proposes a segmentation, tracking, and monitoring method for tower cranes facing non-working rotation and settlement issues under complex load and working conditions, based on MobileSAM and ByteTrack. Firstly, MobileSAM is employed for zero-shot segmentation of tower cranes. Subsequently, YOLOv8+ByteTrack is combined to track the operation of tower cranes. Finally, real-time safety monitoring of tower cranes is achieved by establishing monitoring reference points. Experimental results show that, under the same conditions, MobileSAM achieves rapid and complete segmentation of tower cranes, with a processing speed ten times faster than SAM. YOLOv8+ByteTrack enables real-time monitoring of the operation status of tower cranes, providing a data foundation for safety event warnings such as tower crane tilting and settling. © 2024 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Tower cranes

来源：评论

学校读者我要写书评

暂无评论

Strong metal-support interaction (SMSI) in environmental catalysis: Mechanisms, application, regulation strategies, and breakthroughs

引用

Environmental science and Ecotechnology 2024年第6期22卷 7-24页

作者： Fuyuan Qi Jianfei Peng Zilu Liang Jiliang Guo Jiayuan Liu Tiange Fang Hongjun Mao Tianjin Key Laboratory of Urban Transport Emission Research&State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control College of Environmental Science and EngineeringNankai UniversityTianjin300071China

The strong metal-support interaction(SMSI)in supported catalysts plays a dominant role in catalytic degradation,upgrading,and remanufacturing of environmental *** studies have shown that SMSI is crucial in supported catalysts'activity and ***,for redox reactions catalyzed in environmental catalysis,the enhancement mechanism of SMSI-induced oxygen vacancy and electron transfer needs to be ***,the precise control of SMSI interface sites remains to be fully *** we provide a systematic review of SMSI's catalytic mechanisms and control strategies in purifying gaseous pollutants,treating organic wastewater,and valorizing biomass solid *** explore the adsorption and activation mechanisms of SMSI in redox reactions by examining interfacial electron transfer,interfacial oxygen vacancy,and interfacial acidic ***,we develop a precise regulation strategy of SMSI from systematical perspectives of interface effect,crystal facet effect,size effect,guest ion doping,and modification ***,we point out the drawbacks and breakthrough directions for SMSI regulation in environmental catalysis,including partial encapsulation strategy,size optimization strategy,interface oxygen vacancy strategy,and multi-component *** review article provides the potential applications of SMSI and offers guidance for its controlled regulation in environmental catalysis.

关键词： Environmental catalysis Metal oxide supported catalysts Strong metal-support interaction(SMSI) Interfacial site regulation Electron transfer

来源：评论

学校读者我要写书评

暂无评论

Human exposure to a mixture of endocrine disruptors and serum levels of thyroid hormones:A cross-sectional study

引用

Journal of Environmental sciences 2023年第3期125卷 641-649页

作者： Bing Yue Shangyong Ning Hongjian Miao Congrong Fang Jingguang Li Lei Zhang Yan Bao Sai Fan Yunfeng Zhao Yongning Wu NHC Key Laboratory of Food Safety Risk Assessment Chinese Academy of Medical Science Research Unit(No.2019RU014)China National Center for Food Safety Risk AssessmentBeijing 100022China Hematology Department Beijing HospitalNational Center of GerontologyBeijing 100730China Beijing Center for Disease Prevention and Control Beijing Research Center for Preventive MedicineBeijing 100013China

Exposure to endocrine disruptors(EDCs) could disrupt thyroid hormone homeostasis. However, human epidemiological studies reported inconsistent observations, and scarce information on the effect of a mixture of chemicals. The aim of the present study was to examine the associations of multiple chemicals with thyroid hormones among adults from China. We measured serum levels of thyroid hormones and urinary levels of 11 EDCs, including six phthalate metabolites, bisphenol A(BPA), bisphenol F(BPF), bisphenol S(BPS), perchlorate, and thiocyanate among 177 healthy adults without occupational exposure. Associations of multiple urinary analytes with serum thyroid hormones were examined by performing general linear regression analysis and bayesian kernal machine regression analysis. These EDCs were detected in almost all samples. After adjusting for various covariates, we observed only BPF significantly associated with total thyroxin(TT4)(β=-0.27, 95% confidence interval(CI) [-0.41,-0.14]), total triiodothyronine(TT3)(β=-0.02 95% CI [-0.03,-0.01]), free T4(fT4)(β=-0.02, 95% CI [-0.03,-0.01]), and free T3(fT3)(β=-0.04, 95% CI [-0.07,-0.01]), and mono-(2-ethyl-5-oxohexyl) phthalate(MEOHP) and monoethyl phthalate(MEP) positively associated with TT4(β=0.24, 95% CI [0.01, 0.48]) and fT4(β=0.02, 95% CI [0.01, 0.04]), respectively. Moreover, we observed significant dose-response relationships between TT4 and the mixture of11 EDCs, and BPF was the main contributor to the mixture effect, suggesting the priority of potential effect of BPF on disrupting thyroid function under a real scenario of human exposure to multiple EDCs. Our findings supported the hypothesis that human exposure to low levels of EDCs could alter thyroid hormones homeostasis among non-occupational healthy adults.

关键词： Human urine Endocrine disruptors Joint effect Thyroid hormones

来源：评论

学校读者我要写书评

暂无评论

Efficient Pt/KFI zeolite catalysts for the selective catalytic reduction of NOxby hydrogen

引用

Journal of Environmental sciences 2024年第4期138卷 102-111页

作者： Ligang Zhang Yulong Shan Zidi Yan Zhongqi Liu Yunbo Yu Hong He School of Rare Earths University of Science and Technology of ChinaHefei 230026China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341119China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Aiming at purification of NO_(x)from hydrogen internal combustion engines(HICEs),the hydrogen selective catalytic reduction(H_(2)-SCR)reaction was investigated over a series of Pt/KFI zeolite catalysts.H_(2)can readily reduce NO_(x)to N_(2)and N_(2)O while O_(2)inhibited the deNO_(x)efficiency by consuming the reductant H_(2).The Pt/KFI zeolite catalysts with Pt loading below 0.1wt.% are optimized H_(2)-SCR catalysts due to its suitable operation temperature window since high Pt loading favors the H_(2)-O_(2)reaction which lead to the insufficient of *** to metal Pt^(0)species,Pt^(δ+)species showed lower activation energy of H_(2)-SCR reaction and thought to be as reasonable active ***,Eley-Rideal(E-R)reaction mechanism was proposed as evidenced by the reaction orders in kinetic ***,the optimized reactor was designed with hybrid Pt/KFI catalysts with various Pt loading which achieve a high NO_(x)conversion in a wide temperature range.

关键词： Pt/KFI zeolite Pt loading H_(2)-SCR Reaction conditions Kinetics studies

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：