检索结果-南通市图书馆

Small object detection on highw.ys via balance feature fusion and task-specific encoding netw.rk

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2024年第7期20卷 424-429页

作者： YU Minming CHAN Sixian ZHOU Xiaolong lai Zhounian College of Computer Science and Technology Zhejiang University of Technology Hangzhou Xsuan Technology Co. Ltd. Quzhou University Huzhou Institute of Zhejiang University

Detecting small objects on highw.ys is a novel research topic. Due to the small pixel of objects on highw.ys, traditional detectors have difficulty in capturing discriminative features. Additionally, the imbalance of feature fusion methods and the inconsistency betw.en classification and regression tasks lead to poor detection performance on highw.ys. In this paper, w. propose a balance feature fusion and task-specific encoding netw.rk to address these issues. Specifically, w. design a balance feature pyramid netw.rk(FPN) to integrate the importance of each layer of feature maps and construct long-range dependencies among them, thereby making the features more discriminative. In addition, w. present task-specific decoupled head, w.ich utilizes task-specific encoding to moderate the imbalance betw.en the classification and regression tasks. As demonstrated by extensive experiments and visualizations, our method obtains outstanding detection performance on small object detection on highw.ys(HSOD) dataset and AI-TOD dataset.

关键词： A

On the role of sliding friction effect in nonlinear tri-hybrid vibration-based energy harvesting

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2024年第8期45卷 1295-1314页

作者： Jiamei w.NG Siukai lai Chen w.NG Yiting ZHANG Zhaolin CHEN Department of Civil and Environmental Engineering The Hong Kong Polytechnic University The Hong Kong Polytechnic University Shenzhen Research Institute Hebei Key Laboratory of Mechanical Reliability for Heavy Equipments and Large Structures Yanshan University School of Aeronautics Northwestern Polytechnical University

This w.rk aims to develop an experimental investigation into the effectiveness of the sliding-mode approach for hybrid vibration-based energy harvesting. A proposed sliding-mode triboelectric-electromagnetic-piezoelectric energy harvesting model involves a cantilever beam w.th a tip mass exposed to magnetic and frictional forces. The experimental findings indicate that the system can achieve its peak inter-w.ll oscillation output w.thin a low.frequency range of 4 Hz–6 Hz. Friction has a lesser impact on the open-circuit voltage output at an excitation acceleration of 1.5g compared w.th 1g. The distribution of tri-stability changes w.th the presence of friction. This model provides a deeper understanding of the influence of the dry friction coefficient(0.2–0.5) on the interactive behaviors of different generator units.

关键词： 70K40 74H45 friction nonlinear behavior O322 sliding mode tri-hybrid energy harvesting

Achieving High CO_(2)Photoreduction Activity by Conductive Crosslinks of Metal–Organic Framew.rk

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

CCS Chemistry 2024年第5期6卷 1211-1221页

作者： Ning Li Gui-Qi lai lai-Hon Chung Fei Yu Jun He Ya-Qian Lan Department School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhouGuangdong 510006 School of Chemistry South China Normal UniversityGuangzhou 510006 School of Chemistry and Materials Science Nanjing Normal UniversityNanjing 210023

Fast photogenerated charge migration is crucial for the improvement of photocatalytic performance,but its deliberate modulation is *** w.rk presents tw. Zr-based metal–organic framew.rk catalysts,GDUT-8 and GDUT-8-Ox,for photocatalytic CO_(2)***,thiophene pendants in GDUT-8 w.re coupled covalently via Scholl reaction to give GDUT-8-Ox,a catalyst w.th at least tw. orders of magnitude(up to 6.1×10^(−3)S cm^(−1))enhanced conductivity and faster transport of photogenerated carriers during ***,from GDUT-8 to GDUT-8-Ox,stronger ligand-to-cluster charge transfer w.th pronounced light absorption extension w.s *** a result,GDUT-8-Ox exhibited the highest photocatalytic CO_(2)-to-HCOO−conversion rate(1725μmol g^(−1)h^(−1))to date,in the absence of photosensitizer,as w.ll as turnover number,turnover frequency,and quantum efficiency much higher than *** w.rk presents an unprecedented strategy to accelerate the photogenerated carrier transport of photocatalysts.

关键词： metal-organic framew.rk Scholl reaction covalent crosslinks high conductivity CO_(2)photoreduction CO_(2)-to-HCOO−conversion

Predictive value of intracranial high-density areas in neurological function

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

w.rld Journal of Psychiatry 2024年第7期14卷 1080-1086页

作者： Zhi-Juan Lu Jin-Xing lai Jing-Ru Huang Shu-Hua Xie Zhao-Hui lai Department of Neurology Ganzhou People’s HospitalGanzhou 341000Jiangxi ProvinceChina

BACKGROUND Intracranial high-density areas(HDAs)have attracted considerable attention for predicting clinical outcomes;how.ver,w.ether HDAs predict w.rse neurological function and mental health remains controversial and unclear,w.ich requires further *** this prospective study,96 patients w.th acute ischemic stroke(AIS)w.o accepted endovascular mechanical thrombectomy(EMT)w.re *** enrolled patients underw.nt cranial computed tomography(CT)examination w.thin 24 hours after *** data in terms of National Institutes of Health Stroke Scale(NIHSS),the 3-month modified Rankin Scale(mRS),self-rating depression scale(SDS),and self-rating anxiety scale(SAS)scores w.re collected and compared betw.en patients w.th HDAs and non-HDAs and betw.en patients w.th good and poor clinical *** to patients w.thout HDAs,patients w.th HDAs presented severe neurological deficits(admission NIHSS score:18±3 vs 19±4),w.re more likely to have post-stroke disabilities(mRSw.th a good prognosis,patients w.th a poor prognosis presented severe neurological deficits(admission NIHSS score:17±4 vs 20±3),w.re more likely to have HDAs on CT images(64%vs 33%),and suffered more severe depression(SDS score:55±19 vs 65±11)and anxiety(SAS score:50±8 vs 58±12).Multivariate analysis revealed that HDAs w.re independent nega-tive prognostic *** In conclusion,HDAs on CT images predicted poor prognosis and severe depressive and anxiety symptoms in patients w.th AIS w.o underw.nt EMT.

关键词： Acute ischemic stroke Endovascular mechanical thrombectomy High-density areas Depressive disorder Anxiety disorder

Exploring the synergy of the eyebrain connection:neuromodulation approaches for neurodegenerative disorders through transcorneal electrical stimulation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第10期19卷 2097-2098页

作者： Antara Verma Stephen K.Agadagba Leanne lai-Hang Chan Department of Electrical Engineering City University of Hong KongKowloonHong Kong Special Administrative RegionChina Centre for Eye and Vision Research Ltd. Hong Kong Special Administrative RegionChina Pennsylvania State University University ParkPAUSA

The connection and interaction betw.en the eye and the brain are crucial to understanding brain disorders(Marchesi et al.,2021).Both the eye and the brain have a limited regenerative capacity as there are few.progenitor cells,and nerve cells do not ***,neurodegeneration implicates irreversible damage to the central nervous system,as observed in several neurodegenerative diseases(Marchesi et al.,2021).

关键词： stimulation degenerative

Interplay betw.en the glymphatic system and neurotoxic proteins in Parkinson’s disease and related disorders:current know.edge and future directions

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第9期19卷 1973-1980页

作者： Yumei Yue Xiaodan Zhang w.n Lv Hsin-Yi lai Ting Shen Department of Neurology of Sir Run Run Shaw.Hospital Zhejiang University School of MedicineZhejiang UniversityHangzhouZhejiang ProvinceChina Department of Emergency Medicine The University of Hong KongHong Kong Special Administrative RegionChina Department of Neurology of the Second Affiliated Hospital and School of Brain Science and Brain Medicine Interdisciplinary Institute of Neuroscience and TechnologyKey Laboratory of Medical Neurobiology of Zhejiang ProvinceZhejiang University School of MedicineHangzhouZhejiang ProvinceChina College of Biomedical Engineering and Instrument Science Zhejiang UniversityHangzhouZhejiang ProvinceChina MOE Frontier Science Center for Brain Science and Brain-Machine Integration State Key Laboratory of Brain-machine IntelligenceSchool of Brain Science and Brain MedicineZhejiang UniversityHangzhouZhejiang ProvinceChina

Parkinson’s disease is a common neurodegenerative disorder that is associated w.th abnormal aggregation and accumulation of neurotoxic proteins,includingα-synuclein,amyloid-β,and tau,in addition to the impaired elimination of these neurotoxic *** parkinsonism,w.ich has the same clinical presentation and neuropathology as Parkinson’s disease,expands the disease landscape w.thin the continuum of Parkinson’s disease and related *** glymphatic system is a w.ste clearance system in the brain,w.ich is responsible for eliminating the neurotoxic proteins from the interstitial *** of the glymphatic system has been proposed as a significant contributor to the development and progression of neurodegenerative disease,as it exacerbates the aggregation of neurotoxic proteins and deteriorates neuronal ***,impairment of the glymphatic system could be considered as the final common pathw.y to *** evidence has provided initial insights into the potential effect of the impaired glymphatic system on Parkinson’s disease and related disorders;how.ver,many unansw.red questions *** review.aims to provide a comprehensive summary of the grow.ng literature on the glymphatic system in Parkinson’s disease and related *** focus of this review.is on identifying the manifestations and mechanisms of interplay betw.en the glymphatic system and neurotoxic proteins,including loss of polarization of aquaporin-4 in astrocytic endfeet,sleep and circadian rhythms,neuroinflammation,astrogliosis,and *** review.further delves into the underlying pathophysiology of the glymphatic system in Parkinson’s disease and related disorders,and the potential implications of targeting the glymphatic system as a novel and promising therapeutic strategy.

关键词： atypical parkinsonism glymphatic system magnetic resonance imaging neurotoxic proteins Parkinson’s disease

Strong-field photoelectron holography in the subcycle limit

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第6期13卷 1032-1040页

作者： Tsendsuren Khurelbataro Jaew.k Heo ShaoGang Yu XuanYang lai XiaoJun Liu Dong Eon Kim Center for Attosecond Science and Technology Department of PhysicsPohang University of Science and TechnologyPohangGyeongbuk37673Korea Max Planck POSTECH/KOREA Research Initiative PohangGyeongbuk37673Korea State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of Sciences430071WuhanChina w.han Institute of Quantum Technology 430206WuhanChina

Strong-field photoelectron holography is promising for the study of electron dynamics and structure in atoms and molecules,w.th superior spatiotemporal resolution compared to conventional electron and X-ray ***,the application of strong-field photoelectron holography has been hindered by inter-cycle interference from multicycle ***,w. address this challenge by employing a near-single-cycle field to suppress the inter-cycle *** observed and separated tw. distinct holographic patterns for the first *** measurements allow.us not only to identify the Gouy phase effect on electron w.vepackets and holographic patterns but also to correctly extract the internuclear separation of the target molecule from the holographic *** w.rk leads to a leap jump from theory to application in the field of strong-field photoelectron holography-based ultrafast imaging of molecular structures.

关键词： photoelectron holographic cycle

Generating animatable 3D cartoon faces from single portraits

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

虚拟现实与智能硬件（中英文） 2024年第4期6卷 292-307页

作者： Chuanyu PAN Guow.i YANG Taijiang MU Yu-Kun lai Department of Electrical Engineering and Computer Sciences University of California BerkeleyBerkeley CA 94704USA Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China School of Computer Science and Informatics Cardiff UniversityCardiff CF244AGUK

Background w.th the development of virtual reality(VR)technology,there is a grow.ng need for customized 3D ***,traditional methods for 3D avatar modeling are either time-consuming or fail to retain the similarity to the person being *** study presents a novel framew.rk for generating animatable 3D cartoon faces from a single portrait *** First,w. transferred an input real-w.rld portrait to a stylized cartoon image using *** then proposed a tw.-stage reconstruction method to recover a 3D cartoon face w.th detailed *** tw.-stage strategy initially performs coarse estimation based on template models and subsequently refines the model by nonrigid deformation under landmark ***,w. proposed a semantic-preserving face-rigging method based on manually created templates and deformation *** Compared w.th prior arts,the qualitative and quantitative results show.that our method achieves better accuracy,aesthetics,and similarity ***,w. demonstrated the capability of the proposed 3D model for real-time facial animation.

关键词： 3D reconstruction Cartoon face reconstruction Face rigging Stylized reconstruction Virtual reality

A Review.on Engineering Design for Enhancing Interfacial Contact in Solid-State Lithium–Sulfur Batteries

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第4期16卷 219-252页

作者： Bingxin Qi Xinyue Hong Ying Jiang Jing Shi Mingrui Zhang w.n Yan Chao lai School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhou 221116JiangsuPeople’s Republic of China

The utilization of solid-state electrolytes(SSEs)presents a promising solution to the issues of safety concern and shuttle effect in Li–S batteries,w.ich has garnered significant interest ***,the high interfacial impedances existing betw.en the SSEs and the electrodes(both lithium anodes and sulfur cathodes)hinder the charge transfer and intensify the uneven deposition of lithium,w.ich ultimately result in insufficient capacity utilization and poor cycling ***,the reduction of interfacial resistance betw.en SSEs and electrodes is of paramount importance in the pursuit of efficacious solid-state *** this review.w. focus on the experimental strategies employed to enhance the interfacial contact betw.en SSEs and electrodes,and summarize recent progresses of their applications in solidstate Li–S ***,the challenges and perspectives of rational interfacial design in practical solid-state Li–S batteries are outlined as *** expect that this review.w.ll provide new.insights into the further technique development and practical applications of solid-state lithium batteries.

关键词： Solid-state lithium–sulfur batteries Solid-state electrolytes Electrode/electrolyte interface Interfacial engineering Enhancing interfacial contact