检索结果-南通市图书馆

3D computational modeling and perceptual analysis of kinetic depth effects

在线全文

学校读者我要写书评

暂无评论

Computational Visual Media 2020年第3期6卷 265-277页

作者： meng-yao cui Shao-Ping Lu Miao Wang Yong-Liang Yang Yu-Kun Lai Paul L.Rosin TKLNDST CSNankai UniversityTianjinChina State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Computer Science University of BathUK School of Computer Science and Informatics Cardiff UniversityWalesUK

Humans have the ability to perceive kinetic depth effects, i.e., to perceived 3 D shapes from 2 D projections of rotating 3 D objects. This process is based on a variety of visual cues such as lighting and shading effects. However, when such cues are weak or missing, perception can become faulty, as demonstrated by the famous silhouette illusion example of the spinning dancer. Inspired by this, we establish objective and subjective evaluation models of rotated3 D objects by taking their projected 2 D images as input. We investigate five different cues: ambient luminance, shading, rotation speed, perspective, and color difference between the objects and *** the objective evaluation model, we first apply3 D reconstruction algorithms to obtain an objective reconstruction quality metric, and then use quadratic stepwise regression analysis to determine weights of depth cues to represent the reconstruction quality. In the subjective evaluation model, we use a comprehensive user study to reveal correlations with reaction time and accuracy, rotation speed, and perspective. The two evaluation models are generally consistent, and potentially of benefit to inter-disciplinary research into visual perception and 3 D reconstruction.

关键词： rotation spinning rotating

Clinical practice guidelines for ductal carcinoma in situ: Chinese Society of Breast Surgery (CSBrS) practice guidelines 2021

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2021年第13期134卷 1519-1521页

作者： Ang Zheng Zi-Ning Jin meng-yao cui Bo Chen Fan yao Feng Jin Ying-Ying Xu Chinese Society of Breast Surgery Department of Breast Surgery The Rrst Affiliated Hospital of China Medical UniversityShenyangLiaoning 110001China 不详

Ductal carcinoma in situ(DCIS),also known as intraductal carcinoma,is an in situ carcinoma limited to the mammary *** gold-standard screening,diagnostic,and treatment options have long been *** Chinese Society of Breast Surgery(CSBrS)has re-evaluated the quality of the clinical study evidence on *** order to standardize the diagnosis and treatment of DCIS and provide a reference for Chinese breast surgeons,the CSBrS has used the Grading of Recommendations Assessment,Development,and Evaluation handbook while referring to its feasibility in the actual clinical practice of Chinese breast surgeons to develop the CSBrS Clinical Practice Guideline for the Diagnosis and Treatment of Ductal Carcinoma In Situ(2021).

关键词： Surgery diagnosis treatment

Photo‑Energized MoS_(2)/CNT Cathode for High‑Performance Li–CO_(2)Batteries in a Wide‑Temperature Range

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 160-175页

作者： Tingsong Hu Wenyi Lian Kang Hu Qiuju Li Xueliang cui Tengyu yao Laifa Shen Jiangsu Key Laboratory of Materials and Technologies for Energy Storage College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Li–CO_(2) batteries are considered promising energy storage systems in extreme environments such as Mars;however,severe performance degradation will occur at a subzero temperature owning to the sluggish reaction ***,a photo-energized strategy adopting sustainable solar energy in wide working temperature range Li–CO_(2) battery was achieved with a binder-free MoS_(2)/carbon nanotube(CNT)photo-electrode as *** unique layered structure and excellent photoelectric properties of MoS_(2) facilitate the abundant generation and rapid transfer of photo-excited carriers,which accelerate the CO_(2) reduction and Li_(2)CO_(3) decomposition upon *** illuminated battery at room temperature exhibited high discharge voltage of 2.95 V and mitigated charge voltage of 3.27 V,attaining superior energy efficiency of 90.2%and excellent cycling stability of over 120 *** at an extremely low temperature of−30℃,the battery with same electrolyte can still deliver a small polarization of 0.45 V by the photoelectric and photothermal synergistic mechanism of MoS_(2)/CNT *** work demonstrates the promising potential of the photo-energized wide working temperature range Li–CO_(2) battery in addressing the obstacle of charge overpotential and energy efficiency.

关键词： Li-CO_(2)batteries Photo-energized Wide operation-temperature Kinetics MoS_(2)

A Novel Model for Describing Rail Weld Irregularities and Predicting Wheel-Rail Forces Using a Machine Learning Approach

在线全文

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2025年第1期142卷 555-577页

作者： Linlin Sun Zihui Wang Shukun cui Ziquan Yan Weiping Hu Qingchun meng State Key Laboratory of High-Speed Railway Track System China Academy of Railway Sciences Corporation LimitedBeijing100081China Railway Engineering Research Institute China Academy of Railway Sciences Corporation LimitedBeijing100081China School of Aeronautic Science and Engineering Beihang UniversityBeijing100191China

Rail weld irregularities are one of the primary excitation sources for vehicle-track interaction dynamics in modern high-speed *** can cause significant wheel-rail dynamic interactions,leading to wheel-rail noise,component damage,and *** researchers have employed the vehicle-track interaction dynamic model to study the dynamic interactions between wheel and rail induced by rail weld geometry ***,the cosine wave model used to simulate rail weld irregularities mainly focuses on the maximum value and neglects the geometric *** this study,novel theoretical models were developed for three categories of rail weld irregularities,based on measurements of the high-speed railway from Beijing to *** vertical dynamic forces in the time and frequency domains were compared under different running *** forces generated by the rail weld irregularities that were measured and modeled,respectively,were compared to validate the accuracy of the proposed ***,based on the numerical study,the impact force due to rail weld irrregularity is modeled using an Artificial Neural Network(ANN),and the optimum combination of parameters for this model is *** results showed that the proposed model provided a more accurate wheel/rail dynamic evaluation caused by rail weld irregularities than that established in the *** ANN model used in this paper can effectively predict the impact force due to rail weld irrregularity while reducing the computation time.

关键词： Rail weld irregularity high-speed railway vehicle-track coupled dynamics wheel/rail dynamic vertical force artificial neural networks

CEO自恋对高管团队成员工作幸福感的影响:CEO谦卑与领导关系认同的作用

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

管理工程学报 2025年第2期39卷 206-220页

作者：尹奎赵景宋萌崔国东董念念北京科技大学经济管理学院中国人民大学劳动人事学院北京工业大学经济管理学院山东大学山东省人才发展战略研究院

自恋的CEO在企业中比比皆是,会对员工与组织产生深远影响,而CEO谦卑特质是重要的情境因素。高管团队成员直面CEO并担负着组织内部重要的领导职责,对CEO自恋特质的感知和反应更深刻,其工作幸福感可能也更容易受到影响。基于关系认同理论... 详细信息

自恋的CEO在企业中比比皆是,会对员工与组织产生深远影响,而CEO谦卑特质是重要的情境因素。高管团队成员直面CEO并担负着组织内部重要的领导职责,对CEO自恋特质的感知和反应更深刻,其工作幸福感可能也更容易受到影响。基于关系认同理论,本文构建了一个有中介的调节效应模型,对56位CEO与319位TMT成员的配对数据进行分析,结果表明:CEO自恋对TMT成员工作幸福感产生负向影响;CEO谦卑能够弱化CEO自恋对TMT成员有关领导关系认同的消极影响;TMT成员对领导关系的认同积极影响工作幸福感,中介了CEO谦卑对CEO自恋与TMT成员工作幸福感关系的调节作用。研究拓展了领导自恋影响员工工作幸福感的研究层次与边界情境,揭示了领导关系认同在CEO谦卑弱化CEO自恋消极影响效应中的内在机制,验证了不同领导组合相对于单一领导对领导关系认同与工作幸福感的增强更具有效性,因而丰富了工作幸福感影响因素研究的主体,对CEO的遴选与培训具有潜在的指导意义。

关键词： CEO自恋 CEO谦卑工作幸福感领导关系认同

同方期刊数据库

Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale anaerobic/anoxic/aerobic municipal sewage treatment plant

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2023年第3期17卷 107-120页

作者： Hongcan cui Ronghua Xu Zhong Yu Yuanyuan yao Shaoqing Zhang Fangang meng School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510275China

Understanding the structures and dynamics of bacterial communities in activated sludge(AS)in full-scale wastewater treatment plants(WWTPs)is of both engineering and ecological *** investigations have mainly focused on the AS communities of WWTP aeration tanks,and the differences and interactions between the communities in anaerobic and anoxic tanks of the AS system remain poorly ***,we investigated the structures of bacterial communities and their inter-connections in three tanks(anaerobic,anoxic,and aerobic)and influent from a full-scale WWTP with conventional anaerobic/anoxic/aerobic(A/A/O)process over a year to explore their functionality and network ***-throughput sequencing showed that community compositions did not differ appreciably between the different tanks,likely due to the continuous sludge community interchange between ***,network analysis showed significant differences in inter-species relationships,OTU topological roles,and keystone populations in the different AS ***,the anoxic network is expected to be more unstable and easily affected by environmental ***-associated environmental factors,including dissolved oxygen,pH,and nutrients,were found to affect the relative abundance of functional genera(i.e.,AOB,NOB,PAOs,and denitrifiers),suggesting that these groups were more susceptible to environmental variables than other ***,this work could assist in improving our understanding of tank-associated microbial ecology,particularly the response of functional bacteria to seasonal variations in WWTPs employing A/A/O process.

关键词： Activated sludge Bacterial community Tank-dependence Network association Functional bacteria

Zn-doping enhances the photoluminescence and stability of PbS quantum dots for in vivo high-resolution imaging in the NIR-II window

在线全文

学校读者我要写书评

暂无评论

Nano Research 2020年第8期13卷 2239-2245页

作者： Xiulei Shi Song Chen meng-yao Luo Biao Huang Guozhen Zhang Ran cui Mingxi Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology430070WuhanChina Key Laboratory of Analytical Chemistry for Biology and Medicine(Ministry of Education) College of Chemistry and Molecular SciencesWuhan UniversityWuhan430072China iChEM(Collaborative Innovation Center of Chemistry for Energy Materials) Hefei National Laboratory for Physical Science at the MicroscaleUniversity of Science and Technology of ChinaHefei230026China

Lead sulfide(PbS)quantum dots(QDs)are important near infrared(NIR)luminescent materials with tunable and strong emission covering a broad NIR ***,their optical properties are quite sensitive to air,water,and high temperature due to the surface oxidation,thus limiting their applications in optoelectronic devices and biological ***,a cation-doping strategy is presented to make a series of high-quality Zn-doped PbS QDs with strong emission covering whole second near-infrared window(NIR-II,1,000-1,700 nm).First-principle calculations confirmed that Zn dopants formed dopant states and decreased the recombination energy gap of host ***,the Zn dopants significantly improved the quantum yield,photoluminescence lifetime and thermal stability of PbS ***,the PEGylated Zn-doped PbS QDs emitting in the NIR-llb window(1,500-1,700 nm)realized the noninvasive imaging of cerebral vascular of mouse with high resolution,being able to distinguish blood *** material not only provides a new tool for deep tissue fluorescence imaging,but is also promising for the development of other NIR related devices.

关键词： quantum dots doping second near-infrared window(NIR-II window) tunable emission in vivo imaging

Single-Particle Tracking for the Quantification of Membrane Protein Dynamics in Living Plant Cells

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

Molecular Plant 2018年第11期11卷 1315-1327页

作者： Yaning cui meng Yu Xiaomin yao Jingjing Xing Jinxing Lin Xiaojuan Li Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Beijing Forestry UniversityBeijing 100083China College of Biological Sciences &Biotechnology Beijing Forestry UniversityBeijing 100083China Institute of Plant Stress Biology State Key Laboratory of Cotton BiologyDepartment of BiologyHenan UniversityJinming StreetKaifeng 475001China

The plasma membrane is a sophisticated,organized,and highly heterogeneous structure that compartmentalizes cellular *** decipher the biological processes involving membrane proteins,it is necessary to analyze their spatiotemporal ***,it is difficult to directly assess the dynamics and interactions of biomolecules in living cells using traditional biochemical *** tracking (SPT)methods for imaging and tracking single particles conjugated with fluorescent probes offer an ideal approach to acquire valuable and complementary information about dynamic intracellular *** can be used to quantitatively monitor the diverse motions of individual particles in living *** also provides super-spatiotemporal resolution that allows early-stage or rapid response information to be obtained for a better understanding of molecular basis of associated signal transduction *** importantly,SPT can be used to detect the motion paths of individual biomolecules in vivo and in situ,thus unveiling the dynamic behavior of the biomolecules that support developmental processes in living *** this review,we give an overview of SPT methods,from image acquisition to the detection of single particles,as well as tracking and data *** also discuss recent applications of SPT methods in the field ofplant biology to reveal the complex biological functions of membrane proteins.

关键词： single-particle tracking dynamics stoichiometry dwell time colocalization

Dynamic Event-Triggered Control of Continuous-Time Systems With Random Impulses

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

IEEE/CAA Journal of Automatica Sinica 2023年第12期10卷 2292-2299页

作者： meng yao Guoliang Wei the College of Science University of Shanghai for Science and TechnologyShanghai 200093China the Business School University of Shanghai for Science and TechnologyShanghai 200093China

In this paper,the networked control problem under event-triggered schemes is considered for a class of continuoustime linear systems with random *** order to save communication costs and lighten communication burden,a dynamic event-triggered scheme whose threshold parameter is dynamically adjusted by a given evolutionary rule,is employed to manage the transmission of data ***,the evolution of the threshold parameter only depends on the sampled measurement output,and hence eliminates the influence of impulsive signals on the event-triggered ***,with the help of a stochastic analysis method and Lyapunov theory,the existence conditions of desired controller gains are received to guarantee the corresponding input-to-state stability of the addressed ***,according to the semi-definite programming property,the desired controller gains are calculated by resorting to the solution of three linear matrix *** the end,the feasibility and validity of the developed control strategy are verified by a simulation example.

关键词： mechanism. desired hence