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China CDC weekly 2024年第4期6卷 61-63页

作者： Hongbing shen Director-General of China CDC Academician of the Chinese Academy of EngineeringBeijingChina

The Chinese government has always attached great importance to disease control and prevention ***,the general office of China’s State Council issued the“Guidelines for High-Quality Development of Disease Prevention and Control”(hereinafter referred to as the“Guidelines”)(1).The Guidelines focus on promoting high-quality development of disease control and prevention and the strategic goal of“Healthy China,”providing specific implementation pathways for the development of national disease control and prevention in the new era,including overall planning,restructuring of governance,enhancing core capabilities,strengthening talent development,and improving organizational support.

关键词： prevention attached Quality

Task-specific Part Discovery for Fine-grained Few-shot Classification

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Machine Intelligence Research 2024年第5期21卷 954-965页

作者： Yongxian Wei Xiu-shen Wei School of Computer Science and Technology Nanjing University of Science and TechnologyNanjing210094China

Localizing discriminative object parts(e.g.,bird head)is crucial for fine-grained classification tasks,especially for the more challenging fine-grained few-shot *** work always relies on the learned object parts in a unified manner,where they attend the same object parts(even with common attention weights)for different few-shot episodic *** this paper,we propose that it should adaptively capture the task-specific object parts that require attention for each few-shot task,since the parts that can distinguish different tasks are naturally *** for a few-shot task,after obtaining part-level deep features,we learn a task-specific part-based dictionary for both aligning and reweighting part features in an ***,part-level categorical prototypes are generated based on the part features of support data,which are later employed by calculating distances to classify query data for *** retain the discriminative ability of the part-level representations(i.e.,part features and part prototypes),we design an optimal transport solution that also utilizes query data in a transductive way to optimize the aforementioned distance calculation for the final *** experiments on five fine-grained benchmarks show the superiority of our method,especially for the 1-shot setting,gaining 0.12%,8.56%and 5.87%improvements over state-of-the-art methods on CUB,Stanford Dogs,and Stanford Cars,respectively.

关键词： Fine-grained image recognition few-shot learning transductive learning visual dictionary part feature discovery

Research on a Monte Carlo global variance reduction method based on an automatic importance sampling method

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Nuclear Science and Techniques 2024年第5期35卷 200-215页

作者： Yi-sheng Hao Zhen Wu shen-shen Gao Rui Qiu Hui Zhang Jun-Li Li Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Particle and Radiation Imaging of Ministry of Education Beijing 100084China Nuctech Company Limited Beijing 100084China

Global variance reduction is a bottleneck in Monte Carlo shielding *** global variance reduction problem requires that the statistical error of the entire space is *** study proposed a grid-AIS method for the global variance reduction problem based on the AIS method,which was implemented in the Monte Carlo program *** proposed method was validated using the VENUS-Ⅲ international benchmark problem and a self-shielding calculation *** results from the VENUS-Ⅲ benchmark problem showed that the grid-AIS method achieved a significant reduction in the variance of the statistical errors of the MESH grids,decreasing from 1.08×10^(-2) to 3.84×10^(-3),representing a 64.00% *** demonstrates that the grid-AIS method is effective in addressing global *** results of the selfshielding calculation demonstrate that the grid-AIS method produced accurate computational ***,the grid-AIS method exhibited a computational efficiency approximately one order of magnitude higher than that of the AIS method and approximately two orders of magnitude higher than that of the conventional Monte Carlo method.

关键词： Monte Carlo Global variance reduction Reactor shielding Automatic importance sampling

Wireless multisite sensing systems for continuous physiological monitoring

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Science China Materials 2024年第6期67卷 2045-2047页

作者： Ruilai Wei Qilin Hua Guozhen shen School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081China Institute of Flexible Electronics Beijing Institute of TechnologyBeijing 102488China

Respiratory diseases rank as the third leading cause of adult mortality[1],while cardiopulmonary and gastrointestinal issues are the primary cause of death within the first five years of a child’s life[2].The monitoring of cardiac,respiratory,and gastrointestinal sounds plays a vital role in routine care,as alterations or absence of these body sounds can serve as indicators of underlying diseases.

关键词： routine continuous monitoring

Real-time monitoring of oxygenation in deep brain tissue using a wireless photoelectric probe

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Science China Materials 2024年第4期67卷 1361-1362页

作者： Hao Pang Qilin Hua Guozhen shen School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100084China Institute of Flexible Electronics Beijing Institute of TechnologyBeijing 102488China

Oxygen(O2) supply to the brain is of utmost importance for human health, as cerebral hypoxia can result in irreversible brain damage. Neurodegenerative diseases, such as epilepsy, are closely associated with cerebral hypoxia [1,2]. Real-time monitoring of cerebral oxygenation holds significant value in neuroscience research and clinical diagnostics [3–10].

关键词： epilepsy cerebral diseases

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机械手智能物料搬运装置及其控制系统的设计

机械制造 2019年第4期57卷 24-26页

作者：沈小倩江苏联合职业技术学院无锡机电分院

设计了机械手智能物料搬运装置,介绍了其特点与功能。同时设计了这一机械手搬运装置的控制系统,介绍了控制系统的软硬件设计,可以使机械手实现对物料进行分色搬运。这一机械手搬运装置成本低,操作简单,实用性强。

关键词：机械手物料搬运控制系统设计

A Systematic Analysis of Early Life Exposure to the Chinese Famine(1959-1961)and the Health of Older Adults-China,2008-2023

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China CDC weekly 2024年第11期6卷 203-207,I0001-I0003页

作者： Chi shen Xi Chen School of Public Policy and Administration Xi’an Jiaotong UniversityXi’an CityShaanxi ProvinceChina Department of Health Policy and Management Yale School of Public HealthNew HavenCTU.S Department of Economics Yale UniversityNew HavenCTU.S

What is already known about this topic?There is mounting evidence indicating that the aging process initiates during early life stages,with in utero the individual’s environment playing a significant ***,it is crucial to comprehend the enduring effects of early life circumstances on health in old *** is added by this report?In this study,we conducted a meta-analysis to examine the effects of the Chinese Famine(1959–1961)on the health of older *** also explored potential mechanisms underlying these *** are the implications for public health practice?The complex interplay between early life circumstances,multiple health-related sectors,and healthy aging necessitates a comprehensive life-course approach and strategic interventions to enhance public health in an aging society.

关键词： life aging mount

Investigation of Ce/BEA as a passive NO_(x)adsorber:*** occurrences of cerium and adsorption behavior

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Journal of Rare Earths 2024年第7期42卷 1265-1271,I0003页

作者： Minghui Yu Yiying Ding Xiaojie Yu Siwei Yan Meiqing shen Jianqiang Wang Jun Wang Gurong shen School of Materials Science and Engineering Tianjin UniversityTianjin300350China School of Chemical Engineering and Technology Tianjin UniversityTianjin300350China National Rare Earth Catalysis Research Institute Dongying257000China

Ce/BEA has great potential as a passive NO_(x)absorber(PNA)to reduce the NO_(x)emissions during the cold start phase especially in diesel engine for its high resistance to CO and suitable NO_(x)desorption temperature ***,as a novel material,its physical and chemical properties still remain *** this work,Ce/BEA was synthesized by ion-exchange method to identify the active species in NO_(x)adsorption,compared with aggregated Ce species in Ce/SiAlO_(x) prepared by impregnation method.X-ray diffraction(XRD),high resolution-transmission electron microscopy(HR-TEM)and aberration-corrected-scanning transmission electron microscopy(AC-STEM)were performed to confirm the isolated single atom formation of Ce species in Ce/***-vis diffraction reflection spectra(DRS)and X-ray photoelectron spectroscopy(XPS)were conducted to find the difference of chemical environment between the isolated Ce species and aggregated *** performance evaluation and temperature programmed reduction of hydrogen(H_(2)-TPR)results show the high NO_(x)storage capacity and active oxygen species quantity in Ce/*** is also found that the main NO_(x)adsorption species are Ce^(4+)-O^(∗)rather than Ce^(3+).NO_(x)-diffuse reflectance infrared Fourier transform spectroscopy(NO_(x)-DRIFTS)confirms that the bidentate nitrite species are the critical NO_(x)adsorption intermediates and the conception of NO_(x)adsorption and desorption processes is proposed.

关键词： Passive NO_(x)absorber Ce/BEA Isolated Ce species Rare earths

高职“电子综合实验”课程立体化教材的建设与探索

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北京工业职业技术学院学报 2019年第1期18卷 94-96页

作者：沈小倩江苏联合职业技术学院无锡机电分院江苏无锡214028

立体化教材是教材建设机制的创新,是课程建设中的一项至关重要的教学改革内容,也是提高教学质量的一个切实有效的途径。分析"电子综合实验"课程的特点及存在的问题,阐述立体化教材建设的背景和意义,提出立体化教材的设计原则与建设内涵... 详细信息

立体化教材是教材建设机制的创新,是课程建设中的一项至关重要的教学改革内容,也是提高教学质量的一个切实有效的途径。分析"电子综合实验"课程的特点及存在的问题,阐述立体化教材建设的背景和意义,提出立体化教材的设计原则与建设内涵。依托现代信息技术手段,融入二维码技术,有效地提高了电子实验类课程的教学质量和水平。

关键词：电子实验立体化教材教学改革

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新型自适应滤波处理方法在动态称重中的应用

中国计量大学学报 2021年第2期32卷 184-188页

作者：沈小倩江苏联合职业技术学院无锡机电分院江苏无锡214028

目的:为了降低动态称重采样信号中采样序列存在的误差,需要滤除有用信号频率段内的干扰噪声。方法:提出了一种基于BP神经网络的新型自适应滤波处理方法,该方法将信号分为两路,即将低频干扰作为存储通道,称重信号作为实时通道,最后利用B... 详细信息

目的:为了降低动态称重采样信号中采样序列存在的误差,需要滤除有用信号频率段内的干扰噪声。方法:提出了一种基于BP神经网络的新型自适应滤波处理方法,该方法将信号分为两路,即将低频干扰作为存储通道,称重信号作为实时通道,最后利用BP神经网络的非线性计算实现对称重信号的自适应滤波。结果:该方法不依赖于信号和噪声的先验知识,实时性好。结论:新型自适应滤波处理方法应用在动态称重中建模简单,适应性强,从而显著提高了信噪比。

关键词：动态称重信号处理自适应噪声抵消 BP神经网络