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Multi-Scale Location Attention Model for Spatio-Temporal Prediction of Disease Incidence

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Intelligent Automation & Soft Computing 2024年第3期39卷 585-597页

作者： Youshen Jiang Tongqing Zhou Zhilin Wang zhiping cai Qiang Ni College of Computer National University of Defense TechnologyChangsha410073China Technical Service Center for Vocational Education National University of Defense TechnologyChangsha410073China School of Computing and Communications Lancaster UniversityLancasterLA14WAUK

Due to the increasingly severe challenges brought by various epidemic diseases,people urgently need intelligent outbreak trend *** disease onset is very important to assist *** of the exist-ing work fails to make full use of the temporal and spatial characteristics of epidemics,and also relies on multi-variate data for *** this paper,we propose a Multi-Scale Location Attention Graph Neural Networks(MSLAGNN)based on a large number of Centers for Disease Control and Prevention(CDC)patient electronic medical records research sequence source data *** order to understand the geography and timeliness of infec-tious diseases,speciﬁc neural networks are used to extract the geography and timeliness of infectious *** the model framework,the features of different periods are extracted by a multi-scale convolution *** the same time,the propagation effects between regions are simulated by graph convolution and attention *** compare the proposed method with the most advanced statistical methods and deep learning ***,we conduct comparative experiments on data sets with different time lengths to observe the predic-tion performance of the model in the face of different degrees of data *** conduct extensive experi-ments on real-world epidemic-related data *** method has strong prediction performance and can be readily used for epidemic prediction.

关键词： Spatio-temporal prediction infectious diseases graph neural networks

Watt-level acousto-optically Q-switched Pr:YLF laser at 639 nm

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Chinese Optics Letters 2024年第1期22卷 76-83页

作者：薛喻宸张瑞松戴征东王中玉许惠英蔡志平 Department of Electronic Engineering School of Electronic Science and Engineering(National Model Microelectronics College)Xiamen UniversityXiamen 361005China

We present a study on a watt-level acousto-optically Q-switched Pr:YLF laser at three different repetition rates(10 kHz,20 kHz,and 50 kHz)for the first time,to the best of our *** corresponding average output powers and pulse widths were measured to be 1.14 W,1.2 W,and 1.32 W,and 40 ns,52 ns,and 80 ns,respectively.A maximum pulse energy of0.11 mJ was obtained,corresponding to a peak power of up to 2.8 kW at a repetition rate of 10 *** simulated dynamics of a fast Q-switched Pr:YLF laser is in agreement with the *** laser's ability to generate stable pulses with high peak power and short pulse width makes it highly desirable for various practical applications,such as laser machining and material processing.

关键词： red pulsed laser Pr:YLF diode pump acousto-optical Q switching

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SGX隔离技术研究综述

华中科技大学学报（自然科学版） 2024年第2期52卷 1-15页

作者：崔津华蔡志平刘柯江湖南大学半导体学院(集成电路学院) 湖南长沙410082 国防科技大学计算机学院湖南长沙410073

Intel SGX(software guard eXtensions)通过创建一个可信执行环境(TEE或enclave)来保护用户使用中的数据,它可以阻止任何特权软件,例如操作系统和虚拟机管理程序等的任意访问,确保数据和代码的机密性和完整性.尽管SGX技术拥有高安全、... 详细信息

Intel SGX(software guard eXtensions)通过创建一个可信执行环境(TEE或enclave)来保护用户使用中的数据,它可以阻止任何特权软件,例如操作系统和虚拟机管理程序等的任意访问,确保数据和代码的机密性和完整性.尽管SGX技术拥有高安全、硬件级别的保护属性,但是其构建的可信执行环境在兼容性、性能和安全性等方面仍然存在关键的研究挑战.该综述首先系统地分析和总结了五个SGX自身设计约束,它们直接导致了SGX与二进制软件和运行时语言的不兼容性或可用性差问题,致使用户面临性能、安全性和兼容性无法全部兼顾的局面.然后,针对SGX兼容性/可用性挑战,全面梳理和总结了三种不同类型的解决方案,分析了它们的优缺点;针对SGX安全性问题,对当前流行的攻击技术进行了分类,描述了攻击关键要素和根本原因;针对SGX性能瓶颈,总结了制约enclave运行性能的主要因素,分析了SGX内部设计权衡.最后,总结了SGX研究的经验教训,展望了新一代enclave或TEE技术的研究趋势,指出了若干研究方向.

关键词：可信执行环境 Intel SGX 兼容性安全性性能机密计算

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基于目标生成的IPv6网络地址扫描综述

计算机研究与发展 2024年第9期61卷 2307-2320页

作者：侯冰楠刘宁李雄略周桐庆陈颖文蔡志平卢凯国防科技大学计算机学院长沙410073

随着近年IPv6网络的迅猛发展,针对IPv6的网络测量和安全分析逐步成为热门的研究课题,这其中一项最基础、最关键的工作是通过网络扫描获取大量的IPv6活跃地址.然而IPv6庞大的地址空间和稀疏的活跃主机分布使得传统的暴力扫描工具(如ZMap... 详细信息

随着近年IPv6网络的迅猛发展,针对IPv6的网络测量和安全分析逐步成为热门的研究课题,这其中一项最基础、最关键的工作是通过网络扫描获取大量的IPv6活跃地址.然而IPv6庞大的地址空间和稀疏的活跃主机分布使得传统的暴力扫描工具(如ZMap和MASSCAN等)无法直接使用.例如在万兆带宽条件下,可5 min内扫描IPv4全网的ZMap扫描器若对IPv6进行全网扫描,仍需要花费上亿年的时间.针对大规模IPv6网络扫描所面临的效率低下问题,研究人员提出了一系列针对IPv6网络的扫描方法,提升了当前IPv6网络资产发现、识别和风控的能力.对这些基于目标生成的IPv6网络扫描方法进行了分类、梳理和总结,分析了各扫描方法的优缺点及适用场景.通过实网扫描实验,对比了多种扫描策略的命中率、边际效益和时间花销等性能情况.最后给出了对IPv6网络扫描研究的思考并对未来的研究方向进行了展望.

关键词： IPv6网络网络测量网络扫描目标生成算法别名前缀检测

异色瓢虫对苹果-蛇床草微景观中两种蚜虫的捕食功能反应及选择偏好性

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植物保护学报 2024年第1期51卷 96-105页

作者：蔡志平张兴瑞肖云丽张建萍戈峰石河子大学农学院新疆绿洲农业病虫害治理与植保资源利用重点实验室石河子832000 中国科学院动物研究所农业虫害鼠害综合治理研究国家重点实验室北京100101 山东省农业技术推广中心济南250100 山东省农业科学院植物保护研究所济南250100

为评估异色瓢虫Harmonia axyridis对苹果-蛇床草微景观中2种寄主上绣线菊蚜Aphis spiraecola和胡萝卜微管蚜Semiaphis heraclei的生物防治潜能,在实验室条件下测定异色瓢虫1~4龄幼虫和雌、雄成虫对2种蚜虫3~4龄若蚜的捕食功能反应、寻... 详细信息

为评估异色瓢虫Harmonia axyridis对苹果-蛇床草微景观中2种寄主上绣线菊蚜Aphis spiraecola和胡萝卜微管蚜Semiaphis heraclei的生物防治潜能,在实验室条件下测定异色瓢虫1~4龄幼虫和雌、雄成虫对2种蚜虫3~4龄若蚜的捕食功能反应、寻找效应以及捕食偏好性。结果表明,异色瓢虫1~4龄幼虫和雌、雄成虫对绣线菊蚜和胡萝卜微管蚜的捕食功能反应均符合HollingⅡ型功能反应类型,其中,雌成虫对绣线菊蚜的捕食能力最强,为411.284,雄成虫对胡萝卜微管蚜的捕食能力最强,为356.403;2龄幼虫对绣线菊蚜的瞬时攻击率最大,为1.231,3龄幼虫对胡萝卜微管蚜的瞬时攻击率最大,为1.277。异色瓢虫各虫态对绣线菊蚜和胡萝卜微管蚜的寻找效应均随着蚜虫密度的升高而降低。当2种蚜虫共存且总密度为60头/皿时,不同密度比例下异色瓢虫对2种蚜虫均无显著偏好性;当总密度为240头/皿,绣线菊蚜与胡萝卜微管蚜的密度比例为1∶5、2∶4、3∶3和4∶2时异色瓢虫对绣线菊蚜表现出显著的偏好性,而在密度比例为1∶5、3∶3和4∶2时异色瓢虫对胡萝卜微管蚜表现出显著的负偏好性。表明异色瓢虫对苹果-蛇床草微景观中绣线菊蚜的防控潜能更好。

关键词：异色瓢虫绣线菊蚜胡萝卜微管蚜功能反应选择偏好苹果蛇床草

High performance visible generation of Ho^(3+)-doped all-fiber lasers

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Photonics Research 2023年第12期11卷 2121-2127页

作者： SHUAIHAO JI XUEXIAN LIN BO XIAO ZHONGYU WANG XIUJI LIN zhiping cai Department of Electronic Engineering School of Electronic Science and Engineering(National Model Microelectronics College)XiamenUniversityXiamen 361005China

Direct generation of visible frequency from a compact all-fiber laser while preserving high output characteristics has been a subject of research in laser *** investigated the high output performance of all-fiber lasers based on Ho^(3+)-doped ZBLAN fluoride glass fiber especially operating in the deep-red band by pumping at 640 ***,we achieved a maximum continuous-wave output power of 271 m W at 750 nm with a slope efficiency of 45.1%,which represents,to our knowledge,the highest direct output power recorded in an all-fiber laser with a core diameter of less than 10μm in the deep-red ***,we successfully developed a 1.2μm all-fiber laser pumped by a 640 nm *** extensively investigated the correlation between these two-laser generation processes and their performances at 750 nm and 1.2μm *** increasing the pumping rate,we observed an efficient recycling of population through a highly excited state absorption process,which effectively returned the population to the upper laser level of the deep-red ***,we determined the optimized conditions for such lasers,identified the processes responsible for populating the excited state energy levels,and established the corresponding spectroscopic parameters.

关键词： fiber pumping lasers

Ensuring User Privacy and Model Security via Machine Unlearning: A Review

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Computers, Materials & Continua 2023年第11期77卷 2645-2656页

作者： Yonghao Tang zhiping cai Qiang Liu Tongqing Zhou Qiang Ni College of Computer National University of Defense TechnologyChangsha410073China School of Computing and Communications Lancaster UniversityEnglandB23UK

As an emerging discipline,machine learning has been widely used in artificial intelligence,education,meteorology and other *** the training of machine learning models,trainers need to use a large amount of practical data,which inevitably involves user ***,by polluting the training data,a malicious adversary can poison the model,thus compromising model *** data provider hopes that the model trainer can prove to them the confidentiality of the *** will be required to withdraw data when the trust *** the meantime,trainers hope to forget the injected data to regain security when finding crafted poisoned data after the model ***,we focus on forgetting systems,the process of which we call machine unlearning,capable of forgetting specific data entirely and *** this paper,we present the first comprehensive survey of this *** summarize and categorize existing machine unlearning methods based on their characteristics and analyze the relation between machine unlearning and relevant fields(e.g.,inference attacks and data poisoning attacks).Finally,we briefly conclude the existing research directions.

关键词： Machine learning machine unlearning privacy protection trusted data deletion

放射治疗对宫颈癌DNA甲基转移酶表达的影响

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包头医学院学报 2024年第1期40卷 8-12,20页

作者：徐晗高扬白静蔡志平邵国内蒙古科技大学包头医学院基础医学与法医学院内蒙古包头014040 内蒙古科技大学包头医学院内蒙古低氧适应转化医学重点实验室包头医学院二附院呼吸科包头市肿瘤医院放射治疗科深圳市龙岗区第三人民医院转化医学中心

目的:研究放射治疗对宫颈癌(cervical cancer,CIN)组织中DNA甲基转移酶(DNA methyltransferase,DNMT)1、3A和3B表达的影响,探讨其在放射治疗耐受中的作用。方法:选用12例宫颈癌患者放射治疗前、中、后三个时期的组织,应用qPCR检测宫颈... 详细信息

目的:研究放射治疗对宫颈癌(cervical cancer,CIN)组织中DNA甲基转移酶(DNA methyltransferase,DNMT)1、3A和3B表达的影响,探讨其在放射治疗耐受中的作用。方法:选用12例宫颈癌患者放射治疗前、中、后三个时期的组织,应用qPCR检测宫颈癌组织在放射治疗前期、中期和后期的DNMT1、DNMT3A和DNMT3B mRNA的表达变化。结果:宫颈癌放射治疗前、中、后三个时期DNMT1对β-actin mRNA的相对表达量分别是(0.1229±0.0217)、(0.5696±0.0217)和(0.1620±0.0352);放射治疗期间和放射治疗之前宫颈癌组织中DNMT1 mRNA的表达差异有统计学意义(P0.05);DNMT3B对β-actin mRNA的相对表达量分别是(0.6627±0.0348)、(0.8104±0.0845)和(0.2391±0.0470),放射治疗期间和放射治疗之前宫颈癌组织中DNMT3B mRNA的表达差异有统计学意义(P<0.05),放射治疗期间和放射治疗之后宫颈癌组织中DNMT3B mRNA的表达差异有统计学意义(P<0.05),放射治疗之前和放射治疗之后宫颈癌组织中DNMT3B mRNA的表达差异有统计学意义(P<0.05)。结论:放射治疗使宫颈癌组织中DNMT1,DNMT3A和DNMT3B表达发生变化,其可能在放射耐受中起到了作用。

关键词：宫颈癌放射治疗 DNA甲基转移酶 DNA甲基化

Diode-pumped high-power continuous-wave intracavity frequency-doubled Pr^(3+):YLF ultraviolet lasers around 349 nm

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High Power Laser Science and Engineering 2023年第1期11卷 44-51页

作者： Xiuji Lin Zheng Zhang Shuaihao Ji Run Fang Bo Xiao Huiying Xu zhiping cai Department of Electronic Engineering Xiamen UniversityXiamenChina

High-power continuous-wave ultraviolet lasers are useful for many *** ultraviolet laser sources,the wavelength switching capability and compact structure are very important to extend the applicability and improve the flexibility in practical *** this work,we present two simple and relatively compact schemes by laser diode pumping to obtain a watt-level single-wavelength 348.7-nm laser and discrete wavelength tunable ultraviolet lasers around 349 nm(from 334.7 to 364.5 nm)by intracavity frequency doubling based on Pr^(3+):YLF andβ-BBO *** maximum output power of the single-wavelength 348.7-nm laser is 1.033 *** output powers of the discrete wavelength tunable lasers are at the level of tens of milliwatts,except for two peaks at 348.7 and 360.3 nm with output powers of approximately 500 *** addition,simulations are carried out to explain the experimental results and clarify the tuning mechanisms.

关键词： high-power ultraviolet laser Pr^(3+):YLF tunable ultraviolet laser