检索结果-南通市图书馆

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

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

Securing Display Path for Security-Sensitive Applications on Mobile Devices

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2018年第4期55卷 17-35页

作者： Jinhua Cui Yuanyuan Zhang zhiping cai Anfeng Liu Yangyang Li College of Computer National University of Defense TechnologyChangsha 410073China SMU Labs Singapore Management UniversitySingapore 178895Singapore College of Mathematics and Informatics Fujian Normal UniversityFuzhou 350117China School of Information Science and Engineering Central South UniversityChangsha 410083China Innovation Center China Academy of Electronics and Information TechnologyBeijing 100041China

While smart devices based on ARM processor bring us a lot of convenience,they also become an attractive target of *** threat is exaggerated as commodity OSes usually have a large code base and suffer from various software ***,adversaries prefer to steal sensitive data by leaking the content of display output by a security-sensitive application.A promising solution is to exploit the hardware visualization extensions provided by modern ARM processors to construct a secure display path between the applications and the display *** this work,we present a scheme named SecDisplay for trusted display service,it protects sensitive data displayed from being stolen or tampered surreptitiously by a compromised *** TCB of SecDisplay mainly consists of a tiny hypervisor and a super light-weight rendering painter,and has only^1400 lines of *** implemented a prototype of SecDisplay and evaluated its performance *** results show that SecDisplay only incurs an average drop of 3.4%.

关键词： Mobile device secure display virtualization trusted computing base display path trust anchor

放射治疗对宫颈癌DNA甲基转移酶表达的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Analyzing the Structure and Connectivity ofContinent-Level Internet Topology

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2019年第6期59卷 955-964页

作者： Xionglve Li Junhua Xi zhiping cai Tao Yang Chak Fong Cheang National University of Defense Technology College of ComputerChangsha410073China Macao University of Science and Technology 999078Macao

The research and analysis of Internet topology is hot in the field of networkmeasurement, which have important applications in network security, traffic schedulingand many other fields. Most of the existing works are focused on the AS-level and routerleveltopology, but few works are about the IP-level topology. In fact, obtaining thetopology of each continent and knowing how the topologies of the continents areconnected to each other can help us understanding the Internet around the world morethoroughly. In this paper, we obtained data sets from RIPE, constructed and analyzednetwork topologies of all the continents. By analyzing the topological connectionsbetween continents, we found out that most of the junctions of inter-continent traces arelocated in a few countries.

关键词： Topology IP-level connectivity continent

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

椎动脉优势临床意义及研究进展

中风与神经疾病杂志 2024年第4期41卷 377-380页

作者：付娇刘利峰(综述) 蔡志平姜波(审校) 巴彦淖尔市医院神经内科内蒙古巴彦淖尔015000 内蒙古科技大学包头医学院研究生院内蒙古包头014040

椎动脉优势发生率高,在正常人群、脑血管病人群均可见,为了探讨椎动脉优势与疾病发生的关系我们对椎动脉优势及与其相关疾病进行综述。通过知网、万方、生物科技、PubMed等检索“椎动脉优势”及相关文章,对其特点进行总结。椎动脉优势... 详细信息

椎动脉优势发生率高,在正常人群、脑血管病人群均可见,为了探讨椎动脉优势与疾病发生的关系我们对椎动脉优势及与其相关疾病进行综述。通过知网、万方、生物科技、PubMed等检索“椎动脉优势”及相关文章,对其特点进行总结。椎动脉优势发生率高,尤其与基底动脉弯曲、动脉硬化狭窄、后循环缺血性疾病以及围椎基底动脉手术等存在一定相关性。椎动脉优势的评估具有重要临床价值,明确其发生原因及变化规律,对临床疾病预防、治疗意义重大。

关键词：椎动脉优势椎动脉发育不良椎动脉延长扩张症基底动脉弯曲

Leveraging Active Decremental TTL Measuring for Flexible and Efficient NAT Identification

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第3期70卷 5179-5198页

作者： Tao Yang Chengyu Wang Tongqing Zhou zhiping cai Kui Wu Bingnan Hou National University of Defense Technology Changsha410073China Department of Computer Science University of VictoriaCanada

Malicious attacks can be launched by misusing the network address translation technique as a *** mitigate such threats,network address translation identification is investigated to identify network address translation devices and detect abnormal ***,existingmethods in this field are mainly developed for relatively small-scale networks and work in an offline manner,which cannot adapt to the real-time inference requirements in high-speed network *** this paper,we propose a flexible and efficient network address translation identification scheme based on actively measuring the distance of a round trip to a target with decremental time-tolive *** basic intuition is that the incoming and outgoing traffic froma network address translation device usually experiences the different number of hops,which can be discovered by probing with dedicated time-to-live *** explore a joint effort of parallel transmission,stateless probes,and flexible measuring reuse to accommodate the efficiency of the measuring *** further accelerate statistical countingwith a new sublinear space data structure *** implement a prototype and conduct real-world deployments with 1000 volunteers in 31 Chinese provinces,which is believed to bring insight for ground truth collection in this *** onmulti-sources datasets show that our proposal can achieve as high precision and recall as 95%with a traffic handling throughput of over 106 pps.

关键词： Network address translation NAT security NAT identification active measurement

不同功能植物对棉花蚜虫及其捕食性天敌的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

植物保护学报 2024年第1期51卷 39-49页

作者：彭雪凡周晓通维尼热·买合木提上官一磊戈峰张建萍蔡志平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 山东省农业科学院植物保护研究所济南250100

为明确功能植物对棉花蚜虫及其捕食性天敌的调控作用,通过田间系统调查和室内选择行为反应试验测定4种功能植物对棉花蚜虫及其捕食性天敌种群动态的影响。结果显示,4种功能植物均可涵养多异瓢虫Hippodamia variegata、中华通草蛉Chrysop... 详细信息

为明确功能植物对棉花蚜虫及其捕食性天敌的调控作用,通过田间系统调查和室内选择行为反应试验测定4种功能植物对棉花蚜虫及其捕食性天敌种群动态的影响。结果显示,4种功能植物均可涵养多异瓢虫Hippodamia variegata、中华通草蛉Chrysoperla sinica和东亚小花蝽Orius sauteri等捕食性天敌,其中蛇床草Cnidium monnieri上的捕食性天敌总数最多,达821头。蛇床草种植区棉花上多异瓢虫和中华通草蛉的种群数量均显著高于对照区棉花,而棉蚜Aphis gossypii、棉长管蚜Acyrthosiphon gossypii和棉黑蚜***的种群数量均显著低于对照区棉花;油菜Brassica napus种植区棉花上的中华通草蛉种群数量显著高于对照区棉花,棉长管蚜种群数量则显著低于对照区棉花;薄荷Mentha haplocalyx种植区棉花上的多异瓢虫和中华通草蛉种群数量均显著高于对照区棉花,棉蚜和棉长管蚜种群数量均显著低于对照区棉花;罗勒Ocimum basilicum种植区棉花上的棉长管蚜和棉黑蚜种群数量均显著低于对照区棉花。此外,棉蚜和棉长管蚜种群数量与捕食性天敌总数之间呈显著负相关;蛇床草和罗勒植株的挥发物显著吸引多异瓢虫和中华通草蛉,罗勒和薄荷植株的挥发物显著驱避有翅棉蚜。表明功能植物蛇床草、油菜、薄荷和罗勒可为棉田涵养捕食性天敌,而薄荷和罗勒还能驱避棉花蚜虫,可用于棉田害虫及天敌的生态调控。

关键词：功能植物棉花蚜虫捕食性天敌选择反应蛇床草油菜薄荷罗勒

An Alias Resolution Method Based on Delay Sequence Analysis

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2020年第6期63卷 1433-1443页

作者： Yang Tao Gang Hu Bingnan Hou zhiping cai Jing Xia Cheang Chak Fong College of Computer National University of Defense TechnologyChangsha410073China Macao University of Science and Technology 999078Macao

Alias resolution,mapping IP addresses to routers,is a critical step in obtaining a network *** latest work on alias resolution is based on special fields in the packet,such as IP ID,port number,***,for security reasons,most network devices block packets for setting options,and some related fields exist only in IPv4,so these methods cannot be used for alias resolution of *** order to solve the above problems,we propose an alias analysis method based on delay sequence *** this article,we present a new model to describe the distribution of Internet delays and give a mathematical *** experimental measurements using the Macroscopic Internet Topology Data Kit(ITDK)and Ark IPv6 Topology Dataset,it was found that the statistical differences in most alias delay models were very *** statistical differences in the non-alias delay models are spread over a wide *** the wavelet decomposition in delay sequence,it was found that the approximate components and the detail components of the delay sequence of aliases were the same after filtering out the noise,which provided a theoretical explanation for the experimental *** technology is applicable to both IPv4 and IPv6.

关键词： Alias resolution IPv6 Internet topology measurement methodology

Using Imbalanced Triangle Synthetic Data for Machine Learning Anomaly Detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2019年第1期58卷 15-26页

作者： Menghua Luo Ke Wang zhiping cai Anfeng Liu Yangyang Li Chak Fong Cheang College of Computer National University of Defense TechnologyChangsha410073China Normal College of Jishou University Jishou416000China School of Information Science and Engineering Central South UniversityChangsha410083China Innovation Center China Academy of Electronics and Information TechnologyBeijing100041China Faculty of Information Technology Macao University of Science and Technology519020Macao

The extreme imbalanced data problem is the core issue in anomaly *** amount of abnormal data is so small that we cannot get adequate information to analyze *** mainstream methods focus on taking fully advantages of the normal data,of which the discrimination method is that the data not belonging to normal data distribution is the *** the view of data science,we concentrate on the abnormal data and generate artificial abnormal samples by machine learning *** this kind of technologies,Synthetic Minority Over-sampling Technique and its improved algorithms are representative milestones,which generate synthetic examples randomly in selected line *** our work,we break the limitation of line segment and propose an Imbalanced Triangle Synthetic Data *** theory,our method covers a wider *** experiment with real world data,our method performs better than the SMOTE and its meliorations.

关键词： Anomaly detection imbalanced data synthetic data machine learning