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Jointly beam stealing attackers detection and localization without training:an image processing viewpoint

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Frontiers of Computer Science 2023年第3期17卷 145-160页

作者： yaoqi yang Xianglin WEI Renhui XU Weizheng WANG Laixian PENG yangang WANG College of Communication Engineer Army Engineering University of PLANanjing 210000China The 63rd Research Institute National University of Defense TechnologyNanjing 210007China Department of Computer Science City University of Hong KongHong Kong 999077China

Recently revealed beam stealing attacks could greatly threaten the security and privacy of IEEE 802.11ad *** premise to restore normal network service is detecting and locating beam stealing attackers without their *** consistency-based methods are only valid for one single attacker and are *** the viewpoint of image processing,this paper proposes an algorithm to jointly detect and locate multiple beam stealing attackers based on RSSI(Received Signal Strength Indicator)map without the training process involved in deep learning-based ***,an RSSI map is constructed based on interpolating the raw RSSI data for enabling high-resolution localization while reducing monitoring ***,three image processing steps,including edge detection and segmentation,are conducted on the constructed RSSI map to detect and locate multiple attackers without any prior knowledge about the *** evaluate our proposal’s performance,a series of experiments are conducted based on the collected *** results have shown that in typical parameter settings,our algorithm’s positioning error does not exceed 0.41 m with a detection rate no less than 91%.

关键词： beam-stealing attacks detection localization image processing

Comparison of simple discectomy and instrumented posterior lumbar interbody fusion for treatment of lumbar disc herniation combined with Modic endplate changes

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Chinese Medical Journal 2014年第15期127卷 2789-2794页

作者： Cao Peng Chen Zhe Zheng Yuehuan Wang Yuren Jiang Leisheng yang yaoqi Zhuang Chengyu Liang Yu Zheng Tao Gong Yaocheng Zhang Xingkai Wu Wenjian Qiu Shijing Department of Orthopaedics Ruijin Hospital School of Medicine Jiao Tong University and Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases with Integrated Chinese- Western Medicine Shanghai Institute of Traumatology and Orthopaedics Shanghai 200025 China Shanghai Institute of Traumatology and Orthopaedics Shanghai200025 China Department of Orthopaedics Xinhua Hospital School of MedicineJiao Tong University Shanghai 200092 China

Background The purpose of this retrospective study was to compare the surgical outcomes of simple discectomy and instrumented posterior lumbar interbody fusion （iPLIF） in patients with lumbar disc herniation and Modic endplate *** hypothesis was that iPLIF could provide better outcome for patients with refractory lumbar disc herniation and Modic changes （LDH-MC）.Methods Ninety-one patients with single-segment LDH-MC were *** patients experienced low back pain as well as radicular leg pain,and low back pain was more severe than leg ***-seven patients were treated with discectomy and 44 were treated with iPLIE The outcomes of both low back pain and radicular leg pain using visual analogue scale （VAS） as well as the clinical outcome related to low back pain using Japanese Orthopaedic Association （JOA） score were assessed before and 18 months after surgery,*** Both low back and leg pain were significantly improved 18 months after simple discectomy and iPLIE Compared to patients undergoing simple discectomy,low back pain was significantly reduced in patients undergoing iPLIE but there was no significant difference in leg pain between two *** fusion was achieved in all patients who underwent *** In patients with LDH-MC,iPLIF can yield significantly superior outcome on the relief of low back pain compared to simple *** discectomy can relieve radicular leg pain as efficient as iPLIE Accordingly,iPLIF seems to be a reliable treatment for patients with LDH-MC and predominant low back pain.

关键词： lumbar disc herniation modic changes discectomy, instrumented posterior lumbar interbody fusion low back pain

MARS and RNAcmap3:The Master Database of All Possible RNA Sequences Integrated with RNAcmap for RNA Homology Search

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Genomics, Proteomics & Bioinformatics 2024年第1期22卷 143-150页

作者： Ke Chen Thomas Litfin Jaswinder Singh Jian Zhan yaoqi Zhou Institute of Systems and Physical Biology Shenzhen Bay LaboratoryShenzhen 518055China Peking University Shenzhen Graduate School Shenzhen 518055China University of Science and Technology of China Hefei 230026China Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China Institute for Glycomics Griffith UniversitySouthportQLD 4222Australia

sequences found in the huge,integrated database of protein sequences(Big Fantastic Database).In contrast,the existing nucleotide databases were not consolidated to facilitate wider and deeper homology ***,we built a comprehensive database by incorporating the non-coding RNA(ncRNA)sequences from RNAcentral,the transcriptome assembly and metagenome assembly from metagenomics RAST(MG-RAST),the genomic sequences from Genome Warehouse(GWH),and the genomic sequences from MGnify,in addition to the nucleotide(nt)database and its subsets in National Center of Biotechnology Information(NCBI).The resulting Master database of All possible RNA sequences(MARS)is 20-fold larger than NCBI’s nt database or 60-fold larger than *** new dataset along with a new split-search strategy allows a substantial improvement in homology search over existing state-of-the-art *** also yields more accurate and more sensitive multiple sequence alignments(MSAs)than manually curated MSAs from Rfam for the majority of structured RNAs mapped to *** results indicate that MARS coupled with the fully automatic homology search tool RNAcmap will be useful for improved structural and functional inference of ncRNAs and RNA language models based on *** is accessible at https://***/omix/release/OMIX003037,and RNAcmap3 is accessible at http://***/download/.

关键词： RNA sequence database Homology search Secondary structure MARS RNAcmap3

A Parallel Discrete Event Simulation Engine for the Low-Earth-Orbit Satellite Constellation Networks

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China Communications 2024年第8期21卷 264-275页

作者： Su Hailong Liu yaoqi Zhou Yiqing Shi Jinglin Li Hongguang Qian Manli Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Lab of Processors Institute of Computing TechnologyCASBeijing 100190China Zhongke Nanjing Mobile Communication&Computing Innovation Institute Nanjing 211135China Beijing Sylincom Technology Co. Beijing 100190China

Low-Earth-Orbit satellite constellation networks(LEO-SCN)can provide low-cost,largescale,flexible coverage wireless communication *** dynamics and large topological sizes characterize *** development and application testing of LEO-SCN are challenging to carry out in a natural *** platforms are a more effective means of technology *** available simulators have a single function and limited simulation *** needs to be a simulator for full-featured *** this paper,we apply the parallel discrete-event simulation technique to the simulation of LEO-SCN to support large-scale complex system simulation at the packet *** solve the problem that single-process programs cannot cope with complex simulations containing numerous entities,we propose a parallel mechanism and algorithms LP-NM and LP-YAWNS for *** the experiment,we use ns-3 to verify the acceleration ratio and efficiency of the above *** results show that our proposed mechanism can provide parallel simulation engine support for the LEO-SCN.

关键词： constellation low earth orbit satellite ns-3 null-message parallel discrete-event simulation

群智感知系统中面向高斯差分隐私的数据新鲜度性能分析

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无线电工程 2024年第3期54卷 526-534页

作者：杨曜旗张邦宁郭道省徐任晖陆军工程大学通信工程学院江苏南京210001

群智感知是基于众包思想,利用智能感知终端完成传感数据收集的一种数据获取模式,具有部署成本低、实现方式灵活、可扩展性强等优点。随着6G网络技术的日渐成熟,针对基于6G的群智感知系统中亟需解决的传感数据时效性与隐私安全问题,提出... 详细信息

群智感知是基于众包思想,利用智能感知终端完成传感数据收集的一种数据获取模式,具有部署成本低、实现方式灵活、可扩展性强等优点。随着6G网络技术的日渐成熟,针对基于6G的群智感知系统中亟需解决的传感数据时效性与隐私安全问题,提出了一种基于高斯差分隐私的传感数据内容保护模型,利用信息年龄(Age of Information, AoI)指标对传感数据的新鲜度进行时效性分析,得到了不同队列模型、服务准则以及传输缓存的数据新鲜度性能表达式,突破了传感数据时效性分析与隐私安全提升研究相互独立的现状,为面向隐私保护的群智感知系统时效性性能评估及优化提供理论支撑。通过不同环境参数设置下的仿真实验,所提方案的正确性与有效性得到了验证。结果表明,在典型参数设置下,高斯机制的差分隐私保护效果与传感数据新鲜度性能呈负相关,即高时效性的传感数据隐私安全风险较高,反之亦然。

关键词：群智感知高斯差分隐私数据新鲜度信息年龄性能分析

Half-precessional cycle revealed by environment magnetism of stalagmite in Shizhu Cave from southwestern China during the Last Glacial

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Journal of Earth Science 2024年

作者： Huihui yang Yu-Min Chou Xiuyang Jiang Wenyue Xia Hai Li Yi Zhong Jingyu Zhang yaoqi He Tsai-Luen Yu Qingsong Liu Chuan-Chou Shen College of Tourism and Air Service， Guizhou Minzu University Research Center for Future Earth， Taiwan University Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) School of Environment， Harbin Institute of Technology High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC)， Department of Geosciences， Taiwan University Key Laboratory of Humid Subtropical Eco-Geographical Processes， College of Geography Science， Fujian Normal University Center for Marine Magnetism (CM2)， Department of Ocean Science and Engineering， Southern University of Science and Technology

The environmental magnetic proxies of stalagmites hold significant potential for reconstructing regional hydroclimate changes by revealing the content and grain size of magnetic particles within stalagmites. In this study， we present the contents and grain sizes of magnetic particles within a stalagmite SZ-1， from Shizhu Cave in southwestern China from 70.4 to 22.3 thousand years ago (ka) during the last glacial period. Specifically， the parameters IRMsoft， soil-derived magnetic minerals， and ARM/SIRM (anhysteretic remanent magnetization/saturation isothermal remanent magnetization)， the ratio of fine magnetic particles to total ferrimagnetic particles preserved in stalagmite SZ-1， indicate the fluctuation of regional precipitation. Obvious half-precessional cycles are evident in these two proxies， indicating that hydroclimatic variations in southwestern China may predominantly arise from the heat and moisture transported from tropical oceans. These variations are likely influenced by shifts in the Intertropical Convergence Zone and fluctuations in the Asian summer monsoon.

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采煤塌陷积水耕地信息提取方法研究——以山东省济宁市为例

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金属矿山 2013年第9期42卷 152-157页

作者：杨光华胡振琪杨耀淇中国矿业大学(北京)土地复垦与生态重建研究所

济宁市煤炭开采导致耕地塌陷深度大、积水严重,在全国都具有典型性和代表性。采用高分辨率遥感影像(RS)获取信息和地理信息系统(GIS)空间分析相结合的方法,在土地利用现状图、矿井分布图、行政区划图和采煤塌陷地调查统计资料等相关数... 详细信息

济宁市煤炭开采导致耕地塌陷深度大、积水严重,在全国都具有典型性和代表性。采用高分辨率遥感影像(RS)获取信息和地理信息系统(GIS)空间分析相结合的方法,在土地利用现状图、矿井分布图、行政区划图和采煤塌陷地调查统计资料等相关数据的支持下,以人机交互式解译方式对济宁市煤炭开采以来至2009年采煤塌陷导致的积水耕地信息进行了提取。得出:济宁市采煤塌陷导致耕地常年积水面积为4 780.49 hm2,占济宁市耕地总面积的0.78%,治理后和未治理塌陷积水耕地分别占积水面积的57.84%和42.16%;塌陷积水耕地主要分布于济宁市中部的"金三角"地带(曲阜市、兖州市、邹城市结合处)、任城区南部和微山县中部地区,且呈不规则分布状态,多是一矿一片或一矿多片。研究结果表明,将高分辨率遥感图像应用于塌陷积水耕地信息的提取是一种快速高效的方法,为地方政府加强塌陷积水耕地的实时准确监测提供了科学依据。

关键词： RS GIS 采煤塌陷积水耕地信息提取

Vibration properties of Paulownia wood for Ruan sound quality using machine learning methods

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JOURNAL OF FORESTRY RESEARCH 2024年第1期35卷 1-7页

作者： yang, yang Harbin Univ Coll Art & Design Harbin 150076 Peoples R China Northeast Forestry Univ Coll Mech & Elect Engn Harbin 150040 Peoples R China

As an important material for manufacturing resonant components of musical instruments, Paulownia has an important influence on the sound quality of Ruan. In this paper, a model for evaluating the sound quality of Ruan based on the vibration characteristics of wood is developed using machine learning methods. Generally, the selection of materials for Ruan manufacturing relies primarily on manually weighing, observing, striking, and listening by the instrument technician. Deficiencies in scientific theory have hindered the quality of the finished Ruan. In this study, nine Ruans were manufactured, and a prediction model of Ruan sound quality was proposed based on the raw material information of Ruans. Out of a total of 180 data sets, 145 and 45 sets were chosen for training and validation, respectively. In this paper, typical correlation analysis was used to determine the correlation between two single indicators in two adjacent pairwise combinations of the measured objects in each stage of the production process in Ruan. The vibration characteristics of the wood were tested, and a model for predicting the evaluation of Ruan's acoustic qualities was developed by measuring the vibration characteristics of the resonating plate material. The acoustic quality of the Ruan sound board wood was evaluated and predicted using machine learning model generalized regression neural network. The results show that the prediction of Ruan sound quality can be achieved using Matlab simulation based on the vibration characteristics of the soundboard wood. When the model-predicted values were compared with the traditional predicted results, it was found that the generalized regression neural network had good performance, achieving an accuracy of 93.8% which was highly consistent with the experimental results. It was concluded that the model can accurately predict the acoustic quality of the Ruan based on the vibration performance of the soundboards.

关键词： Sound quality Wood vibration performance Paulownia wood Machine learning methods YOUNGS MODULUS INTERNAL-FRICTION PREDICTION

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高潜水位煤矿区生态风险识别与评价

生态学报 2016年第17期36卷 5611-5619页

作者：肖武李素萃王铮杨耀淇王涛中国矿业大学(北京) 煤炭资源与安全开采国家重点实验室北京100083 中国矿业大学(北京) 土地复垦与生态重建研究所北京100083 北京大学经济学院北京100083

生态风险评价是生态环境保护与管理的重要研究内容,并广泛运用于流域与较大范围的区域尺度的研究。以区域生态风险评价理论为基础,结合高潜水位煤矿区生态环境以及煤炭开采对生态系统造成的危害的特点,通过分析风险源、风险受体、生态... 详细信息

生态风险评价是生态环境保护与管理的重要研究内容,并广泛运用于流域与较大范围的区域尺度的研究。以区域生态风险评价理论为基础,结合高潜水位煤矿区生态环境以及煤炭开采对生态系统造成的危害的特点,通过分析风险源、风险受体、生态终点以及暴露—响应过程,对高潜水位煤矿区生态风险的识别与评价方法进行了研究,构建了典型高潜水位煤矿区的生态风险识别与评价概念模型与空间分析框架,分析了煤矿区生态风险识别的主要技术手段与方法,并构建了以缓冲为主要手段的综合生态风险评价方法。选择山东东滩煤矿作为研究对象,针对研究区内存在的采煤塌陷、洪涝、污染、景观及社会等生态风险类型,定量评价其空间差异,并提出相应的风险防范措施。案例分析结果表明,研究区综合生态风险重度、中度、一般、轻度分别占到研究区的4.70%,64.00%,24.09%,7.20%。生态风险较高的区域主要位于矿区中西部,为煤矸石山、裸露煤炭堆积与发电厂分布区域;中度风险是研究区主要的风险类型。从降低生态风险保障矿区生态安全角度,在未来矿区规划与生态治理过程中,提出了具体的应对措施,包括:(1)注重源头控制;(2)建立高生态风险区域阻隔带;(3)加强污染的监测与控制;(4)采用边开采边治理技术。建议加强生态风险高区域的阻隔,建立生态缓冲带,减缓对整个矿区的综合影响,构建东滩煤矿生态风险防范的空间结构。

关键词：生态风险高潜水位煤矿区风险识别风险防范 Landsat-8