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Smart all-time vision:The battery-free video communication for urban administration and law enforcement

Digital Communications and Networks 2023年第6期9卷 1411-1420页

作者： Yajie He Chonghui Xiao Shuai Wang yun-hao Liu Zhaoyuan Xu haoquan Zhou Min Zhao Wei Gong China University of Political Science and Law Beijing 100088China National Computer Network Emergency Response Technical Team/Coordination Center of China(CNCERT/CC) Beijing 100029China School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China University of Science and Technology of China Hefei 230026China The First Affiliated Hospital of USTC Hefei 230026China The First Affiliated Hospital of Guangxi Medical University Nanning 530005China

The Chinese government is dedicated to enhancing the level of informatization in administrative law enforcement to ensure fairness and increase ***,law enforcement has exposed such problems as insufficient force,difficulties in collecting evidence,and low evidential *** problems contradict the principles of rule of law and *** local governments have implemented advanced information technologies for urban administration and law enforcement,including big data,artificial intelligence,and *** these technologies,IoT is the core communication infrastructure for innovative law enforcement ***,traditional video communications rely on batteries or dedicated power sources,leading to maintenance challenges and high power *** this paper,we propose AT-Eye,a new video communication paradigm for all-time law enforcement video monitoring,which is battery-free and *** key enabler of AT-Eye is ambient backscatter technology,which enables energy harvesting and video communication *** previous methods,our proposal introduces a novel CCK-based modulation for tag cameras and achieves 4-way *** modulation is simple because it uses phase difference and it is energyefficient because generating square waves is ***,to ensure full compatibility with COTS WiFi,we modulate the physical service data ***,data recovery is possible using only commercial *** conduct comprehensive experiments to examine our proposal and experiment results show that AT-Eye achieves a throughput of 10.8 Mbps with COTS *** also simulate a 16-way battery-free tag camera system,demonstrating AT-Eye’s feasibility of high-definition video communication.

关键词： Video communication Backscatter communication Internet-of-Things Smart law enforcement

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BMPR-IB gene disruption causes severe limb deformities in pigs

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Zoological Research 2022年第3期43卷 391-403页

作者： Qiang Yang Chuan-Min Qiao Wei-Wei Liu hao-yun Jiang Qi-Qi Jing Ya-Ya Liao Jun Ren Yu-yun Xing State Key Laboratory of Pig Genetic Improvement and Production Technology Jiangxi Agricultural UniversityNanchangJiangxi 330045China

In an attempt to generate g.A746G substitution in the BMPR-IB gene,we unexpectedly obtained BMPR-IB homozygous knockout piglets(BMPR-IB^(-/-))and heterogeneous knockout piglets with one copy of the A746G mutation(BMPR-IB-/746G)via CRISPR/Cas9 *** chain reaction(PCR)and sequencing revealed complex genomic rearrangements in the target *** BMPR-IBdisrupted piglets showed an inability to stand and walk *** BMPR-IB^(-/-)and BMPR-IB-/746G piglets exhibited severe skeletal dysplasia characterized by distorted and truncated forearms(ulna,radius)and disordered carpal,metacarpal,and phalangeal bones in the *** piglets displayed more severe deformities in the hindlimbs by visual inspection,including fibular hemimelia,enlarged tarsal bone,and disordered toe joint *** deformities were more profound in BMPR-IB^(-/-)piglets than in the BMPR-IB-/746G *** analysis identified 139 differentially expressed proteins(DEPs)in the hindlimb fibula of BMPR-IB-/746G piglets compared to the wild-type(WT)*** DEPs are involved in skeletal or embryonic development and/or the TGF-βpathway and tumor *** Ontology(GO)and protein domain enrichment analysis suggested alterations in these *** the top 50 DEPs,a large proportion,e.g.,C1QA,MYO1H,SRSF1,P3H1,GJA1,TCOF1,RBM10,SPP2,MMP13,and PHAX,were significantly associated with skeletal *** study provides novel findings on the role of BMPR-IB in mammalian limb development.

关键词： BMPR-IB A746G Pigs Limb deformities

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Sebaceous lymphadenocarcinoma of the parotid gland:A case report

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World Journal of Clinical Cases 2020年第22期8卷 5751-5757页

作者： Feng-yun hao Yan-Li Wang Shao-Ming Li Ling-Fa Xue Department of Pathology The Affiliated Hospital of Qingdao UniversityQingdao 266555Shandong ProvinceChina Department of Operating Room The Affiliated Hospital of Qingdao UniversityQingdao 266555Shandong ProvinceChina Department of Oral and Maxillofacial Surgery The Affiliated Hospital of Qingdao UniversityQingdao 266555Shandong ProvinceChina

BACKGROUND Sebaceous lymphadenoma is a benign tumor that occurs rarely in the salivary glands,most commonly in the parotid glands or periparotid lymph nodes,and even more rarely undergoes malignant transformation into a sebaceous *** SUMMARY We report an 82-year-old woman who presented with a painless mass in the right parotid *** performed extended surgical resection of the parotid gland *** pathology revealed a sebaceous lymphadenocarcinoma with metastasis into the periparotid cervical lymph nodes,so we also performed neck dissection and lymph node *** pathology confirmed the *** literature review revealed that this was the seventh reported case of sebaceous lymphadenocarcinoma and the second reported case of cervical lymph node metastasis and infiltration of the skin of the parotid *** Treatment of sebaceous lymphadenocarcinoma depends on the typing and clinical staging of the *** resection is the first choice,and adjuvant radiotherapy should be given to patients with high-grade tumors or those at an advanced clinical stage.

关键词： Salivary glands Parotid gland Sebaceous lymphadenoma Sebaceous lymphadenocarcinoma Metastasis Case report

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Learning multi-kernel multi-view canonical correlations for image recognition

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Computational Visual Media 2016年第2期2卷 153-162页

作者： yun-hao Yuan yun Li Jianjun Liu Chao-Feng Li Xiao-Bo Shen Guoqing Zhang Quan-Sen Sun Department of Computer Science College of Information Engineering Yangzhou University Department of Computer Science Jiangnan University School of Computer Science Nanjing University of Science and Technology School of Information Technology and Electrica Engineering the University of Queensland

In this paper, we propose a multi-kernel multi-view canonical correlations(M2CCs) framework for subspace learning. In the proposed framework,the input data of each original view are mapped into multiple higher dimensional feature spaces by multiple nonlinear mappings determined by different kernels. This makes M2 CC can discover multiple kinds of useful information of each original view in the feature spaces. With the framework, we further provide a specific multi-view feature learning method based on direct summation kernel strategy and its regularized version. The experimental results in visual recognition tasks demonstrate the effectiveness and robustness of the proposed method.

关键词： image recognition canonical correlation multiple kernel learning multi-view data feature learning

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自噬在双酚A诱导小鼠睾丸支持细胞凋亡中的作用

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环境与健康杂志 2024年第7期41卷 571-578页

作者：刘暑霞柳赟昊张玲汪利芳全超武汉科技大学公共卫生学院职业危害识别与控制湖北省重点实验室湖北武汉430065 武汉市肺科医院中心实验室

目的探究自噬在双酚A(bisphenol A,BPA)诱导的小鼠睾丸支持细胞株(TM4细胞)凋亡中的作用。方法用不同浓度的BPA(0、20、40、80、160、320μmol/L)暴露TM4细胞24 h后,采用CCK-8法检测细胞活性。用不同浓度的BPA(0、25、50、100μmol/L)... 详细信息

目的探究自噬在双酚A(bisphenol A,BPA)诱导的小鼠睾丸支持细胞株(TM4细胞)凋亡中的作用。方法用不同浓度的BPA(0、20、40、80、160、320μmol/L)暴露TM4细胞24 h后,采用CCK-8法检测细胞活性。用不同浓度的BPA(0、25、50、100μmol/L)、100μmol/L BPA联合自噬诱导剂雷帕霉素(rapamycin,Rap)或抑制剂氯喹(chloroquine,CQ)暴露TM4细胞24 h后,采用MDC染色法和TUNEL染色法分别观察TM4细胞自噬和凋亡情况,采用Western blot法检测细胞内LC3-Ⅱ、Atg5、P62、Bax、Bcl-2及Cleaved Caspase-3等自噬和凋亡相关蛋白的表达情况。结果与对照组比较,不同浓度BPA暴露TM4细胞的存活率和Bcl-2蛋白的表达量均降低,而LC3-Ⅱ、Atg5、P62、Bax、Cleaved Caspase-3蛋白的表达量及Bax/Bcl-2值均升高,差异有统计学意义(P<0.05);且随着BPA暴露浓度的升高,TM4细胞的存活率和Bcl-2蛋白的表达量均呈下降趋势,而LC3-Ⅱ、Atg5、P62、Bax、Cleaved Caspase-3蛋白的表达量及Bax/Bcl-2值均呈上升趋势。与对照组比较,BPA组、BPA+CQ组及BPA+Rap组TM4细胞的Bcl-2蛋白表达量显著降低,而LC3-Ⅱ、P62、Bax、Cleaved Caspase-3蛋白表达量及Bax/Bcl-2值显著升高,同时TM4细胞的凋亡率显著升高,差异有统计学意义(P<0.05);与BPA组比较,BPA+CQ组TM4细胞的Bcl-2蛋白表达量显著降低,而LC3-II、P62、Bax、Cleaved Caspase-3蛋白表达量及Bax/Bcl-2值显著升高,同时TM4细胞的凋亡率显著升高,差异有统计学意义(P<0.05);与BPA组比较,BPA+Rap组TM4细胞的Bcl-2蛋白表达量显著升高,而LC3-II、P62、Bax、Cleaved Caspase-3蛋白表达量及Bax/Bcl-2值显著降低,同时TM4细胞的凋亡率显著降低,差异有统计学意义(P<0.05)。结论 BPA诱导的TM4细胞凋亡可能是自噬流阻滞导致的,自噬流的通畅在BPA对TM4细胞的毒性损伤中可能发挥拮抗作用。

关键词：自噬细胞凋亡双酚A TM4细胞

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基于多样化反馈演进策略的协议模糊测试

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计算机技术与发展 2024年第10期34卷 84-92页

作者：钟宏夏云浩张金鑫马致原移动网络和移动多媒体技术国家重点实验室广东深圳518055 深圳市中兴软件有限责任公司广东深圳518057 南京中兴新软件有限责任公司江苏南京210012

网络协议是当今互联网通信的基础,其存在的安全问题可能会导致网络中大量设备面临灾难性风险。网络协议涵盖了各种层次和类型,每层都有其特性和目的,协议实现中的漏洞挖掘是计算机安全的一个具有挑战性的问题。该文提出一种适配多种公... 详细信息

网络协议是当今互联网通信的基础,其存在的安全问题可能会导致网络中大量设备面临灾难性风险。网络协议涵盖了各种层次和类型,每层都有其特性和目的,协议实现中的漏洞挖掘是计算机安全的一个具有挑战性的问题。该文提出一种适配多种公开或私有网络协议的黑盒模糊测试方案,可以在无需了解协议代码和规范的状况下发现协议实现中的漏洞。该方法面对物理层到应用层的多种网络协议,可以实现自动特征提取与学习,并依据结果生成高效的测试用例。同时,设计状态反馈、权重反馈、机器学习等多种反馈演进变异策略提高测试用例的有效性。此外,采用污点分析、执行流跟踪等技术监控被测目标测试执行过程及结果,使得测试结果更加精准,提升漏洞挖掘准确率。为了评估该方法的有效性,设计并实现了一个模糊测试原型系统,成功识别出协议实现中存在的未知漏洞。此外,还与业界主流的模糊测试工具进行了性能对比,从变异效率的多个维度体现该方法的优势。

关键词：网络协议漏洞挖掘模糊测试状态反馈权重反馈机器学习

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三峡地区松林坡剖面寒武系纽芬兰统天柱山段开腔骨类化石及其微细结构

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微体古生物学报 2024年第2期41卷 93-104页

作者：赵晓芳郭俊锋贠浩宋祖晨强亚琴彭佳欣张博耀孙洁西部矿产资源与地质工程教育部重点实验室长安大学地球科学与资源学院西安710054 陕西省早期生命与环境重点实验室西北大学地质学系西安710069

本文报道了湖北宜昌松林坡剖面寒武系纽芬兰统天柱山段开腔骨类骨片化石Chancelloria ***,***,Chancelloria sp.和Cambrothyra ampulliformis等2属3种及一个未定种。一些骨片的基面上保存了呈同心圆状规则分布于基孔周围的凹坑状微细结... 详细信息

本文报道了湖北宜昌松林坡剖面寒武系纽芬兰统天柱山段开腔骨类骨片化石Chancelloria ***,***,Chancelloria sp.和Cambrothyra ampulliformis等2属3种及一个未定种。一些骨片的基面上保存了呈同心圆状规则分布于基孔周围的凹坑状微细结构,该结构与软舌螺口盖肌肉附着结构的大小、形态极为相似,很可能代表了开腔骨类骨片的原生附着结构,起到辅助骨片和软体体壁连接的作用。因此,开腔骨动物很可能具有从表皮组织分化的表皮肌细胞,这证明开腔骨类应属于具表皮的基础真后生动物,而非海绵或海绵级别的动物类群。

关键词：开腔骨类附着结构天柱山段纽芬兰统三峡地区

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Experimental analysis of crack tip fields in rubber materials under large deformation

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Acta Mechanica Sinica 2012年第2期28卷 432-437页

作者： Xia Xiao Hai-Peng Song Yi-Lan Kang Xiao-Lei Li Xiao-Hua Tan hao-yun Tan Department of Mechanics Tianjin University300072 TianjinChina School of Mechanical Engineering Tianjin Polytechnic University300387 TianjinChina Hebei University of Technology 300401 TianjinChina

A three-nested-deformation model is proposed to describe crack-tip fields in rubber-like materials with large deformation. The model is inspired by the distribution of the measured in-plane and out-of-plane deformation. The in- plane displacement of crack-tip fields under both Mode 1 and mixed-mode （Mode I-II） fracture conditions is measured by using the digital Moir6 method. The deformation character- istics and experimental sector division mode are investigated by comparing the measured displacement fields under differ- ent fracture modes. The out-of-plane displacement field near the crack tip is measured using the three-dimensional digital speckle correlation method.

关键词： Crack-tip field. Large deformation Sector divi- sion mode. Three-nested-deformation model- Digital Moir6 method

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基于人体工效学的焊接工人作业姿势与疲劳研究

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价值工程 2024年第17期43卷 141-143页

作者：郭春东侯泽普李云浩沈琳河北科技大学经济管理学院石家庄050091 北京津发科技股份有限公司北京100080

焊接作业中长期使用不良姿势,容易加速作业疲劳,导致工作相关肌肉骨骼疾患。为了探究作业姿势与疲劳的影响机理,首先,基于人体工效学对典型的不良作业姿势进行改善;其次,以一线焊工为实验对象,通过表面肌电实验,测量焊工左右竖脊肌的表... 详细信息

焊接作业中长期使用不良姿势,容易加速作业疲劳,导致工作相关肌肉骨骼疾患。为了探究作业姿势与疲劳的影响机理,首先,基于人体工效学对典型的不良作业姿势进行改善;其次,以一线焊工为实验对象,通过表面肌电实验,测量焊工左右竖脊肌的表面肌电信号,对两种作业姿势作业过程中的肌肉疲劳特征进行研究;最后,根据实验结果,通过Jack对改善前后的作业姿势进行仿真验证。结果表明:作业姿势改善后效果良好,积分肌电值iEMG下降33.28%,均值方根(RMS)下降39.38%,L4/L5脊椎处压力减少69.8%。

关键词：作业姿势表面肌电信号肌肉疲劳 Jack仿真

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Modeling and Analysis for Supply Chain Using Stochastic Process Algebra

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Journal of Harbin Institute of Technology(New Series) 2014年第6期21卷 74-80页

作者： Yong-Tao Huang Min Lv Gang Wang Bing-Yin Ren hao-yun Zhang School of Mechatronics Engineering Harbin Institute of Technology Henan Tongli Cement Co. Ltd.

In order to improve the influence of the uncertain and dynamic of node enterprise behavior on the performance of supply chain,the method based on stochastic process algebra for description,analysis,validation and evaluation of supply chain business process model is ***,the description of the uncertainty of node enterprise behavior is given using the extended Unified Modeling Language sequence diagram,and mapping rule is defined from the extended Unified Modeling Language sequence diagram to stochastic process ***,on the basis of the acquired stochastic process algebra model,the supply chain business process model is verified with Mobility ***,according to the operational semantics of stochastic process algebra,the continuous-time Markov chain,isomorphic with stochastic process algebra model,is built; and the system performance evaluation of transient status and stable status is respectively conducted in accordance with Markov transfer relations and the current state of system,obtaining the predicted performance value and average performance index value for a specific period of *** simulation experiments show that the proposed method can accurately describe the stochastic behaviors of supply chain system and interactions among nodes,effectively verify the validity of the model,and objectively and exactly evaluate design of the supply chain.

关键词： supply chain stochastic process algebra business process performance evaluation Markov chain

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