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Guarding Legal Communication with Smart Jammer:Stackelberg Game Based Power Control Analysis

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China Communications 2021年第4期18卷 126-136页

作者： Zhe Su Nan Qi Yongjie Yan zhiyong du Jiaxin Chen Zhibin Feng Qihui Wu College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China State Key Laboratory of Air Traffic Management System and Technology Nanjing 210014China th Research Institute of China Electronics Technology Group Corporation Nanjing 210007China College of Information and Communication National University of Defense TechnologyChangsha 430010China College of Communications Engineering Army Engineering University of PLANanjing 210000China

This paper investigates a power control problem in a jamming system,where a separate smart jammer is deployed to ensure the communication security of the legal ***,due to power leakage,the smart jammer may incur unintentional interference to legal *** key is how to suppress illegal communication while limit the negative impact on legal user.A jamming counter measure Stackelberg game is formulated to model the jamming power control dynamic of the *** smart jammer acts as a leader to sense and interfere illegal communications of the illegal user,while the illegal user acts as a *** the game,the impact of uncertain channel information is taken into *** to whether illegal user considers the uncertain channel information,we investigate two scenarios,namely,illegal user can obtain statistical distribution and accurate information of interference channel gain and its own cost,*** work not only proposes a jamming counter measure iterative algorithm to update parameters,but also gives two solutions to obtain the Stackelberg equilibrium(SE).The power convergence behaviours under two scenarios are analyzed and ***,brute force is used to verify the accuracy of the SE value further.

关键词： power control jamming communication Received:Apr.13,2020 Revised:Sep.01,2020 Editor:Haifeng Zheng systems Stackelberg game

Effect of quenching residual stress on precipitation behaviour of 7085 aluminium alloy

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Journal of Materials Science & Technology 2023年第1期132卷 154-165页

作者： Jin Liu zhiyong du Jinlong Su Jie Tang Fulin Jiang Dingfa Fu Jie Teng Hui Zhang College of Materials Science and Engineering Hunan UniversityChangsha 410082China

The quenching-induced residual stress in ultrahigh strength Al-Zn-Mg-Cu alloys has a great influence on their precipitation behaviour in subsequent heat treatment and the properties of the final *** the present work,the cladding quenching method was employed for 7085 Al alloy slabs to tailor different quenching residual *** the effects of quenching residual stress on the precipitation behaviour of the 7085 Al alloy were investigated through finite element analysis,residual stress and hardness distri-bution measurements and microstructural *** results indicate that the reduction in resid-ual stress increases with increasing cladding layer *** a cladding layer thickness in the range of 1-1.4 mm,the residual stress is almost *** hardness at the surface of the aged sample with a large compressive residual stress is decreased,while the hardness at the centre of the sample with a large tensile residual stress is *** hardness is approximately identical between the aged sam-ples with little or no residual *** elastic lattice distortion caused by residual stress is found to promote the nucleation of precipitates during the artificial ageing *** in-depth mechanisms for the effect of quenching residual stress on the precipitation of 7085 Al alloy are also discussed.

关键词： Aluminium alloy Quenching Residual stress Precipitation Finite element method

Design of ring-sector-assisted PANDA ring-core few mode fiber

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Optoelectronics Letters 2022年第6期18卷 366-371页

作者： du zhiyong WANG Chuncan LI Peixin PEI Li ZHENG Jingjing NING Tigang Key Laboratory of All Optical Network and Advanced Telecommunication Network Ministry of EducationInstitute of Lightwave TechnologyBeijing Jiaotong UniversityBeijing 100044.China

For the PANDA ring-core polarization-maintaining few-mode fiber(RC-PM-FMF)with the given supported eigenmodes,the minimum effective refractive index difference min(Δneff)between the adjacent eigenmodes decreases with the RC ***,we propose a PANDA RC-PM-FMF assisted by a ring-sector(RS)structure,which can be used to mainly increase theΔneff values between the adjacent even and odd eigenmodes with the same *** RS-RC-PM-FMF with an appropriate choice of the parameters can support 10 linearly polarized(LP)eigenmodes,which have min(Δneff)values higher than 1.9×10^(-4) for the adjacent eigenmodes over the whole C+L ***,the fiber is characterized by the low group velocity dispersion(GVD)(-40—20 ps·nm^(-1)·km^(-1))and effective mode areas(63—104μm^(2)),while the total losses are within the range of 0.19—0.23 d B/km over the whole band.

关键词： mode PANDA dispersion

High Frequency Communication Network with Diversity: System Structure and Key Enabling Techniques

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China Communications 2018年第9期15卷 46-59页

作者： Kun Xu Bin Jiang Zeyou Su Shengqing Wang Makun Guo Xiao Li zhiyong du College of Information and Communication National University of Defense Technology

High frequency sky wave communication suffers from poor performance including poor link quality and low link success rate. To enhance performance, diversity technology is proposed in the high frequency communication network(HFCN) in this ***, we present the benefits and the challenges by introducing diversity technology into the existing HFCN. Secondly, to exploit the benefits fully and overcome the challenges, we propose a system structure suitable for deploying diversity technology in HFCN in large scale,based on the cloud radio access network and software defined network. Moreover, we present a general structure for the real-time updating frequency management system that plays a more important role especially when resource consuming(e.g., frequency) diversity technology is deployed. Thirdly, we investigate the key techniques enabling diversity technology deployment. Finally, we point out the future research directions to help the HFCN with diversity work more efficiently and intelligently.

关键词： high frequency high frequency communication network diversity technology access layer and core layer frequency management system

A microfluidic coculture model for mapping signaling perturbations and precise drug screening against macrophage-mediated dynamic myocardial injury

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Acta Pharmaceutica Sinica B 2024年第12期14卷 5393-5406页

作者： Gao, Zhao du, zhiyong Hou, Yu Hua, Kun Tu, Pengfei Ai, Xiaoni Jiang, Yong State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Beijing 100191 China The Key Laboratory of Remodeling-Related Cardiovascular Diseases Ministry of Education National Clinical Research Center for Cardiovascular Diseases Beijing Anzhen Hospital Capital Medical University Beijing Institute of Heart Lung and Blood Vessel Disease Beijing 100029 China

Macrophage-mediated inflammation plays a pivotal role in cardiovascular disease pathogenesis. However, current cell-based models lack a comprehensive understanding of crosstalk between macrophages and cardiomyocytes, hindering the discovery of effective therapeutic interventions. Here, a microfluidic model has been developed to facilitate the coculture of macrophages and cardiomyocytes, allowing for mapping key signaling pathways and screening potential therapeutic agents against inflammation-induced dynamic myocardial injury. Through metabolic profiling and bioinformatic enrichment analysis, the microchip model with dynamic cell-cell crosstalk reveals robust activation of inflammatory and oxidative stress-associated metabolic pathways, closely resembling metabolic profiles of myocardial infarction in both humans and rodents. Furthermore, an integrative screening strategy has been established to screen bioactive natural products precisely, identifying ginsenoside Rb1 and protocatechualdehyde as promising cardioprotective candidates in vitro and in vivo. Taken together, the microfluidic coculture model advances mechanistic insight into macrophage-mediated cardio-immunology and may accelerate the discovery of therapeutics for myocardial injury. © 2024 The Authors

关键词： Drug screening Heart-on-a-chip Macrophage-mediated inflammation Metabolomics Microfluidics

Comparative analysis of four edible mushrooms based on HPLC fingerprint and pattein recognition analysis

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Journal of Future Foods 2024年第1期4卷 105-110页

作者： Xiali Si Xinyu Liu Shuangyu Shao zhiyong du Pengfei Tu Qingying Zhang Strate Key Laboratory of Natoral oud Biomimenic Drugs and Deportment of Natral Menicines School of Phormocutical ScimncesPekang Uravensin Heath Science CenterBeijing 100191China

A high performance liquid chromatography-ultraviolet(HPLC-UV)fingerprint method for the overall chemical analysis of edible mushrooms was established based on Auricularia heimuer for the first time,and then applied to analyze 60 batches of ***,Auricularia *** cornea*Yu Muer’and TremeUa fuciformis.A total of 9 characteristic peaks of ***.11 characteristic peaks of ***,6 characteristic peaks of ***‘Yu Muer’,and 9 characteristic peaks of I fuciformis were ***,a combinatory analysis,including similarity evaluation,hierarchical cluster analysis and principal component analysis,revealed the chemical consistency and difference between samples from the same and different *** HPLC fingerprint method established in this paper could be used to characterize the components of ***,***,***‘Yu Muer’,and *** and discriminate the 4 edible mushrooms effectively in combination with pattern recognition analysis.

关键词： Edible mushrooms High performance liquid chromatography fingerprint Pattern recognition analysis Auricularia heimuer Auricularia cornea Tremella fiiciformis

Activation of the Macrophage-Associated Inflammasome Exacerbates Myocardial Fibrosis Through the 15-HETE-Mediated Pathway in Acute Myocardial Infarction

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Engineering 2024年第11期42卷 143-156页

作者： Xu Chen zhiyong du Dongqing Guo Jincheng Guo Qianbin Sun Tiantian Liu Kun Hua Chun Li Yong Wang Wei Wang School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China Department of Pharmacy Air Force Medical CenterAir Force Medical UniversityBeijing 100142China National Clinical Research Center for Cardiovascular Diseases Beijing Institute of Heart Lung and Blood Vessel DiseaseBeijing Anzhen HospitalCapital Medical UniversityBeijing 100029China School of Life Sciences Beijing University of Chinese MedicineBeijing 100029China Modern Research Center for Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China State Key Laboratory of Traditional Chinese Medicine Syndrome Guangzhou University of Chinese MedicineGuangzhou 510006China

This investigation elucidates the spatiotemporal dynamics of NOD-like receptor family pyrin domain con-taining 3(NLRP3)inflammasome activation following myocardial infarction(MI),a process that has not been fully *** revealed early activation of the NLRP3 inflammasome in mice with MI and characterized its dynamic temporal ***,the knockout and inhibition of Nlrp3 expression were found to significantly mitigate infarct size and enhance cardiac ***,our analysis of the spatial characteristics of inflammasome activation revealed predominant activation in macro-phages and subsequent activation in fibroblasts on the third day *** elucidate the nexus between macrophage-associated NLRP3 inflammasome activation and myocardial fibrosis,we employed targeted metabolomics analyses of inflammatory oxylipins,small interfering RNA(siRNA)interference experi-ments,and various molecular *** findings revealed that macrophage-associated inflammasome activation facilitates the conversion of fibroblasts into myofibroblasts via the 15-hydroxy-5,8,11,13-eicosatetraenoic acid(15-HETE)-mediated small mother against decapentaplegic(Smad)***,both mass spectrometry imaging(MSI)and targeted metabolomics analyses confirmed the significant increase in 15-HETE levels in mice with MI and in patients with MI and acute coronary syndrome(ACS).Our comprehensive dataset suggests that NLRP3 inflammasome activation in MI is char-acterized by distinct temporal and spatial *** insights mark a significant advancement toward precise MI prevention and treatment strategies,particularly early myocardial fibrosis intervention.

关键词： Myocardial infarction Macrophage inflammasome NOD-like receptor family pyrin domain containing 3 Myocardial fibrosis

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破碎站大块物料安全通过能力影响因素分析

中国安全科学学报 2023年第S02期33卷 111-115页

作者：杜志勇国家能源集团宝日希勒能源有限公司露天煤矿内蒙古呼伦贝尔021008

为提高物料破碎效率,解决露天矿破碎站大块物料导致的卡料堵塞问题,建立散体物料模型和物料粒度数学模型。首先,分析物料所受破碎力影响因素,建立不同因素作用下破碎力的数学模型;然后,以CR610/14-35型双齿辊破碎机为例,对不同齿辊中心... 详细信息

为提高物料破碎效率,解决露天矿破碎站大块物料导致的卡料堵塞问题,建立散体物料模型和物料粒度数学模型。首先,分析物料所受破碎力影响因素,建立不同因素作用下破碎力的数学模型;然后,以CR610/14-35型双齿辊破碎机为例,对不同齿辊中心距和齿高下不同物料的受力进行数值模拟。结果表明:物料粒度、齿辊中心距以及齿辊齿高是影响破碎站大块物料通过能力的主要因素;物料所受切向力随齿辊中心距增加而减小,随齿辊齿高增加而增大。

关键词：双齿辊破碎机物料粒度切向力中心距齿高

Changes in neuronal apoptosis and apoptosis modulatory factors in cerebral ischemia/reperfusion

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Neural Regeneration Research 2007年第6期2卷 344-349页

作者： Liying Qiu Ying Li Hongbin Fan Bin du zhiyong Yang Jianqing Cheng Division of Basic Medical Science School of Medicine Meiyuan Branch of Southern Yangtze University Wuxi China

BACKGROUND： The high concentration of glutamate release is the main cause for neuronal cell death. The relationship between glutamate level and apoptosis during ischemia/reperfusion injury is still unclear. OBJECTIVE： To observe the neuronal apoptosis at 24 and 72 hours following cerebral ischemia/reperfusion in rats, and analyze the possible influencing factors. DESIGN： A randomized controlled animal experiment. SETTING： School of Medicine, Southern Yangtze University. MATERIALS： Totally 30 male adult Sprague Dawley （SD） rats of clean grade, weighing 240 - 290 g, were obtained from Shanghai Experimental Animal Center, Chinese Academy of Sciences. The rats were randomly divided into sham-operated group （n=10） and model group （n=20）. Each group was observed at 24 and 72 hours after ischemia/reperfusion, 5 rats at each time point in the sham-operated group, whereas 12 at 24 hours and 8 at 72 hours in the model group. Kits for determining apoptosis and Bcl-2 were bought from Wuhan Boster Biological Technology, Co., Ltd.; Kit for calcineurin from Nanjing Jiancheng Bioengineering Institute. METHODS： The experiment was carried out in the Functional Scientific Research Room of Southern Yangtze University from June to October in 2006.①Right middle cerebral artery was occluded by inserting a thread through internal carotid artery （ICA）. The surgical process for the sham-operated rats was the same as that in the model group except a nylon suture inserted the ICA. According to Longa five-degree standard, the neurological deficit evaluation of rats was evaluated after surgery, and grades 1 - 3 were taken as successful model establishment. The blood was recirculated by withdrawing the nylon filament under anesthesia at 2 hours after ischemia in successful rat models. ②After reperfusion, the brain tissue was quickly removed at 24 or 72 hours and the slices were obtained from optic chiasma to funnel manubrium. The changes of the number of apoptotic cells were observed using the te

关键词： brain ischemia reperfusion injuries excitatory amino acids cell apoptosis