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Mechanism analysis of regulating Turing instability and Hopf bifurcation of malware propagation in mobile wireless sensor networks

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Chinese Physics B 2024年第6期33卷 125-140页

作者：黄习习肖敏 Leszek Rutkowski 包海波黄霞曹进德 College of Automation&College of Artificial Intelligence Nanjing University of Posts and TelecommunicationsNanjing 210023China Systems Research Institute of the Polish Academy of Sciences 01-447 WarsawPoland College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China School of Mathematics Southeast UniversityNanjing 210096China

A dynamical model is constructed to depict the spatial-temporal evolution of malware in mobile wireless sensor networks(MWSNs). Based on such a model, we design a hybrid control scheme combining parameter perturbation and state feedback to effectively manipulate the spatiotemporal dynamics of malware propagation. The hybrid control can not only suppress the Turing instability caused by diffusion factor but can also adjust the occurrence of Hopf bifurcation induced by time delay. Numerical simulation results show that the hybrid control strategy can efficiently manipulate the transmission dynamics to achieve our expected desired properties, thus reducing the harm of malware propagation to MWSNs.

关键词： mobile wireless sensor networks reaction-diffusion Hopf bifurcation hybrid control

基于Si_(3)N_(4)微环混沌光频梳的Tbit/s并行实时物理随机数方案

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物理学报 2024年第8期73卷 123-130页

作者：王永博唐曦赵乐涵 #张鑫邓进吴正茂杨俊波周恒吴加贵夏光琼西南大学物理科学与技术学院重庆400715 西南大学微纳结构光电子学重庆市重点实验室重庆400715 电子科技大学光纤传感与通信教育部重点实验室成都610097 国防科技大学物质与材料科学实验中心长沙410073

本文结合片上Si_(3)N_(4)超高Q微环的混沌光频梳和高速现场可编程门阵列,提出并实验验证了一种超高速的并行实时物理随机数方案.结果表明,Si_(3)N_(4)超高Q微环实验得到的光频梳齿包含数百个信道,通过调节Si_(3)N_(4)微环的工作状态使... 详细信息

本文结合片上Si_(3)N_(4)超高Q微环的混沌光频梳和高速现场可编程门阵列,提出并实验验证了一种超高速的并行实时物理随机数方案.结果表明,Si_(3)N_(4)超高Q微环实验得到的光频梳齿包含数百个信道,通过调节Si_(3)N_(4)微环的工作状态使其处于光学混沌态,从而成为性能优良的物理熵源.采用现场可编程门阵列(FPGA)板载的多位模数转换器,对滤波后频梳的光混沌信号进行离散采样量化,生成8位二进制比特流.对该比特流进行实时的自延迟异或处理,并保留4位最低有效位,实验最终实现了单信道实时速率达5 Gbits/s的合格物理随机比特流.结合实验中数目达294的混沌光频梳齿,本方案的并行实时随机数的吞吐量可望达到1.74 Tbits/s.这些结果可为实时物理随机数源提供集成、超高速的新可选方案.

关键词：物理随机数实时混沌光频梳现场可编程门阵列

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流动的城乡与“留返”选择——基于甘肃省农业转移人口的调查分析

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城市发展研究 2024年第9期31卷 32-38页

作者：周韬薄慧敏李霞西北师范大学管理学院

农业转移人口是城乡一体化发展中的主体，这部分人的“留返”意愿、职业选择和心理预期直接关系到新型城镇化和乡村振兴战略的推进。通过对甘肃省的调查发现，现阶段，农业转移人口在城乡选择决策中存在“留城”和“返乡”两难选择现象... 详细信息

农业转移人口是城乡一体化发展中的主体，这部分人的“留返”意愿、职业选择和心理预期直接关系到新型城镇化和乡村振兴战略的推进。通过对甘肃省的调查发现，现阶段，农业转移人口在城乡选择决策中存在“留城”和“返乡”两难选择现象，且该现象与禀赋效应、心理账户、福利依赖以及自我扩张等主观心理之间有着密切联系。为帮助农业转移人口形成稳定的预期，应重视农业转移人口“留返”决策的心理因素，构建基于“留城”和“返乡”的“双通道”政策体系，形成政府引导、市场运作、自愿有序、城乡共荣的新型城镇化和乡村振兴并行发展路经。

关键词：农业转移人口 “留返”二兼选择禀赋效应心理账户

Experimental investigation of closed-loop active control to modulate coherent structures by mu-level method

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Chinese Physics B 2024年第7期33卷 408-417页

作者：白建侠范子椰姜楠李秋营郑小波 Department of Mathematics Tianjin Renai CollegeTianjin 301636China Institute of Mechanics Department of MechanicsSchool of Mechanical EngineeringTianjin UniversityTianjin 300354China College of Energy and Power Engineering Lanzhou University of TechnologyLanzhou 730050China Tianjin Key Laboratory of Modern Engineering Mechanics Tianjin 300354China

The experimental research on zero-net-mass-flux jet closed-loop active control was conducted in the wind *** mu-level method successfully detected burst events of the coherent structures. The streamwise velocity signals in the turbulent boundary layer were measured by HWA. The drag reduction rate of 16.7% is obtained comparable to that of the open-loop control and saves 75% of the input energy at the asynchronous 100 V/160 Hz control case, which reflects the advantages of the closed-loop control. The experimental findings indicate that the intensity increases in the near-wall *** perturbation of the PZT vibrators on the skewness factor is concentrated in the region y+< 60. The generation of highspeed fluids is depressed and the downward effect of high-speed fluids weakens. The alteration of energy distribution and the discernible impact of modulation between structures of varying scales are observed. The correlation coefficient exhibits a strong positive correlation, which indicates that the large-scale structures produce modulation effect on small-scale *** occurrence of burst events is effectively suppressed. The disturbance has the characteristics of stable periodicity,positive and negative symmetry, low intermittency, and high pulsation strength. The conditional phase waveform shows that the fluctuation amplitude increases, indicating amplitude modulation effects on coherent structures.

关键词： turbulent boundary layer(TBL) burst event coherent structures mu-level method

Veno-arterial extracorporeal membrane oxygenation for the treatment of obstructive shock caused by venous air embolism:A case report

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World Journal of Clinical Cases 2024年第19期12卷 4016-4021页

作者： Gui-Wei Zhu Yan-Min Li Wen-Hui Yue Jian-xia Sun Xin Zhou Ying-xia Xu Hai-bo Wang Qing-Hai Zhang Department of Critical Care Medicine The First Affiliated Hospital of Shandong Second Medical UniversityWeifang 261000Shandong ProvinceChina Office of Medical Affairs The First Affiliated Hospital of Shandong Second Medical UniversityWeifang 261042Shandong ProvinceChina Department of Hand&Foot Orthopedic Surgery The First Affiliated Hospital of Shandong Second Medical UniversityWeifang 261000Shandong ProvinceChina

BACKGROUND Venous air embolism(VAE)is a potentially lethal condition,with a reported incidence rate of about 0.13%,and the true incidence may be higher since many VAE are *** current treatments for VAE include Durant's maneuver,aspiration and removal of air through venous catheters,and hyperbaric oxygen *** critically ill patients,use of cardiotonic drugs and chest compressions remain useful *** wider availability of extracorporeal membrane oxygenation(ECMO)has brought a new option for VAE *** SUMMARY A 53-year-old female patient with VAE presented to the emergency clinic due to abdominal pain with fever for 1 d and unconsciousness for 2 *** day ago,the patient suffered from abdominal pain,fever,and *** suddenly became unconscious after going to the toilet during the intravenous infusion of ciprofloxacin 2 h ago,accompanied by nausea and vomiting,during which a small amount of gastric contents were *** was immediately sent to a local hospital,where cranial and chest computed tomography showed bilateral pneumonia as well as accumulated air visible in the right ventricle and pulmonary *** condition deteriorated despite endotracheal intubation,rehydration,and other treatments,and the patient was then transferred to our ***-arterial ECMO was applied in our hospital,and the patient's condition gradually *** patient was successfully weaned from ECMO and extubated after two *** ECMO may be an important treatment for patients with VAE in critical condition.

关键词： Venous air embolism Obstructive shock Veno-arterial extracorporeal membrane oxygenation Critical Case report

Effect of exercise during pregnancy on offspring development through ameliorating high glucose and hypoxia in gestational diabetes mellitus

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World Journal of Diabetes 2024年第11期15卷 2203-2219页

作者： Yi-bo Tang Le-Sha Wang Yi-Hui Wu Li-xia Zhang Lu-Yao Hu Qi Wu Meng-Lin Zhou Zhao-xia Liang Department of Obstetrics Women's Hospital School of MedicineZhejiang UniversityHangzhou 310006Zhejiang ProvinceChina Department of Obstetrics Shaoxing People’s HospitalShaoxing 312000Zhejiang ProvinceChina

BACKGROUND Gestational diabetes mellitus(GDM)women require prenatal care to minimize short-and long-term *** mechanism by which exercise during pregnancy affects organ development and whether glucose transporter(GLUT)1 plays a role in GDM offspring organ development remains *** To determine the effect of exercise during pregnancy on the cardiac,hepatic and renal development of GDM mother’s *** Placenta samples were collected from humans and *** mouse models were created using streptozotocin along with a GDM with exercise *** hearts,livers and kidneys of 3-and 8-week-old offspring were collected for body composition analysis and *** effects of high glucose levels and hypoxia were investigated using HTR8/*** and wound-healing assays were performed to assess cell *** accompanied with TUNEL and Ki67 staining was used to explore apoptosis and *** Exercise during pregnancy downregulated the GLUT1 and hypoxia inducible factor-1αexpression in placenta from individuals with *** chloride induced hypoxia and high glucose levels also significantly decreased migration and apoptosis of HTR8/SVneo *** addition,exercise reduced inflammatory cell infiltration in the liver and decreased the tubular vacuolar area in the kidneys of *** GDM affects the growth and development of organs in *** during pregnancy can reverse adverse effects of GDM on the development of the heart,liver,and kidney in offspring.

关键词： Gestational diabetes mellitus Exercise Glucose transporter 1 Hypoxia inducible factor-1α Placenta Offspring

《出发》:中国新主流电影的青年化、东方美学与类型融合范式

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电影评介 2024年第13期 30-37页

作者：程波夏梦頔上海大学上海电影学院上海温哥华电影学院

《出发》(刘智海,2024)作为中国新主流电影青年化的范式,具备学院派与作者性表达的双重特点,以“微传奇”的形式完美打破了宏大叙事的壁垒,成功填补了中国新主流电影对毛泽东早期革命生涯书写的空白,实现了个体关怀与情感共鸣的多维互... 详细信息

《出发》(刘智海,2024)作为中国新主流电影青年化的范式,具备学院派与作者性表达的双重特点,以“微传奇”的形式完美打破了宏大叙事的壁垒,成功填补了中国新主流电影对毛泽东早期革命生涯书写的空白,实现了个体关怀与情感共鸣的多维互动。在艺术性表达上,该片融入了浓厚的东方美学与诗意色彩,以记录式跟拍视角进行拍摄,应用多种象征性的审美符号,构建出想象的空间,形成虚实相生的诗意氛围与视觉美感;通过在地性与主旋律气质的有机互动,融合气象景观与地域方言,打造出独特的潇湘地域质感。影片结合了公路片等多种类型元素,实现了空间的再生产,展现了人物从个人理想到家国意识的转变,为革命领袖传记电影的再书写提供了一种新的思考与可能。

关键词：微传奇青年化东方美学类型化意识形态

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肠道微生物在肺癌发生发展及治疗中的研究进展

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南京医科大学学报（自然科学版） 2024年第1期44卷 130-137页

作者：夏经纬沈波南京医科大学附属肿瘤医院(江苏省肿瘤医院)肿瘤内科江苏省肿瘤防治研究所江苏南京210009

肺癌是全球恶性肿瘤相关死亡的首位病因,近年来,诸多研究发现肠道菌群在肺癌的发生发展中有着重要作用。肠道微生物群被认为是一种人体微生物器官,其不仅具有影响人体的消化、抗感染等功能,还可通过参与免疫调节、代谢等途径影响人体对... 详细信息

肺癌是全球恶性肿瘤相关死亡的首位病因,近年来,诸多研究发现肠道菌群在肺癌的发生发展中有着重要作用。肠道微生物群被认为是一种人体微生物器官,其不仅具有影响人体的消化、抗感染等功能,还可通过参与免疫调节、代谢等途径影响人体对肿瘤治疗的反应。此外,微生物和宿主细胞之间的相互作用对调节局部及全身的生理功能至关重要,可以影响宿主的局部微环境及免疫系统功能,从而影响肿瘤发生发展和抗肿瘤治疗效果。本文对肠道菌群影响肺癌发生发展的机制及其在肺癌治疗中的临床意义进行综述。

关键词：肠道微生物肺癌肠-肺轴治疗

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不同工况下可见-近红外光谱的煤矸识别研究

光谱学与光谱分析 2024年第3期44卷 821-828页

作者：刘涛李博夏蕊李瑞王学文太原理工大学机械与运载工程学院煤矿综采装备山西省重点实验室山西太原030024

在实现煤炭高效利用过程中,煤矸分选是一个非常重要的步骤,但现有的煤矸分选技术存在资源浪费,效率较低等问题。可见-近红外光谱识别技术具有快速可靠的优点,在煤矸识别领域已有一定的研究基础,但大多数研究并未结合实际工况进行有效分... 详细信息

在实现煤炭高效利用过程中,煤矸分选是一个非常重要的步骤,但现有的煤矸分选技术存在资源浪费,效率较低等问题。可见-近红外光谱识别技术具有快速可靠的优点,在煤矸识别领域已有一定的研究基础,但大多数研究并未结合实际工况进行有效分析。首先,在实验室中搭建可见-近红外光谱采集装置,模拟实际环境下不同探测角度(0°、10°、20°、30°)、探测距离(10、15、20、25 cm)、光照角度(15°、25°、35°、45°)三种工况,并分别在单因素条件以及正交试验设计的多因素条件下,采集山西西铭煤矿的煤和矸石样本在可见-近红外波段的光谱数据。其次,对采集的光谱数据进行分析,并先后经过标准正态变量变换和Savitzky-Golay卷积平滑,以减少噪音和误差对数据的影响。最后,在单因素试验中,结合预处理算法并基于决策树(DT)、K近邻(KNN)、偏最小二乘判别分析(PLS-DA)、支持向量机(SVM)、Adaboost五种机器学习模型对光谱数据进行训练。单因素试验结果表明,Adaboost算法具有较强的学习能力,在不同工况下对煤和矸石的识别准确率均为100%,优于其他识别模型。在正交试验中,支持向量机(SVM)作为识别模型进行训练,结果表明,在原始数据和预处理后的数据中,三种工况对煤矸识别准确率的影响程度不同,影响次序从大到小为不同光照角度、探测距离、探测角度。同时,对比实验结果可以得出,选用合适的预处理和建模方法可以降低不同工况对识别准确率的影响。预处理后的数据中,最优的工况组合为探测角度0°、探测距离20、光照角度35°。随机选取一组条件与最优组进行三次重复对照试验,结果表明最优组的识别表现优于随机对照组。研究结果对煤矸识别最优工况条件的寻找具有借鉴意义,并为可见-近红外光谱技术在煤矸识别领域的实际应用提供了理论基础。

关键词：可见-近红外光谱不同工况煤矸识别 Adaboost 正交试验