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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 41-51页

作者： Bingjing Yan Pengchao Yao Tao Yang boyang Zhou Qiang Yang the College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Zhejiang Lab Hangzhou 311100China

Electric power grids are evolving into complex cyber-physical power systems(CPPSs)that integrate advanced information and communication technologies(ICTs)but face increasing cyberspace threats and *** study considers CPPS cyberspace security under distributed denial of service(ddoS)attacks and proposes a nonzero-sum game-theoretical model with incomplete information for appropriate allocation of defense resources based on the availability of limited *** time delay is applied to quantify the expected utility as CPPSs have high time requirements and incur massive damage ddoS *** resource allocation strategies are adopted by attackers and defenders under the three cases of attack-free,failed attack,and successful attack,which lead to a correspond.ng consumption of resources.A multidimensional node value analysis is designed to introduce physical and cybersecurity *** experiments and numerical results demonstrate the effectiveness of the proposed model for the appropriate allocation of defense resources in CPPSs under limited resource availability.

关键词： Game theory complex cyber-physical power system(CPPS) multidimensional evaluation distributed denial of service(ddoS)attack

Tumor necrosis factor-stimulated gene-6 ameliorates early brain injury after subarachnoid hemorrhage by suppressing NLRC4 inflammasome-mediated astrocyte pyroptosis

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Neural Regeneration Research 2024年第5期19卷 1064-1071页

作者： Mingxiang d.ng Lei Jin boyang Wei Wenping Cheng Wenchao Liu Xifeng Li Chuanzhi duan Neurosurgery Center Department of Cerebrovascular SurgeryThe National Key Clinical SpecialtyThe Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular DiseaseGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationThe Neurosurgery Institute of Guangdong ProvinceZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina department of Cerebrovascular Intervention Zhongshan City People’s HospitalZhongshanGuangdong ProvinceChina

Subarachnoid hemorrhage is associated with high morbidity and mortality and lacks effective *** is a crucial mechanism underlying early brain injury after subarachnoid *** studies have confirmed that tumor necrosis factor-stimulated gene-6(TSG-6)can exert a neuroprotective effect by suppressing oxidative stress and ***,no study to date has explored whether TSG-6 can alleviate pyroptosis in early brain injury after subarachnoid *** this study,a C57BL/6J mouse model of subarachnoid hemorrhage was established using the endovascular perforation *** results indicated that TSG-6 expression was predominantly detected in astrocytes,along with NLRC4 and gasdermin-d(GSdMd).The expression of NLRC4,GSdMd and its N-terminal domain(GSdMd-N),and cleaved caspase-1 was significantly enhanced after subarachnoid hemorrhage and accompanied by brain edema and neurological *** explore how TSG-6 affects pyroptosis during early brain injury after subarachnoid hemorrhage,recombinant human TSG-6 or a siRNA targeting TSG-6 was injected into the cerebral *** TSG-6 administration downregulated the expression of NLRC4 and pyroptosis-associated proteins and alleviated brain edema and neurological ***,TSG-6 knockdown further increased the expression of NLRC4,which was accompanied by more severe astrocyte *** summary,our study revealed that TSG-6 provides neuroprotection against early brain injury after subarachnoid hemorrhage by suppressing NLRC4 inflammasome activation-induced astrocyte pyroptosis.

关键词： astrocyte early brain injury inflammasome NLRC4 pyroptosis subarachnoid hemorrhage tumor necrosis factor-stimulated gene-6(TSG-6)

An evolutionary multiobjective method based on dominance and decomposition for feature selection in classification

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Science China(Information Sciences) 2024年第2期67卷 5-19页

作者： Jing LIAng Yuyang ZHAng Ke CHEN boyang QU Kunjie YU Caitong YUE Ponnuthurai Nagaratnam SUGANTHAN School of Electrical and Information Engineering Zhengzhou University State Key Laboratory of Intelligent Agricultural Power Equipment School of Electrical Engineering and Automation Henan Institute of Technology School of Electronics and Information Zhongyuan University of Technology KINdI Center for Computing Research College of EngineeringQatar University

Feature selection in classification can be considered a multiobjective problem with the objectives of increasing classification accuracy and decreasing the size of the selected feature subset. dominance-based and decomposition-based multiobjective evolutionary algorithms(MOEAs) have been extensively used to address the feature selection problem due to their strong global search capability. However, most of them face the problem of not effectively balancing convergence and diversity during the evolutionary process. In addressing the aforementioned issue, this study proposes a unified evolutionary framework that combines two search forms of dominance and decomposition. The advantages of the two search methods assist one another in escaping the local optimum and inclining toward a balance of convergence and diversity. Specifically, an improved environmental selection strategy based on the distributions of individuals in the objective space is presented to avoid duplicate feature subsets. Furthermore, a novel knowledge transfer mechanism that considers evolutionary characteristics is developed, allowing for the effective implementation of positive knowledge transfer between dominance-based and decomposition-based feature selection methods. The experimental results demonstrate that the proposed algorithm can evolve feature subsets with good convergence and diversity in a shorter time compared with 9 state-of-the-art feature selection methods on 20 classification problems.

关键词： evolutionary algorithms feature selection multiobjective optimization knowledge transfer classification

Isolation and microbial transformation of tea sapogenin from seed pomace of Camellia oleifera with anti-inflammatory effects

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Chinese Journal of Natural Medicines 2024年第3期22卷 280-288页

作者： SHEN Pingping JIAng Xuewa ZHAng Jingling WAng Jiayi Raj Richa LI Guolong GE Haixia WAng Weiwei YU boyang ZHAng Jian State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 210009China Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi&Education Ministry Shaanxi Province Key Laboratory of New Drugs and Chinese Medicine Foundation ResearchShaanxi University of Chinese MedicineXianyang 712046China School of Life Sciences Huzhou UniversityHuzhou 313000China Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine Nanjing 210046China Jiangsu Key Laboratory of TCM Evaluation and Translational Research China Pharmaceutical UniversityNanjing 211198China

In the current study,tea saponin,identified as the primary bioactive constituent in seed pomace of Camellia oleifera Abel.,was meticulously extracted and hydrolyzed to yield five known sapogenins:16-O-tiglogycamelliagnin B(a),camelliagnin A(b),16-O-angeloybarringtogenol C(c),theasapogenol E(d),theasapogenol F(e).Subsequent biotransformation of compound a facilitated the isolation of six novel metabolites(a1−a6).The anti-inflammatory potential of these compounds was assessed using pathogenassociated molecular patterns(PAMPs)and damage-associated molecular patterns molecules(dAMPs)-mediated cellular inflammation ***,compounds b and a2 demonstrated significant inhibitory effects on both lipopolysaccharide(LPS)and high-mobility group box 1(HMGB1)-induced inflammation,surpassing the efficacy of the standard anti-inflammatory agent,***,compounds d,a3,and a6 selectivity targeted endogenous HMGB1-induced inflammation,showcasing a pronounced *** results underscore the therapeutic promise of *** seed pomace-derived compounds as potent agents for the management of inflammatory diseases triggered by infections and tissue damage.

关键词： Camellia oleifera Seed pomace Tea sapogenin Microbial transformation damage-associated molecular patterns and Pathogen-associated molecular patterns Anti-inflammatory activity

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非对称结构纤维膜的制备及其热调控性能

纺织学报 2024年第2期45卷 11-20页

作者：田博阳王向泽杨湙雯吴晶北京服装学院北京市纺织纳米纤维工程技术研究中心北京100029 北京服装学院服装材料研究开发与评价北京市重点实验室北京100029

为获得在寒冷环境下可通过零能耗的方式使人体保持合适体温的织物,将浸渍法和静电纺丝法相结合,以二维过渡金属碳氮化合物(MXene)、聚多巴胺(PdA)、聚氨基甲酸酯(PU)为原料,棉织物(Fc)为基底,制备了二维过渡金属碳氮化合物黏附聚多巴胺... 详细信息

为获得在寒冷环境下可通过零能耗的方式使人体保持合适体温的织物,将浸渍法和静电纺丝法相结合,以二维过渡金属碳氮化合物(MXene)、聚多巴胺(PdA)、聚氨基甲酸酯(PU)为原料,棉织物(Fc)为基底,制备了二维过渡金属碳氮化合物黏附聚多巴胺-棉织物(MXene/PdA-C)为亲水层,PU纤维膜为疏水层的非对称结构(PU/MXene/PdA-C)纤维膜复合材料。借助扫描电子显微镜、液态水分管理仪、接触角测试仪、傅里叶红外光谱仪等对所制备的PU/MXene/PdA-C进行表征测试。结果表明:当疏水层静电纺丝时间为15 min时,非对称结构纤维复合膜的单向液体运输能力最好,具有优异的水蒸气透过率,可将人体皮肤的汗液快速导出;此外,MXene赋予非对称结构纤维复合膜出色的光热转化性能,在模拟太阳光照射下,与普通棉织物相比,能够升温约30℃。

关键词：静电纺丝纤维膜非对称结构热调控单向液体运输功能棉织物聚氨基甲酸酯

decoupling coefficients of dilatational wave for Biot's dynamic equation and its Green's functions in frequency domain

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Applied Mathematics and Mechanics(English Edition) 2016年第1期37卷 121-136页

作者： boyang d.ng A.H.d.CHEng Zhanglong CHEN City College Zhejiang University department of Civil Engineering Zhejiang University of Technology College of Civil Engineering and Architecture University of Mississippi

Green＇s functions for Blot＇s dynamic equation in the frequency domain can be a highly useful tool for the investigation of dynamic responses of a saturated porous medium. Its applications are found in soil dynamics, seismology, earthquake engineering, rock mechanics, geophysics, and acoustics. However, the mathematical work for deriving it can be daunting. Green＇s functions have been presented utilizing an analogy between the dynamic thermoelasticity and the dynamic poroelasticity in the frequency domain using the u-p formulation. In this work, a special term ＂decoupling coefficient＂ for the decomposition of the fast and slow dilatational waves is proposed and expressed to present a new methodology for deriving the poroelastodynamic Green＇s functions. The correct- ness of the solution is demonstrated by numerically comparing the current solution with Cheng＇s previous solution. The separation of the two waves in the present methodology allows the more accurate evaluation of Green＇s functions, particularly the solution of the slow dilatational wave. This can be advantageous for the numerical implementation of the boundary element method （BEM） and other applications.

关键词： decoupling coefficient dilatational wave Biot's equation poroelastodynamic Green's function frequency domain

绿色金融能否促进可再生能源发展:以绿色信贷和绿色风投为例

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生态经济 2024年第5期40卷 63-70页

作者：李博阳李廷瑞沈悦长安大学经济与管理学院陕西西安710064 西安交通大学经济与金融学院陕西西安710061

可再生能源发展是促进能源低碳转型的关键抓手,是我国经济可持续发展的重要支撑。论文基于中国23个省份2005—2020年的面板数据,从政策导向和市场导向、债权融资和股权融资的角度,选取绿色信贷和绿色风险投资作为绿色金融的代表,系统分... 详细信息

可再生能源发展是促进能源低碳转型的关键抓手,是我国经济可持续发展的重要支撑。论文基于中国23个省份2005—2020年的面板数据,从政策导向和市场导向、债权融资和股权融资的角度,选取绿色信贷和绿色风险投资作为绿色金融的代表,系统分析其对可再生能源发展的影响。研究发现:(1)绿色信贷和绿色风投能够显著促进可再生能源的发展,分维度剖析结果显示,二者能够有效促进水能、核能和风能和太阳能发电的发展。(2)作用机制检验结果显示,尽管绿色信贷和绿色风投均能通过促进产业结构升级和激励绿色技术创新两个渠道作用于可再生能源发展,但是绿色信贷对产业结构升级的推动效果更强,而绿色风投能够有效激励绿色技术创新提质增量。(3)异质性检验结果表明,绿色信贷和绿色风投对可再生能源发展的促进作用在金融发达地区和高市场化程度地区更为显著。研究结论能够为我国在实现碳达峰和碳中和过程中“构建绿色金融体系”和驱动可再生能源步入“高质量跨越式发展阶段”提供经验证据和政策参考。

关键词：绿色信贷绿色风投产业结构升级绿色技术创新可再生能源

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新型无线电能传输三维耦合机构的设计与优化

天津工业大学学报 2024年第2期43卷 75-82页

作者：李阳娄志刚胡涛成张博扬安张磊天津工业大学电气工程学院天津300387 天津理工大学电气工程与自动化学院天津300384

为了进一步提高无线电能传输系统(WPT)的空间自由度,提出了一种新型类半球体状发射机构,从理论角度出发,利用互感叠加原理与等效电路模型分析了三维无线电能传输系统的特性;建立阵列式三维电能传输系统仿真模型,分析不同控制方式下的磁... 详细信息

为了进一步提高无线电能传输系统(WPT)的空间自由度,提出了一种新型类半球体状发射机构,从理论角度出发,利用互感叠加原理与等效电路模型分析了三维无线电能传输系统的特性;建立阵列式三维电能传输系统仿真模型,分析不同控制方式下的磁场分布规律,分别从距离特性与磁场分布研究系统传输性能,并搭建了无线电能三维传输实验系统,对该发射机构的传输性能进行验证。结果表明:新型结构最远可在400 mm处实现效率为19.2%的能量传输;在相同距离下,处于同一水平面的负载线圈在各方向接收功率最大效率偏差仅为8%,具有高均匀度磁场;该新型三维耦合机构具有空间高自由度、无方向性等良好的传输性能。

关键词：无线电能传输(WPT) 三维发射线圈空间高自由度传输特性

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decentralized Control of Multiagent Navigation Systems

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IEEE/CAA Journal of Automatica Sinica 2022年第5期9卷 922-925页

作者： boyang Zhang Henri P.Gavin IEEE department of Civil and Environmental Engineering Duke UniversityDurhamNC 27708 USA

dear editor,In this letter,we introduce a decentralized,nonlinear,discontinuous,and computationally simple control law for large scale multiagent navigation *** control is based on extend.ng Gauss’s principle of least constraint with a dynamic incorporation of inequality constraints,actuator saturation,and actuator *** no individual path planner,each agent executes its motion and generates its control actions by reacting solely to the evolution of its constrained dynamics,which is equivalent to solving a linear matrix equation with a dimension up to around 20 without iteration at each time *** experiments are conducted on hundreds of two-dimensional(2-d)double integrators subjected to path and collision constraints,demonstrating the promise of the proposed method.

关键词： dynamics method constraints

不同采集年份大花红景天种子萌发对温度的响应

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草业科学 2024年第8期41卷 1924-1933页

作者：耿博阳覃滢卜杨丽娥彭德力云南师范大学生命科学学院云南昆明650500 云南师范大学地理学部云南昆明650500 云南省生物质能与环境生物技术重点实验室云南昆明650500

为确定温度变化对大花红景天(Rhodiola crenulata)种子萌发的影响,本研究以云南省香格里拉市大雪山居群的种子为材料,探究不同采集年份(2014、2015、2016、2019、2020、2021年)种子的萌发对温度(恒温:1、5、10、15、20、25、30、35℃;变... 详细信息

为确定温度变化对大花红景天(Rhodiola crenulata)种子萌发的影响,本研究以云南省香格里拉市大雪山居群的种子为材料,探究不同采集年份(2014、2015、2016、2019、2020、2021年)种子的萌发对温度(恒温:1、5、10、15、20、25、30、35℃;变温:15℃/5℃、25℃/15℃)的响应机制。结果表明:大花红景天种子萌发温度阈值较宽,1~35℃均可萌发,具有较宽的萌发温度生态位幅度(0.831~0.891),15~25℃萌发效果最佳;变温与相应恒温相比不能显著增加最终萌发率。通过积温模型模拟,种子萌发最低温度(Tb)为−0.49~0.82℃,萌发最适温度(To)为19.38~20.88℃,萌发最高温度(Tc)为34.21~38.76℃,亚适温条件下的种子萌发积温值为40.7~67.11℃·d。综上,大花红景天种子具有“机会主义”萌发行为,萌发最低温度较低且具有较宽的萌发温度窗口,使其可以在早春大量萌发,以保证幼苗拥有较长的生长季。研究结果为保护与利用野生大花红景天资源提供了一些参考。

关键词：濒危植物大花红景天采集年份温度种子萌发积温模型萌发生态位