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A Self-Adapting and Efficient Dandelion Algorithm and Its Application to Feature Selection for Credit Card Fraud Detection

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IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 377-390页

作者： honghao Zhu MengChu Zhou Yu Xie Aiiad Albeshri IEEE School of Computer and Information Engineering Bengbu UniversityBengbu 233030China School of Information and Electronic Engineering Zhejiang Gongshang UniversityHangzhou 310018China Helen and John C.Hartmann the Department of Electrical and Computer EngineeringNew Jersey Institute of TechnologyNewark NJ 07102 USA College of Information Engineering Shanghai Maritime UniversityShanghai 201306China Department of Computer Science King Abdulaziz UniversityJeddah 21481Saudi Arabia

A dandelion algorithm(DA) is a recently developed intelligent optimization algorithm for function optimization problems. Many of its parameters need to be set by experience in DA,which might not be appropriate for all optimization problems. A self-adapting and efficient dandelion algorithm is proposed in this work to lower the number of DA's parameters and simplify DA's structure. Only the normal sowing operator is retained;while the other operators are discarded. An adaptive seeding radius strategy is designed for the core dandelion. The results show that the proposed algorithm achieves better performance on the standard test functions with less time consumption than its competitive peers. In addition, the proposed algorithm is applied to feature selection for credit card fraud detection(CCFD), and the results indicate that it can obtain higher classification and detection performance than the-state-of-the-art methods.

关键词： Credit card fraud detection(CCFD) dandelion algorithm(DA) feature selection normal sowing operator

Scenarios analysis and performance assessment of blockchain integrated in 6G scenarios

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Science China(Information Sciences) 2024年第7期67卷 5-26页

作者： Bo LI Guanjie CHENG honghao GAO Xueqiang YAN Shuiguang DENG College of Computer Science and Technology Zhejiang University College of Computer Science and Technology Shanghai University 2012 Lab Huawei Technologies Co. Ltd.

Emerging applications such as smart city infrastructures and virtual reality landscapes are setting rigorous benchmarks for 6G mobile networks, requiring elevated levels of confidentiality, integrity, nonrepudiation, authentication, and stringent access controls. Blockchain technology is heralded as a transformative enabler for meeting 6G standards, owing to its intrinsic attributes. However, a gap exists in the holistic investigation of blockchain's applicability in 6G realms, particularly addressing the “whether”, “when”, and“how” of its deployment. Present research trails in developing robust methodologies to gauge blockchain's efficacy within 6G use cases. Addressing this, our study introduces a novel confluence of blockchain with 6G networks, where data resides in distributed Hash tables(DHTs) while their hashes are secured in distributed ledger technology(DLT), harnessing blockchain's core strengths-immutability, traceability, and fortified security. We delineate seven specific 6G use cases poised for enhancement through blockchain integration,and scrutinize the rationale, nature, and timing of this convergence. Furthermore, we devise a comprehensive methodology for assessing blockchain's performance metrics and scalability in 6G environments. Our extensive experimental analyses evaluate the synergistic performance of this integration, revealing that the Quorum blockchain satisfactorily supports 80% of 6G scenarios. The findings suggest that, with appropriate configurations, consortium blockchains are well-equipped to fulfill the demanding performance and scalability requisites of 6G networks.

关键词： blockchain distributed ledger technology (DLT) 6G performance assessment 6G scenarios analysis transaction arrival rate

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构网型储能支撑新型电力系统稳定运行研究

高压电器 2023年第7期59卷 1-11页

作者：李建林丁子洋游洪灏杨本星北京未来电化学储能系统集成技术创新中心北方工业大学北京100144 国网江西省电力有限公司抚州供电分公司江西抚州344000

建设以新能源为主体的新型电力系统是实现“双碳”目标的关键。由于新能源存在一定波动性,且系统在同步发电机被替代后缺少稳定惯性支撑,易导致系统不能稳定运行,因此构网型储能应运而生。其可代替同步发电机实现对电网支撑,保障系统稳... 详细信息

建设以新能源为主体的新型电力系统是实现“双碳”目标的关键。由于新能源存在一定波动性,且系统在同步发电机被替代后缺少稳定惯性支撑,易导致系统不能稳定运行,因此构网型储能应运而生。其可代替同步发电机实现对电网支撑,保障系统稳定运行,故在新型电力系统中有广阔的应用前景。基于此,文中首先对构网型和跟网型储能变流器做出对比,为新型电力系统做出选型,通过对两者的比较说明构网型储能技术更适用于新型电力系统;其次,讨论构网型储能在新型电力系统中的定位及在其中的作用;最后从暂态过程、短期动态和长期动态三方面对构网型储能发展进行展望,为未来新型电力系统更好地建设提供思路。

关键词：新型电力系统构网型控制储能

Cardiac-Adaptive Conductive Hydrogel Patch Enabling Construction of Mechanical–Electrical Anisotropic Microenvironment for Heart Repair

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Research 2024年第1期2023卷 489-507页

作者： Xiaoping Song Jifeng Zhang Si Shen Dan Liu Jie Zhang Wenming Yin Genlan Ye Leyu Wang Liu Cai honghao Hou Xiaozhong Qiu Central Laboratory The Fifth Affiliated HospitalSouthern Medical UniversityGuangzhouGuangdong 510910China Department of Anatomy Neuroscience Laboratory for Cognitive and Developmental DisordersMedical College of Jinan UniversityGuangzhou 510630China Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering School of Basic Medical ScienceBiomaterials Research CenterSchool of Biomedical EngineeringSouthern Medical UniversityGuangzhouGuangdong 510515China

The biomimetic construction of a microstructural–mechanical–electrical anisotropic microenvironment adaptive to the native cardiac tissue is essential to repair myocardial infarction(MI).Inspired by the 3D anisotropic characteristic of the natural fish swim bladder(FSB),a novel flexible,anisotropic,and conductive hydrogel was developed for tissue-specific adaptation to the anisotropic structural,conductive,and mechanical features of the native cardiac extracellular matrix.The results revealed that the originally stiff,homogeneous FSB film was tailored to a highly flexible anisotropic hydrogel,enabling its potential as a functional engineered cardiac patch(ECP).In vitro and in vivo experiments demonstrated the enhanced electrophysiological activity,maturation,elongation,and orientation of cardiomyocytes(CMs),and marked MI repair performance with reduced CM apoptosis and myocardial fibrosis,thereby promoting cell retention,myogenesis,and vascularization,as well as improving electrical integration.Our findings offer a potential strategy for functional ECP and provides a novel strategy to bionically simulate the complex cardiac repair environment.

关键词： bladder thereby patch

不同容量下并网模式交流微电网短路故障早期检测与区域定位

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中国电机工程学报 2024年第11期44卷 4353-4366,I0014页

作者：郑昕甘鸿浩智能配电网装备福建省高校工程研究中心(福州大学电气工程与自动化学院) 福建省福州市350108

随着分布式电源(distributed generation,DG)的容量变化,微电网原有的供电结构发生改变,使得潮流大小、方向和功率结构发生变化,对快速检测和定位微电网中的短路故障区域提出了挑战。在MATLAB/Simulink中搭建低压交流微电网模型;通过高... 详细信息

随着分布式电源(distributed generation,DG)的容量变化,微电网原有的供电结构发生改变,使得潮流大小、方向和功率结构发生变化,对快速检测和定位微电网中的短路故障区域提出了挑战。在MATLAB/Simulink中搭建低压交流微电网模型;通过高尺度小波能量谱算法对微电网与大电网公共连接点(point of common coupling,PCC)处检测到的电流进行分解,提取适应不同容量情况的短路故障特征值,实现了不同容量下微电网短路故障的早期检测;利用小波能量谱特征结合基于正交最小二乘法(orthogonal least square,OLS)的径向基函数(radial basis function,RBF)神经网络算法提出一种适用于不同容量微电网的短路故障区域定位方法,并进行仿真验证;在此基础上设计并网模式微电网短路故障保护硬件系统,并进行实验验证。结果表明,所设计的保护系统能够快速、准确地同时实现并网模式下交流微电网短路故障的早期检测与区域定位。

关键词：并网模式微电网短路故障小波能量谱正交最小二乘法(OLS) 径向基函数(RBF) 早期检测区域定位

基于钯催化下烯丙基C(sp^(3))—H活化的不对称(4+1)串联环化反应

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有机化学 2024年第1期44卷 318-320页

作者：张洪浩石枫常州大学石油化工学院江苏常州213164 江苏师范大学化学与材料科学学院江苏徐州221116

催化不对称串联反应可以在一步操作中发生两个或多个连续的反应,实现多个化学键的有序断裂和重组,立体选择性地高效构建结构复杂多样的手性分子[1].该类反应原子经济性高、步骤简洁、立体选择性优异,被广泛地应用于有机合成中.新颖的催... 详细信息

催化不对称串联反应可以在一步操作中发生两个或多个连续的反应,实现多个化学键的有序断裂和重组,立体选择性地高效构建结构复杂多样的手性分子[1].该类反应原子经济性高、步骤简洁、立体选择性优异,被广泛地应用于有机合成中.新颖的催化不对称串联反应的设计和开发已成为有机化学前沿研究领域之一.过渡金属催化的不对称烯丙基取代反应是高选择性构建手性中心的高效策略,目前已取得了长足的发展[2].烯丙基底物与两性离子试剂的不对称环化反应可以构建具有高合成价值的手性烯基环状骨架,但通过传统的烯丙基取代反应来实现该转化存在较大的挑战(Scheme 1).

关键词：立体选择性手性中心手性分子有机化学钯催化过渡金属催化烯基原子经济性

The Preliminary Study on Screening and Application of Phthalic Acid-Degrading Bacteria

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Advances in Microbiology 2024年第4期14卷 226-239页

作者： honghao Zhang Lin Yang Rubing Xu Yuxiao Sun Yong Yang Yanyan Li College of Life Sciences Hubei University Wuhan China Hubei Academy of Tobacco Science Wuhan China Xuan’ en Branch Company of Enshi Tobacco Corporation Enshi China

Phthalic acid is a main pollutant, which is also an important reason for the continuous cropping effect of tobacco. In order to degrade the phthalic acid accumulated in the environment and relieve the obstacle effect of tobacco continuous cropping caused by the accumulation of phthalic acid in the soil. In this study, phthalate degrading bacteria B3 is screened from continuous cropping tobacco soil. The results of biochemical identification and 16sDNA comparison show that the homology between degrading bacterium B3 and Enterobacter sp. is 99%. At the same time, the growth of Enterobacter hormaechei subsp. B3 and the degradation of phthalic acid under different environmental conditions are studied. The results show that the environment with a temperature of 30˚C, PH of 7, and inoculation amount of not less than 1.2%, which is the optimal growth conditions for Enterobacter sp. B3. In an environment with a concentration of phthalic acid not exceeding 500 mg/L, Enterobacter sp. B3 has a better effect on phthalic acid degradation, and the degradation rate can reach 77% in 7 d. The results of indoor potting experiments on tobacco show that the degradation rate of phthalic acid by Enterobacter B3 in the soil is about 45%, which can reduce the inhibitory effect of phthalic acid on the growth of tobacco seedlings. This study enriches the microbial resources for degrading phthalic acid and provides a theoretical basis for alleviating tobacco continuous cropping obstacles.

关键词： Phthalic Acid Degrading Bacteria Rhizosphere Soil

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信赖作为受贿犯罪的保护法益

法学研究 2024年第1期46卷 148-165页

作者：金鸿浩北京化工大学马克思主义学院

保护法益是受贿犯罪研究中的核心论题之一。廉洁性说的通说地位瓦解后,客观进路的公正性说、不可收买性说、不可谋私利性说成为有力观点,但也面临外延不周等问题。主观进路的信赖法益说,主要因其内涵模糊而受到质疑,但上述质疑可以得到... 详细信息

保护法益是受贿犯罪研究中的核心论题之一。廉洁性说的通说地位瓦解后,客观进路的公正性说、不可收买性说、不可谋私利性说成为有力观点,但也面临外延不周等问题。主观进路的信赖法益说,主要因其内涵模糊而受到质疑,但上述质疑可以得到解释与回应。在认识论上,通过明确受贿犯罪信赖法益的国家法益属性、感情法益属性、部分可恢复性法益属性,对其内涵进行必要填充,更能揭示受贿犯罪危害国家政治合法性的本质特征。在方法论上,对于“利用职务上的便利”,应重点审查危害行为与信赖法益之间是否具有职权关联;对于“非法收受他人财物”“为他人谋取利益”,则应分别审查危害行为是否对廉洁性和公正性的信赖法益造成侵害,从而使保护法益与构成要件保持协调一致。在实践论上,针对受贿案件办理中的部分疑难问题,信赖法益说的审查方式,可以兼顾形式判断与实质判断,实现惩罚犯罪与保障人权的有机统一。

关键词：受贿犯罪保护法益信赖法益

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工程专业动态调整的演进趋势及驱动机制

高等工程教育研究 2024年第1期 65-72页

作者：金红昊华中科技大学教育科学研究院

在新一轮科技革命与产业变革的交叠背景下,建立富有弹性的工程专业动态调整机制,已成为工程人才供给侧改革的内在要求。本研究采集构建了2010—2021年间全国高校工程专业调整数据库,实证考察工程专业动态调整的演进趋势及其驱动机制。... 详细信息

在新一轮科技革命与产业变革的交叠背景下,建立富有弹性的工程专业动态调整机制,已成为工程人才供给侧改革的内在要求。本研究采集构建了2010—2021年间全国高校工程专业调整数据库,实证考察工程专业动态调整的演进趋势及其驱动机制。研究发现,“新工科”建设启动以来,高校增设工程专业的动力日益增强,且逐步转向以质量特色为核心的发展方向;但仍存在趋同性较高、周期性明显、专业有序退出机制尚未有效建立等问题。就驱动机制而言,高校工程专业调整受区域产业升级的外生驱动和优势学科衍生的内生驱动共同影响,且两者之间存在显著的协同效应。

关键词：工程专业动态调整区域产业升级优势学科衍生工程人才培养结构