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Improving Federated Learning through Abnormal Client Detection and Incentive

Computer Modeling in Engineering & Sciences 2024年第4期139卷 383-403页

作者： Hongle Guo Yingchi Mao Xiaoming He Benteng zhang Tianfu Pang Ping Ping College of Computer and Information Hohai UniversityNanjing211100China Key Laboratory ofWater Big Data Technology of Ministry ofWater Resources Hohai UniversityNanjing211100China

Data sharing and privacy protection are made possible by federated learning,which allows for continuous model parameter sharing between several clients and a central *** reliable and high-quality clients must participate in practical applications for the federated learning global model to be accurate,but because the clients are independent,the central server cannot fully control their *** central server has no way of knowing the correctness of the model parameters provided by each client in this round,so clients may purposefully or unwittingly submit anomalous data,leading to abnormal behavior,such as becoming malicious attackers or defective *** reduce their negative consequences,it is crucial to quickly detect these abnormalities and incentivize *** this paper,we propose a Federated Learning framework for Detecting and Incentivizing Abnormal Clients(FL-DIAC)to accomplish efficient and security federated *** build a detector that introduces an auto-encoder for anomaly detection and use it to perform anomaly identification and prevent the involvement of abnormal clients,in particular for the anomaly client detection *** them,before the model parameters are input to the detector,we propose a Fourier transform-based anomaly data detectionmethod for dimensionality reduction in order to reduce the computational ***,we create a credit scorebased incentive structure to encourage clients to participate in training in order tomake clients actively *** training models(CNN,MLP,and ResNet-18)and three datasets(MNIST,Fashion MNIST,and CIFAR-10)have been used in *** to theoretical analysis and experimental findings,the FL-DIAC is superior to other federated learning schemes of the same type in terms of effectiveness.

关键词： Federated learning abnormal clients incentive credit score abnormal score detection

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Fractional Gradient Descent RBFNN for Active Fault-Tolerant Control of Plant Protection UAVs

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Computer Modeling in Engineering & Sciences 2024年第3期138卷 2129-2157页

作者： Lianghao Hua Jianfeng zhang Dejie Li Xiaobo Xi School of Mechanical Engineering Yangzhou UniversityYangzhou225009China College of Intelligent Manufacturing Yangzhou Polytechnic InstituteYangzhou225009China School of Automation Nanjing University of Aeronautics and AstronauticsNanjing211106China

With the increasing prevalence of high-order systems in engineering applications, these systems often exhibitsignificant disturbances and can be challenging to model accurately. As a result, the active disturbance rejectioncontroller (ADRC) has been widely applied in various fields. However, in controlling plant protection unmannedaerial vehicles (UAVs), which are typically large and subject to significant disturbances, load disturbances andthe possibility of multiple actuator faults during pesticide spraying pose significant challenges. To address theseissues, this paper proposes a novel fault-tolerant control method that combines a radial basis function neuralnetwork (RBFNN) with a second-order ADRC and leverages a fractional gradient descent (FGD) *** integrate the plant protection UAV model’s uncertain parameters, load disturbance parameters, and actuatorfault parameters and utilize the RBFNN for system parameter identification. The resulting ADRC exhibits loaddisturbance suppression and fault tolerance capabilities, and our proposed active fault-tolerant control law hasLyapunov stability implications. Experimental results obtained using a multi-rotor fault-tolerant test platformdemonstrate that the proposed method outperforms other control strategies regarding load disturbance suppressionand fault-tolerant performance.

关键词： Radial basis function neural network plant protection unmanned aerial vehicle active disturbance rejection controller fractional gradient descent algorithm

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Identification of hub genes associated with Helicobacter pylori infection and type 2 diabetes mellitus:A pilot bioinformatics study

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World Journal of Diabetes 2024年第2期15卷 170-185页

作者： Han Chen Guo-Xin zhang Xiao-Ying Zhou Department of Gastroenterology The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210003Jiangsu ProvinceChina Department of Gastroenterology Jiangsu Province HospitalNanjing 210029Jiangsu ProvinceChina

BACKGROUND Helicobacter pylori(***)infection is related to various extragastric diseases including type 2 diabetes mellitus(T2DM).However,the possible mechanisms connecting *** infection and T2DM remain *** To explore potential molecular connections between *** infection and *** We extracted gene expression arrays from three online datasets(GSE60427,GSE27411 and GSE115601).Differentially expressed genes(DEGs)commonly present in patients with *** infection and T2DM were *** genes were validated using human gastric biopsy *** between hub genes and immune cell infiltration,miRNAs,and transcription factors(TFs)were further *** A total of 67 DEGs were commonly presented in patients with *** infection and *** significantly upregulated hub genes,including TLR4,ITGAM,C5AR1,FCER1G,and FCGR2A,were finally identified,all of which are closely related to immune cell *** gene-miRNA analysis detected 13 miRNAs with at least two gene ***-gene interaction networks showed that TLR4 was coregulated by 26 TFs,the largest number of TFs among the 5 hub *** We identified five hub genes that may have molecular connections between *** infection and *** study provides new insights into the pathogenesis of ***-induced onset of T2DM.

关键词： Helicobacter pylori Type 2 diabetes mellitus Bioinformatics analysis Differentially expressed genes Hub genes

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Hydrophilic polyanionic hydrogel electrolyte for anti-freezing and bending resistant zinc-ion hybrid supercapacitors

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Journal of Materiomics 2024年第6期10卷 1299-1307页

作者： Xuejuan Wan Hangqi Song Zejia Zhao Zuocai zhang Jingwei Wang Junye Cheng Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen518060China Department of Materials Science Shenzhen MSU-BIT UniversityShenzhen517182China Institute of Semiconductor Manufacturing Research College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen518060China

Zinc-ion hybrid supercapacitors(ZHSCs)have been widely considered as promising candidates for flexible electrochemical energy storage *** key challenge is to develop hydrogel electrolytes with high hydrophilicity,anti-freezing,bending resistance,and stable interface with *** study reported a hydrogel electrolyte system that can meet the above functions,in which the zincophilic and negatively charged SO3−,migratable Na+,abundant hydrophilic functional groups,gum xanthan,and porous architecture could effectively promote the electrochemical performance of *** with such hydrogel electrolytes not only exhibited good low-temperature performance but also showed excellent bending resistance ability.A high specific capacitance could be kept after a long air-working lifespan over 10,000 cycles under a wide operation voltage of 1.85 V at−10℃.Furthermore,flexible ZHSCs could maintain the capacitance retention of 93.18%even after continuous 500 bends at an angle of 180°.The designed hydrogel electrolytes could be also used for other electrochemical energy storage devices with anti-freezing and bending resistance by changing electrolyte salt.

关键词： Zn-ion hybrid supercapacitors Polyanionic Anti-freezing Bending resistance Porous architecture

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Synthetic Studies toward Pseudolaric Acids:Radical Cyclization to Form Bridged Scaffold

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Chinese Journal of Chemistry 2024年第15期42卷 1699-1705页

作者： Yujie Niu Minggui Lin Hao Cui Yanji Huang Yang Shen Yandong zhang State Key Laboratoryof Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian ProvinceicHEMCollege of Chemistryand Chemical EngineeringXiamen UniversityXiamenFujian 361005China

Pseudolaric acids are a family of diterpenoid natural products that exhibit a broad spectrum of biological *** main structural feature of their framework is a trans-fused perhydroazulene bearing a bridged lactone positioned at the junction of the ***,we have developed a radical cyclization strategy that allows flexible tuning of the cyclization process through diverse silicon substitutions on the *** strategy can assist in constructing a series of skeletons with structural resemblance to pseudolaric acids and expedites the construction of the bridged ***,it facilitates the synthesis of the entire skeletal structure of the pseudolaric acidfamily of natural products,excludingthe B-ringfunctionalization.

关键词： Terpenoids Total synthesis Radical cyclization Bridged cycles Regioselectivity

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Combined effects of climate and land-use changes on the alpha and beta functional diversities of terrestrial mammals in China

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Science China(Life Sciences) 2024年第10期67卷 2224-2233页

作者： Chao zhang Yumei Li Wei Wang Zexuan Gao Hanqing Liu Yonggang Nie Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China College of Life Sciences Hebei UniversityBaoding 071002China University of Chinese Academy of Sciences Beijing 100049China

Climate and land-use changes are predicted to impact biodiversity,threatening ecosystem services and ***,their combined effects on the functional diversity of mammals at the regional scale remain unclear,especially at the beta ***,we use projected climate and land-use changes in China to investigate their potential effects on the alpha and beta functional diversities of terrestrial mammals under low-and high-emission *** the current projection,we showed strong positive spatial correlations between functional richness and species *** evenness(FEve),functional specialization(FSpe),and functional originality(FOri)decreased with species richness,and functional divergence(FDiv)increased first and then *** beta diversity was dominated by its nestedness component,in contrast to the taxonomic *** changes in species richness are more strongly influenced by land-use change under the low-emission scenario,while under the high-emission scenario,they are more strongly influenced by climate *** in functional richness(FRic)were inconsistent with those in species richness,with a magnitude of decreases greater than predicted from species ***,mammal assemblages showed potential functional differentiation(FD)across the country,and the trends exceeded those towards taxonomic differentiation(TD).Our findings help us understand the processes underlying biodiversity responses to global changes on multiple facets and provide new insight for conservation plans.

关键词： climate change land-use change functional diversity terrestrial mammals biodiversity conservation

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CircTHSD4 promotes the malignancy and docetaxel (DTX) resistance in prostate cancer by regulating miR-203/HMGA2 axis

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Oncology Research 2024年第3期32卷 529-544页

作者： JIANYUN XIE LINIE LU JIALI zhang QIRUI LI WEIDONG CHEN Depatment of Urology The Affliated People's Hospital of Fujian University of Traditional Chinese MedicineFuzhouChina Department of Internal Medicine Outpatient ainic The Afliated People's Hospital of Fujian University of Traditional Chinese MedicineFuzhouChina

Objective:Circular ribose nudeic acids(circRNAs)are implicated in tumor progression and drug resistance of prostate cancer(PCa).The current work explored the function of circ_0005203(aircTHSD4)in the malignancy and docetaxel(DTX)resistance of ***:circTHSD4 expression within PCa as well as matched non-carcinoma samples was measured through real time reverse transcription quantitative polymerase chain reaction(RT-qPCR).In addition,a subcellular fraction assay was conducted to determine circTHSD4 subcellular localization within PCa *** addition,we performed a Western blot(WB)assay to detect high *** A2 protein(HMGA2)***,functional associations of two molecules were investigated through dual luciferase reporter *** Counting Kit(CCK)-8,colony formation together with Transwell assay was conducted to assess malignant phenotypes of PCa cells,whereas flow cytometry was performed to determine cell ***,a xenograft mouse model was constructed to verify the effect of circTHSD4 on the carcinogenesis of PCa ***:According to RT-qPCR results,circTHSD4 was up-regulated within PCa tissues and cells,which predicted the dismal prognostic outcome of PCa ***4 silencing within PCa cells markedly suppressed cell growth,migration,and colony ***4 silencing remarkably elevated PCa cell apoptosis and carcinogenesis within the xenograft ***,circTHSD4 silencing enhanced docetaxel(DTX)sensitivity in PCa ***,we demonstrated that circTHSD4 modulated the malignancy of PCa cells by regulating HMGA2 expression through sponging miR ***:Together,our findings suggest that cirCTHSD4 overexpression could promote the malignant phenotype and DTX resistance in PCa through the regulation of the miR 203/HMGA2 axis.

关键词： circTHSD4 Docetaxel resistance Prostate cancer miR-203 HMGA2

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Emergence mechanisms of group consensus in social networks

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Frontiers of Engineering Management 2024年第2期11卷 362-368页

作者： Min WANG Zi-Ke zhang College of Media and International Culture Zhejiang UniversityHangzhou 310058China Research Center for Digital Communication Zhejiang UniversityHangzhou 310058China

Reaching consensus within larger social network groups has emerged as a pivotal concern in the digital age of *** article redefines group consensus as the emergence of collective intelligence resulting from self-organizing actions and interactions of individuals within a social network *** our exploration of extant research on group consensus,we illuminate two frequently underestimated,yet noteworthy facets:Dynamism and *** contrast to the conventional perspective of consensus as a mere outcome,we perceive it as an ongoing,dynamic *** process encompasses self-organized communication and interaction among group members,collectively guiding the group towards cognitive convergence and viewpoint ***,it is imperative to redirect our focus from the outcomes of group interactions to an examination of the relationships and processes underpinning consensus formation,thus elucidating the mechanisms responsible for the generation of group *** amalgamation of cognitive contexts and accurate simplification of real-world scenarios for simulation and experimental analysis offers a pragmatic operational *** study contributes novel theoretical underpinnings and quantitative insights for establishing and sustaining group consensus within the realm of engineering management ***,it holds substantial importance for advancing the broader research landscape pertaining to social consensus.

关键词： group consensus social network collective intelligence

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Effects of fluid therapy combined with a preoperative glucose load regimen on postoperative recovery in patients with rectal cancer

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2662-2670页

作者： Lv-Chi Xia Ke zhang Chuan-Wen Wang Department of Emergency Medicine Jiujiang First People's HospitalJiujiang 332000Jiangxi ProvinceChina

BACKGROUND Patients with rectal cancer undergoing radical resection often have poor post-operative recovery due to preoperative fasting and water deprivation and the removal of diseased tissue,and have a high risk of ***,it is of great significance to apply appropriate rehydration regimens to patients un-dergoing radical resection of rectal cancer during the perioperative period to improve the postoperative outcomes of *** To analyze the effects of goal-directed fluid therapy(GDFT)with a preoperative glucose load regimen on postoperative recovery and complications in patients undergoing radical resection for rectal *** Patients with rectal cancer who underwent radical resection(n=184)between January 2021 and December 2023 at our hospital were randomly divided into either a control group or an observation group(n=92 in each group).Both groups received a preoperative glucose load regimen,and routine fluid replacement and GDFT were additionally implements in the control and observation groups,*** operative conditions,blood levels of lactic acid and inflammatory markers,postoperative recovery,cognitive status,hemodynamic indicators,brain oxygen metabolism,and complication rates were compared between the *** The colloidal fluid dosage,total infusion,and urine volume,as well as time to first exhaust,time to food intake,and postoperative length of hospital stay,were lower in the observation group(P0.05).Compared with the control group,in the ob-servation group the lactic acid level was lower immediately after the surgery(P<0.05);the Mini-Mental State Examination score was higher on postoperative day 3(P<0.05);the pulse pressure variability(PPV)was lower at 30 min after pneumoperitone

关键词： Radical resection of rectal cancer Goal-directed fluid therapy Preoperative glucose load Cognitive condition Complication

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Multi-Time Scale Optimal Scheduling of a Photovoltaic Energy Storage Building System Based on Model Predictive Control

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Energy Engineering 2024年第4期121卷 1067-1089页

作者： Ximin Cao Xinglong Chen He Huang Yanchi zhang Qifan Huang School of Electrical Engineering Shanghai DianJi UniversityShanghai201306China

Building emission reduction is an important way to achieve China’s carbon peaking and carbon neutrality *** at the problem of low carbon economic operation of a photovoltaic energy storage building system,a multi-time scale optimal scheduling strategy based on model predictive control(MPC)is proposed under the consideration of load ***,load optimization is achieved by controlling the charging time of electric vehicles as well as adjusting the air conditioning operation temperature,and the photovoltaic energy storage building system model is constructed to propose a day-ahead scheduling strategy with the lowest daily operation ***,considering inter-day to intra-day source-load prediction error,an intraday rolling optimal scheduling strategy based on MPC is proposed that dynamically corrects the day-ahead dispatch results to stabilize system power fluctuations and promote photovoltaic ***,taking an office building on a summer work day as an example,the effectiveness of the proposed scheduling strategy is *** results of the example show that the strategy reduces the total operating cost of the photovoltaic energy storage building system by 17.11%,improves the carbon emission reduction by 7.99%,and the photovoltaic consumption rate reaches 98.57%,improving the system’s low-carbon and economic performance.

关键词： Load optimization model predictive control multi-time scale optimal scheduling photovoltaic consumption photovoltaic energy storage building

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