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Federated Learning with Privacy-preserving and Model IP-right-protection

Machine Intelligence Research 2023年第1期20卷 19-37页

作者： Qiang Yang Anbu Huang Lixin Fan Chee Seng Chan jian han lim Kam Woh Ng Ding Sheng Ong Bowen Li WeBank Shenzhen 518057China Hong Kong University of Science and Technology Hong Kong 999077China University of Malaya Kuala Lumpur 50603Malaysia University of Surrey Guildford GU27XHUK University of Aberystwyth Wales SY233DDUK Shanghai Jiao Tong University Shanghai 200240China

In the past decades,artificial intelligence(AI)has achieved unprecedented success,where statistical models become the central entity in ***,the centralized training and inference paradigm for building and using these models is facing more and more privacy and legal *** bridge the gap between data privacy and the need for data fusion,an emerging AI paradigm feder-ated learning(FL)has emerged as an approach for solving data silos and data privacy *** on secure distributed AI,feder-ated learning emphasizes data security throughout the lifecycle,which includes the following steps:data preprocessing,training,evalu-ation,and *** keeps data security by using methods,such as secure multi-party computation(MPC),differential privacy,and hardware solutions,to build and use distributed multiple-party machine-learning systems and statistical models over different data *** data privacy concerns,we argue that the concept of“model”matters,when developing and deploying federated models,they are easy to expose to various kinds of risks including plagiarism,illegal copy,and *** address these issues,we introduce FedIPR,a novel ownership verification scheme,by embedding watermarks into FL models to verify the ownership of FL models and protect model intellectual property rights(IPR or IP-right for short).While security is at the core of FL,there are still many articles re-ferred to distributed machine learning with no security guarantee as“federated learning”,which are not satisfied with the FL definition supposed to *** this end,in this paper,we reiterate the concept of federated learning and propose secure federated learning(SFL),where the ultimate goal is to build trustworthy and safe AI with strong privacy-preserving and *** provide a com-prehensive overview of existing works,including threats,attacks,and defenses in each phase of SFL from the lifecycle perspective.

关键词： Federated learning privacy-preserving machine learning security decentralized learning intellectual property protection

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Mechanical joint performances of friction self-piercing riveted carbon fiber reinforced polymer and AZ31B Mg alloy

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Journal of Magnesium and Alloys 2022年第12期10卷 3367-3379页

作者： Yuan Li Yong Chae lim jian Chen Jiheon Jun Zhili Feng Materials Science and Technology Division Oak Ridge National LaboratoryOak RidgeTN 37831USA

Carbon fiber reinforced polymer(CFRP) and AZ31B Mg alloy were joined by the friction self-piercing riveting(F-SPR) with different steel rivet shank sizes. With the increase of rivet shank size, lap shear fracture load and mechanical interlock distance increased. Ultrafine grains were formed at the joint in AZ31B as a result of dynamic recrystallization, which contributed to the higher hardness. Fatigue life of the CFRP-AZ31B joint was studied at various peak loads of 0.5, 1, 2, and 3 kN and compared with the resistance spot welded AZ31B-AZ31B from the open literature. The fatigue performance was better at higher peak load(>2 kN) and comparable to that of resistance spot welding of AZ31B to AZ31B at lower peak loads(<1 kN). From fractography, the crack initiation for lower peak load(<1 kN) case was observed at the fretting positions on the top and bottom surfaces of AZ31B sheet. When peak load was increased, fretting between the rivet and the top of AZ31B became more dominant to initiate a crack during fatigue testing.

关键词： Friction self-piercing riveting Magnesium alloy Carbon fiber reinforced polymer Dynamic recrystallization Fatigue life Crack initiation

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Elastic catenary cable element considering frictional slip effect

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Science China(Technological Sciences) 2012年第6期55卷 1489-1495页

作者： CAI jianGuo lim James FENG jian XU YiXiang WANG Kai Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education Southeast UniversityNanjing 210096China National Prestress Engineering Research Center Southeast UniversityNanjing 210096China School of Planning Architecture and Civil EngineeringQueen's University Belfast BT95AGUK Department of Civil Engineering Strathclyde UniversityGlasgow G128QQUK

Conventional analysis methods of cable structures do not consider sliding of cables inside the joint,which may lead to inaccuracy of the theoretical behavior of the *** order to develop an effective method for cable sliding,a two-node cable element based on the analytical solution for an elastic catenary was *** cable sliding stiffness and the effect of friction were *** validate the proposed numerical method,analyses of two examples given in the literature were *** results demonstrated that the method given in this paper is accurate and effective,and can take into account cable sliding in cable *** addition,it was shown that the effect of cable sliding on the behavior of cable structures is *** was also shown that the friction at the support hampers the flow of the cable force,leading to unequal cable tensions on both sides of the support.

关键词： cable elastic catenary friction cable sliding nonlinear analysis

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Repeated exposure to moxa-burning smoke: its acute and chronic toxicities in rats

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Journal of Traditional Chinese Medicine 2018年第1期38卷 67-75页

作者： han Li Liu Changxi Liu Ping Hu Hai Yang Jia Cai Hong lim Minyee Zhu Maoxiang Pan Xiujie Huang jian Cui Yingxue Lao Lixing Zhao Baixiao Shool of Chinese medicine Beijing University of Chinese Medicine Healthcare Management Center Beijing Electric Power Hospital Department of Acupunture Beijing Hospital of Acupuncture and Moxibustion Shool of Acupuncture-Moxibustion and Tuina Beijing University of Chinese Medicine Department of Traditional Chinese Medicine Chongqing Yubei District Hospital of Traditional Chinese Medicine Institute of Radiation Medicine China Academy of Military Medical Science Department of Acupunture Beijing Dong Fang Hospital Department of Acupunture Beijing Hospital of Traditional Chinese Medicine School of Chinese Medicine The University of Hong Kong

OBJECTIVE： To assess toxicities of the air in Chinese medicine clinics polluted by moxa-burning smoke due to moxibustion-derived burning products （MBP）. METHODS： Both acute and chronic toxicity studies were conducted. For the acute toxicity study, five groups of Wistar rats （n = 16/group, male： female = 1 ： 1） were exposed to five different concentrations （95%, 90%, 85%, 80% and 75%, respectively） of MBP for 2 h. For the chronic toxicity study, another three groups of male rats （n = 21/group） were ex- posed to MBP in three concentrations （10%, 40% and 70%, respectively） and one control group ex- posed to clean air 20 min/d for 144 d. Routine ex- aminations were performed and analyzed by analy- sis of variance and dose-response relationship. RESULTS： In the acute toxicity study, the number of dead rats in the 95%, 90%, 85%, 80% and 75% groups were 16, 13, 7, 6 LDS0 of 86.274% after or and 3, respectively, with during the 2 h exposure. In the chronic toxicity study, MBP exposure induced a decline in activity of the rats. Rats in the 10% group showed no signs of toxicity, while those in the 40% MBP group showed toxicity effects on the body weights （P 〈 0.05） and lung. Rats in the 70% MBP group also presented with reversible damage in the blood coagulation system （P 〈 0.05）. CONCLUSION： Exposure to 10% MBP, which is equivalent to 27.45 mg/m^3 was under the critical threshold for male rats＇safety. Exposure to MBP above that limit induced lung damage. MBP in clinics need to be reduced to a safe level with enhanced ventilation.

关键词： Smoke Moxibustion Environmental exposure Toxicity tests

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Portal of Juglandaceae:A comprehensive platform for Juglandaceae study

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Horticulture Research 2020年第1期7卷 2280-2287页

作者： Wenlei Guo Junhao Chen jian Li jianqin Huang Zhengjia Wang Kean-Jin lim State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityLin’an District311300 HangzhouZhejiangChina

Juglandaceae species are plants of great economic value and have been cultivated,domesticated,and utilized by human society for a long *** edible,nutrient-rich nuts and tough,durable wood have attracted the attention of botanists and *** the advent of the genomics era,genome sequencing of the Juglandaceae family has been greatly accelerated,and a large amount of data has been *** this paper,we introduce the Portal of Juglandaceae(PJU),a tool to bring all these data *** PJU contains genomes,gene-coding sequences,protein sequences,various types of annotation information,expression data,and miRNA data,which are configured with BLAST,JBrowse,and our self-developed synteny analysis *** PJU has a user-friendly and straightforward interface that performs a variety of query tasks with a few simple *** the future,we hope that the PJU will serve as a hub for the study of the Juglandaceae family.

关键词： Portal straight tough

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High heat loading performance of actively cooled W/Cu FGM-based components

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International Journal of Minerals,Metallurgy and Materials 2011年第4期18卷 467-471页

作者： Zhang-jian Zhou Jun Tan Dan-dan Qu Hua Li Young-jin yum Hyun-woo lim School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Electronic Engineering Institute Hefei 230037 China School of Mechanical ＆ Automotive Engineering University of Ulsan Ulsan 680-749 Korea

A functionally graded material-based actively water-cooled tungsten-copper mockup with a dimension of 30 mm×30 mm×25 mm was designed and fabricated by infiltration-brazing *** thicknesses of the pure W layer and W/Cu graded layer were 2 and 3 mm,*** heat flux tests were performed on the mockup using an e-beam *** is no damage occurring on the joint after heat loading at 5 MW/*** temperature on the pure W surface is less than 500°C after irradiation for 100 s at 5 MW/m2,while the temperature on the brazing seam/copper surface is around 200°C.

关键词： tungsten copper functionally graded materials thermal load

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Study of galvanic corrosion and mechanical joint properties of AZ31B and carbon-fiber–reinforced polymer joined by friction self-piercing riveting

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Journal of Magnesium and Alloys 2022年第2期10卷 434-445页

作者： Yong Chae lim Jiheon Jun Donovan N.Leonard Yuan Li jian Chen Michael P.Brady Zhili Feng Materials Science and Technology Division Oak Ridge National LaboratoryOne Bethel Valley RoadOak RidgeTN 37831USA

A new testing methodology was developed to quantitively study galvanic corrosion of AZ31B and thermoset carbon-fiber–reinforced polymer spot-joined by a friction self-piercing riveting ***-defined areas of AZ31B in the joint were exposed in 0.1 M NaCl solution over *** galvanic corrosion of AZ31B was observed as exposure time *** measured volume loss was converted into corrosion current that was at least 48 times greater than the corrosion current of AZ31B without galvanic *** percent of the mechanical joint integrity was retained for corroded F-SPR joints to 200 h and then decreased because of the massive volume loss of AZ31B。

关键词： Multi-material joining Carbon fiber–reinforced polymer AZ31B Friction self-piercing riveting Galvanic corrosion Mechanical joint strength

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Influence of storage duration and processing on chromatic attributes and flavonoid content of moxa floss

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Journal of Integrative Medicine 2016年第1期14卷 69-76页

作者： Min Yee lim jian Huang Bai-xiao Zhao Hui-qin Zou Yong-hong Yan School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese Medicine Library Beijing University of Chinese Medicine School of Chinese Materia Medica Beijing University of Chinese Medicine

OBJECTIVE： Moxibustion is an important traditional Chinese medicine therapy using heat from ignited moxa floss for disease treatment. The purpose of the present study is to establish a reproducible method to assess the color of moxa floss, discriminate the samples based on chromatic coordinates and explore the relationship between chromatic coordinates and total flavonoid content （TFC）. METHODS： Moxa floss samples of different storage years and production ratios were obtained from a moxa production factory in Henan Province, China. Chromatic coordinates （L＊, a＊ and b＊） were analyzed with an ultraviolet-visible spectrophotometer and the chroma （C＊） and hue angle （h~） values were calculated. TFC was determined by a colorimetric method. Data were analyzed with correlation, principal component analysis （PCA）. RESULTS： Significant differences in the chromatic values and TFC were observed among samples of different storage years and production ratios. Samples of higher production ratio displayed higher chromatic characteristics and lower TFC. Samples of longer storage years contained higher TFC. Preliminary separation of moxa floss production ratio was obtained by means of color feature maps developed using L＊-a＊ or L＊-b＊ as coordinates. PCA allowed the separation of the samples from their storage years and production ratios based on their chromatic characteristics and TFC. CONCLUSION： The use of a colorimetric technique and CIELAB coordinates coupled with chemometrics can be practical and objective for discriminating moxa floss of different storage years and production ratios. The development of color feature maps could be used as a model for classifying the color grading of moxa floss.

关键词： moxa floss moxibustion color total flavonoid content quality control

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Acute Hepatitis of Unknown Origin in Children: Early Observations from the 2022 Outbreak

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Journal of Clinical and Translational Hepatology 2022年第3期10卷 522-530页

作者： Li-Ya Zhang Li-Su Huang Yu-hang Yue Rima Fawaz Joseph K.lim jian-Gao Fan Department of Infectious Disease Xinhua Children’s HospitalXinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina Section of Pediatric Gastroenterology and Hepatology Yale University School of MedicineNew HavenCTUSA Section of Digestive Diseases and Yale Liver Center Yale University School of MedicineNew HavenCTUSA Department of Gastroenterology Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina Shanghai Key Lab of Pediatric Gastroenterology and Nutrition ShanghaiChina

Recent reports of acute hepatitis of unknown origin in previously healthy children have been increasing *** main characteristics of the affected children were jaundice and gastrointestinal *** serum aminotransaminase levels were above 500 IU/L,with negative tests for hepatitis viruses A–*** 31 May 2022,the outbreak had affected over 800 children under the age of 16 years in more than 40 countries,resulting in acute liver failure in approximately 10%,including at least 21 deaths and 38 patients requiring liver *** was still no confirmed cause or causes,although there were several different working hypotheses,such as severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),adenovirus serotype 41,or SARS-CoV-2 superantigen-mediated immune cell ***,we review early observations of the 2022 outbreak which may inform diagnosis,treatment,and prevention in the context of an overlapping COVID-19 pandemic.

关键词： Hepatitis Acute liver failure Liver transplantation Pediatric Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) Adenovirus Causality

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Galvanic corrosion of AZ31B joined to dual-phase steel with and without Zn layer by ultrasonic and friction stir welding

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Journal of Magnesium and Alloys 2023年第2期11卷 462-479页

作者： Jiheon Jun Vineet V.Joshi Alasdair Crawford Vilayanur Viswanathan Donovan N.Leonard jian Chen Piyush Updadhyay Yong Chae lim Zhili Feng Oak Ridge National Laboratory Oak RidgeTNUSA Pacific Northwest National Laboratory RichlandWashingtonUSA

Galvanic corrosion of AZ31B joined with bare or Zn-coated DP590 steel by ultrasonic spot welding or linear friction stir welding was quantitatively studied by pre-defining anode and cathode in the lap joint samples. Corrosion volume and depth from Mg anode surfaces exposed to 0.1 M sodium chloride solution was analyzed as functions of cathode surface type and welding method. Characterization of as-welded joints was performed to identify any microstructural feature of the bonding zone that could impact galvanic corrosion *** modeling with modified user subroutine was conducted to simulate the progression of Mg corrosion in the same joint and electrode configurations used for the corrosion experiments. The experimental results indicated that Zn-coated cathode surface can reduce Mg galvanic corrosion significantly as galvanic polarization and cathodic current on Zn-coated surface remained relatively low for Mg in the weld *** modeling described the growth of Mg galvanic corrosion in a reasonable manner but showed limitation by underestimating the corrosion volume as it did not capture self-corrosion.

关键词： Mg alloy Zn coating Ultrasonic spot welding Friction stir welding Galvanic corrosion

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