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Application of machine learning to the Vs-based soil liquefaction potential assessment

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Journal of Mountain Science 2023年第8期20卷 2197-2213页

作者： SUI Qi-ru CHEN qin-huang WANG Dan-dan TAO Zhi-gang State Key Laboratory for GeoMechanics and Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 100083China

Earthquakes can cause violent liquefaction of the soil, resulting in unstable foundations that can cause serious damage to facilities such as buildings, roads, and dikes. This is a primary cause of major earthquake disasters. Therefore, the discrimination and prediction of earthquake-induced soil liquefaction has been a hot issue in geohazard research. The soil liquefaction assessment is an integral part of engineering practice. This paper evaluated a dataset of 435 seismic sand liquefaction events using machine learning algorithms. The dataset was analyzed using seven potential assessment parameters. Ten machine learning algorithms are evaluated for their ability to assess seismic sand liquefaction potential, including Linear Discriminant Analysis(LDA), Quadratic Discriminant Analysis(QDA), Naive Bayes(NB), KNearest Neighbor(KNN), Artificial Neural Network(ANN), Classification Tree(CT), Support Vector Machine(SVM), Random Forest(RF), e Xtreme Gradient Boosting(XGBoost), Light Gradient Boosting Machine(Light GBM). A 10-fold cross-validation(CV) method was used in the modeling process to verify the predictive performance of the machine learning models. The final percentages of significant parameters that influenced the prediction results were obtained as Cyclic Stress Ratio(CSR) and Shear-Wave Velocity( VS1) with 56% and 38%, respectively. The final machine learning algorithms identified as suitable for seismic sand liquefaction assessment were the CT, RF, XGBoost algorithms, with the RF algorithm performing best.

关键词： Seismic soil liquefaction Machine learning Assessment Liquefaction potential shear wave velocity

Coded Multicasting for Content Delivery over Predictable Time-Varying Satellite Communication Networks

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China Communications 2023年第6期20卷 339-367页

作者： Fan Xu Shuo Shao Meixia Tao qin huang Qifa Yan Xiaohu Tang Peng Cheng Laboratory ShenzhenGuangdong 518000China Department of Electronic Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Electronics and Information Engineering BeiHang UniversityBeijing 100191China School of Information Science and Technology Southwest Jiaotong UniversityChengduSichuan 611756China

With the development of astronautic technology, communication satellites now have a tremendous gain in both quantity and quality, and have already shown their capability on multi-functional converged communication other than telecommunication. Under this circumstance, increasing the transmission efficiency of satellite communication network becomes a top priority. In this paper, we focus on content delivery service on satellite networks, where each ground station may have prefetched some file fragments. We cast this problem into a coded caching framework so as to exploit the coded multicast gain for minimizing the satellite communication load. We first propose an optimization-based coded multicast scheme by considering the special property that the satellite network topology is predictable and timevariant. Then, a greedy based fast algorithm is proposed, which can tremendously reduce the computation complexity with a small loss in optimality. Simulation experiments conducted on two Walker constellation satellite networks show that our proposed coded multicast method can efficiently reduce the communication load of satellite networks.

关键词： satellite communication content delivery coded multicast greedy algorithm

Hemorrhagic transformation in patients with large-artery atherosclerotic stroke is associated with the gut microbiota and lipopolysaccharide

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Neural Regeneration Research 2024年第7期19卷 1532-1540页

作者： qin huang Minping Wei Xianjing Feng Yunfang Luo Yunhai Liu Jian Xia Department of Neurology Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Department of Neurology Peking University People’s HospitalBeijingChina Clinical Research Center for Cerebrovascular Disease of Hunan Province Central South UniversityChangshaHunan ProvinceChina National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina

Hemorrhagic transformation is a major complication of large-artery atheroscle rotic stroke(a major ischemic stro ke subtype)that wo rsens outcomes and increases *** of the gut microbiota is an important feature of stroke,and some specific bacteria and bacterial metabolites may contribute to hemorrhagic transformation *** aimed to investigate the relationship between the gut microbiota and hemorrhagic transformation in largearte ry atheroscle rotic stro *** observational retrospective study was *** May 2020 to September 2021,blood and fecal samples were obtained upon admission from 32 patients with first-ever acute ischemic stroke and not undergoing intravenous thrombolysis or endovascular thrombectomy,as well as 16 healthy *** with stro ke who developed hemorrhagic transfo rmation(n=15)were compared to those who did not develop hemorrhagic transformation(n=17)and with healthy *** gut microbiota was assessed through 16S ribosomal ribonucleic acid *** also examined key components of the lipopolysaccharide pathway:lipopolysaccharide,lipopolysaccharide-binding protein,and soluble *** observed that bacterial diversity was decreased in both the hemorrhagic transformation and non-hemorrhagic transfo rmation group compared with the healthy *** patients with ischemic stro ke who developed hemorrhagic transfo rmation exhibited altered gut micro biota composition,in particular an increase in the relative abundance and dive rsity of members belonging to the Enterobacteriaceae *** lipopolysaccharide and lipopolysaccharide-binding protein levels were higher in the hemorrhagic transformation group compared with the non-hemorrhagic transfo rmation ***,lipopolysaccharide-binding protein,and soluble CD14 concentrations were associated with increased abundance of Enterobacte ***,the role of the gut microbiota in hemorrhagic transformation was evaluated using

关键词： gut microbiota hemorrhagic transformation inflammation lipopolysaccharide stroke

Strong association of SLCIA1 and DPF3 gene variants with idiopathic male infertility in Han Chinese

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Asian Journal of Andrology 2017年第4期19卷 486-492页

作者： Shu-Yuan Liu Chang-Jun Zhang Hai-Ying Peng Hao Sun Ke-qin Lin Xiao-qin huang Kai huang Jia-You Chu Zhao-qing Yang Department of Medical Genetics Institute of Medical Biology Chinese Academy of Medical Sciences and Peking Union Medical College Kunming 650118 China Reproductive Medical Research Centre People's Hospital of Shiyan Shiyan 442000 China

Male infertility is a multifactorial syndrome encompassing a wide variety of disorders. In recent years, several genome-wide single-nucleotide polymorphism （SNP） association studies （GWAS） have been performed on azoospermia and/or oligozoospermia in different populations including two GWAS on nonobstructive azoospermia in China; however, the association of SNPs with idiopathic male infertility, especially asthenozoospermia and oligozoospermia, and their correlation with semen parameters are still not clear. To investigate genetic variants associated with idiopathic male infertility （asthenozoospermia, oligozoospermia, and oligoasthenozoospermia） in Chinese Han people, 20 candidate SNPs were selected from GWAS results and genotyped using the Sequenom MassARRAY assay. A total of 136 subfertile men and 456 healthy fertile men were recruited, rs6476866 in SLCIA1 （P = 1.919E-4, OR = 0.5905, 95% Ch 0.447-0.78） and rs10129954 in DPF3 （P = 0.0023, OR = 2.199, 95% Ch 1.311-3.689） were strongly associated with idiopathic male infertility. In addition, positive associations were observed between asthenozoospermia and rs215702 in LSM5 （P= 0.0016, OR = 1.479, 95% CI： 1.075-2.033） and between oligoasthenozoospermia and rs2477686 in PEXIO （P= 0.0011, OR = 2.935, 95% Ch 1.492-5.775）. In addition, six SNPs （rs215702 in LSMS, rs6476866 in SLCIA1, rs10129954 in DPF3, rs1801133 in MTHFR, rs2477686 in PEXIO, and rs10841496 in PED3A） were significantly correlated with semen quality alterations. Our results suggest that idiopathic male infertility in different ethnic groups may share the same mechanism or pathway. Cohort expansion and further mechanistic studies on the role of genetic factors that influence spermatogenesis and sperm progressive motility are suggested.

关键词： candidate SNPs Han Chinese idiopathic male infertility semen quality

Thermal cracking characteristics of n-decane in the rectangular and circular tubes

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Chinese Journal of Chemical Engineering 2019年第12期27卷 2876-2883页

作者： Zhiliang Lei Bin Liu qin huang Kuo He Zewei Bao Quan Zhu Xiangyuan Li School of Chemical Engineering Sichuan UniversityChengdu 610065China

To investigate the effect of regenerative cooling channel geometry on pyrolysis of endothermic hydrocarbon fuel,a series of supercritical pyrolysis experiments of n-decane in the rectangular and circular tubes were ***,sensitivity analysis of production of propylene and methane as well as CFD simulation were also *** results showed that gas yield and conversion in the circular tube with an inner diameter of 2 mm had a similar tendency with the one of 1.5 mm in inner *** conversion in the circular tube was much less than that in the rectangular tube at the same outlet *** heat sink of the rectangular tube at the same outlet temperature was larger than that of circular tubes,but the temperature at the corner of the rectangular tube was relatively *** to the experimental data of the test tubes,a correlation between the conversion and the temperature in the rectangular and circular tubes at the same outlet temperature was fitted,providing a reference for the design of regenerative cooling channels.

关键词： Hydrocarbons Supercritical fluid Pyrolysis Rectangular tube Circular tube

Secure personal data sharing in cloud computing using attribute-based broadcast encryption

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The Journal of China Universities of Posts and Telecommunications 2014年第6期21卷 45-51,77页

作者： FU Jing-yi huang qin-long MA Zhao-feng YANG Yi-xian Information Security Center Beijing University of Posts and Telecommunications National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing National Security Science and Technology Co. Ltd

The ciphertext-policy（CP） attribute-based encryption（ABE）（CP-ABE） emergings as a promising technology for allowing users to conveniently access data in cloud computing. Unfortunately, it suffers from several drawbacks such as decryption overhead, user revocation and privacy preserving. The authors proposed a new efficient and privacy-preserving attribute-based broadcast encryption（BE）（ABBE） named EP-ABBE, that can reduce the decryption computation overhead by partial decryption, and protect user privacy by obfuscating access policy of ciphertext and user＇s attributes. Based on EP-ABBE, a secure and flexible personal data sharing scheme in cloud computing was presented, in which the data owner can enjoy the flexibly of encrypting personal data using a specified access policy together with an implicit user index set. With the proposed scheme, efficient user revocation is achieved by dropping revoked user＇s index from the user index set, which is with very low computation cost. Moreover, the privacy of user can well be protected in the scheme. The security and performance analysis show that the scheme is secure, efficient and privacy-preserving.

关键词： data sharing ABBE ABE user revocation partial decryption privacy preserving

Conjecture on the Time Scales of Intramolecular Dynamics and Lyapunov Relaxation

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Chinese Physics Letters 1997年第5期14卷 336-339页

作者： XIE Xi-shun huang Xiao-qin ZHAO Mei-shan Department of Physics Southeast UniversityNanjing 210096 Department of Physics Nanjing Normal UniversityNanjing 210097 The James fianck Institute The University of ChicagoChicagoIllinois 60637U.S.A.

A dynamical study of intramolecular energy transfer in a realistic polyatomic model molecular system is *** the present study and dynamical information established in the previous research we make the conjecture that ... 详细信息

关键词： dynamical relaxation Lyapunov

Network Meta-analysis of Four Chinese Patent Medicines Combined with Angiotensin Converting Enzyme Inhibitors or Angiotensin Receptor Blockers in Early Diabetic Nephropathy Treatment

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World Journal of Traditional Chinese Medicine 2020年第1期6卷 51-60页

作者： Jing Zhang Jing Li Jia-qin huang Department of Nephropathy and Endocrine Disease Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina

The objective of the study is to systematically evaluate the efficacy of four Chinese patent medicines in combination with angiotensin-converting enzyme inhibitors/angiotensin receptor blockers (ACEI/ARB) in the treatment of early diabetic nephropathy (DN). Retrospectively, previously published randomized controlled trials (RCTs) of four different Chinese patent medicines combined with ACEI or ARB in the treatment of patients with early DN were searched overall from databases. The data were analyzed by R, Generate Mixed Treatment Comparisons and STATA softwares. A total of 78 RCTs were finally included. Network meta-analysis showed that the total effective rate of the Jinshuibao capsule-ACEI/ARB combination group and huangkui capsule-ACEI/ARB combination groups were better than the others;Jinshuibao capsule-ACEI/ARB combination group reduced the 24-h urinary protein excretion (24-h UTP), urine microalbumin excretion rate (UAER), serum creatinine (Scr), and glycosylated hemoglobin (HbAlc) values. The huangkui capsule-ACEI/ARB combination demonstrated a better reduction of (blood urea nitrogen [BUN]). Reduced incidences of adverse effects were only observed on treatment with Bailing capsule-ACEI/ARB combination. In early DN, combination of Jinshuibao capsule-ACEI/ARB provided the highest effective rate;moreover, it could reduce the24-h values of UTP, UAER, Scr, and HbAlc;huangkuai capsule-ACI/ARB combination group showed a good effect on reducing BUN. Bailing capsule-ACEI/ARB combination group had reduced the incidences of adverse reactions.

关键词： Angiotensin-converting enzyme inhibitors/angiotensin receptor blockers Chinese patent medicine drug combination early diabetic nephropathy network meta-analysis

Exploration of Clinical Regularity in Acupuncture for Apoplexy Sequelae Based upon ‘Traditional Chinese Medical Acupuncture-moxibustion Information Databank'

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Journal of Acupuncture and Tuina Science 2014年第3期12卷 133-140页

作者： Zhang Yi-ming huang qin-feng huang Guo-qi Hospital of Traditional Chinese Medicine Zhabei District Shanghai Research Institute of Acupuncture and Meridian

In review of acupuncture literature from 1949 to 2010, in accordance with the data in ‘Traditional Chinese Medical Acupuncture-moxibustion Information Databank', the accounting analysis was used for comprehensive analysis and regularity summery of acupuncture therapy for apoplexy sequelae. The results showed that Hegu(LI 4), Zusanli(ST 36), Quchi(LI 11), Jianyu(LI 15), Sanyinjiao(SP 6), Yanglingquan(GB 34), Lianquan(CV 23), and Waiguan(TE 5) were used at the highest frequency. In the therapeutic methods, acupuncture was used at the highest frequency, followed by scalp acupuncture, and simultaneous application of acupuncture and herbal medicine.

关键词： Acupuncture-moxibustion Therapy Stroke Complications Bibliometrics Evaluation Studies Databases,Bibliographic Traditional Chinese Medicine