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A Survey of Knowledge Graph Construction Using machine Learning

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 225-257页

作者： Zhigang Zhao xiong Luo maojian Chen Ling ma School of Computer and Communication Engineering University of Science and Technology BeijingBeijing100083China Shunde Innovation School University of Science and Technology BeijingFoshan528399China Beijing Key Laboratory of Knowledge Engineering for materials Science Beijing100083China

Knowledge graph(KG)serves as a specialized semantic network that encapsulates intricate relationships among real-world entities within a structured *** framework facilitates a transformation in information retrieval,transitioning it from mere string matching to far more sophisticated entity *** this transformative process,the advancement of artificial intelligence and intelligent information services is ***,the role ofmachine learningmethod in the construction of KG is important,and these techniques have already achieved initial *** article embarks on a comprehensive journey through the last strides in the field of KG via machine *** a profound amalgamation of cutting-edge research in machine learning,this article undertakes a systematical exploration of KG construction methods in three distinct phases:entity learning,ontology learning,and knowledge ***,a meticulous dissection of machine learningdriven algorithms is conducted,spotlighting their contributions to critical facets such as entity extraction,relation extraction,entity linking,and link ***,this article also provides an analysis of the unresolved challenges and emerging trajectories that beckon within the expansive application of machine learning-fueled,large-scale KG construction.

关键词： Knowledge graph(KG) semantic network relation extraction entity linking knowledge reasoning

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棉花秸秆中棉酚的危害及其脱毒技术研究进展

饲料研究 2024年第7期47卷 141-145页

作者：任省涛范瑞婷莫改敬王岩师勇强马雄风棉花生物育种与综合利用全国重点实验室河南师范大学基地/河南师范大学生命科学学院河南新乡453007 河南科技学院河南新乡453000 郑州大学环境与生态学院河南郑州450000 中国农业科学院棉花研究所河南安阳455000

棉酚是棉花等锦葵科植物自然产生的黄色多酚类化合物,主要存在于棉花的根、茎、叶和种子内。棉酚具有动物毒性,动物长时间摄入会在体内蓄积引发中毒,造成动物繁殖性能下降、器官病变甚至死亡等。我国新疆棉花产量巨大,棉花产量约占全国... 详细信息

棉酚是棉花等锦葵科植物自然产生的黄色多酚类化合物,主要存在于棉花的根、茎、叶和种子内。棉酚具有动物毒性,动物长时间摄入会在体内蓄积引发中毒,造成动物繁殖性能下降、器官病变甚至死亡等。我国新疆棉花产量巨大,棉花产量约占全国的80%以上。棉花收获后,产生的棉花秸秆大多直接粉碎还田,造成了极大的资源浪费。棉花秸秆富含粗蛋白、纤维素、半纤维素和木质素等,与普通农作物秸秆营养成分相当,但其棉酚含量超标限制了棉花秸秆饲料化的应用,如何实现棉酚的高效和低成本脱毒成为决定棉花秸秆饲料化的关键因素。文章归纳了棉酚的结构、性质、毒性、脱毒技术以及脱毒机制,为棉花秸秆饲料化利用提供参考。

关键词：棉花秸秆棉酚脱毒机制

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宽分布聚乙烯管材树脂结构与性能差异性

塑料工业 2024年第5期52卷 124-128,168页

作者：郎学彬武志鹏唐文睿马雄韩向艳王长全钱建华胡跃鑫辽宁石油化工大学石油化工学院辽宁抚顺113001 抚顺石化公司烯烃厂辽宁抚顺113004

本文采用高温凝胶渗透色谱(GPC)、差示扫描量热仪(DSC)、万能拉伸试验机、冲击试验机和动态力学分析仪(Dma)等研究了Hostalen(两釜串联)和Hostalen ACP(三釜串联)淤浆聚合工艺制备的宽分布聚乙烯管材树脂GC1和GC2结构与性能的差异性。... 详细信息

本文采用高温凝胶渗透色谱(GPC)、差示扫描量热仪(DSC)、万能拉伸试验机、冲击试验机和动态力学分析仪(Dma)等研究了Hostalen(两釜串联)和Hostalen ACP(三釜串联)淤浆聚合工艺制备的宽分布聚乙烯管材树脂GC1和GC2结构与性能的差异性。结果表明,三釜串联生产的GC2平均分子量更大,分子量分布更宽,高分子量级分(重均分子量M_(W)>10^(6))相对含量更高且共聚单体的含量更高。同时,GC2还具有更高的拉伸强度和冲击强度,耐蠕变性能更优异,高剪切速率下具有更好的加工流动性。

关键词：聚乙烯管材树脂淤浆聚合工艺力学性能

基体性质对HDPE/SEBS共混物脆韧性转变的影响——验证Leibler增韧模型

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塑料工业 2024年第8期52卷 130-135页

作者：武志鹏郎学彬马雄唐文睿许凌子韩向艳胡跃鑫陈冬梅辽宁石油化工大学石油化工学院辽宁抚顺113001 中国石油天然气股份有限公司抚顺石化分公司研究院辽宁抚顺113001

为了研究高密度聚乙烯(HDPE)基体性质对共混物脆-韧转变的影响,本文通过熔融共混的方法制备了苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物(SEBS)/HDPE共混物,利用扫描电子显微镜观察了分散相的粒子尺寸及分布,明确了基体性质与临界粒子间距(ID_c... 详细信息

为了研究高密度聚乙烯(HDPE)基体性质对共混物脆-韧转变的影响,本文通过熔融共混的方法制备了苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物(SEBS)/HDPE共混物,利用扫描电子显微镜观察了分散相的粒子尺寸及分布,明确了基体性质与临界粒子间距(ID_c)之间的定量关系。结果表明,随着基体HDPE熔体质量流动速率的减小,共混物发生脆-韧转变时需要的临界弹性体质量分数越小,分散相SEBS的粒子尺寸越小,越有利于共混物脆-韧转变的发生。同时,聚合物共混物的脆-韧转变与基体材料断裂强度(σ_(B))、屈服强度(σ_(Y))有很大的关系,(σ_(B)/σ_(Y))^(2)越大,ID_(c)越大,共混物的脆-韧转变越容易发生,验证了Leibler增韧模型的正确性,并通过线性拟合得到相邻两个微裂纹平均距离(ξ*)和系数(C)。

关键词：高密度聚乙烯苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物脆-韧转变临界粒子间距

A New Buck-Based Configuration AC Chopper Voltage Conditioner

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Journal of Systems Engineering and Electronics 2001年第2期12卷 36-43页

作者： Tang Fuliang, xiong Youlun & ma Jianfeng Huazhong University of Science and Technology, Wuhan 430074, P. R. China Huazhong University of Science and Technology Wuhan 430074 P. R. China

This paper presents a new AC chopper voltage conditioner, which can generate high quality sinusoidal waveforms with adjustable amplitudes. The circuit structure, operation principle, and control mode are analyzed in detail, the system essentially consisting of an equal duty cycle modulation AC voltage buck chopper and a voltage polarity change H-bridge, a full-wave rectifier, to perform tightly closed-loop control of the AC chopper voltage condtioner, a digital controller on a new converter model has been developed. The controller has very well dynamic response. To evaluate the new circuit and proposed control scheme, a 5kW conditioner is developed and the experimental results demonstrate that the system has good performances.

关键词： Voltage conditioner Equal duty cycle modulation Power supply.

Roughness characterization and shearing dislocation failure for rock-backfill interface

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International Journal of Minerals,Metallurgy and materials 2024年第6期31卷 1167-1176页

作者： Meifeng Cai Zhilou Feng Qifeng Guo xiong Yin Minghui ma Xun Xi Key Laboratory of High-Efficient Mine and Safety of Metal Mines of Ministry of Education Beijing 100083China Key Laboratory of Urban and Underground Space Engineering University of Science and Technology BeijingBeijing 100083China Shandong Gold Group Co LtdJinan 250102China

Shearing dislocation is a common failure type for rock–backfill interfaces because of backfill sedimentation and rock strata movement in backfill mining *** paper designed a test method for rock–backfill shearing *** digital image techno-logy and three-dimensional(3D)laser morphology scanning techniques,a set of 3D models with rough joint surfaces was ***,the mechanical behavior of rock–backfill shearing dislocation was investigated using a direct shear *** effects of interface roughness on the shear–displacement curve and failure characteristics of rock–backfill specimens were *** 3D fractal dimen-sion,profile line joint roughness coefficient(JRC),profile line two-dimensional fractal dimension,and the surface curvature of the frac-tures were *** correlation characterization of surface roughness was then analyzed,and the shear strength could be measured and calculated using *** results showed the following:there were three failure threshold value points in rock–backfill shearing dis-location:30%–50%displacement before the peak,70%–90%displacement before the peak,and 100%displacement before the peak to post-peak,which could be a sign for rock–backfill shearing dislocation *** surface JRC could be used to judge the rock–backfill shearing dislocation failure,including post-peak sliding,uniform variations,and gradient change,corresponding to rock–backfill disloca-tion failure on the field *** research reveals the damage mechanism for rock–backfill complexes based on the free joint surface,fills the gap of existing shearing theoretical systems for isomerism complexes,and provides a theoretical basis for the prevention and control of possible disasters in backfill mining.

关键词： rock–backfill roughness correlation characterization shearing dislocation interface failure

Multiple bilateral and symmetric C1-2 ganglioneuromas: A case report

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World Journal of Clinical Cases 2022年第31期10卷 11549-11554页

作者： Shuang Wang Jun-xiong ma Liang Zheng Shao-Tong Sun Liang-Bi Xiang Yu Chen Department of Orthopedics General Hospital of Northern Theater CommandShenyang 110006Liaoning ProvinceChina

BACKGROUND Ganglioneuromas are rare tumors of the sympathetic nervous system that originate from neural crest *** the cervical spine has rarely been reported as a site for ganglioneuroma,we present a case report on this uncommon *** SUMmaRY A 34-year-old male presented with a 4-month history of progressive paralysis of both upper limbs along with an unsteady *** touch sensitivity of both hands was reduced,and there was conspicuously high muscle tonus in his upper and lower limbs,along with hyperactive physiological reflection and deep *** resonance imaging showed several nodules around the C2-7 intervertebral foramena,among which the masses lying between C1 and C2 were obviously bilaterally compressing the spinal *** posterior decompression was performed without fixation and the tumors in the upper cervical spine were removed intact,with rapid relief of *** pathological diagnosis was *** Multiple and bilateral ganglioneuroams are a rare occurrence in the cervical *** this case report,timely resection of the neoplasms around C1 and C2 resulted in spinal cord decompression,with rapid relief of symptoms and a good *** the current case,we are aware of only seven such cases in the literature,of which four arose from Japan,one from China,and one from *** suppose that ethnicity and geographic associations with this rare disease presentation may be an aspect for future consideration and investigation.

关键词： Ganglioneuroma Cervical cord Dumbbell tumor Symmetric Surgery Case report

Mechanical analysis of the femoral neck dynamic intersection system with different nail angles and clinical applications

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World Journal of Clinical Cases 2023年第20期11卷 4814-4823页

作者： Ying Wang Jian-xiong ma Hao-Hao Bai Bin Lu Lei Sun Hong-Zhen Jin Xin-Long ma Orthopaedics Institute Tianjin HospitalTianjin UniversityTianjin 300050China

BACKGROUND The femoral neck dynamic intersection system(FNS)is mechanically more stable than other internal fixation *** studies have confirmed that the structural design of FNS has good biomechanical properties in European and American ***,whether the suitability of the FNS's 130°main nail angle design for Asian populations has been thoroughly investigated remains *** To compare the biomechanical stability differences among different main nail angles of the FNS in the treatment of femoral neck fractures in Asian *** Computed tomography data of the femur of healthy adult male volunteers were imported into Mimics software to create a three-dimensional model of the *** model was adapted to the curve using Geomagic software and imported into Solidworks software to construct the Pauwels I femoral neck fracture model and design the FNS internal fixation model using different main nail ***,the models were assembled with the FNS fracture model and meshed using the preprocessing Hypermesh ***,they were imported into Abaqus software to analyze and evaluate the biomechanical effects of different angles of the FNS main nail on the treatment of femoral neck *** The peak displacement of the proximal femur under different angles of FNS fixation under stress was 7.446 millimeters in the 120°group and 7.416 millimeters in the 125°group;in the 130°,135°,and 140°FNS fixation groups,the peak displacement was 7.324 millimeters,8.138 millimeters,and 8.246 millimeters,*** the 120°and 125°FNS fixation groups,the maximum stresses were concentrated at the main nail and the anti-rotation screw,which intersected the fracture line of the femur neck,resulting in peak stresses of 200.7 MPa and 138.8 MPa,*** stresses of 208.8 MPa,219.8 MPa,and 239.3 MPa were observed on the angular locking plate distal to the locking screw in the 130°,135°,and 140°fixation ***

关键词： Femoral neck dynamic intersection system Biomechanics Three-dimensional reconstruction Nail angle Finite element analysis Stress

A Metabolic-associated Nomogram Predicts Recurrence Survival of Thyroid Cancer

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Current Medical Science 2021年第5期41卷 1004-1011页

作者： Zi-han XI Xian-xiong ma Heng-yu CHEN Yuan-hang YU Lei LI Tao HUANG department of Breast and Thyroid Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Depcirtment of Gastrointestinal Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Pancreatic Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China NHC Key Laboratory of Hormones and Development Tianjin Institute of EndocrinologyTianjin Medical University Chu Hsien-I Memorial HospitalTianjin 300134China

Objective:Various studies have suggested that metabolic genes play a significant role in papillary thyroid cancer(PTC).The current study aimed to identify a metabolic signature related biomarker to predict the prognosis of patients with ***:We conducted a comprehensive analysis on the data obtained from the Cancer Genome Atlas(TCGA)*** correlation between survival result and metabolic genes was evaluated based on the univariate Cox analyses,least absolute shrinkage and selection operator(LASSO)and multivariate Cox *** performance of a 7-gene signature was assessed according to Kaplan-Meier and receiver operating characteristic(ROC)*** Cox regression analysis was adopted to unearth clinical factors related to the recurrence free survival(RFS)of patients with ***,a prognostic nomogram was developed based on risk score,cancer status and cancer width to improve the prediction for RFS of PTC ***:Seven metabolic genes were used to establish the prognostic *** ROC curve and C-index exhibited high value in training,testing and the whole TCGA *** established nomogram,incorporating the 7-metabolic gene signature and clinical factors,was able to predict the RFS with high *** 7-metabolic gene signature-based nomogram had a good performance to predict the RFS of patients with ***:Our study identified a 7-metabolic gene signature and established a prognostic nomogram,which were useful in predicting the RPS of PTC.

关键词： signature metabolism papillary thyroid cancer recurrence free survival nomogram