检索结果-内蒙古大学图书馆

Dropout Graph Product for Improved Relationship Discovery Across Multiple Heterogeneous Graphs

IEEE ACCESS 2021年 9卷 106340-106351页

作者： lang, xuwen Lin, Yanbin Qiu, Dehong Huazhong Univ Sci & Technol Sch Software Engn Wuhan 430074 Peoples R China

Relationship discovery across multiple heterogeneous graphs has recently attracted considerable interest. A major challenge is how to fuse and utilize the structure and properties of multiple heterogeneous graphs complementarily to improve relationship discovery between graph pairs where there are only a few observed relationships. In this paper, we seek to solve the problem through label propagation on dropout graph product. We first map multiple heterogeneous graphs onto a single homogeneous graph through graph product. The internal structure and properties of each individual graphs, as well as the observed inter-graph relationships across multiple graphs are fused losslessly via assigning edge weights and encoding node vectors of the graph product. As a result, the complex problem of relationship discovery across multiple heterogeneous graphs is transformed into a simple problem of node classification on homogeneous graph product. However, the size of graph product increases quickly with the size and the number of factor graphs, which leads to low accuracy and high computational cost. Dropout is therefore introduced to address this problem, which is applied to label propagation on graph product. Finally, we combine the results of a set of label propagations on different dropout graph products using a product of experts model. The proposed approach is characterized by flexibility in defining graph product, good generalization ability, high accuracy, and efficient computation. The experiments on real-world datasets show that the proposed approach significantly improves relationship discovery across multiple heterogeneous graphs, obtaining better results on the benchmark datasets than the baseline approaches.

关键词： Kernel Fuses Periodic structures Tensors Licenses Computational efficiency Benchmark testing Multiple graph fusion multi-entity relationship discovery dropout graph product label propagation

来源：评论

学校读者我要写书评

暂无评论

Discovering Dependence across Traffic Data of Disparate Regions Using Multiscale Generalized Correlation 2018

Discovering Dependence across Traffic Data of Disparate Regi...

引用

6th International Conference on Information Technology - IoT and Smart City (ICIT)

作者： Qiu, Dehong Zhang, Pin Fang, Shaohong lang, xuwen Feng, Hao Huazhong Univ Sci & Technol Sch Software Engn Wuhan Hubei Peoples R China Wuhan Coll Sch Informat Engn Wuhan Hubei Peoples R China

ISBN: (纸本)9781450366298

Deciphering potential associations between the traffic data of disparate regions is of great importance to urban traffic management. However, as the traffic data is structured, temporal and often high-dimensional, many traditional dependence testing approaches are not directly applicable. In this paper, we propose a new approach to test dependence between traffic data of disparate regions based on distance Correlation (dCorr) and Multiscale Generalized Correlation (MGC). The distance matrix between the structured traffic data of disparate regions is defined, which yields a consistent test statistic for testing dependence of traffic data. We conduct experiments on the real and simulated datasets. The results of our experiments demonstrate that the new approach can capture the complex dependence between the structured traffic data of disparate regions. Simultaneously, it requires a small number of samples and is computationally efficient.

关键词： Traffic management network dependence graph distance distance correlation multiscale generalized correlation

来源：评论

学校读者我要写书评

暂无评论

The synthesis of an iron tailings-based geopolymer with synergistic electromagnetic wave consumption property

引用

ENVIRONMENTAL RESEARCH 2025年 268卷 120744页

作者： Wang, Tianyu Ning, xuwen Yang, lang Rao, Feng Jiang, Kaixi Fuzhou Univ Sch Mat Sci & Engn Fuzhou 350108 Fujian Peoples R China Fuzhou Univ Zijin Sch Geol & Min Fuzhou 350108 Fujian Peoples R China Fuzhou Univ Fujian Key Lab Green Extract & High Value Utilizat Fuzhou 350108 Fujian Peoples R China

In this study, combination of wave absorption materials with different loss mechanisms are added into iron ore tailings-blast furnace slag (IOT-BFS) based geopolymers. The employed materials are hollow glass microsphere (HGM), carbon nanotubes (CNT) and carbonyl iron powder (CIP). Microstructures of the geopolymers are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and concrete porous structure analyzer. Conductivity and electromagnetic absorption property of the geopolymers are measured by a conductivity tester and a vector network analyzer (VNA). As increasing the content of wave absorption materials, compressive strength of the geopolymer decreased from 60.5 to 33.8 MPa. Compared with geopolymers containing HGM and CNT, wave absorption band below -5 dB of the geopolymers with HGM and CIP was wider, particularly at frequencies below 7 GHz, due to the synergism of space and magnetic loss. Its absorption bandwidth with the reflection loss less than -5 dB reaches 15.6 GHz. This study gives a clue for preparation of geopolymers with satisfactory electromagnetic wave absorption properties in the utilization as construction materials.

关键词： Geopolymers Electromagnetic wave absorption Iron ore tailings Microstructure

来源：评论

学校读者我要写书评

暂无评论

A novel electromagnetic wave absorption geopolymer originated from iron tailings and blast furnace slag

引用

MATERIALS AND STRUCTURES 2025年第1期58卷 1-14页

作者： Ning, xuwen Yang, lang Rao, Feng Wang, Tianyu Wu, Shengping Huang, Hanhui Fuzhou Univ Zijin Sch Geol & Min Fuzhou 350108 Fujian Peoples R China Zhiyong Construct Grp Co Ltd Fuzhou 350800 Fujian Peoples R China Fuzhou Univ Fujian Key Lab Green Extract & High Value Utilizat Fuzhou 350108 Fujian Peoples R China State Key Lab Mineral Proc Beijing 102628 Peoples R China Fujian JiangXia Univ Sch Engn Fuzhou 350108 Fujian Peoples R China Zhongke Chengfa Fujian Construct Grp Co Ltd Nanping 354105 Fujian Peoples R China Coll Civil Engn Fujian ChuanZheng Commun Coll Fuzhou 350007 Fujian Peoples R China

In this work, a novel electromagnetic wave absorption geopolymer was created with efficient utilization of two solid wastes iron tailings and blast furnace slag, meanwhile the mechanism and impacts of iron tailings content, water-solid ratio and specimen thickness on their electromagnetic wave absorption and mechanical property were systematically investigated. It was found the pores, micro-cracks and unreacted particles in the specimens are benefitial for electromagnetic wave absorption but against to compressive strength, even though the compressive strength reaches 69.7 MPa with the iron tailings content 50% and water-solid ratio 0.4. The addition of iron tailings significantly enhances the electromagnetic wave absorption properties of the geopolymers, and increasing iron tailings content improves the number of pores, micro-cracks and the permeability of geopolymers. The electromagnetic wave absorption properties of the geopolymer initially increase and then decrease with the increase of specimen thickness and water-solid ratio. With an iron tailings content 70%, water-solid ratio 0.4 and thickness 30 mm, the effective absorption bandwidth (< -5 dB) was optimized to 10.44 GHz with a minimum reflection loss of -13.34 dB. A new mechanism for electromagnetic absorption in iron tailings has been proposed, in which the electromagnetic wave absorption of geopolymers is mainly dominated by magnetic loss and spatial propagation loss. This study provides higher competitiveness and comprehensive utilisation of iron tailings in the field of electromagnetic wave absorbing building materials, and has great potential for applications in military and other fields affected by high electromagnetic wave frequencies.

关键词： Iron tailings Geopolymers Microwave absorption Reflectivity

来源：评论

学校读者我要写书评

暂无评论

Preparation and properties of ceramic coated nitrogen-doped carbon coated SiOx anode materials for lithium-ion batteries

引用

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 2025年第5期131卷 1-7页

作者： Zhou, Zhengyang Wen, Lijun Jin, Chenxin Hong, Junjie Liu, xuwen Xu, Guojun Sun, Fugen Li, Yong Zhou, lang Yue, Zhihao Nanchang Univ Inst Photovolta Nanchang 330031 Peoples R China Jiangxi Prov Key Lab Solar Photovolta Nanchang 330031 Peoples R China NCU GQC Inst PV HE ES Technol Gongqing 332020 Peoples R China Nanchang Univ Sch Phys & Mat Sci Nanchang 330031 Peoples R China

Nitrogen doping and carbon coating were identified to be two effective ways to alleviate the problems of silicon raw materials in our previous work. Building upon the foundation of this, a ceramic coating technique is introduced to further enhance the physical and electrochemical characteristics of nitrogen-doped carbon-coated silicon monoxide (N-doped SiOx@C) materials. This study explores the application of alumina (Al2O3) and boehmite (AlOOH) powders as coating on the surface of N-doped SiOx@C materials to assess their effects. The outcomes demonstrate that AlOOH coating surpasses Al2O3 coating in terms of wettability and liquid absorption capacity, leading to a reduction in the contact angle from 28 degrees to 20 degrees. Following 100 cycles at a current density of 1.05 Ag-1, the capacity retention rate of AlOOH coated N-doped SiOx@C materials reaches 98.4%, whereas uncoated materials maintain a capacity retention rate of 91.4%. Notably, AlOOH coating significantly enhances the electrochemical performance of N-doped SiOx@C materials.

关键词： Ceramic coating Surface modification Silicon oxide materials Lithium ion batteries

来源：评论

学校读者我要写书评

暂无评论

Decreased intestinal abundance of Akkermansia muciniphila is associated with metabolic disorders among people living with HIV

引用

ANNALS OF MEDICINE 2025年第1期57卷 2474730页

作者： Qian, Zhe Chen, Suling Liao, Xiaoyang Xie, Jingfang Xu, Yuyuan Zhong, Huiqun Ou, lang Zuo, Xiang Xu, xuwen Peng, Jie Wu, Jian Cai, Shaohang Southern Med Univ Guangdong Prov Peoples Hosp Guangdong Acad Med Sci Guangdong Prov Geriatr InstDept Elderly Resp 2 Guangzhou 510030 Peoples R China Southern Med Univ Nanfang Hosp Dept Infect Dis Guangzhou 510515 Peoples R China Southern Med Univ Guangdong Prov Peoples Hosp Guangdong Acad Med Sci Guangdong Prov Geriatr InstDept Geriatr Guangzhou Peoples R China Univ South China Affiliated Nanhua Hosp Dept Hepatobiliary Surg Hengyang Peoples R China Southern Med Univ Nanfang Hosp Dept Gen Surg Div Hepatobiliopancreat Surg Guangzhou Peoples R China South China Univ Technol Sch Med Guangzhou Peoples R China

BackgroundPrevious studies have shown changes in gut microbiota after human immunodeficiency virus (HIV) infection, but there is limited research linking the gut microbiota of people living with HIV (PLWHIV) to metabolic *** total of 103 PLWHIV were followed for 48 weeks of anti-retroviral therapy (ART), with demographic and clinical data collected. Gut microbiome analysis was conducted using metagenomic sequencing of fecal samples from 12 individuals. Nonalcoholic fatty liver disease (NAFLD) was diagnosed based on controlled attenuation parameter (CAP) values of 238 dB/m from liver fibro-scans. Participants were divided based on the presence of metabolic disorders, including NAFLD, overweight, and hyperlipidemia. Akkermansia abundance in stool samples was measured using RT-qPCR, and Pearson correlation and logistic regression were applied for *** sequencing revealed a significant decline in gut Akkermansia abundance in PLWHIV with NAFLD. STAMP analysis of public datasets confirmed this decline after HIV infection, while KEGG pathway analysis identified enrichment of metabolism-related genes. A prospective cohort study with 103 PLWHIV followed for 48 weeks validated these findings. Akkermansia abundance was significantly lower in participants with NAFLD, overweight, and hyperlipidemia at baseline, and it emerged as an independent predictor of NAFLD and overweight. Negative correlations were observed between Akkermansia abundance and both CAP values and body mass index (BMI) at baseline and at week 48. At the 48-week follow-up, Akkermansia remained a predictive marker for *** abundance was reduced in PLWHIV with metabolic disorders and served as a predictive biomarker for NAFLD progression over 48 weeks of ART.

关键词： HIV gut microbiota metabolic diseases NAFLD overweight Akkermansia muciniphila

来源：评论

学校读者我要写书评

暂无评论

槲皮素对副猪嗜血杆菌感染猪气管上皮细胞RPSA、MAPK/NF-κB信号通路的调控作用

引用

中兽医医药杂志 2025年第1期44卷 1-8页

作者：田俊可周朗刘绪文邱银生陆启荣刘宇武汉轻工大学动物营养与饲料科学湖北省重点实验室湖北武汉430023

本试验旨在研究槲皮素对副猪嗜血杆菌(GPS)感染的新生猪气管上皮细胞(NPTr细胞)RPSA、MAPK/NF-κB信号通路的影响。试验采用GPS感染NPTr细胞作为细胞屏障损伤模型,采用Western blot检测NPTr细胞中RPSA、MAPK/NF-κB信号通路蛋白表达水平... 详细信息

本试验旨在研究槲皮素对副猪嗜血杆菌(GPS)感染的新生猪气管上皮细胞(NPTr细胞)RPSA、MAPK/NF-κB信号通路的影响。试验采用GPS感染NPTr细胞作为细胞屏障损伤模型,采用Western blot检测NPTr细胞中RPSA、MAPK/NF-κB信号通路蛋白表达水平,通过设计RPSA干扰引物和RPSA过表达载体,进一步研究槲皮素对GPS感染的NPTr细胞RPSA、MAPK/NF-κB通路的影响。结果显示,与空白对照组相比,GPS感染NPTr细胞后RPSA蛋白、JNK、ERK、p38和NF-κB磷酸化蛋白表达水平均显著上调(P<0.05或P<0.01);与GPS感染组相比,槲皮素的预处理可下调NF-κB、JNK、ERK和p38蛋白的磷酸化水平;RPSA siRNA能够干扰RPSA的表达并降低MAPK/NF-κB相关通路蛋白的表达;RPSA的过表达可显著上调NF-κB、JNK、ERK、p38磷酸化蛋白表达水平;槲皮素处理能显著降低RPSA相关信号通路蛋白的表达水平(P<0.05或P<0.01)。结果提示,槲皮素能够通过调控RPSA、MAPK/NF-κB信号通路来缓解GPS感染所致的气管上皮细胞损伤。

关键词：副猪嗜血杆菌新生猪气管上皮细胞槲皮素 RPSA 信号通路

来源：评论

学校读者我要写书评

暂无评论

Electromagnetic wave absorption properties of red mud-blast furnace slag based geopolymers filled with various wave-absorption materials

引用

CONSTRUCTION AND BUILDING MATERIALS 2023年 404卷

作者： Wang, Tianyu Ning, xuwen Yang, lang Rao, Feng Jiang, Kaixi Fuzhou Univ Sch Mat Sci & Engn Fuzhou 350108 Fujian Peoples R China Fuzhou Univ Zijin Sch Geol & Min Fuzhou 350108 Fujian Peoples R China Fuzhou Univ Fujian Key Lab Green Extract & High value Utilizat Fuzhou 350108 Fujian Peoples R China

In this work, red mud-blast furnace slag (RM-BFS) based geopolymers with excellent electromagnetic wave absorption property is synthesized through the incorporation of wave-absorption materials. The electromagnetic absorption property of geopolymer is characterized through the arched test, in which the reflection loss of specimens is tested by vector network analyzer (VNA). The microstructure and conductivity of geopolymers are characterized through scanning electron microscopy (SEM), concrete porous structure analyzer and conductivity tester. The crystalline phase and functional groups of geopolymers are characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Compared to Portland cement concrete (PCC), wave absorption band of the geopolymer is wider and the absorption peak in high frequency band is more intense. With the optimal addition of hollow glass microsphere (HGM), Fe2O3 and graphite particles, the absorption bandwidth with reflection loss less than -5 dB are 12.4, 7.7 and 8.1 GHz, and the maximum reflection loss are -9.4, -8.4 and -8.7 dB, respectively. This study might give a clue for preparation of geopolymers with high electromagnetic wave absorption properties.

关键词： Electromagnetic wave Compressive strength Microstructure Geopolymers Conductivity

来源：评论

学校读者我要写书评

暂无评论

A Novel Calibration Procedure that Insensitive to Stains and Colors for Pulsed TOF Cameras

A Novel Calibration Procedure that Insensitive to Stains and...

引用

2017 6th International Conference on Advanced Materials and Computer Science(ICAMCS 2017)

作者： Qiang Wu Yincheng Liu xuwen Li Shinan lang College of Information and Communication Engineering Faculty of Information TechnologyBeijing University of Technology College of Life Science and Bioengineering Beijing University of Technology Beijing

The Time-of-Flight(TOF) camera is a new elegant choice for 3D measurement and modelling in many different ***,due to the different method of these new devices of the technology on the market,the knowledge of its performance is far away from *** particular,the distance measurements of these devices are often influenced by some systematic errors,which decrease the quality of the data a *** evaluate these errors,some experiments have been done on pulsed TOF cameras developed by our *** this paper,we proposed a novel calibration procedure for pulsed TOF cameras,which deal with the evaluation of the camera heating period,capture the intrinsic matrix of the camera,the measurement error of different distances and colors,and a quick transformation for coordinate.

关键词： TOF Camera Depth Image Calibration Systematic Errors Coordinate Transformation

来源：评论

学校读者我要写书评

暂无评论

Amanita peptide toxin analysis: An innovative UPLC-MS/MS method utilizing Fe3O4-based magnetic adsorbent

引用

JOURNAL OF FOOD COMPOSITION AND ANALYSIS 2024年 131卷

作者： Jiang, Yifu lang, Le Zhang, Jingwen Ji, Yining Zhang, Chenglong Yang, Ruiqin Li, xuwen Peoples Publ Secur Univ China Sch Criminal Invest Beijing 100038 Peoples R China Jilin Univ Coll Chem Changchun 130021 Peoples R China Jilin Prov Prod Qual Supervis & Inspect Inst Changchun 130000 Peoples R China Jilin Univ Coll New Energy & Environm Changchun 130000 Peoples R China

This study combined the structural characteristics of amanita peptide toxins to prepare a Fe3O4/P4VPBA/PPy/ GO composite material as a magnetic solid-phase extraction adsorbent. The experimental results indicated that this adsorbent showed excellent selectivity for the extraction of amatoxins and phallotoxins from mushroom samples. Compared with traditional dispersive solid-phase extraction, this adsorbent enables rapid separation in the enrichment and elution recovery stages through the application of a magnetic field. Simultaneously, the study optimized the conditions for ultraperformance liquid chromatography-mass spectrometry (UPLC-MS/MS), ensuring both separation efficiency and accuracy while reducing the analysis time. The researchers established the MSPE-UPLC-MS/MS method for the determination of amanita peptide toxins in wild mushrooms. This method not only simplified and expedited the sample pretreatment process but also achieved qualitative and quantitative analyses in a short period, thus demonstrating high detection sensitivity and outstanding recovery rates. Furthermore, the developed method was successfully applied to analyze toxic mushrooms discovered in Nanjing, China. The potential for extensive utilization of this method is highlighted in the field of food analysis and detection.

关键词： Mushroom poisoning Amanita peptide toxins Magnetic solid -phase extraction UPLC-MS/MS Food analysis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：