检索结果-南通市图书馆

Guided-YNet: Saliency Feature-Guided Interactive Feature Enhancement Lung Tumor Segmentation Network

Computers, Materials & Continua 2024年第9期80卷 4813-4832页

作者： Tao zhou Yunfeng Pan Huiling Lu Pei Dang Yujie Guo yaxing Wang School of Computer Science and Engineering North Minzu UniversityYinchuan750021China School of Medical Information&Engineering Ningxia Medical UniversityYinchuan750004China Key Laboratory of Image and Graphics Intelligent Processing of State Ethnic Affairs Commission NorthMinzuUniversityYinchuan750021China

Multimodal lung tumor medical images can provide anatomical and functional information for the same *** as Positron Emission Computed Tomography(PET),Computed Tomography(CT),and *** to utilize the lesion anatomical and functional information effectively and improve the network segmentation performance are key *** solve the problem,the Saliency Feature-Guided Interactive Feature Enhancement Lung Tumor Segmentation Network(Guide-YNet)is proposed in this ***,a double-encoder single-decoder U-Net is used as the backbone in this model,a single-coder single-decoder U-Net is used to generate the saliency guided feature using PET image and transmit it into the skip connection of the backbone,and the high sensitivity of PET images to tumors is used to guide the network to accurately locate ***,a Cross Scale Feature Enhancement Module(CSFEM)is designed to extract multi-scale fusion features after ***,a Cross-Layer Interactive Feature Enhancement Module(CIFEM)is designed in the encoder to enhance the spatial position information and semantic ***,a Cross-Dimension Cross-Layer Feature Enhancement Module(CCFEM)is proposed in the decoder,which effectively extractsmultimodal image features through global attention and multi-dimension local *** proposed method is verified on the lung multimodal medical image datasets,and the results showthat theMean Intersection overUnion(MIoU),Accuracy(Acc),Dice Similarity Coefficient(Dice),Volumetric overlap error(Voe),Relative volume difference(Rvd)of the proposed method on lung lesion segmentation are 87.27%,93.08%,97.77%,95.92%,89.28%,and 88.68%,*** is of great significance for computer-aided diagnosis.

关键词： Medical image segmentation U-Net saliency feature guidance cross-modal feature enhancement cross-dimension feature enhancement

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

白蛋白与纤维蛋白原的比值对结直肠癌根治术患者预后的预测价值

引用

中华普通外科杂志 2022年第4期37卷 241-244页

作者：王宏刚胡浩然夏勇周亚星杨龙李立军王勇姜建国刘庆宏泰州市人民医院普通外科泰州225300 大连医科大学研究生培养基地泰州市人民医院大连116044 南通大学医学院南通226007

目的探讨白蛋白与纤维蛋白原的比值(AFR)对结直肠癌根治术患者预后的预测价值。方法回顾性分析2015年8月至2017年7月在泰州市人民医院普通外科行腹腔镜结直肠癌根治术216例患者的临床病理资料,同时收集术前7 d内患者的血清白蛋白和血浆... 详细信息

目的探讨白蛋白与纤维蛋白原的比值(AFR)对结直肠癌根治术患者预后的预测价值。方法回顾性分析2015年8月至2017年7月在泰州市人民医院普通外科行腹腔镜结直肠癌根治术216例患者的临床病理资料,同时收集术前7 d内患者的血清白蛋白和血浆纤维蛋白原测定结果,通过ROC曲线Youden指数确定AFR最佳界点,采用Kaplan-Meier分析、单因素和多因素COX回归模型分析预后的影响因素。结果术前AFR对腹腔镜结直肠癌根治术患者术后总生存率的最佳界值为9.43。单因素和多因素分析结果显示:年龄≤65岁、TNM分期Ⅰ~Ⅱ期、AFR≥9.43患者有更长的总生存期和无病生存期(均P<0.05)。结论术前AFR水平对腹腔镜结直肠癌根治术患者的术后生存具有良好的预测作用,并且AFR<9.43是术后总生存期和无病生存期的独立危险因素。

关键词：结直肠肿瘤白蛋白纤维蛋白原预后

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Characterization and identification towards dynamic-based electrical modeling of lithium-ion batteries

引用

Journal of Energy Chemistry 2024年第5期92卷 738-758页

作者： Chuanxin Fan Kailong Liu yaxing Ren Qiao Peng School of Automation Nanjing Institute of TechnologyNanjing 211167JiangsuChina School of Control Science and Engineering Shandong UniversityJinan 250100ShandongChina School of Engineering University of LincolnLincoln LN67TSUK Information Technology Analytics&Operations GroupQueen’s University BelfastBelfast BT95EEUK

Lithium-ion batteries are widely recognized as a crucial enabling technology for the advancement of electric vehicles and energy storage systems in the *** design of battery state estimation and control algorithms in battery management systems is usually based on battery models,which interpret crucial battery dynamics through the utilization of mathematical ***,the investigation of battery dynamics with the purpose of battery system identification has garnered considerable attention in the realm of battery *** methods in terms of linear and nonlinear response of lithium-ion batteries have emerged as a prominent area of study in this *** review has undertaken an analysis and discussion of characterization methods,with a particular focus on the motivation of battery system ***,this work encompasses the incorporation of frequency domain nonlinear characterization methods and dynamics-based battery electrical *** aim of this study is to establish a connection between the characterization and identification of battery systems for researchers and engineers specialized in the field of batteries,with the intention of promoting the advancement of efficient battery technology for real-world applications.

关键词： Lithium-ion battery Battery dynamics Nonlinear characterization Nonlinear battery model

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

High-SNR Staining Algorithm for One-Way Wave Equation-Based Modelling and Imaging

引用

Communications in Computational Physics 2020年第6期28卷 187-206页

作者： yaxing Li Xiaofeng Jia Laboratory of Seismology and Physics of Earth’s Interior School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China National Geophysical Observatory at Mengcheng University of Science and Technology of ChinaAuhuiChina

Staining algorithms based on two-way wave equation migration methods have been applied to improve the signal-to-noise ratio(SNR)of poorly illuminated structures such as those in subsalt *** regular staining algorithms,when a source wavefield reaches the stained area that is associated with the target structures,a new wavefield called stained wavefield is excited,and this stained wavefield forward extrapolates synchronously with the real source *** forward-extrapolated stained and real source wavefields are cross-correlated with the backward-extrapolated receiver wavefield,and we obtain the stained and the real reverse time migration(RTM)*** staining algorithms for RTM can suppress the noise of non-target regions and obtain high SNR images of the target *** RTM methods are limited by the low computational efficiency and SNR,by contrast,one-way wave equation migration(OWEM)methods have the advantages of high efficiency and no interference from ***,we developed a new staining method based on the generalised screen propagator(GSP)as a case of OWEM methods for subsalt ***,a new stained wavefield called stained receiver wavefield is proposed here,forming two new staining strategies for seismic imaging,in which forward-propagated source and backward-propagated receiver wavefields can be conveniently selected to be stained at the stained *** experiments demonstrated that this staining GSP method is more effective in improving the SNR of subsalt structures compared to conventional GSP migration and RTM methods;moreover,these new staining strategies as applied to the OWEM methods can greatly improve the SNR of weakly illuminated structures in subsalt zones,in comparison with regular staining algorithms for one-way methods.

关键词： One-way two-way modelling imaging staining RTM

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Nonlinear Interval Portfolio Selection Model and Its Application in Banks

引用

Journal of Systems Science & Complexity 2018年第3期31卷 696-733页

作者： YAN Dawen HU yaxing LAI Kin Keung Faculty of Management and Economics Dalian University of Technology Dalian 116024 China School of Mathematical Science Dalian University of Technology Dalian 116024 China Bank of Dalian Dalian 116001 China School of Mathematical Science Dalian University of Technology Dalian 116024 China International Business School Shaanxi Normal University Xi'an 710062 China College of Management Xidian University Xi'an 710126 China

In classical Markowitz＇s Mean-Variance model, parameters such as the mean and covari- ance of the underlying assets＇ future return are assumed to be known exactly. However, this is not always the case. The parameters often correspond to quantities that fall within a range, or can be known ambiguously at the time when investment decision must be made. In such situations, investors determine returns on investment and risks etc. and make portfolio decisions based on experience and economic wisdom. This paper tries to use the concept of interval numbers in the fuzzy set theory to extend the classical mean-variance portfolio selection model to a mean-downside semi-variance model with consideration of liquidity requirements of a bank. The semi-variance constraint is employed to control the downside risk, filling in the existing interval portfolio optimization model based on the linear semi-absolute deviation to depict the downside risk. Simulation results show that the model behaves robustly for risky assets with highest or lowest mean historical rate of return and the optimal investment proportions have good stability. This suggests that for these kinds of assets the model can reduce the risk of high deviation caused by the deviation in the decision maker＇s experience and economic wisdom.

关键词： Downside-risk management interval return portfolio selection semi-variance simulation.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

应用型护理本科人才培养目标体系指标的制订

引用

中国实用护理杂志 2016年第21期32卷 -页

作者：马玥高钰琳秦芳李希琳周亚星潘靖菁王惠珍南方医科大学护理学院广州510515

目的：通过专家咨询法，制订应用型护理本科人才培养目标框架体系，明确应用型人才培养目标条目。方法通过文献回顾与小组讨论，设计德尔菲专家咨询问卷。选取23名专家，来自护理教育和护理管理方向。通过邮件和纸质版问卷发放的方式，... 详细信息

目的：通过专家咨询法，制订应用型护理本科人才培养目标框架体系，明确应用型人才培养目标条目。方法通过文献回顾与小组讨论，设计德尔菲专家咨询问卷。选取23名专家，来自护理教育和护理管理方向。通过邮件和纸质版问卷发放的方式，进行2轮专家咨询并分析结果。结果2轮咨询后共回收有效问卷20份。此次专家咨询科学性可靠性良好：专家回复积极，权威程度为0.857，肯德尔和协系数为0.130～0.293，协调程度良好（P＜0.05）。通过2轮专家咨询，得出应用型护理本科人才培养目标的一级指标3个：态度、价值观与基本素养；知识目标；能力目标；二级指标15个，三级指标63个。结论通过专家咨询法，细化了应用型护理本科人才培养目标指标，为应用型护理本科人才培养模式和课程改革提供依据。

关键词：应用型护理本科培养目标

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

鲁中南典型岩溶水系统地下水污染预警评价

引用

山东国土资源 2021年第7期37卷 38-43页

作者：周亚醒付一夫扈剑琨孟宪洲李晨曦付庆杰山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) 山东济宁272100 济宁市岩溶地质重点实验室山东济宁272100 济宁市兖州区政务服务中心山东济宁272100

地下水污染预警是区域地下水资源保护的重要手段。山东双村岩溶水系统是典型的鲁中南单斜构造型岩溶水系统之一,现开采量39.848万m^(3)/d,为特大型岩溶水源地。30余年的水质监测数据表明,岩溶水水质逐渐变差、水化学类型变复杂。在查明... 详细信息

地下水污染预警是区域地下水资源保护的重要手段。山东双村岩溶水系统是典型的鲁中南单斜构造型岩溶水系统之一,现开采量39.848万m^(3)/d,为特大型岩溶水源地。30余年的水质监测数据表明,岩溶水水质逐渐变差、水化学类型变复杂。在查明水文地质条件、污染源调查和长序列水质监测的基础上,构建了有针对性的地下水污染风险评价指标体系,通过全面考虑地下水水质现状、水质变化趋势和地下水污染风险等主要影响因素,采用综合指标法开展了地下水污染预警研究。研究区地下水污染预警为中警区和巨警区,地下水补径排条件、污染源分布以及含水层防污性能是主要影响因素,控制废水排污量、严格执行达标排放以及建立完善地下水水质动态监测网络是控制地下水污染的重要手段。本次构建的地下水污染风险评价指标体系较为合理,预警结果较为可信,对地下水污染预警评价具有一定的借鉴意义。

关键词：岩溶水系统地下水污染预警研究鲁中南

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Constructing confidence intervals of extreme rainfall quantiles using Bayesian,bootstrap,and profile likelihood approaches

引用

Science China(Technological Sciences) 2016年第4期59卷 573-585页

作者： CHEN Si LI yaxing SHIN JiYae KIM TaeWoong department of civil and environmental engineering hanyang universitySeoul 133-791Korea department of electronics&communication engineering hanyang universityAnsan 426-791Korea department of civil and environmental engineering hanyang universityAnsan 426-791Korea

Hydrological risk is highly dependent on the occurrence of extreme *** fact has led to a wide range of studies on the estimation and uncertainty analysis of the *** most cases,confidence intervals(CIs)are constructed to represent the uncertainty of the *** the accuracy of CIs depends on the asymptotic normality of the data and is questionable with limited observations in practice,a Bayesian highest posterior density(HPD)interval,bootstrap percentile interval,and profile likelihood(PL)interval have been introduced to analyze the uncertainty that does not depend on the normality ***,comparison studies to investigate their performances in terms of the accuracy and uncertainty of the estimates are *** addition,the strengths,weakness,and conditions necessary for performing each method also must be ***,in this study,test experiments with simulations from varying parent distributions and different sample sizes were ***,applications to the annual maximum rainfall(AMR)time series data in South Korea were *** districts with 38-year(1973–2010)AMR observations were fitted by the three aforementioned methods in the *** both the experimental and application results,the Bayesian method is found to provide the lowest uncertainty of the design level while the PL estimates generally have the highest accuracy but also the largest *** bootstrap estimates are usually inferior to the other two methods,but can perform adequately when the distribution model is not heavy-tailed and the sample size is *** distribution tail behavior and the sample size are clearly found to affect the estimation accuracy and *** study presents a comparative result,which can help researchers make decisions in the context of assessing extreme rainfall uncertainties.

关键词： Bayesian bootstrap profile likelihood confidence interval frequency analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A critical survey of technologies of large offshore wind farm integration: summary, advances, and perspectives

引用

Protection and Control of Modern Power Systems 2022年第1期7卷 233-264页

作者： Bo Yang Bingqiang Liu Hongyu zhou Jingbo Wang Wei Yao Shaocong Wu Hongchun Shu yaxing Ren Faculty of Electric Power Engineering Kunming University of Science and TechnologyKunming 650500China State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology)Wuhan 430074Hubei ProvinceChina Warwick Manufacturing Group University of WarwickCoventry CV47ALUK

Offshore wind farms(OWFs)have received widespread attention for their abundant unexploited wind energy poten-tial and convenient locations *** are rapidly developing towards having large capacity and being located further away from *** is thus necessary to explore effective power transmission technologies to connect large OWFs to onshore *** present,three types of power transmission technologies have been proposed for large OWF *** are:high voltage alternating current(HVAC)transmission,high voltage direct current(HVDC)transmission,and low-frequency alternating current(LFAC)or fractional frequency alternating current *** work undertakes a comprehensive review of grid connection technologies for large OWF *** with previous reviews,a more exhaustive summary is provided to elaborate HVAC,LFAC,and five HVDC topologies,consisting of line-commutated converter HVDC,voltage source converter HVDC,hybrid-HVDC,diode rectifier-based HVDC,and all DC transmission *** fault ride-through technologies of the grid connection schemes are also presented in detail to provide research references and guidelines for *** addition,a comprehensive evalu-ation of the seven grid connection technologies for large OWFs is proposed based on eight specific ***,eight conclusions and six perspectives are outlined for future research in integrating large OWFs.

关键词： Offshore wind farm HVAC HVDC LFAC Fault ride-through

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

24份甜高粱主要农艺性状与生物产量综合分析

引用

中国农学通报 2022年第30期38卷 21-28页

作者：罗巍周伟王振国李岩宇闻昊杨志强余忠浩李资文周亚星内蒙古民族大学农学院科尔沁沙地生态农业国家民委重点实验室内蒙古通辽028000 通辽市农牧科学研究所内蒙古通辽028000

为了探究甜高粱主要农艺性状与生物产量的关系,筛选出综合表现优良的甜高粱材料,进而为今后甜高粱育种提供理论依据。以24份甜高粱杂交组合为试材,对其主要农艺性状及生物产量进行灰色关联度分析、相关性分析、通径分析以及主成分分析... 详细信息

为了探究甜高粱主要农艺性状与生物产量的关系,筛选出综合表现优良的甜高粱材料,进而为今后甜高粱育种提供理论依据。以24份甜高粱杂交组合为试材,对其主要农艺性状及生物产量进行灰色关联度分析、相关性分析、通径分析以及主成分分析。结果表明:主穗长度和穗粒数的变异系数较大;灰色关联度结果表明糖锤度与生物产量关联度最大。相关分析表明株高与茎秆长度,主穗长度与千粒重达到极显著正相关;通径分析结果表明主穗长度、茎秆长度、千粒重、榨汁率、糖锤度本身的直接效应对甜高粱的生物产量有正向作用。主成分分析得出株高、茎秆长度、穗粒数、糖锤度、榨汁率、主穗长度、生物产量这7个性状相对品种的综合表现影响更大。因此,在选育甜高粱杂交种时,要注重对糖锤度、茎粗、茎秆长度的选择,同时兼顾对株高、穗粒数、主穗长度、榨汁率、千粒重的选择。

关键词：甜高粱农艺性状灰色关联度分析通径分析主成分分析

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：