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Perceptual Gradient Similarity Deviation for Full Reference Image Quality Assessment

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Computers, Materials & Continua 2018年第9期56卷 501-515页

作者： Manyu jin Tao Wang zexuan ji Xiaobo Shen School of Computer Science and Engineering Nanjing University of Science and TechnologyNanjing210094China School of Computer Science and Engineering Nanyang Technology University639798Singapore

Perceptual image quality assessment(IQA)is one of the most indispensable yet challenging problems in image processing and computer vision.It is quite necessary to develop automatic and efficient approaches that can accurately predict perceptual image quality consistently with human subjective evaluation.To further improve the prediction accuracy for the distortion of color images,in this paper,we propose a novel effective and efficient IQA model,called perceptual gradient similarity deviation(PGSD).Based on the gradient magnitude similarity,we proposed a gradient direction selection method to automatically determine the pixel-wise perceptual gradient.The luminance and chrominance channels are both took into account to characterize the quality degradation caused by intensity and color distortions.Finally,a multi-scale strategy is utilized and pooled with different weights to incorporate image details at different resolutions.Experimental results on LIVE,CSIQ and TID2013 databases demonstrate the superior performances of the proposed algorithm.

关键词： Image quality assessment full reference perceptual gradient similarity multi-scale standard deviation pooling

血清人软骨糖蛋白-39对慢性阻塞性肺疾病急性加重的诊断价值

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安徽医药 2024年第4期28卷 723-726页

作者：姬泽萱张长洪冯平冯改霞郭志青河北北方学院附属第一医院呼吸与危重症学科河北张家口075000

目的探讨血清人软骨糖蛋白-39(YKL-40)对于慢性阻塞性肺疾病(COPD)急性加重(AECOPD)的诊断价值。方法纳入2018年9月至2019年6月在河北北方学院附属第一医院住院AECOPD病人85例及同期70例COPD稳定期病人作为对照组,受试者均检测血清YKL-4... 详细信息

目的探讨血清人软骨糖蛋白-39(YKL-40)对于慢性阻塞性肺疾病(COPD)急性加重(AECOPD)的诊断价值。方法纳入2018年9月至2019年6月在河北北方学院附属第一医院住院AECOPD病人85例及同期70例COPD稳定期病人作为对照组,受试者均检测血清YKL-40、降钙素原(PCT)及C反应蛋白(CRP)水平,收集各受试者在院检测的肺功能、血气分析结果。观察各指标在不同的AECOPD临床分级的变化以及YKL-40与相关临床参数的关系。结果两组YKL-40(58.03±12.78)μg/L比(38.69±8.72)μg/L、PCT(7.54±2.71)μg/L比(3.72±1.79)μg/L、CRP(99.29±34.98)mg/L比(52.91±27.77)mg/L比较均差异有统计学意义。随着病人病情加重,AECOPDⅠ、Ⅱ、Ⅲ级血清YKL-40水平逐渐升高(49.23±11.26)μg/L、(56.70±10.38)μg/L、(67.93±10.32)μg/L,各组间比较均差异有统计学意义(均P<0.05)。YKL-40与PCT、CRP、动脉血二氧化碳分压(PaCO_(2))呈正相关,但与预测的第一秒用力呼气容积(FEV_(1))、第一秒用力呼气容积占预计值的百分比(FEV_(1)%)、第一秒用力呼气量占用力肺活量百分率(FEV_(1)/FVC)和动脉血氧分压(PaO2)呈负相关(P<0.05)。结论AECOPD病人血清YKL-40水平随病情加重而升高,升高程度与病情严重程度相关。

关键词：肺疾病慢性阻塞性用力呼气量人软骨糖蛋白-39 降钙素原 C-反应蛋白

非小细胞肺癌组织EMSY、PIDD表达与同源重组修复基因的相关性及其临床意义

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疑难病杂志 2024年第2期23卷 186-191页

作者：陈丽萍项保利王布姬泽萱郭志青赵建清河北北方学院附属第一医院呼吸与危重症医学科河北张家口075000

目的研究非小细胞肺癌(NSCLC)组织中EMSY转录抑制因子(EMSY)、p53诱导的死亡结构域蛋白1(PIDD)表达与同源重组修复基因表达的相关性及临床意义。方法选择2022年1月—2023年4月河北北方学院附属第一医院呼吸与危重症医学科诊治NSCLC患者8... 详细信息

目的研究非小细胞肺癌(NSCLC)组织中EMSY转录抑制因子(EMSY)、p53诱导的死亡结构域蛋白1(PIDD)表达与同源重组修复基因表达的相关性及临床意义。方法选择2022年1月—2023年4月河北北方学院附属第一医院呼吸与危重症医学科诊治NSCLC患者80例。采用实时荧光定量PCR检测癌组织及癌旁组织中EMSY、PIDD表达与同源重组修复基因人乳腺癌易感基因1(BRCA1)、切除修复交叉互补基因1(ERCC1),核糖核苷酸还原酶亚单位1(RRM1)表达。Pearson相关分析EMSY、PIDD表达与同源重组修复基因表达的相关性;分析EMSY、PIDD表达与NSCLC临床病理相关参数的关系及在NSCLC诊断中的价值。结果NSCLC癌组织中EMSY、PIDD、BRCA1、ERCC1、RRM1 mRNA相对表达量均高于癌旁组织(t/P=30.176/<0.001,27.821/<0.001,25.075/<0.001,16.680/<0.001,25.610/<0.001)。NSCLC癌组织中EMSY、PIDD mRNA与BRCA1、ERCC1、RRM1 mRNA表达均呈正相关(r/P=0.654/<0.001,0.712/<0.001,0.584/<0.001;0.724/<0.001,0.661/<0.001,0.563/<0.001)。低分化程度、有淋巴结转移及TNM分期Ⅲ期NSCLC癌组织EMSY、PIDD mRNA表达分别显著高于高中分化程度、无淋巴结转移及TNM分期Ⅰ~Ⅱ期NSCLC癌组织(t/P=13.693/<0.001,13.380/<0.001,12.197/<0.001;10.289/<0.001,11.130/<0.001,9.405/<0.001)。EMSY、PIDD mRNA及两项联合诊断NSCLC的AUC分别为0.834、0.802、0.906,两项联合诊断的AUC大于单一指标(Z=4.751、5.257,P均<0.001)。结论EMSY、PIDD在NSCLC癌组织中表达升高,与同源重组修复基因表达及不良临床病理特征有关,两者联合有助于NSCLC的诊断。

关键词：非小细胞肺癌 EMSY p53诱导的死亡结构域蛋白1 同源重组修复基因诊断

虚拟支气管镜导航在周围性肺部病变检查中的应用

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中国医药导报 2024年第4期21卷 104-107页

作者：陈丽萍项保利赵建清王布郭志青姬泽萱河北北方学院附属第一医院呼吸与危重症医学科河北张家口075000

目的探讨虚拟支气管镜导航(VBN)在周围性肺部病变检查中的应用价值。方法选取2022年5月至2023年6月河北北方学院附属第一医院收治的周围性肺部病变患者80例为研究对象,基于病变活检方法不同,将其分为单纯超声支气管镜组(NVBN组,40例),... 详细信息

目的探讨虚拟支气管镜导航(VBN)在周围性肺部病变检查中的应用价值。方法选取2022年5月至2023年6月河北北方学院附属第一医院收治的周围性肺部病变患者80例为研究对象,基于病变活检方法不同,将其分为单纯超声支气管镜组(NVBN组,40例),VBN联合超声支气管镜组(VBN组,40例)。以病理结果为金标准,比较两组的诊断准确率、病变到达率、开始活检时间、操作总时间及并发症的发生情况。结果 VBN组诊断总准确率高于NVBN组,差异有统计学意义(P0.05)。结论 VBN可提高周围性肺部病变的诊断准确率,缩短了操作时间、安全性高,值得临床推广应用。

关键词：虚拟支气管镜导航周围性肺部病变诊断率并发症

Trend of Developing Aqueous Liquid and Gel Electrolytes for Sustainable,Safe,and High‑Performance Li‑Ion Batteries

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Nano-Micro Letters 2024年第1期16卷 17-34页

作者： Donghwan ji Jaeyun Kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences&Technology(SAIHST)Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Biomedical Institute for Convergence at SKKU(BICS) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Institute of Quantum Biophysics(IQB) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Present Address:Department of NanoEngineering University of California San DiegoLa JollaSan DiegoCA 92093USA

Current lithium-ion batteries(LIBs)rely on organic liquid electrolytes that pose significant risks due to their flammability and toxicity.The potential for environmental pollution and explosions resulting from battery damage or fracture is a critical concern.Water-based(aqueous)electrolytes have been receiving attention as an alternative to organic electrolytes.However,a narrow electrochemicalstability window,water decomposition,and the consequent low battery operating voltage and energy density hinder the practical use of aqueous electrolytes.Therefore,developing novel aqueous electrolytes for sustainable,safe,high-performance LIBs remains challenging.This Review first commences by summarizing the roles and requirements of electrolytes–separators and then delineates the progression of aqueous electrolytes for LIBs,encompassing aqueous liquid and gel electrolyte development trends along with detailed principles of the electrolytes.These aqueous electrolytes are progressed based on strategies using superconcentrated salts,concentrated diluents,polymer additives,polymer networks,and artificial passivation layers,which are used for suppressing water decomposition and widening the electrochemical stability window of water of the electrolytes.In addition,this Review discusses potential strategies for the implementation of aqueous Li-metal batteries with improved electrolyte–electrode interfaces.A comprehensive understanding of each strategy in the aqueous system will assist in the design of an aqueous electrolyte and the development of sustainable and safe high-performance batteries.

关键词： Lithium-ion battery(LIB) Aqueous electrolyte Gel electrolyte Electrochemical stability window Li dendrite

Photocatalytic activation of sulfite by N-doped porous biochar/MnFe_(2)O_(4) interface-driven catalyst for efficient degradation of tetracycline

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Green Energy & Environment 2024年第3期9卷 481-494页

作者： Long Cheng Yuanhui ji jiangsu Province Hi-Tech Key Laboratory for Biomedical Research School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing211189China

A novel photo-catalytic system composed of N-doped biochars(NBCs),MnFe_(2)O_(4) and sulfite activation under ultraviolet(NBCs/MnFe_(2)O_(4)/sulfite/UV)was constructed to realize the efficient eliminate of tetracycline(TC).As the carrier of MnFe_(2)O_(4),NBCs were synthesized from alfalfa,which has large specific surface area,graphite like structure and hierarchical porous structure.The adsorption isotherm indicated that NBCs/MnFe_(2)O_(4)-2:1 had the best adsorption performance for TC(347.56 mg g^(-1)).Through synergistic adsorption and photocatalysis,the removal rate of TC reached 84%,which was significantly higher than that of MnFe_(2)O_(4).Electrochemical impedance spectroscopy(EIS)and Photoluminescence(PL)characterization results showed that the introduction of NBCs improved the separation efficiency of photogenerated electron and hole pairs and enhanced the photocatalytic performance.Moreover,the adsorption,degradation mechanism and degradation path of TC by the catalyst were systematically analyzed by coupling HPLC–MS measurement with the theoretical calculation.Considering the advantages of excellent degradation performance,low cost,easy separation and environmental friendliness of NBCs/MnFe_(2)O_(4),this work was expected to provide a new path for the practical application of biochar.

关键词： Biochar MnFe_(2)O_(4) Sulfite Adsorption Photocatalysis

Small Cycles Property of Some Cremer Rational Maps and Polynomials

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Chinese Annals of Mathematics,Series B 2024年第1期45卷 123-136页

作者： Rong FU ji ZHOU Faculty of Science Yibin UniversityYibin 644000SichuanChina Department of Mathematical Sciences Sichuan Normal UniversityChengdu 610066China

This paper concerns the linearization problem on rational maps of degree d≥2 and polynomials of degree d>2 from the perspective of non-linearizability.The authors introduce a set l_(∞) of irrational numbers and show that if α∈l_(∞),then any rational map is not linearizable and has infinitely many cycles in every neighborhood of the fixed point with multiplier λ=e^(2πiα),Adding more constraints to cubic polynomials,they discuss the above problems by polynomial-like maps.For the family of polynomials,with the help of Yoccoz's method,they obtain its maximum dimension of the set in which the polynomials are non-linearizable.

关键词： Irrationally indifferent fixed point Linearization problem Small cycles property

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结合非局部信息与图割的图像分割算法

计算机辅助设计与图形学学报 2015年第5期27卷 783-791页

作者：王涛纪则轩孙权森南京理工大学计算机科学与工程学院南京210094

基于图割的交互式图像分割方法从图像背景中分离出前景目标,在图像处理和计算机视觉领域引起了广泛的关注.为了进一步提高分割精度,提出一种结合图像非局部信息和图割的交互式图像分割算法.在建模图像非局部信息时为每个像素点设置一个... 详细信息

基于图割的交互式图像分割方法从图像背景中分离出前景目标,在图像处理和计算机视觉领域引起了广泛的关注.为了进一步提高分割精度,提出一种结合图像非局部信息和图割的交互式图像分割算法.在建模图像非局部信息时为每个像素点设置一个固定大小的搜索窗口,每个像素点只需考虑与搜索窗口内像素之间的关系;计算非局部像素对之间相似性时采用图像片替代像素,通过图像片之间的相似性替代像素之间的相似性,以表征图像的非局部信息;将图像非局部信息引入到图割框架中,在传统能量函数的边界项将图像的局部信息与非局部信息合并,组成结合局部非局部信息的新的能量项;构图时新添加一组边集?非局部边集来表示图像的非局部信息,再通过最大流/最小割算法求解得到最终的分割结果.最后通过实验验证了该算法的有效性和可行性.

关键词：图像分割彩色图像图割局部非局部信息

Soft coarse-grained particle model for particle-fluid systems

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Particuology 2024年第1期84卷 178-193页

作者： Yanhao Ye ji Xu Wei Ge State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing100190China

By modeling a group of neighboring real particles as a single coarse-grained particle(CGP),discrete particle method(DPM)is now capable of simulating industrial-scale particle-fluid systems.However,a systematic approach to determine the CGP properties and develop their interaction models is still lacking,which casts uncertainty on the predictivity of the method.In this study,collisions between predefined particle groups are analyzed to construct kernel functions for modeling the CGPs and then the model parameters are determined by equating the statistical properties of the CGPs and the real particles in the physical process studied.This approach is implemented for homogeneous cooling of granular gas,then demonstrated effective in simulating experimental fluidized beds.

关键词： Coarse-grain(CG) Discrete particle method(DPM) Fluidized bed Multi-scale simulation