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国际医学放射学杂志 2024年第3期 373-374页

作者： S.Lee Y.Y.Kim J.shin Y.h.Roh J.Y.Choi V.Chernyak 吴玉平

摘要目的该项更新的Meta分析旨在确定使用肝脏影像报告和数据系统（LI-RADS）2018版本（v2018）的LI-RADS LR-5类对肝细胞癌（hCC）的诊断能力，并通过评估成像方

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基于深度学习的MRI影像组学无创识别hER2低表达状态可预测乳腺癌病人的无病生存期

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国际医学放射学杂志 2024年第2期 252-253页

作者： Y.Guo X.T.Xie W.J.Tang S.Y.Chen M.Y.Wang Y.h.Fan 侯唯姝

摘要目的建立基于深度学习的MRI影像组学（DLR）特征模型，以预测人表皮生长因子受体2(hER2)低表达状态，并进一步通过DLR模型验证乳腺癌病人在预后方面的

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homotopy Analysis Method for Solving Biological Population Model

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Communications in Theoretical Physics 2011年第11期56卷 797-800页

作者： A.A.M.Arafa S.Z.Rida h.Mohamed Department of Mathematics Faculty of ScienceSouth Valley University

In this paper,the homotopy analysis method (hAM) is applied to solve generalized biological *** fractional derivatives are described by Caputo's *** method introduces a significant improvementin this field over existing *** obtained using the scheme presented here agree well with the analyticalsolutions and the numerical results presented in Ref.[6].however,the fundamental solutions of these equations stillexhibit useful scaling properties that make them attractive for applications.

关键词： biological populations model fractional calculus homotopy analysis method Mittag-Leffier function

Development of a high-strength Mg alloy with superior ductility through a unique texture modification from equal channel angular pressing

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Journal of Magnesium and Alloys 2021年第3期9卷 1007-1018页

作者： L.B.Tong J.h.Chu W.T.Sun Z.h.Jiang D.N.Zou S.F.Liu S.Kamado M.Y.Zheng School of Metallurgical Engineering Xi'an University of Architecture and TechnologyXi'an 710055China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Engineering Jilin UniversityChangchun 130025China Department of Mechanical Engineering Nagaoka University of TechnologyNagaoka 940-2188Japan

In the current study,a homogenous ultra-fine grained microstructure with average grain size of 1.0μm is achieved in the Mg-Zn-Ca-Mn alloy through the reduplicative equal channel angular pressing(ECAP)at 300℃,and the mechanical properties are remarkably improved,with room-temperature yield strength of 269.6 MPa and elongation of 22.7%.The twinning deformation results in a discontinuous recrystallization behavior in the initial stage of *** further deformation,the continuously dynamic recrystallization contributes to an obvious grain refinement *** activation of non-basal slip system leads to the formation of a unique basal texture,which is related to the elevated ECAP temperature and the decreased grain *** grain refinement and texture modification derived from ECAP process result in the increase of yield strength,while the cracked secondary phase particles are beneficial to the enhanced ductility,through reducing the stress concentration and hindering premature failure.

关键词： Mg alloy ECAP Microstructural evolution high strength Superior ductility

CQFFA:A Chaotic Quasi-oppositional Farmland Fertility Algorithm for Solving Engineering Optimization Problems

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Journal of Bionic Engineering 2023年第1期20卷 158-183页

作者： Farhad Soleimanian Ghareh.h.pogh Mohammad h.Nadimi-Sh.h.aki Saeid Barshandeh Benyamin Abdollahzadeh.h.da Zamani Department of Computer Engineering Urmia BranchIslamic Azad UniversityUrmia969Iran Faculty of Computer Engineering Najafabad BranchIslamic Azad UniversityNajafabad517Iran Big Data Research Center Najafabad BranchIslamic Azad UniversityNajafabad517Iran Afagh.h.gher Education Institute Urmia969Iran

Farmland Fertility Algorithm(FFA)is a recent nature-inspired metaheuristic algorithm for solving optimization ***,FFA has some drawbacks:slow convergence and imbalance of diversification(exploration)and intensification(exploitation).An adaptive mechanism in every algorithm can achieve a proper balance between exploration and *** literature shows that chaotic maps are incorporated into metaheuristic algorithms to eliminate these ***,in this paper,twelve chaotic maps have been embedded into FFA to find the best numbers of prospectors to increase the exploitation of the best promising ***,the Quasi-Oppositional-Based Learning(QOBL)mechanism enhances the exploration speed and convergence rate;we name a CQFFA *** improvements have been made in line with the weaknesses of the FFA algorithm because the FFA algorithm has fallen into the optimal local trap in solving some complex problems or does not have sufficient ability in the intensification *** results obtained show that the proposed CQFFA model has been significantly *** is applied to twenty-three widely-used test functions and compared with similar state-of-the-art algorithms statistically and ***,the CQFFA algorithm has evaluated six real-world engineering *** experimental results showed that the CQFFA algorithm outperforms other competitor algorithms.

关键词： Nature-inspired algorithm Farmland fertility algorithm Chaotic maps Quasi Engineering optimization problems

Online Pattern Recognition and Data Correction of PMU Data Under GPS Spoofing Attack

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Journal of Modern Power Systems and Clean Energy 2020年第6期8卷 1240-1249页

作者： Ancheng Xue Feiyang Xu Jingsong Xu Joe h.Chow Shuang Leng Tianshu Bi State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China State Grid Ningxia Yinchuan Electric Power Company Yinchuan 750001China the Department of Electrical Computerand Systems EngineeringRensselaer Polytechnic Institute(RPI)TroyNY 12180USA

Smart grids are increasingly dependent on data with the rapid development of communication and *** one of the important data sources of smart grids,phasor measurement unit(PMU)is facing the high risk from *** with cyber attacks,global position system(GPS)spoofing attacks(GSAs)are easier to implement because they can be exploited by portable devices,without the need to access the physical ***,this paper proposes a novel method for pattern recognition of GSA and an additional function of the proposed method is the data correction to the phase angle difference(PAD)***,this paper analyzes the effect of GSA on PMU measurement and gives two common patterns of GSA,i.e.,the step attack and the ramp ***,the method of estimating the PAD deviation across a transmission line introduced by GSA is proposed,which does not require the line *** obtaining the estimated PAD deviations,the pattern of GSA can be recognized by hypothesis tests and correlation coefficients according to the statistical characteristics of the estimated PAD ***,with the case studies,the effectiveness of the proposed method is demonstrated,and the success rate of the pattern recognition and the online performance of the proposed method are analyzed.

关键词： global position system(GPS) GPS spoofing attack(GSA),phasor measurement,pattern recognition,data correction,line parameter

耐热碱性蛋白酶Ah-101的异源表达、酶学性质与洗涤应用研究

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中国生物工程杂志 2024年第4期44卷 23-32页

作者：郝漫邵岚莹公为峰惠威史超硕路福平张会图天津科技大学生物工程学院天津300457

目的:通过NCBI(National Center for Biotechnology Information)数据库筛选可以应用于洗涤工业的蛋白酶,使用地衣芽孢杆菌进行高效表达。方法:利用同源重组的方式将蛋白酶基因整合到地衣芽孢杆菌基因组中,研究重组蛋白酶的酶学特性和... 详细信息

目的:通过NCBI(National Center for Biotechnology Information)数据库筛选可以应用于洗涤工业的蛋白酶,使用地衣芽孢杆菌进行高效表达。方法:利用同源重组的方式将蛋白酶基因整合到地衣芽孢杆菌基因组中,研究重组蛋白酶的酶学特性和洗涤效果。结果:该重组酶的最适作用温度为60℃,最适ph为11.0;Ah-101具有良好的耐热性,可以在20~55℃范围内保持稳定,在60℃保温1 h,剩余活性仍高于30%;此外,该酶与表面活性剂和液体洗涤剂具有良好的兼容性,在终浓度为0.1%和0.5%的表面活性剂和液体洗涤剂中孵育2 h,重组酶的酶活力损失小于30%。结论:成功构建了一株含有外源蛋白酶的地衣芽孢杆菌重组菌株,对重组蛋白酶的特性和洗涤效果进行研究,该重组蛋白酶可以作为环保型酶制剂应用到洗涤工业中。

关键词：耐热碱性蛋白酶地衣芽孢杆菌整合表达洗涤工业

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论溢水建筑物下游的研究方法

泥沙研究 1958年第1期 60-64页

作者： h.h.别辽雪夫斯基张子钜西南水工试验所

由于对发生在联结段上的许多水力现象的复杂性缺乏充分研究,迫使我们在许多大型水工建筑物中要选定溢水建筑物的出口段尺寸及其下游消能设备时,就不得不借助于水工试验室的模型试验方法来加以解决。这种情现不能认为是正常的。首先,因... 详细信息

由于对发生在联结段上的许多水力现象的复杂性缺乏充分研究,迫使我们在许多大型水工建筑物中要选定溢水建筑物的出口段尺寸及其下游消能设备时,就不得不借助于水工试验室的模型试验方法来加以解决。这种情现不能认为是正常的。首先,因为个别的试验研究并不能用来概括大量的建筑物,特别是中小型建筑物。所以,对各种类型建筑物的下游设备制定有科学根据的工程设计方法,并找出各种类型的溢水建筑物联结段最合理的措施,乃是非常迫切的任务。解决了这样的问题,那么中水头和低水头的基本类型也就并不怎么多了。可将其归纳为:没有消能设备的平直联结的溢流坝和具有底槛式消能设备的溢流坝,具有鼻坎的溢流坝,宽顶埝式溢水建筑物和栏河坝。从上下游联结情况看来,上述类型又可分为:具有或没有闸门及其各顶操作程序;具有宽敞的下游。而后者按其出口加固段的结构型式,又有如整体护坦或透水护坦等等。在有关下游问题的许多论著中,主要的缺点是对不可分割的和有先决条件的综合现象在研究上的

关键词：护坦动压力局部冲刷浮托力压力差消能建筑物(水利) 折冲水流水流动下游河段建筑物溢水

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基于Mask-RCNN的图像篡改检测模型

计算机仿真 2024年第7期41卷 227-232页

作者：李士杰田秀霞上海电力大学计算机科学与技术学院上海201306

随着图像篡改工具的多样化发展,伪造图片持续增多,并且不再局限于拼接、复制-移动、移除等某一具体的技术,然而当前提出的多数方法面对包含多种篡改类型图片的情况下,检测效果较差。因此提出了一种双通道Mask-RCNN的图像篡改检测模型。... 详细信息

随着图像篡改工具的多样化发展,伪造图片持续增多,并且不再局限于拼接、复制-移动、移除等某一具体的技术,然而当前提出的多数方法面对包含多种篡改类型图片的情况下,检测效果较差。因此提出了一种双通道Mask-RCNN的图像篡改检测模型。通过噪声通道挖掘图像的噪声分布等内部统计特征,通过彩色图像通道提取图像对比度差异、篡改伪影以及边界等表层特征,同时利用自适应双重注意力模块自适应地融合两个通道的特征,以准确定位篡改区域,实现像素级分割。在主流标准数据集上的实验结果表明,所提模型相较于当前先进模型具有更优的检测性能,是一种更加通用且精确的图像篡改检测模型。

关键词：图像篡改检测双通道网络注意力机制噪声信息

Localized space-tim e method of fundamental solutions for three-dimensional transient diffusion problem

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Acta Mechanica Sinica 2020年第5期36卷 1051-1057,I0002页

作者： L.Qiu J.Lin Q.-h.Qin W.Chen International Center for Simulation Software in Engineering and Sciences College of Mechanics and MaterialsHohai UniversityNanjing 210098China College of Engineering and Computer Science Australian National UniversityCanberraACT 2601Australia State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China State Key Laboratory of Acoustic Institute of AcousticsChinese Academy of SciencesBeijing 100190China

A localized space-time method of fundamental solutions(LSTMFS)is extended for solving three-dimensional transient diffusion problems in this *** interval segmentation in temporal direction is developed for the accurate simulation of long-time-dependent diffusion *** the LSTMFS,the whole space-time domain with nodes arranged i divided into a series of overlapping subdomains with a simple *** each subdomain,the conventional method of fundamental solutions is utilized and the coefficients associated with the considered domain can be explicitly *** calculating a combined sparse matrix system,the value at any node inside the space-time domain can be *** experi-ments demonstrate that high accuracy and efficiency can be simultaneously achieved via the LSTMFS,even for the problems defined on a long-time and quite complex computational domain.

关键词： Localized spacetime method of fundamental solutions Meshless method Long-time evolution Transient diffusion