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国际医学放射学杂志 2022年第2期 247-248页

作者： T.Gerhalter M.Cloos A.M.Chen s.Dehkharghani R.Peralta j.s.babb 孔令敏

摘要目的评估基于MR指纹成像（MRF）的弛豫特性是否与轻度创伤性脑损伤（mTBI）病人预后存在横断面及前瞻性关联，并将其结果与扩散张量成像（DTI）的结果进行比

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在用立体定向真空辅助活检诊断高危乳腺病变后会发生什么? 诊断后管理与影像检查依从性的观察性研究

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国际医学放射学杂志 2018年第4期 468-469页

作者： Y.M.Gao M.Albert L.L.Y.Lin A.A.Lewin j.s.babb s.L.Heller 李若阳 Department of Radiology New York University-Langone Medical Center

目的采用立体定向活组织检查诊断出高危病变后,评估有或没有行手术切除的病人关于每年或每两年一次的乳腺X线筛查的依从性,并确定在高危诊断后可能影响筛查依从性的临床因素。材料与方法本回顾性研究经机构伦理委员会批准并遵循HIPAA。... 详细信息

目的采用立体定向活组织检查诊断出高危病变后,评估有或没有行手术切除的病人关于每年或每两年一次的乳腺X线筛查的依从性,并确定在高危诊断后可能影响筛查依从性的临床因素。材料与方法本回顾性研究经机构伦理委员会批准并遵循HIPAA。研究纳入了208例在2012年1月—2014年12月期间接受立体定向活检并发现高危病灶的病人。记录病人是否接受手术切除和/或随访乳腺X线检查。统计上述病人在1年（9;8个月）或2年（9;0个月）内接受的乳腺X线检查,并与45 508名在同一机构同一时期内的正常妇女进行对比。评估与诊断后管理和筛查依从性相关的可能因素。回顾临床病历,并经乳腺外科医生确认,评估诊断后化学药物预防用量（病人决定服用化学预防药物）。采用Fisher精确检验比较每年或每两年一次的筛查依从率。采用二元逻辑回归来确定预测在选定时间范围内是否需重复筛查的因素。结果 67 874名女性中,913名（1.3%）接受了立体定向活检的建议,并诊断出中高危病灶208个（22.8%）。排除既往有乳腺癌个人史或在手术中发展为癌症的病人,186名女性中有124名（66.7%）接受了手术,62名（33.3%）没有接受手术。每年或每两年一次的乳腺X线检查术后总体符合率与对照组相似（每年56.4%∶50.8%,P=0.160;两年一次,62.0%∶60.1%,P=0.630）。手术组乳腺X线检查的依从性明显优于非手术组的[每年一次70.0%∶32.0%,优势比（OR）=5.0,95%CI:2.4;0.1,P<0.001;两年一次,74.3%∶40.0%,OR=4.3,95%CI:2.1;.8,P<0.001]。在非手术组病人中,接受每年一次或两年一次的乳腺X线检查的病人比未接受治疗的女性更有可能于乳腺外科就诊（每年一次为77.3%∶35.7%,P=0.005;两年一次为67.9%∶36.4%,P=0.045）。所有接受化学预防药物的病人都进行了手术咨询（100%;n=21）。结论尽管在立体定向乳腺活检中诊断为高危病灶不会影响随后的乳腺X线检查的总体依从性,但没有手术切除的病人,尤其是未接受过手术咨询的病人,其成像的依从性和药物预防均低于接受手术的人,这表明专科化护理在优化临床管理中有着很重要的作用。

关键词：立体定向依从性手术切除

Generalized polynomial chaos expansion by reanalysis using static condensation based on substructuring

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 819-836页

作者： D.LEE s.CHANG j.LEE Department of Automotive Engineering Hanyang UniversitySeoul 04763Republic of Korea school of Mechanical Engineering Chungnam National UniversityDaejeon 34134Republic of Korea Department of Mechanical Robotics and Energy EngineeringDongguk UniversitySeoul 04620Republic of Korea

This paper presents a new computational method for forward uncertainty quantification(UQ)analyses on large-scale structural systems in the presence of arbitrary and dependent random *** method consists of a generalized polynomial chaos expansion(GPCE)for statistical moment and reliability analyses associated with the stochastic output and a static reanalysis method to generate the input-output data *** the reanalysis,we employ substructuring for a structure to isolate its local regions that vary due to random *** allows for avoiding repeated computations of invariant substructures while generating the input-output data *** substructuring with static condensation further improves the computational efficiency of the reanalysis without losing ***,the GPCE with the static reanalysis method can achieve significant computational saving,thus mitigating the curse of dimensionality to some degree for UQ under high-dimensional *** numerical results obtained from a simple structure indicate that the proposed method for UQ produces accurate solutions more efficiently than the GPCE using full finite element analyses(FEAs).We also demonstrate the efficiency and scalability of the proposed method by executing UQ for a large-scale wing-box structure under ten-dimensional(all-dependent)random inputs.

关键词： forward uncertainty quantification(UQ) generalized polynomial chaos expansion(GPCE) static reanalysis method static condensation substructuring

多体素质子MR波谱用于鉴别精神分裂症病人前扣带回的代谢异常

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国际医学放射学杂志 2012年第1期 75-76页

作者： C.j.Hardy A.Tal j.s.babb N.N.Perry j.W.Messinger D.Antonius 张继 Department of Radiology New York University School of Medicine660 First Ave4th FloorNew YorkNY10016

目的为了验证精神分裂症病人的前扣带回皮质(ACC)不同区域的代谢与健康对照组不同的假说。材料与方法此研究经伦理委员会批准且符合HIPAA,所有参与者均签署了书面知情同意书。22例精神分裂症病人[男13例,女

关键词：前扣带回尾部精神分裂症早发性痴呆波谱 MR 病人质子核子

乳腺癌体素内不相干运动直方图与恶性程度、组织亚型及分子预后因素的对比分析

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国际医学放射学杂志 2016年第5期 591-592页

作者： G.Y.Cho L.Moy s.G.Kim s.H.Baete M.Moccaldi j.s.babb 庞晓溪 Center for Advanced Imaging Innovation and Research (CAI2R) New York University School of Medicine

摘要目的探讨体素内不相干运动(IVIM)直方图分析检测非均质乳腺癌。方法本研究符合HIPAA法案,为经伦理委员会批准而进行的回顾性研究,纳入62例病人[年龄(48.44±11.14)岁,50个恶性和12个良性病变],所有病人乳腺行3 T MRI增强和DWI成像... 详细信息

摘要目的探讨体素内不相干运动(IVIM)直方图分析检测非均质乳腺癌。方法本研究符合HIPAA法案,为经伦理委员会批准而进行的回顾性研究,纳入62例病人[年龄(48.44±11.14)岁,50个恶性和12个良性病变],所有病人乳腺行3 T MRI增强和DWI成像。采用基于像素分析计算全病

关键词：体素内不相干运动预后因素恶性程度直方图亚型乳腺癌乳腺肿瘤分子

Background removal from global auroral images:Data-driven dayglow modeling

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Earth and Planetary Physics 2024年第1期8卷 247-257页

作者： A.Ohma M.Madelaire K.M.Laundal j.P.Reistad s.M.Hatch s.Gasparini s.j.Walker Birkeland Centre for space science Department of Physics and TechnologyUniversity of BergenBergenNorway

Global images of auroras obtained by cameras on spacecraft are a key tool for studying the near-Earth ***,the cameras are sensitive not only to auroral emissions produced by precipitating particles,but also to dayglow emissions produced by photoelectrons induced by *** emissions and scattered sunlight can contribute to the background *** fully utilize such images in space science,background contamination must be removed to isolate the auroral *** we outline a data-driven approach to modeling the background intensity in multiple images by formulating linear inverse problems based on B-splines and spherical *** approach is robust,flexible,and iteratively deselects outliers,such as auroral *** final model is smooth across the terminator and accounts for slow temporal variations and large-scale asymmetries in the *** demonstrate the model by using the three far ultraviolet cameras on the Imager for Magnetopause-to-Aurora Global Exploration(IMAGE)*** method can be applied to historical missions and is relevant for upcoming missions,such as the solar wind Magnetosphere Ionosphere Link Explorer(sMILE)mission.

关键词： aurora dayglow modeling global auroral images far ultraviolet images dayglow removal

Mathematical modeling and simulations of stress mitigation by coating polycrystalline particles in lithium-ion batteries

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Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 947-962页

作者： N.IQBAL j.CHOI s.F.sHAH C.LEE s.LEE Department of Mechanical Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A chemo-mechanical model is developed to investigate the effects on the stress development of the coating of polycrystalline Ni-rich LiNixMnyCo_(z)O_(2)(x≥0.8)(NMC)particles with poly(3,4-ethylenedioxythiophene)(PEDOT).The simulation results show that the coating of primary NMC particles significantly reduces the stress generation by efficiently accommodating the volume change associated with the lithium diffusion,and the coating layer plays roles both as a cushion against the volume change and a channel for the lithium transport,promoting the lithium distribution across the secondary particles more ***,the lower stiffness,higher ionic conductivity,and larger thickness of the coating layer improve the stress *** paper provides a mathematical framework for calculating the chemo-mechanical responses of anisotropic electrode materials and fundamental insights into how the coating of NMC active particles mitigates stress levels.

关键词： lithium-ion battery(LIB) polycrystalline particle coating finite element simulation Ni-rich LiNixMnyCo_(z)O_(2)(x>0.8)(NMC)

肺结节:使用系列CT及3D容量分析法对病人生长率评估

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国际医学放射学杂志 2012年第2期 185-186页

作者： j.P.Ko E.j.Berman M.Kaur j.s.babb E.Bomsztyk A.K.Greenberg 王柯懿 Department of Radiology New York University Langone Medical Center560 1st AveNew YorkNY 10016

目的确定测量实性及半实性结节的3D方法的精确度,以及其检测异常生长率的能力。材料与方法这项研究被机构审查委员会批准,符合HIPAA。免除书面知情同意。59例病人行肺癌CT筛查,共检出123个肺结节,使用3D半自

关键词：肺结节容量分析法病人生长率 CT

Wettability,reactivity,and interface structure in Mg/Ni system

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journal of Magnesium and Alloys 2024年第2期12卷 659-672页

作者： s.Terlicka N.sobczak Ł.Maj P.Darłak j.j.sobczak Institute of Metallurgy and Materials science Polish Academy of Sciences25 Reymonta Str.KrakowPoland Faculty of Foundry Engineering AGH University23 Reymonta Str.KrakowPoland

The sessile drop method was applied to the experimental investigation of the wetting and spreading behaviors of liquid Mg drops on pure Ni *** comparison,the experiments were performed in two variants:(1)using the Capillary Purification(CP)procedure,which allows the non-contact heating and squeezing of a pure oxide-free Mg drop;(2)by classical Contact Heating(CH)*** high-temperature tests were performed under isothermal conditions(CP:760℃for 30 s;CH:715℃for 300 s)using Ar+5 wt%H_(2) *** the sessile drop tests,images of the Mg/Ni couples were recorded by CCD cameras(57 fps),which were then applied to calculate the contact angles of metal/substrate *** and transmission electron microscopy analyses,both coupled with energy-dispersive X-ray spectroscopy,were used for detailed structural characterization of the solidified *** was found that an oxide-free Mg drop obtained by the CP procedure showed a wetting phenomenon on the Ni substrate(an average contact angleθs),followed by fast spreading and good wetting over the Ni substrate(θ_((CP))~20°in 5 s)to form a final contact angle ofθ_(f(CP))~18°.In contrast,a different wetting behavior was observed for the CH procedure,where the unavoidable primary oxide film on the Mg surface blocked the spreading of liquid Mg showing apparently non-wetting behavior after 300 s contact at the test ***,in both cases,the deep craters formed in the Ni substrates under the Mg drops and significant change in the structure of initially pure Mg drops to Mg-Ni alloys suggest a strong dissolution of Ni in liquid Mg and apparent values of the final contact angles measured for the Mg/Ni system.

关键词： Magnesium-based alloys sessile drop tests Capillary purification procedure Wettability Reactivity Contact angle

Thermo-kinetic characteristics on stabilizing hetero-phase interface of metal matrix composites by crystal plasticity finite element method

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journal of Materials science & Technology 2024年第2期169卷 53-67页

作者： Y.B.Zhang s.j.song F.Liu state Key Laboratory of solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using dislocation-based constitutive modeling in three-dimension crystal plasticity finite element(3D CPFE)simulations,co-deformation and instability of hetero-phase interface in different material systems were herein studied for polycrystalline metal matrix composites(MMCs).Local stress and strain fields in two types of 3layer MMCs such as fcc/fcc Cu-Ag and fcc/bcc Cu-Nb have been predicted under simple compressive ***,more severe strain-induced interface instability can be observed in the fcc/bcc systems than in the fcc/fcc systems upon refining to metallic nanolayered composites(MNCs).By detailed analysis of stress and strain localization,it has been demonstrated that the interface instability is always accompanied by high-stress concentration,i.e.,thermodynamic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then follows that the thermodynamic driving forceG and the kinetic energy barrier Q during dislocation and shear banding can be adopted to classify the deformation modes,following the so-called thermo-kinetic *** by inserting a high density of high-energy interfaces into the Cu-Nb composites,such thermo-kinetic integration at the hetero-phase interface allows a successful establishment of MMCs with the high△G-high Q deformation mode,which ensures high hardening and uniform strain distri-bution,thus efficiently suppressing the shear band,stabilizing the hetero-phase interface,and obtaining an exceptional combination in strength and *** hetero-phase interface chosen by a couple of thermodynamics and kinetics can be defined as breaking the thermo-kinetic correlation and has been proposed for artificially designing MNCs.

关键词： Thermodynamics and kinetics Physics-based constitutive modeling Hetero-phase interface Crystal plasticity finite element