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Peri-Net-Pro: the neural processes with quantified uncertainty for crack patterns

Applied Mathematics and Mechanics(English Edition) 2023年第7期44卷 1085-1100页

作者： M.KIM g.lin Samsung Electronics Yongin-siGyeonggi-do 17113Republic of Korea Department of Mathematics Purdue UniversityWest LafayetteIN 47907-2067U.S.A. School of Mechanical Engineering Purdue UniversityWest LafayetteIN 47907-2067U.S.A.

This paper develops a deep learning tool based on neural processes(NPs)called the Peri-Net-Pro,to predict the crack patterns in a moving disk and classifies them according to the classification modes with quantified *** particular,image classification and regression studies are conducted by means of convolutional neural networks(CNNs)and ***,the amount and quality of the data are enhanced by using peridynamics to theoretically compensate for the problems of the finite element method(FEM)in generating crack pattern ***,case studies are conducted with the prototype microelastic brittle(PMB),linear peridynamic solid(LPS),and viscoelastic solid(VES)models obtained by using the peridynamic *** case studies are performed to classify the images by using CNNs and determine the suitability of the PMB,LBS,and VES ***,a regression analysis is performed on the crack pattern images with NPs to predict the crack *** regression analysis results confirm that the variance decreases when the number of epochs increases by using the *** training results gradually improve,and the variance ranges decrease to less than *** main finding of this study is that the NPs enable accurate predictions,even with missing or insufficient training *** results demonstrate that if the context points are set to the 10th,100th,300th,and 784th,the training information is deliberately omitted for the context points of the 10th,100th,and 300th,and the predictions are different when the context points are significantly ***,the comparison of the results of the 100th and 784th context points shows that the predicted results are similar because of the gaussian processes in the ***,if the NPs are employed for training,the missing information of the training data can be supplemented to predict the results.

关键词： neural process(NP) peridynamics crack pattern molecular dynamic(MD)simulation machine learning gaussian process regression convolutional neural network(CNN)

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Cultivated Land Changes and Their Driving Forces——A Satellite Remote Sensing Analysis in the Yellow River Delta,China

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Pedosphere 2004年第1期14卷 93-102页

作者： ZHAOgeng-Xing g.lin J.J.FLETCHER C.YUILL CollegeofResourcesandEnvironment ShandongAgriculturalUniversityTaian271018（China） RegionalResearchInstitute WestVirginiaUniversityMorgantownWV26505-6300（USA）

Taking Kenli County in the Yellow River Delta, China, as the study area and using digital satellite remote sensing techniques, cultivated land use changes and their corresponding driving forces were explored in this study. An interactive interpretation and a manual modification procedure were carried out to acquire cultivated land information. An overlay method based on classification results and a visual change detection method which was supported by land use maps were employed to detect the cultivated land changes. Based on the changes that were revealed and a spatial analysis between cultivated land use and related natural and socio-economic factors, the driving forces for cultivated land use changes in the study area were *** results showed a decrease in cultivated land in Kenli County of 5321.8 ha from 1987 to 1998, i.e.,an average annual decrement of 483.8 ha, which occurred mainly in the central paddy field region and the northeast dry land region. Adverse human activities, soil salinization and water deficiencies were the driving forces that caused these cultivated land use changes.

关键词： cultivated land driving force satellite remote sensing the yellow riverdelta

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Numerical investigation on heat transfer in an advanced new leading edge impingement cooling configuration

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Propulsion and Power Research 2015年第4期4卷 179-189页

作者： g.lin K.Kusterer A.H.Ayed D.Bohn T.Sugimoto R.Tanaka M.Kazari B&B-AgEMA gmbH Aachen D-52070Germany RWTH Aachen University Aachen D-52062Germany Kawasaki Heavy Industries LTD.Gas Turbine&Machinery CompanyAkashi 673-8666Japan Kawasaki Heavy Industries LTD.Technical InstituteAkashi 673-8666Japan

It is known that the leading edge has the most critical heat transfer area of a gas turbine *** highest heat transfer rates on the airfoil can always be found on the stagnation region of the leading *** order to further improve the gas turbine thermal efficiency the development of more advanced internal cooling configurations at leading edge is very *** the state of the art leading edge cooling configuration a concave channel with multi inline jets has been widely used in most of the ***,this kind of configuration also generates strong spent flow,which shifts the impingement off the stagnation point and weakens the impingement heat *** order to solve this problem a new internal cooling configuration using double swirl chambers in gas turbine leading edge has been developed and introduced in this *** double swirl chambers cooling(DSC)technology is introduced by the authors and contributes a significant enhancement of heat transfer due to the generation of two anti-rotated *** DSC-cooling,the reattachment of the swirl flows always occurs in the middle of the chamber,which results in a linear impingement *** with the reference standard impingement cooling configuration this new cooling system provides a much more uniform heat transfer distribution in the chamber axial direction and also provides a much higher heat transfer *** this study,the influences of different geometrical parameters *** ratio of two cylinder channels,the jet inlet hole configurations and radius of blunt protuberances in DSC have been investigated *** results show that in the DSC cooling system the jet inlet hole configurations have large influences on the thermal *** rectangular inlet holes,especially those with higher aspect ratios,show much better heat transfer enhancement than the round inlet ***,as the price for it the total pressure drop is *** blunt protuberances instead of

关键词： gas turbine Impingement cooling Leading edge Double swirl chambers

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An Experi mental Study on Wave-Induced Dynamic Stresses in Seabed

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China Ocean Engineering 2006年第1期20卷 27-44页

作者： S.C.Chang L.K.Chien J .g.lin Y.F.Chiu Department of Harbor and River Engineering National Taiwan Ocean University Taiwan China Harbor and Marine Technology Center Taiwan China

A series of hydraulic model tests with horizontal movable seabed under regular wave actions have been carried out to investigate the dynamic interactions between water waves and seabed soil. Seabed dynamic stresses from experiments are, tound to differ from theoretical resuhs. The response of p0 in permeable seabed has a small decay and phase shift to the nonlinear wave actions, and the dynamic stresses, σs/p0, σh/p0 and u/p0, contain different phase shift characteristics. Such phenomena will strongly affect the dynamic stress path in seabed. If the phase shifts of σs. and σh are neglected, the stress path will become a straight line; otherwise, it will become an elliptical curve. In phase shift cases, the long axis of the p - q diagram will be shortened when the depth increases, and the short axis will become longer when the phase shift increases. For the p＇ - q＇ diagram, the larger the phase lag of u, the longer the short axis. Relative results offer useful information for the analysis of seabed stability.

关键词： wave-induced dynamic stresses movable seabed hydraulic model test stress path

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The effects of aging on microstructure and superelasticity of the cold-rolled Ti-7.5Nb-4Mo-2Sn(at%) biomedical alloy

The effects of aging on microstructure and superelasticity o...

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第十二届全国物理力学学术会议

作者： J.-g.lin D.-C.Zhang Faculty of Material and Optical-Electronic Physics Key Laboratory of Low Di-mensional Materials and Application Technology of Ministry of EducationXiangtan University

Effects of aging temperature and time on microstructure and superelasticity of Ti- 7.5Nb-4Mo-2Sn(at%) biomedical alloys were *** ingot of the alloy was fabricted by an arc melting method using pure Ti,Nb,Mo and Sn as raw *** severe cold-rolling,the plate was quenched at 800℃for 1800 s and followed by aging at 500℃,600℃and 700℃for 300 s, and for 60,300,600 and 1800 s at 600℃,then the air was cooled to room *** ageing,α",α and ω phases were precipitated in the *** aging temperature increasing,α",α and ω phases in the alloys *** aging time prolonging,ω phases convert toαphases. The aging alloys exhibit good superelasticity with high σ andηdue to the reinforcement ofαandωphases.

关键词： aging microstructure superelasticity biomedical alloy

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Fabrication of all-transparent polymer-based and encapsulated nanofluidic devices using nano-indentation lithography

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Microsystems & Nanoengineering 2017年第1期3卷 373-381页

作者： Cong Wu Tiffany g.lin Zhikun Zhan Yi Li Steve C.H.Tung William C.Tang Wen J.Li Department of Mechanical and Biomedical Engineering City University of Hong KongHong Kong 999077China Department of Biomedical Engineering University of CaliforniaIrvineCA 92697-2715USA Department of Automation Yanshan UniversityQinghuangdao 066004China Department of Mechanical Engineering University of ArkansasFayettevilleAR 72701USA

In this paper,we describe a novel and simple process for the fabrication of all-transparent and encapsulated polymeric nanofluidic devices using nano-indentation ***,a nanomechanical probe is used to‘scratch’nanoscale channels on polymethylmethacrylate(PMMA)substrates with sufficiently high ***,polydimethylsiloxane(PDMS)is used twice to duplicate the nanochannels onto PDMS substrates from the‘nano-scratched’PMMA substrates.A number of experiments are conducted to explore the relationships between the nano-indentation parameters and the nanochannel dimensions and to control the aspect ratio of the fabricated *** addition,traditional photolithography combined with soft lithography is employed to fabricate microchannels on another PDMS‘cap’*** manually aligning the substrates,all uncovered channels on two separate PDMS substrates are bonded to achieve a sealed and transparent nanofluidic device,which makes the dimensional transition from microscale to nanoscale *** smallest dimensions of the achievable nanochannels that we have demonstrated thus far are of~20 nm depth and~800 nm width,with lengths extendable beyond 100μ*** flow experiments are performed to verify the reliability of the *** types of colloidal solution are used to visualize the fluid flow through the nanochannels,that is,ethanol is mixed with gold colloid or fluorescent dye(fluorescein isothiocyanate),and the flow rate and filling time of liquid in the nanochannels are estimated based on time-lapsed image *** simplicity of the fabrication process,bio-compatibility of the polymer substrates,and optical transparency of the nanochannels for flow visualization are key characteristics of this approach that will be very useful for nanofluidic and biomolecular research applications in the future.

关键词： indentation lithography nanochannel nanofluidic device nanofluidic flow

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Nomograms and prognosis for superficial esophageal squamous cell carcinoma

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World Journal of gastroenterology 2024年第10期30卷 1291-1294页

作者： Hong Tao lin Ahmed Abdelbaki Somashekar g Krishna Department of Internal Medicine Division of GastroenterologyHepatology and NutritionThe Ohio State University Wexner Medical CenterColumbusOH 43210United States

In recent years,endoscopic resection,particularly endoscopic submucosal dis-section,has become increasingly popular in treating non-metastatic superficial esophageal squamous cell carcinoma(ESCC).In this evolving paradigm,it is crucial to identify factors that predict higher rates of lymphatic invasion and poorer *** tumor size,deeper invasion,poorer differentiation,more infiltrative growth patterns(INF-c),higher-grade tumor budding,positive lymphovascular invasion,and certain biomarkers have been associated with lymph node metastasis and increased morbidity through retrospective reviews,leading to the construction of comprehensive nomograms for outcome *** validated by future prospective studies,these nomograms would prove highly applicable in guiding the selection of treatment for superficial ESCC.

关键词： Esophageal cancer Esophageal squamous cell carcinoma Esophageal resection Endoscopic mucosal resection Endoscopic submucosal dissection Lymph node metastasis

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A fast forward computational method for nuclear measurement using volumetric detection constraints

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Nuclear Science and Techniques 2024年第2期35卷 47-63页

作者： Qiong Zhang.lin-Lv lin University of Electronic Science and Technology of China Chengdu 610000China

Owing to the complex lithology of unconventional reservoirs,field interpreters usually need to provide a basis for interpretation using logging simulation *** the various detection tools that use nuclear sources,the detector response can reflect various types of information of the *** Monte Carlo method is one of the primary methods used to obtain nuclear detection responses in complex ***,this requires a computational process with extensive random sampling,consumes considerable resources,and does not provide real-time response ***,a novel fast forward computational method(FFCM)for nuclear measurement that uses volumetric detection constraints to rapidly calculate the detector response in various complex environments is ***,the data library required for the FFCM is built by collecting the detection volume,detector counts,and flux sensitivity functions through a Monte Carlo ***,based on perturbation theory and the Rytov approximation,a model for the detector response is derived using the flux sensitivity function method and a one-group diffusion *** environmental perturbation is constrained to optimize the model according to the tool structure and the impact of the formation and borehole within the effective detection ***,the method is applied to a neutron porosity tool for *** various complex simulation environments,the maximum relative error between the calculated porosity results of Monte Carlo and FFCM was 6.80%,with a rootmean-square error of 0.62 *** field well applications,the formation porosity model obtained using FFCM was in good agreement with the model obtained by interpreters,which demonstrates the validity and accuracy of the proposed method.

关键词： Nuclear measurement Fast forward computation Volumetric constraints

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伴宫颈间质浸润的子宫内膜癌:3 T MR扩散加权成像与动态增强成像的诊断准确性

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国际医学放射学杂志 2017年第4期 480-481页

作者： g.lin Y.T.Huang A.Chao Y.C.lin L.Y.Yang R.C.Wu 朱珍 Department of Medical Imaging and Intervention Institute for Radiological Research Chang Gung Memorial Hospital at Linkouand Chang Gung University

摘要目的比较扩散加权（DW）成像和动态增强（DCE）MR成像在检测子宫内膜癌宫颈间质浸润的诊断准确性。方法83例连续的子宫内膜癌女性病人进行术前3 T MRI检查,包括T;W、DW（b=0、1 000 s/mm;）和DCE MRI。以组织病理学检查为金标准,2...

摘要目的比较扩散加权（DW）成像和动态增强（DCE）MR成像在检测子宫内膜癌宫颈间质浸润的诊断准确性。方法83例连续的子宫内膜癌女性病人进行术前3 T MRI检查,包括T;W、DW（b=0、1 000 s/mm;）和DCE MRI。以组织病理学检查为金标准,2位放射科医师独立评估宫颈间质浸润的表现。结果由阅片者1和阅片者2评估宫颈间质浸润的

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The Existence of a Meridional Curve in Closed Incompressible Surfaces in Fully Alternating.link Complements

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Chinese Annals of Mathematics,Series B 2024年第1期45卷 73-80页

作者： Wei lin School of Mathematical Sciences Dalian University of TechnologyDalian 116024LiaoningChina

Menasco showed that a closed incompressible surface in the complement of a non-split prime alternating.link in S^(3) contains a circle isotopic in the link complement to a meridian of the *** on this result,he was able to argue the hyperbolicity of non-split prime alternating.links in *** et *** that if F■S×I\L is an essential torus,then F contains a circle which is isotopic in S×I\L to a meridian of *** author generalizes his result as follows:Let S be a closed orientable surface,L be a fully alternating.link in S×I\If F ■ S×I\L is a closed essential surface,then F contains a circle which is isotopic in S×I\L to a meridian of L.

关键词： Fully alternating Incompressible surfaces Meridionally incompressible

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