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Direct Pointwise Comparison of FE Predictions to StereoDIC Measurements:Developments and Validation Using Double Edge-Notched Tensile Specimen

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1263-1298页

作者： Troy Myers Michael A.sutton Hubert Schreier Alistair Tofts Sreehari Rajan Kattil Department of Mechanical Engineering University of South CarolinaColumbiaSC29208USA Correlated Solutions Incorporated 121 Dutchman BlvdColumbiaSC29063USA

To compare finite element analysis(FEA)predictions and stereovision digital image correlation(StereoDIC)strain measurements at the same spatial positions throughout a region of interest,a field comparison procedure is *** procedure includes(a)conversion of the finite element data into a triangular mesh,(b)selection of a common coordinate system,(c)determination of the rigid body transformation to place both measurements and FEA data in the same system and(d)interpolation of the FEA nodal information to the same spatial locations as the StereoDIC measurements using barycentric *** an aluminum Al-6061 double edge notched tensile specimen,FEA results are obtained using both the von Mises isotropic yield criterion and Hill’s quadratic anisotropic yield criterion,with the unknown Hill model parameters determined using full-field specimen strain measurements for the nominally plane stress *** Hill’s quadratic anisotropic yield criterion,the point-by-point comparison of experimentally based full-field strains and stresses to finite element predictions are shown to be in excellent agreement,confirming the effectiveness of the field comparison process.

关键词： StereoDIC spatial co-registration data transformation finite element simulations point-wise comparison of measurements and FEA predictions double edge notch specimen model validation

Single-cell transcriptome atlases of soybean root and mature nodule reveal new regulatory programs that control the nodulation process

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Plant Communications 2024年第8期5卷 69-91页

作者： Sergio Alan Cervantes-Perez Prince Zogli Sahand Amini Sandra Thibivilliers sutton Tennant Md Sabbir Hossain Hengping Xu Ian Meyer Akash Nooka Pengchong Ma Qiuming Yao Michael J.Naldrett Andrew Farmer Olivier Martin Samik Bhattacharya Jasper Klaver Marc Libault Department of Agronomy and Horticulture University of Nebraska-LincolnLincolnNE 68503USA Division of Plant Science and Technology College of AgricultureFoodand Natural ResourcesUniversity of Missouri-ColumbiaColumbiaMO 65211USA Interdisciplinary Plant Group of Missouri-Columbia ColumbiaMO 65211USA School of Computing University of Nebraska-LincolnLincolnNE 68503USA Proteomics and Metabolomics Facility Center for BiotechnologyUniversity of Nebraska-LincolnLincolnNE 68588USA National Center for Genome Resources Santa FeNM 87505USA INRAE UniversiteParis-SaclayInstitut des Sciences des Plantes de Paris SaclayIPS2Batiment 630 Plateau du MoulonRue Noetzlin91192 Gif sur Yvette CedexFrance Resolve Biosciences Monheim am RheinGermany Present address:The School of Plant Sciences University of ArizonaTucsonAZ 85721USA Present address:GALY Co. 100 Hood Park Dr.BostonMA 02126USA

The soybean root system is *** addition to being composed of various cell types,the soybean root system includes the primary root,the lateral roots,and the nodule,an organ in which mutualistic symbiosis with N-fixing rhizobia occurs.A mature soybean root nodule is characterized by a central infection zone where atmospheric nitrogen is fixed and assimilated by the symbiont,resulting from the close cooperation between the plant cell and the *** date,the transcriptome of individual cells isolated from developing soybean nodules has been established,but the transcriptomic signatures of cells from the mature soybean nodule have not yet been *** single-nucleus RNA-seq and Molecular Cartography technologies,we precisely characterized the transcriptomic signature of soybean root and mature nodule cell types and revealed the co-existence of different sub-populations of ***-infected cells in the mature soybean nodule,including those actively involved in nitrogen fixation and those engaged in *** of the single-cell-resolution nodule transcriptome atlas and the associated gene co-expression network confirmed the role of known nodulation-related genes and identified new genes that control the nodulation *** instance,we functionally characterized the role of GmFWL3,a plasma membrane microdomain-associated protein that controls rhizobial *** study reveals the unique cellular complexity of the mature soybean nodule and helps redefine the concept of cell types when considering the infection zone of the soybean nodule.

关键词： soybean root nodule single-cell RNA-seq nanodomains

Neonatal Direct Rigid Laryngoscopy and Bronchoscopy: A Near Miss

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Open Journal of Anesthesiology 2024年第4期14卷 126-130页

作者： Dennis E. Feierman Mark Kronenfeld Jacob sutton Gil Zoizner Evan P. Salant Department of Anesthesiology Maimonides Medical Center New York USA Rutgers Robert Wood Johnson University Hospital New Brunswick USA Meir Hospital Clalit Health Services Kefar Sava Israel

Airway management is a skill necessary for healthcare providers who manage patients. Intubation is a skill that both anesthesiologists and intensivists use daily. We present a case of a neonate that developed significant worsening stridor after a successful intubation for a hernia repair. After 4 intubation attempts, with easy visualization of the vocal cords and unsuccessful placement of the endotracheal tube, the patient was emergently brought to the operating room for evaluation.

关键词： Neonate Direct Laryngoscopy Intubation

A Wavelet Neural Network Based Non-linear Model Predictive Controller for a Multi-variable Coupled Tank System

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International Journal of Automation and computing 2015年第2期12卷 156-170页

作者： Kayode Owa Sanjay Sharma Robert sutton School of Marine Science and Engineering University of Plymouth Marine and Industrial Dynamic Analysis (MIDAS) Research Group University of Plymouth

In this paper, a novel real time non-linear model predictive controller(NMPC) for a multi-variable coupled tank system(CTS) is designed. CTSs are highly non-linear and can be found in many industrial process applications. The involvement of multi-input multi-output(MIMO) system makes the design of an effective controller a challenging task. MIMO systems have inherent couplings,interactions in-between the process input-output variables and generally have an complex internal structure. The aim of this paper is to design, simulate, and implement a novel real time constrained NMPC for a multi-variable CTS with the aid of intelligent system techniques. There are two major formidable challenges hindering the success of the implementation of a NMPC strategy in the MIMO case. The first is the difficulty of obtaining a good non-linear model by training a non-convex complex network to avoid being trapped in a local minimum solution. The second is the online real time optimisation(RTO) of the manipulated variable at every sampling time.A novel wavelet neural network(WNN) with high predicting precision and time-frequency localisation characteristic was selected for an MIMO model and a fast stochastic wavelet gradient algorithm was used for initial training of the network. Furthermore, a genetic algorithm was used to obtain the optimised parameters of the WNN as well as the RTO during the NMPC strategy. The proposed strategy performed well in both simulation and real time on an MIMO CTS. The results indicated that WNN provided better trajectory regulation with less mean-squared-error and average control energy compared to an artificial neural network. It is also shown that the WNN is more robust during abnormal operating conditions.

关键词： Wavelet neural network(WNN) non-linear model predictive control(NMPC) real time practical implementation multi-input multi-outpu

Constitutive behavior and processing maps of a new wrought magnesium alloy ZE20 (Mg-2Zn-0.2Ce)

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Journal of Magnesium and Alloys 2020年第1期8卷 111-126页

作者： Scott C.sutton Alan A.Luo Department of Materials Science and Engineering The Ohio State UniversityColumbusOH 43210United States Department of Integrated Systems Engineering The Ohio State UniversityColumbusOH 43210United States Mag Specialties Inc. DenverCO 80210USA

ZE20(Mg-2Zn-0.2Ce)^2 is a new wrought magnesium alloy with improved extrudability and mechanical properties[1].To understand the constitutive behavior and workability of this new alloy,Gleeble thermomechanical testing has been carried out in this *** flow stress behavior of ZE20 was investigated between 250℃–450℃ and 10^–3 s^–1–1.0 s^–1 in isothermal *** descriptions of the flow stress are provided.A new general approach at application of the extended Ludwik equation is demonstrated and was found to be more accurate than the hyperbolic sine Arrhenius model while having a similar number of model *** maps were developed based on the experimental results and are verified with microstructural investigation.A region of safe processing with non-basal texture and high activity of dynamic recrystallization(DRX)was found between 375℃ and 450℃,from 10^–1 s^–1 to 10^–2.5 s^–1.A region of potentially safe processing with annealing that is associated with shear band nucleation of non-basal grains was identified for temperatures as low as 300℃ and rates as high as 10^–1 s^–1.

关键词： Magnesium alloys Thermomechanical processing Constitutive behavior Processing map Deformation mechanisms

Cervical Spine Alignment and Motion in the Acute Management of Potential Catastrophic Cervical Spine Injuries in Sport

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中国运动医学杂志 2008年第5期27卷 647-650页

作者： Erik E swartz Clinical Coordinator Athletic Training Education Program University of New Hampshire

The incidence of spinal cord injury in the United Statesis esti mated to be 11,000 newcases each year[1].Sport participation constitutes the fourth most common cause[1](approxi mately 8·7%)of these injuries

关键词：颈椎损伤临床分析治疗方法外伤

Crack growth of plane stress state in hardening material

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Chinese Science Bulletin 1997年第17期42卷 1487-1492页

作者： Fan, TY sutton, MA Zhang, LX Research Centre of Materials Science Beijing Institute of Technology Beijing China Department of Mechanical Engineering University of South Carolina Columbia USA

THE plane stress steady crack growth in power-law hardening materials is significant in theoretical research and practical application, especially in the application in aeronautic and aerospace industries. But people ... 详细信息

关键词： plane stress state power-law hardening steady crack growth.

Neoadjuvant therapy for pancreas cancer: Past lessons and future therapies

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World Journal of Gastroenterology 2014年第42期20卷 15564-15579页

作者： Jeffrey M sutton Daniel E Abbott Department of Surgery Division of Surgical Oncology University of Cincinnati Medical Center

Pancreatic adenocarcinoma remains a most deadly malignancy, with an overall 5-year survival of 5%. A subset of patients will be diagnosed with potentially resectable disease, and while complete surgical resection provides the only chance at cure, data from trials of postoperative chemoradiation and/or chemotherapy demonstrate a modest survival advantage over those patients who undergo resection alone. As such, most practitioners believe that completion of multimodality therapy is the optimal treatment. However, the sequence of surgery, chemotherapy and radiation therapy is frequently debated, as patients may benefit from a neoadjuvant approach by initiating chemotherapy and/or chemoradiation prior to resection. Here we review the rationale for neoadjuvant therapy, which includes a higher rate of completion of multimodality therapy, minimizing the risk of unnecessary surgical resection for patients who develop early metastatic disease, improved surgical outcomes and the potential for longer overall survival. However, there are no prospective, randomized studies of the neoadjuvant approach compared to a surgeryfirst strategy; the established and ongoing investigations of neoadjuvant therapy for pancreatic cancer are discussed in detail. Lastly, as the future of therapeutic regimens is likely to entail patient-specific genetic and molecular analyses, and the treatment that is best applied based on those data, a review of clinically relevant biomarkers in pancreatic cancer is also presented.

关键词： Pancreatic cancer Neoadjuvant therapy Chemotherapy Chemoradiation Biomarkers

Closed-form solution for shock wave propagation in density-graded cellular material under impact

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Theoretical & Applied Mechanics Letters 2021年第5期11卷 252-259页

作者： Vijendra Gupta Addis Kidane Michael sutton Department of Mechanical Engineering University of South Carolina300 Main StreetColumbiaSC 29208USA

Density-graded cellular materials have tremendous potential in structural applications where impact resistance is *** materials subjected to high impact loading result in a compaction type deformation,usually modeled using continuum-based shock *** resulting governing differential equation of the shock model is nonlinear,and the density gradient further complicates the *** studies have employed numerical methods to obtain the *** this study,an analytical closed-form solution is proposed to predict the response of density-graded cellular materials subjected to a rigid body *** for the velocity of the impinging rigid body mass,energy absorption capacity of the cellular material,and the incident stress are obtained for a single shock *** results obtained are in excellent agreement with the existing numerical solutions found in the *** proposed analytical solution can be potentially used for parametric studies and for effectively designing graded structures to mitigate impact.

关键词： Functionally graded cellular material Analytical modeling Impact response Closed-form solution Energy absorption Density gradient