نتایج جستجو برای: fe modeling

تعداد نتایج: 466035  

2000
Shu-Heng Chen

Using genetic programming, this paper proposes an agentbased computational modeling of double auction (DA) markets in the sense that a DA market is modeled as an evolving market of autonomous interacting traders (automated software agents). The specific DA market on which our modeling is based is the Santa Fe DA market ([10], [11]), which in structure, is a discrete-time version of the Arizona ...

Journal: :Environmental toxicology and chemistry 2004
David B Senn Harold F Hemond

The bioavailability and transport of particle-reactive pollutants are influenced by their partitioning between dissolved and particulate phases. We explored the importance of particle complexation to the arsenic cycle in an urban lake (Upper Mystic Lake, eastern MA, USA) that experiences arsenic remobilization from contaminated sediments during seasonal hypolimnetic anoxia. Particle size distri...

2009
Sabrina De Grandi Silvano Molendi

We use XMM-Newton data to carry out a detailed study of the Si, Fe and Ni abundances in the cool cores of a representative sample of 26 local clusters. We have performed a careful evaluation of the systematic uncertainties related to the instruments, the plasma codes and the spectral modeling finding that the major source of uncertainty is in the plasma codes. Our Si, Fe, Ni, Si/Fe and Ni/Fe di...

Journal: :Bio-medical materials and engineering 2014
Siamak Kazembakhshi Yunhua Luo

Image-based finite element (FE) modeling of human bones has been increasingly applied as a useful tool in biomedical engineering. However, most existing image-based FE models assume isotropic mechanical properties for bones, although bones are typically anisotropic material. In this study, we attempted to construct anisotropic FE models from medical computed tomography (CT) scans by modifying t...

Journal: :Comp.-Aided Civil and Infrastruct. Engineering 2009
Babak Moaveni Joel P. Conte François M. Hemez

A full-scale seven-story reinforced concrete shear wall building structure was tested on the UCSDNEES shake table in the period October 2005–January 2006. The shake table tests were designed so as to damage the building progressively through several historical seismic motions reproduced on the shake table. A sensitivitybased finite element (FE) model updating method was used to identify damage ...

Journal: :NeuroImage 2009
M. Rullmann Alfred Anwander Moritz Dannhauer Simon K. Warfield Frank H. Duffy Carsten H. Wolters

The major goal of the evaluation in presurgical epilepsy diagnosis for medically intractable patients is the precise reconstruction of the epileptogenic foci, preferably with non-invasive methods. This paper evaluates whether surface electroencephalography (EEG) source analysis based on a 1 mm anisotropic finite element (FE) head model can provide additional guidance for presurgical epilepsy di...

2016
Juan Liu Zheming Wang Sara M. Belchik Marcus J. Edwards Chongxuan Liu David W. Kennedy Eric D. Merkley Mary S. Lipton Julea N. Butt David J. Richardson John M. Zachara James K. Fredrickson Kevin M. Rosso Liang Shi Violaine Bonnefoy

"Identification and characterization of MtoA: a decaheme c-type cytochrome of the neutrophilic Fe(II)-oxidizing bacterium Sideroxydans lithotrophicus ES-1" (2012). The Gram-negative bacterium Sideroxydans lithotrophicus ES-1 (ES-1) grows on FeCO 3 or FeS at oxic–anoxic interfaces at circumneutral pH, and the ES-1-mediated Fe(II) oxidation occurs extracellularly. However, the molecular mechanism...

Journal: :Computers & Graphics 2010
Igor Peterlík Mert Sedef Cagatay Basdogan Ludek Matyska

Realistic soft tissue models running in real-time are required for the development of computer-based surgical training systems. To construct a realistic soft tissue model, finite element (FE) modeling techniques are preferred over the particle-based techniques since the material properties can be integrated directly into the FE model to provide more accurate visual and haptic feedback to a user...

2012
Juan Liu Zheming Wang Sara M. Belchik Marcus J. Edwards Chongxuan Liu David W. Kennedy Eric D. Merkley Mary S. Lipton Julea N. Butt David J. Richardson John M. Zachara James K. Fredrickson Kevin M. Rosso Liang Shi

The Gram-negative bacterium Sideroxydans lithotrophicus ES-1 (ES-1) grows on FeCO(3) or FeS at oxic-anoxic interfaces at circumneutral pH, and the ES-1-mediated Fe(II) oxidation occurs extracellularly. However, the molecular mechanisms underlying ES-1's ability to oxidize Fe(II) remain unknown. Survey of the ES-1 genome for candidate genes for microbial extracellular Fe(II) oxidation revealed t...

This paper deals with the modeling of punching shear failure in reinforced concrete slabs using nonlinear finite element analysis. The 3D finite element analyses (FEA) were performed with the appropriate modeling of element size and mesh, and the constitutive modeling of concrete. The FE numerical models are validated by comparing with the experimental results obtained from tested specimens and...

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