نتایج جستجو برای: three dimensional numerical models

تعداد نتایج: 2527223  

2015
Tom Baden Andre Maia Chagas Gregory J. Gage Timothy C. Marzullo Lucia L. Prieto-Godino Thomas Euler

[This corrects the article DOI: 10.1371/journal.pbio.1002086.].

A Khalili-Damghani M Taghavifard

In this paper, the researchers have proposed a multi-dimensional knapsack model for project capital budgeting problem in uncertain situation which has been modeled through fuzzy sets. The optimistic and pessimistic situations were considered and associated deterministic models were yielded. Numerical example has been supplied toillustrate the performance of proposed model. The results were prom...

Journal: :فیزیک زمین و فضا 0
سرمد قادر استادیار، گروه فیزیک فضا، مؤسسة ژئوفیزیک، دانشگاه تهران، ایران ابوذر قاسمی ورنامخواستی دانش آموخته کارشناسی ارشد، گروه فیزیک دریا، دانشکده علوم دریایی، دانشگاه تربیت مدرس و محقق پژوهشگاه هواشناسی و علوم جو، نور، ایران محمدرضا بنازاده ماهانی استادیار گروه فیزیک دریا، دانشکده علوم دریایی دانشگاه تربیت مدرس، نور، ایران داریوش منصوری مربی گروه فیزیک دریا، دانشکده علوم دریایی دانشگاه تربیت مدرس، نور، ایران

in recent years, the number of research works devoted to applying the highly accurate numerical schemes, in particular compact finite difference schemes, to numerical simulation of complex flow fields with multi-scale structures, is increasing. the use of compact finite-difference schemes are the simple and powerful ways to reach the objectives of high accuracy and low computational cost. compa...

Journal: :Optics letters 2011
Asia Shapira Irit Juwiler Ady Arie

We propose a novel technique for arbitrary wavefront shaping in quadratic nonlinear crystals by introducing the concept of computer-generated holograms (CGHs) into the nonlinear optical regime. We demonstrate the method experimentally showing a conversion of a fundamental Gaussian beam pump light into the first three Hermite-Gaussian beams at the second harmonic in a stoichiometric lithium tant...

Journal: :Advanced materials 2015
Sicong Shan Sung H Kang Jordan R Raney Pai Wang Lichen Fang Francisco Candido Jennifer A Lewis Katia Bertoldi

3D printing and numerical analysis are combined to design a new class of architected materials that contain bistable beam elements and exhibit controlled trapping of elastic energy. The proposed energy-absorbing structures are reusable. Moreover, the mechanism of energy absorption stems solely from the structural geometry of the printed beam elements, and is therefore both material- and loading...

Journal: :Optics express 2008
M Paturzo F Merola S Grilli S De Nicola A Finizio P Ferraro

An approach that uses an electro-optically tunable two dimensional phase grating to enhance the resolution in digital holographic microscopy is proposed. We show that, by means of a flexible hexagonal phase grating, it is possible to increase the numerical aperture of the imaging system, thus improving the spatial resolution of the images in two dimensions. The augment of the numerical aperture...

2008
Martine Ceberio Vladik Kreinovich

In this paper, we explain what are tensors and how tensors can help in computing.

Journal: :Optics express 2015
Weiwei Wan Joseph Louis Ponsetto Zhaowei Liu

The development of nanostructured metamaterials and the ability to engineer material dispersion has led to impressive advances in the diverse field of nanophotonics. Of interest to many is the enhanced ability to control, illuminate, and image with light on subwavelength scales. In this letter, we numerically demonstrate a hyperlens with unprecedented radial-resolution at 5 nm scale for both im...

2012
Kebin Shi Perry S. Edwards Jing Hu Qian Xu Yanming Wang Demetri Psaltis Zhiwen Liu

CARS holography captures both the amplitude and the phase of a complex anti-Stokes field, and can perform three-dimensional imaging by digitally focusing onto different depths inside a specimen. The application of CARS holography for bio-imaging is demonstrated. It is shown that holographic CARS imaging of sub-cellular components in live HeLa cells can be achieved.

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