نتایج جستجو برای: direct limit

تعداد نتایج: 605098  

2016
Jeff Calder

Nondominated sorting is a combinatorial algorithm that sorts points in Euclidean space into layers according to a partial order. It was recently shown that nondominated sorting of random points has a Hamilton-Jacobi equation continuum limit. The original proof, given in [1], relies on a continuum variational problem. In this paper, we give a new proof using a direct verification argument that c...

Journal: :Physical review letters 2003
A Yamasaki W Wulfhekel R Hertel S Suga J Kirschner

We have investigated the magnetic structure of self-organized Fe islands on W(001) by means of spin-polarized scanning tunneling spectroscopy (Sp-STS). Single-domain, simple vortex, and distorted vortex states have been observed. The high resolution magnetic images were used to experimentally determine the single-domain limit. The experimental structures were compared with results of micromagne...

In open-pit mine planning, the design of the most profitable ultimate pit limit is a prerequisite to developing a feasible mining sequence. Currently, the design of an ultimate pit is achieved through a computer program in most mining companies. The extraction of minerals in open mining methods needs a lot of capital investment, which may take several decades. Before the extraction, the p...

Background and objectives: Methyl mercury can carry out harmful effects on the reproductive, respiratory, and nervous system of human. Moreover, mercury is known as the most toxic heavy metal in nature. Fish and seafood consumption is the major MeHg exposure route for human. The present study tries to cover researches which have been conducted on mercury levels in 21 species of fish from Persia...

D. R. McDonald,

The local limit theorem describes how the density of a sum of random variables follows the normal curve. However the local limit theorem is often seen as a curiosity of no particular importance when compared with the central limit theorem. Nevertheless the local limit theorem came first and is in fact associated with the foundation of probability theory by Blaise Pascal and Pierre de Fer...

2016
Bret Stanford Philip Beran

The usefulness of flutter as a design metric is diluted for wings with destabilizing (softening) nonlinearities, as a stable high-amplitude limit cycle (subcritical) may exist for flight speeds well below the flutter point. It is thus desired to design aeroelastic structures such that the post-flutter behavior is as benign (i.e., supercritical) as possible, among the other constraints commonly ...

2016
A. V. Arefiev V. N. Khudik A. P. L. Robinson G. Shvets L. Willingale M. Schollmeier

Journal: :journal of chemical health risks 0
behrouz akbari-adergani food and drug laboratory research center, food and drug organization, ministry of health and medical educa-tion, tehran, iran soheyl eskandari food and drug laboratory research center, food and drug organization, ministry of health and medical educa-tion, tehran, iran asad hashemi department of wood and paper science and technology, university of tehran, tehran, iran maral shekarchi food and drug laboratory research center, food and drug organization, ministry of health and medical educa-tion, tehran, iran

in this study, residual amount of pentachlorophenol (pcp) as the most important paper preservative, which is extremely hazardous pollutant, was determined in some tissue papers and napkins. twenty-five samples of two producing hygienic paper factories prepared from virgin and secondary pulp were analyzed for the presence of trace amount of pcp. the analytical procedure involved direct extractio...

Journal: :the iranian journal of pharmaceutical research 0
samira eslamizad department of pharmacology and toxicology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran yazdanpanah hassan yazdanpanah department of pharmacology and toxicology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran katayoun javidnia medicinal and natural products chemistry research centre, shiraz university of medical sciences, shiraz, iran ramezan sadeghi department of pharmacology and toxicology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran mitra bayat phytochemistry research center, shahid beheshti university of medical sciences, tehran, iran. sara shahanipour medicinal and natural products chemistry research centre, shiraz university of medical sciences, shiraz, iran

a fast and simple modified quechers (quick, easy, cheap, rugged and safe) extraction method based on spiked calibration curves and direct sample introduction was developed for determination of benzo[a]pyrene (bap) in bread by gas chromatography-mass spectrometry single quadrupole selected ion monitoring (gc/ms-sq-sim). sample preparation includes extraction of bap into acetone followed by clean...

2006
Jason F. Rowe Jaymie M. Matthews Sara Seager David B. Guenther Slavek M. Rucinski David Dunlap

We present space-based photometry of the transiting exoplanetary system HD 209458 obtained with the MOST (Microvariablity and Oscillations of STars) satellite, spanning 14 days and covering 4 transits and 4 secondary eclipses. The HD 209458 photometry was obtained in MOST’s lower-precision Direct Imaging mode, which is used for targets in the brightness range 6.5 ≥ V ≥ 13. We describe the photo...

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