نتایج جستجو برای: perimeter to area ratio
تعداد نتایج: 10744432 فیلتر نتایج به سال:
We consider the problem of minimizing the kth Dirichlet eigenvalue of planar domains with fixed perimeter and show that, as k goes to infinity, the optimal domain converges to the ball with the same perimeter. We also consider this problem within restricted classes of domains such as n−polygons and tiling domains, for which we show that the optimal asymptotic domain is that which maximises the ...
this is an original study on the effect of a polyisobutylene – polydimethylsiloxane (pibpdms) block copolymer modifier used as an interfacial active agent on the dynamics behaviour of single newtonian drops suspended in a polyisobutylene (pib) newtonian matrix. the results were divided in two sections. the first part included the experiments carried out on the non-modified and 2% block cop...
This paper shows that the prediction capability of wildfire progression can be improved by estimation a single prevailing wind vector parametrized speed and direction to drive simulation created FARSITE. Estimations these vectors are achieved in this work gradient-free optimization via grid search compares model simulations with measured perimeters, where noisy observations modeled as uncertain...
We examine the least-perimeter way to enclose given area or volume in various spaces including some spaces with density.
Corrigendum: Length of intact plasma membrane determines the diffusion properties of cellular water Sato Eida, Marc Van Cauteren, Yuka Hotokezaka, Ikuo Katayama, Miho Sasaki, Makoto Obara, Tomoyuki Okuaki, Misa Sumi & Takashi Nakamura Scientific Reports 6:19051; doi: 10.1038/srep19051; published online 11 January 2016; updated on 20 May 2016 This Article contains errors. In Figure 1j, the x-axi...
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
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