Results 71 to 80 of about 520,948 (231)

Open Book Foliations

, 2013
We study open book foliations on surfaces in 3-manifolds, and give applications to contact geometry of dimension 3. We prove a braid-theoretic formula of the self-linking number of transverse links, which reveals an unexpected link to the Johnson-Morita ...
Ito, Tetsuya, Kawamuro, Keiko
core   +1 more source

Estimating impacts of emission specific characteristics on vehicle operation for quantifying air pollutant emissions and energy use

Journal of Traffic and Transportation Engineering (English ed. Online), 2017
This paper proposes and illustrates a methodology to predict the fraction of time motor vehicles spend in different operating conditions from readily observable variables called emission specific characteristics (ESC).
K.S. Nesamani, Jean-Daniel Saphores, Michael G. McNally, R. Jayakrishnan   +3 more
doaj   +1 more source

Effect of geometry of tank on the thermal characteristics of waxy crude oil during its static cooling

Case Studies in Thermal Engineering, 2020
With the purpose of revealing the inner link between the thermal characteristics and geometry of tank, the physical and mathematical models of waxy crude oil during static cooling process under different geometric sizes are established. Based on the data
Jian Zhao, Junyang Liu, Dongjie Qu, Hang Dong, Weiqiang Zhao   +4 more
doaj  

Large N asymptotics of orthogonal polynomials, from integrability to algebraic geometry [PDF]

, 2005
In this short lecture, we compute asymptotics of orthogonal polynomials, from a saddle point approximation. This is an example of a calculation which shows the link between integrability, algebraic geometry and random matrices.Comment: Proceedings Les ...
Eynard, Bertrand
core   +3 more sources

Geometrical enhancement of the electric field: Application of fractional calculus in nanoplasmonics

, 2011
We developed an analytical approach, for a wave propagation in metal-dielectric nanostructures in the quasi-static limit. This consideration establishes a link between fractional geometry of the nanostructure and fractional integro-differentiation.
Baskin, E., Iomin, A.
core   +1 more source

cis-Dichloridobis(N,N,N′,N′-tetramethylethane-1,2-diamine)platinum(II)

Acta Crystallographica Section E, 2012
In the title complex, [PtCl2(C6H16N2)], the PtII atom adopts a distorted cis-PtN2Cl2 square-planar coordination geometry. The five-membered chelate ring adopts a twisted conformation.
Abdullah M. Asiri, Muhammad Nadeem Arshad, Muhammad Ishaq, Khalid A. Alamry, Tanveer Hussain Bokhari   +4 more
doaj   +1 more source

Instability of a Möbius Strip Minimal Surface and a Link with Systolic Geometry [PDF]

Physical Review Letters, 2015
We describe the first analytically tractable example of an instability of a nonorientable minimal surface under parametric variation of its boundary. A one-parameter family of incomplete Meeks Möbius surfaces is defined and shown to exhibit an instability threshold as the bounding curve is opened up from a double-covering of the circle.
Pesci, Adriana I., Goldstein, Raymond E., Alexander, Gareth P., Moffatt, H. Keith   +3 more
openaire   +4 more sources

On the Alexandrov Topology of sub-Lorentzian Manifolds

, 2013
It is commonly known that in Riemannian and sub-Riemannian Geometry, the metric tensor on a manifold defines a distance function. In Lorentzian Geometry, instead of a distance function it provides causal relations and the Lorentzian time-separation ...
A Korolko, A Korolko, A Korolko, AA Agrachev, B O'Neill, DC Chang, E Grong, JK Beem, L Capogna, M Grochowski, M Grochowski, M Grochowski, PK Rashevski, R Montgomery, R Montgomery, RS Strichartz, SW Hawking, W Liu, WL Chow   +18 more
core   +1 more source

Ideal Hopf-link mode in phonon material Ba2OsH6

JPhys Materials
Phonon systems have emerged as potential platforms for exploring nontrivial band topologies. Meanwhile, two (or more) closed nodal lines (CNLs) may nest with each other and form a Hopf-link mode in momentum space.
Jianhua Wang, Weizhen Meng, Wenhong Wang, Zhenxiang Cheng, Shifeng Qian, Xiaotian Wang   +5 more
doaj   +1 more source