نتایج جستجو برای: profile curvature

تعداد نتایج: 261674  

Journal: :Int. J. Math. Mathematical Sciences 2007
Rakesh Kumar Rachna Rani Rakesh Kumar Nagaich

The index of a metric plays significant roles in differential geometry as it generates variety of vector fields such as space-like, time-like, and light-like fileds. With the help of these vector fields, we establish interesting properties on ( )-Sasakian manifolds, which was introduced by Bejancu and Duggal [1] and further investigated by Xufeng and Xiaoli [2]. Since Sasakian manifolds with in...

Journal: :J. Applied Mathematics 2014
Mutasem S. Alkhasawneh Umi Kalthum Ngah Lea Tien Tay Nor Ashidi Mat Isa Mohammad Subhi Al-Batah

This paper proposes a decision treemodel for specifying the importance of 21 factors causing the landslides in a wide area of Penang Island, Malaysia. These factors are vegetation cover, distance from the fault line, slope angle, cross curvature, slope aspect, distance from road, geology, diagonal length, longitude curvature, rugosity, plan curvature, elevation, rain perception, soil texture, s...

2001
Claude LeBrun

We derive new, sharp lower bounds for certain curvature functionals on the space of Riemannian metrics of a smooth compact 4manifold with a non-trivial Seiberg-Witten invariant. These allow one, for example, to exactly compute the infimum of the L2-norm of Ricci curvature for all complex surfaces of general type. We are also able to show that the standard metric on any complex hyperbolic 4manif...

Journal: :Analysis and Geometry in Metric Spaces 2021

Abstract In this paper, we consider a dilation type inequality on weighted Riemannian manifold, which is classically known as Borell’s lemma in high-dimensional convex geometry. We investigate the an isoperimetric by introducing profile and estimate it one for corresponding model space under lower Ricci curvature bounds. also explore functional inequalities derived from comparison of profiles n...

Journal: :Physical review letters 2007
Wei Kang Uzi Landman

Liquid propane nanobridges were found through molecular dynamics simulations to exhibit in vacuum a symmetric break-up profile shaped as two cones joined in their apexes. With a surrounding gas of sufficiently high pressure, a long-thread profile develops with an asymmetric shape. The emergence of a long-thread profile, discussed previously for macroscopic fluid structures, originates from the ...

2013
M. A. Malkov

The two-field !pressure/density" model for the L→H transition is extended and analyzed qualitatively. In its original form the model is ambiguous as to the location of the transition within the range of bistability of particle and thermal fluxes. Here, the model is regularized by including !i" hyperdiffusion, !ii" time dependence, and !iii" curvature of the pressure profile. The regularizations...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم پایه 1394

for a given riemannian manifold (m,g),it is an interesting question to study the existence of a conformal diffemorphism (also called as a conformal transformation) f : m ! m such that the metric g? = fg has one of the following properties: (i)(m; g?) has constant scalar curvature. (ii)(m; g?) is an einstein manifold.

ژورنال: علوم آب و خاک 2016
سوری, مهشید, شیرزادی, عطااله, عرفانیان, مهدی, فرج اللهی, هانا,

The aim of this study is to prepare the groundwater spring potential map using Weight of Evidence, logistic regression, and frequency ratio methods and comparing their efficiency in Chehlgazi watershed, province of Kurdistan. At first, 17 effective factors in springs occurrence including geology, distance to fault, fault density, elevation, relative permeability of lithological units, slope ste...

ژورنال: علوم آب و خاک 2019

Today, supplying water to meet the sustainable development goals is one of the most important concerns and challenges in most countries. Therefore, identification of the areas with groundwater potential is an important tool for conservation, management and exploitation of water resources. The purpose of this research was to prepare the potential groundwater map in Nahavand, Hamedan Province, us...

The aim of this research is spatial Simulation and land subsidence susceptibility mapping using maximum entropy model in Jiroft and Anbarabad Townships. At first, land subsidence locations were recognized using extensive field surveys and subsequently the land subsidence distribution map was made in the geographic information system. Then, each of effective factors on land subsidence occurred i...

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