Results 1 to 10 of about 2,193,936 (132)
Self-intersection numbers of length-equivalent curves on surfaces [PDF]
Experimental Mathematics, 2013 Two free homotopy classes of closed curves in an orientable surface with negative Euler characteristic are said to be length equivalent if for any hyperbolic structure on the surface, the length of the geodesic in one class is equal to the length of the ...
Chas, Moira
core +2 more sources
Evaluation of damage to horizontal wells through equivalent horizontal well length
Petroleum Exploration and Development, 2013 The skin factor and additional pressure drop which are used to evaluate the formation damage of vertical wells can not accurately be applied to horizontal wells. A new model for evaluating formation damage of horizontal wells is presented. This method is
Bin LIU +3 more
doaj +3 more sources
An appraisal of the Ontario equivalent base length [PDF]
, 1980 Synopsis This report examines the equivalent base length concept used for the development of the Ontario Highway Bridge Design truck. As used in Ontario, the concept does not rely on the assumption that a vehicle can be described by two variables, the weight W and equivalent base length BM, but rather that a vehicle can be described by a series of ...
O'Connor, C. (Colin)
core +4 more sources
A Study on Comparison of Equivalent Length
Fire Science and Engineering, 2012 We have studied on equivalent length tables which are used to calculate the friction loss of pipe fittings and valves of water-based fire systems in Korea. Three kinds of equivalent length tables are mainly used and unfortunately, the most extensively used table is not ascertained the reliable source.
exaly +2 more sources
Remote Sensing, 2023 The present study investigates the influences of stratospheric quasi-biennial oscillation (QBO) and El Niño–Southern Oscillation (ENSO) on the intensity of stratospheric isentropic mixing based on ERA-Interim and MERRA-2 reanalysis products.
Jing Liang +3 more
doaj +1 more source
Length and Eigenvalue Equivalence [PDF]
International Mathematics Research Notices, 2007 Two Riemannian manifolds are called eigenvalue equivalent when their sets of eigenvalues of the Laplace-Beltrami operator are equal (ignoring multiplicities). They are (primitive) length equivalent when the sets of lengths of their (primitive) closed geodesics are equal.
Leininger, Christopher J. +3 more
openaire +2 more sources
Interpretation of non-conventional miniaturized creep test: derivation of equivalent gauge length
Journal of Materials Research and Technology, 2023 The objective of this paper is to clarify the nature of the equivalent gauge length of miniaturized creep test methods. A mechanics-based approach was employed to allow conventional uniaxial creep data to be obtained from non-conventional miniaturized ...
Wei Sun +6 more
doaj +1 more source
Relationship between axial length and spherical equivalent refraction in Chinese children
Advances in Ophthalmology Practice and Research, 2021 Purpose: To evaluate the relationship between axial length (AL) and spherical equivalent refraction (SER) in Chinese children. Methods: This hospital-based cross-sectional study included 1208 eyes (from 617 Chinese boys and 591 Chinese girls), ranging ...
Shuying Chen +4 more
doaj +1 more source
An Accurate Measurement Method for Tension Force of Short Cable by Additional Mass Block
Advances in Materials Science and Engineering, 2021 The equivalent effective length parameter is introduced into the vibration equation of short cable; that is, the boundary condition that affects the test accuracy of short cable force is equivalent to the calculated length of cable.
Shuichang Li +6 more
doaj +1 more source
Distributed Optical Fiber-Based Approach for Soil–Structure Interaction
Sensors, 2020 Scour is a hydraulic risk threatening the stability of bridges in fluvial and coastal areas. Therefore, developing permanent and real-time monitoring techniques is crucial.
Nissrine Boujia +4 more
doaj +1 more source