Spin gap of the three-leg S=3/2 Heisenberg tube
, 2011 The ground-state properties of the three-leg S=3/2 Heisenberg tube are studied using the density-matrix renormalization group method. We find that the spin-excitation gap associated with a spontaneous dimerization opens for the whole coupling regime, as ...
Fuji, Y., Nishimoto, S., Ohta, Y.
core +1 more source
Charge density plateaux and insulating phases in the $t-J$ model with ladder geometry
, 2003 We discuss the occurrence and the stability of charge density plateaux in ladder-like $t-J$ systems (at zero magnetization M=0) for the cases of 2- and 3-leg ladders.
Fledderjohann, A. +2 more
core +2 more sources
Analysis of walking with unilateral exoskeleton assistance compared to bilateral assistance with matched work [PDF]
, 2015 The finding of the highest negative metabolic rate versus mechanical work ratio in the Bilateral Matched Total Work condition means that if a constrained amount of mechanical work is available (e.g.
De Clercq, Dirk +3 more
core +1 more source
Correlations in Quantum Spin Ladders with Site and Bond Dilution
, 2012 We investigate the effects of quenched disorder, in the form of site and bond dilution, on the physics of the $S=1/2$ antiferromagnetic Heisenberg model on even-leg ladders.
D. Stauffer +4 more
core +1 more source
Developing an Overbooking Fuzzy-Based Mathematical Optimization Model for Multi-Leg Flights [PDF]
, 2020 Overbooking is one of the most vital revenue management practices that is used in the airline industry. Identification of an overbooking level is a challenging task due to the uncertainties associated with external factors, such as demand for tickets ...
Abu Monshar, Anees +2 more
core +2 more sources
The walking robot project [PDF]
, 1991 A walking robot was designed, analyzed, and tested as an intelligent, mobile, and a terrain adaptive system. The robot's design was an application of existing technologies.
Bennett, M. +3 more
core +1 more source
Low-energy excitations in 2-leg and 3-leg quantum spin ladders
, 1997 Low-energy excitations in spin 1/2 antiferromagnetic Heisenberg spin ladders are studied by bosonization and gauge theoretical description. It is explicitly shown that zero modes in the bosonization play an essentially important role.
Abdalla +15 more
core +1 more source
Associations between sedentary time, physical activity and bone health among older people using compositional data analysis [PDF]
, 2018 Introduction : Aging is associated with a progressive decrease in bone mass (BM), and being physical active is one of the main strategies to combat this continuous loss.
Alegre, Luis M. +7 more
core +3 more sources
Using stiffness to assess injury risk:comparison of methods for quantifying stiffness and their reliability in triathletes [PDF]
, 2018 Background: A review of the literature has indicated that lower body stiffness, defined as the extent to which the lower extremity joints resists deformation upon contact with the ground, may be a useful measure for assessing Achilles injury risk in ...
Hume, Patria A +2 more
core +2 more sources
High-Impact Mechanical Loading Increases Bone Material Strength in Postmenopausal Women-A 3-Month Intervention Study. [PDF]
, 2018 Bone adapts to loading in several ways, including redistributing bone mass and altered geometry and microarchitecture. Because of previous methodological limitations, it is not known how the bone material strength is affected by mechanical loading in ...
Hellgren, Martin +7 more
core +2 more sources