We consider electron transport through a quantum point contact between compressible Quantum Hall liquids and derive the contact’s impedance function for both diffusive and ballistic regimes of the bulk electron motion. In either regime, the tunneling current deviates from a power-law behavior I ∼ V 1/ν expected on the basis of the single-mode chiral Luttinger liquid phenomenology.

V-band clamps offer an efficient clamping solution in diverse applications including process equipment, exhaust systems and air handling. This paper studies the distribution of interface contact pressure between the V-band and flange when the coupling is established. The determination of the contact area and pressure distribution in a joint is essential information, as it determines the integri...

A three-dimensional unilateral contact problem for articular cartilage layers attached to subchondral bones shaped as elliptic paraboloids is considered in the framework of the biphasic cartilage model. The main novelty of the study is in accounting not only for the normal (vertical), but also for tangential vertical (horisontal) displacements of the contacting surfaces. Exact general relations...

The purpose of this study was to determine if a horizontal cleavage lesion (HCL) of the posterior horn of the medial meniscus would result in changes to tibiofemoral contact mechanics, as measured by peak contact pressure and contact area, which can lead to cartilage degeneration. To study this, 10 cadaveric knees were tested in a rig where forces were applied (500 N Compression, 100 N shear, 2...

Our paper addresses the question of covariation between intraoral air pressure and size of contact area between tongue and palate during the articulation of the Norwegian stop consonants /t/ and /d/. An EPG investigation of the two plosives shows a larger contact area between tongue and palate for /t/ than for /d/. An investigation of intraoral air pressure during the articulation of the two pl...

CONTEXT Self-myofascial release (SMR) is a technique used to treat myofascial restrictions and restore soft-tissue extensibility. PURPOSE To determine whether the pressure and contact area on the lateral thigh differ between a Multilevel rigid roller (MRR) and a Bio-Foam roller (BFR) for participants performing SMR. PARTICIPANTS Ten healthy young men and women. METHODS Participants perfor...

This paper presents methodologies to discretise nominal robots paths extracted from 3-D CAD drawings. Behind robot path discretization is the ability to have a robot adjusting the traversed paths so that the contact between robot tool and work-piece is properly maintained. In addition, a hybrid force/motion control system based on Fuzzy-PI control is proposed to adjust robot paths with external...

Elements of constructions modern military and civil vehicles usually work in conditions high contact loads. Аt the stage their creation, strength studies are carried out using traditional models bodies nominal shape. Нowever, real structural elements have deviations from such models, which due to design technological factors: macrodeviation shape, surface roughness, strengthening etc. Such pert...