نتایج جستجو برای: concrete braces
تعداد نتایج: 78961 فیلتر نتایج به سال:
T he effectiveness of brace treatment for scoliosis was controversial until recently. Brace treatment had not been proven to prevent progression of the scoliotic curve. 1 There had been no standardized study of this issue, and there were no significant differences among the types of braces used. 1 The unwillingness of children to wear braces raised concern, especially among physicians, about wh...
Custom-made and off-the-shelf functional knee orthoses from four manufacturers were evaluated. Anterior tibial translation testing was performed using a pneumatic mechanical surrogated knee. The mechanical surrogate was interfaced with a servohydraulic materials testing system, which applied all anterior/posterior displacements to an ultimate anterior load of 400 N. Comparison of the individual...
The use of buckling restrained braces (BRBs) represents one the best solutions for retrofitting or upgrading numerous existing reinforced concrete framed buildings in areas with a high seismic hazard. This study investigates effectiveness BRBs retrofit (RC) masonry infills. For this purpose, an advanced non-linear three-dimensional model building L'Aquila is developed OpenSees, by accounting ef...
In this note, we describe an error in the proof for CLRW2 given by Landecker et al. in their paper at CRYPTO 2012 on the beyond-birthday-bound security for tweakable block ciphers. We are able to resolve the issue, give a new bound for the security of CLRW2, and identify a potential limitation of this proof technique when looking to extend the scheme to provide asymptotic security.
We examine links between the theory of braces and set-theoretical solutions Yang–Baxter equation, fundamental concepts from quantum integrable systems. More precisely, we make connections with Hecke algebras identify new groups associated to set-theoretic coming braces. also construct a novel class discrete systems derive symmetries for corresponding periodic transfer matrices.
M. Naor (Ed.): TCC 2004, LCNS 2951, pages 336 352, February 2004. c © Springer-Verlag Berlin Heidelberg 2004. Abstract. We consider compositional properties of reactive systems that are secure in a cryptographic sense. We follow the well-known simulatability approach of modern cryptography, i.e., the specification is an ideal system and a real system should in some sense simulate this ideal one...
Added Damping and Stiffness (ADAS) steel dissipators are among the most classical devices installed in dissipative bracing systems for advanced seismic retrofit of frame buildings. An energy-based sizing procedure is formulated this study class dampers, where total number constituting plates directly related, without iterative steps, to supplementary damping energy required jointly reduce stres...
During human movement, the leg can be represented as a mechanical spring, with its stiffness potentially contributing to sports performance and injury prevention. Although many individuals perform athletic activities with joint stabilizers, little is known about the effects of prophylactic lower extremity braces on leg stiffness. The objective of this study was to investigate the effect of ankl...
Decreases in patellofemoral pain have been demonstrated with bracing; however, the mechanisms of pain reduction remain unclear. Our purpose was to evaluate the hypothesis that patellofemoral bracing decreases peak pressure on the retropatellar surface through an increase in patellofemoral contact area. Nine cadaveric knees were tested during simulated free-speed walking with no brace, a knee sl...
AIM This study was designed to adapt the original English-language COAS (Children's Orthodontic Attitude Survey) for third- grade schoolchildren to the Italian cultural environment and to investigate its properties in typical populations, as well as to evaluate children self-perception of their dental appearance. STUDY DESIGN The COAS questionnaire for third-grade schoolchildren was translate...
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