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282
Dictionary of protein secondary structure: pattern recognition of hydrogenbonded and geometrical features
, 1983
"... For a successful analysis of the relation between amino acid sequence and protein structure, an unambiguous and physically meaningful definition of secondary structure is essential. We have developed a set of simple and physically motivated criteria for secondary structure, programmed as a patternr ..."
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Cited by 2096 (5 self)
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. ” Geometric structure is defined in terms of the concepts torsion and curvature of differential geometry. Local chain “chirality ” is the torsional handedness of four consecutive Ca positions and is positive for righthanded helices and negative for ideal twisted @sheets. Curved pieces are defined as “bends
Absolute torsion and etainvariant
 234 (2000) 339–349, MR 1765885, Zbl 0955.57022
"... In a recent joint work with V. Turaev [6], we defined a new concept of combinatorial torsion which we called absolute torsion. Compared with the classical Reidemeister torsion, it has the advantage of having a welldetermined sign. Also, the absolute torsion is defined for arbitrary orientable flat ..."
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Cited by 9 (0 self)
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In a recent joint work with V. Turaev [6], we defined a new concept of combinatorial torsion which we called absolute torsion. Compared with the classical Reidemeister torsion, it has the advantage of having a welldetermined sign. Also, the absolute torsion is defined for arbitrary orientable flat
Torsion Dynamics of Molecular Systems
 Phys. Rev. E
, 1996
"... Based on the concept of free energy, we derive a Hamiltonian formulation for molecular dynamics in torsion space. The appropriate reaction coordinates for the free energy calculations are defined in terms of soft constraints as introduced by B.R. Brooks, J. Zhou, and S. Reich in the context of molec ..."
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Cited by 6 (4 self)
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Based on the concept of free energy, we derive a Hamiltonian formulation for molecular dynamics in torsion space. The appropriate reaction coordinates for the free energy calculations are defined in terms of soft constraints as introduced by B.R. Brooks, J. Zhou, and S. Reich in the context
Stryk, “Conception and Evaluation of a Novel Variable Torsion Stiffness for Biomechanical Applications
 in IEEE International Conference on Biomedical Robotics and Biomechatronics
, 2012
"... AbstractThis paper proposes a novel variable torsion stiffness (VTS) aiming on biomechanical applications like prosthetic knee joints. By varying the effective length of a torsional elastic element via a relocatable counter bearing, the stiffness of a rotational joint is adjusted. This functional ..."
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Cited by 4 (2 self)
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AbstractThis paper proposes a novel variable torsion stiffness (VTS) aiming on biomechanical applications like prosthetic knee joints. By varying the effective length of a torsional elastic element via a relocatable counter bearing, the stiffness of a rotational joint is adjusted. This functional
Performance and Control Optimisations of a UAV Using the Adaptive Torsion Wing Concept
"... Abstract This paper presents the Adaptive Torsion Wing (ATW) concept and performs two multidisciplinary design optimisation (MDO) studies by employing this novel concept across the wing of a representative UAV. The ATW concept allows varying the torsional stiffness of a twospar wingbox by changing ..."
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Abstract This paper presents the Adaptive Torsion Wing (ATW) concept and performs two multidisciplinary design optimisation (MDO) studies by employing this novel concept across the wing of a representative UAV. The ATW concept allows varying the torsional stiffness of a twospar wingbox
GENERALISING THE CONCEPT OF MAXIMAL SYMMETRY OF SPACETIMES IN THE PRESENCE OF TORSION a
, 1994
"... A possible generalisation is given to the meaning of maximal symmetry in the presence of torsion. PACS NO: 04.20.cv; 02.40.ky; 11.27 + d 1 In N dimensions, a metric that admits the maximum number N(N +1)/2 of Killing vectors is said to be maximally symmetric.A maximally symmetric space is homogeneou ..."
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A possible generalisation is given to the meaning of maximal symmetry in the presence of torsion. PACS NO: 04.20.cv; 02.40.ky; 11.27 + d 1 In N dimensions, a metric that admits the maximum number N(N +1)/2 of Killing vectors is said to be maximally symmetric.A maximally symmetric space
ON PURITY RELATIVE TO AN HEREDITARY TORSION THEORY
, 1992
"... The thesis is mainly concerned with properties of the concept "apurity" introduced by J. Lambek in "Torsion Theories, Additive Semantics and Rings of Quotients", (SpringerVerlag, 1971). In particular we are interested in modul es Mfor which every exact sequence of the form O~~& ..."
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The thesis is mainly concerned with properties of the concept "apurity" introduced by J. Lambek in "Torsion Theories, Additive Semantics and Rings of Quotients", (SpringerVerlag, 1971). In particular we are interested in modul es Mfor which every exact sequence of the form O
THE MEANING OF MAXIMAL SYMMETRY IN PRESENCE OF TORSION
, 1997
"... We show that the usual physical meaning of maximal symmetry can be made to remain unaltered even if torsion is present. All that is required is that the torsion fields satisfy some mutually consistent constraints. We also give an explicit realisation of such a scenario by determining the torsion fie ..."
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Cited by 1 (1 self)
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We show that the usual physical meaning of maximal symmetry can be made to remain unaltered even if torsion is present. All that is required is that the torsion fields satisfy some mutually consistent constraints. We also give an explicit realisation of such a scenario by determining the torsion
DNA loop statistics and torsional modulus
, 2008
"... The modelling of DNA mechanics under external constraints is discussed. Two analytical models are widely known, but disagree for instance on the value of the torsional modulus. The origin of this embarassing situation is located in the concept of writhe. This letter presents a unified model for DNA ..."
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Cited by 2 (0 self)
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The modelling of DNA mechanics under external constraints is discussed. Two analytical models are widely known, but disagree for instance on the value of the torsional modulus. The origin of this embarassing situation is located in the concept of writhe. This letter presents a unified model for DNA
Euler structures, the variety of representations and the Milnor–Turaev torsion
"... In this paper we extend and Poincaré dualize the concept of Euler structures, introduced by Turaev for manifolds with vanishing Euler–Poincaré characteristic, to arbitrary manifolds. We use the Poincaré dual concept, coEuler structures, to remove all geometric ambiguities from the Ray–Singer torsio ..."
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Cited by 15 (6 self)
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In this paper we extend and Poincaré dualize the concept of Euler structures, introduced by Turaev for manifolds with vanishing Euler–Poincaré characteristic, to arbitrary manifolds. We use the Poincaré dual concept, coEuler structures, to remove all geometric ambiguities from the Ray
Results 1  10
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282