Results 301 to 310 of about 3,936,282 (345)
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Stability assessment of distal radius fractures
Injury, 1989A total of 112 consecutive cases of fractures of the distal radius managed conservatively were graded according to radiological criteria using the first radiograph. These criteria, as well as age over 60 years, were considered as gravity factors. A strong correlation was found between these criteria and the risk of secondary displacement, despite a ...
Lafontaine, Murielle +2 more
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Stability radius of linear delay systems [PDF]
Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251), 1999 We study robust stability of linear time delay systems under structured parameter uncertainty. A formula for complex stability radius is derived. We then consider linear positive delay systems and prove that for this class of systems the complex stability radius is equal to the real stability radius which can be computed via a simple formula.
Pham Huu Anh Ngoc, Nguyen Khoa Son
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Stability Radius of S-Quasimonotone Maps
Numerical Functional Analysis and OptimizationA map F(·) defined on a nonempty and convex D⊂Rn , which remains pseudomonotone when disturbed by vectors in Rn with sufficiently small norm, is s-quasimonotone (P. T. An, Optimization, Vol. 55 (2006), pp. 289–299). In this paper, the stability radius of
V. T. T. Binh, P. T. An
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On the computation of the real Hurwitz-stability radius
IEEE Transactions on Automatic Control, 1995Recently Qiu et al. (1995) obtained a computationally attractive formula for the evaluation of the real stability radius. This formula involves a global maximization over frequency. Here, for the Hurwitz stability case, we show that the frequency range can be limited to a certain finite interval. Numerical experimentation suggests that this interval is
Qiu, Li, Tits, Andre L., Yang, Yaguang
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On the calculation of the stability radius of an optimal or an approximate schedule [PDF]
Annals of Operations Research, 1997 The main objective of this paper is to stimulate interest in stability analysis for scheduling problems. In spite of impressive theoretical results in sequencing and scheduling, up to now the implementation of scheduling algorithms with a rather deep mathematical back-ground in production planning, scheduling and control, and in other real-life ...
Sotskov, Y.N. +2 more
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The influence of a single-radius-design on the knee stability
Technology and Health Care, 2012Prostheses with single radius (SR) design were supposed to be as good as the physiological kinematic and stability of the knee. This in-vitro biomechanical study compared SR to a multiple radius (MR) design on the one hand and seven left human knee specimens were used. The SR and MR knee prosthesis where implanted with a navigation system.
Christoph Becher +6 more
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Biomechanical Evaluation of Distal Radius Fracture Stability
Journal of Orthopaedic Trauma, 1998(a) To determine the radiographic correlation between an artificially created dorsal comminution (via a wedge osteotomy) and dorsal tilt (clinical instability) and (b) to determine the efficacy of cast immobilization in maintaining reduction of the simulated fracture pattern as a predictor of successful treatment in the clinical setting.Biomechanical ...
Walter A. Eglseder +2 more
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A study of the stability radius for descriptor systems
Proceedings of 35th IEEE Conference on Decision and Control, 2002This paper studies the structural stability of linear time invariant descriptor systems of the form: Ex/spl dot/=Ax where E and A are subject to real or complex perturbations, and various definitions related to structural regularity, structurally impulsive and exponential stability are presented.
Y.Z. Hu, E.J. Davison
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On the relationship between the spectral radius and stability radius for discrete systems
IEEE Transactions on Automatic Control, 1990The relationship between the spectral radius and the stability radius is established via elementary calculation. The result gives a discrete counterpart of the existing result for continuous systems and provides an upper bound for the stability radius. The main result of the calculation is summarized in the form of a theorem. >
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Enlarging the radius of stability and stability regions in Data Envelopment Analysis
European Journal of Operational Research, 2019This paper extends fundamental results on metric sensitivity in Data Envelopment Analysis. Specifically, it shows how to obtain a larger radius of stability for a decision- making unit (DMU) by exploiting knowledge about its variability, and how to enlarge a DMU's region of stability to a nonsymmetric hyperbox.
Luka Neralić, Richard E. Wendell
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