abstract traumatic rupture of the distal biceps tendon is rare. conservative treatment can result in reduced flexion and supination power with reduced function. this case report emphasizes the need for prompt surgical treatment and describes the possible complications of delayed surgical intervention.

purpose: to report the clinical, paraclinical and histopathologic features of eyelid mass lesions in a patient with tuberous sclerosis. case report: a 14 year old boy with a slowly progressive right upper lid mass and history of seizures, mental retardation and multiple skin lesions on the face and body was referred to labbafinejad medical center. cortical tubers and subepandimal nodules were r...

We discuss experimental demonstrations of chaotic communication in several optical systems. In each, an erbium-doped fiber ring laser (EDFRL) produces chaotic fluctuations of light intensity onto which is modulated a message consisting of a sequence of pseudorandom digital bits. This combination of chaos and message propagates at a wavelength of ∼ 1.5 microns through standard single-mode optica...

1Department of Civil Engineering; Aerospace and Mechanical Engineering; Mathematics; and Information and Operations Management; University of Southern California; Los Angeles; CA 90089-1453; U.S.A. 2Department of Aerospace and Mechanical Engineering; University of Southern California; Los Angeles; CA 90089-1453; U.S.A. 3Structural Analysis and Research Corporation; 5000 McKnight Road; Pittsburg...

This work provides one of the first attempts to derive computationally tractable criteria for analyzing the stability of Linear Parameter Varying (LPV) time-delayed systems. We present both delay-independent and delay-dependent stability conditions, which are derived using appropriately selected Lyapunov-Krasovskii functionals. According to the system parameter dependence, these functionals can...

Some issues in the stability of differential delay systems in the linear and the nonlinear case are investigated. In particular, sufficient robustness conditions are derived under which a system remains stable, independent of the length of the delay(s). Applications in the design of delayed feedback systems are given. Two approaches are presented, one based on Lyapunov theory, the other on a tr...

Popp and Yan [F. A. Popp, Y. Yan, Phys. Lett. A 293 (2002) 93] proposed a model for delayed luminescence based on a single time-dependent coherent state. We show that the general solution of their model corresponds to a luminescence that is a linear function of time. Therefore, their model is not compatible with experimental delayed luminescence. Moreover, the functions that they use to describ...

This paper introduces an analytical approach for the evaluation of multi-user engineering systems presenting a failure delayed behaviour pattern, that is, systems whose performance decays progressively after the failures, due to internal fault tolerance mechanisms or to the complacency of the users regarding the temporarily unavailability of the services. The approach is based on the determinat...

The control of limit cycle oscillations is discussed for nonlinear delayed feedback systems. Through a center manifold reduction the effects of the control parameters on the periodic behavior are determined. The results are applied to the perturbed harmonic oscillator under the action of delayed feedback of position, which is a prototype system commonly arising in diverse biological and industr...