DLL is used as a clock generator due to its stable operation and relatively simple design. Analog DLL has the advantages of lower phase offset and lower clock jitter than digital DLL. However, locking speed is slow in analog DLL. This paper proposes a dual edge triggered phase detector to enhance the locking speed of analog DLL and suggests a closed-form expression of locking speed which can co...

In the diverse mechanosensory systems that animals evolved, the waveform of stimuli can be encoded by phase locking in spike trains of primary afferents. Coding of the fine structure of sounds via phase locking is thought to be critical for hearing. The upper frequency limit of phase locking varies across species and is unknown in humans. We applied a method developed previously, which is based...

OBJECTIVES The purpose of this study was to assess the effectiveness of a novel radiation-independent aiming device for distal locking of intramedullary nails in a human cadaver model. METHODS A new targeting system was used in 25 intact human cadaver femora for the distal locking procedure after insertion of an intramedullary nail. The number of successful screw placements and the time neede...

We report on injection locking of optically excited mechanical oscillations of a single, trapped ion. The injection locking dynamics are studied by analyzing the oscillator spectrum with a spatially selective Fourier transform technique and the oscillator phase with stroboscopic imaging. In both cases we find excellent agreement with theory inside and outside the locking range. We attain inject...

In this paper we are using new method called “A fast –locking digital DPLL using integrator and diffentiator controlling with VHDL AMS and Matlab. This method reduces the locking Time and improves performance of DPLL. In the Previous method the fast locking DPLL operation Reduces the lock time by a factor about 4.10 Compared to its conventional DPLL counterpart. But the proposed method more eff...

Optical injection locking and optical phase-lock loops have been used for laser synchronization. The use of a combined optical injection locking and phase-lock loop system is proposed here. We have taken into account the modification of the slave laser phase response induced by the injection locking to calculated the phase-error signal spectrum and the phase-error variance for an optical inject...

In intramedullary tibial nailing, multi-planar locking makes stabilization of proximal and distal metaphyseal fractures possible. A known complication in intramedullary nailing of the tibia is iatrogenic injury to neuro-vascular structures caused by the insertion of locking screws. As shown in previous studies, the distal positioning of the nail is important, as it determines the course of the ...

While there is no major controversy in managing stable fractures of the fingers, a consensus has not yet been reached in treating unstable fractures of the phalanges and metacarpals of the hands.1-3 Both static4 and dynamic splints5-7 have been used for treating selected cases of unstable phalangeal and metacarpal fractures, for which good outcomes are noted. However, for fractures with rotatio...

Title of Document: HUMERAL FRACTURE FIXATION TECHNIQUES: A FEA COMPARISON OF LOCKING AND COMPRESSION TECHNIQUES WITH CADAVERIC PULLOUT COMPARISON OF CORTICAL COMPRESSION AND INTERNAL LOCKING SCREWS. Aaron Johnson, MS Mechanical Engineering, 2007 Directed By: Professor, Donald Barker, Mechanical Engineering Locking and non-locking humeral repair techniques provide different mechanical constructs...

In order to provide scientific and empirical evidence for the clinical application of the polyaxial self-locking anatomical plate, 80 human tibias from healthy adults were scanned by spiral CT and their three-dimensional images were reconstructed using the surface shaded display (SSD) method. Firstly, based on the geometric data of distal tibia, a polyaxial self-locking anatomical plate for dis...