Consider a system with n components (different types of molecules) with r phases in equilibrium. The state of each phase is defined by P, T and then (n− 1) concentration variables in each phase. The phase equilibrium at given P, T is defined by the equality of n chemical potentials between the r phases. Thus there are n(r − 1) constraints on (n− 1)r + 2 variables. This gives the Gibbs phase rul...

High Speed Vertical Cavity Surface Emitting Lasers with Injection Locking

Cache locking have shown during the last years their usefulness easing the schedulability analysis of multitasking, preemptive, realtime systems. Cache locking provides a high degree of predictability while system performance is maintained at a similar level to that provided by regular, highly unpredictable, non-locked cache. Cache locking may also be useful to reduce hardware costs by means of...

Locked fixed-angle plating in the hand and wrist helps to optimize outcomes following surgical fixation of select acute fractures and complex reconstructions. Select indications include unstable distal ulna head/neck fractures, periarticular metacarpal and phalangeal fractures, comminuted/multifragmentary diaphyseal fractures with bone loss (ie, combined injuries of the hand), osteopenic/pathol...

The steady-state and transient dynamics of phase locking in a two-element Nd:YAG laser array have been studied. By creating two evanescent-coupled lasers in a Nd:YAG étalon using diode end pumping, the coupling strength between the laser elements in the array can be continuously varied by adjusting the positions of the pumping beams. This allows the observation of the phase-locking process over...

OBJECTIVE To evaluate fixation properties of a new intervertebral anchored fusion device and compare these with ventral locking plate fixation. STUDY DESIGN In vitro biomechanical evaluation. ANIMALS Cadaveric canine C4-C7 cervical spines (n = 9). METHODS Cervical spines were nondestructively loaded with pure moments in a nonconstraining testing apparatus to induce flexion/extension while...

We report on initial experiments in tree locking schemes for compiled database applications. Such applications have a repository style of architecture in which a collection of software modules or subsystems operate on a common database in terms of a predefined set of transaction types, and are very often at the core of embedded systems. Since the tree locking protocol is deadlock free, it becom...

The only reason to parallelize a program is to gain performance. However, the synchronization primitives used by parallel programs can consume execessive memory bandwidths, can be subject to memory laten-cies, consume excessive memory, and result in unfair access or even starvation. These problems can overwhelm the performance beneets of parallel execution. Therefore, it is necessary to underst...