1. A simple network consisting of two nodes, X and Z is shown in Fig 1. The nodes are separated by a distance of L = 800 m, and each node has a single frame of F = 1500 bits (including all headers and preambles) to send to each other. Both nodes attempt to transmit at time t = 0. In case that a node detects a collision, the node executes the exponential back-off algorithm. In the exponential ba...

We study the off-equilibrium dynamics of the Edwards–Anderson spin glass in four dimensions under the influence of a non-Hamiltonian perturbation (i.e. with asymmetric couplings). We find that for small asymmetry the model behaves like the Hamiltonian model, while for large asymmetry the behaviour of the model can be well described by an interrupted ageing scenario. The autocorrelation function...

The present investigation aims at numerically simulating the temporal energy transport for incompressible ~ows through a packed bed[ The governing equations are formulated according to the volume averaging method[ The generalized momentum equation which accounts for the inertial and viscous forces was used to carry out this research\ whereas the two!energy equation model was used for simulating...

It is still an open question in parallel discrete event simulation what conditions influence the performance of parallel simulation paradigms. We have developed a simulation environment based on asynchronous cellular automata that facilitates basic research into the concepts of discrete event simulation and parallel discrete event simulation, such as the Time Warp paradigm. We address the trans...

Gary Mulcahy is Chief Technology Officer and Co-CEO of TDI. He received his BE-EE from New York University followed by graduate study at the Polytechnic Institute of New York. Mr. Mulcahy is a recognized authority in power conversion technology and the design, development and production of power systems for maximum performance and reliability with minimal life cycle cost of ownership. JOHN SANT...

We have previously shown that a 2-chloro-1,4-naphthoquinone derivative (TW-92) induces cell death in leukemia cells. TW-92 exhibited relatively high selectivity towards primary Acute Myeloid Leukemia (AML) cells, as compared to normal mononuclear cells. In view of the selectivity of this family of naphthoquinones, novel chloroaminophenylnaphthoquinone isomers with different methyl substitutions...

BACKGROUND Inspiratory muscle weakness is a recognised cause of unexplained dyspnoea. It may be suggested by the finding of a low static inspiratory mouth pressure (MIP), but MIP is a difficult test to perform, with a wide normal range; a low MIP may also occur if the patient has not properly performed the manoeuvre. Further investigation conventionally requires balloon catheters to obtain oeso...

PURPOSE To develop and evaluate an integrated imaging protocol for bone water and phosphorus quantification in vivo by solid-state 1H and 31P MRI. MATERIALS AND METHODS All studies were HIPAA-compliant and were performed with institutional review board approval and written informed consent. Proton (1H) ultra-short echo-time (UTE) and phosphorus (31P) zero echo-time (ZTE) sequences were design...

The inÛuence of interstitial hydro gen concentration and structural defects caused by quenching of pallad iu m, b egun at di ̃erent temp eratures up to the temp erature of liqui d nitrogen or by stretching by external forces, on spectra of lif etimes of positrons in this metal w as investigated . I t w as found that the spectra of p ositron lif etimes in the examined systems are b est describ ed...