Micro-buffered networks are high speed optical packet switched networks, and consist of either nodes with no buffering or nodes with limited buffering. We focus on the case of bufferless nodes, where there is no specific collision resolution mechanisms inside the core. Packet losses inside the core may be frequent, and are dealt with using end-to-end or edgeto-edge coding techniques. In this st...

We examine the Nagel-Schreckenberg traffic model for a variety of maximum speeds. We show that the low-density limit can be described as a dilute gas of vehicles with a repulsive core. At the transition to jamming, we observe finite-size effects in a variety of quantities describing the flow and the density correlations, but only if the maximum speed V_{max} is larger than a certain value. A fi...

Persons with type II diabetes mellitus (DM), even without cardiovascular complications have a decreased maximal oxygen consumption (VO2 max) and submaximal oxygen consumption (VO2) during graded exercise compared with healthy controls. We evaluated the hypothesis that change in the rate of VO2 in response to the onset of constant-load exercise (measured by VO2-uptake kinetics) was slowed in per...

This paper proposes the integration of the resolution rule for Max-SAT with unsatisfiability-based Max-SAT solvers. First, we show that the resolution rule for Max-SAT can be safely applied as dictated by the resolution proof associated with an unsatisfiable core when such proof is read-once, that is, each clause is used at most once in the resolution process. Second, we study how this property...

Light isomerizes the chromophore of rhodopsin, 11-cis retinal (formerly retinene), to the all-trans configuration. This introduces a succession of unstable intermediates-pre-lumirhodopsin, lumirhodopsin, metarhodopsin -in which all-trans retinal is still attached to the chromophoric site on opsin. Finally, retinal is hydrolyzed from opsin. The present experiments show that metarhodopsin exists ...

In this paper, we propose a new hardware unit that performs a 16 × 1 SAD operation. The hardware unit is intended to augment a general-purpose core. Further, we show that the 16× 1 SAD implementation used can be easily extended to perform the 16 × 16 SAD operation, which is commonly used in many multimedia standards, including MPEG-1 and MPEG-2. We have chosen to implement the 16 × 1 SAD operat...

In this paper, we propose a new unit intended to augment a general-purpose core that is able to perform a SAD operation. We show that the SAD implementation can easily be extended to perform the complete SAD operation. The SAD operation is commonly used in many multimedia standards, including MPEG-1 and MPEG-2. We have chosen to implement the SAD operation in field-programmable gate arrays (FPG...

BACKGROUND The Internet has become an important venue for seeking sexual partners and may facilitate transmission of sexually transmitted infections. METHODS We examined a 64-day data log of flirt messages expressing sexual interest among MSM within the Qruiser.com community. We used logistic regression to analyze characteristics of MSM sending and receiving flirt messages and negative binomi...

Thermoregulatory cutaneous vasodilation is diminished in the elderly. The goal of this study was to test the hypothesis that a reduction in nitric oxide (NO)-dependent mechanisms contributes to the attenuated reflex cutaneous vasodilation in older subjects. Seven young (23 +/- 2 yr) and seven older (71 +/- 6 yr) men were instrumented with two microdialysis fibers in the forearm skin. One site s...

An extraction-spectrophotometric method for the determination of traces of copper (II) is described. The method is based on the quantitative extraction of copper as tetrabutylammonium tetrathiocyanato copper (II) into methyl isobutyl ketone, followed by spectrophotometric determination, using eriochrome black T as a metallochromic indicator. The red-violet mixed complex of copper absorbs at...