Peripheral intravenous catheters (PIVs) are mainstays of modern medical intervention, placed in >25 million US patients annually1 and in at least 44% of pediatric inpatients.2 Although PIVs are often essential for delivering medications, hydration, and nutrition to ill children, they are not without consequence or cost. In this issue of Hospital Pediatrics, Goff et al detail specifi c PIV inser...

We present the Protected-IV construction (PIV) a simple, modular method for building variable-input-length tweakable ciphers. At our level of abstraction, many interesting design opportunities surface. For example, an obvious pathway to building beyond birthday-bound secure tweakable ciphers with performance competitive with existing birthday-bound-limited constructions. As part of our design s...

This article provides data on the static behavior of reinforced concrete at room and low temperature including, strength, ductility, and crack widths of the reinforced concrete. The experimental data on the application of digital image correlation (DIC) or particle image velocimetry (PIV) in measuring crack widths and the accuracy and precision of DIC/PIV method with temperature variations when...

A systematic investigation of the alcoholysis of copper(II) pivalate (piv(-)) solutions has led to a series of Cu(2), Cu(6), and Cu(16) products, depending on the alcohol used as solvent. When Pr(n)OH or Bu(n)OH was employed, the products were the clusters [Cu(16)O(4)(OH)(4)(OR)(8)(piv)(12)(ROH)] (R = Pr(n), Bu(n)) that are almost isostructural. The Cu(16) clusters are antiferromagnetically-cou...

The Aerospace Research Laboratory at the University of Virginia currently uses Particle Image Velocimetry (PIV) to measure the velocity fields of flow through a Mach 2 Scramjet Test Section. PIV is the method of tracking seed particles as they are carried through the flow, and using their velocities to create a velocity field. This method is limited by seed particles coating the windows, known ...

This paper is concerned with experimental results of sand avalanches flowing down inclined plexiglass chutes with lateral confinement. Specifically we introduce the particle image velocimetry (PIV) technique for granular avalanches. We discuss the differences and problems in comparison with “usual” PIV. After this, we present surface and side velocity measurements that are obtained at different...

The velocity fields of acoustic standing wave in a rectangular channel are investigated. A new approach is used to measure the velocity fields using PIV. In this approach, the velocity fields are sampled at different phases in a given experimental run without synchronizing the PIV system with the excitation signal. The results show that the RMS velocities measured from this approach are in exce...

Recently, we have benchmarked and tuned the MILC code on a number of architectures including Intel Itanium and Pentium IV (PIV), dual-CPU Athlon, and the latest Compaq Alpha nodes. Results will be presented for many of these, and we shall discuss some simple code changes that can result in a very dramatic speedup of the KS conjugate gradient on processors with more advanced memory systems such ...