The availability of multiple wireless access technologies, together with the increasing use of realtime multimedia applications, are creating strong demand for handover performance, measured in terms of latency and losses. In addition, handover solutions must allow service providers, application providers, and other entities to implement handover policies based on a variety of operational and b...

MARTA FILICKOVA, PhD, Researcher at the Department of Pre-School and Elementary Pedagogy and Psychology, Faculty of Education, University of Presov in Presov, Slovakia; e-mail: marta. [email protected] doc. IVETA KOVALCIKOVA, PhD, Associate Professor at Department of Pre-School and Elementary Pedagogy and Psychology, Faculty of Education, University of Presov in Presov, Slovakia. IVAN ROPOVIK,...

The redox properties of monolayer-protected gold nanoclusters (MPCs) are considered from both the theoretical and experimental viewpoints. The "absolute standard redox potential" ([E0((z/z)-1))]abs) of MPCs is first derived from electrostatic considerations. A linear dependence of the absolute standard redox potential on the valence state of MPCs is theoretically predicted and verified experime...

Test-retest reliability was assessed for parameters describing motor unit action potential shapes, obtained from multi-channel surface EMG signals.

Unbiased open-ended methods for finding transition states are powerful tools to understand diffusion and relaxation mechanisms associated with defect diffusion, growth processes, and catalysis. They have been little used, however, in conjunction with ab initio packages as these algorithms demanded large computational effort to generate even a single event. Here, we revisit the activation-relaxa...

In a chemical thermodynamics course many students have difficulty understanding the following equation o DG = RT ln K (1) p Even gifted students find it difficult to understand the delta function and the dimensions of K . p The ambiguity of the delta symbol in chemical thermodynamics is the major contributing factor to this lack of understanding. The IUPAC Commission on Physicochemical Symbols ...

The pulp and paper industry accounts for over 12% of total manufacturing energy use in the U.S. (U.S. EIA 1997a), contributing 9% to total manufacturing carbon dioxide emissions. In the last twenty-five years primary energy intensity in the pulp and paper industry has declined by an average of 1% per year. However, opportunities still exist to reduce energy use and greenhouse gas emissions in t...

Based on a single particle model which describes the time evolution of the wave function during tunneling across a one dimensional potential barrier we study the proton decay of 208 Pb from excited states with non-vanishing angular momentum ℓ. Several quantities of interest in this process like the decay rate λ, the period of oscillation T osc , the transient time t tr , the tunneling time t tu...

Trapping of electrons in stacking fault SF interface states may lower the energy of a SF more than it costs to form the SF. This “electronic stress” driving force for SF expansion is evaluated for single and double stacking faults in 4H-SiC in terms of a two-dimensional free-electron density of states model based on first-principles calculations. In contrast with previous work, which claimed th...

Objective. Acupuncture points are reportedly distinguishable by their electrical properties. However, confounders arising from skin-to-electrode contact used in traditional electrodermal methods have contributed to controversies over this claim. The Scanning Kelvin Probe is a state-of-the-art device that measures electrical potential without actually touching the skin and is thus capable of ove...