5,664 research outputs found
Self-written waveguides in photopolymerizable resins
We study the optically-induced growth and interaction of self-written
waveguides in a photopolymerizable resin. We investigate experimentally how the
interaction depends on the mutual coherence and relative power of the input
beams, and suggest an improved analytical model that describes the growth of
single self-written waveguides and the main features of their interaction in
photosensitive materials.Comment: 3 pages, 3 figure
Game Based Learning for Safety and Security Education
Safety and security education are important part of technology related education, because of recent number of increase in safety and security related incidents. Game based learning is an emerging and rapidly advancing forms of computer-assisted instruction. Game based learning for safety and security education enables students to learn concepts and skills without the risk of physical injury and security breach. In this paper, a pedestal grinder safety game and physical security game have been developed using industrial standard modeling and game development software. The average score of the knowledge test of grinder safety game was 82%, which is higher than traditional lecture only instruction method. In addition, the survey of physical security game shows 84% average satisfaction ratio from high school students who played the game during the summer camp. The results of these studies indicated that game based learning method can enhance students' learning without potential harm to the students
Renormalization of Currents for Massive Fermions
The renormalization of vector and axial-vector currents for massive fermions
(in the ``Fermilab formalism'') is discussed. We give results for
non-degenerate masses, which are needed for semi-leptonic form factors.Comment: LATTICE98(heavyqk), LaTeX, 3 pages, 3 postscript figures, uses
espcrc2.sty; version2 adds hep-lat links for refs 1 and
Potentiometric Sensors Based on the Inductive Effect on the pK_a of Poly(aniline): A Nonenzymatic Glucose Sensor
The use of conjugated polymers for sensor applications continues to be the subject of intense research. In addition to their use as electronic conductors, they have been exploited as active sensing elements by coupling ligands to the backbone. In this approach, binding of an analyte results in physical distortions or changes in electron density, thereby altering conductivity. Poly(aniline), in particular, has received a great deal of attention due to its proton coupled redox chemistry and its resulting pH-dependent properties. For example, poly(aniline) has been used as a pH electrode and has been coupled to reactions that generate or consume protons to create sensors. Herein, we report a new strategy that exploits the inductive effect of reactive substituents on the pK_a of poly(aniline) to produce active sensing elements
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