An Analysis Of Teacher Effectiveness Related To Technology Implementation In Texas Secondary Schools

In the age of accountability, schools are struggling to reach every student to bring them up to the high academic standards mandated by the federal and state governments.  Teachers must use research-based strategies to help decrease the learning gap for all students (Kimmelman, 2006).  While the use of technology to engage students is a popular tool, how teachers use the technology available to them may determine the effectiveness of the lesson for the students.  State assessment scores measure student success and the effectiveness of the instruction they are receiving. Technology may be a means to increase that effectiveness to take more students to a deeper level of understanding. An analysis of variance was used to evaluate the data from surveys on the ways technology was used in the classroom and the level of implementation of use in the classroom. There was a statistical difference on test scores for teachers who used technology in the classroom and those who did not.  The study showed the teachers who implemented technology in their classrooms had lower scores than teacher who did not.  The ability to implement technology in student lessons and the use of content standards with technology may change student engagement in the classroom (Harris & Hofer, 2011).  This information could be significant in helping administrators determine successful instructional strategies for their schools

Decoherence time in self-induced decoherence

A general method for obtaining the decoherence time in self-induced decoherence is presented. In particular, it is shown that such a time can be computed from the poles of the resolvent or of the initial conditions in the complex extension of the Hamiltonian's spectrum. Several decoherence times are estimated: $10^{-13}-$ $10^{-15}s$ for microscopic systems, and $10^{-37}-10^{-39}s$ for macroscopic bodies. For the particular case of a thermal bath, our results agree with those obtained by the einselection (environment-induced decoherence) approach.Comment: 11 page

Anatomy and Neurophysiology of the Taste System in Aged Animals a

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72005/1/j.1749-6632.1989.tb20989.x.pd

Multi-element cylindrical electrostatic lens systems for focusing and controlling charged particles

This paper describes theoretical modelling of electrostatic lenses based on 3, 4 and 5 closely spaced cylindrical electrodes, respectively. In each case, modelling is carried out numerically using commercial packages SIMION and LENSYS, and a variety of performance parameters are obtained. These include the magnification, the 3rd order spherical and chromatic aberration coefficients. Special cases such as zoom lens (i.e., lenses whose magnification may be changed without losing focus) are considered. Results are obtained as a function of the ratios of the electrode lengths and gaps, and as a function of ratios of the controlling voltages. As a result, it is shown that how a multi-element lens system can be operated with the whole focal properties in a useful mode for using in experimental studies.Comment: 20 pages, 15 figure