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Direct linkNikolakopoulos, Stavros – Research Synthesis Methods, 2020
In narrative synthesis of evidence, it can be the case that the only quantitative measures available concerning the efficacy of an intervention is the direction of the effect, that is, whether it is positive or negative. In such situations, the sign test has been proposed in the literature and in recent Cochrane guidelines as a way to test whether…
Descriptors: Synthesis, Evidence, Statistical Analysis, Nonparametric Statistics
Anderson, Bruce D.; Gordon, Christopher M. – Journal of Chemical Education, 2008
In this experiment, linear polyynes are synthesized and then the predictions of a one-dimensional, particle in a box are used to calculate the quantum mechanical box length for the polyynes. A solution of graphite in ethanol is irradiated with a Nd:YAG laser (532 nm) and the resulting solution is filtered and analyzed. Data from gas…
Descriptors: Quantum Mechanics, Physics, Chemistry, Lasers
