Science: Reports
http://hdl.handle.net/10092/696
Sun, 14 Jul 2019 05:38:14 GMT2019-07-14T05:38:14ZA Longitudinal Analysis of Children’s Mathematical Word Problem Solving by Using Tablet PC-Based Support for the Metacognitive Skill Known as Self-Explanation
http://hdl.handle.net/10092/16568
A Longitudinal Analysis of Children’s Mathematical Word Problem Solving by Using Tablet PC-Based Support for the Metacognitive Skill Known as Self-Explanation
Neumann E; Tajika H; Nakatsu N; Kato H; Fugitani T; Hotta C; Nazaki H
The purpose of the study was to examine the efficacy of self-explanation for helping elementary school children solve mathematical word problems through tablet PC-based support over one year and a half. Ninety-two fifth grade students received training and testing lasting into the sixth grade. The students solved worked-out examples for twenty minutes once a week in five two-week training sessions. They completed a word problem test at the end of each session. The results showed that all of the students gradually solved more word problems correctly after training than before. We classified students in the training condition into three groups according to the patterns of their test scores from an initial pretest and a first mathematical word problem test. Students in the upper group, who had consistently higher scores, appropriately generated a correct drawing and self-explanation of their solution processes and used inferences well. Some of the students in the middle group, who were gradually increasing their scores, also generated a correct drawing and self-explanation and used inferences well. Most students in the lower group, who had consistently low scores, did not generate a correct drawing and self-explanation and did not use inferences at first, but correctly drew inferences after receiving feedback. Self-explanation as a metacognitive skill is discussed.
Mon, 01 Jan 2018 00:00:00 GMThttp://hdl.handle.net/10092/165682018-01-01T00:00:00ZRandom dynamical systems and transfer operator cycles
http://hdl.handle.net/10092/16538
Random dynamical systems and transfer operator cycles
Murray R
Random dynamical systems are generated by recursively applied sequences of maps,
where the choice of map at each timestep is determined by a stochastic process. Such
systems are usually formulated as a skew-product, in which the \base" dynamics
is autonomous and the \ bre-to- bre" mappings are determined by the base. An
observer watching only the bres sees non-autonomous dynamics, or \random" orbits.
Typical questions of interest relate to the long-term distribution of orbits, mass-
transport, rates of mixing and so on, and there are numerous real-world applications.
This talk will introduce the important ideas for studying random dynamics from an
ergodic theory viewpoint. Questions of \stochastic stability" can be formulated (and
answered) in this way, and much of the theory works as one might expect when the
base process is IID. In such cases, insight can even be gained via a transfer operator
obtained by averaging over all bres. When the base process is not IID (for example,
an ergodic dynamical system), averaging may yield irrelevant objects, and one must
study cocycles of transfer operators and the important dynamical structures on bres
become random variables. This picture will be outlined, and some positive results on
accessing the distribution of orbits of certain random interval maps will be given.
Mon, 01 Jan 2018 00:00:00 GMThttp://hdl.handle.net/10092/165382018-01-01T00:00:00ZDysphagia Rehabilitation: Similarities and Differences in Three Areas of the World
http://hdl.handle.net/10092/16420
Dysphagia Rehabilitation: Similarities and Differences in Three Areas of the World
González-Fernández M; Huckabee ML; Doeltgen SH; Inamoto Y; Kagaya H; Saitoh E
Tue, 01 Jan 2013 00:00:00 GMThttp://hdl.handle.net/10092/164202013-01-01T00:00:00ZThe Importance of Speech, Language and Communication to the United Nations Sustainable Development Goals: A Summary of Evidence.
http://hdl.handle.net/10092/16362
The Importance of Speech, Language and Communication to the United Nations Sustainable Development Goals: A Summary of Evidence.
Hussain N; Jagoe C; O'Shea A; Williams C; Sutherland D; Wright M
Mon, 01 Jan 2018 00:00:00 GMThttp://hdl.handle.net/10092/163622018-01-01T00:00:00Z