In this study, we have designed and implemented a system that supports learners to use backward chaining to solve proof problems about the congruence of two triangles. In addition, we have carried out an evaluation experiment in a public junior high school to measure the learning effect of the system. As a result of hypothesis tests, for students with good pretest scores, the effect of the syst...

in this paper, a new method is introduced for improving the efficiency of the residue number system, which uses both binary and residue representations in order to represent a number. a residue number system uses the remainder of the division in several different modules. conversion of a number to smaller ones and carrying out parallel calculations on these numbers greatly increase the speed of...

background motor intervention plays an important role in reducing the disabilities of down syndrome (ds). a lack of balance and postural control has created motor problems in ds patients. therefore, the aim of this study was to examine the effect of backward walking on postural stability of ds patients. materials and methods sixteen ds children with 8-10 age range were selected by convenience s...

We study a class of deceptively similar games, which however have different player sets and predictions that vary with their cardinality. The economic, biological, political, and psychological applications are many. The game-theoretic principles involved are compelling as predictions rely on weaker and less controversial epistemic foundations than needed to justify backward inductions more gene...

‎In this paper a nonlinear backward parabolic problem in one‎ ‎dimensional space is considered‎. ‎Using a suitable iterative‎ ‎algorithm‎, ‎the problem is converted to a linear backward parabolic‎ ‎problem‎. ‎For the corresponding problem‎, ‎the backward finite‎ ‎differences method with suitable grid size is applied‎. ‎It is shown‎ ‎that if the coefficients satisfy some special conditions‎, ‎th...