objectives: the incidence of stereotyped behaviors is one of the major symptoms of diagnosis of individuals with autism spectrum disorder that causes disruption in daily life. this study aimed at evaluating the effectiveness of ball exercises on the reduction of stereotypical behavior of children with autism spectrum disorder. methods: in this study, 16 children (boys) with autism spectrum diso...

Objectives: The incidence of stereotyped behaviors is one of the major symptoms of diagnosis of individuals with autism spectrum disorder that causes disruption in daily life. This study aimed at evaluating the effectiveness of ball exercises on the reduction of stereotypical behavior of children with autism spectrum disorder. Methods: In this study, 16 children (boys) with autism spectrum dis...

The rotor-router model is a deterministic analogue of random walk invented by Jim Propp. It can be used to define a deterministic aggregation model analogous to internal diffusion limited aggregation. We prove an isoperimetric inequality for the exit time of simple random walk from a finite region in Zd, and use this to prove that the shape of the rotor-router aggregation model in Zd, suitably ...

The rotor-router model is a deterministic analogue of random walk invented by Jim Propp. It can be used to define a deterministic aggregation model analogous to internal diffusion limited aggregation. We prove an isoperimetric inequality for the exit time of simple random walk from a finite region in Zd, and use this to prove that the shape of the rotor-router aggregation model in Zd, suitably ...

These introductory notes on Whitney towers in 4-manifolds, as developed collaboration with Jim Conant and Peter Teichner, are an expansion of three expository lectures given at the Winter Braids X conference February 2020 Pisa, Italy. Topics presented include local manipulations surfaces 4–space, fundamental definitions related to their associated trees, geometric Jacobi identities, classificat...

Richard Wright’s introductory essay to his collection of short stories Uncle Tom's Children describes hidden forms of resistance against Jim Crowism and Uncle Tomism. The essay entitled The Ethics of Living Jim Crow: An Autobiographical Sketch relates Wright’s daily confrontations with Jim Crowism with a particular emphasis on his evasive actions, and his covert activities, such as silence, pla...

This study is an attempt at a colonial and postcolonial reading of Joseph Conrad’s Lord Jim. It is specifically focused on the narrative strategies used in the novel. In other words, it investigates the connection between the narrative strategy and a possible tone of imperialism in Conrad’s novel. For the introduction, a brief review of Conrad’s manner of writing and his peculiar ambiguity is p...

In the two-dimensional rotor-router walk (defined by Jim Propp and presented beautifully in [4]), the first time a particle leaves a site x it departs east; the next time this or another particle leaves x it departs south; the next departure is west, then north, then east again, etc. More generally, in any dimension d ≥ 1, for each site x ∈ Z fix a cyclic ordering of its 2d neighbors, and requi...

This paper will consider Robert Rauschenberg’s use of performance to further explore ideas already embedded within his visual artworks. His compositional processes and operational strategies will be scrutinized to distinguish commonalities and dissimilarities in his approaches. In particular, Rauschenberg’s effort to conflate seemingly disparate genres or concepts will be examined not as a mere...