منابع مشابه
Hooks and Shifts 1 Running head: HOOKS AND SHIFTS Hooks and Shifts in Instrumented Mathematics Learning
This paper presents and analyzes vignettes selected from empirical data gathered in a designbased research study investigating the microgenesis of proportional reasoning through technology-mediated embodied interaction. 22 Grades 4-6 students participated in individual or paired semi-structured clinical interviews in which they engaged in problem-solving activities involving remote manipulation...
متن کاملRequirements for a Hooks Tool
Object-oriented frameworks can be complex and di cult to use. Tool support can greatly aid developers in using these frameworks. However, existing tools, such as graphical user interface builders, only support one framework and are not easily customized. Hooks, which describe the intended use of a framework, can form the basis of a general, exible tool that supports many di erent frameworks. Th...
متن کاملExcluding hooks and their complements
The celebrated Erdős-Hajnal conjecture states that for every n-vertex undirected graph H there exists ε(H) > 0 such that every graph G that does not contain H as an induced subgraph contains a clique or an independent set of size at least n. A weaker version of the conjecture states that the polynomial-size clique/independent set phenomenon occurs if one excludes both H and its complement H. We...
متن کاملOn hooks of Young diagrams
The well-known fact that there is always one more addable than removable box for a Young diagram is generalized to arbitrary hooks. As an application, this implies immediately a simple proof of a conjecture of Regev and Vershik 3] for which inductive proofs have recently been given by Regev and Zeilberger 4] and Janson 1].
متن کاملReusing Application Frameworks Through Hooks
Object-oriented frameworks can be complex. Often, considerable time is needed to understand the framework, including not only what the framework does, but also how to use it. Techniques for documenting the design of a framework already exist, but less work has been done on documenting how to use the framework. We have developed the notion of hooks as a means of representing knowledge about the ...
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ژورنال
عنوان ژورنال: APOS Trends in Orthodontics
سال: 2014
ISSN: 2321-1407
DOI: 10.4103/2321-1407.127747