Simple forces, complex shapes

Agglomerative Forces and Cluster Shapes

We model spatial clusters of similar …rms. Our model highlights how agglomerative forces lead to localized, individual connections among …rms, while interaction costs generate a de…ned distance over which attraction forces operate. Overlapping …rm interactions yield agglomeration clusters that are much larger than the underlying agglomerative forces themselves. Empirically, we demonstrate that ...

Tifinagh Characters Recognition Using Simple Geometric Shapes

In this paper we present method of features extraction based on decomposition of the characters into several simple geometric shapes (segment, arc) by detecting the branch points and end points, as it explained follow a new methods are using to treated the obtained information in order to decide if the characters need to add more key points also in this step we extracte the type of the shapes (...

Transition from simple to complex behavior of single molecule line shapes in disordered condensed phase

Dynamic Grasp Synthesis of Simple Convex Shapes

The general grasp planning problem has been studied in the academic community for decades. Developing efficient and versatile grasping systems has great implications in automating tasks that require dexterous and compliant manipulation. Traditional approaches tend to favor optimality over efficiency, producing grasping systems that are slow. I propose a new strategy that combines successful pro...

Self-assembly of Shapes at Constant Scale Using Repulsive Forces

The algorithmic self-assembly of shapes has been considered in several models of self-assembly. For the problem of shape construction, we consider an extended version of the Two-Handed Tile Assembly Model (2HAM), which contains positive (attractive) and negative (repulsive) interactions. As a result, portions of an assembly can become unstable and detach. In this model, we utilize fuel-efficien...