statement of problem: some vertical changes might be observed during the first stage of orthodontic treatment, aligning and leveling. purpose: the aim of this study was to evaluate dental and/or skeletal vertical changes occurring in the first stage of preadjusted orthodontic treatment. materials and methods: fourteen patients with an average age of 14.1 years were selected for this study. prea...

The large volume of images used in Distance Learning System are required to be compressed in a good ratio to release the storage loading of computer servers. A new image coding Scheme based on Principle Components Analysis (PCA) and Wavelet decomposition is proposed in this paper. Our algorithm includes 1) Principle Components Analysis (PCA)to reduce the information redundancies along temporal ...

We study relations between quaternionic Riemannian manifolds admitting different types of symmetries. We show that any hyperKähler manifold admitting hyperKähler potential and triholomorphic action of S1 can be constructed from another hyperKähler manifold (of lower dimention) with an action of S1 which fixes one complex structure and rotates the other two and vice versa. On the other hand, the...

The graph is a pair of sets , where finite set whose elements are called vertices, and the pairs members . which edge. Let be simple distance between points denoted by length shortest path Given there vertex on connected then If -partition representation with respect to -ordered pairs, for all different, partition dimension partition. minimal -number -differentiating In this study, dimensions s...