objective:  to determine the epidemiological and clinical characteristics of hand and finger amputations in patients referring to a single center in northern iran. methods: this was a cross-sectional study conducted on 200 traumatic hand amputees hospitalized in shohada hospital in tabriz, northwestern iran during a 1-year period in 2014. data were collected through prospective interviews for v...

The correspondences establishment for a set of models is a versatile algorithm in computer graphics and geometry processing, which in general counts on a lot of specification by users to build a common dissection with a set of feature points between the input models. We propose a novel method to compute the consistent parametrizations for multiple models with a little user-input. Our consistent...

  Background: Evaluation of intra-city roads in terms of environmental factors of motor vehicle injuries can help us to better identify these factors and the share of each of the factors in injuries. Therefore, this study was conducted to determine the high injury areas and the risk factors of motor vehicle crashes resulting in injury and death in Tehran, the capital city of Iran, from November...

Periodically forced planar oscillators are typically studied by varying the two parameters of forcing amplitude and forcing frequency. Such differential equations can be reduced via stroboscopic sampling to a two-parameter family of diffeomorphisms of the plane. A bifurcation analysis of this family almost always includes a study of the birth and death of periodic orbits. For low forcing amplit...

Potentials generally used in molecular dynamics (MD) simulation of SiO2 properties customarily are calibrated to a combination of computed molecular electronic structure data and experimental crystalline data. The present study tests parametrization to data from high-level, first-principles electronic structure calculations alone. The issue is crucial to the success of multi-scale simulations. ...

The maximum-based description is a linear and simple parametrization method ofF0 contours. An F0 maximum is characterized by four parameters: its position, its height, its left and its right slope. An automatic parametrization algorithm was developed. A perceptual evaluation was carried out for German and for English. The perceptual equality between original and parametrized contours was confir...

Some Rational elliptic curves whose modular parametrization is given by an Eichler integral were considered. The points, other than cusps, that map to zero under modular parametrization were studied computationally. Surprisingly, these zeros appear to be CM-points. This paper is organized under the following section headings:

Real cubic algebraic surfaces may be described by either implicit or parametric equations. Each of these representations has strengths and weaknesses and have been used extensively in computer graphics. Applications involving both representations include the efficient computation of surface intersections, and triangulation of curved surfaces. One particularly useful representation is the ration...

The epipolar parametrization arises naturally in the reconstruction of surfaces from prooles with known camera motion. This is a special case of a local paramet-ric representation which is a mesh. Local parametric representations can be combined into a global one by computing the transformation in parameter space on the overlap of the patches. This paper also discusses the applicability of this...

The effectiveness of norm-based control methodologies heavily relies on the quality of the model that describes the dynamic behavior of the plant. In practical applications, the requirement to accurately describe the system at hand often results in high-order plant-models. On the other hand, low-order models are desired to end-up with low-order controllers that reduce implementational costs. Th...