a 20-year-old man presented with the history of pain and swelling in the anterior maxillary segment. the periapical radiography was indicative of a dental anomaly in right maxillary lateral incisor. due to the insufficient information from conventional radiography, cone-beam computed tomography (cbct) was ordered. cbct showed apical root resorption, large apical lucency and two separate canals ...

We review and evaluate four mechanisms for forming brown dwarves: (i) dynamical ejection of a stellar embryo from its placental prestellar core; (ii) opacity-limited fragmentation of a shock-compressed layer; (iii) gravitational instabilities in discs, triggered by impulsive interactions with other discs or naked stars; and (iv) photo-erosion of pre-existing cores. All these mechanisms can prod...

In recent years light-cone quantization of quantum eld theory has emerged as a promising method for solving problems in the strong coupling regime. The approach has a number of unique features that make it particularly appealing, most notably, the ground state of the free theory is also a ground state of the full theory. We discuss the light-cone quantization of gauge theories from two perspect...

The paper proposes a simple method to determine the 3-D location and shape parameters of a right circular cone using structured lights. A vital concept in the proposed method is to convert the complex curved stripe pattern into an equivalent, but simpler, linear stripe pattern. The conic surface patch lying between two visible silhouette edges is replaced by the plane defined by the two silhoue...

The evidence that semaphorins function as repulsive The function of the adult nervous system depends critiaxon guidance cues is extensive. Chicken collapsin-1 cally upon precisely sculptured neural circuits. Remark(Coll-1), a secreted semaphorin and the ortholog of the ably, each of the trillions of neurons that comprise the mammalian protein semaphorin III/D (Sema III), can adult nervous syste...

We consider multigrid iterative methods for the solution of electromagnetic scattering for dielectric materials. We show convergence of the iteration using coarse grids which are two to four times coarser in each dimension than the fine grid. These results allow a significant increase in problem size and solution speed, for a given hardware configuration. We report in particular on the solution...

This paper is concerned with accurate computations for matrix multiplication. An error-free transformation of matrix multiplication is developed by the authors. It transforms a product of two floatingpoint matrices to a sum of several floating-point matrices by using only floating-point arithmetic. This transformation is useful not only for accurate matrix multiplication but also for interval e...

Floating-point ALU The ease and accuracy of executing the multiplication and division operations by using either fixed-point addition or subtraction is what makes the logarithmic number system an attractive option. However, its main drawback is the complexity of performing addition and subtraction operations. In this paper, an analysis is carried out to compare the current state-of-the-art loga...