third molar eruption is an unpredictable event. occasionally, mandibular third molars undergo angular changes in young adults. this rotational drift is of unknown etiology, is not predictable and may facilitate the eruption or may make the impaction worse. a rare case is presented with severe rotational drift of a mesioangularly impacted mandibular third molar.

In this paper we solve a long-standing open problem by showing that strict superposition|that is, superposition without equality factoring|is refutationally complete. The diiculty of the problem arises from the fact that the strict calculus, in contrast to the standard calculus with equality factoring, is not compatible with arbitrary removal of tautologies, so that the usual techniques for pro...

A method of preserving the sequential semantics in parallel programs with rst-class continuations is to invoke continuations non-speculatively. This method, which prevents a continuation from being invoked as long as its invocation can infringe the sequential semantics, reduces parallelism by the severe conditions that it imposes, especially on upward uses. In this paper, we present new conditi...

MACRO can detect three topologies of neutrino induced events, corresponding to different parent neutrino energies. The most numerous sample is made of upward throughgoing muons induced by atmospheric neutrinos of average energy 100 GeV. The ratio of the observed over the expected events is 0.74 ± 0.036stat ± 0.046sys ± 0.13theor. The observed zenith distribution does not fit the expected one in...

An asymmetric multivariate generalization of the recently proposed class of normal mixture GARCH models is developed. Issues of parametrization and estimation are discussed. Conditions for covariance stationarity and the existence of the fourth moment are derived, and expressions for the dynamic correlation structure of the process are provided. In an application to stock market returns, it is ...

This paper proposes a logic that is specially designed to deal with rules and the reasons based on them. Although the logic is inspired by characteristics of legal reasoning, it aspires to be suitable for dealing with other kinds of rule guided reasoning as well. It is characteristic for this logic that rules are treated as individuals rather than as conditionals, and that application of a rule...

The scintillation data (S4-index) at the L-band frequency of 1.575 GHz recorded from 18 GPS receivers installed at different locations in India under the GAGAN project has given an unique opportunity, for the first time in the Indian region, to make a simultaneous study of spatio-temporal and intensity characteristics of the trans-ionospheric scintillations during the low sunspot activity (LSSA...

Abstract This paper carries out three-dimensional transient simulation calculation of hot spot distribution oil immersed air-cooled transformer under different working conditions based on the finite element method, couples electromagnetic loss result unit to temperature field, and takes it as heat source establish mapping relationship magnetic flow multi physical field. Taking SFZ11-30000/110 a...

The occurrence of post-sunset equatorial spread-F (ESF) could have detrimental effects on trans-ionospheric radio wave propagation used in modern communications systems. This problem calls for a simple but robust model that accurately predicts the ESF. Logistic regression was implemented to daily ESF as function evening upward plasma drift (v). use logistic is formalized by y^=1/[1+exp(−z)], wh...

Rooted trees are usually drawn planar and upward , i.e., without crossings and with parents placed above their children. In this paper we investigate the area requirement of planar upward drawings of trees, and present optimal algorithms for constructing such drawings.