Filaments have been studied in detail through observations and simulations. A range of numerical works separately investigated how chemistry diffusion effects, as well magnetic fields their structure impact the gas dynamics filament. However, non-ideal effects hardly explored thus far. We investigate magnetohydrodynamic (MHD) combined with a simplified chemical model affect evolution accretion ...

We show that there are 5 formulas in the language of the Turing degrees, D, with ,_ and ^, that de…ne the relations x00 y00, x00 = y00 and so x 2 L2(y) = fx yjx00 = y00g in any jump ideal containing 0(!). There are also 6& 6 and 8 formulas that de…ne the relations w = x00 and w = x0, respectively, in any such ideal I. In the language with just the quanti…er complexity of each of these de…nition...

(1) Let L be a non empty reflexive transitive relational structure and x, y be elements of L. If x ≤ y, then compactbelow(x)⊆ compactbelow(y). (2) For every non empty reflexive relational structure L and for every element x of L holds compactbelow(x) is a subset of CompactSublatt(L). (3) For every relational structure L and for every relational substructure S of L holds every subset of S is a s...

This study examined the relationships between L2 learners' anxiety, self-confidence and oral performance. The participants were 132 Korean college students who enrolled the English conversation classes in 2004. Questionnaires related to anxiety and self-confidence were given to the students and their oral performances were assessed in terms of IATEFL's criteria. Factor analysis indicated that c...

Abstract Second language (L2) teachers may shy away from self-assessments because of warnings that students are not accurate self-assessors. This information stems meta-analyses in which self-assessment scores on average did correlate highly with proficiency test results. However, researchers mostly used Pearson correlations, when polyserial could be used. Furthermore, today can computer adapti...

Finite impulse response (FIR) filters obtained with the classical L2 method have performance that is very sensitive to the form of the ideal response selected for the transition region. It is known that design requirements do not constraint in any way the ideal response inside this region. Most existing techniques utilize this flexibility. By selecting various classes of functions to describe t...