The role of error analysis in ELT

In Second Language Acquisition learners usually make errors that are part of the normal learning process. Errors Analysis is, generally, a method through which we can identify and classify these errors which, in turn, reflect a given stage in the learner’s interlanguage. In this article we are going to identify the errors made by a non-native speaker and, taking into consideration the Linguistic Category, the involved Specific Component and the Surface Strategy, we are going to classify such errors. Our discussion will be concerned with the relevance of the Error Analysis method and the possible limitation it shows in dealing with the non-native linguistic output. Generally, we assume that the Error Analysis method is relevant for academic and linguistic purposes, but it does not enable us to mirror accurately the learner’s linguistic competence. In sum, this is an introduction to Error Analysis in Mozambique and we hope English teachers will improve their EA skills through the intended introduction of Error Analysis in English teacher training courses

The judiciary and the contributions of the Brazilian code of civil procedure in legal security, predictability and consistency of decisions-model inspired by the English system (judicial accountability)

Based on the effectiveness of the guarantees of legal certainty, predictability and fairness, this article analyzes the main contributions of the Code of Civil Procedure (Law 13.105 / 2015). With this scope, we introduce initial considerations of some statistics on the increase of the litigation in Brazil and the phenomenon of judicial subjectivism; to explore some of the most relevant mechanisms brought by the CPC that contribute significantly to the construction of a legal environment based on the principles of legal certainty, stability and equality; with clear inspiration in the common law, especially in the English system. This study used the hypothetic-deductive method, based on the literature, the legal system and jurisprudence

The uses of Whitham hierarchies

We review some of the uses of Whitham hierarchies in the context of the theory of the prepotential in N=2 supersymmetric gauge theories. We focus on the structure of the contact terms in the twisted topological theory, and on the connection between Whitham hierarchies and the u-plane integrals for higher rank gauge groups, trying to put together the different approaches involved in this connection. We also review two other uses of the Whitham hierarchies: the interpretation of the slow times as supersymmetry breaking parameters, and the new techniques to extract instanton corrections using the RG equations written in terms of theta functions.Comment: 24 pages, PTP TeX. Talk given at the workshop ``Gauge theory and integrable models" (YITP, Kyoto), January 26-29, 199

On the BV formulation of boundary superstring field theory

We propose a Batalin-Vilkovisky (BV) formulation of boundary superstring field theory. The superstring field action is defined in terms of a closed one-form in the space of couplings, and we compute it explicitly for exactly solvable tachyon perturbations. We also argue that the superstring field action defined in this way is the partition function on the disc, in accord with a previous proposal.Comment: 11 pages, harvma

Aharonov-Bohm scattering on a cone

The Aharonov-Bohm scattering amplitude is calculated in the context of planar gravity with localized sources which also carry a magnetic flux. These sources cause space-time to develop conical singularities at their location, thus introducing novel effects in the scattering of electrically charged particles. The behaviour of the wave function in the proximity of the classical scattering directions is analyzed by means of an asymptotic expansion previously introduced by the author. It is found that, in contrast with the Aharonov-Bohm effect in flat space, integer values of the numerical flux can produce observable effects.Comment: 6 pages, 1 figur

Les Houches lectures on matrix models and topological strings

In these lecture notes for the Les Houches School on Applications of Random Matrices in Physics we give an introduction to the connections between matrix models and topological strings. We first review some basic results of matrix model technology and then we focus on type B topological strings. We present the main results of Dijkgraaf and Vafa describing the spacetime string dynamics on certain Calabi-Yau backgrounds in terms of matrix models, and we emphasize the connection to geometric transitions and to large N gauge/string duality. We also use matrix model technology to analyze large N Chern-Simons theory and the Gopakumar-Vafa transition.Comment: 63 pages, 8 figures, minor correction