Social Links from Latent Topics in Microblogs

Language use is overlaid on a network of social con-nections, which exerts an influence on both the top-ics of discussion and the ways that these topics can be expressed (Halliday, 1978). In the past, efforts t

Adaptive Perturbation Theory: Quantum Mechanics and Field Theory

Adaptive perturbation is a new method for perturbatively computing the eigenvalues and eigenstates of quantum mechanical Hamiltonians that are widely believed not to be solvable by such methods. The novel feature of adaptive perturbation theory is that it decomposes a given Hamiltonian, $H$, into an unperturbed part and a perturbation in a way which extracts the leading non-perturbative behavior of the problem exactly. In this talk I will introduce the method in the context of the pure anharmonic oscillator and then apply it to the case of tunneling between symmetric minima. After that, I will show how this method can be applied to field theory. In that discussion I will show how one can non-perturbatively extract the structure of mass, wavefunction and coupling constantComment: 10 pages, 4 figures, uses psfig.sty. Conference talk Light Cone 2005 -- Cairns This paper is being replaced to add references to previously published work that I became aware of after posting the pape

I Knew There Was Something Wrong with That Paper : Scientific Rhetorical Styles and Scientific Misunderstandings

This selection unpacks scientific prose and claim substantiation for Nobel Prize winner, Stan Prusiner, in the transmissible spongiform encephlopathies field (i.e., mad cow disease). Applying linguistic strategies such as M. A. K. Halliday\u27s favorite clause type, the author examines argumentative strategies in dense scientific prose both in bold and cautious rhetorical styles and invented lexical changes in new scientific development

A Cluster Algorithm for the Z2Z_2 Kalb-Ramond Model

A cluster algorithm is presented for the $Z_2$ Kalb-Ramond plaquette model in four dimensions which dramatically reduces critical slowing. The critical exponent $z$ is reduced from $z>2$ (standard Metropolis algorithm) to $z= 0.32\pm0.06$. The Cluster algorithm updates the monopole configuration known to be responsible for the second order phase transition.Comment: 9 pages, LaTeX + 7 figures in self-extracting shell archiv

Equity trend prediction with neural networks

This paper presents results of neural network based trend prediction for equity markets. Raw equity exchange data is pre-processed before being fed into a series of neural networks. The use of Self Organising Maps (SOM) is investigated as a data classification method to limit neural network inputs and training data requirements. The resulting primary simulation is a neural network that can prediction whether the next trading period will be, on average, higher or lower than the current. Combinations of pre-processing and feature extracting SOM’s are investigated to determine the more optimal system configuration

DISCOURSE CONNECTORS IN ARGUMENTATIVE WRITINGS PRODUCED BY INDONESIAN EFL UNIVERSITY STUDENTS

In producing a good paragraph, there are two main characteristics in common coherence and cohesion(Boardman, C.A & Frydenberg, J., 2002). McDonough, S.(2002) defines cohesion as a general name for linguistic devices which signal the textual structure which represents the coherence of the message encoded. To adopt the taxonomies of Halliday and Hasan (1976) and Halliday & Mattiessen (2004) to account for the semantic and syntactic functions of discourse connectors, this study aimed to investigate the use of discourse connectors employed by university students in their argumentative writings. The subjects of the study were the argumentative writings composed by English-major undergraduate students. Out of 56 compositions, 30 were chosen as the sample. The data were analyzed quantitatively. The findings revealed that the students were able to use a variety of discourse connectors in their writing. Moreover, among a wide range of discourse connectors; and, or, because (of),but, and so were mostly found in the compositions. The paper was concluded with some recommendations and suggestions that should inform EFL writing instruction in this part of the world and in other similar context

Halliday\u27s Functional Grammar: Philosophical Foundation and Epistemology

It is difficult to track the philosophy foundation and epistemology of systemic functional grammar (SFG) formulated by Halliday in the 1980s as this kind of grammar views language as a systemic resource for meaning. Besides, it has had global impacts on linguistics and flourished in contemporary linguistic theory. Anyone who is familiar with Halliday\u27s work realizes that his SFG is an approach designed to analyze English texts. Halliday (1994: xv) explicitly states that “to construct a grammar for purposes of text analysis: one that would make it possible to say sensible and useful things about any text, spoken or written, in modern English.” The aim of this study is not about the applicability of SFG to text analysis as many researchers and scholars do. Our efforts are made to clarify the philosophical foundation of Halliday\u27s SFG. The paper presents on triangle: (i) language, mind and world; (ii) and empiricism in Halliday\u27s SFG

Bridging Civilisations: The Application of Systemic-Functional Semiotics in the Comparison of Drawings from China and Europe.

This paper discusses the application of systemic-functional semiotics in the analysis of visual materials, and, specifically, presents an original systemic-functional model that is intended to facilitate both the analysis and synthesis of drawings in a cross-cultural context. The model is explained as developing from Michael O’Toole’s systemic-functional semiotic model for painting (O'TOOLE, 2011) itself an adaptation of Michael Halliday’s systemic-functional semiotic model for language (HALLIDAY, 1973 , HALLIDAY, 1978, HALLIDAY, 1985