scholarly journals Role of power series spaces in the structure theory of nuclear frechet spaces

2012 ◽  
Author(s):  
Tosun Terzioğlu
Keyword(s):  
Power Series ◽  
Structure Theory ◽  
Fréchet Spaces

Identifying Congruent Pragmatic Relations in Procedural Texts

1998 ◽  
Vol 1 (1) ◽  
pp. 45-82 ◽  
Author(s):  
Donia R. Scott ◽  
Judy Delin ◽  
Anthony F. Hartley
Keyword(s):  
Semantic Content ◽  
Automatic Generation ◽  
Structure Theory ◽  
Contrastive Analysis ◽  
Comparable Corpora ◽  
Household Products ◽  
French And English ◽  
Instructional Texts ◽  
Different Levels

In this paper, we present a methodology for the contrastive analysis of comparable corpora of instructional texts in different languages. The methodology is insensitive to the fact that the texts under comparison differ widely in their semantic content, and it can be reliably applied by multiple analysts. We show the results of an empirical study of cross-linguistic variation between Portuguese, French, and English instructions which follows this methodology. Using consumer instructions for ordinary household products in the three languages, we examine expressions of the two semantic relations, generation and enablement (cf. Goldman, 1970), and their available surface syntactic expressions. We examine the role of discourse perspective, as realised by rhetorical relations such as those employed within the framework of Rhetorical Structure Theory (RST), in further narrowing down the range of choices. We demonstrate that the three languages of study tolerate different levels of ambiguity, and prefer different forms of disambiguation and pragmatic signalling, attesting to the value of empirical methods for contrastive discourse study. The analysis was conducted with the aim of informing all levels of decision, from meaning to surface syntax, in the automatic generation of sets of instructional texts in those languages.

scholarly journals Role of initial magnetic disorder: A time-dependent ab initio study of ultrafast demagnetization mechanisms

2019 ◽  
Vol 5 (6) ◽  
pp. eaau8000 ◽  
Author(s):  
Zhanghui Chen ◽  
Lin-Wang Wang
Keyword(s):  
Density Functional ◽  
Zeeman Effect ◽  
Time Dependent ◽  
Structure Theory ◽  
Electron Interaction ◽  
Functional Theory ◽  
Spin Disorder ◽  
Magnetic Disorder ◽  
Large Systems

Despite more than 20 years of development, the underlying physics of the laser-induced demagnetization process is still debated. We present a fast, real-time time-dependent density functional theory (rt-TDDFT) algorithm together with the phenomenological atomic Landau-Lifshitz-Gilbert model to investigate this problem. Our Hamiltonian considers noncollinear magnetic moment, spin-orbit coupling (SOC), electron-electron, electron-phonon, and electron-light interactions. The algorithm for time evolution achieves hundreds of times of speedup enabling calculation of large systems. Our simulations yield a demagnetization rate similar to experiments. We found that (i) the angular momentum flow from light to the system is not essential and the spin Zeeman effect is negligible. (ii) The phonon can play a role but is not essential. (iii) The initial spin disorder and the self-consistent update of the electron-electron interaction play dominant roles and enhance the demagnetization to the experimentally observed rate. The spin disorder connects the electronic structure theory with the phenomenological three-temperature model.

scholarly journals Discourse relations and evaluation

Corpora ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. 169-190 ◽  
Author(s):  
Radoslava Trnavac ◽  
Debopam Das ◽  
Maite Taboada
Keyword(s):  
Structure Theory ◽  
Appraisal Theory ◽  
Corpus Study ◽  
Satellite Structure ◽  
Rhetorical Structure ◽  
Word Category ◽  
Relation Type ◽  
Discourse Relations

In this paper, we examine the role of discourse relations (relations between propositions) in the interpretation of evaluative or opinion words. Through a combination of Rhetorical Structure Theory (or RST; Mann and Thompson, 1988 ) and Appraisal Theory ( Martin and White, 2005 ), we analyse how different discourse relations modify the evaluative content of opinion words, and what impact the nucleus–satellite structure in RST has on the evaluation. We conduct a corpus study, examining and annotating over 3,000 evaluative words in fifty movie reviews in the SFU Review Corpus ( Taboada, 2008 ) with respect to five parameters: word category (noun, verb, adjective or adverb), prior polarity (positive, negative or neutral), RST structure (both nucleus–satellite status and relation type) and change of polarity as a result of being part of a discourse relation (Intensify, Downtone, Reversal or No Change). Results show that relations such as Concession, Elaboration, Evaluation, Evidence and Restatement most frequently intensify the polarity of opinion words, although the majority of evaluative words do not undergo changes in their polarity related to the type of relation that they are a part of. We also find that most opinion words (about 70 percent) are positioned in the nucleus, confirming a hypothesis based on the literature that nuclei are the most important units when extracting opinion automatically.

On the Photoabsorption by Permanganate Ions in Vacuo and the Role of a Single Water Molecule. New Experimental Benchmarks for Electronic Structure Theory

ChemPhysChem ◽  
2013 ◽  
Vol 14 (6) ◽  
pp. 1133-1137 ◽  
Author(s):  
Jørgen Houmøller ◽  
Sydney H. Kaufman ◽  
Kristian Støchkel ◽  
Lokesh C. Tribedi ◽  
Steen Brøndsted Nielsen ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Water Molecule ◽  
Electronic Structure Theory ◽  
Structure Theory ◽  
Single Water Molecule

Discursive Opportunities, Feeling Rules, and the Rise of Protests Against Aircraft Noise

2009 ◽  
Vol 14 (3) ◽  
pp. 337-356 ◽  
Author(s):  
Christian Bröer ◽  
Jan Duyvendak
Keyword(s):  
Aircraft Noise ◽  
Structure Theory ◽  
Discursive Construction ◽  
Political Opportunity Structure ◽  
Political Opportunity ◽  
Opportunity Structure ◽  
Political Opportunities ◽  
Do So ◽  
Feeling Rules

Social movement researchers propose different ways to incorporate meaning into structural approaches, notably into political opportunity structure (POS) theory. In this article we further develop one of the recent attempts to do so: discursive opportunity structure theory (DOS) as proposed by Koopmans and Olzak. We pay particular attention to the role of feelings. Although the DOS model correctly points toward the discursive construction of political opportunities, it does not explain why certain events are experienced as opportunities by potential activists. We propose the reason is two-fold: 1) discourse contains feeling rules and 2) discourse resonance implies the shaping of protest subjectivity. Our model is applied to a specific case: protests against aircraft noise annoyance in two countries. We show that feeling annoyed by aircraft sound is shaped by specific policy discourses, which then prepares the ground for protests.

Complemented infinite type power series subspaces of nuclear Fréchet spaces

1989 ◽  
Vol 283 (2) ◽  
pp. 193-202 ◽  
Author(s):  
A. Aytuna ◽  
J. Krone ◽  
T. Terzioğlu
Keyword(s):  
Power Series ◽  
Fréchet Spaces ◽  
Infinite Type ◽  
Type Power
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