That-clauses: Retention and Omission of Complementizer that in some Varieties of English

An OBJECT CLAUSE, also sporadically referred to as a COMMENT CLAUSE (Warner 1982: 169; Huddleston & Pullum 2002: 951), is that kind of clause functioning as the direct object of the matrix verb. In English, the most common type of object clause is introduced by the complementizer that, hence its traditional label that-clause (Quirk et al. 1985: 1049). Regarding its different usages when occurring in post-predicate position, these constructions are employed to report the speech (i.e. He said that nine indictments have been returned publicly in such investigations), thoughts (i.e. I think Stuart’s gone a bit mad) or attitudes (i.e. I was quite confident that it would stay in very well), among others (Biber et al. 1999: 660-661). As observed, the complementizer that can either be retained or omitted with no meaning alteration and Biber et al. (1999: 681-682) enumerated a series of discourse factors favouring that omission (the presence of co-referential subjects in the main clause and the that-clause, among others) and favouring that retention (the use of coordinated that-clauses, among others). Even though the topic has been extensively researched in British and American English (Biber 1999) and the history of English (Fanego 1990a, 1990b; Suárez-Gómez 2000; Calle- Martín and Romero-Barranco 2014), the academia is still in want of such studies in other varieties of contemporary English. This considered, the present paper will analyze that-clauses in Indian English, Hong Kong English and New Zealand English with the following objectives: 1) to analyze the distribution of that/zero in the mentioned varieties of English; 2) to assess the phenomenon in terms of register and the informants’ age and gender; 3) to classify the instances regarding the verb taking the that-clause (i.e. mental verbs, speech act verbs and other communication verbs); and 4) to evaluate the contribution of some factors favouring the omission and the retention of complementizer that in these environments. The source of evidence comes from the New Zealand, Indian and Hong Kong components of the International Corpus of English.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

‘I got into the room by means of a picklock key and found him’ Complex Prepositions in Early Modern English

English complex prepositions can be subdivided into two-word and three-word sequences, the former containing an adverb, adjective or conjunction together with a simple preposition (i.e. instead ADV of PREP ); and the latter being composed of a preposition + noun + preposition (i.e. by PREP means NOUN of PREP ) (Quirk et al. 1985: 669-670). The complex prepositions BY WAY OF and BY MEANS OF are the result of a process of grammaticalization in which they lost part of their lexical functions and later were reanalysed as functional elements expressing instrumentality (Hoffman 2005: 71-76). From an etymological point of view, these words have different backgrounds. The word WAY, on the one hand, can be traced back to the Old English period (c. 950), with the meaning of ‘road, path’ (OED). MEAN, on the other, is a French borrowing, first attested in 1374, with the meaning of ‘an intermediary agent or instrument’ (OED). As complex prepositions in English, BY WAY OF and BY MEANS OF were first attested in 1390 and 1427, respectively (OED). The present paper has been conceived with the following objectives: 1) to assess the grammaticalization process by which nouns such as WAY and MEAN developed prepositional functions meaning instrumentality; 2) to analyse the use and distribution of BY WAY OF and BY MEANS OF in the History of English; and 3) to determine any likely preference in terms of the informants’ gender and social class. The source of evidence comes from the the Corpus of Early English Correspondence and the Old Bailey Corpus.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Binarized support vector machines

The widely used Support Vector Machine (SVM) method has shown to yield very good results in Supervised Classification problems. Other methods such as Classification Trees have become more popular among practitioners than SVM thanks to their interpretability, which is an important issue in Data Mining. In this work, we propose an SVM-based method that automatically detects the most important predictor variables, and the role they play in the classifier. In particular, the proposed method is able to detect those values and intervals which are critical for the classification. The method involves the optimization of a Linear Programming problem, with a large number of decision variables. The numerical experience reported shows that a rather direct use of the standard Column-Generation strategy leads to a classification method which, in terms of classification ability, is competitive against the standard linear SVM and Classification Trees. Moreover, the proposed method is robust, i.e., it is stable in the presence of outliers and invariant to change of scale or measurement units of the predictor variables. When the complexity of the classifier is an important issue, a wrapper feature selection method is applied, yielding simpler, still competitive, classifiers

Warp evidences in precessing galactic bar models

Most galaxies have a warped shape when they are seen from an edge-on point of view. The reason for this curious form is not completely known so far and in this work we apply dynamical system tools to contribute to its explanation. Starting from a simple, but realistic, model formed by a bar and a disc, we study the effect produced by a small misalignment between the angular momentum of the system and its angular velocity. To this end, a precession model is developed and considered, assuming that the bar behaves like a rigid body. After checking that the periodic orbits inside the bar keep being the skeleton of the inner system, even after inflicting a precession to the potential, we compute the invariant manifolds of the unstable periodic orbits departing from the equilibrium points at the ends of the bar to get evidences of their warped shapes. As it is well known, the invariant manifolds associated with these periodic orbits drive the arms and rings of barred galaxies and constitute the skeleton of these building blocks. Looking at them from a side-on viewpoint, we find that these manifolds present warped shapes as those recognized in observations. Lastly, test particle simulations have been performed to determine how the stars are affected by the applied precession, confirming this way the theoretical results obtained.Comment: 14 pages, 21 figures, Accepted for publication in A&A (15th Jan 2016

Depression-related difficulties disengaging from negative faces are associated with sustained attention to negative feedback during social evaluation and predict stress recovery

The present study aimed to clarify: 1) the presence of depression-related attention bias related to a social stressor, 2) its association with depression-related attention biases as measured under standard conditions, and 3) their association with impaired stress recovery in depression. A sample of 39 participants reporting a broad range of depression levels completed a standard eye-tracking paradigm in which they had to engage/disengage their gaze with/from emotional faces. Participants then underwent a stress induction (i.e., giving a speech), in which their eye movements to false emotional feedback were measured, and stress reactivity and recovery were assessed. Depression level was associated with longer times to engage/disengage attention with/from negative faces under standard conditions and with sustained attention to negative feedback during the speech. These depression-related biases were associated and mediated the association between depression level and self-reported stress recovery, predicting lower recovery from stress after giving the speech

On Minimal Trajectories for Mobile Sampling of Bandlimited Fields

We study the design of sampling trajectories for stable sampling and the reconstruction of bandlimited spatial fields using mobile sensors. The spectrum is assumed to be a symmetric convex set. As a performance metric we use the path density of the set of sampling trajectories that is defined as the total distance traveled by the moving sensors per unit spatial volume of the spatial region being monitored. Focussing first on parallel lines, we identify the set of parallel lines with minimal path density that contains a set of stable sampling for fields bandlimited to a known set. We then show that the problem becomes ill-posed when the optimization is performed over all trajectories by demonstrating a feasible trajectory set with arbitrarily low path density. However, the problem becomes well-posed if we explicitly specify the stability margins. We demonstrate this by obtaining a non-trivial lower bound on the path density of an arbitrary set of trajectories that contain a sampling set with explicitly specified stability bounds.Comment: 28 pages, 8 figure

Analysis of energy detection of unknown signals under Beckmann fading channels

(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.The Beckmann fading is a general multipath fading model which includes Rice, Hoyt and Rayleigh fading as particular cases. However, the generality of the Beckmann fading also implies a significant increased mathematical complexity. Thus, relatively few analytical results have been reported for this otherwise useful fading model. The performance of energy detection for multi-branch receivers operating under Beckmann fading is here studied, and the inherent analytical complexity is here circumvented by the derivation of a closed-form expression for the generalized moment generating function (MGF) of the received signal-to-noise ratio (SNR), which is a new and useful result, as it is key for evaluating the receiver operating characteristics. The impact of fading severity on the probability of missed detection is shown to be less critical as the SNR decreases. Monte Carlo simulations have been carried out in order to validate the obtained theoretical expressions.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Proyecto MINECO-FEDER TEC2013-42711-R y TEC2013-44442-P. Junta de Andalucía P11-TIC-7109