Antisymmetry And The Lefthand In Morphology

As Kayne (1994) has shown, the theory of antisymmetry of syntax also provides an explanation of a structural property of morphological complexes, the Righthand Head Rule. In this paper we show that an antisymmetry approach to the Righthand Head Rule eventually is to be preferred on empirical grounds, because it describes and explains the properties of a set of hitherto puzzling morphological processes -known as discontinuous affixation, circumfixation or parasyn-thesis. In considering these and a number of more standard morphological structures, we argue that one difference bearing on the proper balance between morphology and syntax should be re-installed (re- with respect to Kayne), a difference between the antisymmetry of the syntax of morphology and the antisymmetry of the syntax of syntax proper.Com Kayne (1994) mostra, la teoria de l'antisimetria en la sintaxi també ens dóna una explicació d'una propietat estructural de complexos morfològics, la Regla del Nucli a la Dreta. En aquest article mostrem que un tractament antisimètric de la Regla del Nucli a la Dreta es prefereix eventualment en dominis empírics, perquè descriu i explica les propietats d'una sèrie de processos fins ara morfològics -coneguts com afixació discontínua, circumfixació o parasíntesi. Considerant aquestes i altres estructures morfològiques més estàndards, proposem que una diferència que té a veure amb l'equilibri propi entre morfologia i sintaxi s'hauria de reprendre (re- respecte a Kayne), una diferència entre la antisimetria de la sintaxi de la morfologia i la antisimetria de la sintaxi de la pròpia sintaxi

Recherches biostratigraphiques dans quelques coupes du Famennien de l'Avesnois (Nord de la France)

Conodonts and Goniatites from four "old" famennian sections in the Avesnois (France) have been carefully studies. For the first time, the biostratigraphic position of these sections is determined

Experiences with Distributed Acoustic Sensing using both straight and helically wound fibers in surface-deployed cables -- a case history in Groningen, The Netherlands

Distributed Acoustic Sensing (DAS) has been limited in its use for surface-seismic reflection measurements, due to the fiber's decreased sensitivity when the fiber is deployed horizontally. Deploying the fiber in a helically wound fashion has the promise of being more sensitive to broadside waves (e.g. P-wave reflections) and less sensitive to surface waves than straight fiber. We examine these claims by burying a set of straight fibers (SF) and helically wound fibers (HWF) with different wrapping angles, using standard and engineered fibers. These fibers were buried in a 2 m deep trench in a farmland in the province of Groningen in the Netherlands. They are linked up to two interrogating systems and an electrically driven vibrator was used as a seismic source. We observe in our field data that using HWF has a destructive effect on the surface-wave amplitudes. Our data confirmed the effect of the wrapping angle on the polarity of the surface-wave arrival and the dampening effect of the helical winding, both behaving in quite a predictable fashion. Apart from the effect of the wrapping angle, the different design choices, e.g. cable filling and material type, did not show a significant effect on the amplitude of the signals. As for P-wave reflections, we observe that both engineered SF and HWF provide reflection images comparable to those obtained from the geophone data despite the straight fiber's decreased broadside sensitivity. A polarity reversal and an amplitude difference between SF and HWF fibers are observed. Finally, we show that the combined use of SF and HWF proved to be useful since SF showed better sensitivity in the shallower part and HWF in the deeper part.Comment: This manuscript has been submitted to GEOPHYSICS journa

Enhanced pre-frontal functional-structural networks to support postural control deficits after traumatic brain injury in a pediatric population

Traumatic brain injury (TBI) affects the structural connectivity, triggering the re-organization of structural-functional circuits in a manner that remains poorly understood. We focus here on brain networks re-organization in relation to postural control deficits after TBI. We enrolled young participants who had suffered moderate to severeTBI, comparing them to young typically developing control participants. In comparison to control participants, TBI patients (but not controls) recruited prefrontal regions to interact with two separated networks: 1) a subcortical network including part of the motor network, basal ganglia, cerebellum, hippocampus, amygdala, posterior cingulum and precuneus; and 2) a task-positive network, involving regions of the dorsal attention system together with the dorsolateral and ventrolateral prefrontal regions

Transdimensional surface wave tomography of the near-surface: Application to DAS data

Distributed Acoustic Sensing (DAS) is a novel technology that allows sampling of the seismic wavefield densely over a broad frequency band. This makes it an ideal tool for surface wave studies. In this study, we evaluate the potential of DAS to image the near-surface using synthetic data and active-source field DAS data recorded with straight fibers in Groningen, the Netherlands. First, we recover the laterally varying surface wave phase velocities (i.e., local dispersion curves) from the fundamental-mode surface waves. We utilize the Multi Offset Phase Analysis (MOPA) for the recovery of the laterally varying phase velocities. In this way, we take into account the lateral variability of the subsurface structures. Then, instead of inverting each local dispersion curve independently, we propose to use a novel 2D transdimensional surface wave tomography algorithm to image the subsurface. In this approach, we parameterize the model space using 2D Voronoi cells and invert all the local dispersion curves simultaneously to consider the lateral spatial correlation of the inversion result. Additionally, this approach reduces the solution nonuniqueness of the inversion problem. The proposed methodology successfully recovered the shear-wave velocity of the synthetic data. Application to the field data also confirms the reliability of the proposed algorithm. The recovered 2D shear-wave velocity profile is compared to shear-wave velocity logs obtained at the location of two boreholes, which shows a good agreement