scholarly journals Producing filler-gap dependencies: structural priming evidence for two distinct types of combinatorial processes in production

2022 ◽  
Author(s):  
Shota Momma

A previous model of long-distance dependency production claims that speakers compose clause-taking verbs like believe and the complementizer of their complement clauses (that or the null complementizer) differently when there is a cross-clausal filler-gap dependency crossing the complementizer structure (e.g., Who did the breeder believe (that) the dog bit?) than when there is not (e.g., The breeder believed (that) the dog bit them.). This claim implicates two distinct structures headed by clause-taking verbs like believe. Under a certain assumption about the lexical boost effect, this model predicts that the lexical boost effect for the that priming occurs only when prime and target sentences both contain a cross-clausal filler-gap dependency or when neither does. In the current study, a computational model of structural priming implementing the core claims of the previous filler-gap dependency production model was built to show that this prediction coherently follows from the model. The prediction of the model was then tested in five recall based structural priming experiments. Speakers showed a larger complementizer priming when prime and target sentences share a clause-taking verb (i.e., the lexical boost effect). But the lexical boost effect was selective to when both prime and target sentences contained a cross-clausal filler-gap dependency (Experiment 3) and when neither did (Experiment 1). Critically, the lexical boost effect was absent when only either prime or target sentences contained a filler-gap dependency crossing the complementizer structure (Experiments 2, 4, and 5), confirming the prediction of the model.

Genetics ◽  
2003 ◽  
Vol 163 (2) ◽  
pp. 823-831
Author(s):  
J A Sved ◽  
H Yu ◽  
B Dominiak ◽  
A S Gilchrist

Abstract Long-range dispersal of a species may involve either a single long-distance movement from a core population or spreading via unobserved intermediate populations. Where the new populations originate as small propagules, genetic drift may be extreme and gene frequency or assignment methods may not prove useful in determining the relation between the core population and outbreak samples. We describe computationally simple resampling methods for use in this situation to distinguish between the different modes of dispersal. First, estimates of heterozygosity can be used to test for direct sampling from the core population and to estimate the effective size of intermediate populations. Second, a test of sharing of alleles, particularly rare alleles, can show whether outbreaks are related to each other rather than arriving as independent samples from the core population. The shared-allele statistic also serves as a genetic distance measure that is appropriate for small samples. These methods were applied to data on a fruit fly pest species, Bactrocera tryoni, which is quarantined from some horticultural areas in Australia. We concluded that the outbreaks in the quarantine zone came from a heterogeneous set of genetically differentiated populations, possibly ones that overwinter in the vicinity of the quarantine zone.


2008 ◽  
Vol 17 (10) ◽  
pp. 2374-2378 ◽  
Author(s):  
I. BRIDA ◽  
F. M. NUNES

We have developed a microscopic cluster model for two-neutron halo nuclei with special attention paid to long distance correlations between the core and the valence neutrons. The emphasis put on a good treatment of the asymptotic region is necessary for nuclear reaction calculations involving these nuclei. In this contribution, we present the first results of our model applied to the ground state of 6 He bound by an effective central Minnesota N-N interaction, and compare with experiment and other theoretical models.


2000 ◽  
Vol 45 (3) ◽  
pp. 449-474 ◽  
Author(s):  
PETER SCOTT

Structural, organizational, and technological changes in British industry during the interwar years led to a decline in skilled and physically demanding work, while there was a dramatic expansion in unskilled and semiskilled employment. Previous authors have noted that the new un/semiskilled jobs were generally filled by “fresh” workers recruited from outside the core manufacturing workforce, though there is considerable disagreement regarding the composition of this new workforce. This paper examines labour recruitment patterns and strategies using national data and case studies of eight rapidly expanding industrial centres. The new industrial workforce is shown to have been recruited from a “reserve army” of workers with the common features of relative cheapness, flexibility, and weak unionization. These included women, juveniles, local workers in poorly paid nonindustrial sectors, such as agriculture, and (where these other categories were in short supply) relatively young long-distance internal migrants from declining industrial areas.


2006 ◽  
Vol 1 ◽  
pp. 99-118
Author(s):  
Anna Bondaruk ◽  

This paper aims at establishing a typology of control in Irish and Polish non-finite clauses. First, seven classes of predicates taking non-finite complements in Irish and Polish are specified. They include: modal (e.g. must), aspectual (e.g. start), implicative (e.g. manage), factive (e.g. like), prepositional (e.g. say), desiderative (e.g. want) and interrogative verbs (e.g. ask). Whereas modals and aspectuals typically take raising complements, the remaining predicate classes require control complements. Control clauses in Polish always have a covert PRO subject, while in Irish their subject may be either the covert PRO or an overt DP. The PRO subject may be either obligatorily controlled or is controlled optionally. The criteria adopted in distinguishing obligatory control (OC) from non-obligatory control (NOC) are based on Landau (2000) and comprise the following: (1) a. Arbitrary Control is impossible in OC, possible in NOC; b. Long-distance control is impossible in OC, possible in NOC; c. Strict reading of PRO is impossible in OC, possible in NOC; d. De re reading of PRO is impossible in OC (only de se), possible in NOC. The validity of these criteria for establishing the OC/NOC contrast in Irish and Polish is scrutinised. Various contexts are examined where both these control types obtain in the two languages studied. Most notably, OC tends to occur in complement clauses, while NOC is often found in subject and adjunct clauses both in Irish and Polish. Within the class of OC, two subgroups are recognised, namely exhaustive control (EC) and partial control (PC). The former control type holds when the reference of PRO and its antecedent are identical, whereas the latter type of control is attested when the reference of PRO covers the reference of its antecedent, but is not entirely co-extensive with it, e.g.: (2) a. Maryᵢ managed [PROᵢ to win] = EC; b. Maryᵢ wanted [PRO + to meet at 6] = PC. EC and PC are found in analogous contexts in Irish and Polish. EC occurs in complements to modal, implicative and aspectual verbs, while PC is limited to complements to factive, desiderative, prepositional and interrogative predicates. It is argued that EC-complements lack independent tense specification, while PC-complements are marked for tense independent from the one expressed in the matrix clause. PC-complements both in Irish and Polish must contain a semantically plural predicate (cf. meet in (2b)), but they can never exhibit a syntactically plural element.


1997 ◽  
Vol 24 (6) ◽  
pp. 661 ◽  
Author(s):  
D. B. Lindenmayer ◽  
A. Welsh ◽  
C. F. Donnelly

Radio-tracking was used to examine the spatial configuration and co-occupancy of large trees with hollows occupied by 16 mountain brushtail possums (Trichosurus caninus) at Cambarville in the central highlands of Victoria, south-eastern Australia. The distance that animals moved between trees on successive days was also examined. Our analyses showed that animals often remained in a given den tree on successive days. On nights when animals did shift between den sites, they typically moved to a new tree that was relatively nearby (< 200 m). Long-distance movements (e.g. > 300 m) between den trees were rare. Considerable variation was found between individuals in the size of areas encompassing trees used frequently (≥5 times) (‘core denning range’) and those encompassing all occupied trees [i.e. including those used infrequently (< 5 times)] (‘total denning range’). The mean area of the core denning range averaged about 1·1 ha for males and 0·7 ha for females. The mean value for the total denning range was approximately 2·6 ha for males and females respectively. Considerable overlap was found in the total denning ranges of pairs of adult males and pairs of adult females. For most animals, the total denning range was shared with the total denning ranges of several other animals. There was substantial variation in the extent of this overlap, ranging from complete enclosure to the sharing of a single tree. The extent of overlap was more limited for the core denning ranges, particularly among females. We observed differences in the extent of the overlap of the total denning ranges of pairs of males and pairs of females in the breeding season (January–March) and non-breeding season (the remaining months of the year). Fewer instances of overlapping total denning ranges among pairs of both males and females were found during the breeding season. The total denning ranges in the breeding season were generally smaller than those in the non- breeding season. Simultaneous co-occupancy of a given den tree by T. caninus was relatively common. Unexpectedly, there was a number of instances of groups of three or four adult animals sharing the same den site on the same night. We recorded several instances of sharing by pairs of animals of the same sex, especially adult males. However, most records of simultaneous tree use were by an adult male and an adult female T. caninus. The extent of overlap in the denning ranges of animals and the prevalence of simultaneous co-occupancy of den trees indicate that the social behaviour of T. caninus at Cambarville may be different from that observed among populations of the species elsewhere in Australia. Possible reasons for these differences are outlined.


2019 ◽  
Vol 30 (3) ◽  
pp. 386-395 ◽  
Author(s):  
Conrad Perry ◽  
Marco Zorzi ◽  
Johannes C. Ziegler

Learning to read is foundational for literacy development, yet many children in primary school fail to become efficient readers despite normal intelligence and schooling. This condition, referred to as developmental dyslexia, has been hypothesized to occur because of deficits in vision, attention, auditory and temporal processes, and phonology and language. Here, we used a developmentally plausible computational model of reading acquisition to investigate how the core deficits of dyslexia determined individual learning outcomes for 622 children (388 with dyslexia). We found that individual learning trajectories could be simulated on the basis of three component skills related to orthography, phonology, and vocabulary. In contrast, single-deficit models captured the means but not the distribution of reading scores, and a model with noise added to all representations could not even capture the means. These results show that heterogeneity and individual differences in dyslexia profiles can be simulated only with a personalized computational model that allows for multiple deficits.


2011 ◽  
Vol 42 (4) ◽  
pp. 651-669 ◽  
Author(s):  
Ur Shlonsky ◽  
Gabriela Soare

Why and its counterparts in some languages are argued to be externally merged in a low left-peripheral specifier of a dedicated functional category and subsequently moved to a criterial position higher in the left-peripheral space. The analysis considers both short- and long-distance construals of why, asymmetries of why-extraction in finite and nonfinite complement clauses, the position of ‘why’ in a multiple wh-movement language like Romanian, and the differences between why and how come. The analysis sharpens the formal differences between movement to a criterial position and movement out of cyclic domains via escape hatches.


2009 ◽  
Vol 87 (3) ◽  
pp. 251-254 ◽  
Author(s):  
Ariel Edery ◽  
Luca Fabbri ◽  
M. B. Paranjape

We consider a Georgi–Glashow model conformally coupled to gravity. The conformally invariant action includes a triplet of scalar fields and SO(3) non-Abelian gauge fields. However, the usual mass term μ2ϕ2 is forbidden by the symmetry, and this role is now played by the conformal coupling of the Ricci scalar to the scalar fields. Spontaneous symmetry breaking occurs via gravitation. The spherically symmetric solutions correspond to localized solitons (magnetic monopoles) in asymptotically anti-de Sitter (AdS) spacetime and the metric outside the core of the monopole is found to be Schwarzschild–AdS. Though conformal symmetry excludes the Einstein–Hilbert term in the original action, it emerges in the effective action after spontaneous symmetry breaking and dominates the low-energy–long-distance regime outside the core of the monopole.


Author(s):  
R. B. Litman ◽  
H. A. Scarton ◽  
K. R. Wilt ◽  
G. J. Saulnier

An ‘acoustic fiber’, analogous to optical fiber, is presented as a means of long-distance data and energy transfer. Low-loss axial guided waves are produced along a cable-like waveguide, which is composed of a solid core and a cladding layer, where the cladding’s acoustic speeds of sound, both longitudinal and transverse, exceed those of the core. A similar condition exists in glass fiber optic cables consisting of a core surrounded by a cladding of lower index of refraction. This results in total internal reflection of light at the core-cladding interface and effective confinement of light to the core. A specific acoustic waveguide construction is analyzed, composed of an aluminum cladding with longitudinal wave speed of 6.198 km/s and shear wave of 3.122 km/s and copper core with longitudinal speed of 4.505 km/s, and shear speed of 2.164 km/s. Finite element simulations show that a guided wave mode that is confined largely to the core exists and is capable of propagating long distances with very little loss to the surroundings. A 6 mm diameter aluminum-cladded copper core (2 mm diameter) fiber was found to have a propagation loss of 0.023 dB/m when operating at 2 MHz predict (neglecting material attenuation). When including material attenuation, the same waveguide produced a propagation loss of 0.24 dB/m. Similarly, a 12 mm cladding with 4.8 mm core at 1 MHz had losses of 0.10 dB/m, and a 22 mm diameter cladding with 9 mm core at 500 kHz had losses of 0.062 dB/m. Relationships were found between frequency, total diameter and core diameter yielding the highest efficiencies. The minimum total dimension of an aluminum-clad-copper acoustic fiber was found to have an inverse relationship with frequency. The optimum ratio of core to total diameter was about 0.45 but between values of 0.35 and 0.5, attenuation was relatively constant (insensitive to frequency). Outside of that range, attenuation climbed rapidly. Due to this property, attenuation in properly designed fibers should always be dominated by, and roughly equivalent to, the material attenuation rather than attenuation due to leakage.


2017 ◽  
Author(s):  
Fabian Ochsenfeld

The current debate over distributional implications of the crisis-ridden Economic and Monetary Union (EMU) is heavily biased towards inter-national accounts. Little attention is paid to who wins and who loses out intra-nationally. I argue that in Germany the EMU has reinforced dualization, the insider-outsider cleavage in the country’s welfare state and production model. To scrutinize this argument, I analyze longitudinal linked employer-employee data (N&gt;9.6 mio) and pursue a mechanistic three-step identification strategy: First, I illustrate how the introduction of the Euro distorted real interest and exchange rates within the Eurozone. Second, I demonstrate how these imbalances redistributed rents from the domestic sector, in particular from construction, to the core manufacturing industry. Third, I show how this shift in industry rents reverberated to the wage distribution and increased inequality. The study contributes to resolve the puzzle why wage inequality in Germany increased through a fanning out of the wage distribution whereas countries similarly exposed to technological change and globalization grew unequal through a polarization of their wage distribution.


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