25 research outputs found

    The production of relative clauses by Italian cochlear-implanted and hearing children

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    This study investigates the elicited production of subject (SRs) and object relatives (ORs) in Italian by 13 cochlear-implanted (CI) children (age:7;9-10;8) to determine whether and to what extent they differ from three groups of 13 normal hearing (NH) children matched on morphosyntactic abilities (age:5;0-7;9), chronological age (age:7;5-10;3), and auditory age (e.g. duration of CI use (age:4;11-9;4)) respectively. Results showed that for CI children, SRs are more accurate than ORs. The same asymmetry is observed in all NH groups, although NH children’s percentages of target responses are higher for both sentence typologies. The syntactic difficulty with ORs led CI and NH groups to adopt a considerable number of answering strategies: among them, production of passive relatives, causative constructions, and wh- elements replacing the complementizer che (‘that’). Individual performance variability within the CI group is observed. Some CI children showed good competence in Italian and age-peer performance by producing passive relatives, which are largely attested in older children’s production. For other CI children, however, the tendency to produce sentences attested in young children’s production is evidence of the linguistic delay associated to hearing impairment. In this case, the performance of these CI children was comparable to that of younger NH children

    Three-sphere low-Reynolds-number swimmer with a passive elastic arm

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    One of the simplest model swimmers at low Reynolds number is the three-sphere swimmer by Najafi and Golestanian. It consists of three spheres connected by two rods which change their lengths periodically in non-reciprocal fashion. Here we investigate a variant of this model in which one rod is periodically actuated while the other is replaced by an elastic spring. We show that the competition between the elastic restoring force and the hydrodynamic drag produces a delay in the response of the passive elastic arm with respect to the active one. This leads to non-reciprocal shape changes and self-propulsion. After formulating the equations of motion, we study their solutions qualitatively and numerically. The leading-order term of the solution is computed analytically. We then address questions of optimization with respect to both actuation frequency and swimmer\u2019s geometry. Our results can provide valuable conceptual guidance in the engineering of robotic microswimmers

    Thermodynamics for spatially inhomogeneous magnetization and Young-Gibbs measures

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    We derive thermodynamic functionals for spatially inhomogeneous magnetization on a torus in the context of an Ising spin lattice model. We calculate the corresponding free energy and pressure (by applying an appropriate external field using a quadratic Kac potential) and show that they are related via a modified Legendre transform. The local properties of the infinite volume Gibbs measure, related to whether a macroscopic configuration is realized as a homogeneous state or as a mixture of pure states, are also studied by constructing the corresponding Young-Gibbs measures

    Syntactic intervention on relative clauses: two case studies on italian-speaking children with cochlear implants

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    This paper deals with the linguistic competence of two children with cochlear implants who showed weaknesses in the comprehension and production of relative clauses. These children were administered a protocol of language intervention based on formal linguistics and were explicitly taught verb argument structure, the Theta criterion, and syntactic movement used to derive relative clauses. Immediately after the intervention and some months later (2 and 5, respectively), the two children showed better comprehension and production of relative clauses. In addition, generalization effects were found. Non-treated structures and narrative skills (tested in one of the children) also improved, and improvement was maintained some months after the end of the treatment

    Il trattamento delle frasi relative in un bambino sordo portatore di impianto cocleare

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    Questo studio presenta un caso di trattamento delle frasi relative basato sull’insegnamento esplicito del movimento sintattico proposto ad un bambino di 8;5 anni affetto da ipoacusia neurosensoriale bilaterale con un impianto cocleare. Il trattamento descritto prende spunto da diversi studi sulla riabilitazione delle frasi derivate dal movimento sintattico condotte su pazienti afasici agrammatici e bambini con Disturbo Specifico del Linguaggio. I dati raccolti hanno mostrato, dopo la fine del trattamento, un miglioramento della performance del bambino nella produzione e nella comprensione delle frasi relative

    Check-list for the assessment of functional impairment in children with congenital aural atresia

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    Abstract OBJECTIVES: Congenital Aural Atresia (CAA) is a deformity of the external ear and it is commonly associated with malformations of middle and inner ear and, in some cases, with other facial deformities. Very few assessment measures exist for evaluating the functional impairment in children with CAA. Purpose of this study is to introduce and describe an assessment Checklist, (nominated FOS Checklist) that covers feeding abilities (F), oralmotor skills (O), communication/language development (S) in children with CAA. FOS wants to offer a range of assessment providing a profile of the child in comparison to hearing peers and it aims to make clinicians able to identify additional problems and areas of difficulties as well as specific abilities and skills. Secondary, we want to investigate the presence of correlations between disorders and side of CAA. METHODS: a new Checklist (FOS Checklist) was administered to 68 children with CAA. RESULTS: Feeding abilities are age-adequate in 94,3% of all patients. 54,4% of all patients are in need for further assessment of their oral-motor skills; delays in language development were found in 44,1% of cases. Orofacial development delays have been observed in 57.2% of subjects among the bilateral CAA group, in 53.9% among the right CAA group and in 53.4% among the left CAA group. Patients referred for further language evaluation were 42,9% in the bilateral CAA group, 33.3% in the right CAA group and 33.3% in the left CAA group. According to the \u3c72 analysis, referral for further assessment is independent from side of aural atresia. CONCLUSIONS: Subjects with bilateral CAA are more likely to be referred for further assessment, both for oral motor aspects and for speech perception and language development. However, there is not a significant statistical difference between the performances of children with bilateral or unilateral CAA. FOS Checklist is simple, reliable and time effective and can be used in everyday clinical practice. FOS enable clinicians to identify additional problems and areas of difficulties as well as specific abilities and skills; moreover, FOS allows to determine appropriate referrals and intervention strategies

    A syntactically based treatment of relative clauses: Three case studies of Italian children with cochlear implant

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    In this paper, we describe three case studies of a syntactic intervention given to three Italian-speaking children with cochlear implants (CIs) to improve the production and comprehension of relative clauses, and also their narrative skills. The methodology adopted for the syntactic intervention follows previous studies on aphasic patients with agrammatism and children with developmental language disorders (DLD). Indeed, these studies have shown that an explicit teaching of syntactic rules helps in the recovery and improvement of complex structures derived by syntactic movement. Results showed a general improvement in the production and comprehension of relative clauses, and generalization effects to untrained structures. Moreover, also narrative skills improved. Results were maintained several months after the end of syntactic intervention
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