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Piotr Tomaszewski

Interactions of Deaf Preschoolers: A Comparison of the Communicative Behaviors of Deaf Children of Deaf Parents and of Deaf Children of Hearing Parents

This exploratory study examined the communicative behaviors of deaf children of deaf parents (DCDP) and of hearing parents (DCHP) by observing child-child dyads in free-play situations. DCDP-DCDP pairs were compared with DCHP-DCHP pairs. Dyadic peer interactions were recorded on videotape. The finding indicated that there were no differences between DCDP and DCHP connected with communicative competence from the point of view of Polish Sign Language (PJM). However, statistically significant differences were found between the two groups with regard to some basic additional categories of communicative behaviors and of pragmatically non-manual behaviors. For example, DCDP were much more likely to form communicative utterances categorized in reference to absent objects, events, and persons. The results of this study suggest a change in the program of educating deaf children, taking into account the positive role of sign language in their psychological development.

Open access

Piotr Tomaszewski

Child visual discourse: The use of language, gestures, and vocalizations by deaf preschoolers1

This exploratory study examined the linguistic activity and conversational skills of deaf preschoolers by observing child-child dyads in free-play situations. Deaf child of deaf parents - deaf child of deaf parents (DCDP-DCDP) pairs were compared with deaf child of hearing parents - deaf child of hearing parents (DCHP-DCHP) pairs. Children from the two groups were videotaped during dyadic peer interactions in a naturalistic play situation. The findings indicated that deaf children were able to engage in successful communicative interaction. However, statistically significant differences were found between the two groups of deaf preschoolers with regard to some categories of communicative behaviors from the point of view of sign and spoken languages (Polish Sign Language and Polish). For example, DCHP were found to be less actively than DCDP through using speech. The results of this study suggest that intervention efforts should be focused on improving the language learning environment by facilitating signing by the parents and increasing their skills in visual-gestural strategies.

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Piotr Dzikowski and Marek Tomaszewski

Abstract

The main goal of this study is to identify the impact of firm size and its ownership on innovation cooperation in medium-high and high technology sectors in Poland between 2008-2013. The most open for innovation cooperation are large and foreign enterprises which mainly cooperate with foreign and national R&D units and universities.

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Agata Tarwacka-Odolczyk, Piotr Tomaszewski, Agnieszka Szymańska and Barbara Bokus

Abstract

This paper discusses the communicative competence of deaf children. It illustrates the process in which such children build narrative texts in interaction with a deaf teacher, and presents the diversity of this process due to the shared vs. non-shared perception of a picture - the source of the topic. Detailed analyses focus on the formal and semantic aspect of the stories, including the length of the text in sign language, the content selected, information categories, and types of answers to the teacher’s questions. This text is our contribution in memory of Professor Grace Wales Shugar, whose idea of dual agentivity of child-adult interaction inspired the research presented here.

Open access

Piotr Tomaszewski, Piotr Krzysztofiak and Ewelina Moroń

Abstract

The aim of this paper is to show shifts in the language development of deaf and hard of hearing children over the last 30 years. The paper presents an overview of Western and Polish studies on education and language development in deaf children in terms of psycholinguistics. Perceptions of the perceptual and cognitive capabilities of such children must be subject to revision and continual methodological reflection due to rapidly changing variables, such as technological progress, social and cultural conditions of primary socialization and the aims of deaf education. Now that an increasing number of deaf children undergo cochlear implantation, and digital hearing aids can provide 70-75 dB of gain, thus enabling the children to spontaneously develop speech, many of them function in a bimodal environment of the sign and the speech. However, they perform at different levels of educational and developmental success. This paper elucidates the issues of language flexibility in and heterogenization of children using hearing aids or implants on a daily basis.

Open access

Grzegorz Tomaszewski, Piotr Jankowski-Mihułowicz, Mariusz Węglarski and Wojciech Lichoń

Abstract

The results of technological investigations in the scope of inkjet-printed flexible RFID antennas dedicated to UHF transponders and also problems with the application of nanomaterials are reported in this paper. The design of the antenna electrical circuit and the parameters of the inkjet printing process were elaborated on the basis of the numerical model prepared in the Mentor Graphics HyperLynx 3D EM software. The project evaluation was performed by measuring electrical parameters of the structures printed with silver-based conductive inks. The obtained results confirm coincidence between the model and its implementation in the inkjet printing technology. Finally, the prepared antenna has been applied in an RFID transponder of UHF band and the functional tests are also reported in this paper.