Kazimierz Wielki University in Bydgoszcz

About: Kazimierz Wielki University in Bydgoszcz is a education organization based out in Bydgoszcz, Poland. It is known for research contribution in the topics: Population & Luminescence. The organization has 1109 authors who have published 2923 publications receiving 19548 citations. The organization is also known as: Casimir the Great University & Uniwersytet Kazimierza Wielkiego w Bydgoszczy.

Short‐ and Long‐Term Effects of Rote Rehearsal on ESL Learners' Processing of L2 Collocations

Abstract: Worldwide there is thought to be around 750 million people who speak English as a foreign language (Crystal, 2003, p. 69). For these speakers the difference between make a picture and take a picture may seem arbitrary. However, use of the former is likely to influence how their second language (L2) performance is perceived (Boers, Eyckmans, Kappel, Stengers, & Demecheleer, 2006). Consequently, L2 speakers' use of collocations (“fixed, identifiable, non-idiomatic phrases and constructions”; Benson, Benson, & Ilson, 1997, p. xv) and other formulaic sequences is an important aspect of L2 competence (Wray, 2002). Several factors appear to influence the acquisition and use of L2 collocations. One of them is L1–L2 collocational congruency. Research has demonstrated that word-for-word translation equivalents (congruent collocations) are processed more efficiently than incongruent collocations (Wolter & Gyllstad, 2011; Yamashita & Jiang, 2010). Moreover, research has demonstrated that collocational frequency, and the frequency of formulaic sequences more generally, influences processing, with more frequent combinations being processed more quickly (Siyanova-Chanturia, Conklin, & van Heuven, 2011; Wolter & Gyllstad, 2013). Researchers have also explored the role of different L2 input conditions on the processing of collocations. Sonbul and Schmitt (2013) compared the effects of three treatments (enriched, enhanced, and decontextualized input) on the collocational competence of learners of English as a second language (ESL). For explicit knowledge, they observed an improvement in both receptive and productive tests for all treatment conditions, but for implicit knowledge no gains were found. Peters (2012) examined L2-German learners' acquisition of words and formulaic sequences as dependent on an instructional method (directing learners' attention through instructions) and input enhancement (bolding and underlining). In a form recall test, input enhancement led to gains in learners' knowledge, whereas the instructional method did not seem to affect their results. The present study brings together a number of questions that have been prominent in the literature by examining the short- and long-term effects of two different input conditions on ESL learners' processing of L2 collocations, as well as exploring the influence of frequency and collocational congruency.

Observational test of the CH cation oscillator strengths

Abstract: We revise measurements of the positions and oscillator strengths using spectral features in the CH + A - X system, and by using high-resolution, echelle spectra of 36 stars and assuming that its wavelength and oscillator strength as given in the literature for the (0,0) transition, i.e. 4232.548 A and 0.00545 respectively, are correct. The recommended oscillator strengths of the lines at 3957.689, 3745.308, 3579.024, and 3447.077 A are found to be (in units of 10 -5 ) 342, 172, 75, and 40, respectively. The estimated column densities of the CH cation toward the observed targets are also presented.

Laser additive manufacturing of Si/ZrO<sub>2</sub> tunable crystalline phase 3D nanostructures

Abstract: The current study is directed to the rapidly developing field of inorganic material 3D object production at nano-/micro scale. The fabrication method includes laser lithography of hybrid organic-inorganic materials with subsequent heat treatment leading to a variety of crystalline phases in 3D structures. In this work, it was examined a series of organometallic polymer precursors with different silicon (Si) and zirconium (Zr) molar ratios, ranging from 9:1 to 5:5, prepared via sol-gel method. All mixtures were examined for perspective to be used in 3D laser manufacturing by fabricating nano- and micro-feature sized structures. Their spatial downscaling and surface morphology were evaluated depending on chemical composition and crystallographic phase. The appearance of a crystalline phase was proven using single-crystal X-ray diffraction analysis, which revealed a lower crystallization temperature for microstructures compared to bulk materials. Fabricated 3D objects retained a complex geometry without any distortion after heat treatment up to 1400 °C. Under the proper conditions, a wide variety of crystalline phases as well as zircon (ZrSiO₄ - a highly stable material) can be observed. In addition, the highest new record of achieved resolution below 60 nm has been reached. The proposed preparation protocol can be used to manufacture micro/nano-devices with high precision and resistance to high temperature and aggressive environment.