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Junghyoe Yoon(윤정회),Eun Young Shin(신은영),Taegoo Chung(정태구) 한국언어학회 2015 언어 Vol.40 No.3
The purpose of this paper is to investigate the acquisition of preposition stranding (PS) and preposition pied-piping (PP) in relative clauses by Korean learners of English. These alternating constructions have been reported to be restricted by the level of formality and the syntactic dependency of a prepositional phrase on the predicate verb (Hoffman 2005; Ko 2009). The current study investigates whether the Korean EFL learners can recognize formality and dependency and appropriately use the alternating patterns compared to native English speakers. The findings of the present study showed that the learners" grammatical and pragmatic knowledge was not complete in that they failed to associate syntactic dependency with obligatory stranding or pied-piping constructions and their pragmatic sensitivity to formality was not always mapped onto a proper structure.
Preposition Stranding in the EFL Acquisition of Embedded Wh-questions
Junghyo Yoon 한국언어연구학회 2019 언어학연구 Vol.24 No.3
This study investigates the acquisition of preposition stranding in the syntactic contexts, such as elliptical wh-questions and non-elliptical ones, by Korean speakers learning English. An acceptability judgment task was conducted to examine the effects of clause types (non-elliptical vs. elliptical), preposition placement (preposition stranding vs. preposition pied-piping), and the V-P dependency (Dependent vs. Independent vs. Irrelevant). The results showed that preposition stranding was rejected in elliptical wh-questions while preposition fronting was favored over preposition stranding in non-elliptical wh-questions. Though the results were seemingly contradictory to the saliency hypothesis proposed by Bardovi-Harlig (1987), the study will provide an Optimality-theoretic analysis for the learners’ interlanguage grammars by adopting the constraint ranking proposed by Choi (2008).
Bare Fragment Answers as Elliptical Pseudoclefts
Junghyoe Yoon 한국생성문법학회 2014 생성문법연구 Vol.24 No.2
The paper attempts to provide a syntactic analysis of fragment answers without case markers in Korean. These bare fragment nominals frequently occur as answers corresponding to wh-words in question in informal daily conversations. Given the propositional semantics and observance of the Binding Theory, this paper argues that a bare fragment answer is derivable from a full-fledged sentence, not a canonical sentence correlate but a pseudocleft one. Bare fragment answers are successfully derivable from the proposed pseudocleft structure which has the topic phrase elided, the informal copula ya phonetically null, and the pre-copula position filled with the focused NP that turns out to be a bare FA.
Yoon, Junghyo,Yoon, Hee-Sook,Shin, Yoojin,Kim, Sanghyun,Ju, Youngjun,Kim, Jungbae,Chung, Seok 1637.934400 2017 Nanomedicine: Nanotechnology, Biology and Medicine Vol.13 No.5
<P><B>Abstract</B></P> <P>Electrospun and ethanol-dispersed polystyrene-poly(styrene-co-maleic anhydride) (PS-PSMA) nanofibers (NFs) were used as a platform for the selective capture and three-dimensional culture of EpCAM-positive cells in cell culture medium and whole blood. The NFs were treated with streptavidin to facilitate bond formation between the amino groups of streptavidin and the maleic anhydride groups of the NFs. A biotinylated anti-EpCAM monoclonal antibody (mAb) was attached to the streptavidin-conjugated NFs via the selective binding of streptavidin and biotin. Upon simple mixing and shaking with EpCAM-positive cancer cells in a wide concentration range from 10 to 1000,000 cells per 10mL, the mAb-attached NFs (mAb-NFs) captured the Ep-CAM positive cells in an efficiency of 59%-67% depending on initial cell concentrations, with minor mechanical capture of 14%-36%. Captured cells were directly cultured, forming cell aggregates, in the NF matrix, which ensures the cell proliferation and follow-up analysis. Furthermore, the capture capacity of mAb-NFs was assessed in the presence of whole blood and blood lysates, indicating cluster formation that captured target cells. It is anticipated that the antibody-attached NFs can be employed for the capture and analysis of very rare EpCAM positive circulating cancer cells.</P> <P><B>Graphical Abstract</B></P> <P>Polystyrene-poly(styrene-co-maleic anhydride) (PS-PSMA) electrospun nanofibers (NFs) conjugated by anti-EpCAM monoclonal antibody is presented as an integrative platform for target cell capture and culture. The developed NFs has inter-fiber space for efficient selective cell capturing in wide concentration range of cell containing suspensions. Captured cells could be directly cultured in the NFs matrix, to ensure a cell culture environment.</P> <P>[DISPLAY OMISSION]</P>
Properties of Syntactic Focus in Some Free Word Order Languages
Junghyoe Yoon 언어과학회 2018 언어과학연구 Vol.0 No.87
This study proposes that a certain type of focus involving exhaustive interpretation triggers syntactic movement and further examines its semantico-pragmatic factors across free word order languages such as Hungarian, Korean, Japanese, and Russian. Given that the focus item, which is interpreted as exhaustive, occupies dislocated positions in the four languages, the focus is claimed to bear a strong feature [+exhaustive] in numeration and to undergo syntactic movement in order to have the feature checked off before Spell-out. Under this claim, the syntactic movement is naturally linked with the focus interpretation, avoiding the violation of Inclusiveness Principle. Furthermore, the current study discusses parametric differences in realizing exhaustive focus from the syntactic perspective.
Microfluidic in-reservoir pre-concentration using a buffer drain technique.
Yoon, Junghyo,Cho, Youngkyu,Han, Sewoon,Lim, Chae Seung,Lee, Jeong Hoon,Chung, Seok Royal Society of Chemistry 2014 Lab on a chip Vol.14 No.15
<P>Pre-concentration methods are essential for detecting low concentrations of influenza virus in biological samples from patients. Here, we describe a new method for draining buffer from solution in the reservoir of a microfluidic device to increase the concentration of virus in the reservoir. Viruses were captured in the reservoir by an ion depletion barrier from connected ion selective microfluidic channels. 75 μl of buffer was successfully drained from a 100 μl sample, resulting in a 4-fold increase in influenza hemagglutinin concentration in the reservoir. The volume of the final concentrated sample was suitable for detection of influenza hemagglutinin by the enzyme-linked immunosorbent assay, demonstrating the usefulness of the developed platform for enhanced sensitivity of virus detection in a conventional analysis.</P>