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순차적으로 제공된 전신 진동 자극에 대한 정보 전송량 추정
박재준(Jaejun Park),김준우(Junwoo Kim),한상윤(Sangyoon Han),박채용(Chaeyong Park),박준석(Junseok Park),최승문(Seungmoon Choi) 한국HCI학회 2023 한국HCI학회 학술대회 Vol.2023 No.2
본 연구는 10 개의 신체 부위에 순차적으로 제공된 진동에 대한 정보 전송량(Information Transfer)을 추정하고, 적은 수의 실험 데이터로 정보 전송량을 추정하기 위한 시뮬레이션 방법을 제시한다. 순차적 진동 자극의 정보 전송량을 추정하기 위해 절대 식별 실험(Absolute Identification Experiment)을 진행했으며, 순차적 진동 자극의 개수가 1 개, 2 개, 3 개 일 때의 정보 전송량은 차례로 3.32 bits, 6.55 bits,9.36 bits 였다. 순차적으로 제공된 진동 자극이 3 개인 경우 정확한 정보 전송량 추정을 위해 권장되는 시행 수에 비해 실험 데이터가 제한적이었기 때문에 시뮬레이션 방법을 사용하여 정확한 정보 전송량을 재차 추정하였다. 자극에 대한 사용자의 응답을 예측하는 확률 모델을 구성하고 이를 기반으로 사용자 응답 데이터를 시뮬레이션하여 정보 전송량을 추정하였으며, 추정된 정보 전송량의 범위는 8.46-8.80 bits, 평균 8.59 bits 였다. 본 논문에서 추정한 정보 전송량은 전신 진동 자극의 설계에 있어 지침으로 사용될 수 있을 것이며, 확률 모델을 통한 시뮬레이션 방법론은 자극의 종류와 관계없이 적은 수의 실험 데이터로 보다 확실한 정보 전송량을 추정하는 방법으로 사용될 수 있을 것이다.
Doing without Edge Features: A Labeling Approach
Jaejun Kim,Myung-Kwan Park 한국언어학회 2021 언어 Vol.46 No.3
This paper deduces the peculiar aspects of adjunct clause control and parasitic gap formation from the Labeling Algorithm (Chomsky, 2013), coupled with chain composition (Chomsky, 1986), without resorting to edge features. In English and Brazilian Portuguese, adjunct clauses show language-particular behaviors concerning the control of their empty subjects, depending on whether the movement of a matrix wh-object takes place or not. In addition, parasitic gap constructions display well-known cross-clausal movement or merging of the two independent chains in the matrix and the adjunct clauses. This paper argues that when the matrix clause and the adjunct clause vPs are merged, they must be in a parallel state in terms of labeling before feeding chain composition between the two distinct chains in the vPs. Specifically, provided that Merge generates the labeling-wise parallel {unlabeled phrase, unlabeled phrase} or {labeled phrase, labeled phrase} configuration at one point of derivation, the two distinct chains involved within them can form a unified single chain. By establishing a precondition for the formation of chain composition in this way, the derivational steps of the movement involved in adjunct clause empty subject control and parasitic gap constructions can be properly constrained.
A 2.3-7GHz CMOS High Gain LNA Using CS-CS Cascode with Coupling C
PARK, Hangue,LEE, Sungho,LEE, Jaejun,NAM, Sangwook The Institute of Electronics, Information and Comm 2009 IEICE transactions on electronics Vol.92 No.8
<P>A fully integrated CMOS wideband Low Noise Amplifier (LNA) operating over 2.3-7GHz is designed and fabricated using a 0.18µm CMOS process. The proposed structure is a common source-common source (CS-CS) cascode amplifier with a coupling capacitor. It realizes both low voltage drop at load resistor (<I>R<SUB>load</SUB></I>) and high gain over 2.3-7GHz with simultaneous noise and input matching and low power consumption. This paper presents the proposed design technique of a wideband LNA, and verifies its performance by simulation and measurement. This wideband LNA achieves an average gain (S21) of 16.5 (dB), an input return loss (S11) less than -8dB, a noise figure (NF) of 3.4-6.7dB, and a third order input interception point (IIP3) of -7.5-3dBm at 2.3-7GHz with power consumption of 10.8mW under 1.8V VDD.</P>
Responding to Negative Utterances : An Ellipsis Account
Park, Myung-Kwan,Kim, Austin Jaejun 한국중앙영어영문학회 2018 영어영문학연구 Vol.60 No.4
This paper investigates the syntax of polarity particles ‘yes’ and ‘no’ as responses to negative utterances such as negative questions and assertions. It has been noted by Krifka (2013), among others, that negative utterances can be responded to in four different ways, such that ‘yes’ and ‘no’ are both part of positive or negative responses. We argue that ‘yes’ and ‘no’ in negative responses to negative utterances are derived from feature checking/valuation between the polarity particle and the TP-internal Pol head, followed by TP ellipsis. By contrast, ‘yes’ and ‘no’ in positive responses to negative utterances are immediately followed by the empty TP, which recruits its antecedent semantically from the propositions denoted by the preceding negative question or assertion. It is shown that the line of our analysis musters empirical support from Goodhue and Wagner’s (2018) recent analysis of the interaction between polarity particles and intonation, in that unlike the unmarked cases that employ syntactic feature checking/valuation, the marked cases of polarity particles that rely on semantic binding and composition are bound to bear the peculiar intonation of contradiction contour.
Band gap sensitivity of bromine adsorption at carbon nanotubes
Park, Noejung,Miyamoto, Yoshiyuki,Lee, Kyuho,Ih Choi, Wooni,Ihm, Jisoon,Yu, Jaejun,Han, Seungwu Elsevier 2005 Chemical physics letters Vol.403 No.1
<P><B>Abstract</B></P><P>We report results of our first-principles investigation on the energetics and electronic structures of bromine-adsorbed carbon nanotubes. While the bromine molecule binds preferentially to the outer wall of metallic nanotubes, the binding energy of adsorbed atomic bromines are found to depend on the radius as well as the energy gap. A recent experiment on the nanotube separation using bromines is discussed based on our computational data. The formation of strong C–Br chemical bonds at the zigzag edge of graphite demonstrates a close relationship between the density of states at the Fermi level and the binding strength.</P>
A 0.1-1GHz CMOS Variable Gain Amplifier Using Wideband Negative Capacitance
PARK, Hangue,LEE, Sungho,LEE, Jaejun,NAM, Sangwook The Institute of Electronics, Information and Comm 2009 IEICE transactions on electronics Vol.92 No.10
<P>This Paper presents the design of a wideband variable gain amplifier (VGA) using 0.18µm standard CMOS technology. The proposed VGA realizes wideband flat gain using wideband flat negative capacitance. It achieves a 3dB gain bandwidth of 1GHz with a maximum gain of 23dB. Also, it shows P1dB of -33 to -6dBm over the gain range of -28 to 23dB. The overall current consumption is 5.5mA under a 1.5V supply.</P>