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박현준(Hyunjun Park) 현대문법학회 2023 현대문법연구 Vol.117 No.-
The purpose of this paper is to analyze the distribution and characteristics of null arguments in Korean Sign Language (KSL). Languages such as Spanish and Italian, which have a rich system of overt morphological agreement, allow subject-drop but not object-drop. For this reason, it has been said that the null arguments are licensed by rich verbal morphology. On the other hand, languages such as Korean and Chinese do not have a rich agreement system like Spanish and Italian. Thus, the verbs are used with the same ending regardless of person, number, and gender features. In this paper, we show that KSL is different from those languages like Korean and Chinese in that arguments can be dropped with both agreeing and non-agreeing verbs. In some contexts, in addition, null arguments of non-agreeing verbs are not allowed, whereas null arguments of agreeing verbs are totally acceptable. Therefore, to solve these problems, in this paper, we suggest hybrid analysis in licensing null arguments in KSL.
박현준(Hyunjun Park),이민수(Minsu Lee),조재욱(Jaewook Jo),김병규(Byungkyu Kim) 한국항공우주학회 2010 韓國航空宇宙學會誌 Vol.38 No.4
본 논문에서는 나사잭의 메커니즘을 이용한 인공위성의 비폭발식 분리장치를 설계 및 제작하였다. 분리장치의 구동기로는 정격토크가 1.7kgfㆍ㎝의 성능을 가진 회전형 피에조모터를 사용하여 분리장치의 안정적인 작동이 이뤄지도록 하였다. 또한 인공위성의 분리장치로의 성능을 검증하기 위하여 반응속도 실험, 준정적 하중실험, 충격실험을 수행하였다. 실험을 수행한 결과, 반응속도는 약 1.172초로 측정되었고, 45kgf의 하중에서도 안정적으로 견딜 수 있음을 확인하였다. 최대 충격 가속도는 18G가 측정이 되었는데 이것은 폭발식 분리장치에 비해 매우 작은 값이다. 우리는 이러한 실험을 통하여 제안한 분리장치의 신뢰성을 확인하였으며, 인공위성 분리장치로써의 가능성을 제시하였다. The non-explosive release device using jack mechanism is designed and fabricated for the small satellite. As a triggering actuator for the release device, a piezo rotory motor with torque of more than 1.7 kgfㆍ㎝ is employed to guarantee stable activation. For performance tests of separation device, we conducted release time test, preload test and shock test. The device was operated within 1.172sec and activated stably under load of 45kgf. Maximum shock was measured as 18G that is much less than the pyro-separation device produces. We confirmed the possibility as a satellite separation device through above presented tests.
다리를 이용한 클램핑 방식의 자벌레 이동방식 대장내시경로봇
박현준(Park Hyunjun),임상혁(Leem Sanghyuck),김병규(Kim Byungkyu) 대한기계학회 2010 大韓機械學會論文集A Vol.34 No.6
본 논문은 자벌레 이동장치의 전, 후반부에 각각 여섯 개의 다리로 이루어진 고정장치를 사용하여 인체내에서 원활하게 이동할 수 있는 대장내시경로봇을 제안하였다. 또한, 관탐사용 이동장치로 기 개발된 하나의 공압선을 이용한 자벌레 이동방식을 적용하여 공압선과 이동환경 사이의 마찰을 줄여주어 이동 성능을 높여주었다. 이동 성능을 평가하기 위하여 로봇을 직경 15㎜, 길이 110~250㎜ 의 크기로 설계 및 제작 후, 아크릴 관과 죽은 돼지의 창자에서 이동실험을 수행하였다. 실험을 통하여 로봇은 곡관의 반경이 25㎜ 이상이면 이동이 가능함을 알 수 있었고, 직관의 경우 수평관에서 33㎜/s, 수직관에서 12.1㎜/s 의 이동 속도를 보여주었다. 결론적으로 하나의 공압선을 이용하여 구동되고 양단에 다리로 구성된 고정장치를 장착한 제안된 로봇은 대장내시경 로봇으로써 신뢰성이 높은 이동성능을 보여주었다. For the reliable clamping of a robotic colonoscope inside the colon, we propose a clamping module consisting of six legs at the front and a trigger at the rear. In addition, a pneumatic-line based locomotive mechanism, which was developed previously for in-pipe inspection, is adopted to reduce the friction force between the pneumatic lines and the locomotion environment. In order to evaluate locomotion performance, a robot with a diameter of 15 ㎜ and a length of 110?250 ㎜ is used. Based on control signal from LabVIEW, it is tested in acrylic pipe and pig’s colon. The proposed robot is able to move in the curved path which has a radius of over 25 ㎜. The speed of the robot is 33 ㎜/s in a straight path and 12.1 ㎜/s on a vertical path. The proposed robot, which has one pneumatic line and two clamping modules, conclusively shows reliable locomotion performance under in vitro condition.
Social Media Influencer (SMI) Impact on Millennials
Hyunjun Park(박현준),Kyungmi Kim(김경미) 융복합지식학회 2018 융복합지식학회논문지 Vol.6 No.1
In this paper, we investigate how the company The Flying House Media have successfully strategically innovated by utilizing social media influencers (SMI) to have an impact on the new millennial generation. The cohort of millennial generations specific characteristics are based on discovering creative outlet, desire instant, and direct feedback. Therefore, this research has discovered that a new communication method of video content through social media from YouTube, Facebook, Twitter and more with an honest and meaningful story using SMIs has influenced the consumers successfully to purchase by exploring and examining the company The Flying House Media.
이중 팽창기를 적용한 유기랭킨사이클 시스템의 성능특성 연구
박현준(Hyunjun Park),윤은구(Eunkoo Yun),윤상열(Sang Youl Yoon),김경천(Kyung Chun Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
This study targets to estimate the performance of an organic Rankine cycle (ORC) power generation system using dual expanders by simulation and experiment. The ORC system is composed of two scroll expanders installed in parallel, a hydraulic diaphragm type pump to pressurize the working fluid, two plate heat exchangers for the evaporator and condenser. The two scroll expanders were converted from two oil-free air scroll compressors with same specifications, and were tested in the ORC loop with R245fa. The heat source temperature was controlled up to 150 °C by the 150 kW-class electric water-heater. In order to evaluate the static performance of the system, efficiencies and shaft powers for both single and dual operation mode were carried out. The maximum isentropic efficiency of each expander was measured about 70 %, and the shaft power was reached to about 3 kW at the turbine inlet temperature of 140 °C. Moreover, the performance characteristics of the dual parallel expanders ORC system with regards to various heat source conditions will be addressed.