AMESim를 이용한 유압 굴삭기용 Main Control Valve의 해석에 관한 연구

임태형,최종환,양순용,이병룡,안경관 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

The hydraulic excavator has been a popular research object for automation because of its multi-workings and economic efficiency. When it works crane tasks, most of disasters happen. The objective of this paper is to design each components and to construct boom, arm, bucket circuit. These models modeled with AMESim show us change of variables and behavior of excavator. Simulation model will be used for simulator of excavator.

AMESim, CarSim을 이용한 SIL(Software In the Loop) 및 Real Tims Simulation

임태형 유공압건설기계학회 2009 유공압건설기계학회 학술대회논문집 Vol.2009 No.11

회원작품 - 지산돌집

임태형,Lim, Tae Hyung 대한건축사협회 2023 建築士 Vol.656 No.-

회원작품 - 백운동주택(백소헌)

임태형,Lim, Taehyung 대한건축사협회 2019 建築士 Vol.598 No.-

굴삭기용 Hardware In the Loop System(HILS) 개발

임태형,조현철,안태규,양순용,이홍선 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

This paper deal with basic concept of Hardware In the Loop System(HILS) for hydraulic excavator. Hydraulic excavator has many nonlinearities because of P-Q diagram, dead zone and saturation of valve, single acting cylinder, heavy manipulator. So, actual test is needed when new component or control algorithm is developed but many restrictions exist. Hydraulic circuit of excavator is too complex to model mathematically but dynamic equation of manipulator has made good progress in previous studies. Basic concept of HILS and AMESim model of hydraulic components is contained in this paper.

진로교육의 쟁점, 발전방향, 역할에 관한 질적 연구 : 중등 진로진학상담교사의 의견을 중심으로

임태형,류지헌 전남대학교 교육문제연구소 2021 New Horizons of Educational Research Vol.1 No.1

우리나라 중등 진로교육은 201년 진로진학상담교사 중등교원 자격 신설과 2015년「진로교육법」제정을 거쳐 약 10년의 역사를 갖고 있다. 그동안 중등교육 현장의 진로진학상담교사들은 우리나라 진로교육에 대한 다양한 문제점을 지적하고 개선방향에 대해 목소리를 높여왔다. 이 연구는 현재 진로교육의 문제점, 발전방향, 그리고 구성원의 역할에 대해서 종합적으로 탐색하고자 하였다. 이를 위해 지역의 중등 진로교육전문가 16인을 대상으로 이메일을 통한 의견을 수집하였다. 연구진은 질적분석 방법인 주제분석을 통해 문제인식, 발전방향,역할도출이라는 범주에 따라 다양한 주제들을 분석 및 정리하였다. 문제인식으로는 진로교육의 목표, 진로교사, 학교 및 사회제도, 학부모, 학생 본인의 다양한 문제들이 발견되었다. 교육내용의 발전방향으로는 융복합역량, 진로유연성, 인성, 기업가정신을 제시하였고, 교육방법의 발전방향으로는 에듀테크 활용 및 AR/VR활용 교육을 언급하였다. 역할도출 측면에서는 학교현장과 진로교사, 대학 및 지자체로 구분하여 다양한 역할들을 제시하였다. 이 연구는 지역발전과 지역 학생들의 진로교육을 위해 학교-대학-지자체 연계 발전방향을 모색했다는 것에 의의가 있다.

MPLS 네트워크에서 PMIP 기반의 이동성 지원 방안

임태형,이성근,박진우,Lim, Tae-Hyong,Lee, Sung-Kuen,Park, Jin-Woo 한국전기전자학회 2009 전기전자학회논문지 Vol.13 No.4

IETF에서 제안된 네트워크 기반의 이동성 지원 방식인 Proxy Mobile IP는 이동 단말이 아닌 LMA(Local Mobility Anchor)와 MAG(Mobile Access Gateway)등의 네트워크 요소가 이동성 지원 기능을 수행하기 때문에 단말 기반의 이동성 지원 방식인 MIP의 문제점을 해결하고 MIP보다 향상된 핸드오버 성능을 보인다. 그러나 여전히 PMIP은 MIP와 마찬가지로 IP의 Best Effort Service를 기반으로 하기 때문에 다양한 실시간 멀티미디어 서비스에 대한 QoS를 보장하지 못한다. 이러한 문제를 해결하기 위해 본 논문에서는 MPLS 네트워크에서 PMIP기반의 이동성 지원 기술을 적용하여 이동성과 QoS의 보장을 모두 제공하는 네트워크 구조 및 핸드오버 절차를 제안한다. Proxy Mobile IP in IETF is a network-based mobility management scheme to solve the problem of host-based mobility management scheme, Mobile IP. PMIP shows the better performance in the aspect of mobility, but PMIP, as a legacy of Mobile IP based on "best effort service", lacks of consideration of QoS. In this thesis, a novel mobility support scheme is proposed for mobility and QoS support based on PMIP in MPLS networks.

Pentacam으로 측정한 정상 한국인에서 각막 전후면의 구면수차

임태형,이종락,최기용,조범진,Tae Hyung Lim,MD,Jong Rak Lee,MD,Kee Yong Choi,MD,Beom Jin Cho,MD 대한안과학회 2010 대한안과학회지 Vol.51 No.6

Purpose: To evaluate the spherical aberrations of the anterior and posterior surfaces of normal corneas using Pentacam in a Korean sample population and determine their ranges and changes with age. Methods: We used Pentacam (Oculus Inc.,Germany) to measure the anterior and posterior corneal spherical aberrations of 240 eyes in 240 patients with normal corneas who visited our clinic. The means and ranges of spherical aberrations and their changes with age were determined. We examined both eyes of 90 patients to confirm the inter-ocular symmetry in spherical aberration. Results: The mean age of the 240 patients (M:F=103:137) was 49.8 years (range: 20-79), and the mean spherical aberrations of the anterior and posterior surfaces of the cornea were 0.230±0.078 μm, and -0.04±0.021 μm, respectively. The mean total corneal spherical aberration was 0.19±0.087 μm. There were no differences between males and females, and inter-ocular symmetry was observed in all tested patients. There was a tendency for the values of anterior, posterior and total corneal spherical aberration to increase with age. Ranges of spherical aberrations were from -0.177 μm to 0.423 μm in the anterior cornea, from -0.083 μm to 0.034 μm in the posterior cornea, and from -0.238 μm to 0.410 μm in the total cornea. Conclusions: In a Korean population, the mean total corneal spherical aberration was 0.19 μm, which was shown to increase with age. Some patients were shown to have an extreme value. Based on these results, a preoperative analysis for corneal spherical aberration may be helpful when selecting aspheric intraocular lenses. J Korean Ophthalmol Soc 2010;51(6):816-821

메타버스 학습환경에서 동료아바타 상호작용과 스크린의 시야각이 가상실재감 및 정서적 학습경험에 미치는 영향

임태형,탁연주,류지헌 한국교육방법학회 2022 교육방법연구 Vol.34 No.4

The purpose of this study is to investigate the interaction of avatars in the metaverse space and the effect of immersive screens on learners' virtual reality and emotional state. Social interaction by avatars can directly affect the use experience of the learning environment. In other words, if it is a learning environment to which social interaction is applied, the level of perception or emotional intervention in a metaverse-based virtual space may vary. In addition, it was intended to confirm how much deeper learners interact by making the level of immersion in the spatial structure to implement the metaverse high. Whether the independent variable in this study interacts with fellow avatars (yes vs. None) and tried to measure what changes occur according to the level of immersion of the screen as variables in the group. The dependent variables of this study were virtual reality and emotional analysis. Virtual reality refers to the user's level of perception of virtual space, and here, 1) spatial reality, 2) immersion, and 3) reality sub-gain were measured. In addition, the emotional analysis attempted to analyze the difference between 1) emotional participation and 2) emotional participation. A total of 42 subjects participated in the study, and the distinction between the experimental group and the control group was randomly made. Among the independent variables, the interaction with fellow avatars was set as a factor between subjects, and the immersive screen level was set as an in-subject factor to perform a two-way multivariate analysis according to repetitive treatment. According to the results of the study, it was found that the provision of social interaction did not directly affect the learner's virtual reality. However, it was found that emotional participation or emotional value had a positive effect.

대학 학습자들의 메타버스 기반 수업 이용의도에 대한 요인 예측: 하이브리드 SEM-ANN 접근법

임태형,정유선,류지헌 한국교육공학회 2023 교육공학연구 Vol.39 No.3

This study explored the factors influencing the intention to use the metaverse in university courses. To analyze their predictive power, we employed a hybrid approach combining partial least squares structural equation modeling (PLS-SEM) and artificial neural networks (ANN). The 238 university student participants, all of whom had taken metaverse-based online classes, completed a survey based on the extended technology acceptance model (E-TAM) to assess their intention to use the metaverse. The results revealed that the key factors predicting the intention to use the metaverse were attitude, perceived usefulness, and social influence. This study has two practical implications: first, it introduces a hybrid SEM-ANN analysis method for identifying predictive factors; second, it identifies the key factors to be considered when planning to use the metaverse for university courses.