복합 재료 폭파 방화벽 실험 연구

양현정,강영종,Yang, Hyun-jung,Kang, Young-Jong 한국복합신소재구조학회 2010 복합신소재구조학회논문집 Vol.1 No.4

This study investigates how to apply composite material to the blast loading protection devices, mainly used for military purpose. Traditionally, earth-filled blast walls have been used for protecting important parts of military facilities and personnels. However these types of blast walls show difficulty in fabrication and portability because of their nature of heavy weight. Composite materials are known to have relatively higher specific stiffness and strength than any other metallic and earth-filled materials such as sand and gravels. Totally 4 times of TNT blast experiments were performed on the carbon/epoxy blast walls. After the end of each test, the improvement of blast wall was implemented to the structure. The test results show that the use of composite material in the blast protecting area is the one of very effective and reliable alternatives.

국내 포털 기사자료 분석을 통한 산업기술유출 사례와 산업보안 강화 방안 연구

양현정,이창무,Yang, Hyun Jung,Lee, Chang Moo 한국융합보안학회 2017 융합보안 논문지 Vol.17 No.2

지식정보화 사회가 도래하면서 많은 국내기업이 핵심기술 및 지식재산 확보를 위해 기술개발에 많은 투자를 하고 있다. 하지만 적극적인 기술개발 투자에 비해 기업이 보유한 기술을 보호하기 위한 보안투자가 미흡한 결과 다수의 기업 및 연구소에서 기술 유출 사건이 급격하게 증가하고 있다. 이러한 기술유출의 증가는 단순히 기업에 피해뿐만 아니라 국가 경제에도 직 간접적인 악영향을 미치고 있는 실정이다. 산업기술유출은 주로 전 현직 직원에 의해 이뤄지고 있지만, 이를 중점적으로 비교 분석한 연구는 많지 않다. 따라서 본 연구는 2014년부터 2016년 동안 발생한 산업기술유출 사례를 기술유출 피해기업의 유형, 회사 내 기술유출 주체자의 직위, 기술유출의 공범여부, 기술유출에 사용된 도구, 기술유출의 동기로 유형화하여 산업기술유출 실태를 파악하였다. 이러한 유형별 분석을 통해 산업기술유출의 패턴과 특징에 대해 조사하고 산업기술유출 방지를 위한 산업보안 증진방안을 모색하였다. In the knowledge-information society, many domestic companies put lots of investment in technical development to possess core technologies and intellectual property. However, in the results of passive investment in security to protect their technologies compared to the active investment in technical development, the technology leaks from many companies and research institutes are rapidly increasing. Such increase of technology leaks not only causes damage to companies, but also has harmful effects on national economy directly and indirectly. Even though it has been perceived that a lot of industrial technology leak crimes are committed by former/current workers of small and medium-sized businesses, it is hard to find researches that mainly compare and analyze them. Therefore, this study aimed to understand the actual status of industrial technology leaks by analyzing cases of industrial technology leaks from 2014 to 2016 based on the type of victimized companies, corporate internal leakers' positions, matter of complicity, tools used for technology leaks, and motivation for technology leaks. Through the analysis in each type, the patterns and characteristics of industrial technology leaks were researched, and also the exploratory research on industrial security for the prevention of industrial technology leaks was conducted.

진로진학상담 수업이 예비교사들의 진로효능감과 진로진학지도역량 증진에 미치는 영향

양현정(Yang Hyun jung),박은혜(Park Eun Hye),양혁(Yaung Huk),이상민(Lee Sang min) 고려대학교 교육문제연구소 2016 敎育問題硏究 Vol.29 No.4

본 연구의 목적은 사범대학의 학생들을 대상으로 진로진학상담 교과목을 개발하고, 이를 실제 교육과정에 적용ㆍ운영하여 예비교사들에게 미치는 효과를 검증하는 데 있다. 교과목의 개발은 유현실과 김창대(2011), 박용호(2011)가 제안한 진로진학상담교사의 역량을 고려하여 이론과 실제를 포괄하도록 구성하였으며, 초안 작성 후 전문가 검토를 통해 프로그램을 수정ㆍ보완 하였다. 연구대상은 서울 소재 K대학교 재학 중인 학부생 62명으로, 실험집단 31명, 통제집단 31명이었다. 개발된 교과목은 한 학기(16주)동안 진행되었으며, 수업 2주차와 15주차에 각각 사전검사와 사후검사를 실시하였다. 그 결과는 다음과 같다. 첫째, 진로진학상담 교과목을 수강한 학생들은 수강하지 않은 학생들에 비해 진로결정자기효능감의 5가지 하위요인 중 ‘계획수립’ 하위요인을 제외한 나머지 하위요인에서 통계적으로 유의미하게 상승한 결과를 나타냈다. 둘째, 진로진학상담 수업의 수강생들은 진로지도효능감 및 진로진학상담교사역량이 통계적으로 유의미하게 상승한 것으로 나타났다. 본 연구는 예비교사의 진로지도 및 상담 전문가로서의 역량을 증진시키는 데에 진로진학상담 교과목의 개발과 운영의 활용가능성을 시사하는 데 의의가 있다. The purpose of study is to develop the course of career guidance and counseling and to verify the effects of the course on pre-service teachers. The course was developed based on the career guidance teacher s competencies, which are proposed by Yoo & Kim(2011), Park(2011). The course also covered various career counseling theories and practice. The researchers have continued to review and revise the contents of the course through the experts’ consultation. To evaluate the effects of the course, two groups of undergraduate students were compared, an experimental group and a control group, each consisting of 31 subjects. The experimental group was provided with the 16-weeks career course and was tested before the 2-week class and after the 15-week class of the course with career decision-making self-efficacy, career guidance self-efficacy, and career guidance teacher s competencies. The control group did not receive the career course but was tested at the same interval. Results demonstrated that students in the experimental group improved significantly more than those in the control group on the career decision-making self-efficacy, career guidance self-efficacy, and career guidance teacher s competencies. This suggests that the course of career guidance and counseling was effective in enhancing competencies in pre-service teachers.

조명에너지 절약을 위한 근거기반 스마트 홈 서비스 프로세스

양현정(Yang, Hyeon-Jeong),이현수(Lee, Hyun-Soo) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.8

This study proposed ideas for saving energy used for lighting devices by utilizing an individual"s record of experiences. This paper regards lifestyles as a key element affecting the lighting energy waste. The core idea of this study is to provide a customized one-to-one lighting device control service using life-log data. The results are as follows. First, the collection method and the information structure of the ‘life-log data’ are defined. Life-log data recorded regarding to "5W 1H" information structure. Second, by utilizing the life-log data as an evidence, it has developed smart home service process; ‘situation awareness’, ‘service determined’, ‘similarity check’, ‘data filtering’, ‘decision making’ and ‘lighting control’. Life-log data analysis methods took into account the CBR and RBR. Third, service journey map illustrated the process of data scheduling as case of life-log data in 24 hours in response to the demands on situational service and chance of energy savings. The significance of this study is in improving the satisfaction of residents and providing appropriate services in circumstances by individually controlling all lighting devices installed inside housing.

스마트 월을 활용한 세대내부 음환경 제어 서비스 개발 방법론 - 재택근무 지원 가변공간을 중심으로 -

양현정(Yang, Hyeon-Jeong),김수암(Kim, Soo-Am),정준수(Chung, Joon-Soo),김태민(Kim, Tae-min),이현수(Lee, Hyun-Soo) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.1

LSTM을 이용한 항법시스템의 확장칼만필터 공분산 튜닝

양현정(Hyeon-Jung Yang),성상만(Sang Man Seong) 제어로봇시스템학회 2022 제어·로봇·시스템학회 논문지 Vol.28 No.2

Noise covariances in the EKF (Extended Kalman Filter) act as tuning parameters due to modeling errors, such as the error generated in the process of linearizing the nonlinear system equation. Filter designers traditionally prefer the trial-and-error method. However, because the noise covariances require retuning in concert with changes in trajectories or changes in system equations, human tuning is very time consuming. Accordingly, this study proposes an automation method for real-time parameter tuning using an LSTM (Long Short-Term Memory) neural network. The proposed method consists of two stages: 1) generating residual and state error covariances from an EKF using fixed-noise covariances and 2) producing a state estimate from an EKF using tuned time-varying noise covariances obtained from an LSTM neural network. This scheme is applied to navigation systems to calculate accurate velocity, attitude, and IMU bias estimates under challenging maneuvering situations. Using simulation, we showed that the proposed method outperforms the conventional EKF of navigation systems in suppressing estimation error in different trajectory scenarios.

근거기반디자인을 활용한 스마트 홈서비스 디자인 방법론에 관한 연구

양현정(Yang, Hyeon-Jeong),이현수(Lee, Hyun-Soo) 한국실내디자인학회 2014 한국실내디자인학회 학술대회논문집 Vol.2014 No.11

The medicine field maintains that evidence-based medicine be utilized to enhance heath care efficiency(EBM). This enabled design in healthcare environments to establish qualified design strategy to guarantee the effect of treatment(EBD). As human life is much affected by living environment, it should be very carefully planned. Therefore, for planning housing environment, it is very appropriate to utilize decision-making (EBD) based on qualitative and quantitative data. This research herein aims to derive measures that enable evidence-based design to be applied to smart-home service. Detailed research problems are as follows; (1) Define concepts of evidence-based design, (2) Summarize design methodology of evidence-based design, (3) Summarize information collection methods for evidence suggestion, (4) Collect housing environment information for smart-home service, (5) Discuss smart-home service process development measures. In conclusion, 4 steps of evidence-based design methodology (i.e. information collection, research goal set-up, strategic analysis on research hypothesis-based information, and conclusion inducement) were used to develop a housing smart service design process. This will enable us to suggest service for one-to-one customized, pleasant housing environment and healthy building management.

재택근무를 위한 Adaptable 공간 모듈의 독립성 확보 방안 연구 - 스마트 월의 음환경 성능평가 결과 개선방안을 중심으로 -

양현정(Yang, Hyeon-Jeong),김수암(Kim, Soo-Am),정준수(Chung, Joon-Soo),김태민(Kim, Tae-Min),이현수(Lee, Hyun-Soo) 대한건축학회 2022 대한건축학회 학술발표대회 논문집 Vol.42 No.2

공동주택 리모델링 전후 성능 평가항목 도출을 위한 영국 BREEAM의 신축, 기존, 개수 평가항목 및 기준 비교

양현정(Yang, Hyeon-Jeong),김수암(Kim, Soo-Am),백정훈(Baek, Cheong-Hoon) 대한건축학회 2016 대한건축학회 학술발표대회 논문집 Vol.36 No.2

의사결정나무분석을 활용한 대학 입학 1년 후의 행복 결정 요인 탐색

양현정(Yang Hyunjung) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.20

본 연구는 의사결정나무분석을 활용하여 대학 입학 1년 후의 행복을 예측할 수 있는 결정 요인을 탐색하고자 하였다. 이를 위하여 2017년 10개월 간격(2월 입학 시점-12월 1학년 말 시점)으로 반복 측정한 1,099개의 설문조사 자료를 분석하였다. 목표 변인은 1학년 말 시점의 행복 수준으로 설정하였으며, 예측변인으로는 불안․우울, 외향성, 1․2학기 성적평점, 역량, 교육만족도, 대인관계, 신체적 건강수준, 입학시점의 행복 수준을 투입하였다. 분석결과, 대학 입학 1년 후의 행복감을 결정하는 가장 중요한 변인은 1학년 말 시점의 대인관계로 나타났다. 대인관계가 가장 좋은 집단은 가장 높은 행복감을, 대인관계가 가장 빈약한 집단은 가장 낮은 행복감을 보고했다. 대인관계 점수가 평균이하인 집단은 1학년 말 시점의 불안․우울 수준에 따라 행복감에 차이를 보였으며, 대인관계 점수가 평균이상인 집단은 입학시점의 행복 수준에 따라 1학년 말 시점의 행복에도 차이가 나타났다. 이러한 연구결과를 바탕으로 본 연구의 의의와 추후연구를 위한 제언을 논하였다. The purpose of this study is to explore the determinants of happiness in the first year of university using decision tree analysis. This study analyzed 1,099 survey data that were repeatedly measured at a 10-month interval in 2017 (the time of admission to college-the end of the first grade). Target variable was the level of happiness at the end of the first grade. Input variables were various characteristics, the level of anxiet y․depression, extroversion, 1st and 2nd semester GPAs, competence, education satisfaction, interpersonal relationship, physical health, and the level of happiness at the time of admission. The findings of the study were as follows: First, the interpersonal relationship was the most significant determinant of happiness at the end of the first grade. A group with the highest score in the interpersonal relationship reported the highest happiness, while those with the lowest score in the interpersonal relationship reported the lowest happiness. Second, a group with below-average scores in interpersonal relationship showed different levels of happiness according to anxiety and depression at the end of the first grade. Third, a group with above-average scores in interpersonal relationship also showed a difference in happiness at the end of the first grade, depending on the level of happiness at the time of admission. Based on the results of the study