칩 간 공간적 유사성과 검사항목의 상관관계를 고려한 반도체 웨이퍼 테스트 데이터의 결측치 대체 방법 개발

김주영(Juyeong Kim),배영목(Youngmok Bae),최승현(Seunghyun Choi),김광재(Kwangjae Kim) 대한산업공학회 2023 대한산업공학회지 Vol.49 No.3

SDR기술을 활용한 차량 간 무선통신 디스플레이 서비스

김주영(JuYeong Kim),김태준(Taejoon Kim) 한국정보기술학회 2024 Proceedings of KIIT Conference Vol.2024 No.11

본 연구는 소프트웨어 정의 라디오 (SDR software defined radio) 기술을 기반으로 차량 간 무선통신 서비스를 개발하고 실용성을 검증하는 것을 목표로 한다. SDR의 주파수와 프로토콜 유연성을 활용하여 5.9 GHz V2X 대역 등 다양한 주파수로 신호를 실시간으로 수신하고 워터폴 디스플레이로 시각화하여 교통 정보와 안전 경고를 제공한다. 라즈베리파이를 서버로 활용한 프로토타입은 SDR 기술을 차량 통신에 적용할 수 있음을 확인하였다. 향후 고성능 프로세서를 통해 실시간 경고 기능을 추가하여 스마트 교통 시스템의 가능성을 확장할 계획이다. 본 연구는 SDR 기술이 차량 간 통신의 유연성과 효율성을 높여 안전하고 원활한 교통 환경을 구축에 기여할 수 있음을 시사한다. This study aims to develop and validate an SDR-based vehicle-to-vehicle communication service. Leveraging SDR’s adaptability in frequency, the system receives and visualizes signals in real-time, including the 5.9 GHz V2X band, providing traffic data and safety alerts via a waterfall display. The prototype, utilizing a RaspberryPi as a server, demonstrates the feasibility of SDR technology in vehicular communication. Future enhancements with high-performance processors will expand real-time alert functions, supporting SDR's potential to enhance flexible and efficient vehicle communication for safer and smoother traffic systems.

삼중 열병합발전소에 적용가능한 에너지 모니터링 시스템 적용 방안에 관한 연구

김주영 ( Juyeong Kim ),문홍근 ( Honggeun Moon ),장민식 ( Minsik Jang ),김태유 ( Taeyoo Kim ),원솔찬 ( Soulchan Won ),이예원 ( Yewon Lee ),장재영 ( Jae Young Chang ) 한국폐기물자원순환학회 2023 추계학술연구발표회 Vol.2023 No.0

외상후 스트레스 장애 증상의 심각도와 억제 통제 결함의 관계: 수면의 질과 우울의 이중매개효과

김주영(Juyeong Kim),김은경(Eunkyung Kim),윤진웅(Jinwoong Yoon) 대한신경정신의학회 2024 신경정신의학 Vol.63 No.3

Objectives This study investigates the mediating effects of sleep quality and depression on the relationship between post-traumatic stress disorder (PTSD) symptom severity and inhibitory control deficit among psychiatric patients. Methods A total of 189 psychiatric patients completed questionnaires on PTSD symptom se-verity by using the Korean version of the Impact of Event Scale-Revised; they answered ques-tions on sleep quality based on the Korean version of the Pittsburgh Sleep Quality Index, and answered questions on depression based on the Korean-Beck Depression Inventory-II. They were also tested to measure inhibitory control deficit by using the Stroop Task. Regression analy-sis and the bootstrap sampling method were conducted for data analyses. Results The major findings of this study are as follows. First, PTSD symptom severity predicted inhibitory control deficit. Secondly, depression significantly mediated the relationship between PTSD symptom severity and inhibitory control deficit, but did not affect sleep quality. Lastly, the sequential mediating effect of sleep quality and depression was significant in the relationship be-tween PTSD symptom severity and inhibitory control deficit. Conclusion These results suggest that sleep quality and depression should be considered in the pathway from PTSD symptom severity leading to inhibitory control deficit. Therefore, addressing sleep quality and depression in PTSD intervention may help prevent the development of inhibito-ry control deficit.

조향 너클의 강성을 고려한 최적설계기법의 개발

김주영(Juyeong Kim),김철(Cheol Kim),이영춘(Youngchoon Lee),조명재(Myengjae Cho) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11

Combined forces and moments on the body of commercial vehicles are transferred to car wheels. The connecting mechanical part between a vehicle and a wheel is a steering knuckle. The steering knuckle should ensure various vertical and horizontal loads such as rolling and dive when sudden stop or steering take place. Stress distributions were calculated and analyzed for optimal design. This study discussed for steering knuckle characteristics and how to design the optimal steering knuckle.

줄넘기 운동이 초등학교 여학생의 건강체력과 골밀도에 미치는 영향

김주영(Kim, Juyeong),김경래(Kim, Kyeonglae),안민지(Ann, Minji),김태형(Kim, Taihyung) 학습자중심교과교육학회 2016 학습자중심교과교육연구 Vol.16 No.10

이 연구는 줄넘기 운동이 초등학교 여학생들의 건강체력과 골밀도에 어떤 영향을 주는지 규명하는 데 목적이 있다. 이 연구의 목적을 달성하기 위하여 Y도시에 소재한 P초등학교 5, 6학년 여학생 30명을 임의로 선정한 후, 운동집단과 비교집단에 각 각 15명씩 무선 배정하고 운동처치 전․후의 건강체력과 골밀도를 측정하였다. 운동처치 유무에 따른 집단 내 평균차이 및 실험 후의 집단 간 평균차이를 확인하기 위하여 SPSS 18.0 통계 프로그램을 사용하여 t-검증을 실시하였으며, 그 결과는 다음 과 같다. 첫째, 12주 동안의 줄넘기 운동은 5, 6학년 여학생의 심폐지구력, 유연성, 근력, 근지구력, 체지방률의 개선에 큰 도움이 되었다. 둘째, 12주 동안의 줄넘기 운동 후 골밀도의 측정결과 비교집단은 평균점수가 감소하였고 운동집단은 평균점수가 증가하였으나, 통계적으로 유의한 차이를 보이지 않았다. 결론적으로, 이 연구에서 사용된 줄넘기 운동은 초등학교 여학생의 건강체력 향상에는 효과가 있었으나 골밀도 향상에는 통계적으로 유의한 효과가 없는 것으로 나타났다 The purpose of this study is to investigate that rope skipping exercise influence on health related fitness and bone density of 5th and 6th grade female elementary school students. To achieve this purpose, 30 female elementary school students who 12-13 years old at P elementary school located in the Y city were randomly selected for the subject of this study. They were classified into training group (n=15) and control group(n=15), then measure health related fitness and bone density of exercise prescription of the pre and the post. This study conducted the t-test using SPSS WIN Ver. 18.0 statistics program. The results are as follows. First, the rope skipping exercise training during 12 weeks helped elementary school girls improved the cardiorespiratory endurance, flexibility, muscle strength, muscular endurance and % body fat. During 12 weeks, exercise group was shown different significantly but there was no significant difference in the control group of these all elements. Secondly, the change of bone density after 12 week rope skipping exercise training did not show significant difference statistically. In conclusion, this study using rope skipping exercise was effective for enhancement of health related fitness but bone density was no significant difference statistically.

청소년의 정신건강문해력과 도움 요청 태도에 대한 연구 : 부모 태도와 친구 태도의 조절 효과

김주영(Kim,Juyeong),남보영(Nam, Boyoung) 한국정신건강사회복지학회 2024 정신보건과 사회사업 Vol.52 No.4

Mental health has a significant impact on both individuals and society, but our society still lacks a proper understanding of it. This is especially important during adolescence, as mental health problems often begin to manifest during this period. Early intervention can greatly influence later life outcomes, but such intervention is often delayed for various reasons. Therefore, This study surveyed the relationship between mental health literacy and help-seeking attitudes among 300 adolescents from four middle schools in region D, Gyeonggi Province, and examined whether the attitudes of parents and friends have a moderating effect. The results showed that adolescents' mental health literacy positively influences help-seeking attitudes, and that parents'attitudes had a moderating effect on the relationship between the two variables. However, the moderating effect of friends' attitudes was not statistically significant. These findings suggest that the level of adolescents' mental health literacy is influenced by their parents, and that this can lead to changes in help-seeking attitudes. Therefore, the conclusion presents directions and practical measures for mental health literacy education to enhance adolescents' mental health.

실험계획법을 이용한 GDI연료펌프의 맥동저감을 위한 댐퍼 최적설계

김주영(Juyeong Kim),노진이(Jinyee Noh),이종욱(Jongwook Lee),김경남(Kyungnam Kim),박형종(Hyoungjong Park),황재근(Jaekeun Hwang),이연홍(Yeonhong Lee),윤길호(Gilho Yoon) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11

This study optimizes the profile of the diaphragm of a pressure pulsation damper structure in a high-pressure GDI engine system which is now under development by applying the design of experiment (DOE). As a high pressure pulsation ranging from 0 to 10 Bar deteriorates the performance of GDI engine, it is necessary to attenuate the large amplitude of fluid pulsation pressure of Gasoline fuel directly injected into GDI engine. In the development of this pressure damper, it becomes an issue to design optimal profiles of the enveloping diaphragms in terms of pulsation efficiency and mechanical stress for the sake of safety. Thus, this research develops a new finite element procedure considering the internal pressure variation by assuming the isoenthalpy state of the enveloped Helium gas inside the damper and integrates the iterative finite element procedure with the design of experiment (DOE).

재래시장의 시장 지향적 분류에 따른 발전방향

김주영(Kim, Juyeong),박정은(Park, Jeongeun) 한국유통학회 2011 流通硏究 Vol.16 No.5

현재 우리나라에는 약 1500여개의 재래시장이 있다. 이들 재래시장은 삼성과 롯데와 같은 대기업에 의해 운영되는 SSM과 할인점 등의 시장 진입으로 인해 경쟁이 치열해지고 있고 급변하는 유통환경의 변화에 따라 생존의 위협을 받고 있다. 또한 재래시장의 파워가 약해짐으로 인해 지역 상인들의 생존이 위협을 받고 있고, 지역 경제 또한 악화되고 있다. 따라서 백화점과 할인점을 선호하는 소비자들에게 보다 나은 가치를 제공해 주기 위해 재래 시장은 보다 시장지향적인 전략을 취해 나가야 할 것이다. 시장지향적 전략은 다음 세가지 하부 개념으로 이루어진다 (Narver와 Slater,1990): 고객 지향성 (customer orientation), 경쟁지향성 (competitor orientation), 그리고 기능간 조정 (inter-functional coordinations). 본연구의 첫 번째 목적은 지역 사회에서의 재래시장의 적절한 역할을 제안하는 것이다. 둘째는 재래시장이 지역에서 장기적으로 생존하기 위해 필요한 시장 지향적인 기능을 알아보고자 한다. 마지막으로 본 연구는 다양한 지역사회와 다양한 상황에서 재래시장이 지향해야 할 성공적인 재래시장 유형을 개발하기 위해 적절한 정책 방향을 제안하는 것이다. 이들 목적을 성취하기 위해 본 연구는 다음과 같은 구성으로 되어 있다. 우선 재래시장과 지역 경제 발전을 위한. 기존의 연구보고서와 정책 보고서를 살펴보고 기존 정책의 장-단점을 제시하였다. 둘째로 재래시장의 시장지향적인 유형과 기준을 제시하였고, 지역 시장과 지역의 경제 상황 특성에 따라 재래시장의 기능과 발전 형태에 대해 제안하였다. 마지막으로 본연구의 공헌점과 미래 정책 개발에 있어서의 시사점 둥을 토론 하였다. 특히 정책 개발 방향에 있어 본 연구는 정책의 효율성과 경제적 효과, 인력 개발과 운영 시스템, 그리고 이러한 개발과 정에서의 정부의 역할과 지역 상인의 보호 방안등에 대해서 중점적으로 논의를 하였다. There are about 1,500 small or large traditional markets in Korea. Those conventional markets have been struggling for survival in rapidly changing market environment with highly intensified competition by accelerating the entrance of the Large-scale Discount Store and Super Supermarket which are managed and supported by Large companies like Samsung and Lotte. The loosing power of conventional markets have threatened the local merchants" survival and have influenced local economics falling down. To create better value for the customers who have more preference for department store and discount stores than conventional markets, conventional markets should have market orientation, which has three sub dimensions; customer orientation, competitor orientation and inter-functional coordinations. First objective of study is to find the appropriate roles of conventional markets in local areas. Second is to find out the market orientation functions for conventional markets to be survival in local markets in the long terms. Finally, this study will suggest some policies for the appropriate types of successful conventional markets considering various local situations. To achieve those objectives, we did the following procedure. First, we review the previous reports and studies of policies for conventional markets and local economy development, and propose some pros and cons of the previous policies. Secondly, we develop a market orientation framework of conventional markets, in which we suggest the developmental types and functions of market- orientation of conventional markets in accordance with the characteristics of local market and economic conditions of local areas. Then we formulate and discuss the study"s contributions, managerial implications, and directions for future policy development. Especially for the policy development, we suggest the efficiency and economical effects of policy, human being development and management system, and the role of government and protection of local merchants in the development process.

미세 기공의 한정된 공간에 의한 게스트 분자의 광학 특성 변화 고찰

박수현,김주영,Park, Suhyeon,Kim, Juyeong 한국분말재료학회 (*구 분말야금학회) 2020 한국분말재료학회지 (KPMI) Vol.27 No.6

Metal-organic frameworks (MOFs) are of significant interest because of their high porosity, which facilitates their utilization in gas storage and catalysis. To enhance their current properties in these applications, it is necessary to elucidate the interactions between molecules in a confined environment that differ from those in bulk conditions. Herein, we study the confined molecular interaction by investigating the solvent-dependent photophysical properties of two different-sized molecules inside MOF-5. Ruthenium tris-bipyridine (Rubpy) and coumarin 153 (C153) are encapsulated in MOF-5. Rubpy with MOF-5 (Rubpy@MOF) is prepared by building MOF-5 around it, resulting in limited space for solvent molecules in the pores. The smaller C153 is encapsulated in the preformed MOF-5 (C153@MOF) by simply soaking the MOF in a concentrated C153 solution. C153@MOF permits more space for solvent molecules in the pore. Their characteristic absorption and emission spectra are examined to elucidate the confined molecular interactions. Rubpy@MOF and C153@MOF exhibit different spectral shifts compared to the guest molecules under bulk conditions. This discrepancy is attributed to the different micro-environments inside the pores, derived from confined host-guest interactions in the interplay of solvent molecules.