Ni 과 Pd 내 산소의 동역학 및 열역학적 거동

박종완 대한금속재료학회(대한금속학회) 1988 대한금속·재료학회지 Vol.26 No.12

Solid-state electrochemical measurements were made to determine diffusivities and thermodynamic functions of oxygen in Ni and Pd. Diffusion of oxygen was caused by applying preselected potentials between the reference and specimen electrodes and was monitored by measuring time-dependent potentials and or currents. The following results were obtained for the diffusivities and terminal solubilities of oxygen in solid Ni and Pd : (수식) The thermodynamic properties of the Ni-O and Pd-O solutions follow the general tendency of periodic behavior from group to group.

The impact of lanthanum hafnium oxide as a gate insulator on the performance of zinc oxide thin film transistors

박종완 한양대학교 세라믹연구소 2010 Journal of Ceramic Processing Research Vol.11 No.6

리튬 이온 전지용 Si/Mo 다층박막 음극의 전기화학적 특성

박종완,Park, Jong-Wan,Ascencio Jorge A. 한국재료학회 2006 한국재료학회지 Vol.16 No.5

Si/Mo multilayer anode consisting of active/inactive material was prepared using rf/dc magnetron sputtering. Molybdenum acts as a buffer against the volume change of the Silicon. Multilayer deposited on RT (reversible treatment) copper foil current collector to enhance adhesion between Silicon and copper foil. Deposited Silicon was identified as an amorphous. Amorphous has a relatively open structure than crystal structure, thus prevents the lattice expansion and has many diffusion paths of Li ion. When deposited time of Silicon and Molybdenum is 30 second and 2 second respectably, electrode has more capacity and good cycle stability. A 3000 nm thick multilayer was maintained 99% of the initial capacity (1624 $mAhg^{-1}$) after 100 cycles. As the increase of the multilayer thickness (4500 nm, 6000 nm), Si/Mo mutilayer anodes show aggravation cycle stability.

군용 중형표준차량류 운용시험평가 개선방안: “야전주행거리” 항목을 중심으로

박종완,정희태 한국신뢰성학회 2022 신뢰성응용연구 Vol.22 No.4

Purpose: This paper aims to establish a standard for the application of field drive distance in the operational test and evaluation (OT&E) scheme of military vehicles. To date, there is no standardized method for applying the field drive distance during the OT&E process of military vehicles, therefore, it is uniquely applied for each vehicle. As a consequence, conflicts arise between the relevant institutions and departments, which take considerable time to resolve. Thus, to tackle this problem, a standardized scheme is highly required. Methods: To resolve issues related to field drive distance and road conditions, certain application standards are realized by comprehensively considering the DELIIS, OMS-MP, and OT&E schemes. Results: As a result of applying the DELIIS, OMS-MP, and OT&E schemes to estimate the field drive distance of mid-size standard vehicles, similar values of distance are obtained. Specifically, it was calculated from about 7,400km to 7,900km; thus, the proposed method proves to be appropriate. Furthermore, it is appropriate to classify road conditions into two groups – road-secondary and cross-country, considering the characteristics of the field training ground. Conclusion: Confidently, the standards realized in this paper will be effective when applying the field drive distance and road conditions to the OT&E of medium-sized military vehicles.

Fe-Ni-Nb-Si-B 비정질 합금의 자기적 성질에 미치는 Nb 첨가와 열처리 효과

박종완,김헌도 대한금속재료학회(대한금속학회) 1989 대한금속·재료학회지 Vol.27 No.7

The effects of Nb addition and annealing on the magnetic properties were in vestigated for (Fe_(0.82)Ni_(0.18-x)Nb_x)_(83)Si_5B_(12) amorphous alloys which have law metalloid content. In this study, the amorphous nature of alloys prepared by single roll method was confirmed by X-ray diffraction method. Magnetic field annealing was performed at various temperatures below the crystalliztion temperature for 20 minutes in N₂gas atmosphere. With increasing Nb content, the thermal stability and both AC and DC magnetic properties were improved. Longitudinal magnetic field annealing also greatly improved the DC and 60 Hz characteristics. These improvements were attributed to the reduction of domain width by Nb addition, the induction of uniaxial magnetic anisotropy, and disappearance of Maze domains by magnetic field annealing. Transverse magnetic field annealing found to be very effective for the improvement of high frequency magnetic properties.

서울정원박람회 여백의 정원 설계

박종완,황신예,최상민,김효성,황현진,김예원,황은결 (사)한국정원디자인학회 2017 한국정원디자인학회지 Vol.3 No.2

‘Garden of The Empty Space’ is one of the show gardens in the Seoul Garden Show, which has held on 22th of September, 2017 to 26th of September on grass square, Yeouido Park. The site is on the lawn with a gentle slope, the area is 10m × 6m. The main design concept is the reinterpretation of empty space, which is Korea traditional housing crucial elements. For the express of the main design concept of the empty space, used the simple garden structures, heavy designed frame, and used the lower wall at the edge of the garden to focus on the planting design. The plants used of the 37 species of plants, which was 1 tree, 16 shrubs, 20 herbaceous plants. The main courtyard space used Japanese maple tree as a focal point tree. The edge of the garden planted a variety of perennials plants for the seasonal changes effects. The garden furniture used the designed frame, which is 3.5m × 6m × 2.5m, and height 2.5m. The designed frame material used Glulam, considered with the vertical enclosed effects, and openness to the surrounding landscapes. Through this study, a suitable model for the using empty space concept was adapted garden design within the Korea traditional housing design context. 본 설계는 2017년 9월 22일부터 9월 26일까지 개최된 서울정원박람회의 작가정원 전시작 중 여백의 정원을 시공하기위해 진행된 결과물로서 설계대상지는 여의도공원 내 잔디광장 일원에 조성되었다. 완만한 경사를 가진 잔디밭에 가로10m, 세로 6m의 규모로 정원이 계획되었고, 전통한옥의 중정 공간을 모티브로 여백의 공간이 주는 비움을 정원에 나타내고자 하였다. 중정공간은 정원의 핵심적인 개념을 표현하고자 절제된 식재와 간결한 정원조형물을 도입하고, 그 주변공간에는 여백을 강조하기 위한 무게감 있는 조형프레임을 주요 시설물로 배치했으며, 정원의 가장자리는 낮은 담을 통해식재를 강조하도록 하였다. 식물재료는 교목 1종, 관목 16종, 초화 및 지피류 20종으로 총 37종으로 계획하고, 중정공간은청이단풍을 초점식재하고, 주변으로 그라스류를 간결하게 식재하였다. 가장자리 화단은 혼식을 통해 계절감을 느낄 수있도록 식물재료를 설계하였다. 주요 시설물로는 조형프레임을 디자인하여 수직적인 위요감을 주는 동시에 개방감을 고려하였다. 조형프레임 소재는 폭 300mm의 글루램(glulam) 목재를 사용하였고, 규모는 높이 2.5m, 폭 3.5m, 길이 6.0m로평의자도 동일한 소재를 활용하여 재료의 일관성을 부여하였다. 본 설계를 통하여 비움이라는 설계개념을 정원에 적용하고, 주변의 경관을 정원 내부로 끌어들이는 조성 기법에 대한 모색과 함께 전통적인 중정의 공간구조적인 특징을 살려정원디자인의 새로운 유형을 제시하고자 하였다.

SE 프로세스와 연계한 시험평가 단계의 QFD 적용방안 연구

박종완,이재우,Park, Jong Wan,Lee, Jae Woo 한국시스템엔지니어링학회 2018 시스템엔지니어링학술지 Vol.14 No.2

The research and development stage can improve the goal level of the project through systematic operation and management of systems engineering. The test evaluation tasks in the R&D process have a lot of connections with the system engineering in terms of requirement management, and the methodology for deriving the requirements when establishing the test evaluation items has been consistently required. In this paper, we propose the process of effectively establishing and using QFD (Quality Function Deployment), a tool to manage customer requirement, and drawing up HOQ (House of Quality) in the search and exploratory development stage of the self - propelled mortar project.

일 도시 청년 인구의 불안 우울 공존 증상 네트워크 분석

박종완,이효철,홍재은,이석범,이정재,김경민,정효석,김도현 한국정신신체의학회 2023 정신신체의학 Vol.31 No.2

연구목적우울장애와 불안장애는 흔히 공존하며 임상전단계에서도 흔히 공존한다. 본 연구는 일반인구 집단에서 우울장애와 불안장애가 공존시의 복합 네트워크를 구성하여 중심 증상과 중개 증상을 밝히고자 했다. 방 법2022년 아산시 청년 정신건강실태조사 데이터를 활용하여 진행하였다. 일반 인구집단 810명의 성인을 대상으로 PHQ-9과 GAD-7을 이용하여 각각 우울과 불안증상의 정도를 측정하였고, 각 증상에 대해 Isingfit model을 기반으로 네트워크 구조를 도출하였다. 주요 증상 및 중개 증상을 찾기 위해 네트워크 지표 중 강도중심성과 bridge expected influence를 활용하였다. 결 과우울한 기분, 안절부절 못함과 초조함이 네트워크에서 가장 높은 강도중심성을 보였으며, 불안증상과 우울증상 간의 높은 중개 역할을 하는 증상은 안절부절 못함과 과민성이었다. 결 론일반 인구집단에서 우울증상과 불안증상이 공존할 때의 중심증 상과 중개증상을 규명하였고 치료적 중재의목표가 되면 두 질환의 동반이환율을 감소시키는데 기여할 수 있을 것으로 기대된다. Objectives:Depressive disorder and anxiety disorder frequently co-occur, even at sub-threshold level. This study aims to identify network structure of co-morbid depression and anxiety at symptom level in nonclinical population and to reveal the central symptoms and bridge symptoms of the co-morbidity. Methods:This study was based on 2022 Asan Youth Mental Health Screening. Patient health questionnaire (PHQ-9) and Generalized anxiety disorder scale (GAD-7) were used to assess depressive and anxiety symptoms of 810 young adult participants from community sample. Network structure of co-morbid depressive and anxiety symptoms was estimated by Isingfit model. Results:Depressed mood, Restlessness and Nervousness were the most central symptoms in the network. Bridge symptoms between anxiety and depression were Restlessness and Irritability. Conclusions:This study revealed key central symptoms and bridge symptoms of co-morbid depression and anxiety in nonclinical population and provided potential insight for treatment targets to reduce co-morbidity.

미국의 긴급능력획득제도와 우리의 시사점

박종완 한국방위산업진흥회 2021 國防과 技術 Vol.- No.509

人蔘 Saponin Fraction이 白鼠脂質代謝에 미치는 影響

朴鍾玩 中央醫學社 1969 中央醫學 Vol.17 No.1