의학전문대학원 학생들의 수면과 심리적 요인

김대욱,김성곤,김지훈,양영희,정우영,이진성,Kim, Dae-Wook,Kim, Sung-Gon,Kim, Ji-Hoon,Yang, Young-Hui,Jung, Woo-Young,Lee, Jin-Seong 대한수면의학회 2013 수면·정신생리 Vol.20 No.2

목 적 : 의학전문대학원 학생들은 과도한 학업으로 인해 수면 시간이 부족하고 수면의 질이 낮다고 알려져 있다. 본 연구는 의학전문대학원 학생의 수면 양상 및 이와 연관이 있을 것으로 생각되는 심리적 문제를 조사하였다. 방 법 : 부산대학교 의학전문대학원 1~4학년 학생 352명을 대상으로 수면 양상, Pittsburgh sleep quality index(PSQI), Epworth sleepiness scale(ESS), global assessment of recent stress scale(GASS), the center for epidemiologic studies-depression scale(CES-D), and Moudsley obsessive-compulsive inventory(MOCI)를 조사하였다. 두 군간 연속변수 비교에는 독립 t-검정, 비연속비교는 ${\chi}^2$-검정, 두 변수간의 상관관계는 Pearson 상관분석, 그리고 세 군 이상 비교에는 ANOVA를 이용하였다(p<0.05, 양측검정). 결 과 : 평일 수면시간 5시간 36분, 주말 수면시간 7시간 39분으로, 주말 수면시간이 더 길었다(t=15.94, p<0.001). 취침 시각은 평일 0 : 49, 주말 1 : 34으로 주말에 더 늦게 취침하였고(t=-5.23, p<0.001), 기상 시각은 평일 6 : 58,. 주말 9 : 30으로 주말에 더 늦게 기상하였다(t=-24.48, p<0.001). PSQI는 ESS(r=0.383, p<0.001), GASS(r=0.326, p<0.001), CES-D(r=0.393, p<0.001), 그리고 MOCI 점수(r=0.247, p< 0.001)와 양의 상관관계를 보였지만, 성적과는 상관관계를 보이지 않았다(r=0.072, p=0.228). 학년이 높을수록 PSQI, GASS, CES-D, MOCI 점수가 낮았다(p<0.05). 결 론 : 의학전문대학원생들의 수면의 질은 낮았고 수면 시간은 부족하였다. 수면의 질은 주간졸림, 우울감, 스트레스, 강박 성향과 연관성이 있었다. Introduction: Although it is well known that medical students are not getting an adequate amount of sleep, there have been only a few studies on the sleep patterns of medical students and the related factors. Therefore, the present study aimed to investigate the medical students' sleep patterns and the related factors. Methods: A questionnaire package was administered to the $1^{st}$ to $4^{th}$ year medical students at one medical school. It consisted of questions asking about their lifestyles as well as Pittsburgh sleep quality index (PSQI), Epworth sleepiness scale (ESS), global assessment of recent stress scale (GASS), the center for epidemiologic studies-depression scale (CES-D), and Moudsley obsessive-compulsive inventory (MOCI). A total of 352 students (206 males and 146 females) responded to the survey and the result was analyzed using the independent t-test, the chi-square test, the paired t-test, Pearson's correlation and ANOVA. p-values of less than 0.05 were considered statistically significant in analyses. Results: The weekend bedtime was significantly delayed (0 : 49 on weekday ; 1 : 34 on weekend ; t=-5.23, p<0.001), the weekend rise time was delayed (6 : 58 on weekday ; 9 : 30 on weekend ; t=-24.48, p<0.001) and the total sleep time was increased on weekends (5 : 36 on weekday ; 7 : 39 on weekend ; t=15.94, p<0.001). The PSQI score of all subjects was 6.43{\pm}2.64. PSQI was positively correlated with ESS (r=0.383, p<0.001), GASS (r=0.326, p<0.001), CES-D (r=0.393, p< 0.001), and MOCI (r=0.247, p<0.001), but not with GPA (r=0.072, p=0.228. The more senior students had lower PSQI, GASS, CES-D, and MOCI score (p<0.05). Conclusion: Medical students were experiencing a lack of sleep during weekdays as they have a later bedtime and earlier rise time, and consequently had more hours of sleep on weekends. Overall, the medical students were experiencing poor sleep quality and sleep deprivation. Poor sleep quality is associated with psychological problems (daytime sleepiness, stress, depression, and obsessive tendency).

플라즈마 침탄 공정을 이용한 SCM415강의 표면 경화 특성

김대욱,김동원,임병수,김석범,Kim, Dae-Wook,Kim, Dong-Won,Lim, Byeong-Soo,Kim, Seuk-Buom 한국재료학회 1998 한국재료학회지 Vol.8 No.8

현재 자동차용 소재 및 기계부품에 폭넓게 이용되는 SCM415강의 플라즈마 침탄 특성을 연구하기 위해 가스조성, 압력, 전류밀도, 온도 및 시간을 변수로 사용하였다. 가스조성의 경우 저합금강에서는 수소 가스 효과보다 메탄가스에 의해 주로 침탄특성이 좌우되며 메탄가스 100%일 때 시편 내의 모든 방향에서 경화층 분포가 일정하고, 최대의 유효경화깊이를 얻을 수 있었다. 가스압력이나 플라즈마 전압이 상승할 때 전류밀도가 상승하게 되는데, 이에 따라 최표면의 탄소농도가 증가되어 강의 유효경화깊이는 증대되었다. 침탄 온도일 경우 적어도 85$0^{\circ}C$이상되어야 유효경화깊이를 얻을 수 있었고, 온도가 상승할수록 유효경화깊이의 증가를 나타내어 침탄 효과가 우수하였다. 탄소의 확산 깊이는 침탄 시간의 제곱근에 비례하는 것으로 나타났다. 플라즈마 치탄한 강의 피로강도를 평가한 결과 열처리하지 않은 시편이나 재가열처리한 시편에 비해 높은 피로강도를 나타내었다. The influence of plasma carburizing process on the surface hardness of SCM415 low-alloy steel (0.15% C) was investigated under the various process conditions of gas composition. gas pressure, plasma current density. temperature and time. The effective case depth was found to depend on the amount of methan gas containing carbon. thus the deepest case depth and the uniform hardeness were obtained with the 100% methan gas. The case depth increased with the plasma current density. The effective plasma carburizing temperature of SCM415 steel was found to be higher than 85$0^{\circ}C$, and the case depth was proportional to the square root of carburizing time under the same current density. The bending fatigue strength of the plasma carburized specimen is' higher than those of as- received specimen or reheat-quenched specimen.

KC-100 소형항공기 추진계통 비행시험 사례연구

김대욱,강성수,김찬조,우봉길,Kim, Dae-wook,Kang, Sung-soo,Kim, Chan-jo,Wu, Bong-gil 항공우주시스템공학회 2013 항공우주시스템공학회지 Vol.7 No.2

The conformity of propulsion system need to be evaluated thorough the flight test because it is an important part of the airplane to ensure the flight safety. In the small airplane development, the flight test according to KAS(Korean Airworthiness Standards) Part 23 is one of the ways to verify compliance in terms of satisfactory aircraft/engine/propeller integration. This thesis introduces means of verifying the compliance and test requirement of KAS Part 23 for the conformity of the propulsion system in small airplane. It also describes procedures and methods of propulsion system flight test through KC-100 airplane project.

The Effects of Ownership, Regulation and Marked Structure on the Pricing: Evidence from the U.S. Electricity and Natural Gas Industries

김대욱,Kim, Dae-Wook 한국환경경제학회 2008 자원·환경경제연구 Vol.17 No.4

본 논문은 미국의 전력산업과 천연가스산업이 본격적인 구조변화를 시작한 1999년부터 2001년까지의 자료를 사용하여 제도적인 변화가 시장가격에 미친 영향을 분석한다. 이를 위해 가격에 영향을 미치는 비용과 수요를 제어한 축약형태(reduced forms) 모형의 회귀분석을 사용하여, 본 논문은 제도적인 요소 중에서 구체적으로 어떠한 요소가 가격결정과 긴밀히 연결되어 있는지를 추정한다. 분석결과에 의하면 투자자 소유의 기업의 전력가격이 공기업에 비해서 보다 높은 것으로 추정되었다. 더불어 전기와 천연가스 2개의 상품을 공급하는 기업은 1개의 재화를 제공하는 기업에 비해서 두 재화를 보다 저렴한 가격으로 공급하는 규모의 경제를 가지고 있는 것으로 나타났다. 마지막으로 천연가스 기업간의 합병은 합병이 일어나지 않은 지역에 비해서 가스요금의 수준이 보다 높은 것으로 나타났다. In this paper, we examine the institutional prices differences in the electricity and natural gas industries using unbalanced panel data from 1999 to 2001. The changing market structures following deregulation in both markets allow us to examine the institutional prices differences by ownership type, market structure and merger activities. Estimating the reduced form, after controlling both intrinsic characteristic (marginal costs) and external factors (demand), allows us to identify the extent to which specific factors are correlated with the price. Furthermore it allows us to identify systematic institutional price differences in both electricity and natural gas markets. Our estimation results suggest that the private firms in electricity markets are associated with higher prices than public firms after controlling for demand and cost. We further find that dual-product firms in the natural gas industry and the electricity industry are associated with lower rates than single product firms. These results provide a weak evidence of economies of scope in the dual-product firms. Our results finally suggest that merger activities in natural gas markets are associated with higher rates.

교육부 중심 0-5세 유아학교 모델(안)의 단계별 정책 방향과 과제: 설립주체와 교사고용의 관점을 중심으로

김대욱,박창현,Kim, Dae-Wook,Park, Chang-Hyun 국제문화기술진흥원 2022 The Journal of the Convergence on Culture Technolo Vol.8 No.6

The Minister of Education has officially announced that the Ministry of Education will promote the integration of early childhood education and care. The core of integration is the integration of kindergartens and child care centers, and it is necessary to develop the specific model, so this study was conducted. After the discussion of integration, the discussion has focused on the "Young Children School", and there were differences of opinion on specific issues. Therefore, this study was conducted to propose the specific model for the "Young Children School" after kindergartens and child care centers were integrated with the Ministry of Education. The research question is to find out what the model of the 0-5-year-old young children school model centered on the Ministry of Education. In this study, assuming that integration of early childhood education and care was realized, a plan for integrating early childhood education institutions by type of establishment was proposed. As a conclusion of this study, first, a model of a 0-5-year-old young children school centered the Ministry of Education under the government responsibility is required. Second, a detailed school model that reflects the characteristics of each type of establishment should be developed. Finally, specific measures such as the reform of the teacher training system, the after-school course operation model, and the integration plan with the office of education and local governments should be presented during the young children school system.

만성 외측 발목 불안정

김대욱,성기선,Kim, Dae-Wook,Sung, Ki-Sun 대한족부족관절학회 2018 대한족부족관절학회지 Vol.22 No.2

Chronic lateral ankle instability is a major complication of acute ankle sprains, which can cause discomfort in both daily and sports activity. In addition, it may result in degenerative changes to the ankle joint in the long term. An accurate diagnostic approach and successful treatment plan can be established based on a comprehensive understanding of the concept of functional and mechanical instability. The patients' history and correct physical examination would be the first and most important step. The hindfoot alignment, competence of the lateral ligaments, and proprioceptive function should be evaluated. Additional information can be gathered using standard and stress radiographs. In addition, concomitant pathologic conditions can be investigated by magnetic resonance imaging. Conservative rehabilitation composed of the range of motion, muscle strengthening, and proprioceptive exercise is the main treatment for functional instability and mechanical instability. Regarding the mechanical instability, surgical treatment can be considered for irresponsible patients after a sufficient period of rehabilitation. Anatomic repair (modified $Brostr{\ddot{o}}m$ operation) is regarded as the gold standard procedure. In cases with poor prognostic factors, an anatomical reconstruction or additional procedures can be chosen. For combined intra-articular pathologies, arthroscopic procedures should be conducted, and arthroscopic lateral ligament repair has recently been introduced. Regarding the postoperative management, early functional rehabilitation with short term immobilization is recommended.

일반논문 : 네트워크 텍스트 분석방법을 활용한「지방행정연구」지의 연구경향 분석

김대욱 ( Dae Wook Kim ) 한국지방행정연구원 2015 地方行政硏究 Vol.29 No.2

이 연구는 네트워크 텍스트 분석방법을 활용하여 지방행정연구지의 연구경향을 분석하였다. 그렇게 함에 있어서 지방행정연구지를 전체분야, 자치행정분야, 지방재정분야, 지역발전분야로 구분함으로써 연구경향의 전체적인 조망과 구체적인 파악이 가능하도록 하였다. 분석결과는 다음과 같이 나타났다. 첫째, 키워드 분석결과 거버넌스, 지방정부, 주민참여, 지방자치단체 등이 주요 키워드인 것으로 나타났다. 둘째, 네트워크 분석결과 전체분야에서 중심성이 높은 연구주제는 거버넌스, 네트워크, 지역사회, 신뢰인 것으로 나타났고, 자치행정분야의 중심 연구주제는 네트워크, 거버넌스, 정책확산, 신뢰인 것으로 나타났다. 지방재정분야의 중심 연구주제는 복지재정, 지방정부, 지방재정인 것으로 나타났으며, 지역발전분야의 중심 연구주제는 지역에너지, 거버넌스, 참여인 것으로 나타났다. This study analyzes The Korea Local Administration Review by utilizing the network text analysis method, which is used to identify and analyze the individual and relational attributes of words occurring in each paper. In doing so, this study divides the research fields of the journal into all fields as well as the local administration, local finance, and local development fields to capture both overall aspects and detailed aspects. The analytical results are as follows. First, the core keywords for the research topic are governance, local government, civic participation, and local administrative body. Second, the central research subjects of the overall field are governance, network, local society, and trust. The central research subjects of the local administration field are network, governance, and policy diffusion trust. The central research subjects of the local finance field are welfare finance, local government, and local finance. And the central research subjects of local development field are local energy, governance, and participation.

평화시대 지방자치단체 남북한 교류의 방향 : 동서독 및 남북한 과거 교류경험의 비교를 통한 교훈을 바탕으로

김대욱 ( Kim Dae-wook ),손화정 ( Sohn Hwa-jung ) 한국지방행정연구원 2019 地方行政硏究 Vol.33 No.3

이 연구는 남북한 평화시대를 맞이한 지방자치단체 남북교류의 발전방향을 과거 동서독과 남북한 교류의 경험에 대한 비교분석을 통해 논의하고자 한다. 이를 위해 먼저 지방국제교류론, 기능주의, 공공외교론을 검토하고 비교분석의 요소를 도출하였다. 지방행정체제, 중앙정부와 지방정부의 역할, 교류내용, 교류성과평가가 그 항목들이며 동서독과 남북한을 각각 비교분석하였다. 비교분석 결과 동서독과 남북한의 과거 교류경험은 공통점과 차이점이 존재하고 있으므로 각각을 통해 앞으로의 교류에 대한 시사점을 도출하였다. 요약하면 우리의 경우 지방자치의 수준이 덜 성숙하고, 중앙정부의 역할이 상대적으로 크고, 교류내용이 한정적이며, 교류성과가 만족할 만한 수준이 아님이 제시되었다. 이를 통해 중앙정부와 지방정부의 역할 구분 및 강화, 교류내용의 다각화, 북한 주민을 대상으로 한 사업확대 등과 같은 발전방향을 제안하였고, 그 과정에서 행정안전부와의 협조 강화, 접경지역 사업의 우선적 추진을 추가적 검토과제로 제안하였다. This study aims to discuss the development direction of inter-Korean exchanges in local governments facing the era of peace between the two Koreas through comparative analysis of the past experiences of East-West Germany and South-North exchanges. To this end, the government first reviewed theory of international exchange of local governments, functionalism, and public diplomacy, and derived elements of comparative analysis. These items included the local administrative system, the role of the central and local governments, the contents of exchanges and the evaluation of exchange performance. Comparatively analyzed, the past experiences of exchanges between East and West Germany and the two Koreas exist in common and different ways, so we drew suggestions and lessons on future exchanges through each. In summary, it was suggested that in our case, the level of local autonomy is less mature, the role of central government is relatively large, the contents of exchanges are limited, and the exchange performance is not satisfactory. Development directions such as division and reinforcement of roles of central and local governments, diversification of exchange contents, and expansion of projects targeting North Koreans were proposed. And strengthening cooperation with the Ministry of Public Administration and Security and promoting projects in the border area as additional review tasks are discussed.

커뮤니티 자산 접근 모형의 행정학적 유용성 : 접근 모형들의 비교분석 및 지방정부의 역할

김대욱 ( Kim Dae-wook ),조원혁 ( Cho Won-hyuk ),박해육 ( Park Hae-yug ) 한국행정연구원 2019 韓國行政硏究 Vol.28 No.3

본 연구는 도시재생 및 공동체 기반 사회문제 해결과 관련하여 최근 활발하게 논의되고 있는 자산 기반 접근 모형들의 행정학적 유용성을 검토한 연구이다. 먼저 행정연구에 대한 의미를 끌어내기 위해 커뮤니티 자산의 체계적인 개념화를 시도하였다. 이어 공동체 자산의 개념을 암묵적 또는 명시적으로 활용한 다른 유형의 커뮤니티 기반 개발 모형들을 비교분석하였다. 본 연구에서 비교한 모형들은 자산 기반 커뮤니티 개발, 커뮤니티 비즈니스, 커뮤니티 웰빙, 도시경쟁력 그리고 커뮤니티 맵핑 모형이다. 이들 모형들이 커뮤니티 자산에 어떻게 접근하고 있는지를 등장배경, 주요내용, 개념적 위치, 커뮤니티 자산에 대한 강조점으로 요소를 선정하여 비교분석하였다. 분석 결과, 각 모형들은 커뮤니티 자산에 대해 서로 다른 견해를 가지고 있는 것으로 나타났고, 지방정부의 역할에 대한 권고사항에 있어 차별적 시사점을 제공하고 있다. 이러한 시사점을 바탕으로 커뮤니티 자산 모형의 행정학적 유용성을 논의하였다. This study explores theoretical and methodological issues in asset-based approaches to community development. The concept of a ‘community asset’ has been implicitly or explicitly used in the analytical frameworks of various different types of community-based development models. This paper is a preliminary analysis of how these different models approach the construction of ‘community asset’ in their theoretical perspectives, and then attempts a conceptualization of the term. The models of asset-based community development, community business, community wellbeing, community mapping, and city competitiveness are found to have different constructions of ‘community asset’, resulting in different emphases on actionable, practical recommendations. The findings imply that local governments can mix-and-match different policy tools for their community development efforts in regard to urban regeneration, depending on the various community needs and institutional contexts.

2019 개정 누리과정에 대한 유아기 자녀를 둔 어머니의 인식 및 요구 분석

김대욱(Kim, Dae-Wook),신수진(Shin, Su-Jin) 한국영유아교원교육학회 2021 유아교육학논집 Vol.25 No.1

본 연구의 목적은 2019 개정 누리과정에 대한 어머니의 인식과 요구를 조사 분석하는 데 있다. 2019 개정 누리과정에 대한 어머니의 인식과 요구를 파악하기 위해서 문헌을 분석하고, 전문가 집단, 교사 및 부모와의 협의를 통해 설문지를 개발한 후 연구 자료를 수집하였다. 2019 개정 누리과정 인식 영역은 ‘전반적 이해도’, ‘구성 방향’, ‘편성ㆍ운영’, ‘교수-학습’, ‘협력과 지원 의사’, ‘적절성 및 이점’, ‘만족도’ 총 7개 범주로 구성하였고, 2019 개정 누리과정 요구 영역은 ‘지원 요구’ 1개 범주로 구성하였다. 설문지는 총 20문항이었다. 연구대상은 만 3-5세 유아를 자녀로 둔 어머니 186명이었으며, 수집된 자료는 t-검증, x² 검증, One-Way ANOVA를 통해 분석하였고 집단 간의 차이는 Scheffé 검증을 통해 추후 분석하였다. 분석 결과, 2019 개정 누리과정에 대한 유아기 자녀를 둔 어머니의 인식은 다소 높은 것으로 나타났고, 개정된 누리과정에 대한 어머니의 다양한 요구가 있는 것이 나타났다. The purpose of this study was to investigate and analyze mothers’ awareness and the demands of the 2019 revised Nuri curriculum. In order to examine maternal awareness and the related demands of the 2019 revised Nuri curriculum, literature was analyzed and a questionnaire was developed through consultation with expert groups, teachers, and mothers. Then, the research data was collected. The area of awareness of the 2019 revised Nuri Curriculum consists of seven categories: ‘overall understanding’, ‘orientation of composition’, ‘organization and operation’, ‘teaching-learning’, ‘intention to cooperation and support’, ‘relevance and benefits’, and ‘satisfaction’. The area of demands of the 2019 revised Nuri Curriculum is composed of just one category: ‘request of support’. The questionnaire consisted of 20 questions in total. The subjects of this study were 186 mothers with children aged between 3-5 years. The collected data was analyzed through t-test, andx² test, One-Way ANOVA; and the differences between groups were later analyzed through a Scheffé test. As a result of the study, it was found that mothers’ awareness of the 2019 revised Nuri curriculum was somewhat high. Also, it was found that there are various demands from mothers with young children regarding the 2019 revised Nuri curriculum. The results of the analysis showed that the mothers’ awareness of the 2019 revised Nuri curriculum was somewhat high, and there were various needs of mothers for the revised Nuri curriculum.