위성관측(MODIS)에서 유도된 수도권 지역의 대류권 오존 및 수치실험

박유민,유정문,이석조 한국기상학회 2005 한국기상학회 학술대회 논문집 Vol.2005 No.-

느린학습자의 어휘 중재 연구 동향 분석

박유민,김화수 국제다문화의사소통학회 2023 국제다문화의사소통학회 학술대회 Vol.2023 No.11

본 연구는 느린학습자의 어휘 중재 연구 동향을 분석하여 느린학습자의 어휘 중재에 관한 논의와 추후 연구 방향성을 제시하고자 하였다. 이를 위하여 2014년부터 2023년까지 10년간 국내 학술논문 총 13 편을 대상으로 연구의 일반적 특성, 중재 유형 및 효과에 대해 분석하였다. 분석결과를 요약하면 다음 과 같다. 첫째, 13편의 연구 중 8편이 단일대상연구 설계를, 5편이 집단연구 설계를 적용하였고 연구 대상 학년은 초등 3학년과 2학년을 대상으로 한 연구가 5편, 3편으로 가장 많았으며 장애특성으로는 학습장애, 학습부진, 읽기장애, 특정교과학습장애(영어, 수학) 등 다양하게 보고되었다. 둘째, 단일대상연 구와 집단연구 모두에서 다양한 어휘 중재 전략이 사용되었고 그에 따른 어휘 학습에의 긍정적인 영향 이 보고되었다. 끝으로, 본 연구결과에 따른 논의 및 결론과 제한점에 대하여 살펴보았다.

동박과 접착력 향상을 위한 폴리이미드 합성 및 접착특성 평가

박재연(Jae Yun Park),박종현(Jong Hyun Park),박유민(Yu Min Park),박노균(No Kyun Park),김윤호(Yun Ho Kim),원종찬(Jong Chan Won) 한국고분자학회 2017 폴리머 Vol.41 No.5

차세대(5G) 디스플레이의 발전으로 인하여 데이터 전송량이 점차 증가하므로, 신호전송이 빠른 대역대인 고주파 대역을 사용한다. 신호전송을 위한 회로는 동박과 폴리이미드 필름으로 이뤄진 유연동박적층판(FCCL)이 사용되는데, 고주파는 표면으로 신호가 흐르므로 두 소재 사이의 계면 조도를 낮춰 경로를 최소화하여야 한다. 그러나 저조도 동박을 사용하면 동박과 폴리이미드 수지와의 접착 강도가 떨어지게 되므로 이러한 문제점을 보완해야 한다. 본 연구에서는 동박과 접착력 향상을 위해 다양한 폴리이미드 구조를 설계하고, 아민계 실란 기능기를 도입한 폴리아믹산을 합성하였다. 다양한 구조의 폴리아믹산은 pyromellitic dianhydride(PMDA), 3,3"4,4"-biphenyltetracarboxylicdianhydride(BPDA), 4,4"-(hexafluoroisopropylidene) diphthalic anhydride(6FDA)와 m-tolidine(mTB), 2,2"-bis(trifluoromethyl)-[1,1"-biphenyl]-4,4"-diamine(TFMB) 등의 조합으로 합성하여, 이를 동박에 코팅하고 이미드화하여 FCCL을 제조하였다. 접착력에 대한 특성은 다양한 폴리이미드 구조에 따른 박리 강도 시험과 분리된 계면에 대한 AFM, SEM, 접촉각 측정으로 상관관계를 비교 해석하여 확인하였다. Since the development in mobile display requires high data transmission speed, there is a growing need in the development of flexible copper clad laminate (FCCL) for flexible printed circuit board (FPCB) that has a high signal propagation at high frequency range. The circuit for signal transmission uses FCCL which is composed of copper foil and polyimide film. The surface roughness of copper foil has to be low to reduce the pathway of signal because the current flows near the surface at high frequency range. However, such low roughness of the copper foil results in poor adhesion to polyimide, which is a problem that should be addressed. In this study, the poly(amic acid)s (PAAs) having various structures were synthesized and the silane functional group was introduced as end group to investigate the enhancement in the adhesion with the copper metal. Various polyimide structures were synthesized with the combinations of pyromellitic dianhydride (PMDA), 4,4"-(hexafluoroisopropylidene) diphthalic anhydride (6FDA), 3-aminopropyltriethoxysilane (TEOS), 3,3",4,4"-biphenyltetracarboxylic dianhydride (BPDA), m-tolidine (mTB) and 2,2"-bis(trifluoromethyl) biphenyl-4,4"-diamine (TFDB). The synthesized PAAs were casted on the copper foil and were imidized for the fabrication of polyimide for FCCL. The adhesion strength between the polyimide and the copper foil was investigated by peel strength test and interfacial characteristics was investigated with AFM, SEM, FTIR and contact angle measurement.

Semantic Network Analysis of Newspaper Articles related to Agro-healing

박유민,신용욱 인간식물환경학회 2022 인간식물환경학회지 Vol.25 No.2

Background and objective: Despite the fact that the COVID-19 pandemic has increased the demand for mental healthservices, access has been limited, resulting in service gaps and severance. Agro-healing, which is expected to be utilizedsuccessfully to promote mental health for both individuals and communities, could be a solution. This study was conductedto provide basic data for revitalizing policies and research related to agro-healing by analyzing the trends in big data of onlinenews articles over the last decade. Methods: A total of 2,310 news articles related to agro-healing were collected from January 1, 2012 to December 31, 2021by crawling Naver News. To extract nouns with practical meaning, the Okt morphological analysis of the KoNLPy modulein Python 3.9 was employed. Semantic network analysis was conducted to validate degree centrality, betweennesscentrality, and eigenvector centrality in order to understand the centrality and connectivity of significant keywords. The datawas visualized using Gephi 0.9.2 by performing CONCOR analysis to generate clusters. Results: The keywords with the highest degree centrality were agro-healing, followed by healing, care farm, vitality, RDA,citizens, and rural tourism. Agro-healing, Healing, stress, urban, disabilities, care farm, dementia, and rural area werehighest in terms of betweenness centrality. The eigenvector centrality was highest in agro-healing, followed by vitality,healing, care farm, and effect. As a result of the CONCOR analysis, four clusters were identified: ‘agro-healing characteristics’,‘agro-healing resources’, ‘agro-healing activities’, and ‘agro-healing target and effect’. Conclusion: According to the findings, social expectations and need for agro-healing to improve public health became asignificant part of the discourses. This research is expected to help determine future research and policy directions, as the vitalityof agro-healing continues to provide national welfare services and seek sustainable growth in agricultural and rural areas.

Analysis of News Articles on Urban Agriculture using Text Mining from 2012 to 2021

박유민,신용욱 인간식물환경학회 2023 인간식물환경학회지 Vol.26 No.2

Background and objective: Urbanization and reckless development have caused numerous problems, and urban agriculturewith various functions is getting attention as a countermeasure. The purpose of this study is to provide basic data forrevitalizing related research and setting effective policy directions by analyzing online articles on urban agriculture from2012 to 2021. Methods: A total of 15,336 online news articles on urban agriculture were collected from January 1, 2012 to December 31,2021. For more detailed analysis, the time period was divided by 5 years. Next, nouns were tokenized through morphologicalanalysis, and the main keywords were confirmed by simple frequency analysis and TF-IDF weighting analysis. Followingthat, LDA topic modeling was conducted to generate topics and words for each period. Python 3.9.5 was applied to run theabove analysis. Results: As a result of the analysis, there were four topics in the 1st period and six topics in the 2nd period. Summarizingthe topics over time, it was found that urban agriculture is expanding not only to social and cultural areas but also to diverseareas such as welfare and the environment. In addition, as the role of urban agriculture and the demand for servicesexpanded, various education courses and programs were activated, including the implementation of a national professionalqualification system, expert training courses, and cultivation technology programs. Conclusion: Based on the findings, urban agriculture is expected to be able to expand into various areas that takemultidisciplinary values into account and create various convergence services that follow the trend of the times.

Analysis of Importance of and Satisfaction with the Values and Major Achievements of Urban Agriculture

박유민,신용욱 인간식물환경학회 2023 인간식물환경학회지 Vol.26 No.6

Background and objective: Urban areas face various challenges due to overcrowding and unsustainable development. Asa potential solution, urban agriculture is gaining popularity. This study aims to provide basic data for improving theawareness and promoting urban agriculture. This is achieved by conducting an importance-performance analysis (IPA) onthe values and major achievements of urban agriculture. The analysis was conducted on experts involved in the formulationand implementation of urban agricultural policies and systems. Methods: For the final objective, 104 responses were analyzed using SPSS Statistics 25.0 (IBM Corp., USA). Reliability andfrequency were analyzed to ensure consistency of the survey tool and understand the demographic characteristics ofrespondents. Descriptive statistics, paired sample t-tests, and IPA matrix analysis were conducted to empirically analyzethe importance-satisfaction on values and major achievements of urban agriculture. Results: Both the importance of and satisfaction with the values of urban agriculture were highest in health functions,followed by social-cultural functions, environmental-ecological functions, and economic functions. In particular, it wasfound that awareness of health functions was high while that of economic functions was low, indicating that gradual effortswere needed to strengthen them. Next, for major achievements in urban agriculture, it was recommended to maintain andstrengthen education and publicity, gradually improve networks, and manage specialized models with minimal concentrationrather than excessive focus. Conclusion: The findings of this study, which explore expert perceptions toward values and major achievements of urbanagriculture, serve as a foundation for strategic planning to expand and advance urban agriculture. They offer valuableinsights for policymakers and stakeholders seeking to promote sustainable urban development through effective urbanagricultural policies and systems.

Synthesis and Properties of poly(dioxaborolane)s containing perfluorocyclobutane (PFCB) for low dielectric materials

박유민,김병각,박노균,김용석,홍성권,원종찬 한국고분자학회 2012 한국고분자학회 학술대회 연구논문 초록집 Vol.2012 No.10

공간보간법(Kriging)과 계층적 의사결정 과정(AHP)을 이용한 농업입지 분석

박유민,김영호 한국지도학회 2011 한국지도학회지 Vol.11 No.2

세계화의 흐름에 따라 농업공간이 전통적 사회공간에서 국제적 경제공간으로 탈바꿈하고 있음에도 불구하고 국내의 농업 입지에 관한 계량적 연구는 매우 제한적으로 이루어져왔다. 특히, 미래의 시장성이 기대되는 작물인 복분자는 곡물대체 상업작물로서 지역적 특화에 성공하였다. 하지만, 농업 클러스터로서 복분자에 대한 자연·인문 환경을 고려한 입지연구는 현재까지 진행되지 못했으며, 일반적인 농산업 클러스터 입지 연구 조차도 부족한 실정이다. 따라서 본 연구에서는 농업입지 연구의 특성과 한국의 농업입지에 관한 기존의 선행연구를 검토하고 경상도 지역에서 복분자 클러스터가 입지할 수 있는 최적지를 제시하고자 한다. 이를 위해 공간통계기법인 Kriging을 이용하여 공간데이터를 구축하였으며, 다기준 분석법(Multi-Criteria Analysis)의 하나인 Analytic Hierarchy Process(AHP) 기법을 이용하여 복분자 클러스터 입지 요인들의 중요도에 따른 가중치를 산출한 후 최적의 입지를 도출하였다. 그 결과, 경상북도 남서쪽 지역, 경상남도의 서쪽지역과 중앙부 지역, 남쪽 해안가 지역 등이 복분자 클러스터의 최적지로 나타났다. 이러한 연구 결과는 경상도 내 복분자의 지역적 특화에 대해 실질적인 활용 가치를 지니며, 관련 담당자나 농업인에게 유용한 정보를 제공해 줄 것으로 기대된다. 또한 공간분석 방법을 적용한 농업의 최적 입지모델을 제시한다. The importance of quantitative spatial location analysis in agriculture became increased, as traditional agricultural society has been transformed into international market oriented economic society in the process of globalization. However, there are not many geographical studies about agricultural location analysis in Korea. As a case study about agricultural location analysis, this study investigates Korean wild berry, which has recently been considered as both market oriented and grain alternative agricultural product. Korean wild berry has been successful, in limited scale, as a regionally specific griculture product. However, there has been no study about location analysis about Korean wild berry considering natural and human environments for the agriculture. Therefore, this study investigates to provide optimal location for Korean wild berry agriculture in Gyungsang province. Meanwhile, this study overviews previous Korean literature about agriculture location. Kriging and Analytic Hierarchy Process (AHP) are applied for data management and spatial weight generation for Multi-Criteria analysis. The result shows that South-Eastern, Western, Southern areas in Gyungsang province are optimal locations for the wild berry agriculture. This study presents practical importance for agricultural planning in Gyungsang province. In addition, this is meaningful to provide spatial quantitative modeling application in agriculture location.

수도권과 부산의 운동사 인식 및 일반현황 비교 분석

박유민,설동일,김정은,김민상,김영준 대한운동사협회 2006 대한운동사협회 운동사대회자료집 Vol.2006 No.-

논문 : 지구과학 교육과정의 새로운 방향 모색 ; 포스터 발표 : 지구과학내용 분야 ; 위성관측(MODIS)에서 유도된 수도권 지역의 대류권 오존 정보 및 수치실험

박유민,유정문 한국지구과학회 2005 지구과학 교육심포지엄 및 춘계학술발표회 Vol.2005 No.-