새로운 예배 전주곡 소개

박수원 한국교회음악학회 2006 한국교회음악학회지 Vol.2006 No.3

적층제조된 알루미늄 합금의 공정변수 및 합금조성이 상대밀도와 기계적 특성에 미치는 영향도 분석

박수원,여지윤,한송윤,최현주 한국분말재료학회 2023 한국분말재료학회지 (KPMI) Vol.30 No.3

Metal additive manufacturing (AM) has transformed conventional manufacturing processes by offering unprecedented opportunities for design innovation, reduced lead times, and cost-effective production. Aluminum alloy, a material used in metal 3D printing, is a representative lightweight structural material known for its high specific strength and corrosion resistance. Consequently, there is an increasing demand for 3D printed aluminum alloy components across industries, including aerospace, transportation, and consumer goods. To meet this demand, research on alloys and process conditions that satisfy the specific requirement of each industry is necessary. However, 3D printing processes exhibit different behaviors of alloy elements owing to rapid thermal dynamics, making it challenging to predict the microstructure and properties. In this study, we gathered published data on the relationship between alloy composition, processing conditions, and properties. Furthermore, we conducted a sensitivity analysis on the effects of the process variables on the density and hardness of aluminum alloys used in additive manufacturing.

악하부에 발생한 Progressive Transformation of Germinal Centers: 증례보고

박수원,장수미,김동율,손장호,조영철,성일용,Park, Su-Won,Jang, Soo-Mi,Kim, Dong-Yul,Son, Jang-Ho,Cho, Yeong-Cheol,Sung, Iel-Yong 대한악안면성형재건외과학회 2011 Maxillofacial Plastic Reconstructive Surgery Vol.33 No.4

Progressive transformation of germinal centers (PTGC) is mostly a disease of young adults and it presents as unexplained, asymptomatic, localized or generalized lymphadenopathy that is usually persistent or recurrent over a period of many years. PTGCs are larger than regular germinal centers and they contain a variable proportion of small mantle zone lymphocytes and so they become progressively transformed and they may result in the loss of clear demarcation between them and the mantle zone. PTGC may resemble the nodules of nodular lymphocyte predominant Hodgkin's disease (NLPHD) and it may be mistaken for NLPHD. Histological and immunohistochemical studies are helpful in differentiating these diseases. Because of the relatively frequent recurrences of PTGC, follow-up and repeat biopsy are indicated. Although PTGC is not considered to be a premalignant condition, PTGC may occur prior to, concurrent with or following NLPHD. This emphasizes the need for ongoing follow-up and repeat biopsy. Although PTGC is reported in 3.5% to 10% of the cases of chronic nonspecific lymphadenopathy, oral & maxillofacial surgeons are not widely aware of this condition and its clinical implications. Herein, we present a case of PTGC. A 24-year-old male without any history of immunodeficiency or autoimmune disease was admitted to the Department of Oral & Maxillofacial surgery at Ulsan University Hospital for evaluation of a right submandibular swelling. He had another mass on the right thigh that was noticed about 1 year ago. The submandibular lesion was completely resected and biopsied. The histological findings and immunohistochemical stains (CD3, CD15, CD20, CD30, CD57, BCL-2, EMA) were consistent with PTGC. He was followed up without any other complaints for 9 months.

CDMA 셀룰러 시스템에서의 소프트 핸드오프 모델링 ( Modeling of Soft Handoff in the CDMA Cellular System )

박수원,조호신,성단근,손창수 한국통신학회 1995 한국통신학회 학술대회논문집 Vol.14 No.1

질의응답 온라인플랫폼 빅데이터를 통한 학교전담경찰관 역할 관련 텍스트분석

박수원,최병호 경찰대학 치안정책연구소 2022 치안정책연구 Vol.36 No.2

본 연구는 학교전담경찰관이 온라인 질의응답 플랫폼에서 어떠한 맥락 속에서 논의되는지를 탐색적으로 분석함으로써, 학교전담경찰관에게 요구되는 역할이 무엇인지를 추론하고자 하였다. 이를 위해 익명으로 질문을 올리고 답을 할 수 있는 네이버 지식in의 텍스트 자료 2,837건을 분석하였다. 빈도분석과 유사도분석, 네트워크분석 및 토픽모델링을 통해 텍스트마이닝을 실시한 결과, 학교전담경찰관은 피해자가 도움을 요청할 수 있는 ‘방법’의 일환으로 가장 많이 논의되고 있었으며 학교폭력위원회와 같이 공권력을 지닌 ‘전담기구’와 유사한 의미로 논의되는 것으로 확인되었다. 토픽모델링을 통해 논의의 주제 분석을 실시한 결과 ‘도움 및 상담’ 역할과 ‘법 집행’ 역할로 구분되는 것으로 나타났다. 본 연구는 실제 대중이 자연스럽게 형성한 데이터를 기반으로 논의한 맥락을 분석하여 이들이 필요로 하는 학교전담경찰관의 역할을 경험적으로 확인한 기초연구라는 점에서 의의를 지닌다.

Analysis of ethanol in soy sauce using electronic nose for halal food certification

박수원,이수진,심유신,최진영,박은영,노봉수 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.2

The purpose of this study was to analyze ethanol content in soy sauce using mass spectrometry (MS) with electronic nose (e-nose) to determine if MS e-nose can replace gas chromatographic analysis for halal certification. Gas chromatography–flame ionization detector (GCFID), the standard method of ethanol content, was used to analyze 24 different kinds of soy sauce. Ethanol was detected from 13 soy sauce samples in the concentration range of 0.0004–1.7wt%. The MS e-nose data were analyzed by discriminant function analysis (DFA). Based on an addition method, the results were more than 96.6% accurate when the ethanol concentrations were greater than 0.5%. A high correlation between the first score of the DFA plot and the ethanol concentration was observed. Thus, mass spectrometry based on e-nose is an efficient method for determining ethanol as a primary screening tool for halal certification.

아동권리 기반 다양성 교육 프로그램의 효과

박수원,이귀옥,박현선 한국다문화교육학회 2023 다문화교육연구 Vol.16 No.1

This study investigated the changes in perception of children's rights, diversity (general, family, and gender stereotypes), and anti-discrimination (race and disability) after conducting children's rights-based diversity education for elementary school students. Of 210 students, 106 who participated in the program were from the experimental group and 104 who did not participate in the program were from the control group. After controlling the student's gender, age, multicultural family status, local child center experience, and prior experience of child rights education, repeated measure analysis of covariance showed that the interactions between the pre- and post- scores changed with the perception of children’s rights (Wilk’s lambda=0.933, p<.001) and gender stereotypes (Wilk’s lambda=0.978, p=.034), and were significant. In addition, the paired t test showed that only the experimental group showed significant changes in the perception of children's rights (t=5.807, p<.001), general diversity (t=3.095, p=.003), family diversity (t=2.468, p=.015), and anti-discrimination on race (t=2.282, p=.024). The results of this study show that rights-based diversity education played an influential role in leading positive changes in students' perception of children's rights, diversity, and anti-discrimination perception. Therefore, the program is suitable for application to the diversity education field and will contribute to the flexible and effective implementation of multicultural education by educators. 본 연구에서는 초등학생을 대상으로 아동권리 기반 다양성 교육 프로그램을 진행하고 이 후 학생들의 아동권리 인식, 다양성 인식(일반, 가족, 성고정관념) 및 반차별(인종, 장애) 의 식에 어떠한 변화를 가져오는지를 확인하였다. 총 210명의 학생이 연구에 참여하였으며, 이 중 106명은 프로그램에 참여한 실험군이었고, 104명은 프로그램에 참여하지 않은 비교군이 었다. 실험군과 비교군 간 사전 사후 점수 차이를 반복측정 공분산분석을 통해 확인한 결 과, 학생의 성별, 나이, 다문화가정 여부, 센터경험 및 아동권리 교육 사전 경험을 통제하 고, 아동권리 인식(Wilk’s lambda=0.933, p < .001)과 성고정관념(Wilk’s lambda=0.978, p = .034)의 점수변화와 집단(실험군, 비교군) 간 상호작용이 유의한 것으로 나타났다. 추가적으 로 대응표본 t 검증을 통해 각 집단에서 사전 사후 점수 변화를 확인한 결과, 실험군에서만 아동권리 인식(t=5.807, p < .001)과 다양성 일반(t=3.095, p=.003), 가족 다양성(t=2.468, p=.015), 인종에 대한 반차별 의식(t=2.282, p=.024)이 유의한 증가를 보였다. 이러한 결과는 아동권리 기반 다양성 교육 프로그램이 학생들의 아동권리 인식과 다양성 인식, 반차별 의 식을 높여 긍정적 변화를 이끄는 데 효과적으로 역할할 수 있음을 보여준다. 따라서 본 프 로그램은 현장에 적용하기에 적합하며, 교육자들이 유연하고 효과적으로 다문화 교육을 시 행하는데 기여할 수 있을 것이다.

한국에서 고양이의 FeLV와 FIV 감염 유병율

박수원,이두형,고영환,홍지현,이창우 한국임상수의학회 2005 한국임상수의학회지 Vol.22 No.1

Seroprevalence of feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV) infections were surveyed in 875 domestic cats derived from 4 major cities and 4 provinces in Korea. Of those tested, 715 were healthy and 160 were sick. FeLV and FIV were tested with AGEN FeLV-FIV, a commercial combo test kit. Ten out of 875 cats (1.1%) were seropositive for FeLV and none out of 875 cats (0%) was positive for FIV, respectively. The positive rates for FeLV were 3.8% in sick cats and 0.6% in healthy cats. The cats at the age of more than 1 year showed higher incidence rates than the younger ones. There were no significant relationships either with the environment or with the sex. The prevalence of seropositive FeLV was 0.7% in mixed cats and 1.6% in pedigree cats. With respect to the regional prevalence of the FeLV, the highest seroprevalence (9.5%) was found in Gyeongsang province.

중학생의 봉사활동 시간 및 친사회성, 자아존중감의 종단적 관계

박수원,김샛별 미래를 여는 청소년학회 2017 미래청소년학회지 Vol.14 No.1

Society has tried to enhance volunteering of adolescents. Therefore, it is critical to understand the current state of adolescents’ volunteering and examine the effects of volunteering participation on adolescents’ psychological characteristics. The present study investigated the reasons for participating in volunteer activities and identified the reciprocal relationships among volunteering time, prosociality, and self-esteem in middle school students. The data of 4,051 middle school students was sampled from the Gyeonggi Education Panel Study(GEPS), provided by the Gyeonggi Institute of Education. Frequency analysis suggested that more than 70% of students reported that they have participated in the volunteering for getting a score. Auto-regressive cross-lagged analysis revealed that there was no significant relationship between volunteering time and prosociality, but there was a significant relationship between volunteering time and self-esteem. These results indicated that volunteering time increases students’ prosociality mediated by participants’ self-esteem. Therefore, educators should encourage not only volunteering time itself, but also focus on developing prosociality through their intrapersonal changes (i.e., self-worth) while volunteering. 사회적으로 청소년의 봉사활동 참여를 높이려는 시도가 계속되고 있다. 이러한 상황에서 청소년의 봉사활동 실태를 파악하고 봉사활동 시간의 증가가 청소년에게 어떠한 영향을 미치는지를 이해할 필요가 있다. 본 연구에서는 경기교육종단연구 1~3차년도 데이터를 사용하여 중학생의 봉사활동 참여이유를 확인하고, 봉사활동 참여시간과 친사회성, 자아존중감의 상호 연관관계를 확인하고자 하였다. 빈도분석 결과 봉사점수를 위해 봉사활동에 참여한다는 응답이 3차년도 모두에서 70% 이상의 비율을 차지하고 있었다. 자기회귀교차지연 분석 결과, 봉사활동 시간은 친사회성과는 직접적인 연관을 가지지 않으나 자아존중감과는 상호관계를 가지는 것으로 나타났다. 이러한 연구결과는 봉사활동 시간을 높이는 것이 중학생의 친사회성을 직접적으로 높이는 것이 아니라 자아존중감과 같은 개인 내적변인의 변화를 매개로 친사회성을 증진시킨다는 것을 보여준다. 따라서 교육자들은 봉사활동 시간 자체뿐만 아니라 청소년이 봉사활동을 하며 겪는 내적 변화를 통한 친사회성의 함양에도 초점을 맞추어야 할 것이다.

Multi-feeder 3차원 적층제조 기반 조합실험을 활용한 알루미늄 합금탐색

박수원,송용욱,여지윤,한송윤,최현주 한국분말재료학회 2023 한국분말재료학회지 (KPMI) Vol.30 No.3

Aluminum alloys are widely utilized in diverse industries, such as automobiles, aerospace, and architecture, owing to their high specific strength and resistance to oxidation. However, to meet the increasing demands of the industry, it is necessary to design new aluminum alloys with excellent properties. Thus, a new method is required to efficiently test additively manufactured aluminum alloys with various compositions within a short period during the alloy design process. In this study, a combinatory approach using a direct energy deposition system for metal 3D printing process with a dual feeder was employed. Two types of aluminum alloy powders, namely Al6061 and Al-12Cu, were utilized for the combinatory test conducted through 3D printing. Twelve types of Al-Si-Cu-Mg alloys were manufactured during this combinatory test, and the relationship between their microstructures and properties was investigated.