전기-유압 유사성을 활용한 단방향 섬유 강화 복합재료의 수직 방향 투수 계수 예측 알고리즘

배상윤,조현성,김성수,Bae, Sang-Yun,Jo, Hyeonseong,Kim, Seong-Su 한국복합재료학회 2022 Composites research Vol.35 No.5

본 연구에서는 복합재료 제조 공정 과정 중 수지의 유동 저항성을 대변하는 인자인 투수 계수를 예측하는 알고리즘을 개발하였다. 단방향 연속 섬유 복합재료 내부에서 섬유와 수직인 방향 투수 계수의 정확한 예측을 위해 대표 체적 요소의 단면 형상을 고려하였다. 섬유의 유체 유동 저항성을 정량화하기 위한 인지로 섬유 간 간격이 사용되었고, 등가 길이는 섬유 배열에 따른 수지의 유로 변화를 나타내는 인자로 사용되었다. 전기-유압 유사성을 접목하여 투수 계수 예측 알고리즘을 개발하고 그 타당성을 확인하였다. 알고리즘은 Matlab과 Python으로 구성되고, 타당성 검증을 위해 FLUENT를 통해 예측된 투수 계수와 비교하였다. 알고리즘과 수치 해석을 통해 얻은 투수 계수가 거의 일치함을 확인하여 알고리즘을 검증하였으며, 소요 시간은 수치 해석 대비 약 1/450로 감소하였다.

대학생의 출산의도와 관련변수

배상윤(Sang-Yun Bae) 한국보건복지학회 2012 보건과 복지 Vol.14 No.-

This study researches variables related to the childbirth intention of college students. The general ideal number of children of the college students is 2.4±0.8 persons and the average hope number of children appears 2.3±1.0 persons. In general variables, the higher subjective economic level is and the happier the family members are, the intention appears high. Also, in the case that the father has a job, the childbirth intention is high. In the variables related to study stress, the more the major study stress is, the higher the intention is. The childbirth hope of each average grade appears that grades C, A and B are higher than a grade D. The variables related to employment stress and the recognition about child-care environment and birth policy do not show significant differences from the childbirth intention. In the variables of marriage and hope of having children, the case of wanting to marry, the case of thinking of need of children, the case that general ideal number of children is more than 2, the case that the number of children they hope is more than 2, show that the intention of childbirth is high. The result of this study investigates the variables that influence on low birth rate and can be used for the basic data to understand the national crisis that the society with low birth rate can cause. In addition, it can be useful for the development and implement of public health education to increase the birthrate of college students and for the establishment of effective policy to encourage childbirth.

일부 중학생들의 자살생각 및 그의 관련요인

배상윤(Bae, Sang-Yun),윤현숙(Yoon, Hyun-Suk),조영채(Cho, Young-Chae) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.1

본 연구는 중학생들의 자살생각 및 그의 관련 요인간의 관련성을 파악하여 자살생각에 유의하게 영향을 미치는 요인들을 규명하고자 시도하였다. 조사대상은 경인 지역의 4개 중학교에서 임의로 선정된 재학생 975명으로 하였으며, 자료 수집은 2013년 5월 1일부터 6월 30일까지의 기간 동안에 무기명 자기기입식 설문지(self-administrated questionnaire)를 통해 이루어졌다. 연구결과, 자살생각이 높은 위험 군으로는 여성 군, 흡연경험 군, 음주경험 군, 비만하다고 생각하는 군, 식사를 규칙적으로 하지 않는 군, 주관적 건강상태가 좋지 않다고 생각하는 군, 가정 분위기가 좋지 않은 군, 가정생활 만족도가 낮은 군, 학년이 낮은 군, 친구와 관계가 좋지 않은 군, 학교폭력을 경험한 군, 학교생활 만족도가 낮은 군, 절망감 수준이 높은 군, 사회심리적스트레스 수준이 높은 군, 우울수준이 높은 군이 선정되었다. 특히 이들 변수 중 절망감 수준은 자살생각에 크게 영향을 미치는 변수로 지적되었다. This study was performed to determine the factors related to suicide ideation among some middle school students. A self-administered questionnaires survey was administered to 975 middle school students in Gyeongin area during the period from May 1st to June 30th, 2013. As a result, the suicide ideation of respondents turned out to be significantly higher in the following groups: females, experience of smoking, experience of alcohol drinking, of which the self-recognized body type was fatty, with out regular eating, poor subjective health status, poor home atmosphere, low family life satisfaction, lower school grade, poor relationship with friends, school violence experienced, school life dissatisfaction, severe hopelessness, severe distress, and depression. In particular, the factors related to hopelessness are strongly correlated with the suicide ideation.

대안설비를 갖는 Job Shop 작업계획의 새로운 할당규칙

배상윤(Sang Yun Bae) 대한설비관리학회 2001 대한설비관리학회지 Vol.6 No.2

N/A We present the new dispatching rules of job shop scheduling with alternative machines in order to improve the schedule performance measures, which are mean completion time, mean tardiness, mean work in process and mean shop utilization. Four new dispatching rules and eighteen existing dispatching rules are examined in those performance measures of job shop scheduling at the three levels of the probability that operations can have alternative machines. Through computer experiments, we explore the best dispatching rules and the improvement of solution under those levels. These results provide guidance for the practitioners to choose dispatching rules and for the researchers to develop new rules for job shop scheduling with alternative

설비유연성의 증대로 불균형설비작업부하를 갖는 작업계획 성능 향상

배상윤(Sang Yun Bae) 대한설비관리학회 1999 대한설비관리학회지 Vol.4 No.3

N/A The purpose of this paper is to present the method that increase machine flexibility in order to improve the performance of scheduling with unbalanced machine workloads. The computer experiment shows that the schedule performance related to mean flow time

일부 대학생의 체질량지수와 체중인식

배상윤(Sang Yun, Bae) 한국보건복지학회 2011 보건과 복지 Vol.13 No.-

In order to investigate body mass index and recognizing of body weight of college students, we collected the data of 182 college students in Jeol labuk-do area for one month in May, 2011 and analyzed them. Followings are the results therefrom. Results. (1) When hours of sleep a day is over 7 hours, the distributions of normal weight group,· non smokers group and regular ly exercising group were high in the rate of under weight, whereas the distributions of overweight and obesity group were low. (2) The male obesity group tended to recognize themselves as overweight and the female under weight group tended to recognize themselves as normal weight. Male students were not satisfied with their under weight and obesity, but female students did not show any difference from satisfactions about their weight by BMI. (3) While the male overweight group tended to wrongly recognize themselves as a normal body type, the female under weight group tended to wrongly recognize themselves as a normal body type. Among male groups, the dissatisfaction of the under weight group and the obesity group was high, but female students did not show significant difference in BMI groups, which can be guessed that they are not satisfied with their body type regardless of weight. This result shows male students have problems of overweight and female students have those of under weight. These college students are not satisfied with their weight and body types regardless of their 8MI groups. We need to develop the data for correct health education about weight and body type recognition for college students.

설비 가동률 향상을 위한 Job Shop 일정계획

배상윤(Sang Yun Bae),김영균(Young Gyun Kim),유정모(Jeong Mo Yoo) 대한설비관리학회 1996 대한설비관리학회지 Vol.1 No.1

N/A In this paper, we consider the job shop scheduling with the performance measure related to the shop utilization such as the mean shop utilization and the mean absolute deviation of machine utilization. We consider realistic situations such as the producti

추가자원제약을 갖는 Job Shop 작업계획의 성능 비교

배상윤(Sang-Yun Bae) 한국산업경영시스템학회 2005 한국산업경영시스템학회지 Vol.28 No.1

This study presents the new dispatching rules of job shop scheduling with auxiliary resource constraint to improve the schedule performance measures related to completion time and due dates. The proposed dispatching rules consider the information of total work remaining and machine utilization to decrease mean flowtime and mean tardiness. The results of computer experiments show that those schedule performances are significantly improved by using the new dispatching rules. The results provide guidance for the researchers and practitioners of auxiliary resource constrained job shop scheduling to decrease mean flowtime and mean tardiness.

중소기업 정보화의 실제적 목표와 접근

배상윤(Sang-Yun Bae) 한국산업경영시스템학회 2005 한국산업경영시스템학회지 Vol.28 No.4

This paper presents the practical goals and approaches to drive forward informatization of small and medium enterprises(SMES). The presented goals such as productivity, duedate, production cost, and quality measurements are used effectively in the previous diagnosis and the post evaluation for the business of the informatization. As the practical approaches to improve these goals. This study considers the importance of balancing, sequencing, and scheduling. These methods ease the congestion of production sites of SMES with insufficient competitiveness and can contribute to the promotion of informatization that improves productivity and cuts down the cost of production effectively.

Job Shop 일정계획의 성능 향상을 위한 할당규칙의 정보

배상윤(Sang-Yun Bae) 한국산업경영시스템학회 2006 한국산업경영시스템학회지 Vol.29 No.4

  This study presents the new dispatching rules for improving performance measures of job shop scheduling related to completion time and due dates. The proposed dispatching rule considers information, which includes the comparison value of job workload, work remaining, operation time, and operation due dates. Through computer experiments, the performance of the new dispatching rules is compared and analyzed with the existing rules. The results provide a guidance for the researchers to develop new dispatching rules and for practitioners to choose rules of job shop scheduling.