• 제목/요약/키워드: (s,S)-inventory Control

검색결과 314건 처리시간 0.03초

배관 체계 자율 복구 알고리즘 비교, 분석 및 고찰 (Examination on Autonomous Recovery Algorithm of Piping System)

  • 양대원;이정훈;신윤호
    • 한국안전학회지
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    • 제36권4호
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    • pp.1-11
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    • 2021
  • Piping systems comprising pumps and valves are essential in the power plant, oil, and defense industry. Their purpose includes a stable supply of the working fluid or ensuring the target system's safe operation. However, piping system accidents due to leakage of toxic substances, explosions, and natural disasters are prevalent In addition, with the limited maintenance personnel, it becomes difficult to detect, isolate, and reconfigure the damage of the piping system and recover the unaffected area. An autonomous recovery piping system can play a vital role under such circumstances. The autonomous recovery algorithms for the piping system can be divided into low-pressure control algorithms, hydraulic resistance control algorithms, and flow inventory control algorithms. All three methods include autonomous opening/closing logic to isolate damaged areas and recovery the unaffected area of piping systems. However, because each algorithm has its strength and weakness, appropriate application considering the overall design, vital components, and operating conditions is crucial. In this regard, preliminary research on algorithm's working principle, its design procedures, and expected damage scenarios should be accomplished. This study examines the characteristics of algorithms, the design procedure, and working logic. Advantages and disadvantages are also analyzed through simulation results for a simplified piping system.

아동의 심리사회적인 발달과 또래 괴롭힘의 가해·피해·친사회적 행동과의 횡·종단적인 관계 (Concurrent and Prospective Relationships between Children's Psychosocial Development and Bullying, Victimization, and Prosocial Behavior)

  • 심희옥
    • 아동학회지
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    • 제23권3호
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    • pp.1-15
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    • 2002
  • The subjects of this study were 4th to 6th grade children and instruments were the Teenage Inventory of Social Skills, the Internal-External Control Scale, the Self-Esteem Scale, and the Peer Relations Questionnaire. In the concurrent study, children lower in social skills and in self-esteem and external in locus of control reported more bullying and victimization. Children higher in social skills and in self-esteem and internal in locus of control reported more prosocial behavior. In the prospective study, children lower in social skills were more involved in bullying and victimization. Children higher in social skills reported more prosocial behavior. The effects of locus of control and self-esteem on peer relations diminished over time. However, social skills had a significant influence on bullying, victimization and prosocial behavior up to two years later. Children lower in psychosocial development were more vulnerable to peer victimization.

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'분노의 5단계 모델'관점의 영화 <남산의 부장들> 서사와 주인공의 거사 결행 기제 (Five-stage Anger Model Approach to Narrative and Protagonist's Revolt Action Mechanism in the Movie, "The Man Standing Next")

  • 김정섭
    • 한국엔터테인먼트산업학회논문지
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    • 제14권3호
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    • pp.285-294
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    • 2020
  • 영화 <남산의 부장들>은 다른 10.26 사건 소재의 콘텐츠와 달리 대립되는 인물 간의 치열한 심리 대결을 표방한 연극적 성격이 짙은 '분노 캐릭터' 영화라는 점에 착안해 본 연구에서는 라코프와 코브시스(Lakoff & Kövecses) 등이 제시한 '분노의 5단계 모델'을 적용해 장면을 단위로 설정해 서사구조를 내용 분석하였다. 그 결과 이 영화는 심리학의 분노 5단계 이론을 잘 반영해 주인공의 분노 결행에 대한 인과성과 개연성을 한층 높인 것으로 나타났다. 특히 분노조절(25분)에 가장 긴 시간을 할애해 응징·보복의 동기를 정당화한 반면 통제력 상실(14분)에 가장 짧은 시간을 부여해 응징 행동의 긴박감을 극대화 하고자한 것으로 분석되었다. 각 단계에서 분노를 유발하는 기폭제 역할은 무시, 모멸, 오만, 과시, 놀림, 조롱, 무단 개입, 수군거림, 비아냥, 말 가로채기 언행으로 각 단계마다 2~6회씩 배치되었다. 특히 '경호실장'역의 경우 조롱 발언이, '박통'역의 경우 친구도 죽인 무도한 인간이란 극심한 모멸감을 야기하는 발언이 주인공으로 하여금 복수를 실행하도록 하는 결정적인 '분노 방아쇠'로 작용하였다. 결론적으로 이 영화는 서사구조가 분노이론을 정교하게 따랐다. '정치극'이라서 서사의 전개에서 분노의 공적(公的) 사유를 많이 설정하는 것이 일반적인데도 분노유발목록(PI)과 24%나 일치할 정도로 관객들이 흔히 겪는 일상의 분노사례를 적잖이 반영한 것으로 확인되었다. 이상과 같이 제작진이 이 영화에 심리학의 분노이론을 정교하게 반영하고 분노의 공적·사적 동인(動因)을 균형 있게 안배한 것은 분위기가 무겁고 낯설기 마련인 정치영화에 대한 관객들의 이해도와 흡인력을 높이려는 소통강화 의도에서 비롯된 것이라 평가된다.

딥러닝 기법을 활용한 가구 부자재 주문 수요예측 (Demand Prediction of Furniture Component Order Using Deep Learning Techniques)

  • 김재성;양여진;오민지;이성웅;권순동;조완섭
    • 한국빅데이터학회지
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    • 제5권2호
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    • pp.111-120
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    • 2020
  • 최근 코로나 19 사태로 인한 경기 위축에도 불구하고, 재택근무 증가로 집에 거주하는 시간이 늘어나면서 주거환경에 관한 관심이 커지고 있으며, 이에 따라 리모델링에 대한 수요가 증가하고 있다. 또한, 정부의 부동산 정책 또한 규제 정책에서 주택공급 확대 방향으로 전환하면서 이에 따른 인테리어, 가구업계의 매출에도 가시적인 영향이 있을 것으로 예상한다. 정확한 수요예측은 재고 관리와 직결되는 문제로 정확한 수요예측은 불필요한 재고를 보유할 필요가 없어 과잉생산으로 인한 물류, 재고 비용을 줄여줄 수 있다. 하지만 정확한 수요를 예측하기 위해서는 지속적으로 변화하는 경제동향, 시장동향, 사회적 이슈등 외부요인을 모두 고려하여 분석해야 하기 때문에 어려운 문제이다. 본연구에서는 가구 부자재를 생산하고 있는 제조업체에 대하여 신뢰성 있는 결과 도출을 위해 인공지능기반 시계열 분석 방법으로, LSTM 모형, 1D-CNN 모형을 비교 분석하였다.

무조건적 자기수용 증진 프로그램의 개발과 적용 (Designing and Application of the Unconditional Self-Acceptance Development Program)

  • 김사라형선
    • 가정과삶의질연구
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    • 제23권5호
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    • pp.161-170
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    • 2005
  • The purpose of this study was to devise an Unconditional Self-Acceptance Development Program and examine the efficacy of the program on alleviating children's depression and improving psychological wellbeing. In order to test the efficacy of the developed program, Multidimensional Perfectionism Scale (MPS: Hewitt & Flett, 1991), Unconditional Self-Acceptance Questionnaire (USAQ; Chamberalain & Haaga, 2001), Children's Depression Inventory (CDI; Kovacs & Beck, 1977), and Psychological Well-Being Scale(PWBS: Seng Hee Lee, 1999) were used for pre- and post tests. The test results were analyzed using t-tests. Twelve elementary school students suffering from depression participated in eight sessions of the Unconditional Self-Acceptance Development Program, and then were compared with 13 children in the control group who did not receive the treatment. The result was as follows: the treatment group showed statistically significant improvement in unconditional self- acceptance, alleviated level of depression, and increased psychological wellbeing, in comparison with the control group. The findings of this study suggest that unconditional self-acceptance development program should be adopted as a new therapy program for children's depression and psychological wellbeing.

침습적 처치에 대한 교육 프로그램이 입원환아 어머니의 불안 및 지지행위에 미치는 영향 (The Effects of Invasive Procedure Education Program on the Anxiety and Supportive Behavior of Mothers with Hospitalized Children)

  • 한진숙;문영숙
    • 부모자녀건강학회지
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    • 제9권2호
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    • pp.150-160
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    • 2006
  • Purpose: This study was to examine how an invasive procedures education program affected the anxiety and supportive behavior of mothers with hospitalized children, and to help provide an efficient to improve their maternal role performance by boosting their supportive behavior. Method: To evaluate their anxiety, Spilberger(1972)'s Anxiety Inventory that was translated by Kim Jeong-taek, et al.(1978) was employed, and Weon Dae-yeoung(1999)'s modified version of Melnyx(1994)'s Index of Parent Support During Instructive Procedure was utilized to assess their supportive behavior. The collected data were analyzed with SPSS program. Statistical data on real number and percentage were acquired, and $x^2$-test and t-test were conducted. Result: There was a more favorable change in the anxiety(trait anxiety and state anxiety) of the experimental group that participated in an invasive procedures education program(a mean of -0.14) than in that of the control group that didn't(a mean of 0.16). The experimental group(an average of 4..65) outstripped the control group(a mean of 3.42) in that regard. Conclusions: The invasive procedures education program that catered to the mothers with hospitalized children turned out to be effective in easing their anxiety and enhancing their supportive behavior.

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초기 성 학대 경험이 있는 여성 공황장애 환자의 임상적 특성 (Clinical Characteristics of Female Panic Disorder with Early Sexual Abuse History)

  • 김경민;김민경;이강수;최태규;이상혁
    • 생물정신의학
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    • 제23권4호
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    • pp.130-139
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    • 2016
  • Objectives The objective of this study is to investigate differences of clinical characteristics between a healthy female control group and female panic disorder (PD) patients with early sexual abuse history (PD+S) and without early sexual abuse history (PD-S). Methods We examined data from 83 patients diagnosed with PD and 20 healthy control subjects. We divided the patients with PD into PD+S (32 patients) and PD-S (51 patients) to compare demographic and clinical characteristics. The following instruments were applied: the Stress coping strategies, the Beck Depression Inventory (BDI), the Panic Disorder Severity Scale, the Anxiety Sensitivity Index-Revised (ASI-R), the Albany Panic and Phobia Questionnaire (APPQ) and the NEO-neuroticism. Results Compared to the PD-S, the PD+S group showed higher scores in neuroticism and the APPQ. And, in the PD+S group, the scores of neuroticism were correlated with the ASI-R and APPQ subscale scores and the APPQ total scores were associated with the scores of BDI. Conclusions This study shows that female PD+S patients have higher scores in neuroticism and the APPQ than the PD-S group, and these factors are associated with the panic-related symptoms severity. It emphasizes the need of specific strategies considering the childhood abuse history such as early sexual abuse in clinical approach among patients with PD.

당뇨병 환자에서 우울증상 및 불안증상과 혈당조절과의 연관성 (The Relationship of Anxiety Symptoms and Depressive Symptoms to Glycemic Control in Diabetic Patients)

  • 전병희;김현우;김희진;임명호;이석범;백기청;이경규
    • 정신신체의학
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    • 제16권2호
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    • pp.95-102
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    • 2008
  • 연구목적 : 당뇨병 환자들은 질환 자체에 대한 부담감과 혈당 관리를 위한 약물 및 식이요법과 운동 요법 등의 유지에 대한 부담감이 스트레스로 작용하고 있으며, 이러한 심리적 스트레스가 혈당조절에 악영향을 줄 수 있다. 당뇨병 환자들은 일반 인구에 비해 우울증 및 불안장애의 유병율이 높으며, 이러한 우울증과 불안장애의 증상은 또 다시 혈당조절에 부정적인 영향을 주게 된다. 이에 본 연구는 우울과 불안증상이 혈당조절에 어떤 영향을 미치는가를 알아보고자 하였다. 방법 : 단국대학교병원 내분비내과에서 외래통원치료 중인 30세 이상의 당뇨병 환자 65명을 대상으로 하여, 정맥 혈액채취로 당화혈색소(Hemoglobin A1c;이하 HbA1c) 수치를 얻었으며, 자가보고식 설문지인 Beck의 우울척도(Beck's Depression Inventory;이하 BDI) 및 Beck의 불안척도(Beck's Anxiety Inventory;이하 BAI)를 시행하여 통계분석을 하였다. 결과 : 65명의 당뇨병 환자 중 경한 우울증상을 보인 환자는 27명(41.5%), 중등도 이상의 우울증상을 보인 환자는 6명으로(9.23%) 일반 인구에 비해 높은 빈도를 보였다. HbA1c와 BDI간에는 유의한 상관관계를 보이지 않았으나 HbA1c와 BAI간에 유의한 상관관계를 보였으며(R=0.567, P<0.001), 다중회귀분석에서 BAI는 혈당조절에 영향을 미치고 있었으나($\beta=0.551$, T=4.912, P<0.001) BDI와 체질량지수, 당뇨병 합병증의 수 및 유병기간은 HbA1c에 유의한 영향을 미치지 않았다. 결론 : 본 연구에서는 일반 인구에 비해 우울증상을 보이는 당뇨병 환자의 빈도가 높았으며, 불안증상을 보이는 당뇨병 환자의 빈도는 높지 않았다. 당뇨병 환자에서 우울증상과 혈당조절간의 유의한 연관성을 보이지 않았으나 불안증상과 혈당조절 간에는 유의한 연관성을 보였다. 결론적으로 우울증상은 혈당조절에 별 영향을 미치지 않으나 불안증상은 혈당조절에 영향을 미치는 것으로 나타났다.

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문학작품을 통한 읽기 지도 전략이 초등학교 아동의 문식성에 미치는 효과 (The Effects of Literature-based Reading Instruction on Children's Literacy)

  • 김순덕;장연집
    • 아동학회지
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    • 제21권4호
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    • pp.243-257
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    • 2000
  • This empirical test of the efficacy of the literature-based reading instruction was conducted with 63(31 male and 32 female) 2nd grade elementary school children. Subjects in the experimental group had 40-45 minutes literature-based reading instruction twice weekly; those in the control group had only basic text reading. Procedures included a pilot study, pre-test, experimental period, and post-test. Research instruments included the Basic Learning Skill Test(Park et al., 1988), the Qualitative Reading Inventory(Leslie & Caldwell, 1990), and the Elementary Reading Attitude Survey(Mckenna & Kear, 1990). Data were graded and scored by each research question and then analyzed with a t-test of differences between the groups. The experimental group showed higher word recognition, text comprehension, and story grammar strategies than the control group. They also showed more improvement in each of these categories than the control group.

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음악청취가 학업스트레스와 우울증에 미치는 영향 (Effect of Music Listening on Academic Stress and Depression)

  • 장철;신현석
    • 대한통합의학회지
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    • 제4권3호
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    • pp.31-37
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    • 2016
  • Purpose : The purpose of this study was to conduct a music listening program and investigate its effects on depression and academic stress. Method : 30 male and female at K university located in Busan Metropolitan City were selected as subject of this study and a half of them was experimental group, other were control group. An academic stress tester formed by modifying and supplementing sentences and vocabularies of the questionnaire developed by Oh, Mi Hyang and Cheon, Seong Mun (1994) to help understanding of students was used with Beck Depression Inventory (BDI) by Beck(1967), both before and after conductance of music listening program. Result : First of all, In the Academic stress was no difference between each group and there was no difference in effect according to the comparison period. Second, Score of depression in Experimental group was decreased after application of music listening program than control group's. Third, Score of depression in Experimental group was lower than control group's, depending on period. Conclusion : Put the results of this research together, music listening program dosen't affect the academic stress. But this program deceased the depression. In further study, it will be required to subdivided for academic stress and depression study from evaluation of the several times and apply a variety of diseases.