• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2019년도 춘계학술발표대회
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• pp.464-466
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• 2019

CNN 은 합성곱 연산을 사용하는 인공신경망의 한 종류이다. 이러한 인공 신경망에서는 훈련 데이터에 대한 과도한 학습으로 인해 시험 데이터에 제대로 반응하지 못하는 오버피팅이 발생할 우려가 있다. 이를 해결하기 위해 DropOut 과 DropConnect 를 사용할 수 있다. 본 논문에서는 DropOut 과 DropConnect 를 통한 학습 정도를 실험을 통해서 비교해보고, 인공 신경망에서 이 방법의 효과를 살펴본다.

• 한국사회복지학
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• 제61권4호
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• pp.191-215
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• 2009

본 연구의 목적은 북한이탈 청소년의 학교중도탈락의 영향요인과 그 영향의 정도를 밝히고, 결과를 근거로 사회복지실천 개입전략과 정책적 제안을 마련하는 것이다. 성별, 학업성취역량 인식, 자아존중감, 학교 문화적응스트레스와 같은 개인내적 특성이 학교중도탈락의 주요 영향요인이며, 부모 양육의 질, 또래애착, 가족의 경제수준, 정착기간 등의 환경적 요인들은 유의한 영향을 미치지 않는 것으로 나타났다. 결론에서 본 연구가 갖는 이론적 기여, 실천 정책적 함의에 대하여 논의하였다.

• Journal of the Korean Data and Information Science Society
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• 제17권4호
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• pp.1053-1065
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• 2006

This paper proposes a method in one-way layouts for longitudinal data with informative drop-out. When dropouts are informative, that is, correlated with unobserved data and/or the previous observed data, the simple imputation methods such as 'last observation carried forward' (LOCF) methods would arise the bias of the testing models. The maximum likelihood procedure combined with a logit model for the drop-out process is proposed to test treatment effects for one factorial designs and compared with LOCF method in two examples.

• Tuberculosis and Respiratory Diseases
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• 제83권1호
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• pp.89-95
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• 2020

Background: Same-day sputum microcopy is recommended in areas where sputum smear microscopy external quality assessment (EQA) is effectively implemented and sturdy. In Addis Ababa, the status of EQA and drop-out of same-day sputum smear microcopy has not yet been assessed. The objective of this study was to assess the quality of same-day sputum smear microscopy and diagnostic drop-out of presumptive tuberculosis (TB) patients in health facilities (HFs) across Addis Ababa, Ethiopia. Methods: Amulti-analysis was conducted from September 2016 to July 2017 to determine the status of external quality assessment and diagnostic drop-out of presumptive TB patients registered for same-day sputum smear microscopy. Data was coded and entered in Microsoft Excel, and subsequently transferred and analyzed using SPSS version 20.0. Results: The drop-out of same-day sputum smear microscopy was 209 (6.2%). More than 33% of the specimens collected for purposes of same-day sputum smears were of poor quality. Among the selected HFs for the study: 13 (46.4%) used filter reagents prior to sputum smear staining while 75% of the selected HFs for the study used smear microscopy services interruption in a year. The sensitivity and specificity of the HFs participating in regional quality assessment scheme for the diagnosis of TB was 97.4% and 99.6%, respectively. Conclusion: The diagnostic drop-out of same-day sputum smear microscopy was high in Addis Ababa. Strengthening EQA, competency-based laboratory professionals training on sputum smear microscopy might reduce the reading errors in sputum smear. Awareness creation of the community on the benefits gained from completion of specimen provision for the same-day approach decreases diagnostic drop-out and enhances TB control program.

• 한국항해학회지
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• 제22권3호
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• pp.73-92
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• 1998

Today the number of high school drop-outs is increasing , and also it is serious social problems. But almost factor analyses on the drop-outs are projected by questionnaire. This paper find out by the real data form the concerned documents what factors of drop-outs are. In order to accomplish this study purpose, the methodology are used such as Fequency Analysis, Correlation Analysis, Crosstabulation Analysis. Through the this study this paper could siome suggestions as followings. The first , all education authority should analysis what factors of drop-outs and what drop-out situation is . The second, every teacher should counsel with all problem students sincerely regarding to their characters, future occupations, life course and etc. The third, the most and worst important factors of drop-out is runaway. Because it is very difficult for teacher to teach, lead and guide a runaway student, therefore thepreventino of runaway is efficient for reducing of drop-outs. The fouth, the students violating rules are retrained propoerly in view of guide for good path. The fifth, besides of the above factors. there are drop-out factors such as the health, disease, dafety accidents . All parents. teachers, and students should try their best to solve. To the end, education authority try to encourage teachers to do their role with maximum sense of duty.

• 패션비즈니스
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• 제15권4호
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• pp.87-109
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• 2011

This study was to examined the relationship between goal setting, self improvement, social support of parents, friendship, school adaptation, drop out. In our research model, goal setting, self improvement, social support of parents, and friendship is exogenous variable and school adaption and drop out is endogenous variable. A total of 323 undergraduate student(254 female, 69 male) complete the questionnaires. Structural equation modelling showed that, as hypothesized, establishment of goals, social support of parent and friendship have effect on school adaptation, and friendship also have direct effect on drop out. School adaptation mediate path from goal setting, social support of parents, and friendship. This study provides empirical evidence for a model that show how to control the drop out of students.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.940-947
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• 2011

Load capacity varies according to a day of the week in traction power supply system, because time schedule in railway is changed as demand for passengers and freights. Therefore, Voltage drop also varies as load capacity. In Korea railway, Voltage collected from catenary in train is decreased, as load supplied traction power supply system is increased. Therefore, investigation about voltage drop should be performed, before development of countermeasure against voltage drop. The investigation can be performed by simulation or field test. Naturally, field test is more precise than simulation. In addition, field test should be carried out at peak load. This paper presents test and analysis about voltage drop in railway. The test is performed in both a day of the week and weekend. The analysis is figured out comparison load capacity between two days and voltage drop across terminal.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.2210-2211
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• 2011

Load capacity varies according to a day of the week in traction power supply system, because time schedule in railway is changed as demand for passengers and freights. Therefore, Voltage drop also varies as load capacity. In Korea railway, Voltage collected from catenary in train is decreased, as load supplied traction power supply system is increased. Therefore, investigation about voltage drop should be performed, before development of countermeasure against voltage drop. The investigation can be performed by simulation or field test. Naturally, field test is more precise than simulation. In addition, field test should be carried out at peak load. This paper presents test and analysis about voltage drop in railway. The test is performed in both a day of the week and weekend. The analysis is figured out comparison load capacity between two days and voltage drop across terminal.

• 산업진흥연구
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• 제8권2호
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• pp.81-91
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• 2023

본 연구는 고등학생을 대상으로 학업스트레스가 자아존중감, 또래관계 및 그릿을 통하여 학업중단의도에 미치는 메카니즘을 파악하여 학업중단 예방을 위한 기초자료를 제시하는데 있다. 연구대상은 충남의 3개 시군에서 편의표집한 고등학생 283명이었다. 자료분석은 SPSS PC+ Win. ver. 25.0과 SPSS PROCESS macro ver. 4.2를 활용하였으며, 적용된 통계기법은 기술통계, 신뢰도분석, 상관분석 및 조절된 매개효과분석이었다. 연구결과 첫째, 학업스트레스는 학업중단의도와 정적인 상관관계를 보였으나 자아존중감, 그릿, 또래관계와는 부적인 상관관계를 보였다. 둘째, 그릿은 자 아존중감이 또래관계에 미치는 영향을 증진시키는 상승역할 뿐만 아니라 학업스트레스→자아존중감→또래관계→학업중단의도의 경로를 조절 매개하는 역할을 하였다. 고등학생들의 학업스트레스가 학업중단의도에 직접적인 영향을 미치는데, 자아존중감, 또래관계 및 그릿이 학업중단의도를 예방할 수 있는 중요한 변수로 활용될 수 있음을 확인하였다.

• 한국환경과학회지
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• 제6권4호
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• pp.391-397
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• 1997

The study was carried out to demonstrate the superiority of used packing in view of energy saving and efficiency of mass transfer, comparing with conventional packing. The results are as follows : 1. Owing to low Pressure drop under high load. 25mm NSW-ring, pp. can cause energy saving 2. The unique magnitudes of used packing are as follows $C_G$=5.78, m=0.67, n=0.46 3. Used packing can make high efficiency including energy saving because of low pres sure drop per the number of transfer unit. To rate the characteristic of packing, It should be carried out that the measurement of pressure drop per packing height and per the number of transfer unfit. This study demonstrated the superiority of used packing by carring out above experiment and could be used as basic reference for design and predicting efficiency of packing tower which is tilled with same packing.