• 제목/요약/키워드: self-adaptation

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자가학습과 지식증류 방법을 활용한 LiDAR 3차원 물체 탐지에서의 준지도 도메인 적응 (Semi-Supervised Domain Adaptation on LiDAR 3D Object Detection with Self-Training and Knowledge Distillation)

  • 우정완;김재열;임성훈
    • 로봇학회논문지
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    • 제18권3호
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    • pp.346-351
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    • 2023
  • With the release of numerous open driving datasets, the demand for domain adaptation in perception tasks has increased, particularly when transferring knowledge from rich datasets to novel domains. However, it is difficult to solve the change 1) in the sensor domain caused by heterogeneous LiDAR sensors and 2) in the environmental domain caused by different environmental factors. We overcome domain differences in the semi-supervised setting with 3-stage model parameter training. First, we pre-train the model with the source dataset with object scaling based on statistics of the object size. Then we fine-tine the partially frozen model weights with copy-and-paste augmentation. The 3D points in the box labels are copied from one scene and pasted to the other scenes. Finally, we use the knowledge distillation method to update the student network with a moving average from the teacher network along with a self-training method with pseudo labels. Test-Time Augmentation with varying z values is employed to predict the final results. Our method achieved 3rd place in ECCV 2022 workshop on the 3D Perception for Autonomous Driving challenge.

한의과대학 예과생의 진로관련 특성에 관한 연구 (Career-related characteristics of premedical students in Korean Medicine college)

  • 진성미;박선주
    • 대한예방한의학회지
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    • 제17권3호
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    • pp.47-61
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    • 2013
  • Objectives : This study was aimed at exploring career-related characteristics of premedical students in Korean Medicine college and those relationships with career development readiness and vocational value. Methods : A total of 140 premedical students participated in the survey. The questionnaire consisted of demographic characteristics and career-related characteristics such as motive for career choice, specialty preference after college graduation, and school life adaptation. Also they responded in the web-survey of career development readiness inventory and vocational value inventory developed by Korea Research Institute for Vocational Education & Training. Eight items of motive for career choice were collected from the pilot study from 70 premedical students. Results : 'Job stability' was the top motive for career choice(25.5%). The average college life adaptation score was relatively low(13.7) : higher in male(14.3) and the early career decision group(14.2) than female (12.9) and late decision group(12.9), which was statistically significant(p=0.019 and p=0.036, respectively) in the subgroup analyses. The result of career development readiness inventory showed that 'self-knowledge' (79.3) and 'confidence on career decision' (78.6) were the two highest, which is similar to the result of the vocational value inventory ('fulfilling abilities' and 'self-improvement'). More characteristics were also described. Conclusions : The results showed that Korean Medicine premedical students have high vocational identity. This study suggested that more specified studies for identifying career-related characteristics for Korean Medical students should be conducted in order to design systematic and professional medical education programs.

일개 신설 대학교 병원 중환자실 신규 간호사의 적응 경험 (Lived Adaptation Experiences of New ICU Nurses Who are Working in a Newly Established University Hospital)

  • 박형숙;김경남;강은희;이전마;박순미
    • 기본간호학회지
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    • 제18권2호
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    • pp.226-236
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    • 2011
  • Purpose: The purpose of this study was to determine the meaning of the adaptation experiences of new ICU nurses who were working in a newly established university hospital. The study was based on phenomenological research methodology. Method: Data were collected over 3 months through in depth interview with 6 new nurses who had worked less than 1 year in a newly established ICU of university hospital of less than 1 year located in Y city. The Colaizzi analysis method was used for data analysis. Results: The themes were classified into 13 themes clusters. The 13 themes clusters were finally grouped into 6 categories, 'The endlessness of a new beginning', 'Pressure of work due to lack of senior nurses', 'Wanting to quit', 'Attachment for the complete hospital and ICU', 'Preciousness of colleagues', 'Pride in self-growth'. Conclusion: New ICU nurses have a difficult time due to pressures of work and lack of expert knowledge, and anxiety adds to these problems making the situation more difficult. The study results indicate that professional knowledge and skills learned through repetition of difficult work, pride through self growth, recognition from others and good-fellowship are driving forces to overcome obstacles and with stand difficult daily work.

산욕기 초산모가 지각한 사회적 지지와 어머니 역할 적응과의 관계연구 (Perceived Social Support and Adaptation to the Maternal Role in First-time Mothers during the Postpartum Period)

  • 이은숙
    • 여성건강간호학회지
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    • 제1권1호
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    • pp.28-43
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    • 1995
  • The relationship between perceived social support and adaptation to maternal role for first-time mothers was investigated in this descriptive correlational study. A nonprobable sample of 90 first-time mothers were selected, who had uncomplicated perinatal experiences and delivered healthy and term newborns as well. The data was collected during a home interview at 4-6weeks postpartum. The outcome of adaptations was defined as the level of sensitivity in parent-infant interactions and of the self confidence in infant care. The perception of social support in the primiparous was assessed by the NSSQ during the postpartum. The results obtained from this study are summarized as follows : 1. The mean score of the perceived total functional support was $116.6{\pm}37.5$ points (affective : 38.1 affirmative : 39.3, aid : 39.3), and the score of the total network support was $45.2{\pm}13.9$ points (size : 4.9, duration :19.8 frequency : 20.4). These scores tended to be slightly low. 2. The mean score of the self confidence on the infant care activity as the subjective aspect of the maternal role adaptation (MRA) was 56.5 points (86.9%), whereas that of the sensitivity of the mother-infant interaction of the MRA was 78.9 points (63.2%). 3. The subjective aspect of the MRA has showed a positive relation ship with the aid dimension of the functional support. And the objective aspect of the MRA also showed a positive relationship with the total functional support and the total network support. However the correlating degrees were slightly low. In conclusion, the primiparous mothers perceived that they had received a small amount of social support during the postpartum period, suggesting the need of various kinds of social support to promote the MRA for the primiparous.

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자살 생각을 가진 우울증 노인의 자조집단 내의 적응 경험에 관한 융합적 연구 (A Convergence Study on the Adaptation Experience of in Self-help Group of Depressed Elderly with Suicidal Thought)

  • 송충숙;김진주;정선영
    • 한국융합학회논문지
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    • 제10권1호
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    • pp.353-360
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    • 2019
  • 목적: 최근 노인의 우울은 두드러진 정신기능의 변화로 매년 증가하여 삶에 큰 영향을 미치고 있다. 우울은 다양한 심리적, 사회적 문제를 경험하게 하고 노인 자살의 강력한 예측 요인으로 작용하고 있다. 본 연구에서는 자살 생각을 가진 우울증 노인의 삶에 대한 적응 경험을 융합적으로 이해하고자 한다. 절차 및 방법: 자조집단 내에서 GDS 척도가 17점 이상이고, SSI 척도가 9점 이상인 7명의 노인을 대상으로 이론적 포화가 될 때까지 면담을 실시하였고, 근거이론 분석 방법에 따라 자료를 분석하였다. 결과 및 기여도: 동료 집단과의 교류를 통해 우울증 노인이 스스로 삶의 중심이 되는 것이 중요하다는 것을 인지하게 되어 자신의 삶을 포용하게 되었다. 향후 연구 방향: 자살 생각을 가진 우울증 노인의 적응 경험에 영향을 미치는 동료집단과의 긍정적인 교류에 대한 경험적 연구가 확대되고 지속되어야 할 것이다.

간호대학생의 비판적 사고성향, 문제해결능력, 좌절인내력이 대학생활 적응에 미치는 영향 (Effects of Critical Thinking Disposition, Problem-Solving Ability and Frustration Tolerance on College Adaptation in Nursing Students)

  • 곽혜원
    • 디지털융복합연구
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    • 제16권8호
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    • pp.233-242
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    • 2018
  • 본 연구의 목적은 간호대학생의 비판적 사고성향, 문제해결능력, 좌절인내력, 대학생활 적응 정도를 알아보고, 간호대학생들의 대학생활 적응에 영향을 미치는 요인을 파악하는 것이다. 연구대상자는 K도에 소재하는 2개 대학 간호학과 학생 169명이었다. 자료수집을 위한 설문조사는 2017년 10월 1일부터 11일까지 실시하였고, SPSS 25.0을 사용하여 일반적 특성은 빈도와 백분율로 분석하였으며, 각 변수는 평균과 표준편차, t-test, ANOVA, Pearson correlation과 Multiple regression으로 분석하였다. 연구결과, 일반적 특성에 따른 대학생활 적응의 차이는 전공만족도(F=12.66, p<.001)에서 유의한 차이를 보였다. 대학생활적응은 비판적 사고성향(r=.22, p<.01) 과는 유의한 순상관관계가 있었으며, 좌절인내력(r=-.46, p<.001) 과는 유의한 부의 상관관계에 있었다. 본 연구를 통해 간호대학생의 대학생활 적응에 영향을 미치는 요인으로 비판적 사고성향, 좌절인내력임을 확인할 수 있었다. 향후 간호대학생의 대학생활적응을 위해서는 비판적 사고를 증진시킬 수 있는 프로그램을 개발하고, 좌절을 극복하고 인내할 수 있는 인내력 향상인성함양 프로그램 마련이 필요하다.

자기 정규화를 통한 도메인 불변 특징 학습 (Learning Domain Invariant Representation via Self-Rugularization)

  • 현재국;이찬용;김호성;유현정;고은진
    • 한국군사과학기술학회지
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    • 제24권4호
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    • pp.382-391
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    • 2021
  • Unsupervised domain adaptation often gives impressive solutions to handle domain shift of data. Most of current approaches assume that unlabeled target data to train is abundant. This assumption is not always true in practices. To tackle this issue, we propose a general solution to solve the domain gap minimization problem without any target data. Our method consists of two regularization steps. The first step is a pixel regularization by arbitrary style transfer. Recently, some methods bring style transfer algorithms to domain adaptation and domain generalization process. They use style transfer algorithms to remove texture bias in source domain data. We also use style transfer algorithms for removing texture bias, but our method depends on neither domain adaptation nor domain generalization paradigm. The second regularization step is a feature regularization by feature alignment. Adding a feature alignment loss term to the model loss, the model learns domain invariant representation more efficiently. We evaluate our regularization methods from several experiments both on small dataset and large dataset. From the experiments, we show that our model can learn domain invariant representation as much as unsupervised domain adaptation methods.

The Effect of Depression, Anxiety, and Stress on International Students' Adjustment to College Life in the Context of the COVID-19 Pandemics

  • kim, Jin-young;Park, Jung-Hee;Moise, Muhire;Yoon, Byoung-Gil;Kim, Yong-Seok
    • International Journal of Advanced Culture Technology
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    • 제10권3호
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    • pp.1-10
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    • 2022
  • This study examined the relationship between depression, anxiety, stress, and adaptation to college life of international students living in South Korea during the COVID-19 pandemic and the factors affecting the adaptation to college life. This study was carried out between December 3, 2021, to January 25, 2022, on international students living in South Korea. The questionnaires were composed of self-reported questionnaires, and the survey URL was sent as text messages to international students who understood the purpose and rationale of this study and consented to participate in the survey. The data were analyzed using SPSS WIN 22.0, and t-test, ANOVA, Pearson's Correlation Coefficient, and hierarchical regression were performed. As a result of the study, the average score of the study subjects was 8.44 points for depression, 8.28 points for anxiety, and 9. 28 points for stress. factors with significant differences in adaptation to college life according to general characteristics were living means and smoking. The relationship between the main variables, it was significant with depression (r=-.785, p<.001), anxiety (r=-.593, p<.001), and stress (r=-.726, p<.001). There was one negative correlation. It was found that the higher the depression, anxiety, and stress, the lower the college life adaptation. Lastly, depression (β=-.666, p<.001) was the factor affecting foreign students' adaptation to college life, and the explanatory power was 62%. Therefore, for international students to adapt to college life, it is necessary to establish an institutional strategy to detect depression, a negative psychological emotion, at an early stage and to systematically manage it. Also, it is necessary to find an intervention plan to relieve depression that can be applied in social isolation situations due to the spread of infectious diseases. Research confirming the intervention effect should be upgraded.

한국 경기만의 기후 변화에 따른 해수 물리적 특성 및 해수면 영향과 적응 대책 (Variability of Sea Water Characteristics and Sea Levels Due to Climate Change and Appropriate Adaptation Strategies in Gyeonggi Bay)

  • 이수아
    • 해양환경안전학회지
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    • 제29권2호
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    • pp.98-105
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    • 2023
  • 세계 5대 갯벌해역으로 유명한 한국 서해 경기만의 기후변화 영향을 파악하고, 기후변화 영향을 최소화하기 위한 적응방안 연구하였다. 경기만의 기후변화 영향으로 2100년에 수온은 1.2 ℃ 증가하고, 염분이 1.1 PSU 감소하며, 해수면은 35.2 cm 상승하는 것으로 예측되었다. 또한 해수면 상승의 효과로 150.5 km2의 해안지역이 침수될 것으로 예상되었다. 기후변화로 인한 경기만 생태환경 영향을 최소화하기 위한 적응대책으로는 1) 경기만 자체 자연환경의 적응능력 유지를 위한 지원, 2) 생물 서식지 확보를 위한 인간 활동 조정 등 두가지 방안이 제시되었다.

신규간호사의 사회심리적 건강과 자기 돌봄이 실무 적응 어려움에 미치는 영향 (The Impact of Psychosocial Health and Self-nurturance on Graduate Nurse Experience)

  • 이지윤;이미자;박소영
    • 간호행정학회지
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    • 제21권5호
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    • pp.459-468
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    • 2015
  • Purpose: The purpose of this study was to identify the effect of Psychosocial health and Self-nurturance on the experience of new graduate nurses. Methods: A cross-sectional survey design was used. The participants in this study were 149 nurses who had less than 12 months of nursing experience and were working at one of 4 general hospitals. The data were collected by a self-administered questionnaire from Nov. 2012 to Oct. 2014. Results: The total mean score for Psychosocial health was $3.07{\pm}0.60$, Self-nurturance, $3.38{\pm}0.44$, and graduate nurse experience, $2.59{\pm}0.27$. The effect of Psychosocial health and Self-nurturance predicted 23% of variance in graduate nurse experience. Conclusion: These results indicate that Psychosocial health and Self-nurturance have a positive relationship to graduate nurse experience. Therefore, further studies including approaches that support Psychosocial health and Self-nurturance are recommended to help in the adaptation of newly graduated nurses to clinical settings.