• 제목/요약/키워드: Focus adjustment

검색결과 169건 처리시간 0.021초

대칭성 공차를 갖는 교환렌즈용 줌 렌즈의 핀트 조정법과 통계적 해석 (Focus Adjustment Method with Statistical Analysis for an Interchangeable Zoom Lens with Symmetric Error Factors)

  • 류재명;조재흥;강건모;이해진;요네야마 슈지
    • 한국광학회지
    • /
    • 제22권5호
    • /
    • pp.230-238
    • /
    • 2011
  • 디지털 일안 반사식 카메라 또는 콤팩트 시스템 카메라용의 교환렌즈용 줌 광학계는 화각과 제품 사양에 따라 여러 가지 형태 가 있으므로, 하나의 AF(auto-focus)군으로만 줌 렌즈의 광각단과 망원단 2곳에서 상면이동의 보정(즉, 핀트 조정)이 불가능한 경우가 발생한다. 또한 줌 광학계의 광각단과 망원단 2곳에서의 후초점거리(back focal length, BFL)가 설정된 BFL 설계값과 일치하도록 조정하기 위해서는 적어도 2곳에서 핀트 조정을 해야 한다. 본 논문에서는 이러한 광학계에 대한 종민감도의 개념을 사용한 핀트 조정의 계산 방법에 대해 제안하고, 이 광학계에 대해 핀트 조정의 조정량 한계를 통계적 분석을 통하여 계산했다.

대칭형 공차를 갖는 플로팅 광학계의 상면 변화 보정 방법에 대한 통계적 해석 (Statistical Analysis of Focus Adjustment Method for a Floating Imaging System with Symmetric Error Factors)

  • 류재명;김용수;조재흥;강건모;이해진;이혁기
    • 한국광학회지
    • /
    • 제23권5호
    • /
    • pp.189-196
    • /
    • 2012
  • 플로팅 광학계는 초점 맞춤 시, 2개 이상의 군이 움직이는 광학계를 의미한다. 카메라 광학계에서는 매크로 렌즈와 같이 배율 변화가 큰 광학계에 주로 채용된다. 플로팅 광학계도 가공 및 조립 오차로 인해 무한대단 및 매크로단의 초점위치가 촬상소자의 결상면과 일치하지 않는다. 그러므로 제조공정상에서 이러한 BWD(Back Working Distance) 차이를 최소화하는 초점 조정을 해야 한다. 본 논문에서는 플로팅 광학계의 각 군들의 이동량을 결정하기 위하여 초점 조정에 필요한 캠 회전각을 계산하고, 초점조정에 따른 플로팅 광학계의 최대 배율도 보정하는 수치해석 방법을 제안하였다. 그리고 이를 이용하여 대칭형 공차를 갖는 플로팅 광학계의 제조 오차를 고려한 초점 조정에 필요한 캠 회전각의 분포를 통계학적으로 계산하여 캠 회전각의 허용 범위를 결정하는 방법도 제안하였다.

다문화가정 부부의 가정생활 적응 요인에 대한 연구 (Adjustment Factors for Family Life of Multi Cultural Family Couples)

  • 강기정;정천석
    • 가족자원경영과 정책
    • /
    • 제13권2호
    • /
    • pp.153-167
    • /
    • 2009
  • This research analyzes factors of family life adjustment in mixed-culture families through a focus group and individual interviews with nine mixed-culture couples eighteen people who live in city C. First, the reason that women of other cultures wants to marry Korean men is because they find it a good opportunity, as they expect that Korean husbands will take responsibility of their family. On the other hand, Korean men also expect that they would have some similarities to each other. Also, in southeastern Asian men have more freedom than women to choose an international marriage in Southeastern Asia. Second, mixed-culture couples in everyday life are affected by communication problems, cultural differences, natural environment, financial situation, male -dominant attitude, self-adjustment pressure, house-work role and financial support from their own country. Third, wives from other cultures ask for social support to adjust in Korea and make a healthy family. These women can be important, as they have their own role in the family even though they may be far from their mother in law's strong expectation in how well she can adopt Korean culture.

  • PDF

뇌졸중 환자의 사회재적응 구조모형: Roy의 적응모형에 기반하여 (A Structural Equation Model on Social Re-Adjustment of Stroke Patients: Based on Roy's Adaptation Model)

  • 김정미;김화순
    • 대한간호학회지
    • /
    • 제53권4호
    • /
    • pp.480-495
    • /
    • 2023
  • Purpose: This study aimed to develop and test a structural equation model on social re-adjustment of individuals with stroke based on a literature review and Roy's adaptation model. Methods: This study involved 321 participants who had a stroke and visited the outpatient department after discharge. The hypothetical model was developed based on Roy's adaptation model and a comprehensive review of previous literature on the topic. The model comprised four exogenous variables (neurological damage, gender [man], age, and social support) and five endogenous variables (activities of daily living, acceptance of disability, depression, rehabilitation motivation, and social re-adjustment). The data were analyzed using SPSS Windows software version 22.0 and AMOS 23.0. Results: Out of 28 research hypotheses, 18 were supported, and they indicated approximately 64% probability of social re-adjustment. Social re-adjustment is directly and significantly affected by age, social support, activities of daily living, and depression. Social re-adjustment is indirectly affected by neurological impairment, gender (men), age, social support, and rehabilitation motivation. Conclusion: Continuous assistance and care should be provided for individuals with disabilities caused by sudden neurological damage to facilitate gradual improvement in their social re-adjustment. To enhance social re-adjustment, especially among older adults, newly developed interventions should focus on improving their activities of daily living, preventing depression, and enhancing support from family and healthcare personnel.

자아강도, 실패내성 및 수행불안이 학령기 아동의 학교수업적응에 미치는 영향: 성별에 따른 차이를 중심으로 (The Effects of Ego Strength, Failure Tolerance, and Performance Anxiety on School-Age Children's School Class Adjustment: A Focus on Gender Differences)

  • 김세영
    • 아동학회지
    • /
    • 제37권2호
    • /
    • pp.13-25
    • /
    • 2016
  • Objective: The purposes of this study were to examine the effects of school-age children's ego strength, failure tolerance, and performance anxiety on their school class adjustment, and to model the relation structure of the variables. Method: For these purposes, a questionnaire survey was conducted with 562 6th graders. Results and Conclusion: The results of this study are summarized as follows. First, ego strength, failure tolerance, and performance anxiety were significantly different according to gender. Second, in male students, ego strength, failure tolerance, and performance anxiety had a significant direct effect on school class adjustment. In addition, ego strength and failure tolerance had a significant indirect effect on school class adjustment. Third, female students' paths to school class adjustment were similar to male students' but the effect of failure tolerance on performance anxiety and the effect of performance anxiety on school class adjustment were not significant. Fourth, in the results of multi-group analysis, the effect path from ego strength to school class adjustment was different between male and female students, and the effect was higher in female students than in male students.

COVID-19를 맞이한 간호대학생의 적응 경험 (Adjustment Experiences of Nursing Students in the Face of COVID-19)

  • 임숙빈;최은희;이미영;홍나영;황두영;최윤비
    • 한국학교보건학회지
    • /
    • 제33권3호
    • /
    • pp.213-221
    • /
    • 2020
  • Purpose: The purpose of this study was to investigate adjustment experiences of nursing students in the face of COVID-19. Methods: The subjects were 4 focus groups consisting of a total of 20 participants, including 18 nursing students and 2 professors. From July to August 2020, focus group interviews were conducted. Results: We identified 15 sub-themes and 4 hemes. The 4 themes were sudden and new situation, changes in daily life due to non-face-to-face contact, becoming in an unfamiliar life, rising to the challenge of the new normal. Conclusion: Participants were experiencing difficult situations, accepting and recognizing them as challenges. It is necessary to conduct further research on how college students experiencing a crisis accept the situation and how they think about it, according to their major. In addition, since this research was conducted through focus group interviews, it is necessary to conduct further research using another research method.

가족건강성이 청소년의 학교적응에 미치는 영향 및 사회적 지지의 매개효과 - 경남지역 중학생을 중심으로 - (A Study of the Effect of Family Strength on School Adjustment among Adolescents and the Mediating Effect of Social Support - Focus on Middle School Students of the Gyeongnam Region -)

  • 심미영;황순금
    • 가족자원경영과 정책
    • /
    • 제17권3호
    • /
    • pp.1-17
    • /
    • 2013
  • This study focused on adolescents who are studying in middle schools of the Gyeongnam region, aims to provide methods for improving school adjustment among adolescents through the enhancement of family strength. It will examine the effect of family strength on adolescents' school adjustment verify the mediating effect of social support in the influential relationships of school adjustment. The summarizations, obtained in this study are as follows: First, an analysis of the results of the effect of family strength on social support demonstrated that family strength had a positive effect on social support. That is, as family strength was higher, social support increased. Second, an analysis of the results of the effect of family strength on school adjustment show that family strength would have a direct effect on school adjustment, which is positive. Where family strength was higher, school adjustment of adolescents was also higher. Third, the results of the effect of social support on school adjustment when controlling family strength demonstrate that social support would have a positive effect on school adjustment, however, family strength did not predict school adjustment. Therefore, the complete mediating effect of social support in the relationship between family strength and school adjustment was identified. In conclusion, it was identified that family strength had an indirect effect on school adjustment, but not a direct effect. Therefore, it is indicated that indirect intervention through the social support system as well as direct intervention for the improvement of adolescents' school adjustment is required. In addition, it was confirmed that family strength and social support would be more important variables than control variables, which reflect the characteristics of adolescents and family in terms of school adjustment. Therefore, the recognition that the responsibility in adjusting to school is the common role of families, schools, and community going beyond the individual responsibility of adolescents is needed.

  • PDF

투시형 두부 장착형 디스플레이방식의 다초점 3차원 디스플레이 (Multi-focus 3D display of see-through Head-Mounted Display type)

  • 김동욱;윤선규;김성규
    • 방송공학회논문지
    • /
    • 제11권4호
    • /
    • pp.441-447
    • /
    • 2006
  • 투시형 두부 장착형 디스플레이(HMD) 방식의 3차원 디스플레이는 스테레오스코픽 디스플레이에 의한 가상의 3차원 데이터와 실제 장면을 동시에 볼 수 있는 장점(MR-Mixed Reality)이 있다. 그러나 장시간 사용 시 눈의 피로현상이 발생한다. 또한 가상 데이터의 고정된 초점으로 인한 비초점화 현상이 발생한다. 이것의 중요한 요인 중 하나가 눈의 초점조절 능력 불만족이다. 이것의 해결방법으로 투시형 HMD에 초점조절 가능 3차원 디스플레이(다초점 3차원 디스플레이) 기술의 적용을 제안하였다. 결과적으로, 단안에서 현실세계의 물체에 대한 초점조절과 다초점에 의한 가상데이터의 초점조절이 일치함을 확인하였다.

Towards a Student-centred Approach to Translation Teaching

  • Almanna, Ali;Lazim, Hashim
    • 비교문화연구
    • /
    • 제36권
    • /
    • pp.241-270
    • /
    • 2014
  • The aim of this article is to review the traditional methodologies of teaching translation that concentrate on text-typologies and, as an alternative, to propose an eclectic multi-componential approach that involves a set of interdisciplinary skills with a view to improving the trainee translators' competences and skills. To this end, three approaches, namely a minimalist approach, a pre-transferring adjustment approach and a revision vs. editing approach are proposed to shift the focus of attention from teacher-centred approaches towards student-centred approaches. It has been shown that translator training programmes need to focus on improving the trainee translators' competences and skills, such as training them how to produce and select among the different versions they produce by themselves with justified confidence as quickly as they can (minimalist approach), adjust the original text semantically, syntactically and/or textually in a way that the source text supplely accommodates itself in the linguistic system of the target language (pre-transferring adjustment), and revise and edit others' translations. As the validity of the approach proposed relies partially on instructors' competences and skills in teaching translation, universities, particularly in the Arab world, need to invest in recruiting expert practitioners instead of depending mainly on bilingual teachers to teach translation.