• 종양간호연구
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• 제6권2호
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• pp.104-110
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• 2006

Purpose: This study was to investigate the satisfaction for voluntary activity and the meaning of life in hospice volunteers. Method: Data were obtained by self-reported questionnaire from 102 volunteers and were analyzed using a t-test, ANOVA and Pearson's correlation. Result: The mean score of the satisfaction for hospice volunteer activity was $2.48{\pm}0.38$. Of the domains of the satisfaction, the experience domain had the highest mean score $(2.93{\pm}0.53)$, and the social exchange domain had the lowest mean score $(1.65{\pm}0.63)$. The mean score of the meaning of life was $3.20{\pm}0.33$. The score of satisfaction was significantly different by economic status, and volunteering time per week. The score of meaning of life was statically different by financial status. There was a positive correlation between satisfaction for voluntary activity and the meaning of life. Conclusion: Satisfaction for hospice volunteer activity was significantly related to their meaning of life. In order to increase the satisfaction of volunteers, it is important to consider their financial aspect and the volunteering time.

• 한국간호교육학회지
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• 제8권1호
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• pp.51-60
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• 2002

The purpose of this study was to identify the relationship between self-esteem, self- efficacy and clinical practice performance, academic achievement, decision making of major field in clinical practice . The study subjects consisted with 244 students from G. junior nursing college that will adapt a new majoring program of clinical nursing practice funded by Ministry of human and resources development. Data were analyzed using descriptive statistics, and t-test, Pearson correlation, and multiple regression. The results of this study were summarized as follows: 1. The students were relatively performed well in clinical practice setting (total M :3.78). The item of student's personal relationship between patients, patient's family, and professional staff showed high score (M=3.96). However students did not feel comfortable to communicate with patients, patient's family and professional staffs in clinical setting(mean=3.56). 2. Students who had experiences of temporal absence from school showed significant difference in the variable of academic achievement and decision making of major field in clinical practice Students who entered to nursing school with self-motive revealed statistically significant difference in the variable of clinical practice performance, academic achievement, self-esteem, self-efficacy, and decision making of major field in clinical practice. 3. There was a significant correlation between self-esteem and clinical practice performance, (r=.512, p<.000). And the relation between self-esteem and decision making of major field in clinical practice was significantly correlated(r=.377, p<.000). Self-efficacy and clinical practice performance(r=.567, p<.000), and decision making of major field in clinical practice (r=.441, p<.000) showed significant correlations. Also relation between academic achievement and self-esteem reveled a significant correlation(r=.129, p<.05) but correlation between self-efficacy and academic achievement was not significant. 4. Correlation between clinical practice performance and decision making of major field in clinical practice also identified a significant relation(r=.498, p<.000). 5. Self-esteem and self-efficacy variables predicted clinical practice performance and explained 37.7% of clinical practice performance. 6. Aptitude and personal interests(m=4.07) reveled important factor affecting to select majoring area in clinical practice, and advice from parents reflected low percentage on selecting places(m=2.42). In conclusion, the variables of self-esteem and self-efficacy showed significant correlations with the variables of student's clinical practice performance, academic achievement, and decision making of major field in clinical practice. Thus it is recommended that student's affective domain of self-esteem and self-efficacy should be developed by nursing intervention before clinical nursing education.

• 대한수학교육학회지:학교수학
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• 제18권2호
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• pp.397-423
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• 2016

본 연구에서는 우리나라 중 고등학생의 수학 학습 동기 증진 프로그램을 학습자 특성, 수학 과제 특성, 자기조절학습이론을 고려하여 정의적 측면과 인지적 측면으로 개발하였다. 정의적 프로그램은 수학 학습에서 학생의 조절초점 확인, 수학적 자기조절효능감 향상, 학업스트레스 대처, 수학 불안 감소를 목적으로 개발되었고, 인지적 프로그램은 중 고등학교의 수학 과제난이도에 대한 선호 정도를 증진시킬 수 있도록 개발되었다. 개발한 프로그램은 수학 성취수준과 학업동기유형을 고려하여 프로그램 참가를 희망한 남녀 중 고등학생들 12명에게 10주 동안 적용하였다. 수학 교사의 관찰일지와 4차에 걸친 심층면담을 분석한 결과, 조절초점 확인 프로그램에서 학생의 향상초점과 예방초점이 변화하지는 않았으나, 수학적 자기조절효능감 향상 프로그램은 성취수준이나 성차와 관계없이 자율동기, 통제동기가 높았던 학생들에게서 긍정적인 효과가 나타났다. 학업스트레스 대처와 수학 불안 감소 프로그램에서는 신체적 대처 활동이 학교급, 성차, 성취수준에 관계없이 수학 학습 동기 증진에 효과적이었고, 수학 시험 불안 해소 활동이 학업동기유형과 관계없이 효과적이었다. 인지적 프로그램에서는 오답노트와 문제만들기 활동이 결합된 '수학의 달인' 노트가 수학 학업 성취수준이 중 또는 하인 학생들에게서 수학 학습 동기 증진에 효과적이었다.

• 지능정보연구
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• 제28권4호
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• pp.27-40
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• 2022

최근 많은 발전을 이룬 의료 인공지능은 의사가 진단과 결정을 내리는 데 도움을 주는 등 중요한 역할을 수행하고 있다. 특히, 흉부 엑스레이 분야는 접근성 및 흉부질환 탐지에 유용함과 최근 COVID-19 상황이 도래함에 따라 많은 관심을 받고 있다. 그러나, 데이터의 수가 많음에도 레이블이 있는 데이터의 수가 부족하므로 효과적인 인공지능 모델을 만드는데 한계가 있다. 이러한 문제를 완화하는 방안으로 연합학습을 흉부 엑스레이 데이터에 적용한 연구가 등장했지만, 여전히 다음과 같은 문제를 내포하고 있다. 1) Non-IID 환경에서 발생할 수 있는 문제를 고려하지 않았다. 2) 연합학습 환경에서도 여전히 클라이언트의 레이블이 있는 데이터가 부족하다. 우리는 자기지도학습 모델을 연합학습의 Global 모델로 사용함으로써 위와 같은 문제를 해결하는 방법을 제안한다. 이를 위해 흉부 엑스레이 데이터를 사용한 연합학습에 알맞은 자기지도학습 방법론을 실험적으로 탐색하며, 자기지도학습 모델을 연합학습에 사용함으로써 얻을 수 있는 장점을 검증한다.

• 한국정보처리학회논문지
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• 제4권1호
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• pp.11-22
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• 1997

프랙탈 화상압축은 원화상을 일정 크기의 블럭으로 분할하고 자기 유사성(self -similarity)을 지닌 유사 영역을 탐색한다. 이 압축방식은 부가적인 코드북의 전송 이 필요하지 않아 높은 압축율을 달성하고 좋은 화질의 재생화상을 제공한다. 이러한 이점에도 불구하고 부호화시 유사 영역의 결정을 위한 복잡한 선형변환의 수행으로 인해 부호와 시간이 증가되는 단점이 있다. 본 논문에서는 블럭의 AC(alternating current)계수들을 이용하여 선형변환의 횟수를 감소시켜 부호화 시간을 줄이는 고속 프랙탈 화상압축을 제안한다. 제안 방식은 기존의 방식과 비교하여 좋은 화질을 제공 한다. 또한, 중요 기밀 데이터를 합성하는 화상 심층암호에 응용한 프랙탈 화상 압축 응용법을 제시한다.

• 대한안전경영과학회지
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• 제12권1호
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• pp.51-57
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• 2010

Cycling that transform human energy into mechanical energy is one of the man-machine systems out of sports fields. Benchmarking means "improving ourselves by learning from others', therefore benchmarking toward dominant cyclist is necessary on field. The goals of this study were to provide important factors on multi-disciplines (kinematics, physiology, power, psychology) for a tailored-training program that is suitable to individual characteristics. Two cyclists participated in this study and gave consent to the experimental procedure. One was dominant cyclist (years: 21 yrs, height: 177 cm, mass: 70 kg), and the other was non-dominant cyclist (years: 21, height: 176, mass: 70). Kinematic data were recorded using six infrared cameras (240Hz) and QTM (software). Physiological data (VO2max, AT) were acquired according to graded exercising test with cycle ergometer and power with Wingate test used by Bar-Or et. al (1977) and to evaluate muscle function with Cybex. Psychological data were collected with competitive state anxiety inventory (CSAI-2) that was devised by Martens et. al (1990) and athletes' self-management questionnaire (ASMQ) of Huh (2003). It appears that the dominant's CV of ankle joint angle was higher than non-dominant's CV and dominant's pedaling pattern was consistent in biomechanics domain, which the dominant's values for all factors ware higher than non-dominant's values in physical, and physiological domain, and their values between cognitive anxiety and somatic anxiety were contrary to each other in psychology. Further research on multi-disciplines may lead to the development of tailored-optimal training programs applicable with key factors to enhance athletic performance by means of research including athlete, coach and parents.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2009년도 추계학술대회
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• pp.15-24
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• 2009

Cycling that transform human energy into mechanical energy is one of the man-machine systems out of sports fields. Benchmarking means " improving ourselves by learning from others ", therefore benchmarking toward dominant cyclist is necessary on field. the goals of this study were to provide important factors on multi-disciplines (kinematics, physiology, power, psychology) for a tailored-training program that is suitable to individual characteristics. Two cyclist participated in this study and gave consent to the experimental procedure. one was dominant cyclist (years:21 yrs, height:177 cm, mass:70 kg), and the other was non-dominant cyclist(years:21, height:176, mass:70). Kinematic data were recorded using six infrared cameras (240Hz) and QTM (software). Physiological data (VO2max, AT) were acquired according to graded exercising test with cycle ergometer and power with Wingate test used by Bar-Or et. al ( 1977) and to evaluate muscle function with Cybex. Psychological data were collected with competitive state anxiety inventory (CSAI-2) that were devised by Martens et. al (1990) and with athletes' self-management questionnaire (ASMQ) of Huh (2003). It appears that the dominant's CV(coefficient of variability) was higher than non-dominant's CV in Sports Biomechanics domain, that the dominant's values for all factors ware higher than non-dominant's values in physical, and physiological domain, and their values between cognitive anxiety and somatic anxiety were contrary to each other in psychology. Further research on multi-disciplines may lead to the development of tailored-optimal training programs applicable with key factors to enhance athletic performance by means of research including athlete, coach and parents.

• 한국정밀공학회지
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• 제31권7호
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• pp.605-613
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• 2014

Scanning white-light interferometry is an important measurement option for many surfaces. However, serious profile measurement errors can be present when measuring free-form surfaces being highly curved or tilted. When the object surface slope is not zero, the object and reference rays are no longer common path and optical aberrations impact the measurement. Aberrations mainly occur at the beam splitter in the interference objective and from misalignment in the optical system. Both effects distort the white-light interference signal when the surface slope is not zero. In this paper, we describe a modified version of white-light interferometry for eliminating these measurement errors and improving the accuracy of white-light interferometry. Moreover, we report systematic errors that are caused by optical aberrations when the object is not flat, and compare our proposed method with the conventional processing algorithm using the random ball test.

• 대한수학교육학회지:수학교육학연구
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• 제20권1호
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• pp.21-43
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• 2010

본고에서는 인식론의 여러 분야인 선천주의(nativism), 경험주의(empiricism), 구성주의(constructivism) 등이 신경생물학적으로 어떻게 대응되어 나타나는가를 고찰하고, 그들 주장의 장단점을 살펴본다. 두 번째로 위의 이론들을 통해 수학교육의 기본이 되는 수인지(numerical/mathematical cognitipn) 분야를 소개하고 현재 연구 동향과 수학교육에의 적용을 모색한다. 이어서 fMRI 등의 뇌영상 촬영기법 등을 통해 현재까지 알려진 기초 대수적 활동과 관련된 두뇌 영역을 확정해보고자 한다.

• Wind and Structures
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• 제24권5호
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• pp.465-480
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• 2017

Modelling an equilibrium atmospheric boundary layer (ABL) in computational wind engineering (CWE) and relevant areas requires the boundary conditions, the turbulence model and associated constants to be consistent with each other. Among them, the inflow boundary conditions play an important role and determine whether the equations of the turbulence model are satisfied in the whole domain. In this paper, the idea of modeling an equilibrium ABL through specifying proper inflow boundary conditions is extended to the SST $k-{\omega}$ model, which is regarded as a better RANS model for simulating the blunt body flow than the standard $k-{\varepsilon}$ model. Two new sets of inflow boundary conditions corresponding to different descriptions of the inflow velocity profiles, the logarithmic law and the power law respectively, are then theoretically proposed and numerically verified. A method of determining the undetermined constants and a set of parameter system are then given, which are suitable for the standard wind terrains defined in the wind load code. Finally, the full inflow boundary condition equations considering the scale effect are presented for the purpose of general use.