• 한국도로학회논문집
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• 제10권1호
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• pp.117-122
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• 2008

콘크리트포장은 시공초기의 품질관리수준에 따라 전체수명이 결정될 정도로 시공초기의 품질관리가 매우 중요하다. 이러한 초기 품질관리는 콘크리트포장의 초기거동을 잘 파악하여 초기거동을 조절할 수 있는 방안을 도출하는 것이 중요하다. 콘크리트포장의 초기거동에 영향을 주는 요소는 크게 두 가지가 있다. 첫째는 콘크리트의 건조수축이고, 두 번째는 수화열 및 대기온도 변화에 따른 포장체의 온도변화이다. 따라서, 콘크리트의 열팽창계수와 건조수축은 콘크리트의 초기거동에 매우 중요한 요소라 할 수 있다. 지금까지의 열팽창계수는 완전히 양생된 콘크리트에 대해 실험하는 것이 일반적이었기 때문에 시공초기에 열팽창계수를 얻는데 한계가 있어 왔다. 또 건조수축도 시간방법의 한계로 초기 건조수축을 측정하는데 어려움이 있어 왔다. 본 연구에서는 콘크리트포장의 초기 거동을 조절할 수 있는 방안을 도출하기 위하여, 콘크리트의 초기 건조수축과 열팽창계수를 측정하고 이를 통해 콘크리트포장의 초기 거동 예측프로그램의 입력변수들과 적용 모델들에 대한 자료제공 및 검증을 위 한 기초자료를 제공하는데 그 목적을 두었다. 본 연구에서 얻은 결론은 현장에서 초기 콘크리트의 열팽창계수 값을 측정한 결과 $8.9{\sim}10.8{\times}10^{-6}/^{\circ}C$ 값을 나타내었으며, 콘크리트의 건조수축에 있어서 깊이별 effect와 size effect가 존재하는 것으로 분석되었다.

• 동아시아식생활학회지
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• 제17권3호
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• pp.351-363
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• 2007

Previously, we analyzed for nutrition knowledge and the use of nutrition knowledge in the everyday lives of students in order to develop nutrition education programs that focus on desirable behavior change. From this, we found that female students desired to participate in nutrition education more than male students, and regarding their concerns for nutrition education, 73.2% of the females and 50.0% of the males displayed interest in 'obesity and the regulation of body weight'. Therefore, this study showed female students give more attention to the obesity and the regulation of body weight than male students(p=.000<.001). In addition, female students had higher interests($8.63{\pm}1.67$) than male students ($7.45{\pm}2.03$) in nutrition knowledge(p=.000<.001). By investigating the use of nutrition knowledge in everyday life, our research indicated that the actual use of nutrition knowledge was less. To encourage students to persue dietary lives addressing the concerns confirmed above, the following needed to occur. 1) Provide them nutrition information for the main processed foodstuffs encountered when dining out(breads, cakes, cookies, and carbonated beverage). 2) Teach them to read food nutrition labels. 3) Help them find a lifestyle connection through lasting self-management methods and the generation of social support. Accordingly, this required developing effective and practical nutrition education programs that considered regional characteristics and gender differences. The most important factors considered during nutrition education program development were the need for motivation and ongoing education by stage of change, rather than temporal education through specific problem analysis, in order that those being educated may bring about a change of behavior by themselves. Therefore, from this study, we have suggested the use of multilateral operating strategies for successful nutrition education. In addition the phase model of behavior change should be applied. Our programs were aimed at self owned nutritional management so that students could master their own methods for acquiring skills and enjoying dietary life. The research may be summed up as follows. First, the purpose of education at the recognition stage of change was to attempt motivation for nutrition improvement, by analyzing the problems such as food buying habit and the main purchasing viewpoints when dining out. Second, the purpose of education at the action stage of change was to help students acquire of concrete methods for behavior modification by linking the program to their home as well as to teachers with various activities that suited the situation at school. This was done by analyzing the processes and decisions pertaining to dining out the main processed foodstuffs and principal components, etc. through data and experimental practice. Third, the purpose of education for changing of habits and values, or the maintenance stage, was to investigate the various reasons that undesirable behaviors were induced, and then determine a lasting self-management method as well as how to generate social support. If the nutrition education program developed in this study is utilized on site, someone in the primary role as the nutrition educator and trained specifically in nutrition, can help induce the health promotion in the community as well as lasting dietary management, by executing a link with families in parallel with educating teaching staff and students' parents. In addition, this program can playa role in the government policies related to the health promotion for our youth who are the foundation of our nation and who can enhance our national competitive power.

• 한국학교보건학회지
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• 제4권2호
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• pp.146-158
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• 1991

There is no doubt that the school health education in school health services is the most important component. But the concept and scope of the school health education is still not recognized and accepted satisfactorily in Korea. It is generally accepted that health education is a process of changing of attitude and behavior forward health practice. The term attitude refers to certain regularities on the part of an individual in feelings, thoughts, and predispositions to act toward some aspect of his environment. Attitudes have three components: affective, cognitive, and behavioral. The strategies of attitude change in school health education consist of incentive, justification, and coersion. In this study I explained reinforcement and motivation as the strategies of attitude change. The attitude change is not built in a day. When the teachers give the pupils knowledge, comprehension, or skill through school health education proper to each stage, then the attitude change will be realized.

• 치위생과학회지
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• 제11권2호
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• pp.77-83
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• 2011

본 연구는 개인의 건강행위를 변화단계에 따라 설명하는 범이론적 모델을 적용하여 20대 성인의 정기적 구강검진행위에 대한 변화단계와 의사결정균형과의 관계를 살펴보고자 하였다. 서울 및 경기도에 거주하는 20대 성인 358명을 대상으로 조사 분석한 결과는 다음과 같다. 1. 조사대상자의 성별은 남자가 73.2%, 여자가 26.8% 명이었으며, 나이는 20세에서 24세 까지가 91.9%, 학력은 전문대졸이 74.3%이었다. 전신건강상태는 건강한 편이다가 49.2%, 보통이다가 29.3%, 구강상태는 보통이다가 38.5%, 건강한 편이다가 32.4%이었다. 구강에 대한 관심은 신경 쓰이는 편이다가 43.9%, 보통이다가 34.4%로 조사되었다. 2. 정기적 구강검진에 대한 변화단계에 따른 대상자들의 분포는 계획전단계 22.1%, 계획단계 43.6%, 준비단계 10.6%, 행동단계 13.1%, 유지단계10.6%로 조사되어 76.3%의 성인들은 아직 구강검진을 위해 치과를 방문하지 않았거나 앞으로 1개월에서 6개월 내 구강검진을 위한 치과방문 의도를 가지고 있지 않았다. 3. 의사결정균형 요인과 각 문항의 동의 정도 분석에서 긍정적 요인에서 가장 높게 평가된 항목은 '구강검진은 내 치아에 이득이 된다.' (M=4.26)이며, 가장 낮게 평가된 항목은 '치아건강에 대한 자신감이 생긴다.' (M=3.59)이었다. 부정적인 요인에서 가장 높게 평가된 항목은 '치과에 가면 항상 기다린다.' (M=3.31)이며, 가장 낮게 평가된 항목은 '치과에 가는데 많은 시간이 걸린다.' (M=2.69)였다. 4. 구강검진 단계에 따른 의사결정균형 정도를 분석한 결과 구강검진의 긍정적 요인에서는 계획전단계(P= .000)와 유지단계(P=.000)에서 유의한 차이를 나타내었다. 구강검진의 부정적인 요인에서 역시 계획전단계(P=.024)와 유지단계(P=.028)에서 유의한 차이를 나타내었고 구강검진의 긍정적 요인과 부정적 요인의 차이에 대한 분석에서도 계획전단계(P=.000)와 유지단계(P=.000)에서 유의한 차이를 나타내었다. 범이론적 모델을 근거로 20대 성인들을 대상으로 정기적 구강검진에 대한 행위 변화단계와 의사결정균형과의 관계를 알아보았다. 구강건강증진을 위한 구강건강행위 실천은 근거중심의 이론을 바탕으로 한 프로그램의 개발이 필요하며 범이론적 모델은 행위 변화를 위한 개인의 상황과 인지정도에 따라 적절한 중재전략을 제공하는 유용한 틀이 될 것이라고 사료된다.

• 터널과지하공간
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• 제23권3호
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• pp.203-211
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• 2013

법선응력 수준과 초기 절리면 거칠기를 고려하여 절리면의 전단거동 특성을 고찰하였다. 절리면 전단강도는 순차적으로 법선응력을 증가시키는 다단계 전단시험을 수행하여 측정하였다. 일정한 법선응력 구간에서의 다단계 전단시험을 반복적으로 수행하여 전단파괴 기준선을 산출하였으며, 기준선의 순차적인 변화양상을 고찰하여 전단강도정수인 점착력과 마찰각의 2가지 변화 형태를 도출하였다: type 1 - 점착력 감소 및 마찰각 감소, type 2 - 점착력 감소 및 마찰각 증가. 편마암, 화강암 및 셰일의 3가지 암종별 전단강도정수 변화양상을 고찰하였으며, 순차적 전단거동 과정에서 절리면의 초기 거칠기가 전단강도 변화에 미치는 영향도 분석하였다.

• Applied Microscopy
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• 제46권1호
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• pp.45-50
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• 2016

Iron containing a high amount of chromium is known to be inferior to ductility due to ${\sigma}$ phase formation so that it is generally difficult to apply the plastic deformation process although the alloy possesses a superior characteristics of an excellent corrosion resistance. In this study, Fe-50mass%Cr alloy was melted using high purity powder and the deformation behavior has been investigated by cold rolling and tensile test. The tensile test yielded that the alloy revealed a serration at an early stage of tensile deformation and then the serrated flow vanished to change to a normal work hardening flow at the later stage. The former was governed by twin formation process, the latter by dislocation multiplication one, bringing about a high ductility of 20% or over. The reduction ratio in cold rolling was attained as high as 90%, thus the high corrosion-resistant alloy is able to possess a high ductility.

• 한국식생활문화학회지
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• 제23권1호
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• pp.130-137
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• 2008

If we may practice the nutrition education planned on the basis which carefully grasped the inappropriate behavioral determinants of middle-school students, it might be an effective method achieving the change in perception and behavior improving the distorted perception about the ideal body shape, so we are to suggest the 8 week program of body shape perception improvement for successful nutrition education as follows. The body shape perception improvement program is a step-by-step group consulting program. At the introduction stage, we let them understand the meaning of true beauty and body change of teenage period and forming of sexual identity. At the stage of perception conversion, we let them have the opportunity to observe the status of body perception of the teenager and self-observation. At the stage of correction, we let them criticize the distorted body image in the society with mass media at the same time with the self-reflection. At the stage of maintenance and evaluation, we suggested the behavior guidance while preparing it. Setting this as the basis, we applied the contents such as the evaluations through cultural sharing events making somethings while directly participating. As the target groups to practice education were middle school students, we considered the learning level and behavioral features of the middle school students, and composed the programs including the methods such as role play, watching real things, media production, discussions and experiences. If the program of body shape perception improvement developed at this study could be utilized at the field of schools, the teenagers can change their ways of thought naturally avoiding the view about unified appearance rightly perceiving negative self-image that the teenagers can have and if the group consulting can be practiced regularly at each school, many students may experience the change in perception, so it might solicit the improvement of health of the families and local societies as well as that of the individual student.

• 보건교육건강증진학회지
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• 제26권1호
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• pp.63-80
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• 2009

Objectives: This study identified how personal characteristics, healthy behavior and social capital might influence on physical activity of adults. Methods: This study used data from the health survey of a city of Korea. We surveyed 1,000 adults sampled by stratified sampling methods from 67,889 households. Outcome variable was the stage of physical activity which was broken into 5 categories. Sociodemographic factors, healthy behavior, self-rated health status and social capital were used as control variables. Sociodemographic factors included age, sex, educational status, economic status measured by deprivation score, residential period within survey city. Social capital was measured by Integrated Questionnaire for the Measurement of Social Capital (SC-IQ). This study used chi-square test and ordered logistic regression models to examine the associations between independent variables and physical activity. Variables were added to the regression model in three groups using a hierarchical approach. Results: Physical activity was significantly more likely to become active if they have higher educational status, healthier behavior. Among the six dimensions of SC-IQ, only "groups and networks" that is structural dimensions of social capital and "trust and solidarity" that is cognitive dimensions of social capital were significantly related to physical activity of adults. We found that a person having higher density of membership and having larger size of networks showed the high possibility of active physical activity. A person having high solidarity was significantly associated with physical activity, but general trust was inversely related to physical activity. Output dimensions of social capital did not show significant relationship to physical activity. Conclusion: We found that social capital is useful concept to explain health behaviors like physical activity. However we must consider social, cultural and political context of the study to evaluate the effect of social capital to health status and health determinants and to capture the exact meaning of relationship between them. We suggest further researches to refine the concept of social capital and to explain the relationship of social capital to diverse health determinants.

• 한국농공학회논문집
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• 제56권6호
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• pp.63-73
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• 2014

In this study, the large scale test was performed to investigate the behavior of failure on the embankment and spillway transitional zone by overtopping. The pore water pressure, earth pressure, settlement and failure behaviors according to several reinforcing method were compared and analyzed. The pore water pressure showed a small change in the spillway transition zone and core, indicating that the riprap and geotextile efficiently reinforced the embankment, but non-reinforcement showed a largely change in pore water pressure. The earth pressure by riprap and geotextile at upstream slope and bottom core increased rapidly with the infiltration of the pore water by overtopping. And the earth pressure at crest showed a smally change due to effect of the inclined core. A settlement by riprap showed a small change and the geotextile decreased a rapidly due to failure of crest. The width of failure by riprap at intermediate stage (50 min) showed a largely due to sliding of crest. But, the width and depth of the seepage erosion after the intermediate overtopping period (100 min) were very small due to the effect of riprap than geotextile and non-reinforcement which delayed failure. It has the effect that protect reservoir embankment from erosion in the central part. The pore water pressure at the spillway transition zone due to overtopping increased a rapidly in the case of non-reinforcement, but the reinforced methods by geotextile and riprap showed a smally change. Therefore, the reinforced method by riprap and geotextile was a very effective method to protect permanently and the emergency an embankment due to overtopping, respectively.

• 디지털융복합연구
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• 제17권1호
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• pp.457-465
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• 2019

본 연구의 목적은 양육시설 아동을 위한 보편적 긍정적 행동지원 모형을 개발하는 것이다. 이를 위해 55명의 양육시설 종사자 직원을 대상으로 PBS에 관한 요구도를 조사한 결과, 응답자의 76%가 문제행동 예방에 PBS가 필요하며, 인성교육의 대안이라고 응답하였고, 70% 정도가 시설에서 PBS를 운영해 볼 생각이 있다고 응답하였다. 구체적인 모형을 구성해보면, 준비단계에서는 PBS 팀 구성 및 직원교육, 기대행동선정, 현재 행동의 기초선 측정, 보편적 PBS환경을 구축하기를 제안한다. 실행단계에서는 사회적 기술교수, 강화실시하기, 자기행동 목표정하기와 행동점검, 문제행동학생지도, 모니터링 방안을 포함한다. 마지막으로 중재/전-후-유지기 간의 목표행동 변화측정, 사회기술 및 학업성취도 변화, 사회적 타당도 등을 측정하는 효과평가단계를 제안한다. 이 모형을 양육시설 아동들을 대상으로 적용함으로써 문제행동의 감소, 바람직한 행동의 증진과 동시에 아동들을 지도하는 종사자들의 효능감도 향상시킬 수 있을 것으로 기대한다.