• 대한방사선치료학회지
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• 제10권1호
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• pp.11-22
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• 1998

The absolute absorbed dose can be determined according to the measurement conditions ; measurement material, detector, energy and calibration protocols. The purpose of this study is to compare the absolute absorbed dose due to the differences of measurement condition and calibration protocols for photon beams. Dosimetric measurements were performed with a farmer type PTW and NEL ionization chambers in water, solid water, and polystyrene phantoms using 6MV photon beams from Siemens linear accelerator. Measurements were made along the central axis of $10{\times}10cm$ field size for constant target to surface distance of 100cm for water, solid water and polystyrene phantom. Theoretical absorbed dose intercomparisons between TG21 and IAEA protocol were performed for various measurement combinations on phantom, ion chamber, and electrometer. There were no significant differences of absorbed dose value between TG2l and IAEA protocol. The differences between two protocols are within $1\%\;while\;the\;average\;value\;of\;IAEA\;protocol\;was\;0.5\%$ smaller than TG2l protocol. For the purpose of comparison, all the relative absorbed dose were nomalized to NEL ion chamber with Keithley electrometer and water phantom, The average differences are within $1\%,\;but\;individual\;discrepancies\;are\;in\;the\;range\;of\;-2.5\%\;to\;1.2\%$ depending upon the choice of measurement combination. The largest discrepancy of $-25\%$ was observed when NEL ion chamber with Keithley electrometer is used in solid water phantom. The main cause for this discrepancy is due to the use of same parameters of stopping power, absorption coefficient, etc. as used in water phantom. It should be mentioned that the solid water phantom is not recommended for absolute dose calibration as the alternative of water, since absorbed dose show some dependency on phantom material other than water. In conclusion, the trend of variation was not much dependent on calibration protocol. However, It shows that absorbed dose could be affected by phantom material other than water.

• 한국산학기술학회논문지
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• 제19권10호
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• pp.475-482
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• 2018

이 논문은 중학생의 개인특성에 따른 부모애착 관계와 부모애착이 진로성숙도에 미치는 영향을 알아보고자 하는 것이다. 연구대상은 충남 아산에 위치한 00중학교 1-3학년 학생이다. 개인특성은 성, 학년, 성적, 부모의 학력, 경제수준이며, 부모애착은 상호신뢰, 소외, 의사소통 이다. 진로성숙도는 결정성, 목적성, 준비성, 독립성, 확신성으로 분류하였다. 연구결과 개인특성에 따른 부모애착의 관계에서는 성, 성적, 부모학력, 경제수준의 요인에서 모두 유의미한 차이를 보였다. 부모 중에 모의 애착에서 남학생보다는 여학생이 더 높게 나타나 성별의 차이를 보였으며, 성적은 부모 모두에서 부모의 성적이 높을수록 애착이 높게 나타났고, 경제수준은 부모 중에 부에서만 경제수준이 높을수록 애착이 높게 나타났다. 그리고 부모애착이 진로성숙도에 미치는 영향에서, 소외는 부모 중에 부에게서만 부(-)적인 영향을 미치는 것으로 나타났으며, 상호신뢰와 의사소통은 모두 부모 중에 모에서만 정(+)적으로 진로성숙도에 영향을 미치는 것으로 나타났다. 또한 진로성숙도의 하위변인 중 확신성을 뺀 결정성, 목적성, 준비성, 독립성에서 유의미한 결과를 보였다. 결정성은 모의 의사소통이 목적성은 모의 상호신뢰가 유의미한 영향을 주었고 준비성은 부의 상호신뢰와 모의 의사소통에서 독립성은 부의 부(-)적 소외와 모의 정(+)적 상호신뢰가 진로성숙도에 영향을 미치는 것으로 나타났다. 이러한 결과는 청소년시기 중에 사춘기를 겪는 중학생들의 부모와의 관계 진로성숙에 대한 행동심리를 이해할 수 있는 참고자료가 될 수 있다고 사료된다. 단 특정 지역과 소수의 중학생을 표본으로 진행한 연구라는 한계점이 있다.

• 한국직업건강간호학회지
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• 제8권1호
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• pp.56-67
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• 1999

This study was designed to identify the relationships of role-conflict and role-overload, coping strategies, and stress response of clerical workers. The subjects were 115 clerical workers from two company. The instruments were the role-conflict and role-overload scale developed by Lee(1989), coping scale developed by Latack(1986), and the stress response scale developed by Chang(1993). Analysis of data was done by descriptive statistics, Cronbach's $\alpha$, Pearson correlation coefficietnt, ANOVA. The results of this study were summarized as follows ; 1. The average score for the level of stress response was $83.6({\pm}9.1)$. The high risk stress group was 86.1% of the clerical workers, the latent stress group members was 13.9%, and healthy group was 0%. The overall stress level was very high. 2. Considering the coping strategies by sociodemographic factors, the use of control coping strategies showed significant differences by work-time. The use of symptom management coping strategies showed significant differences by sex, age, married status, year of career, pay, and type of work. The organizational coping strategies showed significant differences by year of education and type of work. 3. The clerical workers who had worked below 44 hours per week complained significantly lower stress response(F=4.942, p<.05). 4. Above 65% of all respondents answered that they needed all of organizational level coping strategies. 5. The role-confilct positively related to escape and organizational level coping strategies(r=.562, r=.495, p<.05). The role-overload didn't related to individual level coping strategies, but positively related to organizational level coping strategies(r=.320, p<.05). 6. The control coping strategies and the escape coping strategies positively related to symptom management, organizational level coping strategies(r=.409, r=.324, r=.316, r=.339, p<.05). 7. The relationship between role-related stress and stress response revealed positive correlation(r=.482, r=.431, p<.05), and the relationship between stress response and control, symptom management coping strategies revealed negative cor-relation(r=-.3204, r=-.3146, p<.05). In conclusion, this study revealed that relationship of role related stress, coping strategies, stress response was statistically significant. The result of this study support that coping strategies vary across situation of stress. Based on survey results, future studies should consider coping strategies in specific stress situation and concept of symptom management coping strategy. Also organizational or training interventions could be developed and initiate to help to increase the use of adaptive coping strategies in light of individual and situational differences.

• 한국산학기술학회논문지
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• 제18권6호
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• pp.343-355
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• 2017

본 연구의 목적은 성별에 따라 한국 청소년의 개인적, 가족적 및 환경적 특성과 수면충족감 정도를 비교하고, 개인적, 가족적 및 환경적 특성과 주관적 수면충족감과의 관련성을 파악하기 위함이다. 본 연구는 2016년 제 12차 청소년건강행태온라인조사의 원시자료를 활용하였고, 남학생 33,803명, 여학생 31,725명, 총 65,528명의 자료를 분석하였다. 연구결과, 수면충족감을 나타낸 비율은 남학생 33.4%, 여학생은 19.5%로 나타났다. 남학생과 여학생 모두, 개인적 특성은 우울경험, 자살생각, 학업성적, 스트레스, 주관적 행복감, 주관적 건강인지, 음주 및 흡연, 약물 경험, 알레르기비염 및 아토피피부염 진단여부, 가족적 특성은 경제 상태, 부모님 학력, 주거형태, 환경적 특성은 학교급, 학교유형, 고민상담자 유무가 주관적 수면충족감에 영향을 미치는 요인으로 나타났다. 개인적 특성 중 아침식사 빈도와 천식 진단 여부는 남학생에서만, 신체활동 여부는 여학생의 수면충족감에만 영향을 주는 것으로 나타났다. 개인적 특성의 정신건강이 청소년의 주관적 수면충족감에 가장 큰 영향을 주는 것으로 나타났다. 그러므로, 한국 청소년의 주관적 수면충족감을 증진시키기 위한 간호 중재는 성별에 따른 차이를 고려해 적용해 나가야 할 것이다.

• 보건교육건강증진학회지
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• 제1권1호
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• pp.37-56
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• 1983

It is well known that smoking habit is hazardous to health, especially for juvenile. The present study on smoking behavior of high school students in Seoul has two major objectives. The first objective is to find out the smoking behavior of high school students in Seoul. Toward this objective, individual's smoking experience has been examined as ever smoking and never smoking. The second objective is to determine the variables associated with their smoking behavior at the individual, family and school environment levels. For the data collection, the survey was carried out for the four high schools in Seoul from September 15 through October 15, 1982. The major findings are summarized as follows: 1. Smoking behavior of the students 1) Out of 1,278 respondents, 30.2% of them were found to be current smokers and 29.3% of them were former smokers. This implies that around 60% of school students in Seoul have experienced smoking. 2) A significant differences in the current smoking rates between two types of the school students were shown as 19.3% for day-time school and 42% for night-time school. 3) In terms of the current smoking behavior, the students who don't live with parents were higher in smoking rate than those of the living with parents. 2. Attitudes and knowledge about smoking 1) Attitudes of students toward smoking in high school days were shown that around 17% of them agreed with it and around 64% of them disagreed with it. 2) Around 99% of the respondents answered that their smoking is harmful for health. A source of the information about negative effects of smoking on health was 'Radio and TV' (23.9%) as the most influential, 'school teacher' (20.9%), 'Newspaper' (18.2%) and so on. 3. Behavioral analysis for the current smokers 1) The factors affected for motivation in the first smoking were 'curiosity' (59.7%), 'temptation of friend' (19.7%), 'resistance feeling, (7.1%), 'merely interest and pleasure' (6%) respectively. 2) The time of the first smoking was 'third grade of Junior-high school' (31.5%) as highest, 'first grade of Senior-high school' (23.7%) and 'second grade of Junior-high school' (14.7%). 3) An average daily number of cigarettes consuming of current smokers was seven cigarettes. 4. Family and school-mates influences on individual's smoking behavior 1) The data revealed a significant relationship between student's smoking and their parent's smoking behavior. Around 75% of the students whom both parents are smoking have experienced cigarette smoking. It was found that the individual's smoking behavior was influenced by his sibling. Around 65% of the students whom brothers are smoking have experienced cigarette smoking. 2) The 'Smoking-Index' of friendship network or a group explained individual's smoking behavior in the group. The result of dyad analysis of smoking behavior in the friendship network showed that a high score of 'Smoking-Index' tended to be explained an adoption of smoking behavior at the individual level in the group. on the other hand, a low score of 'Smoking-Index' explained non-smoking behavior in the group.

• 한국산학기술학회논문지
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• 제18권6호
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• pp.547-557
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• 2017

본 연구는 전문대학생들의 학습참여에 관한 학습과정 수준이 성별, 수업연한, 계열, 학점에 따라 어떠한 차이가 있는지를 비교 분석하였다. 연구대상은 G시 소재 K전문대학 정규교육과정 재학생들 중 2015학년도 2학기 학습과정 설문조사 참여에 응답한 재학생 총 684명이었다. 측정도구는 전문대학 학습과정 분석 척도를 수정 및 보완하여 사용하였다. 연구방법은 빈도분석과 성별, 수업연한, 계열, 학점에 따라 전문대학생들의 학습과정 수준 차이를 살펴보기 위하여 일원배치 분산분석과 사후검증을 실시하였다. 연구결과는 첫째, 성별에 따른 전문대학생의 학습과정은 하위요인 중 수업 외 학습활동, 수업 중 학습활동, 학습성과, 대학시설서비스에서 유의한 차이가 있었다. 둘째, 수업연한에 따른 전문대학생의 학습과정은 하위요인 중 수업 외 학습활동, 수업 중 학습활동, 수업만족도, 대학시설서비스에서 유의한 차이가 있었다. 셋째, 계열에 따른 전문대학생의 학습과정은 하위요인 중 수업 외 학습활동, 수업 중 학습활동, 학습 상호작용, 학습성과에서 유의한 차이가 있었다. 넷째, 학점에 따른 전문대학생의 학습과정은 학습과정과 전체 하위요인(수업 외 학습활동, 수업 중 학습활동, 수업만족도, 학습 상호작용, 학습성과, 대학 시설 서비스)에서 유의한 차이가 있었다. 마지막으로 본 연구결과에 대한 논의 및 함의를 기술하였다.

• 정신신체의학
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• 제22권2호
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• pp.71-78
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• 2014

연구목적 알츠하이머병 환자들의 행동심리증상(BPSD)은 임상적인 문제들을 일으켜 결국 기능의 감퇴, 간병인 스트레스, 입원, 사망률의 증가를 가져온다. 최근의 연구는 성별차이가 BPSD에서 중요한 역할을 한다고 보고하고 있으나, BPSD와 성별 사이 연관에 대한 국내 연구는 시행된 적이 없었다. 이에 본 연구는 알츠하이머병 환자들의 BPSD가 성별 차이에 의해 영향을 받는 것인지를 검증해 보고자 실시하였다. 방 법 면담과 인지기능평가를 통해 DSM-IV 진단기준에 의하여 알츠하이머병으로 진단받은 98명의 환자들이 본 연구에 참가하였다. 간이정신상태검사(MMSE), 임상치매평가척도(CDR), 전반적 퇴화척도(GDS), 한국형 신경정신행동검사(K-NPI)를 사용하여 인지기능 및 BPSD를 평가하였다. 성별 차이를 확인하기 위해서 독립 t 검증을 사용하여 분석하였으며, MMSE, CDR, GDS와 NPI 사이의 관련성을 살펴보기 위해 피어슨 상관분석을 사용하였다. 결 과 알츠하이머병 환자들의 BPSD에서 통계적으로 유의미한 성별 차이는 관찰되지 않았다. MMSE와 NPI 총점, 그리고 NPI 하위영역인 환각과 유의한 상관관계를 보였으며, CDR의 경우 NPI 총점, 무감동/무관심, 과민/불안정과, GDS의 경우 NPI 하위영역인 환각과 유의한 상관관계를 나타내었다. 결 론 본 연구결과 우리나라 알츠하이머병 환자들의 BPSD에서 성별의 차이는 나타나지 않았지만, 추후 알츠하이머형 치매의 BPSD가 성별 차이에 의한 것인지 혹은 개인 차에 의한 것인지를 더 명확하게 밝혀내기 위한 광범위하고 지속적인 연구가 필요할 것으로 생각된다.

• Journal of Forest and Environmental Science
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• 제33권1호
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• pp.8-21
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• 2017

The objective of this study is to identify the individual characteristics and the elements of social capital hence a suitable design of social capital reinforcement can be proposed to promote a sustainable community-based mangrove management. The research conducted in three villages that were selected based on mangrove ecological differences in Lampung Province, Indonesia. Qualitative data was collected through field observation and in-depth interviews with key informants. The results showed that the population in the three villages dominated on productive ages, worked as farmers, and less educated (only a half of the population had fulfilled the basic education standard of Indonesia). The study results also indicated that the social capital in the communities showed minimum condition of interpersonal attachment and cooperation. This condition was derived from the attitude of the people who only took personal benefit without concerning to others' welfare. Many programs conducted by government to ensure the conservation of mangroves were project-oriented with minor participation of community. The minor participation might also contributed to the minimum of social capital in the community. To improve social capital, the communities should strengthen mutual trust based on mutual benefit to increase members' participation in mangrove activity.

• 말소리와 음성과학
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• 제10권1호
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• pp.1-7
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• 2018

Categorical production in language processing helps speakers to produce phonemic contrasts. This categorization and production is utilized for the production-based and imitation-based approach in the present study. Contrastive signals in speakers' speech reflect the shapes of boundaries with categorical characteristics. Signals that provide information about lexical pitch accent contrasts can introduce categorical distinctions for productive and cognitive selection. This experiment was conducted with nine North Kyungsang speakers for a production task and nine North Kyungsang speakers for an imitation task. The first finding of the present study is the rigidity of categorical production, which controls the boundaries of lexical pitch accent contrasts. The categorization of North Kyungsang speakers' production allows them to classify minimal pitch accent contrasts. The categorical production in imitation appeared in two clusters, representing two meaningful contrasts. The second finding of the present study is that there are individual differences in speakers' production and imitation responses. The distinctive performances of individual speakers showed a variety of curves. For the HL-LH patterns, the categorical production tended to be highly distinctive as compared to the other pitch accent patterns (HH-HL and HH-LH), showing that there are more continuous curves than categorical curves. Finally, the present study shows that, for North Kyungsang speakers, imitative production is the core type of categorical production for determining the existence of the lexical pitch accent system. However, several questions remain for defining that categorical production, which leads to ideas for future research.

• 대한의생명과학회지
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• 제23권2호
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• pp.89-95
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• 2017

Tuberculosis (TB), mainly disseminated by infection of the respiratory tract, remains an unsolved community health problem by Mycobacterium tuberculosis (MTB). However, because of the different susceptibility to MTB, people infected with MTB do not all develop TB. These differences of disease arise from individual genetic susceptibility as well as the property of the microorganisms itself. CD226, one of the genetic factors that influences TB, interact with its ligand PVR and ITGB2. It is induced various cellular responses that contribute multiple innate and adaptive responses. In a previous study, CD226 enhanced immune efficacy induced by Ag85A DNA vaccination that is secreted protein by MTB. The aim of this study was to investigate the association between six genetic polymorphisms of CD226 gene and TB status with Korean population. Our results show that two SNPs of CD226 were identified to associate with tuberculosis. The highest significant SNP was rs17081766 (OR=0.70, CI: 0.54~0.90, $P=5.4{\times}10^{-3}$). According to this study, polymorphisms of CD226 gene affect the outbreak of TB in MTB-infected patients. It is suggested that polymorphism of other genes also associated with immune responses results in susceptibility to TB. The results from this study suggest that not only the characteristics of the microorganism itself but also the genetic background of the individual may affect progression of TB in MTB-infected patients.