• 한국도로학회논문집
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• 제14권1호
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• pp.25-34
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• 2012

급속한 경제성장은 대규모 도로건설 및 물류에 필요한 차량의 대형화 및 고속화를 유도하였으나, 이로 인해 발생하는 대기오염 및 자동차의 소음, 진동은 사회적 문제로 대두되고 있는 실정이다. 기층용 콘크리트 블록은 Helmholtz Resonators 이론을 접목시킴으로써 차량의 타이어 파열음과 차량음 등을 흡수하여 소음을 현저히 줄이는 기능을 보유하고 있어 접속도로, 아파트 단지내 도로, 주택가 도로 등 소음발생이 높은 지역에 적용한다면 소음저감에 대한 사회적 요구를 충족시킬 수 있다. 본 연구에서는 2-layer 아스팔트포장과 기층용 콘크리트 블록의 복합식 공법으로 일반 콘크리트 블록과 기층용 콘크리트 블록의 흡음효과 시험을 실내 시험으로 실시하였다. 시험 조건으로는 홀 사이즈, 간격, 깊이가 결정된 시편에 각 차종별 초기소음을 다르게 주어 소음저감효과를 분석 하였다. 2-layer아스팔트 표층과 콘크리트블록을 이용하여 차량소음크기, 시편크기, 측정거리, 홀의 형상 및 크기에 따른 데이터를 분석한 결과 소음저감효과는 탁월했으며 약 4dB에서 최대 9dB 정도 감소시킨 것으로 나타났다.

• 대한수학교육학회지:학교수학
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• 제12권4호
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• pp.585-604
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• 2010

본 연구에서는 나눗셈의 도입시 이용되는 두 가지 의미인 포함제와 등분제에 대한 초등학생 및 예비초등교사의 이해에 대해 조사하였다. 역대 교육과정 및 그에 따른 교과서에서 나눗셈을 도입하는 상황으로 양자를 다루어왔지만 그 구별을 어느 정도로 명시적으로 다루었는가 하는 것은 시기에 따라 변화되어 왔다. 특히 현행 2007년 개정교육과정에 따른 교과서에서는 두 가지 의미에 따라 나눗셈을 별도로 정의하고 몫의 의미에 대해서도 명시적인 언어적 설명을 추가하는 등 이전과 다른 특징을 보여준다. 계산 기능뿐만 아니라 연산의 의미 이해를 강조하는 수학교육 경향의 한 단면으로 간주되는 이러한 의도가 학생들에게 얼마만큼 수용되고 있는지 알아보기 위해 초등학교 3학년 학생을 대상으로 질문지를 적용하여 그 결과를 분석하고, 또한 두 상황의 명시적인 구별 가능성을 타진하기 위한 기초 자료로서 예비초등교사의 이해도를 조사하였다. 결과적으로 현행 교과서의 접근 방식에 대한 재고의 필요성을 확인하고, 나눗셈의 지도를 위한 몇 가지 교수학적 시사점을 도출하였다.

• Genomics & Informatics
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• 제10권3호
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• pp.184-193
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• 2012

Gastric cancer is ranked as the most common cancer in Koreans. A recent molecular biological study about the folate pathway gene revealed the correlation with a couple of cancer types. In the folate pathway, several genes are involved, including methylenetetrahydrofolate reductase (MTHFR), methyltetrahydrofolate-homocysteine methyltransferase reductase (MTRR), and methyltetrahydrofolate-homocysteine methyltransferase (MTR). The MTHFR gene has been reported several times for the correlation with gastric cancer risk. However, the association of the MTRR or MTR gene has not been reported to date. In this study, we investigated the association between the single nucleotide polymorphisms (SNPs) of the MTHFR, MTRR, and MTR genes and the risk of gastric cancer in Koreans. To identify the genetic association with gastric cancer, we selected 17 SNPs sites in folate pathway-associated genes of MTHFR, MTR, and MTRR and tested in 1,261 gastric cancer patients and 375 healthy controls. By genotype analysis, estimating odds ratios and 95% confidence intervals (CI), rs1801394 in the MTRR gene showed increased risk for gastric cacner, with statistical significance both in the codominant model (odds ratio [OR], 1.39; 95% CI, 1.04 to 1.85) and dominant model (OR, 1.34; 95% CI, 1.02 to 1.75). Especially, in the obese group (body mass index ${\geq}25kg/m^2$), the codominant (OR, 9.08; 95% CI, 1.01 to 94.59) and recessive model (OR, 3.72; 95% CI, 0.92 to 16.59) showed dramatically increased risk (p < 0.05). In conclusion, rs1801394 in the MTRR gene is associated with gastric cancer risk, and its functional significance need to be validated.

• 한국언론정보학보
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• 제55권
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• pp.164-183
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• 2011

디지털 컨버전스의 기술 혁신은 언론 부문에서 핵심적인 노동이라고 할 수 있는 기자노동에도 막대한 영향을 주고 있다. 노동과정론에 따르면, 자본주의적 생산양식에서 기술혁신으로 인해 노동자들은 노동에 대한 통제력을 상실해가면서 탈숙련화의 과정을 겪어 왔고, 경영진들은 억압적인 노동조건을 은폐하고 노동자들을 더욱 효율적으로 통제하기 위해 이데올로기적, 정치적 장치들을 도입해 왔다. 이러한 문제의식 위에서 본 연구는 뉴스룸 통합의 기술혁신이 기자노동의 숙련도에 어떠한 영향을 주는지, 또 경영진들이 기자들을 통제하기 위해 사용하는 전략이 무엇인지를 CBS 통합뉴스룸의 사례를 통해 실증적으로 분석하였다. 분석 결과, 통합뉴스룸 도입으로 인해 기자들은 숙련노동에 대한 통제력을 상실해가면서 탈숙련화되고 있었다. 또한, 경영진들은 새로운 뉴스생산관행, 가족주의 노사문화에 대한 노동자들의 동의를 획득해 나갔으며, 내부노동시장 분절화를 통해 기업권력의 강화와 노동사회의 고립화 전략을 취하고 있었다.

• 한국인구학
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• 제34권2호
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• pp.1-15
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• 2011

노년기는 부부가 함께 지내는 시간이 길어지면서 다른 시기보다 부부관계의 중요성이 커진다. 따라서 생애주기상의 다른 단계에서와 마찬가지로, 노년기 부부관계에 대하여 많은 관심과 다차원적인 연구가 요구된다. 그런데 부부관계는 남편과 부인 두 사람간의 관계이기 때문에, 이들 개인이 가지고 있는 본인의 특성뿐만 아니라 배우자의 특성 또한 중요하게 고려해야 한다. 이 연구는 개인과 배우자의 특성을 함께 고려하여, 남편과 부인이 서로에게 어느 정도 만족하는지 그리고 그에 영향을 미치는 요인들은 무엇인지를 비교하고 있다. 이를 위해 '2008년도 전국 노인생활실태 및 복지욕구조사' 자료를 활용하였다. 부부관계 만족도에 대한 순서형로짓분석을 실시한 결과, 남편의 만족도는 부인의 특성에는 거의 영향을 받지 않으며 대체로 자신의 특성에만 따라 차이를 보이고 있다. 한편, 부인의 부부관계 만족도는 본인의 특성뿐 아니라 남편의 특성에 따라서도 뚜렷한 차이를 보이고 있다. 이 같은 결과는 노년기 부부관계에서 부인들의 배우자에 대한 의존성을 의미하며, 여성들의 가족중심적 성향이 반영된 것으로 이해된다.

• 한국광학회지
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• 제16권3호
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• pp.275-286
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• 2005

InGaN LED에서 칩 구조 및 칩마운트 구조에 따른 광추출효율의 변화를 Monte Calo 기법을 이용하여 해석하였다. Simulation을 통해 얻은 중요한 결론의 하나는, InGaAlP 또는 InGaN/SiC LED의 경우에서는 달리, InGaN/sapphire LED의 경우 칩의 측 벽면 기울임 기법의 광추출효율 개선효과가 상대적으로 미미하다는 점이다. InGaN/SiC LED의 경우와는 달리, 기판으로 사용되는 sapphire의 굴절률이 상대적으로 작아서 생성된 광자들이 기판으로 넘어가는데 전반사장벽을 만나게 되어, 많은 광자들이 기판으로 넘어가지 못하고 두께가 매우 얇은 반도체 결정층에 갇히는 현상 때문이다. 동일한 현상은 epi-down 구조의 칩 마운트에서 광추출효율이 크게 개선되지 못하는 원인으로도 작용하게 된다. 광추출효율 관점에서의 epi-down 구조의 InGaN/sapphire LED가 갖고 있는 잠재력을 살리기 위한 방법의 하나는 기판-에피택시 계면을 texturing 하는 것이라고 할 수 있는데, 이 경우 생성된 광자들이 다량기판으로 넘어갈 수 있게 되어 광추출효율이 현저하게 개선된다.

• 한국인구학
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• 제7권1호
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• pp.39-77
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• 1984

It has been well known that the family pjanning programme has a great deal with declining fertility in Korea. The present study was aimed to measure the impact of family planning program me on fertility level. The specific objectives are to overview the demographic changes ncluding fertility declining and to calculate actual number of birth averted during the last 20 years. The data used for the present study was collected from various sources such as service statistics of the government, survey and research reports, and other related papers. The tool used for calculation of birth prevention was "Standard Couple Years of Protection (SCYP) Method" developed by M Gorosh. The major findings are summarized as follows ; Total of family planning acceptors from 1962 to 1982 was 9,556,153. On the basis of this data, total of averted births was calculated for eachcontraceptive Method ; 1.Oral pills, total number of acceptors from 1968 to 1982 was 2.347,259. Estimated number of birth averted was 272 ,303 .70 and the Coefficient of births prevention per acceptor turned out to be 0.114 2.Condoms, total number of birth acceptors from 1962 to 1982 was 2,874,216. Estimated number of birth averted was 220,495.30 and the coefficient of births prevention per acceptor turned out to be 0.077. 3.IUD, total number of acceptors from 1962 to 1982 was 5,101 .650. Estimated number of birth averted was 1,377,584.76 and the coefficient of births prevention per acceptor turned out to be 0.270. 4.Vasectomy, total number of acceptors from 1962 to 1982 was 556,508. Estimated number of birth averted was 626 ,128 .80 and the coefficient of births prevention per acceptor turned out to be 1.125. 5.Tubaligation total number of birth acceptors from 1972 to 1982 was 1 210,775. Estimated number of birth averted was 1 ,117 679.00 and thecoefficient of birtlts prevention per acceptor turned nut to be 0.923. 6.Abortion, total number of acceptors from 1973 to 1982 was 465,525. Estimated number of birth averted was 355 ,283 .60 and the coefficient of births prevention per acceptor turned out to be 0.763.

• 보건교육건강증진학회지
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• 제21권2호
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• pp.117-131
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• 2004

In order to obtain basic data for a health promotion program of hair dressers, the health promoting behavior of some hair dressers was assessed with the related factors such as general characteristics and cognitive-perceptual factors. The subjects were 245 hair dressers working at beauty shops having at least two hair dressers. The data was collected by a questionnaire from October 14 to October 20, 2001. The results were as follows： 1. The mean score of health promoting behavior conducted by the hair dressers was 31.17 out of 50.00 in total score. 2. The score of the health promoting behavior was statistically different according to marriage, on-duty hours, holidays, satisfaction in the job, perceived health status, perceived fatigue, health concept, and self-efficacy (p＜.05), while it was not statistically different according to gender, religious faith, residence, eduation, economic levels, career in the job, average income, medical care insurance, employment insurance, control of fortuity, and control over other persons. 3. The health promoting behaviors in the hair dressers showed positive correlation with self-efficacy and internal control, while it showed negative correlation with control over other people, control of fortuity, health concept, and perceived fatigue. 4. The Regression analysis results of the questionnaire showed that perceived fatigue, health concept and office hours were significant factors but the age, the fact of being single or couple, position at the job, holidays, satisfaction of the job, self-control and stresses from other people and self-efficiency appeared insignificant. In conclusion, the hair dressers with less perceived fatigue and better cognitive health concept and short duty hours showed better health promoting behavior. So, In order to conduct health promoting behaviors of hair dressers, the method will need to control of working time and perceived fatigue.

• 대한가정학회지
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• 제26권3호
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• pp.209-224
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• 1988

The purpose of this study is to investigate the relations between spouse's self-disclosure and marital adjustment. A measurement tools used for this study are self-disclosure scale, which was adapted and reproducted from Jourard's Self-Disclosure! Questionnaire(JSDQ), and marital adjustment scale, which was modified and supplemented form Dyadic Adjustment Scale (D.A.S). developed by Spanier. The subjects were 154 married couples dwelling in Seoul and questionnaires are recorded separately by both spouses. Statistical methods such as frequency, percentage, mean, standard deviation, one way ANOVA and pearson correlation were used for data analysis. The results of this study are as follows; 1) For husband, self-disclosure degree was significant difference according to level of education. That is, the more husband was higher level of education, the more husband tended to disclose to wife. 2) Among the variables to have influence on the marital adjustment, level of education and marriage pattern had influence on wive's martial adjustment and family income and marriage pattern had influence on husbands' marital adjustment. 3) Wives were higher disclosed than husbands and wives were more disclosed than perceived husbands' disclosure. 4) There were positive correlation between the self-disclosure of husbands and the marital adjustment of wives. (r+.3872, p<.005) And there were positive correlation between the self-disclosure of wives and the marital adjustment of husbands. (r=.4997, p<.005) 5) For wives, the perception of husbands' disclosure correlates with wives' marital adjustment. (r=.4592, p<.005) For husbands, the perception of wives' disclosure correlates with husbands' marital adjustment.(r=.5610, p<.005) From this results, full and honest self-disclosure is needed for high marital adjustment of a married couple. In the future, a study on the relationship between self-disclosure and marital adjustment is need to various measure of many subject.

• Human Ecology Research
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• 제55권4호
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• pp.441-450
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• 2017

Childcare related studies have focused on the characteristics of care work, policy aspects, user family satisfaction, and job satisfaction of childcare helpers. But there have been few studies on family system characteristics that support childcare givers. Thus, this study conducted on the topic, "How to characterize the family resilience of long-term childcare givers?" The subjects belong to a healthy family support center in U. City, who belong to a group with an income in the top 20 % of about 20 persons working for more than 3 years. In an interview, qualitative questions were used Walsh's family resilience. The results are as follows. First, they had economic hardship, but their family would stand together and build up a family's power based on the couple's faith. They had a family role model based on their parents' family that included inherited maternity qualities from their mother. Second, the flexibility of the family organization changed to autonomous or co-role type and the connectivity. Especially, they appear as a family's leader. Third, their family communication was active, shared-care, responsible and passionate with family affection and understanding. The conclusions results are as follows. Participants were high school graduates as well as had work experience. They were characterized by positive family energy, a family belief system, family-based resources, flexibility, connectivity, open family communication and expression skills. Therefore, it can be suggested that it is necessary to check the family's resilience during an interview for the reliable, long-term supply of human resources for childcare activities.