• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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• pp.136.2-136.2
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• 2011

In this work, we analyzed correlations between life-cycle greenhouse gas (GHG) emissions and life-cycle cost of energy resources. Energy resources studied in this paper include coal, natural gas, nuclear power, hydropower, geothermal energy, wind power, solar thermal energy, and solar photovoltaic energy, and all of them are used to generate electricity. We calculated the mean values, ranges of maximum minus minimum values, and ranges of 90% confidence interval of life-cycle GHG emissions and life-cycle cost of each energy resource. Based on the values, we plotted them in two dimensional graphs to analyze a relationship and characteristics between GHG emissions and cost. Besides, to analyze the technical maturity, the GHG emissions and the range of minimum and maximum values were compared to each other. For the electric generation, energy resources are largely inverse proportional to the GHG emission and the corresponding cost.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.67-74
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• 2022

This study is a theoretical account of HRs requirements in educational institutions in light of the growing influence of digital technology on human rights. It intends to reveal prominent human and civilizational values encapsulated in modern human rights regulations. It dwells on educational and societal requirements for educational inclusion in the school and university curricula in light of changes that have taken place in HRs in the digital age. Relying on the descriptive documentary research design, the study concluded that HRs are inherently moral duties and fixed values. They include the importance of tolerance, freedom, peace, justice, science, work, and equality. Because education is arguably based on human and civilized values, educational foundations require intake of awareness, systematic integration and responsibility from all academic and community institutions, including family and media institutions. The article closes on a note of how technology has impacted human rights in the digital age. It provides implications and recommendations to pedagogies accordingly.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 봄 학술논문 발표대회
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• pp.157-158
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• 2020

In order to calculate construction costs properly, it is necessary to add the weight that reflects different worksite conditions. The implementation of the weight, however, is difficult because it is impossible to determine whether wight should be added in basic work or whether weight values are overlapped. Special worksite conditions further complicate the matter. Furthermore, overlapping implementation of weight values result in overestimation of construction costs. The current study clearly analyzed the weight value items in the current construction cost calculation standards, and analyzed the weight value items included under the basic productivity category to propose an improvement of weight standards. Basically, the estimating standards provide 140 weight value items, with different levels of weight given to each item. Among 1,333 items in the estimating standards, 140 include weight values. Some items have two types of weight values.

• 대한기계학회논문집B
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• 제36권2호
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• pp.145-151
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• 2012

심장 일을 계산하여 혈관질환을 진단하는 방법이 새롭게 대두되고 있다. 이 연구의 목적은 혈관내의 두 지점에서 압력을 측정하여 점도 모델로부터 압력 펄스 및 심장 일을 구하는 수학적 모델을 개발하는 것이다. 심장 일을 측정하기 위해서 커프로부터 구한 혈압과 펄스파에 대한 의료 정보를 활용하였다. 본 연구의 목적은 혈관 내 두 측정점 사이의 펄스파를 이용하여 심장 일을 구하기 위한 수학적 모델의 개발이다. 심장 일은 Casson 및 Hershel-Bulkery 점도모델과 Windkessel 모델을 이용하여 구하였다. Casson 점도 모델과 Hershel-Bulkley 점도 모델을 이용하여 근위부에서의 컴플라이언스 값은 차이가 없으나 원위부에서 값은 큰 차이가 나타났다.

• 치위생과학회지
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• 제7권2호
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• pp.107-112
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• 2007

치위생과 학생들의 치위생 활동과정이나 결과 중에서 중요하게 생각하는 부분을 파악하고 유형화하여 취업지도의 기초자료로 사용코자 광주 전남지역에 개설된 3개 대학 치위생과 재학생을 대상으로 설문 조사한 결과 다음과 같은 결론을 얻었다. 1. 48개로 문항으로 구성된 설문결과 6개 유형으로 직업가치관이 조사되었다. 지위, 보수, 안정, 능력, 기여, 성취로 구분되었고 59.2%의 설명력을 가지고 있었다. 2. 지위요인은 C학교에서, 기타 출신고교에서, 대인관계가 좋을수록, 건강상태가 나쁠수록, 직장경험이 있을수록, 진학권유를 하겠다고 응답한 군에서 의미있게 높았다(p < 0.05). 3. 보수요인은 C학교에서, 저학년일수록, 기타 출신고교에서, 기타방법으로 학비를 조달하는 군에서, 대인관계 및 건강상태가 좋을수록, 직장경험이 있을수록, 진학 권유를 하겠다고 응답한 군에서 의미있게 높았다(p < 0.05). 4. 안정요인은 C학교에서, 저학년일수록, 연령이 낮을수록, 기타 출신고교에서, 직장경험이 있을수록, 진학 권유를 하겠다고 응답한 군에서 높았다(p < 0.05). 5. 능력요인은 C학교에서, 기타 출신고교에서, 대인관계가 좋을수록, 건강상태가 나쁠수록, 직장경험이 있을수록, 진학권유를 하겠다고 응답한 군에서 높았다(p < 0.05). 6. 기여요인은 C학교에서 학년이 낮을수록, 기타 출신고교에서, 장학금으로 학비를 조달하는 군에서, 대인관계를 모르겠다고 응답한 군에서, 건강상태가 나쁠수록, 직장경험이 있을수록, 진학 권유를 하겠다고 응답한 군에서 높았다(p < 0.05). 7. 성취요인은 C학교에서 기타 출신고교에서, 대인관계가 좋은 군에서, 건강상태가 좋을수록, 진학 권유를 하겠다고 응답한 군에서 의미있게 높았다(p < 0.05).

• Journal of Preventive Medicine and Public Health
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• 제24권3호
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• pp.314-327
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• 1991

To evaluate the effects on health by exposure to mixed organic solvents, the author analyzed some labortory findings of blood (hemoglobin, hematocrit RBC, WBC, SGOT, SGPT) and urine (protein, blood, sugar) that were obtained from 722 workers (male:446, female:276) who worked in plywood, painting and shoes factories in Pusan area from January to December, 1990. The result were as follows ; 1. The mean values of each hematologic findings were all within normal limit but there were significant differences at hematocrit, RBC, WBC, SGOT in male and at WBC, SGPT in female at the comparison of the mean values and the distribution according to the normal criteria by type of work. 2. There were no differences in urinalysis(protein, blood, sugar) by type of work. 3. In stepwise multiple regression, analysis of hematologic findings on age, working duration and type of work, regression coefficients on age and type of work were relatively high in male and female sub1, respectively. As a result of this study, it is considered that the measurement of WBC with morphology is significant in hematologic findings and instead of spot urine and urinstix, 24 hours urine and quantitative analysis is required in urinalysis in screening test for healthy status of workers who deal with the organic solvents.

• 한국의류학회지
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• 제12권2호
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• pp.225-235
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• 1988

The effects of surface free energy of substrates on the soiling and on the detergency of the oily soil were studied. The surface tension consisted of dispersion force and polar force components of substrate, oily soil and surfactant solutions were calculated by extended Fowkes' equation. From these values, work of adhesion($W_a$), work of detergency($W_D$), ana residual work of detergency($W_{D,R}$) were calculated. The correlations between these theoretical values of the works and detergency were discussed. MAA grafted PET film was used as substrate, triolein as oily soil and nonylphenol polyoxyethylene ether(NPE) having various mole numbers of oxyethylene adducts and dodecylbenzene sulfonate (DBS) as surfactants. Detergency was estimated by means of radioactive tracer method using $C^{14}-triolein$. The results showed that $W_a$ was decreased with the increase of surface free energy of substrate. In water, $W_D\;and\;W_{D,R}$ were decreased and detergency of tiolein was increased with the increase of surface free energy of substrate. In surfactant solutions, the lower the surface free energy of substrate and the lower oxyethylene adducts of NPE were the more effective on detergency. The detergency of DBS solution was the lowest in the case of ungrafted PET film, but even small increase in surface free energy by grafting showed much increase in detergency.

• 공학교육연구
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• 제16권1호
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• pp.27-34
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• 2013

본 연구의 목적은 전공과 성별에 따른 대학생들의 직업가치관을 분석하기 위한 것이다. 연구 결과 얻어진 결론은 다음과 같다. 첫째, 공학계열과 사회과학계열 대학생들은 직업가치 중 성취와 몸과 마음의 여유를 매우 중시했다. 둘째, 대학생들은 성취, 직업안정, 심신의 여유, 금전적 보상, 인정 영역에 높은 가치를 부여했고, 내재적 가치 지향이 외재적 가치 지향보다 높게 나타났다. 셋째, 두 집단은 봉사, 지식 추구, 애국, 금전적 보상, 인정, 실내활동 영역에서 유의미한 차이를 보였다. 넷째, 성별에 따른 직업가치관 분석 결과 남학생은 심신의 여유, 성취, 직업 안정, 지식추구, 금전적 보상 순으로 높은 가치를 부여했다. 여학생은 금전적 보상, 심신의 여유, 성취, 직업 안정이 높게 나타났다. 다섯째, 봉사, 애국 등의 영역이 낮은 가치 수준에 머무르고 있는 것은 진로교육을 통해 지속적으로 개선해야 할 여지가 있다고 보아진다. 결론적으로 본 연구의 결과는 대학생들의 진로 탐색에 대한 지도와 조언을 위한 교육과정을 구성하고 운영하는 데 있어서 시사점을 줄 수 있을 것으로 기대된다.

• 디지털융복합연구
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• 제18권8호
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• pp.407-417
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• 2020

현대미술은 디지털 매체의 발달로 급격한 변화를 겪고 있다. 디지털 미디어 기반 환경에서 작가들은 관객과 예술적 가치와 경험을 공유하는 새로운 작품들을 제작하고 있다. 이에 본 연구에서는 첨단 디지털 기술과 오브제를 융합시킨 상호작용성에 관한 작품 제작을 하였다. 관람자가 오브제를 터치하면 오브제와 연결된 LED화면이 완성되는 작품이다. 작품 제작에 앞서 이론적 고찰을 위해 학술 논문자료, 국내외 전문서적, 인터넷 분석을 중심으로 연구하였다. 작품 제작은 아두이노를 이용하였고, 작가들이 작품 제작에 응용할 수 있도록 제작 회로와 프로그래밍 소스를 제시하였다. 본 연구는 오브제 작품의 표현에 있어 새로운 가치와 가능성을 제시하는데 의의를 둔다.

• The Journal of Korean Physical Therapy
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• 제10권1호
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• pp.81-98
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• 1998

Isokinetic evaluation of trunk flexors and trunk extensors was performed at $60^{\circ}/sec\;and\;120^{\circ}/sec$ of angular velocity by using cybex 6000TEF Unit on 31 healthy male white workers and 15 post-operative HILD patients with no significant difference in mean age and mean body weight between two groups, and compared each other. The purpose of this study is to obtain the isokinetic normative strength values and endurance latins for Dunk extensors and trunk flexors, and is to provide a guideline for rehabilitation program of post-operative HILD patients. The collected data were analyzed by ANOVA, Duncan's Nyktuoke Range Test, and Pearson correlation coefficiency in PC-SAS program, The results obtained were as follow ; 1. Post-operative subjects has lower isokinetic values than normal subjects in peak torque, peak torque $\%$ by body weight, total work, total work $\%$ by body weight, average power, average power $\%$ by body weight, TAAE of trunk flexors and trunk extensors, and there are significant differences with statistic value in trunk extensors at $60^{\circ}/sec$ and in trunk flexors and trunk extensors at $120^{\circ}/sec$ between two groups(p<0.05). 2. Pest-ooperative subjects has lower values for angle of peak torque than normal subjects in trunk extensors, and there are significant differences with statistic value at $60^{\circ}/sec$ and $120^{\circ}/sec$ between two groups. 3. Post-operative subjects has higher values for endurance ratios than normal subjects in trunk extensors and flexors, but there are no significant differences with statistic value between two groups. 4. Post-operative subjects has higher values than normal subjects in peak torque ratios, total work ratios, average power ratios of trunk flexors to trunk extensors, and there are significant differences with statistic value between two groups(p<0.01). 5. There is significant positive-correlation with statistic valve between peak torque and height and body weight in normal subjects(p<0.05), but Thjere is significant negative-correlation between peak torque of trunk extensor at $120^{\circ}/sec$ and age (p<0.05). 6. There is significant positive-correlation with statistic value between peak torque of trunk flexors and body weight in post-operative subjects (p<0.05), but There is significant negative-correlation between peak torque of trunk extensor add age (p<0.05). In conclusion, post-operative subjects have greater weakness in trunk musculature than normal subjects, especially there is more significant weakness in trunk extensors than in trunk flexors