• 한국과학예술포럼
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• 제30권
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• pp.33-40
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• 2017

The study has been initiated on the background of rapidly changing environment, and from the perspectives that new ecological systems are continuously generated accordingly in various fields. Recently, ICT platform, which is the platform related to information communication, has drawn much attention, and many tools are being made that can design and implement documents in a specific on-line space by utilizing UI/UX authoring tools for on-line contents sharing platforms which are public platforms for industrial and educational uses. Following these trends, actual building environment for 'XElF', a newly developed on-line contents sharing platform, and actual design proposal for UI/UX authoring tools will be described according to the sequences of building the platform. Before this design proposal is actually utilized in the future, opinions have been collected from related persons through an actual survey. Efforts are being made to reduce problems, which can be generated in the future in the actual on-line contents education environment, through the results of the study so that the platform can be produced without errors. The final results for this matter are planned to be posted by papers in the future.

• 한국인쇄학회지
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• 제26권1호
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• pp.39-50
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• 2008

We have manufactured Ag pastes for gravure printing by adding different solvent contents. Then the gravure printability and properties of conductive patterns gravure-printed by the different rheology characteristics of pastes were investigated. The dispersity of pastes was increased and the viscosity and shear rate dependence of viscosity for pastes were decreased by increasing the solvent content. Also storage modulus G', loss modulus G" and angular frequency value when G" starts to be bigger than G' of pastes were increased by decreasing the solvent content. These mean a flow drop of paste. As a result of gravure printing using two plates which have different line counts(175line and 350line), conductive patterns printed using 175line were spreaded more but Ag packing, thickness and conductivity of the conductive patterns were better than those printed using 350line. And the spread values of conductive patterns were increased with solvent contents but the best properties for Ag packing, surface roughness and conductivity of the conductive pattern were obtained by paste (3) which has 550cps of viscosity at $100s^{-1}$ and tan ${\delta}$ > 1 at 10rad/s. As a result of gravure printing using 350 line plate and paste (3), the conductive pattern has $1.2{\mu}m$ of film thickness and $1.9{\times}10^{-5}{\Omega}{\cdot}cm$ of conductivity.

• 종양간호연구
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• 제7권2호
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• pp.119-130
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• 2007

Purpose: The purpose of this study was to analyze the data regarding questions raised by women with breast cancer through Internet counseling in Korea. Methods: The data were collected from one internet web-site, providing counseling by physicians. A total of 617 questions were analyzed by content analysis method. Results: About 90 percent of the counselees were patients themselves. But most of the general and health-related characteristics of them were not known from the data. As a result of content analysis, 617 questions were grouped into 9 major categories. The most common major category was identified as "life after treatment" (212 questions, 34.2%), followed by "chemotherapy" (139 questions, 22.3%) and "hormone therapy" (115 questions, 18.9%). Questions regarding "physical symptoms" were the most frequent one in the major categories of "life after treatment", "chemotherapy", and "radiotherapy", while questions regarding "psychological problems" were the least. Conclusion: The findings of this study indicate that it is important for health professionals to provide continuous on-line informational support to women with breast cancer, even after all the treatment is over, especially focusing on physical symptoms. In addition, off-line program needs to be reinforced to provide emotional support that is not well delivered by on-line program.

• 한국컴퓨터정보학회논문지
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• 제24권9호
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• pp.29-34
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• 2019

In Recently, as the interest in health has increased and the spread of smart phones has become common, the development of smart health care related contents has been active. In this paper, we introduce the design, implementation and effects of game-based content that can make walking exercise fun in the Internet of Things environment. This content calculates the consumed calories by walking the stairs with the Beacon installed, and incorporates games to encourage continuous fun activities. It also provides event functions that enable on-off-line coordination. The goal of this content is to enable busy modern people to exercise lightly, funly, and constantly in the surrounding activity space. The effect of this content has been confirmed through the review of many users participating in offline events. This content is expected to be able to converge with various types of healthcare systems with the expansion of the application space.

• 디지털콘텐츠학회 논문지
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• 제4권1호
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• pp.57-66
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• 2003

본 논문에서는 인터넷 기반에서의 3자(환자, 의사, 약사)간의 상호대화형 원격진료 시스템 구현으로서, 효율적인 진료와 빠른 처리를 위한 전자진료차트 및 자료처리에 관한 내용을 제시하고 있다. 즉, 고가형 시스템, 비호환성 등 기존 원격진료시스템의 문제점을 해결한 저가형이면서, 누구나 참여할 수 있는 웹상에서의 시공간을 초월한 on-line 및 off-line 겸용모드의 지능형 원격진료시스템이다. 데이터베이스는 IIS 4.0 웹서버상에서 ASP와 SQL을 연동한 구현하여 효율적인 자료처리를 위한 시스템 통합과 환자와 의사간의 on-line 상담, 그리고 off-line상에서의 진료와 환자가 지정한 약사로의 처방전 전송 및 조제, 그리고 진료데이터의 저장 및 검색으로 인한 반영구적인 진료데이터저장, 환자 및 의사의 본 진료데이터를 이용한 보다 정확한 진료 및 처방등이 가능하다.

• 대한치과보철학회지
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• 제27권1호
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• pp.143-179
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• 1989

To observe the bonding behavior of palladium-based alloys to porcelain; 1. Pd-Co binary alloy with the higher cobalt content, 2. Pd-Co binary alloy with the lower cobalt content, 3. Pd-Ag-Sn ternary alloy, 4. Pd-Ag binary alloy, 5. Pd-Cu-Au ternary alloy and 6. Pd-Cu binary alloy were made as 6 groups of experimental alloys. Each group of alloy was divided into 4 sub-groups such as one sub-group that was not degassed and three sub-groups that degassed for 5 minutes, 10 minutes and 15 minutes. On each specimen, weight changes after degassing, morphological changes of oxide layer by changing the degassing time, compositional changes at metal-ceramic interface and bond strength of metal-ceramic measured with planar shear test were observed and compared. The results of the present study allow the following conclusions to be drawn: 1. The alloy showing the greatest bond strength was Pd-Cu alloy without gold and bond strength was decreased by alloying gold to them. 2. Although Pd-Co alloy showed the most prominent oxidation behavior, bond strength of them to porcelain was not greatly high by the formation of porosities at metal-ceramic interfaces. 3. Likewise tin, cobalt formed the peaks on line profiles at metal-ceramic interface, however copper did not exhibit such peaks on line profiles. 4. Mainly, oxide layer on Pd-Co alloy was composed with cobalt, and for Pd-Co alloy with higher cobalt content the rise of bond strength was not significant by increased degassing time. 5. On Pd-Ag alloy not containing tin, during degassing for 15 minutes silver content was increased at metal-ceramic interface. 6. As an oxidized element, tin formed the oxide layers that widen their area by increasing the degassing time, while cobalt and copper showed the morphological changes of particle or crystal on oxide layer.

• 한국농공학회지
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• 제14권4호
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• pp.2761-2769
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• 1972

The following results were obtained by the compression test of 3, 7, 14 and 28 days cured lime soil mixtures. The soil used in this test was clayey soil(sand : 20% silt : 45%, clay : 35%) and the rates of hydrated lime mixture for the dry weight of soil were 4, 8, 12, 19 and 20 percents. 1. The optimum moisture content increases and the maximum dry density decreases with the increase of the lime content. 2. The compacted moisture for the maximum strength in lime soil mixture increases with the increase of the lime content and the increase of curing periods. 3. The compressive strength increase of curing periods and its increasing ratio is largest at the 8 percent lime content. 4. The line content for the maximum strength decreases with increase of curing period and the largest strength shows at the 8 percent lime content when the curing period is over two weeks. 5. It seems to depend on the temperature effect that the compressive strength of lime soil mixtures cured in soil shows the lowest value. Accordingly, the effect of curing moisture does not influence to the strength of lime soil mixtures as much as the variation of curing temperature.

• 한국실천공학교육학회논문지
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• 제3권1호
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• pp.84-91
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• 2011

급변하는 산업 환경에 대응하여 보다 경쟁력 있는 공학인의 양성이라는 측면에서 경영 마인드를 함양시키는 공학 소양 교육의 필요성이 대두 되고 있다. 본 연구에서는 공과대학 교육 내실화와 수요자 중심의 공학교육과정 개발, 공학교육인증 획득의 필요성 증대에 부응하여, 산업체에서 요구하는 경영마인드를 갖춘 공학도의 양성을 목표로 공학도를 위한 경영학 교과목 개발 사례를 고찰하였다. 교과목 개발 및 운영전략으로 강좌 간 강의품질 편차의 최소화를 위해 표준화된 온라인 콘텐츠와 교안을 개발하였으며, 학습효과를 극대화하기 위해 온 오프라인 혼합강의를 구현하여 적용하였다. 본 연구의 결과 및 교과내용과 교수방식은 타 공학대학의 공학경영교육 설계 시 참조모델로서 효과적으로 적용될 수 있다.

• 한국학교수학회논문집
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• 제24권1호
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• pp.39-57
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• 2021

본 연구에서는 '점'과 '선'을 '크기' 관념에 주목하여 수학적 분석을 하고, Euclid 기하의 관점에서 한국의 2015 개정 교육과정에 따른 중학교 수학 1의 기본도형 내용영역과 미국 기하(Geometry)의 교과서 서술을 비교하여 분석하였다. 첫째, '점'과 '선분'을 '크기' 관념에 주목하여 수학적으로 분석한 결과, 1) '무한소'의 인정과 배제, 2) '측도론'과 '집합론'에 따라 수학적 관점이 달라질 수 있음을 알 수 있었다. 둘째, '점'과 '선'에 관한 교과서의 서술을 Euclid 기하의 관점에서 분석한 결과, 1) 대부분의 한국의 2015 개정 교육과정에 따른 중학교 수학 1의 기본도형 내용영역에서는 '크기'가 있는 점과 선을 소개 혹은 직접 그리는 학습활동을 제시한 후, 점과 선의 '관계'를 서술하는 방식으로 전개하고 있었으나, 2) 대부분의 미국 기하 교과서에서는 크기가 있는 점과 선을 소개한 후, '무정의 용어'인 점과 선에 대하여 기하에서의 '점은 크기가 없고', '선은 두께가 없음'을 각각 명시적으로 서술하고 있음을 확인할 수 있었다. 이와 같은 고찰을 통해 본 연구에서는 한국의 2015 개정 교육과정에 따른 중학교 수학 1의 기본도형 내용영역에서의 점과 선에 관한 서술이 잠재적으로 Euclid 기하의 관점에 해당하지 않는 수학적 직관을 생성할 가능성이 있으므로 교수학습 과정에서 이에 대한 언어적 표현의 주의가 필요함을 제안하고자 한다.

• Journal of Ginseng Research
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• 제39권4호
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• pp.345-353
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• 2015

Background: Ginseng is a semishade perennial plant cultivated in sloping, sun-shaded areas in Korea. Recently, owing to air-environmental stress and various fungal diseases, greenhouse cultivation has been suggested as an alternative. However, the optimal light transmission rate (LTR) in the greenhouse has not been established. Methods: The effect of LTR on photosynthesis rate, growth, and ginsenoside content of ginseng was examined by growing ginseng at the greenhouse under 6%, 9%, 13%, and 17% of LTR. Results: The light-saturated net photosynthesis rate ($A_{sat}$) and stomatal conductance ($g_{s}$) of ginseng increased until the LTR reached 17% in the early stage of growth, whereas they dropped sharply owing to excessive leaf chlorosis at 17% LTR during the hottest summer period in August. Overall, 6-17% of LTR had no effect on the aerial part of plant length or diameter, whereas 17% and 13% of LRT induced the largest leaf area and the highest root weight, respectively. The total ginsenoside content of the ginseng leaves increased as the LTR increased, and the overall content of protopanaxatriol line ginsenosides was higher than that of protopanaxadiol line ginsenosides. The ginsenoside content of the ginseng roots also increased as the LTR increased, and the total ginsenoside content of ginseng grown at 17% LTR increased by 49.7% and 68.3% more than the ginseng grown at 6% LTR in August and final harvest, respectively. Conclusion: These results indicate that 13-17% of LTR should be recommended for greenhouse cultivation of ginseng.