• 대한가정학회지
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• 제41권2호
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• pp.141-153
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• 2003

The purpose of this study was to analyze and determine the level of the satisfaction and awareness of facilities in child care centers among teachers and parents. Special attention was given to both the indoor and outdoor environments from the viewpoints of both parents and teachers. The subject of this research focused on parents who leave their children at child care centers, and teachers who work for the center. The data was compiled by performing both T-tests and paired T-test. The information was processed by a program called SPSS WIN 10.0. The results were as follows ; 1. (a) With regard to the satisfaction of the external and internal facilities : It was determined that both the play rooms and the wall-pattern arrangements were satisfactory to both the parents and the teachers. (b) Regarding the awareness of the importance of facilities, while the parents focused more on the play rooms and the external environments, the teachers placed more importance on the bathrooms and the play rooms. 2. In the paired T-test that determined whether their individual opinions were different in terms of the satisfaction and awareness of facilities, it was interesting to see that both the parents and the teachers showed significant differences in their opinions and priorities about the porches, the play rooms, the bathrooms and the wall-pattern arrangements. In general, their awareness was much higher than the satisfaction with these facilities. 3. In the T-test that determined whether there were any tendencies in the satisfaction and awareness respectively in the two groups, the satisfaction rate was higher among the parents than the teachers. In terms of the awareness of the importance of the facilities, the teachers rated the bathrooms and the wall-pattern arrangements as a priority.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
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• pp.341-341
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• 2012

Recently, oxide semi-conductor materials have been investigated as promising candidates replacing a-Si:H and poly-Si semiconductor because they have some advantages of a room-temperature process, low-cost, high performance and various applications in flexible and transparent electronics. Particularly, amorphous indium-gallium-zinc-oxide (a-IGZO) is an interesting semiconductor material for use in flexible thin film transistor (TFT) fabrication due to the high carrier mobility and low deposition temperatures. In this work, we demonstrated improvement of flexibility in IGZO TFTs, which were fabricated on polyimide (PI) substrate. At first, a thin poly-4vinyl phenol (PVP) layer was spin coated on PI substrate for making a smooth surface up to 0.3 nm, which was required to form high quality active layer. Then, Ni gate electrode of 100 nm was deposited on the bare PVP layer by e-beam evaporator using a shadow mask. The PVP and $Al_2O_3$ layers with different thicknesses were used for organic/inorganic multi gate dielectric, which were formed by spin coater and atomic layer deposition (ALD), respectively, at $200^{\circ}C$. 70 nm IGZO semiconductor layer and 70 nm Al source/drain electrodes were respectively deposited by RF magnetron sputter and thermal evaporator using shadow masks. Then, IGZO layer was annealed on a hotplate at $200^{\circ}C$ for 1 hour. Standard electrical characteristics of transistors were measured by a semiconductor parameter analyzer at room temperature in the dark and performance of devices then was also evaluated under static and dynamic mechanical deformation. The IGZO TFTs incorporating hybrid gate dielectrics showed a high flexibility compared to the device with single structural gate dielectrics. The effects of mechanical deformation on the TFT characteristics will be discussed in detail.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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• pp.211-216
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• 2006

Within the frame of the MERCOSUR (South Common Market), one of the most important goals to achieve by its member states is a better cost effective international cargo transportation system. For this purpose the project of developing a commercial waterway linking the east region of Uruguay with the south of Brazil has been under study for a number of years now. Because of the high costs involved on the development of such waterway, the project has been indefinitely delayed. It is our intention to show an alternative way to reduce the present obstacles by using a budget oriented approach in order to determine the vessel best suited to use on the proposed waterway. So far, every study related to the project has been focused on the amount of work needed to modify the environment in order to accommodate the hardware already available in the region. The conclusions show that the cost of opening and maintaining the required navigation channel is high enough to discourage investment; the added responsibility to take care of any environmental damage incurred during the building and/or operation of the waterway makes searching for a less costly and hazardous option an interesting challenge. The proposed terminal on the Cebollat? River would be located at the heart of the Uruguayan rice growing region. Uruguay exports 90% of its rice production, being Brazil its biggest buyer. Wood chips and clinker are the other types of cargo considered to use the proposed waterway in route to either Brazil or to overseas destinations through the deep water port of Rio Grande. Through the analysis of local data by a Geographical Information System, international regulations regarding inland waterways and shallow draught vessel characteristics, we seek to propose a cost efficient alternative to apply on this particular scenario.

• 한국도서관정보학회지
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• 제50권3호
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• pp.293-315
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• 2019

본 연구는 공공도서관 메이커스페이스 공간조성의 방향을 위하여 도서관 메이커스페이스에 관한 문헌연구 및 국내 25개 공공도서관과 미국 18개 공공도서관에 설치된 메이커스페이스 운영사례를 조사하였으며, 용산도서관과 마포평생학습관에 설치된 창의학습공간(L-Commons)의 이용현황, 공간과 자원 인식, 메이커스페이스 적용 및 발전방향에 대한 사서 심층인터뷰와 이용자 설문조사를 실시하여 제시하였다. 본 연구를 통하여 제시된 공공도서관 메이커스페이스 공간은 첫째, 지역사회 구성원 누구나 쉽게 진입할 수 있고 지역 내 모든 계층 간의 장벽을 허물고 원활한 소통을 이끌어낼 수 있는 개방공간이어야 하며 둘째, 지역주민들이 어울려 새로운 아이디어로 창작활동을 하고 프로젝트를 진행할 수 있는 자원공유와 협력이 가능한 학습 협력 창의공간이어야 하고 셋째, 공통의 관심을 가진 지역주민들이 사교적 또는 협동적으로 만나 공공장소에서 아이디어 공유와 브레인스토밍을 하고, 다른 곳에서는 실행할 수 없는 아이디어를 물리적인 것으로 전환하거나 흥미로운 것에 대한 작업을 가능하게 하는 창작작업공간이 되어야 한다.

• 사상체질의학회지
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• 제22권3호
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• pp.29-42
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• 2010

1. Objective: Gastric Stuffiness (心下痞證) in the Soeumin Taeeum symptomatology (少陰人 太陰病) in Sasang Constitutional Medicine shows an interesting evolutionary process. Originally found in the texts of Sanghanlun (傷寒論), the perspectives regarding the symptoms of Gastric Stuffiness were expanded by many medical scholars and Lee Jema. To comprehend the Jema's concept of Taeeum symptomatology and utilize his prescription clinically, it deserves to study on the Gastric Stuffiness in Donguisuseowon (東醫壽世保元). 2. Methods: Many texts including Sanghanlun (傷寒論) and Dongeuibogam (東醫寶鑑) were reviewed in order to track the evolutionary process concerning the symptoms of Gastric Stuffiness. Also, Lee Jema's works including the different versions of Donguisuseowon (東醫壽世保元) were reviewed to examine the development of Lee's concepts regarding the Gastric Stuffiness in the Soeumin Taeeum symptomatology. 3. Results and Conclusions: 1) Most of the previous concepts on Gastric Stuffiness were generally similar to those found in Sanghanlun, especially in that they addressed Yang deficiency of the middle triple energizeer as the central pathogenic process. 2) Lee Jema's views on the epigastric discomfort in the Soeumin Taeeum symptomatology evoloved over time and culminated in the finalized pathology and therapeutics appearing in his last work, the Shinchuk version of Donguisuseowon (東醫壽世保元). 3) 4 kinds of prescription which invented by Lee Jema to treat the Gastric Stuffiness in the Soeumin Taeeum symptomatology can be matched to the prescription of Sanghanlun respectively. However through evolutionary process of Jema's prescriptions, the indication of them expanded: not only to treat Gastric Stuffiness but to diverse symptoms of Soeumin.

• 한국콘텐츠학회논문지
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• 제12권12호
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• pp.597-604
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• 2012

완전한 3차원 입체상을 실현하기 위해 시청 위치의 제약이 없고 자연스런 화상표현이 가능한 홀로그램이 주목받고 있다. 홀로그램 기술은 안경 없이 입체 영상을 구현해 낼 수 있는 최고의 기술로 평가받고 있지만, 여러 가지 기술적 문제 때문에 현재 상용화되지는 못하고 있다. 현재 공연이나 전시에 사용되고 있는 홀로그램 기술은 고해상도 프로젝터로 영상을 쏘아 2차원의 투명 스크린에 투사하는 방식으로 진정한 의미에서의 홀로그램이 아닌 유사 홀로그램 기술이다. 본 연구에서는 홀로그래픽 프로젝션을 위한 3D 콘텐츠를 제작하고, 제작한 콘텐츠와 관객이 상호작용하는 아트를 제시한다. 전시 결과, 관객들은 스크린 주변을 돌아다니며 양면으로 감상할 수 있는 관람 형태에 만족을 나타냈고 자신의 움직임에 따라 재생되는 영상과의 상호작용에 적극성을 보여주었다. 따라서 흥미로운 공간 연출과 함께 시공간적 예술작품뿐 아니라 감각적인 예술작품을 구현할 수 있었으며 대중에게 친근하고 상호 소통이 가능한 공간을 표현할 수 있었다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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• pp.425.1-425.1
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• 2014

Thermal transport in nanomaterials is not only scientifically interesting but also technological important for various future electronic, bio, and energy device applications. Among the various computation approaches to investigate lattice thermal transport phenomena in nanoscale, the atomistic nonequilibrium Green's function approach based on first-principles density functional theory calculations appeared as a promising method given the continued miniaturization of devices and the difficulty of developing classical force constants for novel nanoscale interfaces. Among the nanometerials, carbon atomic chains, namely the cumulene (all-doulble bonds, ${\cdots}C=C=C=C{\cdots}$) and polyyne (alternation of single and triple bonds, ${\cdots}C{\equiv}C-C{\equiv}C{\cdots}$) can be considered as the extream cases of interconnction materials for nanodevices. After the discovery and realization of carbon atomic chains, their electronic transport properties have been widely studied. For the thermal transport properties, however, there have been few literatures for this simple linear chain system. In this work, we first report on the development of a non-equilibrium Green's function theory-based computational tool for atomistic thermal transport calculations of nanojunctions. Using the developed tool, we investigated phonon dispersion and transmission properties of polyethylene (${\cdots}CH2-CH2-CH2-CH2{\cdots}$) and polyene (${\cdots}CH-CH-CH-CH{\cdots}$) structures as well as the cumulene and polyyne. The resulting phonon dispersion from polyethylene and polyene showed agreement with previous results. Compared to the cumulene, the gap was found near the ${\Gamma}$ point of the phonon dispersion of polyyne as the prediction of Peierls distortion, and this feature was reflected in the phonon transmission of polyyne. We also investigated the range of interatomic force interactions with increase in the size of the simulation system to check the convergence criteria. Compared to polyethylene and polyene, polyyne and cumulene showed spatially long-ranged force interactions. This is reflected on the differences in phonon transport caused by the delicate differences in electronic structure.

• 방사성폐기물학회지
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• 제12권1호
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• pp.45-57
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• 2014

이온성 액체 기술에서의 학문적 연구들은 원자력 산업으로 확대되어 왔으며 많은 연구자들에 의해 방사성 물질의 처리에 이온성 액체의 활용이 연구되어 왔다. 다수의 연구들에 의해 사용 후 핵연료에 포함되어 있는 금속 원소들의 분광학적, 전기화학적 거동에 대한 흥미로운 결과들이 보고되었다. TBP(tri-butyl phosphate)를 용해시킨 이온성 액체에서 측정되고 관찰된 금속 이온들의 물성들은 전통적인 수용성 공정에 대한 대안 기술 개발을 유발시켰다. 한편, 수용성 및 비수용성 공정에서의 활용을 위해 이온성 액체에서 금속 이온의 전기화학적 전착이 연구되었다. 본 연구에서는 이온성 액체 연구에서 주목할 만한 내용들을 분류하고 정리하여 핵연료주기에서 이온성 액체의 활용에 대해 고찰하였다.

• 한국지역사회생활과학회지
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• 제26권2호
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• pp.387-403
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• 2015

This study examines the relationships between grandparenting roles, elderly generativity, and depressive symptoms. Data were collected from 129 grandmothers who helped raise grandchildren attending daycare centers. Grandparenting roles were assessed as generational transferers, caretakers, emotional supporters, and educators. Elderly generativity and depressive symptoms were evaluated based on the Loyola Generativity Scale and CES-D (Center for Epidemiological Studies on Depression Scale), respectively. Data were analyzed using t-test, ANOVA, and regression analysis methods. According to the results, grandmothers were most likely to play a role as caretakers, and there were differences across factors correlated with grandparenting roles. More specifically, daily hours spent on grandparenting and years of grandparenting were related to the caretaker role, and a high level of education was related to the educator role. Poor health was correlated with the generational initiator role. According to correlation and regression analyses, grandmothers who had access to more economic resources and who served as educators, emotional supporters, or generation initiators were more likely to show generativity. In addition, the higher the generativity, the less likely the depressive symptom was. These results have important implications for developing programs that can help grandparents raise preschool-aged grandchildren and suggest some interesting avenues for future research.

• 한국IT서비스학회지
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• 제14권4호
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• pp.171-184
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• 2015

Nowadays, mobile commerce is having an increasingly profound impact on our daily lives, and offer interesting and advantageous new services. Mobile payment is an emerging and important application of mobile commerce in smart work, enabling users to use their mobile devices (especially mobile phones) for paying goods and services wherever they go. The appearance of m-payment is expected to provide us a convenient and bright future to enjoy. That is the common trend on over the world, but in Vietnam, although the number of smart phone users has been increasing rapidly, the adoption of m-payment system still didn't succeed completely. The research reviewed literature regarding mobile payment services, analyzed the impact of customer characteristics and system characteristics on m-payment adoption in Vietnam. To analyze the adoption behaviors of m-payment users, m-payment research model which consists of three customer-characteristics (m-payment trust, personal innovativeness, m-payment knowledge) and four m-payment system characteristics (mobility, reachability, convenience, compatibility) were studied. The results indicate that perceived usefulness, trust, and compatibility are the important predictors to the intention to use m-payment. This study will assist m-payment services suppliers in implementing appropriate business models and service strategies to successfully attract customer to use m-payment in Vietnam, allowing managers to exert appropriate investment, time, and effort for m-payment system development in designing smart working.