• Journal of Korean Society of Rural Planning
• /
• v.8 no.1 s.15
• /
• pp.94-104
• /
• 2002

In spite of the importance of the farm area in Seoul, in providing fresh vegetables, a pleasant environment and a good quality of life for residents, rapid urbanization and industrialization have greatly reduced the farm area. The purpose of this study is to examine farmers' intentions and attitudes to provide supporting data for planning the strategy of urban agricultural development. All the collected data was analyzed using the contingency tables and the Chi-square test using the SAS computer statistical package. Based on analysis of the survey data, the leaseholders were found to be more satisfied with their job than the landowning farmers. Also, the small-scale farmers with green houses showed greater job satisfaction than the ordinary large-scale farmers. Farmers' views on the farming in Seoul were different depending on their status. Therefore, agricultural strategies in there should be considered their different attitudes.

• Proceeding of EDISON Challenge
• /
• 2017.03a
• /
• pp.376-382
• /
• 2017

Graphene nanoribbons with zigzag-shaped edge (zGNRs) are predicted to be magnetic insulator at the ground state, attracting significant interest in view of spintronic applications [1]. On the other hand, although they are energetically and thermodynamically more favored than zGNRs [2], graphene nanoribbons with armchair-shaped edge (aGNRs) have been less spotlighted than zGNRs due to the absence of magnetism. Herein, based on the combined density functional theory (DFT) and matrix Green's function (MGF) approach, we consider aGNRs functionalized with various molecular groups, and show that the spin polarizations develop for some of the considered aGNR edge functionalization cases. The origin of the induced magnetism will be discussed within the Lieb's theorem [3]. This work will provide a novel guidance for the development of graphene-based spintronic devices.

• Proceedings of the KSR Conference
• /
• 2008.06a
• /
• pp.2195-2199
• /
• 2008

The concern on sustainable development is increased to solve the global warming which is environmental issue over nations. Sustainable development is the concept of minimizing the consumption of resource and environment burden. In transportation, there are some trials of shifting to green transportation mode through low energy consumption and high efficiency. Korea Tilting Train eXpress (TTX) can run higher speed than existing train and save energy through light weight. In this study, Tilting bogie, the core equipment of tilting train, was compared with that of existing train.

• 한국유가공학회:학술대회논문집
• /
• 2004.06a
• /
• pp.1-7
• /
• 2004

Dairy development in India has emerged as one of the modern India's most successful development programmes. India's White Revolution, which has quietly swept the country during the past few decades, deserves attention equal to that given to the better known Green Revolution. India has become the largest milk producer in the world. From being a major importer of dairy products in the 1950s, India has now become an exporter. The strength of lndian dairy sector lies in the fact that despite of limited investment, it has shown consistent and sustainable growth. Presently India ranks first in the World milk production with 88.02 million tones (2002 03) with an annual growth rate of 4.2 per cent. Planning Commission estimates that by the end of Xth Plan, milk production may touch 100 million tones.

• Journal of the Korean housing association
• /
• v.9 no.2
• /
• pp.13-20
• /
• 1998

After Industrial Revolution, the rapid economic development and changes in industrial structures caused the urban centralization phenomenon of population, and the consequential and swift urban development forced to require somewhat more of necessary residential lands. With deferring the ecological principles, due to the developed urban area, 'green land' within a city started to diminish; and due to serious pollution, the environemental quality declined, and the living environment became sagged down even more seriously. it was analyzed to be a considerable point as a type of model for newly developing cities that are being undergone by the developmental and expansive plan by the City of Chun-chon.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2007.08a
• /
• pp.431-434
• /
• 2007

Rapid progress has been made in the development of commercially viable Light Emitting Polymer (LEP) materials for display and lighting applications. This presentation will focus on: ${\bullet}$ Degradation studies that have led to the design of new and improved materials ${\bullet}$ Recent lifetime and efficiency results for red, green, blue, and white polymers ${\bullet}$ Challenges of formulating inks that can be used in a production environment

• International Journal of High-Rise Buildings
• /
• v.1 no.4
• /
• pp.255-269
• /
• 2012

Tall buildings' implementation has often lacked urban design and architectural guidance. There are many examples of tall buildings that have been inappropriately located, designed, and built, and consequently dissatisfaction with high-rise development is wide-spread. This paper attempts to provide extensive urban and architectural guidelines in order to manage cityscape and to ensure safe and healthy living. Through recommendations on design and layout of tall buildings and open spaces the guidelines seek enhancing the visual experience, improving the microclimate conditions, and fostering active social life. These guidelines help in providing enjoyable urban experiences through the examination of spatial relationships, human scale, genius loci, perceptual characteristics, local identity, built heritage, economic activities, and social life.

• Journal of Environmental Science International
• /
• v.24 no.8
• /
• pp.1065-1073
• /
• 2015

Urbanization can be significantly affected the hydrologic cycle by increasing flood discharge and heat flux. In order to mitigate these modifications in urban areas, Low Impact Development (LID) technique has been designed and applied in Korea. In order to estimate runoff reduction rate using SWMM LID model, the characteristics of five LID techniques was firstly analyzed for water balance. Vegetated swale and green roof were not reduce flood discharge nor infiltration amount. On the other hand, porous pavement and infiltration trench were captured by infiltration function. The flood reduction rate with LID is substantially affected by their structures and properties, e.g., the percentage of the area installed with LID components and the percentage of the drainage area of the LID components.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.61 no.8
• /
• pp.1204-1209
• /
• 2012

To diagnose dental pulp vitality, electric pulp tester has been widely used, which is a method to test condition of nerve. However, especially in the case of patients with trauma, nerve desensitization could temporarily occur even though nerve might be recovered by blood flow within the pulp later, which implies that blood flow in dental pulp is also an important factor for diagnosing vitality. This paper described the development of a probe that relatively measured blood flow in dental pulp using photoplethysmography (PPG). The probe emits four different wavelength light sources including three visible and an infrared light. We tested which light source detect sensitively the blood flow in dental pulp. As a result, green light had the largest peak to peak voltage and the power spectrum among different wavelengths.

• Journal of Microbiology and Biotechnology
• /
• v.18 no.7
• /
• pp.1342-1351
• /
• 2008

The feasibility of the use of Flp-mediated cassette exchange in the development of a CHO cell line, which produces erythropoietin (EPO) stably and largely, was investigated. A stable, high enhanced green fluorescence protein (EGFP)-producing clone was screened by extensive flow cytometric analysis. An EPO expression unit was targeted into the premarked locus of the stable parental clone by Flp-mediated cassette exchange and a correctly targeted clone (FC28T7) was obtained. The EPO production of FC28T7 was proven to be stable in long-term culture. Furthermore, the Flp-mediated cassette exchange did not alter the stable parental clone's characteristics concerning transgene expression level and stability. Taken together, the data obtained here indicated that the establishment of CHO cell lines stably producing a desired protein is achievable using Flp-mediated cassette exchange.