• Journal of the Korea Society for Simulation
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• v.14 no.4
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• pp.55-68
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• 2005

The advancement in semiconductor technology is leading toward smaller critical dimension designs and larger wafer manufactures. Due to such phenomena, semiconductor industry is in need of an accurate control of the process. Photolithography is one of the key processes where the pattern of each layer is formed. In this process, precise superposition of the current layer to the previous layer is critical. Therefore overlay parameters of the semiconductor photolithography process is targeted for this research. The complex relationship among the input parameters and the output metrologies is difficult to understand and harder yet to model. Because of the superiority in modeling multi-nonlinear relationships, neural networks is used for the simulator modeling. For training the neural networks, conjugate gradient method is employed. An experiment is performed to evaluate the performance among the proposed neural network simulator, stepwise regression model, and the currently practiced prediction model from the test site.

• Hwankyungkyoyuk
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• v.14 no.1
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• pp.107-126
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• 2001

The interest in environmental issues and the awareness of the importance of environmental education have been increasing. This research was carried out in part to respond to such a change, and it aims to search for and suggest ways to strengthen subject-based environmental education in Korea, the most significant part of the formal environmental education. One of the most important of this research was understanding the present status of environmental education of elementary, middle, and high schools in Korea, which was conducted by the questionnaire survey targeted to teachers on the subject-based environmental education. The survey was carried out comprehensively to include respondents from technical and home economics course as well as from vocational high schools. Through this survey, we gained information on the awareness of teachers and students on the objective, learning-teaching strategies and evaluation of environmental education as well as an understanding of the present status of environmental education in schools of Korea.

• Current Optics and Photonics
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• v.1 no.3
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• pp.233-238
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• 2017

In this paper we propose a freeform secondary lens for an LED fishing/working lamp (LFWL). This innovative LED lamp is used to replace the traditional HID fishing lamp, to satisfy the lighting demands of fishing and the on-board activities on fishing boats. To realize the freeform lens's geometry, Gaussian decomposition is involved in our optics-design process for approaching the targeted light intensity distribution curve (LIDC) of the LFWL lens. The simulated results show that the illumination on the deck, on the sea's surface, and underwater shows only small differences between LED fishing/working lamps and HID fishing lamps. Meanwhile, a lighting efficiency of 91% with just one third of the power consumption can be achieved, when the proposed LED fishing/working lamps are used instead of HID fishing lamps.

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.06a
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• pp.27-27
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• 2017

The rapid growth of world population, reduction of cultivated areas for crop production, and detrimental effects of pests, diseases, and climate changes have required to breed new rice cultivars with high yield, accepted quality, but strong resistance to abiotic and biotic stresses. However, traditional breeding needs much time to breed a new cultivar, whereas the successful use of molecular breeding is still questionable. We have developed a novel mutation which allow to cross many rice cultivars together with low segregation, that allow to breed a new cultivar in only several cropping. The mechanism has been unknown, but we suggest that gene linkage may play a crucial role, of which the semi dwarf gene might be the center gene for gene linkage occurrence. The phenomenon of this possible gene linkage is contrary to Mendel rules, but it is promising to breed new rice cultivars, of which, the most elite genes in rice might be able to gather in a targeted rice variety.

• Journal of Korea Society of Digital Industry and Information Management
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• v.11 no.1
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• pp.145-155
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• 2015

The game industry has changed along with the advancement of device technology. The wearable, a recently appeared device will create new demand in this saturated age of the smart devices. The game industry's content targeted towards the wearable devices will play an important role as main driving source. For this reason, this research studies the development aspect and the current technical capabilities of games' platforms and contents by analyzing the contrast between the results of features and current situations of the wearable market. Consequently, we define the prospects of game content for wearable device. We also expect that the new style of the game content, combined with cloud game, augmented reality game and virtual reality game will appear in the next generation platforms gearing towards the wearable devices.

• Science of Emotion and Sensibility
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• v.16 no.4
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• pp.567-578
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• 2013

The research is a correlational study to look for causes and factors relating to the design of written documents (professional reading materials) and identify those relationships that are useful for communication designers. The research specifically targeted the relationships between perception and reader's past experiences and appearance of the written documents. A preliminary survey, such as interviews, discussions, questionnaires and brainstorming sessions are conducted to establish the observable attributes related to perception which are reader's interests, importance of information and written documents complexity. Finally, the research used Structural Equation Model (SEM) to identify significant differences and analyze strong and weak correlations between these attributes. In general, the results of the study shows that the attribute appearances of a written documents with excellent visualizations for information display shows a strong correlation with interests while the attributes importance is weakly correlated with the complexity of the documents.

• 한국신재생에너지학회:학술대회논문집
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• 2007.11a
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• pp.525-528
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• 2007

Geothermal Energy is related part of important the technology, and getting Patent statistics and analysis are targeted to Koran, Japan and America. Accoding to patent statistics, checking the analysis, developing speed of technology in korean and technology level and compared with America between Japan of technology. In this paper, Give help to national level can be achieved by reinforcing companies R&D, putting more concern and effort on getting straegical patents, activation of jog invention, expanding the quality Intellectual property(IP) & licensing Personnel, building a system responsive to international patent dispute. and national level can be archived by encouraging &supporting R&D of core technology, overseas applications of IP rights

• Proceedings of the Korean Society of Toxicology Conference
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• 2002.05a
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• pp.84-84
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• 2002

Abstract To study the status of oxidative DNA damage in Helicobacter pylori infection in more details, gene-specific oxidative DNA damage was investigated by examining oxidative DNA damage to individual genes. This was done by determining the loss of PCR product of a targeted gene before and after gastric mucosal DNA was treated with 8-hydroxyguanine glycosylase, which cleaves DNA at the 8-hydroxyguanine residues.(omitted)

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.11a
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• pp.179-179
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• 2005

• Journal of Food Hygiene and Safety
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• v.11 no.4
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• pp.307-314
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• 1996

The European Economic Community four plate test(EEC 4-plate test, FPT, EU) has been used for monitoring antimicrobial drug residues in meat by Local Veterinary Service Center in Korea. This study was performed to evaluate sensitivity and group specificity of some antimicrobial drugs in FPT and to compare FPT with Charm II test. The minimal detectable levels of targeted antimicrobial drugs tested with standard solutions were 0.025∼1.0 ppm for 7 beta-lactams, 0.5∼1.0 ppm for 4 aminoglycosides, 0.05∼0.5 ppm for 5 macrolides, 0.05∼0.25 ppm for 3 tetracyclines and 0.25&1.0 ppm for 6 sulfonamides. In comparison of FPT and Charm II test, the results of FPT were not accord with those of Charm II test having the group specificity of seven families of antimicrobial drugs in meat samples except some families like tetracyclines.