• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.10
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• pp.2990-2996
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• 2009

S. mutans, one of a major causal agents of dental caries, is component of the dental plaque and produces various organic acids such as lactic acid as the end-product of glycolysis. In this study, we are interested in comparing the gene expression of acid-shocked and control cells of S. mutans isolated from Korean with caries. Expression levels of gtfB, gtfC, gtfD and ftf were analyzed by Real-time PCR, when the cells were grown under 20 mM lactic acid stress in the exponential phase. The data showed reduced expression of these genes. S. mutans is known to have developed a variety of mechanisms to tolerate acid sterss. A more detailed analysis of the functions and interactions of acid stress proteins connecting the growth, stress tolerance, biofilm formation is under way.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.9
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• pp.5452-5459
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• 2014

A resonance linear electric generator in a vehicle suspension is a system that performs self-electric generation by collecting the vibration energy when a vehicle runs on a road, and takes the resonance phenomenon to derive large electric generation from slight road surface vibrations. In this paper, the motions of an armature in three different electric generator structures were simulated and the actual generation quantity was calculated and compared with these results. Furthermore, when the vehicle runs on the road, the design improvement for a multi-degree of freedom electric generator was conducted to make the resonance respond to various excitation frequencies, and the change in the resonance points and generation quantity were identified.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.12
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• pp.6998-7004
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• 2014

This study examined how the facility satisfaction, anxiety, self-esteem, stress, and depression of the elderly in care facilities affect their life satisfaction. The objects of the study were 271 elderly in 8 care facilities located in Seoul and associated areas. The results of a questionnaire, which was carried out from the 10th March to 25th August 2013, were analyzed. For data analysis, a t-test, one-way variance analysis, correlation analysis, and proof analysis on the SPSSWIN 18.0 program was conducted at the significance level of 5%. The analysis revealed the following. First, there were differences in the life satisfaction depending on age, sex, education level, and marital status. Second, life satisfaction was related to service satisfaction, medical service satisfaction, facility environment satisfaction, and self-esteem. Third, life satisfaction was higher if self-esteem, service satisfaction and facility environment satisfaction were higher, and if the family relationship stress was lower. Overall, self-esteem, service satisfaction, and facility environment satisfaction of the admitted elderly were positive influential factors of life satisfaction.

• Cartoon and Animation Studies
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• s.34
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• pp.367-386
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• 2014

The development of science was crucial to recent advancements in design such as digital contents, UI, GUI, UX design. Not until the DOS evolved into Windows OS were many kinds of digital media design created, namely due to the invention of the computer mouse. A necessary element of mobile phones and Window OS is icons, since icons act as visual symbols, touch buttons and gateways into software content. Icons have undergone many stages of development simultaneously with developments in digital science. We can observe changes in mobile icon design from Skeuomorphism Design to Minimalism to Flat Design. These changes were caused by macro-level trends in design across all other industries. Apple iPhone's Skeuomorphism Design of 2013 evolved into IOS7's Minimalism and Flat Design of 2014. In the mobile world, flat design will again create big changes in design. This research aims to contribute to basic research data of GUI design that are used by creators of mobile apps to understand and anticipate future trends.

• Journal of the Korean Society for information Management
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• v.21 no.4 s.54
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• pp.5-26
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• 2004

A literature analysis for the planning and realization of the multimedia meta database and digital library's integrated information system was carried out to establish the various oceanographic resources in the Oceanographic Information Center, the first in Korea. The study targeted from printed matter, network resources, full-text and to VOD. The focus of the analysis lies in the providing practical integrated information retrieval service for oceanographic resources based on the framework of effective MODS metadata with network resources description. The analyses included oceanographic resources, multimedia information processing, MODS metadata descriptive elements, metadata classification, system organization, and retrieval for planning and implementation of the multimedia meta database system.

• Journal of the Korean Society for information Management
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• v.34 no.4
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• pp.127-152
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• 2017

RFID technology that is one of the ways to enhance productivity and competitiveness across diverse sectors of IT, is being hailed as a technology that replaces the bar code system and brings more convenience to the system. RFID system have been already applied to libraries, and archive, and is expected to bring advancements in the development of more effective records management systems. However, the system is still in the initial stage of the introduction, and it has been difficult to introduction because of trivial problems and unsafe elements, and studies have not been conducted to identify the detailed problems of the system. So, In this study, conducted interviews and surveys of executives of archive who operate the RFID based records management system. Based on this, we found the operational status of the RFID based records management system operating in the current archive, and the problems in the RFID based records management system. In conclusion, we suggest improvements in efficient operation methods.

• The Journal of the Korea Contents Association
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• v.17 no.12
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• pp.505-515
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• 2017

As animation industry continues to evolve in China, the demand for excellent manpower is on the increase. However, there is a difficulty in cultivating practical talents because many colleges and universities in China do not have the systematized animation education. This study compares the curriculum for animation major in Korea and China in order to find out the major problems and the improvement plans of animation education in China. It was shown that the curriculum in China mainly consisted of the subjects to learn technical skills and lacked the subjects to enhance students' creativity. Especially, universities in China did not offer the practice environment in which students apply and utilize what they learned. As a result, students had less opportunity to experience creative process of making animation. In order to solve these problems, it is necessary to make the balanced basic curriculum, link the practice courses with the creativity courses, develop the specialized learning methods and provide the training opportunities through industry-university cooperation. The results of this study suggest that good quality animation education is an important element for universities and animation industry to continue to prosper together.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.1
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• pp.19-24
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• 2009

Structural Dynamics Modification (SDM) is a very effective technique to improve structure's dynamic characteristics by adding or removing auxiliary structures, changing material properties and shape of structure. Among those of SDM technique, the method to change shape of structure has been mostly relied on engineer's experience and trial-and-error process which are very time consuming. In order to develop a systematic method to change structure shape, surface grooving technique is studied and successfully applied to HDD cover model. To verify Surface Grooving Technique, fully embossed HDD cover model was optimized. And comparing with previous optimization result, the effectiveness of this surface grooving technique was checked. The shape of groove and 1 st natural frequency were converged to the same result of previous optimization.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.12
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• pp.6047-6052
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• 2013

A cosmetic manufacturing process requires a mold that is inevitable for mass production. Cosmetic containers are one of major factors affecting the customer's purchase decision. In addition, the manufacturing cost in cosmetic container comprises a large portion of the entire product cost. Therefore, a mold satisfying the economical feasibility, aesthetics and functionality is necessary. Among the cosmetic containers, square shape containers have a tendency of having a short shot defect product. The square shaped cosmetic containers are mostly produced as a side gate shape on the two-plate molds. On the other hand, there are two disadvantages, such as gate trace and post processing requirement. The overlap-gateproposed in this study has the characteristics of intaglio gate cutting and no need for post processing. The delivery system of the overlap gate was simulated and compared with the side gate via Moldflow. The improvement in flow, frozen rate, density, and Air trap was confirmed. Based on the simulation results, the mold and performed injection molding was fabricated. In this study, the possibility of the mass production of high aesthetic and functionality cosmetic containers was verified.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.2
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• pp.207-211
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• 2007

It is a quite quality concerning to control the temperature of single crystalline growth as it does when we get most of heat treating products. It is also important factor to control the temperature when we make the $Al_2O_3$(single crystalline) used to artificial jewels, glass of watches, and heat resistant transparent glasses. Thus, it is a major interest to get the proper temperature in accordance with the time process while we are making mixture of oxygen and hydrogen to have the right temperature. In this paper, we will study of electrical valve positioning system with DC-Motor for the gas mixture to improve the quality of products.