• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.5
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• pp.2133-2141
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• 2011

The environment of the health food in the world has been changed very rapidly. The world market volume of functional drinks in 2012 will be estimated at $ 26.9 billion, and Asia-Pacific market is expected to be $ 13.6 billion. The domestic market volume of bottled water in 2008 was 440 billion won, and "Jeju Samdasu" sales was 89.1 billion won. But the brand of "Jeju Samdasu" has the limits. As a solution, the comprehensive advertising of the excellence quality of Jeju water is required. To increase the likelihood of success in development of functional and mixed drinks by the water is necessary to develop a global integrated brand. In developing the functional and mixed drinks by the water, we apply the functionality of the Jeju agricultural products actively, and connect Jeju Water industry with Jeju agricultural industry, which promote the overproduction control and the high value- added agricultural products.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.1
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• pp.1-8
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• 2011

Efficient power management plays a crucial role to strengthen competitiveness in the market of portable mobile commodities. This paper presents a proactive power management technique, called by Energy-Aware Scheduling policY (EASY), to exploit the sleep time information of running applications. Different from previous power management approaches focusing on power conservation in standby mode, the proposed scheme characterizes each application program's operational characteristic in active mode by observing how long the task stays in sleep state of CPU scheduler. Based on the measured sleep time, the proposed EASY speculates an adequate CPU clock frequency according to the current CPU workload and scales the frequency directly to the predicted one. Experimental results show that the proposed scheme reduces the power consumption by 10-30% on average compared to traditional DPM approach, with a minimal impact on the performance overhead.

• The Transactions of the Korean Institute of Power Electronics
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• v.13 no.6
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• pp.439-446
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• 2008

The medium power system for the recent electronic products that can perform the multi-function requires various multi-output, high-efficiency and low cost characteristics. To cope with these critical issues, a new high-efficiency and cost-effective multi-output LLC resonant converter is proposed in this paper. The proposed converter requires only 1 power switch instead of the bulky and expensive non-isolated DC/DC converter. Therefore, it features a simple structure, lower cost and high-efficiency. Especially, since the proposed converter can ensure the ZVS or ZCS of all power switches, it has very desirable advantages such as more improved EMI characteristics and reduced switching losses. Finally, to confirm the operation, validity, and features of the proposed circuit, experimental results from a SMPS prototype for 42" FHD PDP TV are presented.

• Journal of Intelligence and Information Systems
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• v.15 no.2
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• pp.75-95
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• 2009

The aim of this research is to design and analyze a social network service model using mobile RFID based business card. This paper suggests how the behavior of exchanging business cards will be changed in ubiquitous environment and designs a social networking service model using a ubiquitous business card, which embeds a RFID tag. We describe the scenarios and analyze a role, value and potential benefits of participants of the u-SNS service model. For the proof of the superiority and the feasibility of our model, we compare it with its related researches and products based on the calculation of the benefits and costs of the alternatives.

• The Transactions of the Korean Institute of Power Electronics
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• v.14 no.1
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• pp.23-30
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• 2009

A new high performance and low cost unified power system is proposed through investigating conventional Power-Integrated Drive(PID) system and Power-Separated Drive(PSD) system applied to LCD TV. Since the proposed system consists of two stage, namely power and inverter stage it features high efficiency and cost effectiveness. To satisfy the safety standard of the High voltage transformer, 1:1 transformer is employed between inverter and high voltage transformer. Moreover, to ensure the Zero Voltage Switching(ZVS) of all power switches and the Pulse Count Modulation(PCM) method is employed, which controls the number of pulse at the fixed frequency and fixed duty cycle. Therefore, it features high efficiency, improved heat generation, cost effectiveness and good EMI performance including no additional current balancing coil. To confirm the validity of proposed system, comparison of conventional system, verification of experimental results are presented.

• Land and Housing Review
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• v.3 no.2
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• pp.187-193
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• 2012

A technology that newly attract attention in the area of energy-related study is the energy harvesting(or scavenging) technology. In this paper, the performance of power generation for the energy harvesting block with a combination of piezoelectric technology and electromagnetic technology among various energy harvesting technologies was investigated. The goal of this study is to evaluate on the applicability of our developed energy harvesting block into the field of urban & housing. First, we evaluated the performance of power generation for the multi-layer energy harvester at laboratory scale. Second, we described the features of our developed prototype module that includes amplification technologies to improve power density per module and evaluated the performance of power generation for the energy harvesting block in a variety of ways. From the test results, the developed product increased the performance of power generation up to 255% or 505% compared to the existing product and its superiority were shown. Finally, we suggested the direction for the improvement of the energy harvesting block module.

• The Korean Journal of Food And Nutrition
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• v.17 no.4
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• pp.382-387
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• 2004

This study was performed to evaluate the quality characteristics of the drink with chlorella and Prunus mume. The chlorella drinks were prepared in four different ratios such as chlorella extract 5%, 10% and Prunus mume extract 0.2%, 0.4% added in chlorella extract 5%. In the color of the chlorella drinks, chlorella extract 10% had lower Hunter's color values(L, a, b) than chlorella extract 5%. The hunter's L(lightness) and a(redness) values were lower for Prunus mume extract 0.4% compared to Prunus mume extract 0.2%, however, there was no difference in the b(yellowness) values. A safety test showed that the drinks are clear from heavy metals and total bacteria and colifom bacteria. In the sensory test of the drinks, the sensory scores(color, taste, flavor, overall acceptability) show the best result on chlorella extract 5%(with Prunus mume extract 0.4% added), followed by chlorella 5%(with Prunus mume extract 0.2% added). The score for chlorella extract 10% was the lowest.

• The KIPS Transactions:PartA
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• v.12A no.3 s.93
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• pp.205-214
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• 2005

Flash memory is at high speed used as storage of personal information utilities, ubiquitous computing environments, mobile phones, electronic goods, etc. This is because flash memory has the characteristics of low electronic power, non-volatile storage, high performance, physical stability, portability, and so on. However, differently from hard disks, it has a weak point that overwrites on already written block of flash memory is impossible to be done. In order to make an overwrite possible, an erase operation on the written block should be performed before the overwrite, which lowers the performance of flash memory highly. In order to solve this problem the flash memory controller maintains a system software module called the flash translation layer(FTL). Of many proposed FTL schemes, the log block buffer scheme is best known so far. This scheme uses a small number of log blocks of flash memory as a write buffer, which reduces the number of erase operations by overwrites, leading to good performance. However, this scheme shows a weakness of low page usability of log blocks. In this paper, we propose an enhanced log block buffer scheme, FAST(Full Associative Sector Translation), which improves the page usability of each log block by fully associating sectors to be written by overwrites to the entire log blocks. We also show that our FAST scheme outperforms the log block buffer scheme.

• Journal of Convergence for Information Technology
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• v.8 no.1
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• pp.27-36
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• 2018

This study aims to investigate the status of using medicinal herb cosmetics targeting women who had experiences of using medicinal herb cosmetics and present basic data for future development of medicinal herb cosmetics that can satisfy the needs of future customers and convergence marketing strategies. For the purposes, this study conducted a frequency test and a chi-square test (${\chi}^2$) on the 351 copies of responses obtained from a survey targeting adult women to identify the use status according to perceptions on medicinal herb cosmetics. As a result, the followings were presented: As the subjects were older, they preferred medicinal herb cosmetics and intended to keep purchasing it. Customers had more confidence in the medicinal herb cosmetics when the cosmetics were good-quality. In respect to efficacy difference according to prices, the subjects who believed that there was difference in efficacy according to prices were more satisfied with the medicinal herb cosmetics and purchased products of higher price. Such results indicate it is suggested that medicinal herb cosmetics would develop further when cosmetic products that can satisfy their need are developed.

• Culinary science and hospitality research
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• v.22 no.7
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• pp.58-71
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• 2016

This study aimed to gauge the public awareness of the cultural value and superiority of Korean traditional sweets. Furthermore, it evaluated the obstacles that the Korean traditional sweet industry faces in the modern society, and a method to popularize it. It also analyzed the awareness of Korean traditional sweets. Both male and female study subjects showed the highest awareness of yakgwa and the lowest of chasugwa. Female respondents showed significantly (p<0.05~p<0.001) higher awareness of Osaekdasik, Hukimjadasik, Bellflower-junggwa, and Genseng-junggwa than male respondents. Maejakgwa, Osaekdasik, Rice-dasik, and Hukimjada- sik showed significant difference in awareness by the area survey respondents originated. Contrarily, Walnut-gangjung had significantly (p<0.001) higher awareness in rural areas than in more urban areas (e.g., large cities and small and medium-sized cities). Both male and female respondents answered (OR indicated) that the obstacles facing the Korean traditional sweet industry are uncommon products and expensive price. Both male and female respondents said that they had Korean traditional sweets less because it was harder to purchase than western sweets (due to limited access to these sweets), less delicious, and too expensive. Both male and female respondenst suggested that the urgent tasks to popularize the Korean traditional sweets were diversification in shape and ingredient, developing various new flavors, and cheaper products. Both male and female respondents responded that product diversification and strengthened marketing were urgent tasks to industrialize Korean traditional sweets. Therefore, it was believed that failure in generalization was the urgent problem of the Korean traditional sweet industry, and that Korean traditional sweets were harder to purchase because of lower accessibility than western sweets. To popularize Korean traditional sweets, it may be necessary to develop sweets in various shapes and ingredients, flavors suiTable to modern people, become cheaper in price, and have fancier (OR better) packaging.