• The Journal of the Korea Contents Association
• /
• v.7 no.4
• /
• pp.1-9
• /
• 2007

Cellular operators develop high speed mobile internet and multi-function cellular phones to activate new business model based on mobile internet services. Domestic cellular operators evolve their mobile networks from cdma2000-1x and EvDo to HSDPA to activate high speed mobile internet services. They also develop mobile internet platforms such as WIPI, BREW, and J2ME on multi-function cellular phones having multimedia solutions such as camera, MP3, MPEG, 3D game engine, DMB, PAN such as bluetooth, IrDA, W-LAN, and location information using GPS. But, content providers have problems of redevelopment of the same mobile internet application on different mobile internet platforms provided by cellular operators. In this paper, we develop conversion solutions for interoperability of mobile internet applications on WIPI and BREW using an one-pass compiler. We confirm the performance the proposed conversion solutions for the API conversion rate, the converted file size, and the full conversion time using the popular mobile games which are the killer applications on WiPI and BREW.

• Journal of Korea Technology Innovation Society
• /
• v.16 no.1
• /
• pp.252-278
• /
• 2013

Many countries implement an offset program as a method of the acquisition of modern military technology for enhancement of the domestic military strength. Offset agreements are made based on the value, not a monetary unit. The value should be above minimum threshold fixed by the related regulation. Hence, technology valuation model which is objective and reasonable is required vitally. At present, some defense related organizations such as DTaQ, ADD valuate the proposed technology by using their own method. However, due to the lack of differentiation of valuation analysis indicators for various technologies, existing offset valuation models are inadequate to consider whole characteristics of such technologies. In this paper, we developed four sets of offset valuation analysis indicators considering the characteristics of each technology, parts production, depot maintenance, military equipment performance upgrade, and R&D related technology, by using the Delphi method. Also, we structurized those indicators in each technology by using the factor analysis. Through applying developed indicators, it is expected that technology valuation in the offset program would be more credible and accurate. Ultimately, it gives greater bargaining power to negotiators in the procedure of the offset negotiation.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.1
• /
• pp.420-426
• /
• 2018

The purpose of this paper is to examine the business cycle in the Jeju region and what differences exist in relation to the nation as a whole, to calculate the relative importance between the random walk stochastic trend and cyclical factor, and to find out its causes and implications. Results of empirical analysis found that the characteristics of the business cycle in the Jeju region were as follows: First, the Jeju region, which is likely to have a growth component of the economy such as technological development and the accumulation of capital, was projected to have a possibility of high growth due to a greater proportion of the stochastic trend factor(46.8%) than the entire country(27.8%). Secondly, employment fluctuation in Jeju, which varies from 0.007 to 0.058 depending on the model, was lowest compared to the fluctuation of other indicators. The employment market in Jeju remained firm, showing that it is not smooth enough to create new jobs despite the production growth in industry. Third, the tourism industry was acting as a stabilizing factor, whereas the mining and manufacturing production was the opposite of tourism industry. This implies that the mining and manufacturing production was based on a weak foundation.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.1
• /
• pp.688-698
• /
• 2018

The government has recognized the importance of smart city indicators and prepared the legal grounds for the certification of smart cities in the recently revised "Act on Smart City Development and Industrial Promotion." This study derived smart city indicators adequate for the domestic conditions and compatible with the overseas trends by examining and complementing the indicators through an AHP analysis based on consultations and interviews (surveys) with experts and local government officials, who are actually carrying out related projects. In addition, the adequacy and reliability of the indicators were confirmed by verifying and certifying the Korean local governments' smart city plans through demand surveys on a trial basis. This study is meaningful in that it systematically studies the smart city indicators that have gained in importance and reviews their application. The findings of this study can be used as a basis for implementing a smart cities certification system in the future. Recently, the Special Committee on Smart Cities was established under the Committee for the Fourth Industrial Revolution. This committee is composed of civilian members and is working with the Ministry of Land, Infrastructure, and Transport, the Ministry of Science and ICT, etc., to promote the creation of smart cities. It is expected that smart city indicators that include the levels of both domestic and overseas smart cities will boost the active spread of such cities in Korea.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.7
• /
• pp.2937-2948
• /
• 2012

Record-keeping is one of the most fundamental practices in good farm management as it shows a systemic managerial and analytic data essential for a successful farm operation. Despite such obvious benefits in record-keeping, however, today`s farmers do not take advantage of this practice for various reasons. To make the matter worse, not much research has been done to resolve this incompatibility. Therefore, it is urgent for both the government and the farmers to come up with a better method or book of record-keeping that will show the farmers where their operation has been in the past, where it is now, and where it is heading in the future. This study will survey and analyze the current status of record-keeping practice among farmers using statistic models such as logit and ordered probit model. The results showed that the majority of the farmers lack knowledge about management record. Also, appropriate record-keeping books and related education were not available. Therefore, the government should develop and provide farmers with record-keeping books that are easy to use and at the same time giving proper education about agricultural management skills. Finally, this study suggests some improvement plans about agricultural record-keeping based on the results drawn.

• Journal of KIISE:Software and Applications
• /
• v.34 no.4
• /
• pp.328-341
• /
• 2007

When the decision to initiate a software product line has been taken, the first step is the domain analysis describing the variability in the requirements, the second important step is the definition of a domain architecture that captures the overall structure of a series of closely related products. A domain architecture can be a core asset in product line by describing the commonalities and variabilities of the products contained in the software product line. The variabilities, which are identified at each phase of the core assets development, are diverse in the level of abstraction. Therefore, it is important to clearly define, systematically identify, and explicitly represent variability at the architectural level. However, it is difficult to identify and represent the variability which should be considered at the architecture level, because these may be appeared in architecture elements and in architecture configuration. In this paper, we suggest a method of developing domain architecture as a core asset in product line where commonality and variability are explicitly considered. First of all, we will describe a domain architecture metamodel that can explicitly define commonality and variability concepts by extending the Object Management Group's ($OMG^{TM}$ Reusable Asset Specification eRAS) model. Using the domain architecture metamodel, architecture elements are defined and the variations that can be identified at the architecture level are classified into two types in according th abstract level. Additionally, we describe a domain architecture where commonality and variability are explicitly considered on basis of this metamodel.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.4
• /
• pp.1419-1429
• /
• 2010

Industry structure and environment of the domestic bank have been changed by an influx of large foreign-banks and advanced financial products when the currency crisis erupted in Korea. In a competitive environment, accurate forecasts of changes and tendencies are essential for the survival and development. Forecast of whether to approve loan applications for customer or not is an important matter because that is related to profit generation and risk management on the bank. Therefore, this paper proposes the method to improve forecast accuracy of loan underwriting. Processes in experiments are as follows. First, we select the predictor variables which affect significantly to the result of loan underwriting by correlation analysis and feature selection technique, and then cluster the customers by the 2-Step clustering technique based on selected variables. Second, we find the most accurate forecasting model for each clustering by applying LR, NN and SVM. Finally, we compare the forecasting accuracy of the proposed method with the forecasting accuracy of existing application way.

• Asian Pacific Journal of Cancer Prevention
• /
• v.15 no.12
• /
• pp.4977-4982
• /
• 2014

Background: Cytochrome P450 2E1 (CYP2E1) might be involved in the development of bladder cancer. However, previous studies of any association between CYP2E1 RsaI/PstI polymorphism and bladder cancer risk have yielded conflicting results. In this study, we performed a more precise estimation of the relationship by a meta-analysis based on the currently available evidence from the literature. Method: To assess the effect of CYP2E1 RsaI/PstI polymorphism on bladder cancer susceptibility, a meta-analysis of 6 available studies with 1,510 cases and 1,560 controls were performed through Feb 2014. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were used to estimate the strength of association for CYP2E1 RsaI/PstI polymorphism under different genetic models. Results: When available studies were pooled into the meta-analysis, we found that the C1C2 and C2C2 genotypes of CYP2E1 RsaI/PstI polymorphism significantly decreased bladder cancer risk under different genetic models (heterozygote: OR=0.766, 95%CI=0.613-0.957, $P_{OR}$=0.019; homozygote: OR=0.51, 95%CI=0.303-0.858, $P_{OR}$=0.011; dominant: OR=0.733, 95%CI=0.593-0.905, $P_{OR}$=0.004; recessive: OR=0.565, 95%CI=0.337-0.947, $P_{OR}$=0.030). Subgroup analysis indicated that C2C2 genotype was significantly associated with decreased bladder cancer risk under the homozygote genetic model in Caucasians. There was no evidence of heterogeneity or publication bias. Conclusions: The current meta-analysis suggested that the CYP2E1 RsaI/PstI polymorphism might be associated with bladder cancer susceptibility, especially in Caucasians. Further studies are needed to validate the above conclusion.

• Cartoon and Animation Studies
• /
• s.42
• /
• pp.105-123
• /
• 2016

The webtoon market has been consisently developing in the digital market. Under such circumstances, The Korea webtoon market is rapidly growing and leading of them. This is the time to prepare the base of a stable environment for the webtoon market which shows a swift rise. The Korean webtoon is surely aiming at the global market as well as the domestic one. As the Korean webtoon companies spread out to the world briskly, The leading publication cartoon market, Japan tries to break into the Korean digital market. The domestic market that has the good-quality cartoons through exportation and importation to make people of all ages enjoy them. and also the Korean webtoon is in the center of the global webtoon markert. The early model of Korean webtoon, line-webtoon is translated in English, Chinese, Thai language and Indonesian language to use on the mobile applications and web. Nevertheless, It is just the stating point. With Eradicating of the Achilles heel of the digital contents, illegal distribution and finding materials for cultural discount rate minimized cartoon, The Korean webtoon can become the highest in the global market and hold it. Moreover, not only webtoon but also published cartoons are existing together to have a long run. Beyond the existing cartoon books printed on paper, we should reach toward the digital books with portability and economic feasibility to make the contents stay out longer.

• Nutritional Sciences
• /
• v.7 no.2
• /
• pp.65-69
• /
• 2004

A study was carried out to determine the effect of a very low-carbohydrate diet on weight gain, body composition, and serum levels of cholesterol, triacylglycerol, glucose, ketone bodies and insulin. Twenty rats (mean initial weight, 212 g) were divided into two groups and each group was assigned a conventional high-carbohydrate diet (control) or a very low-carbohydrate diet containing 59.8% ground pork rind snack and fed the diet for four weeks. Average daily body weight gain was not different between the two groups during the first two weeks, but was significantly lower in rats fed the very low-carbohydrate diet than in those in the control group during third (p<0.05) and fourth weeks (p<0.01). Feedintake as well as energy intake was lower in rats fed the very low-carbohydrate diet than in those in the control group. The very low-carbohydrate diet reduced (p<0.01) serum triacylglycerol (34$\pm$83 vs 82$\pm$8 mg/l00 mL) and insulin (3.90$\pm$0.53 vs 7.60$\pm$0.61 $\mu$IU/mL) levels, while increasing (p<0.01) ketone body level (368$\pm$25 vs 236$\pm$24 $\mu$mol/L), compared with the control. Serum glucose and total cholesterol levels were not different (p>0.05) between the two dietary treatments. Proximate analysis of carcasses showed that the very low-carbohydrate diet decreased (p<0.01) body fat (26.1$\pm$1.04 vs 30.5$\pm$0.86%), while increasing (p<0.01) body protein (63.1$\pm$0.94 vs 59.4$\pm$0.70%) contents. Results indicate that short-term feeding of a very low-carbohydrate diet is beneficial for alleviating risk factors known to involve cardiovascular diseases or artherosclerosis. However, more studies with model animals as well as humans are recommended to examine the long-term health benefits of low-carbohydrate diets.