• Journal of Digital Convergence
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• v.9 no.1
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• pp.177-187
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• 2011

Along with recent rapid growth in social media and mobile media in the web 2.0 flow, represented as openness, participation, and sharing, general and various changes are essential not only in economical, social, and cultural aspects, but also in politics. Korea is finding its position in leading the upcoming social media market based upon the past IT technologies. In the past years, the people of Korea have drawn attention in the international society as early adopters in new IT products. In the current dynamic varying social media environment, the politics must put efforts to utilize a method emphasing on communication with the people. Efforts to change are essential to modify the vision of organization as smart citizens party and implement the social media strategy. In this study, we investigate and suggest methods to change in the social media environment maintaining close relation with the people in order to unite with them. Our reports will help to revisit the existing government/party operation and to rethink about the efficient operating strategy suitable for social media environment.

• The Journal of the Korea Contents Association
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• v.13 no.7
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• pp.158-167
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• 2013

This research examines the legal liability of place-shifting of TV contents by the use of the Slingbox. The place-shifting of TV contents is fair use because it is a non-commercial private use based on the relevant case law regarding time-shifting and device-shifting such as Sony, RIAA and Napster. But the sharing of place-shifting function is likely to be liable for copyright infringement. And place-shifting may not be fair use based on the cases which denied fair use of time-shifting and space-shifting because the consumers' convenience for the use of the copyrighted work is against the purpose of legislation of copyright law. Place-shifting is unlikely to have a significant effect on the potential market for TV contents because it presents lucrative new platforms to disseminate TV contents to computers and mobile devices. However it is likely to have negative effect because various devices can be the follow-up marketplaces of the copyright holders of TV contents. This study proposes the "innovative medium defense," a new doctrine to analyze liability of innovative media.

• Journal of ILASS-Korea
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• v.21 no.3
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• pp.130-136
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• 2016

NOx and PM are important air pollutants as vehicle management policy aspect. Medium-duty truck is the main source of the pollutants although the vehicle market share is only 3.5%. National emission portion of NOx and PM form the mobile sourece are 14% and 16% respectively. In this study it was investigated that characteristics of air pollutants emission on medium duty truck equipped with EGR and SCR system. Vehicle's test reflected driving cycle on the chassis dynamometer, and applied test cycle was WHVC(World Harmonized Vehicle Cycle) mode. The test cycle include three segments, represent urban, rural and motorway driving. Based on the test results NOx, PM, HC were less emitted form SCR vehicle than EGR vehicle. And CO was less emitted form EGR vehicle than SCR vehicle due to CO oxidation reaction on DPF surface. And most air pollutants reduced as average vehicle speed increased. Pollutants were less emitted on motorway section than urban and rural sections. But highly NOx emission on motorway section was verified according to increased EGR ratio on fast vehicle speed. HC and CO additional emission was identified as 68%, 58% respectively during SCR vehicle's cold engine start emission test. NOx additional emission was detected by 24% on SCR vehicle's condition of engine cold start while not detected on vehicle equipped with EGR. SCR vehicle's additional NOx emission was derived from low reaction temperature during engine cold start condition. medium-duty truck emission characteristics were investigated in this study and expected to used to improve air pollutants management policy of medium-duty truck equipped with SCR & EGR.

• Journal of Digital Convergence
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• v.15 no.12
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• pp.293-301
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• 2017

Most new products not only suddenly disappear in the market but also quickly cannibalize older products. Under such a circumstance, retailers may have too much stock, and customers may be faced with difficulties discovering products suitable to their preferences among short life cycle products. To address these problems, recommender systems are good solutions. However, most previous recommender systems had difficulty in reflecting changes in customer preferences because the systems employ static customer preferences. In this paper, we propose a recommendation methodology that considers dynamic customer preferences. The proposed methodology consists of dynamic customer profile creation, neighborhood formation, and recommendation list generation. For the experiments, we employ a mobile image transaction dataset that has a short product life cycle. Our experimental results demonstrate that the proposed methodology has a higher quality of recommendation than a typical collaborative filtering-based system. From these results, we conclude that the proposed methodology is effective under conditions where most new products have short life cycles. The proposed methodology need to be verified in the physical environment at a future time.

• Journal of the Korea Convergence Society
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• v.8 no.3
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• pp.205-214
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• 2017

The purpose of this study is to identify the perceptions of organizational members in new product development. This study suggested the successful new product development through the awareness among CEO and other members of the recognition of various factors that appear in the process of new product development by technical-oriented venture companies. Other members were more competitive in the technical area than CEO and were recognized as important strategic factors. As perceived market environment, perception of macro-environment is perceived by other members to be sensitive technical environment and economic factors, and law part is recognized as important. Recognition in a micro-environment has been associated with higher perceptions of employees and competitors, and siliar perceptions of marketing strategy and supplier relationships. This study suggested strategies for successful new product development by reducing the difference of perception between communication and environment of new products by SEMs and venture companies.

• Journal of Families and Better Life
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• v.29 no.4
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• pp.61-74
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• 2011

The purpose of this study was to target digital generation consumers and determine potential effects of their demographic characteristics and variables concerning digital consumer information upon their characteristics in purchasing clothing. This study has its implications in the sense that it determines digital generation's awareness and reception of digital consumer information and their utilization of digital consumer information source, so that it can help understand digital generation consumers' behaviors of information search and the phenomena of digital market in this age of knowledge and information, and can ultimately provide reference data useful for guidance in favorable consumer life as well as consumer education based on digital devices. The results of this study can be summed up as follows: It is found that digital generation consumers reached higher level in the awareness of digital consumer information. The reception of digital consumer information and the utilization of digital consumer information source are found as middle level. Based on these results, this study can give the following suggestions for consumer education: Lately, digital devices have been widely popularized into larger number of users, so that we have more chances to buy desired products on the web or mobile device. In particular, the rate of clothing purchase on the web tends to increase year by year. However, our digital consumers still lack in their ability to utilize digital consumer information in terms of quantitatively increasing purchase of products on the basis of digital consumer information. Thus, it is necessary to provide consumers with a formulated education in their information search and shopping using digital devices, so that they will have better ability to use digital consumer information in the future.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.3
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• pp.597-604
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• 2011

The various Smartphone platforms that are used currently make difficult to build efficient applications("apps") for Smartphone. Introduction of middleware in the Smartphone environment is being studied to solve this problem. By enhancing interoperability between server systems and Smartphone platforms as introducing this middleware supports efficiently for Smartphone apps to be developed and managed. Thus, the development of this middleware for Smartphone has become essential for the purpose of responding actively to the rapidly expanding Smartphone market. In this research, we designed and implemented Smartphone middleware which optimizes the cost and time for developing new application service and maintaining it. In order to test this implemented middleware's performance and its capabilities, we also developed university Smartphone apps and activated campus twitter.

• Journal of the Korea Society of Computer and Information
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• v.18 no.1
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• pp.103-110
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• 2013

RFID is estimated to have great potential for hospitals to reduce various costs, reconsider patients' safety, and provide high quality medical service. As the ubiquitous technology allows the medical market to expand, medical centers all around the country are fiercely competing against one another. In order to increase the hospital's competitive edge by reducing IT expenses and concentrating on medical practice, the need to establish a u-Hospital using advanced IT technology is rapidly rising. This paper implements an RFID based u-Hospital system by using ubiquitous computing technology to design a location tracking device for all surgical patients, which can secure the patients' safety and increase the quality of medical service through interlocking hospital information systems.

• Journal of Digital Convergence
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• v.15 no.4
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• pp.223-231
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• 2017

This study examined the effects of CSR characteristics on company image, CSV, customer satisfaction, customer citizenship behavior for customers using mobile phones of Samsung, LG, Apple, and Pantech in domestic market. 213 questionnaire samples are used to test 10 hypotheses using structural equation model with AMOS. Results of testing are as follows: First, economic responsibilities, law-ethical responsibilities and philanthropic responsibilities factors of CSR influence positively to company image. Second, economic responsibilities does not influence to CSV. Third, company image influence positively to customer satisfaction and customer citizenship behavior, but CSV does not influence to customer satisfaction This study shows that CSR, company image, CSV are important for customers' increasing customer satisfaction and customer citizenship behavior. Implications and limitations of this study also suggested.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.7
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• pp.122-129
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• 2014

Due to remarkable market growth of smart devices, higher performance and more functionalities are required for a core system-on-chip (SoC), and thus the power demand is rapidly increasing. However, aggressive shrink of CMOS transistor have brought severe process variations thereby adversely affected the performance and power consumption under strict power constraint. Voltage binning (VB) scheme is one of the effective post silicon tuning techniques, which can reduce parametric yield loss due to process variations by adjusting supply voltage. In this paper, an optimal supply voltage tuning based voltage binning technique is proposed to reduce average power without an additional yield loss. Considering the different LVCC margins of process corners along with speed and leakage characteristics, the proposed method can optimize the deviation of voltage margin and thus save power consumption. When applying on a 30nm mobile SoC product, the experimental results showed that the proposed technique reduced average power consumption up to 6.8% compared to traditional voltage binning under the same conditions.