• Journal of the Korean earth science society
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• v.28 no.1
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• pp.123-135
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• 2007

Five episodes of the large-scale transport of air pollutants in East Asia and its inflow into the Korean Peninsula have been analyzed through satellite and ground observations. These episodes include regionally polluted continental airmass, which is created by the pollutants produced in the cities and the industrial regions in China, to land on or pass through the Korean Peninsula by way of the Yellow Sea. The analysis of the NOAA satellite observation data made it possible to create images by combining 3 channels of visible and infrared ray ranges and also to identify the distribution and the transport of the air pollution mass over the Yellow Sea. The ground observation data of the air pollutants gathered in Chongwon were found highly valuable in verifying the information in comparison with ones from the satellite. Especially, regarding the episodes of large-scale transport of the air pollutants, the difference of concentration between $PM_{10}\;and\;PM_{2.5}$ was found small with the increase of $PM_{2.5}$ value. The concentration of $PM_{10}$ in the episode of yellows and, however, was found much higher than that of $PM_{2.5}$. In the episode of 27 January 2006, the inflow of the regionally polluted continental air mass into the central and southwestern region of the Korean Peninsula was observed sequentially in the various ground observatories as well as by the satellite. The north-northwest airflow dissipated the clouds over from Mt. Halla in Jeju Island up to far downwind, reduced air pollution, and created von $K\acute{a}rm\acute{a}n$ vortex.

• The Journal of Korean society of community based occupational therapy
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• v.3 no.2
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• pp.85-95
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• 2013

Objective : The purpose of this study was to know the degree of the perceptions and the needs regarding the driving rehabilitation of students of occupational therapy. Method : Subjects are 317 students, department of occupational therapy of 4 colleges in Gyeongnam and Busan. Questionnaire consist of 15 questions of perceptions of the driving rehabilitation, 9 questions of needs of the driving rehabilitation, and 4 questions of subjects. The period of surveys was from 12, May to 12, Jun, 2013. Result : 73(23.1%) students answered that they knew about the driving rehabilitation and 47(14.8%) students answered that they experienced the driving rehabilitation. The answers about the channels of knowing and experience regarding driving rehabilitation had 'through the college'. The perceptions regarding the specialist and programs of driving rehabilitation was low compared with the knowing of the driving rehabilitation. The perception of needs regarding the driving rehabilitation for people with disabilities was high and they answered that they need the educations regarding driving rehabilitation. The 3rd grade students had high degree of perceptions and needs compared with 1st and 2ed grade students. And A college students had high degree of perceptions and needs compared with C and D college students. Conclusion : It is important that subject regarding of the driving rehabilitation include in curriculum of occupational therapy for strengthen the role of the occupational therapist in the driving rehabilitation.

• Journal of the Korea Computer Graphics Society
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• v.15 no.3
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• pp.1-9
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• 2009

Traditional computer simulation uses only traditional input and output devices. With the recent emergence of haptic techniques, which can give users kinetic and tactile feedback, the field of computer simulation is diversifying. In particular, as the virtual-reality-based surgical simulation has been recognized as an effective training tool in medical education, the practical virtual simulation of surgery becomes a stimulating new research area. The surgical simulation framework should represent the realistic properties of human organ for the high immersion of a user interaction with a virtual object. The framework should make proper both haptic and visual feedback for high immersed virtual environment. However, one model may not be suitable to simulate both haptic and visual feedback because the perceptive channels of two feedbacks are different from each other and the system requirements are also different. Therefore, we separated two models to simulate haptic and visual feedback independently but at the same time. We propose an adaptive mass-spring method as a multi-modal simulation technique to synchronize those two separated models and present a framework for a dual model of simulation that can realistically simulate the behavior of the soft, pliable human body, along with haptic feedback from the user's interaction.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.2
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• pp.343-361
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• 2015

The financial industry in South Korea has witnessed a paradigm shift from selling traditional loan/deposit products to diversified consumption channels and financial products. Consequently, personification of financial services has accelerated and the value of finance-related personal information has risen rapidly. As seen in the 2014 card company information leakage incident, most of major finance-related information leakage incidents are caused by personnel with authorized access to certain data. Therefore, it is strongly required to confirm whether there are problems in the existing access control policy for personnel who can access a great deal of data, and to complement access control policy by considering risk factors of information security. In this paper, based on information of IT personnel with access to sensitive finance-related data such as job, position, sensitivity of accessible data and on a survey result, we will analyze influence factors for personnel risk measurement and apply data access control policy reflecting the analysis result to an actual case so as to introduce measures to minimize IT personnel risk in financial companies.

• Korean journal of communication and information
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• v.76
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• pp.92-123
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• 2016

This paper aims to examine systematically how audiences' exposure to crime news influences their multicultural acceptability. In particular, the analysis has focused on how the variance in the effects of contacts with crime news on foreigners takes place, according to the types of media and communication favored among the audiences. Also, with perceived risk toward crime as a mediating variable, this research scrutinizes the way crime news on foreigners comes to influence multicultural acceptability among the audiences. While various news sources and communication channels are influential in strengthening the perceived possibility of crime on the individual level, the results show, television seems to be particularly more effective with regards to the perceived prevalence of crime on the social level (RQ 1). Also, while contacts with crime news through 'dialogic' media rarely influence multicultural acceptability significantly, 'discursive' media and face-to-face contacts have negative impacts on the multicultural acceptability (RQ 2). Consequently, perceived risk on the social level seems to play the role of full mediation in the process where audiences' contact with crime news through discursive media influences their multicultural acceptability (RQ 3). Based on these findings, both theoretical and practical implications were discussed.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.47 no.2
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• pp.47-55
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• 2010

The power line communication channel has characteristic variation problems which are caused by load. The spread spectrum technique has been used to overcome these problems. One of that is the direct sequence spread spectrum(DS/SS) system which is not necessary to additional hardwares. The BER of DS/SS system is decreased by longer length of PN code, but data transfer rate is decreases, so data transfer rate is hard to satisfies their own specifications especially in narrowband PLC systems. Spread Spectrum system with Dual-processing Gain tries to reflect cyclic characteristics of power line noise. But that system assumes that shapes of power line channel are symmetrical with respect to the 1/4 point of main frequency(60Hz in Korea), therefore cannot achieves various shapes of real power line noise. Thus in this paper, noise adaptive DS/SS system which PN code is changed by noise levels for various channel noises is proposed and simulated. The different kinds of noises are modeled and measured for simulation, the proposed system is verified that has lower data transfer rate and lower error rate than conventional system by simulation results.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.15 no.2
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• pp.171-181
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• 2020

As expanding marketing channels via social media, a small number of ordinary people have played a role in the information disseminator on social media. Therefore, this study aims to propose efficient social media marketing operation strategies by analyzing the influence relationship from various prospective on beauty channel social media marketing This study examined how beauty channel social media experience affects satisfaction and purchase intend. The components of social media experience were divided into entertainment, interaction, trendiness, usefulness for analysis. Social media experience was confirmed as a factor having significant effect on satisfaction and purchase intend. As a result, the social media experience had a significant effect on the satisfaction and purchase intend and the influence relationship of social media experience on each component was found to be entertainment, usefulness. Also, the expertise of beauty influencers had a significant influence on satisfaction and purchase intend. It is expected that the study results would be available as important data for beauty influencer-based marketing. This study attempted to search for a marketing stratege plan for efficient consumer management and derive and suggest practical implications.

• Information Systems Review
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• v.7 no.1
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• pp.153-171
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• 2005

As the mobile telecommunications industry in Korea boasts record-high revenue from its businesses, consumers and other industries are looking for new business applications and opportunities using mobile technologies. Many firms are seeking guidelines or business models for an effective use of this new mobile technology in their operations. This paper reviews the characteristics that distinguish mobile marketing, and analyzes marketing approaches which utilize the potential of the new mobile technologies. This paper shows that the new mobile advertising channel is not only complementary to traditional marketing channels, but also delivers benefits for multiple parties involved in mobile marketing. The key success factors in the new OB (Oriental Brewery) marketing campaign include a shortening of the stages in the AIDMA model and a broadening of customer contact points by exposing the brand through well-coordinated marketing efforts. The OB case shows that a mutually beneficial relationship between co-marketing participants can lead to a win-win marketing strategy. It also highlights that collaborative channel management in mobile marketing methodology is critical for successful mobile marketing.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.3
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• pp.21-31
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• 2014

In this paper, we propose VLC(visible light communication) based multi-hop multimedia data transmission system. The main contributions and features of the proposed system are as follows. First, the contribution of this research is to develope the LED communication based multi-hop transmission network system which can transmit multimedia data(audio data, video data) with long distance. Second, the developed system has the following features: In transmitter, audio data and video data are transmitted via multi-hops using two channels. The relay in audio channel receives digital audio signal by using photo diode and then transmits the signal to receiver after error checking and amplifying. The receiver receives the encoded audio data via photo diode and then converts to analog audio signal by using decoding and amplifying. The relay in video channel receives video signal by using photo diode and then amplify the video signal using OP-AMP and then transmits the signal to receiver. The receiver amplifies the received signal from photo diode and then sends it to the monitor. The performance evaluation of the proposed system is conducted in the laboratory with fluorescent light source. The results of the performance evaluation confirm that the system can provide high quality multimedia data transmission from transmiter to receiver via multi-hop relays in a long distance while we can see there are differences in the transmitted multimedia(audio and video) quality according to the used LED colors.

• Korean journal of communication and information
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• v.74
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• pp.109-135
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• 2015

This study investigated the news report tendency and frame by three major Korean television networks(KBS, MBC, and SBS) in their news reports on issues involving their own interests and considering in social level. The three issues chosen for this study are 'advertising regulations for total amount', 'the reallocation of 700MHz spectrum' and 'raising TV license fee'(this issue applicable only to KBS). By using content analysis method, this study identified extremely weighted tendency toward themselves by the network television channels. They have used highly biased tone and sources to reinforce their private interests in news reports about the three controversial issues. In terms of story content, the news reports have used attribution of responsibility frame dominantly in 'advertising regulations for total amount' issue, whereas the moral frame was dominant in the other two issues.