• The Transactions of the Korea Information Processing Society
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• v.5 no.12
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• pp.3158-3164
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• 1998

본 논문에서 구축한 시스템은 서버에 설치된 통계패키지인 Xlisp-Stat을 이용하여 인터넷 상에서 통계분석과 통계 학습을 겸한 통계학습시스템이다. 이 시스템은 CGI 프로그램에 의하여 Xlisp-Stat과 웹 서버와의 인터페이스 모듈이 구현되었으며, 특히 통계분석 결과가 그래프인 경우에 브라우저에 출력이 가능한 GIF 이미지로 변환하여 실시간으로 학습자에게 전송하도록 설계하였다. 또한 학습 페이지는 기술통계를 중심으로 학습 내용을 구성하였으며, 학습 효과를 높이기 위하여 인지적지연 시간을 최소화하도록 설계하였다.

• Cartoon and Animation Studies
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• s.10
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• pp.149-157
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• 2006

With the expansion of the Internet population, the online market is achieving a rapid growth and the size of the Internet advertisement market is increasing at a high rate. Different from passive types of information transmission, online media allows active two way communication thanks to communication and network technologies, so they can ascertain the effects of advertisement and users' response immediately. Rich media refer to such new advertisement techniques on the Internet, and are expected to lead the future Internet advertisement market. Thus, the present study purposed to analyze the visual expression elements of rich media advertisements in order to understand and enhance the effects of rich media advertisements with higher interactivity than existing Internet advertisements, and to propose guidelines for applying unique designs for the promotion of businesses and organizations and the provision of effective information to users.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2002.11a
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• pp.215-219
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• 2002

인터넷의 급속한 성장으로 e비즈니스의 인터넷 사용이 증대되었다. 인터넷 환경에서는 새로운 인터넷 사용자라는 소비자를 대상으로 인터넷 소비자 행동에 관한 연구가 중요한 분야로 자리잡게 되었다. 인터넷상에서의 소비자 행동을 설명하기 위해 온라인 인지절차 (Cognitive process)에 관한 연구로, 웹 사이트에 대한 소비자의 태도에 미치는 영향을 밝히는 연구들이 수행되었다. 웹 사이트에 대한 소비자의 태도에 따른 개인화된 마케팅을 위해서는 웹사이트를 소비자의 특성을 고려해서 개인화된 웹사이트를 운영해야 한다. 개인의 정보 시스템 사용에 대한 설명을 위하여 많은 모형들이 개발되어 왔다. 기술 수용 모형(Technology Acceptance Model: TAM)은 개인의 정보 시스템 수용에 영향을 미치는 요소를 설명하기 위하여 가장 폭 넓게 사용되고 있는 모형이다. TRA 모형에 따르면, 개인의 사회적 행위는 그 행위의 결과에 대한 신념에 의해 영향을 받는다고 할 수 있다. 본 연구에서는 고객의 신념을 신뢰 (Trust), 유용성 (Usefulness), 사용의 편의성 (Ease of Use), 위험 (Risk), 보안통제 (Security control)로 분류하고, 고객의 실제 사용 (Usage)을 인터넷 뱅킹 환경에서 측정하여 고객세분화에 적용하였다. 세분화된 고객집단을 분류하기 위해서 인공신경망, 판별 분석 기법을 적용하여 웹 사이트에서 사용할 수 있는 개인화 모형을 개발하였다.

• Asia Marketing Journal
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• v.6 no.1
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• pp.17-42
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• 2004

본 연구에서는 인터넷 쇼핑몰의 생존과 발전을 위한 단계로 방문빈도, 방문 지속성의 전략이라고 할 수 있는 쇼핑몰 밀착도를 결정하는 요인들과 플로우에 영향을 주는 요인, 전형성에 영향을 주는 요인, 인터넷 쇼핑몰 유형에 따른 인터넷 쇼핑몰 속성 태도와 인터넷 쇼핑몰 전형성의 관계, 소비자 행동 측면의 플로우 경험과 전형성의 영향정도 등을 조사한다. 이를 기반으로 인터넷 유형을 분류하여 인터넷 쇼핑몰의 특성 및 콘테츠 특성에 대한 전형성 정도를 세분화할 수 있다. 또한 밀착도와 충성도의 관계를 파악함으로 인해 쇼핑몰의 방문빈도 및 방문지속성의 유지가 기업의 장기적인 발전에 어느 정도 기여를 할 수 있는지에 대해서 파악할 수 있다. 본 연구결과 인터넷 쇼핑몰 특성은 전형성에 정(+)의 영향을 미치며, 콘텐츠 특성은 플로우에 정(+)의 영향을 미쳤다. 이를 통해 현재 오프라인을 기반으로 한 쇼핑몰인 경우 이 전에 오프라인에서 유지해 오던 상품제시, 보장, 명성 등이 온라인까지 확장되었다는 의미이며, 이러한 현상은 현재 오프라인 소매점에서 온라인 소매점으로 확장할 경우 이들 특성들이 전이(transfer)된다는 사실을 쇼핑몰 관리자들은 인지해야 한다. 또한 콘텐츠 특성은 오프라인 쇼핑몰보다는 순수 온라인 쇼핑몰이 플로우에 영향을 더 많이 미치는 것으로 나타났다. 그러므로 순수 온라인만을 주목적으로 창업하려는 쇼핑몰 관리자들은 콘텐츠 특성인 인터페이스 기능 강화, 톡특한 디자인 및 Lay-Out 등에 투자를 해야 한다. 위의 결과를 통해 플로우 및 전형성이 밀착도인 방문빈도 및 방문지속성에 영향을 미치며 이러한 밀착도는 소비자 충성도에 제고에 영향을 미칠 것이다.

• Journal of Internet Computing and Services
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• v.12 no.5
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• pp.127-136
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• 2011

The current study aims to examine what determinants have influences on voluntary self-disclosure in the usage of micro-blogging. Even though the usages of micro-blogging have increased at an exponential rate in South Korea, it has been not well understood the process in which people voluntarily disclose their self-information. In this regard, we tried to examine self-disclosure process on micro-blogging based on Theory of Planned Behavior (TPB). For this purpose, attitudes towards self-disclosure, subjective norm, and perceived behavioral control were set as the antecedents to self-disclosure behavior. The influences of factors including privacy concern, playfulness, informational motivation for social participation, and relational motivation on the attitude were also investigated. The results of an online survey revealed that attitude toward self-disclosure, subjective norm, and perceived behavioral control anticipated the self-disclosure behavior at a statistically significant level. The attitude was not influenced by privacy concern, informational and relational motivation, but by playfulness. The implications of these results are also discussed.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.6
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• pp.61-70
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• 2015

This study, under the assumption that there may be a difference in colours recognized depending on background lightness and colour stimulus size, applied background lightness in a differential way and conducted an experiment by comparing the sizes of stimuli equivalent to $2^{\circ}$ and $10^{\circ}$. Based on the results, by reflecting the results of this experiment as a difference in colour recognition, which may occur when the input image is converted from a large-sized screen to a mobile-sized screen, power efficiency, one of the biggest issues, can be reflected in mobile devices and may contribute to effective three-dimensional image reproduction and image quality in 3-D or hologram as well as 2-D images.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.1
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• pp.91-96
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• 2012

Ad-hoc networks can be used various environment, which it is difficult to construct infrastructures, such as shadowing areas, disaster areas, war area, and so on. In order to support to considerable and various wireless services, more spectrum resources are needed. However, efficient utilization of the frequency resource is difficult because of spectrum scarcity and the conventional frequency regulation. Ad-hoc networks employing cognitive radio (CR) system that guarantee high spectrum utilization provide effective way to increase the network capacity. In CR based wireless ad-hoc networks, cluster-head decides the existence of primary user using sensing information of primary user from each ad-hoc device. However, it is still defective research to decide cluster head among the a lot of ad-hoc devices. So, in this paper, we show the decision method of cluster head in CR based wireless and detection probabilities of primary user based on decision method of cluster head.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.5
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• pp.55-63
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• 2013

In cognitive radio networks, acquirement of position information of primary user is very important to secondary network since localization information of primary users can be utilized for improving the spectrum efficiency of secondary network and for avoiding harmful interference to primary users by using proper power control. Among various location methods, Received Signal Strength (RSS)-based localization has been widely used for distance measurements in the location detection process despite its inherent inaccuracy because it can be easily implemented without any additional hardware cost. In the RSS-based localization, the distance is measured by the received signal strength, and distance error can be caused by many factors such as fading, shadowing and obstacle between two nodes. In the paper, therefore we propose a localization scheme based on estimation of path-loss exponent to localize the location of primary users more accurately. Through simulations, it is shown that the proposed scheme can provide less localization error and interference rate to primary users than other schemes.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.5
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• pp.79-87
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• 2021

This study suggests a design process for vibrotactile interface that can apply haptic perception factors reflecting human tactile mechanisms. This process consists of 4 stages: the haptic sense requirement analysis stage, the haptic element analysis stage, the haptic perception factor analysis stage, the haptic requirement detailed design, and the prototype implementation stage. The advantage of this design process is that unnecessary tasks can be excluded in deriving and implementing user requirements, by applying haptic perception factor analysis, and the biggest feature is that research results on ergonomic mechanisms can be reflected in the haptic design, completes prototype development simultaneously while determining the haptic requirements statement by performing user evaluation, usability testing, and haptic feature optimization tasks simultaneously. This design process includes all stages from user requirements to haptic function detailed design and prototype implementation, so it is expected that general developers who lack expertise in haptic will also be able to design user-centered designs, enabling design and implementation of haptic functions at a certain level.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.2
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• pp.15-20
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• 2022

Colours are primarily composed of three properties - hue, brightness, and saturation, However, each property of colour is not independently visually recognised. Previous studies on saturation and brightness found that brightness was sensed differently depending on the degree of purity of the saturation; however, most of the psychophysical experiments used subtractive mixing. Therefore, fundamental research on colour perception based on display is needed. In this study, we conducted a psychophysical experiment and to investigate the visual characteristics of saturation and brightness based on a display with a self-luminous system. After selecting a certain brightness in the additive-mixed display, the experiment was conducted by adjusting the saturation of the main colours. Thus, by analysing the experimental results, we determined whether the results were the same as ones from subtractive mixing and whether the data are meaningful for the characteristics of colour perception. We also suggested future research directions.