• Journal of the Korean Data and Information Science Society
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• v.28 no.1
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• pp.87-98
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• 2017

The multivaiate empirical distribution function (MEDF) is defined in this work. The MEDF's expectation and variance are derived and we have shown the MEDF converges to its real distribution function. Based on random samples from bivariate standard normal distribution with various correlation coefficients, we also obtain MEDFs and propose two kinds of graphical methods to visualize MEDFs on two dimensional plane. One is represented with at most n stairs with similar arguments as the step function, and the other is described with at most n curves which look like bivariate quantile vector. Even though these two descriptive methods could be expressed with three dimensional space, two dimensional representation is obtained with ease and it is enough to explain characteristics of bivariate distribution functions. Hence, it is possible to visualize trivariate empirical distribution functions with three dimensional quantile vectors. With bivariate and four variate illustrative examples, the proposed MEDFs descriptive plots are obtained and explored.

• The Journal of the Korea Contents Association
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• v.11 no.4
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• pp.121-131
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• 2011

Visual tactility implies feelings of touch through sight. To be exact, the eyes are doing the touch rather than the body and the subject concerned will experience the sensation of touch by looking at an object similar to that of physical touch. This is quasi tactility to put it simply and it can be defined as to touch with the eyes. This can not only provide opportunities to experience something close to reality but also another completely different form of modern experience. Experiencing visual tactility through the use of the web permits lavish communication between the user and the designer. This paper has reorganize the concept of visual tactility, characteristic and way to use in digital contents. Visual tactility stimulates the users' emotion as such. If it was to be utilized to develop edutainment contents or web sites will foster children's capability to develope problem solving skills and raise efficiency in creative learning, and prolong the period of concentration in order to encourage revisits to the place and extend the time of stay.

• Journal of the Korean School Mathematics Society
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• v.10 no.2
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• pp.207-219
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• 2007

Students have a hard time with a formal proof, which is one of most important part in mathematics education. They were taught the proof with algebraic visual materials using technology and specialized visual materials. But, they experienced the difficulty in justifying due to the lack of experimental recognition with the representation using technology. The specialized visual materials limited the extension of mathematics thinking of students because it worked only for the case that is fixed. In order to solve this type of problem, we made algebraic visual materials for 9th graders using technology and generalized visual materials so that students experience for themselves to help them to experience experimental justification, thus we recognized that they were improved in enhancing mathematical thinking.

• Archives of design research
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• v.15 no.1
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• pp.339-347
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• 2002

Comic strip is a narrative sequence of cartoon panels. Comic strip book as a visual medium of communication is very effective for grasping objects visually as well as for developing creative thinking and culturing aesthetic sentiments. These aesthetic experiences awaken us to formative sentiments, The purpose of present paper is to study the visual streaming of the illustrated comic strips. The typical comic strip books are analyzed and the characteristic of visual communication is studied. The narrative illustrations in the form of comic strips encourage us to have a prosperous experience and to understand new formative artistry and the remarkable effect of visual experience.

• Journal of the Korea Convergence Society
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• v.9 no.11
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• pp.217-225
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• 2018

Different eye-heights due to individuals' body heights may cause different sensory experiences against the same visual scene, eventually leading to their longer-term psycho-social and developmental individual differences. Accordingly, the present study compared sensory properties of photographs for the same scene taken from two different camera-heights (i.e., eye-heights). Two sets of photographs were taken in parallel from two cameras attached to a different height on the same pedestrian's body. Analysis of the photographs revealed that both the levels of visual saliency and complexity were greater for the photographs taken from the high eye-height than those from the low eye-height. The results indicate a possible difference in sensory properties of visual scenes perceived from two different heights, potentially exposing taller individuals to richer and more diverse sensory experiences than shorter individuals.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.281-285
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• 2008

In the digital media era, coded and non-coded communication are used to convey the message. As the computer interface has been adopted human communication methods, non-coded communication has bee used in the computer interface as well. The changes of message structure in the computer interface have an effect on shifting the way of user's message acceptance from passive to active. The recently developed computer user interfaces are for user to experience diverse visual effect The communication conveyed with this visual effects could be vague but user can conceive strong impact. This experience is understood not only through the visual experience from a monitor screen but also with a sense of tactile. The meaning of sensual and spectacle motion image could be ambiguous. However in the experience of using an interface, it plentifully expands the human sense by giving a visual experience on a whim. The sensually extemporaneous and splendid visual effect that has vague meaning has been very common happening in digital media environment.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.1009-1014
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• 2009

Meta-thinking is a kind of thinking beyond certain scope or border, which sees objects as an expanded definition exceeding its essence. It can be experienced when people come into contact with new things. As for digital media, experience acquired from computer screen makes users' thinking be changed continuously and help their thinking to be expanded. Today, studies on development of digital technology regarding virtual reality (VR) and experience obtained from digital media become a topic of conversation, however, this experience depends on the sense of sight through screen. Actually, transparent experiences in digital media are not the same with those in real world, therefore, this study investigated experience expansion through interaction with real things which are much closer to daily lives than virtual experiences. It can be found in media art which induces positive participation of audiences and shows them a new meaning through delight and amusement experienced in the process of interaction. Visual expression in digital media should be more than spectacular which is only full of excessive images. In addition, interface should not be remained as an expression from technological attempts, instead, it is necessary to find humans aspiration with meta-thinking which accepts things expansively and visualize their experiences.

• Journal of the Korean earth science society
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• v.31 no.1
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• pp.71-87
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• 2010

The purpose of this study was to explore 8th-grade students' imageries of the Earth. We analyzed the middle school students' imageries about the Earth represented with words and drawings in Earth Systems Understanding (ESU, hereafter) framework. The students' imageries about 'the Earth' are vary by their experiences and prior-knowledge, which significantly impacts their imagery construction. Especially, the students' ESU were characterized into two aspects: One is a macroscopic view point based on full-objects of the Earth by indirect experiences and the other is everyday view point based on scene of the Earth surface and environment by direct experiences. Results revealed students' imageries about the Earth were impacted by visual experiences and those students' ESU were more represented by drawing as visual imagery than by words, formal language. The negative imageries were mainly represented through interactions of the Earth subsystems.

• Proceedings of the Korean DIstribution Association Conference
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• 2003.05a
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• pp.149-175
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• 2003

1990년대 이후 인터넷을 비롯한 각종 기술의 발달로 TV 홈쇼핑, 인터넷 쇼핑, 카탈로그 쇼핑, 모바일 쇼핑 등과 같은 새로운 소매업태가 등장함에 따라 각기 다른 소매업태, 즉 각기 다른 쇼핑 환경들이 어떻게 소비자의 가치지각에 영향을 미치는 가에 대한 연구가 필요성이 제기되었다. 이를 위해 본 연구에서는 인지 심리학의 한 이론인 인지 연속성 이론의 동태적 과업시스템을 소비자의 쇼핑 행동에 적용하였다. 즉 소비자의 쇼핑 경험을 소비자와 쇼핑 환경이 상호작용하는 동태적 과업으로 간주하였으며 이에 따른 가치지각을 연구하고자 한 것이 본 연구의 목적이다. 본 연구에서는 동태적 쇼핑 경험의 구성요소로서 내ㆍ외면적 특성인 소비자의 쇼핑성향과 쇼핑 환경을 정의하였으며 소비자의 경험가치에 있어서는 Holbrook의 경험가치 척도를 적용하여 소비자의 동태적 쇼핑경험이 쇼핑가치지각에 어떠한 영향을 미치는 가를 실증적으로 분석하였다. 본 연구에서 적용한 경험가치척도는 경제적 가치, 효율성, 내면적 즐거움, 현실도피성과 같은 추구 가치와, 시각적 매력, 엔터테인먼트 가치, 서비스 우수성과 같은 수동적 가치로 구분되며 실증분석 결과 이러한 경험가치들은 각각 동태적 쇼핑 경험의 내ㆍ외면적 특성에 따라 서로 다른 영향을 받는 것이 검증되었다.

• Journal of the Korea Society for Simulation
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• v.22 no.1
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• pp.53-61
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• 2013

The purpose of this paper is to examine how the humans learn and perceive the weight of objects corresponding to visual information in virtual environment. We conducted two kinds of load-on-tasks with two virtual objects that have same weight but different visual cues; have same visual cues but changed weight by trails. We found that the subject could not generate appropriate force for the smaller and changed weight objects in the beginning of the trials. the discrepancy between the expected weight and actual force consequences sue to visually invoked size and previous experience made subjects perceive the small object were heavier. one the other hand, after the tasks were repeated, the subject responded the weights were the same or very similar when the mismatch between the expected weight and the actual weight became vanished. this means that the sensorimotor feedback influences the anticipatory control scheme and weight perception aggressively in virtual environment.