• Publications of The Korean Astronomical Society
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• v.18 no.1
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• pp.37-41
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• 2003

We have developed a seeing monitoring system and measured seeing variation of the Bohyunsan Optical Astronomy Observatory (BOAO) and the Sobaeksan Optical Astronomy Observatory (SOAO) using a small telescope system. Our seeing monitoring system is similar to the differential image motion monitor (DIMM) installed at the ESO. The ooly difference between the BOAO and the SOAO seeing monitoring system is a detector system, a video camera at the BOAO and ST-4 camera at the SOAO. We confirmed that the seeing monitoring system at the SOAO can measure average seeing size inspite of its simple detector system. From the BOAO seeing measurement, we found that the seeing size changes fast. We expect that our seeing monitoring system could be used for real time seeing monitoring after some improvement, and the data to be obtained would be very useful when we build adaptive optic system in the future.

• Journal of the Korean earth science society
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• v.30 no.4
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• pp.485-494
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• 2009

We report patterns of astronomical seeing at KSA SEMO (Korea Science Academy Space Earth and Man Observatory). Though the data of the seeing measured at the local observatory is essential in identifying the seeing of the observatory, systematic measurement of seeing has not been made in Pusan yet. For this reason, KSA SEMO adopted the Santa Barbara Instrument Group (SBIG) Seeing Monitor to constantly record the seeing. The seeing monitoring was done through an elaborate procedure involving direct CCD images in the focal plane which were subsequently analyzed for the full width at half maximum (FWHM) Gaussian widths. Based on the seeing monitoring for 8 months, we classified five patterns of the seeing at KSA SEMO: 'Sunset/Sunrise Effect', 'Extreme Fluctuation', 'Sudden Increment', 'Daily Variation' and 'Stable Condition'. Seeing was generally good from 1:00 am to 3:00 am than other times, and it was also better in Winter than in Summer.

• The Journal of the Convergence on Culture Technology
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• v.7 no.2
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• pp.303-308
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• 2021

This paper deals with the meaning of seeing in John Ruskin's aesthetic theory. For Ruskin, seeing is the essential key to define moral insight. To consider the relationship between the education of sight and the delight from experience of seeing in nature within Ruskin's moral thought, I analyse Ruskin's various lectures and texts, including Modern Painters, The Story of Halcyon, Of the Science of Light, Proserpina, and Praeterita. The first section of the body investigates the relations among pleasure, thought, sight which compose Ruskin's moral ecology, and then the second section traces the theoretical logic formed the concept of seeing as moral perception of human being. The third section demonstrates correspondence between aesthetic experience of pleasure and the way of seeing as an education for the mystery of Nature and God. After these theoretical processes, this paper finally insists that seeing is the factor of formation of an ecological sensibility corresponding with development of moral perception generated within the hierarchical structure of human-nature-god.

• Journal of the Korea Society of Computer and Information
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• v.25 no.1
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• pp.101-107
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• 2020

We propose a realistic seeing through visualization methods in mixed reality environment. When a user wants to see specific location beyond a wall in indoor environment. The proposed system recognizes and registers the selected area using environment modelling and feature-based tracking. Then the selected area is diminished and the specific location is visualized in real-time. With the proposed seeing through methods, a user can understand spatial relationship of the building and can easily find the target location. We conducted a user study comparing the seeing through method to conventional indoor navigation service in order to investigate the potential of the proposed seeing through method. The proposed seeing through method was evaluated in navigation time in comparison with conventional approach. The proposed method enable users to navigate target locations 30% faster than the conventional approach.

• Journal of Astronomy and Space Sciences
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• v.33 no.2
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• pp.137-146
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• 2016

The correlation between meteorological data collected at the optical wide-field patrol network (OWL-Net) Station No. 1 and the seeing of satellite optical observation data was analyzed. Meteorological data and satellite optical observation data from June 2014 to November 2015 were analyzed. The analyzed meteorological data were the outdoor air temperature, relative humidity, wind speed, and cloud index data, and the analyzed satellite optical observation data were the seeing full-width at half-maximum (FWHM) data. The annual meteorological pattern for Mongolia was analyzed by collecting meteorological data over four seasons, with data collection beginning after the installation and initial set-up of the OWL-Net Station No. 1 in Mongolia. A comparison of the meteorological data and the seeing of the satellite optical observation data showed that the seeing degrades as the wind strength increases and as the cloud cover decreases. This finding is explained by the bias effect, which is caused by the fact that the number of images taken on the less cloudy days was relatively small. The seeing FWHM showed no clear correlation with either temperature or relative humidity.

• International Journal of High-Rise Buildings
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• v.1 no.4
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• pp.283-300
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• 2012

Wind-induced vibrations of buildings can be perceived when movement of objects caused by the vibration is seen. However, movement of objects that would normally be expected to trigger visual perception of building vibrations is not necessarily seen in actual building environments. Therefore, to evaluate habitability to building vibrations, it is necessary to examine the influence of movement of objects on vibration perception taking into account probability of seeing the objects. As the first step in this study, those data necessary to estimate probability of vibration perception from seeing of swaying objects have been measured during normal activities in actual buildings. In addition, statistical analysis of the data has also been carried out. As the second step in this study, the probability distribution of vibration perception by visual sensation is estimated using the series of data measured in the first step. Probability of seeing object is considered in the estimated probability distribution.

• Journal of Korea Multimedia Society
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• v.24 no.8
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• pp.1171-1177
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• 2021

Measuring and evaluation of audience's visual message perception are crucial process for scientific production of visual content. This study tried to evaluate the difference of viewer's awareness of visual object depends on his or her inherent characteristics like conservatism using an eye tracker system. Especially, this experiment tested research questions about positive correlation between conservatism and peoples' eye movements following the sound visual messages. 57 subjects participated in the test. Two different groups were exposed to two visual elements representing 'the conservative' and 'the liberal'. The results showed that people tended to have different way of seeing visual objects according to their inherent characteristics. Also by comparing the gaze time at the object and area of interest(AOI) in visual, this study is able to verify the existence of 'positive way of seeing' and 'negative way of seeing'. The two different ways of seeing have their own trail of eye movement.

• Proceedings of the Korea Society of Design Studies Conference
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• 2005.10a
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• pp.248-249
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• 2005

• Publications of The Korean Astronomical Society
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• v.11 no.1
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• pp.177-196
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• 1996

We have investigated the astronomical observational environments at the Choejung-san GEODSS site which is located at the south of Taegu, Korea. As a part of the investigation, seeing and night sky brightness were measured outside nearby the GEODSS site using the Celestron 8-inch portable reflector with $192{\times}165$ pixels Lynxx CCD camera during the period of December 1994 to April 1996. The average seeing values of 4.8 arcsecond in B filter and 5.1 arcsecond in V filter were determined using the IRAF software. These values might be overestimated and would be reduced by at least 1 arc second in both filters if they were measured by more stable telescope system with solid mount and under a dome. We also compare the average seeing value at the GEODSS site with those at three other observatories, the Bohyunsan Optical Astronomy Observatory, the Sobaeksan Optical Astronomy Observatory, and the Seoul National University Observatory, for justification of the above guess. Unfortunately the night sky brightness measurement was not successful mainly due to the short exposure time. The utilizing plan of the GEOSS site is discussed based on the average seeing value, naked-eye sky brightness measurement, analysis of the existing thirty-year weather data and twenty-year urban planning of the metropolitan Taegu city for the year of 2016.

• Journal of Korean Philosophical Society
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• no.89
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• pp.37-67
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• 2010

The 21 Century is definded as an age of culture or image characterized by the fact, that modern society are being overwhelmed with virtual reality, that is full of visual images. The cultural concentration on the visual image and the excessive tendency to attend it become not only today but also ever as the leading style of culture. Nevertheless, it is particularly noteworthy that the visual image has become so one of the basic conditions of modern society, that one holds it as the society of the spectacle. So can the problem of seeing that resulted from the oculocentric culture, that is the problem of the fundamental relationship between the world and the eyes of human beings, be examined in the phenomenological sense. For this study, I believe that 『Phenomenologie de la Perception』 of Merleau-Ponty provides a important approach. The theme of this study is to refer, first, how man has dealt with the seeing in the history of philosophy, such as Plato, Kant, and Merleau-Ponty, who although not the anti-oculocentricism, but also makes serious reflection about an excess of visual images. Second, it is to explain what characteristics and problems are located in these considerations, and thirdly, it must be brought into the light, what is the essence of the seeing with regard to the beauty, the truth and the morality.