• Journal of Information Management
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• v.21 no.1
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• pp.34-52
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• 1990

The probabilistic reasoning method using Bayesian theory is studied to use uncertain or incomplete knowledge in ways that take the uncertainty into account. This method presented for knowledge acquisition process of expert system to evaluate certainty degree of input knowledge.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2017.11a
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• pp.193-194
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• 2017

In this research, the density value of the turbid solution is measured by using the principle of inexpensive but easy Hydrometer method for cement delivered to the actual raw concrete plant, By analyzing the correlation of powder aid, we will try to present a scheme that can be utilized as a method of acquisition acquisition inspection. As a result of the analysis, it was found that there was a large difference between the measured powders assisted with cement powder on the report, and the correlation with the actually measured powder aid Hydrometer density value was good. Therefore, using the method of Fig. 3, it was possible to know that the degree of powder quality of cement delivered to the raw concrete factory can be evaluated quickly and utilized at the time of argument inspection.

• Journal of Biomedical Engineering Research
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• v.28 no.1
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• pp.55-65
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• 2007

This paper sought to investigate pupil size variability, pupil size parameters in terms of time domain and frequency domain, the autonomic activity change induced by posture change, degree of sleepiness and cognitive task (math task). With a specially designed pupil image acquisition system in the dark room, these three kinds of experiments were performed to induce a dominant state of sympathetic or parasympathetic activation. Electrocardiogram and pupil size were measured in all the experiments. Based on three experiments, we calculated heart rate variability. In the pupil size analysis, we calculated the mean and standard deviation of pupil size (in time domain), and proposed several frequency bands that exhibit different autonomic activation between different sessions. The results indicate that in terms of heart rate variability, posture change exhibited significant differences but not between sleepiness level, or between cognitive task. Pupil sizes differed only during the postures. And we found some frequency bands that correlated with autonomic activation in each experiment. While heart rate variability reflects posture change that need cardiac control, pupil size variability reflects not only posture induced autonomic activation but sleepiness and cognitive load, which is processed in the brain, in time and frequency domain parameter.

• Journal of Digital Convergence
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• v.10 no.6
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• pp.181-187
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• 2012

This study inquires into what effect the tax burden of investors, for typical taxes related to real estate investment; acquisition tax, comprehensive real estate holding tax, and transfer income tax, might have on the real estate investment behaviors; the purpose of long-term investment. These real estate investment behaviors have been analyzed to see how much they affect investment performance such as realized compound yield. This study model, which considers the fact that the choice of investment behavior for the degree of tax burden of investors may lead to different results in real estate investment, is expected to be an effective decision-making tool for investment.

• The Journal of Korea Robotics Society
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• v.10 no.3
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• pp.146-153
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• 2015

In order to contain as much information as possible in a single image, a wide FOV(Field-Of-View) imaging system is required. The catadioptric imaging system with hyperbolic cylinder mirror can acquire over 180 degree horizontal FOV realtime panorama image by using a conventional camera. Because the hyperbolic cylinder mirror has a curved surface in horizontal axis, the original image acquired from the imaging system has the geometrical distortion, which requires the image processing algorithm for reconstruction. In this paper, the image reconstruction algorithms for two cases are studied: (1) to obtain an image with uniform angular resolution and (2) to obtain horizontally rectilinear image. The image acquisition model of the hyperbolic cylinder mirror imaging system is analyzed by the geometrical optics and the image reconstruction algorithms are proposed based on the image acquisition model. To show the validity of the proposed algorithms, experiments are carried out and presented in this paper. The experimental results show that the reconstructed images have a uniform angular resolution and a rectilinear form in horizontal axis, which are natural to human.

• Journal of Korea Spatial Information System Society
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• v.1 no.1 s.1
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• pp.69-78
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• 1999

In the 21st century, called as unlimited competition era, the level of transportation service is a key factor to determine the degree of an international competitiveness. In order to get the better transportation service, a various of transportation infrastructures have to be constructed. An efficient transportation operation techniques are to be adopted as well. In this paper, a core factors of real time traffic information acquisition is suggested based on the national basic maps and GPS techniques. In detail, map matching and travel time estimation techniques are developed and applied to Kangnam area for case study.

• Journal of Families and Better Life
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• v.9 no.1 s.17
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• pp.187-202
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• 1991

The purpose of this study is to analyze what attitude housewives hove to the TV advertisement and how their purchasing behavior is proceeding by information acquisition. Questionaire survey method was used in this research. The sample was taken from 437 housewives living is Seoul, form 4th of Feb. to 13th of Feb, in 1991. Used statistical methods were Frequency, Percentage, Crosstabs, One-way Anova, Duncan-test, and Regression Analysis. The major findings are summarized as follows : 1) The attitude to the TV advertisement according to the socio-demographic variables : TV advertisement seeing and hearing, the necessity of TV advertisement, and the attitude to the new advertisement are all found significant difference by age and education. The feeling to the false of TV advertisement is found significant difference by age, education, and income. 2) The purchasing behavior with TV advertisement information is most influenced by utilization of TV advertisement for all four goods(home medicine, milk product, detergent, durable goods). 3) The interest to the TV advertisement according to the TV advertisement information acquired: The degree to the utilization of TV advertisement and the necessity of TV advertisement when they buy goods were most influenced by conversation about the TV advertisement. 4) The purchasing behavior to the TV advertisement information acquired : The degree of influence was more affected by conversation about the TV advertisement for four goods, The degree of confidence was influenced by conversation about the TV advertisement for four goods. The degree of confidence was influenced by conversation about the TV advertisement for house medicine and detergent. The degree of satisfaction was not significant for all four goods, and the comparative appraisement was influenced by conversation about the TV advertisement for detergent and durable goods.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.6
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• pp.63-68
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• 2018

Offloading is a method of communicating, processing, and receiving results from some of the applications performed on local computers to overcome the limitations of computing resources and computational speed.Recently, it has been applied in mobile games, multimedia data, 360-degree video processing, and image processing for Internet broadcasting to speed up processing and reduce battery consumption in the mobile computing sector. This paper implements a viewer that enables users to convert various flat-panel images and view contents in a wireless Internet environment and presents actual results of an experiment so that users can easily understand the images. The 360 degree spherical image is successfully converted to a plane image with Double Panorama, Quad, Single Rectangle, 360 Overview + 3 Rectangle depending on the image acquisition position of the 360 degree camera through the interface. During the experiment, more than 100 360 degree spherical images were successfully converted into plane images through the interface below.

• Korean journal of communication and information
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• v.60
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• pp.75-103
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• 2012

The purpose of this study is to explore the meaning and the effect of communication as social capital, which needs to be evaluated empirically focusing on corporate reputation. Also, it tried to analyze consumers' communication network in the structural, substantial, and relational level, which is to verify how characteristics and meanings of communication network structure affect to a good corporate reputation. A survey toward 200 participants was conducted during 5 days from March 29 to April 3, 2012. Characteristics of communication network structure of a corporation with higher reputation is analyzed using the index such as degree, degree centrality, and density. The findings of the study show that a corporation with higher reputation has higher network degree, degree centrality, and density compared to a corporation with lower reputation. Consumers of a corporation with higher reputation get information from various overlapping sources. It allows them to share similar interpretation, which could elevate the degree, degree centrality, and density of network. It also proved that when the network density is high, a corporation with higher reputation can distribute information much faster and easier. Moreover, in the substantial level of social capital, product/service information network has high degree and density rather than corporate issue information network. Likewise, degree and density of information acquisition network was higher than those of information provision network. Also, this study verified the effect and relationship between the network structure characteristics and corporate loyalty in a relational level. In this way, the positive effect of the degree centrality on corporate loyalty was supported. In conclusion, as consumers share more information from overlapping sources, the degree of communication network gets higher. Throughout this network, the diffusion of information among consumers would be activated, and this confirmed that corporate reputation and corporate loyalty is closely related.

• Informatization Policy
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• v.22 no.2
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• pp.57-74
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• 2015

This research has been performed in order to investigate the probability that cultural factors in everyday life affect individuals' political behaviors. Using the data collected from 2014 Seoul mayoral election, it analyzes how the degree to which individuals have various cultural capital influences their types of political information acquisition through media. The outcomes suggest following three. First, the more cultural capital individuals have, the more active they are in obtaining political information using diverse media. Second, those who mark high score in the self-cognitive area of cultural capital, such as cultural preferences and cultural tastes, tend to gather political information throughout formal news-oriented media such as on-line news, TV, and newspapers. Third, when types of media are classified into old and new, those who have a variety of cultural capital are likely to prefer new media as their major source of political information acquisition.