• Proceedings of the Korean Nuclear Society Conference
• /
• 1997.05a
• /
• pp.193-198
• /
• 1997

본 논문의 목적은 현재 사용중인 원자력발전소내 금속파편 감시계통 (LMPS: Loose Part Monitoring System)에서 금속파편의 발생위치 평가시 온라인화된 방식을 제안하고 그 효용성을 알아보는 것이다. 현재 사용중인 LMPS들은 센서들을 통해서 기준 진폭수준 이상의 신호가 입력될 때 경보음이 울리고 신호가 기록되도록 되어있다. 이렇게 기록된 신호를 전문가가 분석함으로써 발생한 금속파편 위치 및 계통손상 가능성 등을 평가한다. 그러나 이러한 방법에 의한 신호평가시 경험이 풍부한 전문가에 의해 파편위치 및 손상부위를 평가해야 하므로 많은 시간이 소요되고 금속파편에 의한 손상 잠재성이 큰 경우 즉각적인 조치를 취할 수가 없어 방사능 누출 등의 위험한 상황에 처할 수 있다. 따라서 본 논문에서는 이러한 점에 착안하여 센서로부터의 입력신호 분석 및 평가를 위한 온라인 기법을 제안하고 구조물 모형을 이용한 실험결과를 통하여 그 효용성을 입증한다.

• Journal of Korean Philosophical Society
• /
• v.116
• /
• pp.59-78
• /
• 2010

The main purpose of this paper is to show how the notion of the language-experience correspondence is ill-grounded, and that the notion of 'literal meaning' based on it accordingly goes nowhere. Drawing on the experientialist view, I observed that language itself is a system of signs, and thus is given meaning only by way of symbolization. According to the experientialist account, the meaning of a signifier is given by means of "symbolic mapping." in which a certain portion of experience-content is mapped onto the signifier. And since symbolic mapping is partial by nature, there must come in some breach between the signifier and the experience-content mapped onto it. The partial nature of symbolic mapping repudiates the very notion of correspondence, and accordingly the notion of literal meaning. Rather, meanings are produced by means of the varied distances between the signifier and the mapped experience. In this perspective, the inquiry into the nature and structure of meaning should become part of one into that of symbolic experience. Such an inquiry may not be expected to reach the objectivity of linguistic meaning. Instead, we may be content with the relative stability in communication, which seems to be grounded in the commonality conspicuously observed at the bodily level of human experience.

• Proceedings of the KOR-BRONCHOESO Conference
• /
• 1983.05a
• /
• pp.17.3-17
• /
• 1983

Foreign bodies in the paranasal sinuses are not commonly observed. Recently, we have observed an interesting case of metalic foreign body (a fragment of bullet) which remained in the posterior part of the left ethmoid sinus for about 30 years, and report here now with a review of literature.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.47 no.12
• /
• pp.904-912
• /
• 2019

We have studied the numerical analysis about the fragment ejection velocity and spray angle when the High Explosive warhead detonated at proximity distance at an aircraft. To study the physical quantities about the warhead components is very important to assessment the vulnerability of aircraft. Generally, the physical quantities about the components of a warhead such as the mass, length, diameter and charge to mass ratio are unknown. Therefore, it is required to estimate the physical quantities by using physical continuities of similar threats. The empirical formulas to understand the dependence among charge to mass ratio, length and diameter ratio were driven by using the physical parameters of similar threatening such as terrier, sparrow. As a result, we confirmed that the dead mass ratio was closed to 20% of warhead mass since the metal case of the proximity threat acts as a simple carrier. This implies that the effective length and diameter of High Explosive Compound is smaller than the length and diameter of warhead, and become a key to understand the large ejection gradient velocity and small spray angle of fragments within 6 degree.

• The Journal of the Korea Contents Association
• /
• v.20 no.5
• /
• pp.467-475
• /
• 2020

As the growth rate of IPTV VOD usage increases it is necessary to analyze VOD usage patterns systematically. This study divides VOD users into free VOD and paid VOD users, then explores how VOD usage motivations, usage patterns, and demographic factors affect the differences between two groups. The results show that social motivation, VOD satisfaction, using content after the holdback expiration, an intention to pay for ad-skip, the proportion of VOD usage, a VOD give-up experience, TV usage time, and SVOD usage time, are statistically significant. Except the VOD satisfaction factor, all of the factors analyzed are more likely to expect paid VOD users. Additionally this study found paid VOD users are more likely to use a SVOD service as an alternative one compared with free VOD users.

• Proceedings of the Korea Concrete Institute Conference
• /
• 2008.11a
• /
• pp.935-940
• /
• 2008

When reinforced concrete is subjected to high temperature as in fire, there is deterioration in its properties of particular importance are loss in compressive strength, cracking and spalling of concrete, destruction of the bond between the cement paste and the aggregates and the gradual deterioration of the hardend cement paste. Assessment of fire-damaged concrete usually starts with visual observation of color change, cracking and spalling of the surface. In this paper, it was reported the trends of research and practical use on the Explosive Spalling Properties and Performance Based of Structural Design of the High-Strength Concrete.

• Trans-
• /
• v.1
• /
• pp.117-139
• /
• 2016

Radio, the first broadcasting medium in history, is also the first mobile medium that meets the currently mobile ecology based on mobile communications network. As a result, it is easily approachable to consumers, can easily engage individual consumers, and its program contents have a huge appealing power to individual listeners, allowing it to form intimacy with audiences at the closest distance. However, the listening rating of radio has decreased greatly because it has experienced various changes by many other competitive media such as TV and internet and it has been influenced by relative constant hypothesis. Also, radio now faces a bigger competition due to the emergence of smartphone. In this circumstance, radio showed movements to evolve into a digital radio that presents improved sound, strengthened reception power, and increased number of channels, but it suddenly changed to DMB and portable multimedia DMB is having huge problems in its marketability due to smartphone. Yet, the listening rating of analogue radio broadcasting that remained unchanged was 13.99% in 2014, an increase by 47% from 2011, and the percentage of listeners under the age of 18 increased by 2.4 times from 2011 to 2014, which was a unique and interesting phenomenon. Accordingly, this paper compared the characteristics of internet and radio that have the traits of daily life, information, individuality, participatory, adventurousness, alternative media, expertise, and sound media. The paper then examined the listening method of radio, in which the direct groundwave antenna reception through a vehicular device is the most common form during the use of transportation means. Finally, it sought to investigate the future of radio based on the understanding of the increase in radio listening ratings, especially by comparing it to the characteristics of smart generation that focus on smartphone and the internet The study results demonstrated that entertainment and amusements are attempting at changes while they used to be obtained selectively by the smart generation from fragmentary information. In addition, radio is expected to become an influential medium in the future through its advantages of 'selected information' and reliability. However, considering such possibilities, radio needs to build the expertise and reliability of broadcasting contents much more at the same time as its digitalization, and it will be able to have its own competitiveness by focusing on various experiences and cultural exposures.

• Journal of Science of Art and Design
• /
• v.11
• /
• pp.109-152
• /
• 2007

This thesis started from accepting the criticism and concretely seeking the possibility of visual visuality, in particular, visual physicality or physical visuality through the expression revealed in painting space. This study aims at stressing the role of the body in visual perception and pictorial expression by it by examining the interaction between it and the body. First of all, this study explored perception and the position of the body in the great frame of the historical stream from modernism, through minimalism, through post-minimalism to later art in order to confirm the interaction between visual perception and the body or the change in the intervention of physicality in the stream of contemporary art, and connected them with a discourse on perception and the body. It raised as the grounds for it the discussions which provided the theoretical background about perception. It dealt with the scientific discussions on perceptual physicality by Gestalt psychology in perceptive psychology, and next the discussion of Rudolf Arnheim who exemplified Gestalt psychology mainly on the dimension of visual art. It is significant in explaining the perceptual activeness which is the same as that of M. Merleau-Ponty as a primary debater to solve the questions of perceptual physicality and physical visuality. M. Merleau-Ponty set forth ambiguous perception and the body as its background as the fundamental bases for perceiving the world rather than consciousness proved explicitly. As Hal Foster said, as minimalist phenomenological background they provided appropriate theoretical background to the late art rising against modernist logic. Next, after the 1970s Frank Stella showed a working method and a tendency entirely different from those in the previous period. For example, deconstruction of frame, decentralized spatial expression, dynamic and mixed expression, and allowing real space by overlapping were judged to swing to approval of perceptual physicality. Francis Bacon's painting structure, that is, figure, triptych, aplat and a method of production by accident were understood to well reflect M. Merleau-Ponty's chair logic of chiasme. This study tries to seek the possibility of pictorial expression from works aiming at defining the question of seeing in connection with physicality, the role of the body as the body accumulated and the linking with a real, daily life as the background of the body, and confirm the phase shift.