• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.1C
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• pp.15-20
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• 2009

For perpendicular magnetic recording (PMR) channels, noise-predictive maximum likelihood (NPML) detection method has been used. But, it is hard to expect improving the performance when the bit density is increased. Hence, we exploit the coding methods which has good performance. In this paper, we show the performance of the recursive systematic convolutional (RSC) codes with turbo-equalization method with different channel bit densities. The noise model is 80% jitter noise and 20% AWGN.

• KIISE Transactions on Computing Practices
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• v.22 no.8
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• pp.381-386
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• 2016

Recently full-duplex communication in wireless networks is enabled by the advancement of self-interference cancellation technology. Full-duplex radio is a promising technology for next-generation wireless local area networks (WLAN) because it can simultaneously transmit and receive signals within the same frequency band. Since legacy medium access control (MAC) protocols are designed based on half-duplex communication, they are not suitable for full-duplex communication. In this paper, we discuss considerations of full-duplex communication and propose a novel full-duplex MAC protocol. We conducted a simulation to measure the throughput of our MAC protocol. Through the simulation results, we can verify that significant throughput gains of the proposed full-duplex MAC protocol, thus comparing the basic full-duplex MAC protocol.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.473-475
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• 2022

In this paper, as children's smartphone penetration and usage time increase, the need for educational application development is increasing.Therefore, in this paper, we propose an idea for the development of an application service that is optimized for children and designed to be easily used by children by applying image recognition technology. Using image recognition technology, we propose a service that helps children easily take pictures of objects with their smartphone's camera and easily identify appropriate search results for them. Through this, even in an environment where it is difficult to receive direct guidance from a teacher due to online classes, children can easily study on their own initiative or find a subject they want to learn more about and learn.

• Journal of Practical Engineering Education
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• v.15 no.2
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• pp.373-379
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• 2023

With the 4th Industrial Revolution, VR/AR technology is developing, and since COVID-19, the use of VR/AR technology is increasing and is being used in various environments. In particular, AR technology can be used in various educational fields and the perception of VR in the educational field and learning satisfaction, problem-solving ability, and self-directed learning ability when using VR were analyzed. It was analyzed that perception of VR and learning satisfaction had a significant correlation at the significance level of 0.001, and problem-solving competency had a significant correlation between learning satisfaction and self-directed learning ability at the significance level of 0.05.

• Journal of Advanced Technology Convergence
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• v.2 no.4
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• pp.31-36
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• 2023

The purpose of this study is to provide basic data for developing strategies to maintain a stable and happy middle-aged and mature years. We want a happy life during middle and old age. However, most middle-aged and older adults are a continuous process of self-regulation, learning stress coping skills to maintain balance and integration throughout their lives, control their emotions, and effectively regulate their living environments. To effectively cope with the crises experienced in middle and old age, to discover and pursue one's own unique meaning in life, and to enjoy a stable and vibrant middle and old age without experiencing difficulties between happiness and unhappiness, we continuously learn the core of the meaning of life. The purpose of this study is to present data.

• 한국벤처창업학회:학술대회논문집
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• 2024.04a
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• pp.125-133
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• 2024

최근 국내에서는 인구감소에 따른 일부 지역소멸이 화두가 되고 있다. 대부분이 농촌지역으로 여러 가지 원인이 있으나, 원인 중의 하나로 농업경영체의 성과 미흡에 따른 소득향상의 어려움이 있기 때문이다. 이를 극복하기 위해 정부와 지자체에서는 다양한 정책을 수립하여 지속해서 지원하고 있지만 큰 성과를 내지 못하고 오히려 농엉경영체의 요구사항만 많아지고 있다. 본 연구의 목적은 경영자역량이 기업성과에 미치는 영향관계를 살펴보고 경영자역량과 기업성과 간에 있어 시장지향성이 매개역할을 하는지에 대해 분석하는데 있다. 본 연구에서는 농업경영체의 경영자역량을 독립면수로 하여 히위변수에 창의적역량, 네트워킹역량, 자기통제역량, 기술적역량을 선정하고 종속변수에는 기업성과를 매개변수로 시장지향성을 선정하고 연구를 진행하였다. 따라서 본 연구는 농업경영체의 경영자역량이 기업성과에 영향을 미칠 수 있고 시장지향성이 매개효과가 있을 것이라는 인과적 경로를 검증하고자 한다. 세계적인 불확실한 경제환경과 빠르게 변화되고 있는 국내 산업의 구조변화는 농업경영체들이 적응함에 있어 어려움이 존재하고 있는 상황에서 농촌에서 기업활동을 하고 있는 농업경영체 경영자역량의 주요 요인들을 설정하여 연구를 진행하였고 경영자들이 기업성과를 달성함에 있어 도움이 될 것이다.

• Economic and Environmental Geology
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• v.46 no.3
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• pp.207-214
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• 2013

To identify rock-magnetic properties of volcanogenic hydrothermal sulfide deposits, chimneys were obtained from the Tofua Arc in Southwest Pacific, using a remotely operated vehicle (ROV) and Grab with AV cameras (GTVs). Three different types of chimneys used in this study are a high-temperature chimney with venting fluid-temperature of about $200^{\circ}C$ (ROV01), a low-temperature chimney of about $80^{\circ}C$ (GTV01), and an inactive chimney (ROV02). Magnetic properties of ROV01 are dominated by pyrrhotite, except for the outermost that experienced severe oxidation. Concentration and grain-size of ROV01 pyrrhotite are relatively low and fine. For GTV01, both magnetic concentration and grain-size increase from interior to margin. Pyrrhotite, dominant in the core, becomes mixed with hematite in the rim of the chimney due to secondary oxidation. High concentration and large grain-size of magnetic minerals characterize the ROV02. Dominant magnetic phases are pyrrhotite, hematite and goethite. In particular, the outermost rim shows a presence of magnetite produced by magnetotactic bacterial activity. Such distinctive contrast in magnetic concentration, grain-size and mineralogy among three different types of chimney enables the rock-magnetic study to characterize an evolution of hydrothermal deposits.

• Journal of Korean Home Economics Education Association
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• v.25 no.2
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• pp.21-47
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• 2013

The purpose of this study is to examine the previous literature in home economics and contents and achievement standards of 2009 revised curruculum in relation to character education. To achieve this purpose 1) the literature review in human development and family, self-management and consumption life, food, clothing, and housing life area is critically discussed in relation to character education, and 2) curriculum contents and achievement standards are analysed in relation to the six pillars(trustworthiness, respect, responsibility, fairness, caring, and citizenship) of character education proposed by Josephson Institute. The results of analysis are verified by five experts in home economics content areas. Specific results of relation between home economics contents/achievement standards and six elements of character education are as follows. Human development and family area is most closely related with all elements of character education among other content areas. In Self-management and consumption life areas, self-management sub-area is very closely related with responsibility element; and consumption life sub-area is very closely related with citizenship element. In food area, health diet and eating sub-area is very closely related with trustworthiness, respect, and responsibility elements; and eco-frendly diet and food sub-area is very closely related with all six elements. In clothing area, clothing and self-expression sub-area is very closely related with trustworthiness, caring, and citizenship elements; and eco-friendly clothing and clothing reform sub-area is very closely related with responsibility, caring, and citizenship elements. In hosing area, housing and living environment sub-area is very closely related with responsibility and caring elements; and sustainable living and decorating living space sub-area is very closed related with trustworthiness, fairness, and citizenship elements.

• 기호학연구
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• no.57
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• pp.211-255
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• 2018

This paper attempts to "re-read" the webtoon Misaeng, which was once an important issue in the field of public discourse on "labor". Our hypothesis was that the dual actactial structure of Misaeng's hero Jang Geurae gave a dual structure to the entire text, which leads to the discovery of text meaning that was not mentioned in the existing discourse. This is based on the concept of 'meta-story character', which Hiroki Azuma talked in his postmodern literary theory. To verify this hypothesis we analyzed the text by applying the Parisian semiotics, more specifically J. Fontanille's theory. Jang Geurae is observed to be a actant of dual structure divided into 'character' of the enunciated level and 'player' of the enunciation level. Considering this characteristic of the hero, Misaeng can be interpreted as a metafiction that shows the 'shifting' between the subject of the enunciated level and the subject of the enunciation level. On the level of 'character' Jang's existence mode turns out to be "Deficiency (actualized)", but on the level of 'player' Jang 's existence mode turns out to be "Inanity(potentiallized)." His somatic responses also show a duality, which is represented by Fontanille's corps-actant model, where on the level of 'character' the somatic actant of Jang consists of 'Moi-chair(ego-flesh)' and 'Soi-idem(self-idem)', and on the level of 'player' it consists of 'Moi-chair(ego-flesh)' and 'Soi-ipse(self-ipse)'. The former mainly acts as a 'role' and takes charge of exteroceptive perception, while the latter mainly acts as 'attitude' and takes charge of interoceptive perception. Because of this dissociative nature of actant, Jang's two 'self' draw the re-adjustment of values without serious conflict between the collective norms and the individual identity. This is in sharp contrast with other characters who struggle with the conflict between the environment and "self". It becomes customary to adopt norms that are suspected to ineffective, but if you raise questions, the normative system can be updated. On one axis of Misaeng there are characters who have lost themselves in customs. On the other axis, there is Jang who can not help dismantling the existing ineffective norms and updating the normative system. Jang's existence mode seems to be one of many possible modes generated by this era where people share no longer solid community values, His actantial structure also communicates with readers of these days who put themselves more in subject of enunciation level than of enunciated level.

• Archives of design research
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• v.20
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• pp.41-48
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• 1997

We easily witness that environmental issue is very critical point to affluence upon a restructuring the value system of human being. Therefore it is obvious that this issue affluence upon the field of design as well. The most important feature of environmental issue is 'wholeness' in itself. It means that we have to approach and to solve it as a whole. Also, design is to be done at the same way. The creative professionalism of design could provide a clue to solve the problem, but designer are tend to seek a solution in a just partial way such as recycling and packaging. But those attitude may cause more problems and spread it futhermore. Therefore this study is analysis some recognitive turning factors in order to solve the problems as a whole, and to suggest a appropriate methods according to such a view point. Even internal retrospect in design itself or external demand from the other, If we look away this issue, the real purpose of design, contributing for society, should be diluted by ourselves.