• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.49-52
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• 2019

Braille guide block of sidewalk is an essential facility for independent walking of the blind. The blind walks while checking the braile guide blocks with white cane and sense of sole. When they leave the braile area, they face difficulties until they find the braile guide blocks again. In this paper, we propose an algorithm that guides the walking of the blind by determining whether they follows the braille guide blocks safely. For this purpose, the slope of the braille block is selected as a feature and a 3-line detector is introduced. Also the slopes are stabilized using spatial filtering to deal with breaks or junctions of the braille block during the progress and temporal filtering to cope with ego-motion of the blind. Through simulations using a dataset obtained from the real sidewalks and indoors, it can be shown that the proposed algorithm can successfully estimate the walking direction and determine whether the blind is out of the braille guide block area.

• Journal of Convergence for Information Technology
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• v.9 no.10
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• pp.264-271
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• 2019

Currently, teenagers value the beauty of appearance due to the proximity of the media. Therefore, acne on the skin is not a serious disease, but if it is managed incorrectly, it will leave scars and marks on the face, which leads to students' depression, stress and loss of confidence. Therefore, this study analyzed how acne skin afects adolescent's stress, depression and self-esteem and recognized that acne is not a simple skin disease but is closely related to mental health. And three hypotheses were established to be more effective in managing acne skin and to be used as basic data for skin care. As a result, it was found that acne development of junior high school students had an actual effect on stress and depression. Acne skin care is considered to be necessary for mental health, not superficial management.

• Journal of Convergence for Information Technology
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• v.10 no.12
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• pp.166-174
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• 2020

Cosmetic functional ingredients are products of emotional convergence technology. Unlike pharmaceuticals, it is very important that cosmetics ingredients contain emotional attractiveness because they are household products that have limitations in their effectiveness. Ginseng has long been used as a major prescription of oriental medicine for human health. Detailed records such as the origin and propagation of ginseng can lead to various cosmetical application of ginseng as an emotional convergence ingredients that utilizes the authenticity and excellence of ginseng as an asset of K-beauty. In the unfortunate reality that the first records of ginseng use depend on ancient Chinese literature, it is very meaningful to describe and leave the records of ginseng used in the field of beauty. This study examined the general historical records needed for the study of the cosmetics application of ginseng and the recent findings of ginsenoside in the area of skin function, and provided basic data that can be applied to new cosmetics development research.

• Journal of Positioning, Navigation, and Timing
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• v.11 no.4
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• pp.305-316
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• 2022

Numerous research revealed a strong association between the ionospheric perturbations and various natural hazards. The ionospheric measurements from Global Navigation Satellite System (GNSS) observations provide the state of electron contents in the ionosphere that contributes to investigate the source events. In this study, two geophysical events occurred on 23 January 2018, the 7.9 Mw earthquake in Alaska and Kusatsu-Shiranesan volcanic eruption in Japan, are examined to characterize the fingerprint of each event in the ionosphere. Firstly, we extracted the Total Electron Content (TEC) from GNSS measurements, then isolated disturbed wave signatures from the TEC measurements that is referred to as a traveling ionospheric disturbance (TID). As TIDs are short-term ionospheric variations, the major trend of GNSS TEC measurements should be properly removed. We applied a natural neighbor interpolation method together with a leave-one-out cross validation technique for detrending. After detrending the TEC, the remaining signals are further enhanced by applying a band-pass filter and TIDs are detected from them. Finally, the detected TIDs are verified as the response of the ionosphere to Kusatsu-Shiranesan volcanic eruption and Gulf of Alaska earthquake which propagated through the ionosphere with an average velocity of 530 m/s and 724 m/s, respectively. In addition, a coherence analysis is conducted to discriminate between the signatures from a volcanic explosion and an earthquake. The analysis reveals the TID waveforms from each single event are highly correlated, while a low correlation is found between the TIDs from the earthquake and explosion. This study supports the claim that different geophysical events induce the distinctive characteristics of TIDs that are detectable by the ionospheric measurements of GNSS.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.7
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• pp.842-848
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• 2020

Music markets have entered the era of streaming. In order to select and propose music that suits the taste of music consumers, there is an active demand and research on an automatic music genre classification system. We propose a method to improve the accuracy of genre unclassified songs, which was a lack of the previous system, by using a generative adversarial network (GAN) to further develop the automatic voting system for deep learning music genre using Softmax proposed in the previous paper. In the previous study, if the spectrogram of the song was ambiguous to grasp the genre of the song, it was forced to leave it as an unclassified song. In this paper, we proposed a system that increases the accuracy of genre classification of unclassified songs by converting the spectrogram of unclassified songs into an easy-to-read spectrogram using GAN. And the result of the experiment was able to derive an excellent result compared to the existing method.

• Journal of Advanced Navigation Technology
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• v.22 no.2
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• pp.173-178
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• 2018

In May 2015, the first case of Middle East Respiratory Syndrome occurred, leaving 186 patients, 38 deaths, and 16,693 quarantine patients. The government has carried out a monitoring of people in contact with the confirmed or suspected patients to prevent the spread of MERS infection. The management staff conducted monitoring of the quarantine subject twice a day during the 14-day period, to check compliance with isolation. However, as the number of people subject to isolation was increased explosively, such issues as the occurrence of residents occurred due to limitations of management personnel. Managers have also admitted that their home quarantine rules have become nominal when they checked the status of quarantine subject by using a call only two or three times a day, and that it is virtually impossible to control when the departees leave without permission. In this paper, home quarantine equipments and their means of authentication are proposed and verified. As a result of the verification, the proposed methods in this paper are expected to be used later as their own authentication method for home quarantine equipments.

• Journal of Veterinary Science
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• v.19 no.6
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• pp.750-758
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• 2018

Influenza virus infection is a zoonosis that has great socioeconomic effects worldwide. Influenza infection induces respiratory symptoms, while the influenza virus can infect brain and leave central nervous system sequelae. As children are more vulnerable to infection, they are at risk of long-term neurological effects once their brains are infected. We previously demonstrated that functional changes in hippocampal neurons were observed in mice recovered from neonatal influenza infection. In this study, we investigated changes in myelination properties that could affect neural dysfunction. Mice were infected with the influenza virus on postnatal day 5. Tissues were harvested from recovered mice 21-days post-infection. The expression levels for myelin basic protein (MBP) were determined, and immunohistochemical staining and transmission electron microscopy were performed. Real-time polymerase chain reaction and Western blot analyses showed that mRNA and protein expressions increased in the hippocampus and cerebellum of recovered mice. Increased MBP-staining signal was observed in the recovered mouse brain. By calculating the relative thickness of myelin sheath in relation to nerve fiber diameter (G-ratio) from electron photomicrographs, an increased G-ratio was observed in both the hippocampus and cerebellum of recovered mice. Influenza infection in oligodendrocyte-enriched primary brain cell cultures showed that proinflammatory cytokines may induce MBP upregulation. These results suggested that increased MBP expression could be a compensatory change related to hypomyelination, which may underlie neural dysfunction in recovered mice. In summary, the present results demonstrate that influenza infection during the neonatal period affects myelination and further induces functional changes in influenza-recovered mouse brain.

• The Journal of Korean Philosophical History
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• no.23
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• pp.245-273
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• 2008

Choi Je Woo was stressed superiority of god and it was immanence. IT was religion human theory. Choi See Hyung and Son Byung Hee writed change from god to the heaven. It was stressed superiority of god better than immanence of heaven. Choi Je Woo of human must attend god changed Choi See Hyung and Son Byung Hee of human being god. Choi See Hyung and Son Byung Hee was stressed the subject. Choi Je Woo was stressed superiority of god speciality. Choi See Hyung and Son Byung Hee was not disappeared absolutely. Son Byung Hee of human being god disappeared absolutely because it leave only immanence of god by Yi Don Hwa.

• (The)Study of the Eastern Classic
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• no.49
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• pp.261-295
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• 2012

In the past, 'Samcheong-Dong'(三淸洞) was the most beautiful place in Seoul. So this place appealed to everyone. Regardless of their position, people of all age and both sexes wanted to go Samcheong-Dong. And in Samcheong-Dong, the temple of Taoism(道敎) that named Sokeokseou(昭格署) hold ritual to Heaven. Many poets wrote poem about this temple. As a result, Samcheong-Dong has the aura of the sacred mood. Because of the breathtaking landscapes, many people meet in Samcheong-Dong, and hold the poetry club. Not only the upper ten, but also the middle class people composed poems and published many books of poem. The image of Samcheng-Dong that our contemporaries must remember is the next three distinctive qualities. In the first, the Korean unique temple of Taoism was located in Samcheong-Dong. Secondly, the house of royal family and the upper ten was adjacent to Samcheong-Dong, so this place has the aura of high culture. Thirdly, many poem was created in Samcheong-Dong, so this place leave a masterpiece of middle class that will go down in literary history.

• Journal of English Language & Literature
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• v.60 no.2
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• pp.315-338
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• 2014

In The Great Hunger (1942) Patrick Kavanagh opens an Irish postnationalist discourse. Taking advantage of historical revisionism and postcolonialism, he not only demystifies a romantic nationalist ideology rooted in rural Ireland but also searches for an autonomous literary tradition free of the Irish Literary Revival, supposedly an outcome of a colonial influence. As a farmer-poet, Kavanagh deconstructs in two ways myths of rural areas, to which the Revivalists aspire. Contrary to Revivalism, he reveals that rural Ireland is not an idealized place where national identity arises and individual spirits are restored. It is instead a cruel place where farmer Maguire, deprived of health, wealth, and love, is tortured by hard labor in the field, moral regulations imposed by the Church, and his mother's domestic authority, all of which leave him unmarried until age sixty-five. Kavanagh also challenges the Revivalist tradition, led by W. B. Yeats commonly referred to as the poet of the nation, by indicting its reliance on former colonial authority and its lack of a sense of communal autonomy, both of which are diagnosed as "provincialism" by Kavanagh. Given that modern Irish literature has been strongly colored as nationalistic during the course of anticolonial resistance, Kavanagh's critique of the Revival in The Great Hunger, whose proponents blindly beautify the lives of farmers, runs directly against the grain of the founding ideology of the Irish nation-state. His voice, like that of a whistle-blower, disclosing the harsh realities of rural Ireland, ushers in a "post"-nationalist perspective on nation and national myths in Irish poetics.