• The Journal of the Korea Contents Association
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• v.12 no.6
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• pp.201-210
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• 2012

This study examines the structure of taste repertoires for cultural arts. The major results are as follows: firstly, the numbers of taste repertoires were 1.66 for type 1 and 4.27 for type 2. More specifically, respondents tended to have movie taste. Secondly, there were socio-demographic differences for taste repertoires for cultural arts. In other words. female respondents to have more taste repertoires than that of male respondents. Also, younger respondents to have more taste repertoires than that of older respondent. Thirdly, blog users tended to have more taste repertoires than that of non-users. It can be argued that blog use may be a determinant of the number of taste repertoires for cultural arts. In addition, although the number of taste repertoires type 1 was determined by tastes for theatre, movie, popular music, musical and photo, the number of taste repertoires type 2 was determined by tastes for theatre, movie, musical and classic contents.

• The Research Journal of the Costume Culture
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• v.20 no.2
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• pp.184-194
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• 2012

The purpose of this study is twofold: it suggests appropriate sizes in menswear slim-fit jackets according to brand zones and number of buttons, as well as jacket patternmaking methods according to jacket styles by surveying and comparing the overall present status of patternmaking and production for both men's slim-fit and classic-fit jackets. The researcher conducted interviews with patternmakers of sixteen brands with prepared questionnaires. Data were analyzed by descriptive statistics using SPSS 12.0. The results of this study are as follows: first, for the production ratios of jacket style, the jacket styles' respective proportions differ distinctly according to brand zone. Second, for a jacket with the same number of buttons according to brand zone, the size in character-casual brand zone (character casual can be defined as high quality brands producing designer style clothes) is slightly bigger than the men's formal suit. As the number of buttons increases, there are increases in the chest, waist and hip circumference; on the other hand, the front neck width and the distance from the shoulder neck point to the bottom of the lapel both decrease. Furthermore, the amount of wearing ease in the chest, waist, upper arm circumference, and sleeve curve is less in slim-fit jacket styles than in classic-fit jacket styles. Fusible interfacing alone is used in slim-fit jackets, while sew-in interfacing is used in combination with fusible interfacing in classic-fit jackets. This research concludes that when slim-fit men's jackets are manufactured, appropriate patternmaking and manufacturing methods should be considered.

• Journal of the Korean Society of Costume
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• v.60 no.10
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• pp.16-27
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• 2010

Business Casual has been launched because of 'Friday Wear' in the 1990s and in Korea, the business casual has been settled under the influence of the five-day work week. The idea of business casual is that 'Business' and 'Casual wear' are combined. It is the attire that people should wear the jacket for formality and people can wear both on or off duty. As a result of the analysis, based on this, of the characteristics of men's business casual appeared in Seoul collections from 2009 till now, they can be classified in 'Classic & Traditional business casual', 'Modern business casual', 'Natural business casual', 'Feminine business casual' and 'Sporty business casual'. As a result of the analysis of the design characteristics of the Korean men's business casual and the trend, based on the content of the analysis of Seoul Collection, 'Classical Classic & the Traditional', 'Modern of the Contemporary design', 'Natural of the Natural design' and 'the Sporty business casual of the Separate Coordination' including jeans, have presented themselves. Also, as a result of the analysis of Korean business men's business casual according to the classification of the design characteristics in Chapter III, 'Classic & Traditional business casual' account for the majority and then 'Sporty', 'Modern' and 'Natural business casual' account for the rest in order. 'Feminine business casual' hasn't presented itself. As a result of the comparative analysis of the design characteristics in Chapter III & IV, Korean business men's business casual has been concentrated on 'Classical & Traditional' and the design characteristics have not appeared in variety. There has been no such audacious attempt, and items, the characteristics of coordination, colors and materials are not in variety compared to the collection. Meanwhile, as a result of the subsistent characteristics of Koran business men's business casual, the characteristics of business men's business casual can be said to represent themselves in "Separate Coordination with the previous items of formal suits".

• The Journal of the Acoustical Society of Korea
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• v.22 no.5
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• pp.367-374
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• 2003

In this paper, we propose an audio watermarking method using the attribute of tonal masker. First, the attribute of tonal masker as an audio watermarking attribute is analyzed. According to existing researches, it is possible to be imperceptible modulation for the energies of the frequencies that compose a tonal masker. And when the relation between the tone energy and the left or right frequency energy after various signal processing is compared with the one before the processing, very few changes are showed. We propose an audio watermarking method using these attributes of tonal masker. A watermark bit is embedded by the modulation of the difference between the two neighboring frequency energies of a tone. In the detection, the modulated the tonal masker is searched using the key wed in the embedding without original audio and the embedded watermark bit is detected. After each attack of noise insertion, band-pass filtering, re-sampling, compression, echo transform and equalization, the detection error ratios of the proposed method were average 0.11%, 1.26% for Classics and Pops. And the SDG(Subjective Diff-Grades) scale evaluation of the sound quality of the watermarked audio result in the average SDG -0.31.

• The Research Journal of the Costume Culture
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• v.19 no.1
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• pp.191-199
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• 2011

The purpose of this study was designed to investigate the purchasing considerations given and wearing fit according to suit styles in male consumers in their 30s by conducting questionnarie research with 410 persons. The research intended to give menswear manufacturers the scientific data to improve consumers' satisfaction when menswear brands produce jackets. The summary and conclusions in this study are as follows: First, male consumers have moderate interest in fashion and recognize the impact of fashion on their professional lives. Also, male consumers were aware that recent menswear fashion trends are being changed to slim-fit. Second, by examining the suit inventory and the purchasing consideration according to the suit styles, male consumers in their 30s had between 2 to 4 suits, both in slim-fit and classic-fit, respectively. When consumers purchase a suit, the most important consideration factors are size and wearing fit in both slim-fit and classic-fit. The reason to purchase a slim fit suit is that it seems slim due to its fitted silhouettes, while in a classic-fit suit, it is required because of job nature. Third, the result indicates the circumferences causing the most uncomfortable were the shoulder, chest, the back, and upper arm. Also, they mentioned the chest and the abdominal section including the shoulder as the most uncomfortable circumference to the question on what to be improved in jacket. Therefore, the research suggests that the menswear manufacturer should consider different consumers' desires which require different criteria based on the suit styles.

• Journal of the Institute of Convergence Signal Processing
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• v.10 no.4
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• pp.214-219
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• 2009

This paper proposes a watermarking algorithm considering the frequency characteristics of Haegeum sounds for copyright protection of digital Haegeum sound contents. The harmonics of Haegeum sounds commonly have large magnitude values in 1500Hz~2000Hz and 2800Hz~3500Hz so that those bands are selected to embed a watermark. The proposed method computes the FFT (fast Fourier transform) of the original sound signal and embeds the watermark bits generated by PN (pseudo noise) sequence into the harmonics in the selected bands. Furthermore, the proposed method is robust to lowpass filter, bandpass filter, cropping, noise addition, MP3 compression attacks and the maximum BER (bit error rate) is 1.41% after lowpass filter attack. To measure the quality of the watermarked sound, subjective listening test, MUSHRA (multiple stimuli with hidden reference and anchor), was conducted. The mean value of MUSHRA listening test is bigger than 98 and 96.67 for every Haegeum sounds and Korean classical music with Haeguem, respectively.

• Tunnel and Underground Space
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• v.26 no.3
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• pp.143-153
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• 2016

This study analyzed the features and various applications of Bluetooth beacon technology for utilization in the mining and construction industries. Through a literature survey, the concept and version-specific features of Bluetooth were reviewed, and representative types of the Bluetooth beacon-based service and its real-world applications in other fields were analyzed. Although a few previous studies that used the Bluetooth Classic (the old version of Bluetooth technology) in the mining industry have been reported, no mine site could be found where the Bluetooth beacon technology was utilized. In the construction industry, this study could find a site where the Bluetooth beacon technology was used to improve the haulage works of construction raw materials. Since the Bluetooth beacon technology has low power consumption and is easy to integrate with smartphones, it will be effectively utilized to improve the productivity and safety in the mining and construction industries.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.3
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• pp.533-544
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• 2021

Using Shor algorithm, factoring and discrete logarithm problem can be solved effectively. The public key cryptography, such as RSA and ECC, based on factoring and discrete logarithm problem can be broken in polynomial time using Shor algorithm. NIST has been conducting a PQC(Post Quantum Cryptography) standardization process to select quantum-resistant public key cryptography. The multivariate quadratic based signature scheme, which is one of the PQC candidates, is suitable for IoT devices with limited resources due to its short signature and fast sign and verify process. We analyzes classic attacks and quantum attacks for Rainbow which is the only multivatiate quadratic based signature scheme to be finalized up to the round 3. Also we compute the attack complexity for the round 3 Rainbow parameters, and analyzes the security level of Rainbow, one of the PQC standardization candidates.

• The Journal of the Korea Contents Association
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• v.22 no.6
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• pp.78-91
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• 2022

The importance of emotional intelligence education in the development of children's augmented reality education content is overlooked. Therefore, in-depth research is needed to develop children's emotional intelligence. This study was conducted through theoretical consideration and case analysis. The proposal of this paper is that the augmented reality type for children aged 2 to 7 is suitable for indoor activities with marking recognition technology. To promote an understanding of emotions, a large screen is selected, and emoticon dolls or emoticon books are recommended for learning content. Children aged 7 to 11 are suitable for indoor activities of non-marker recognition technology, and can induce emotional control and emotional recognition through active manipulation. For the learning content, "3D art teaching content" and "Online Classic Musical" are recommended. Children after the age of 11 are suitable for non-marker recognition technology outdoor activities and improve each element of emotional intelligence through interaction with nature and society. For the learning content, 'Forest Play Activity through Art' and 'EQ Theater Play' are recommended. Through this paper, we intend to promote the development of children's augmented reality emotional intelligence education.

• The Korean Journal of Food And Nutrition
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• v.36 no.6
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• pp.526-534
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• 2023

To improve usability of super sweet corn, extracts were prepared with hydrolytic enzyme and changes in physicochemical and antioxidant properties were analyzed. Soluble solids and reducing sugars contents were higher in all enzyme treatment groups than in the control. When enzyme treatment time increased, contents of soluble solids and reducing sugars were also increased. There was no significant difference in lightness between treatment groups, with redness showing the highest value in the control and yellowness showing the highest value in the invertase treatment group. Free sugar content in the control was the lowest. However free sugar content in the enzyme combination treatment group was increased by more than four times compared to that in the control. Contents of ascorbic acid, flavonoids and polyphenols were higher in the enzyme treatment group than in the control. In particular, the enzyme combination treatment group showed the highest content. DPPH and ABTS radical scavenging abilities were significantly higher in all enzyme treatment groups than in the control. Radical scavenging abilities of cellulase treatment group and enzyme combination treatment group showed high activity. The activity increased when enzyme treatment time increased. The combined enzyme treatment method for super sweet corn was suitable for food processing.