• Journal of the Korea Society of Computer and Information
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• v.14 no.9
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• pp.21-28
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• 2009

Color polarity classification is a process to determine whether the color of text is bright or dark and it is prerequisite task for text extraction. In this paper we propose a color polarity method to extract text region. Based on the observation for the text and background regions, the proposed method uses the ratios of sizes and standard deviations of bright and dark regions. At first, we employ Otsu's method for binarization for gray scale input region. The two largest segments among the bright and the dark regions are selected and the ratio of their sizes is defined as the first measure for color polarity classification. Again, we select the segments that have the smallest standard deviation of the distance from the center among two groups of regions and evaluate the ratio of their standard deviation as the second measure. We use these two ratio features to determine the text color polarity. The proposed method robustly classify color polarity of the text. which has shown by experimental result for the various font and size.

• Proceedings of the KSLP Conference
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• 1997.11a
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• pp.253-253
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• 1997

비폐색이 있는 경우 음성이 변하는 것을 쉽게 느낄 수 있지만, 비폐색 때의 음향학적인 특성에 대하여 알려진 바를 찾기는 쉽지 않다. 저자들은 인위적으로 비폐색을 유발하여 비폐색 부위에 따른 비강자음의 음향학적 변화특성을 파악하고 비음도의 변화 정도를 비교하고자 하였다. 정상비음도를 보이는 성인남녀 각 10명을 대상으로, 2ml의 부피를 갖도록 수술용장갑에 Merocel$^{\circledR}$을 넣은 뒤, 이를 이용하여 ostiomeatal unit(OMU)을 중심으로 전후상하 4부위의 인위적인 비폐색을 유발하여, 비폐색 전과 후의 부위에 빠른 차이틀 비교하였다. /나나/의 발성을 각 조건에서 3회 실시하여, 모음중간의 /ㄴ/중 (CVCV) 안정된 spectorgram소견을 보이는 부위를 선택하여, 해당구간의 제1, 제2, 제3 음형대와 각각의 bandwidth 평균값을 남녀별로 비교하였고, 표준비음비율이 알려진 rabbit, baby, mama 문장을 이용하여 비음비율을 비교하였다. 남녀모두 비폐색전에 비하여 OMU의 앞쪽부위를 막은 경우에 제1음형대가 가장 뚜렷하게 감소되었으며, 비음비율의 유의한 감소를 보였다. 비폐색이 있는 경우, 비강자음 /ㄴ/은 제1음형대를 중심으로 주요변화가 일어남을 알 수 있었으며, 비폐색 부위에 따라 비음비율이나 제1음형대 감소의 정도가 다름을 알 수 있었다.

• Clean Technology
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• v.12 no.4
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• pp.238-243
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• 2006

The aggregate properties of chilled converter slag reformed by atomizing liquid converter slag were investigated. The properties of mortars with various replacement of standard sand by chilled converter slag as recycled fine aggregates were investigated. The particle shape of chilled converter slag by atomizing was a sphere with an open cavity which is enclosed with two layers like a bored coconut. Specific gravity, unit weight and fineness modulus increased with increasing the replacement, and solid content had the maximum at the replacement of 75% and water absorption rate had the minimum at the replacement. The hardened mortars with higher replacements have the higher specific gravity and the denser texture.

• Proceedings of the KSLP Conference
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• 1997.11a
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• pp.259-259
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• 1997

폐쇄성 수면무호흡의 치료를 목적으로 한 구개수구개인두성형술 이후의 음성변화 유무를 파악하여, 성악가 등의 전문적인 음성사용자에게 상기한 수술을 결정함에 있어서 가능한 guideline을 제시하여 보고자 하였다. 수면다원검사상 폐쇄성 수면무호흡증으로 진단된 성인남자 20명을 대상으로 수술전후의 음성변화에 대한 설문조사를 하였고, 수술전, 수술후 1개월에 각각 /아/, /이/, /우/ 모음의 제1, 2, 3 음향대를 비교하였으며, 표준 비음비율이 각기 다른 세가지 문장을 이용하여 수술전후의 비음비율의 변화를 측정하였다. 환자 자신은 수술전후의 음성이나 음색의 변화를 느낄 수 없었고, 비음비율의 변화나 모음의 음형대에 대부분은 변화가 없었지만, /우/ 음의 제3음형대 특성에 변화가 있음을 관찰하였고, 구인두가 중요한 역할을 담당할 수 있는 특정언어의 일부 발음이나 vibrato, singer's formant등의 변화유무에 대한 연구가 없는 점을 감안한다면, 성악가를 비롯한 전문적 음성사용자에？서는 구개수 구개인두성형수술을 결정함에 있어 신중을 기하여야 할 것으로 사료되었다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.11a
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• pp.409-412
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• 2006

펀드의 성과 평가는 펀드선택 의사결정시 가장 중요한 고려요인이다. 전통적인 펀드 성과평과 지표인 샤프비율이나 트레이너 비율은 운용비용과 거래비용 등과 같은 다양한 요소들을 반영하지 못하고 있다. 펀드의 여러 수익과 비용요인들을 반영하기 위해, 본 연구에서는 DEA를 이용하여 펀드의 상대적인 효율성을 측정하였다. 분석자료는 2005년 12월 31일까지 국내에 존재하는 3년 이상 운용된 67개의 장기펀드를 대상으로 분석하였다. 입력변수는 비용과 관련된 총 보수율, 월수익률의 표준편차, 펀드 규모를 나타내기 위한 평균설정좌수를 이용하였고 출력변수는 이익과 관련된 예상 월평균수익률과 시장포트폴리오의 월수익률을 상회한 기간의 비율을 사용하였다. 본 연구결과, DEA를 통해 수익률만으로는 평가할 수 없는 펀드의 운용능력을 평가할 수 있었다.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.13 no.2
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• pp.5-7
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• 1977

The sand-eel Ammodytes persona/us GIRARD, one of the important fish species in commercial fishing, is found abundantly around the coast of Korea. The author determined the morphological index of the fish after spawning. The samples were caught by the set-net at Jllmllnjin, located ['I Ihe east coast of Korea. 1. The relation between the total length L and the body weight W is represented as $$ W=O. 00l0114L^{2.7281024} $$ 2 Vertebrae number is represented as 64.597 \ulcorner 1.307

• Nuclear industry
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• v.7 no.10 s.56
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• pp.14-22
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• 1987

서독의 원자력발전은 기간이 거의 동일한 세 단계로 구분할 수 있다. 1단계동안에 경수로가 여러가지 원자로중에서 가장 경쟁력이 있는 것으로 부상했다. 2단계 초기에는 발전소 규모가 오늘날의 원자력발전소 용량의 가장 큰 비율을 차치하는 표준인 1,300MW급으로 증가되었으며, 3단계 기간중에 원자력 기기와 사업시행에 대한 안전요건이 확립되었다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.9
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• pp.1097-1105
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• 2017

This study examined how much chicken meat was in sausage made with pork. Both real-time polymerase chain reaction (PCR) and internal standard addition were used. Fifty ng of chicken DNA was added to the sausages as an internal standard. The addition of standard DNA increased the amplification efficiency of PCR and confirmed the possibility of quantitative analysis. A QIAamp DNA Micro Kit was used to improve the DNA recovery and amplification efficiency. The density of template DNA and primer were suitable for $3.0{\sim}5.0{\mu}L$ and $0.5{\mu}L$, respectively. Each DNA of pig and chicken was diluted in 10-fold from steps 50 ng to 0.05 ng. The detection limit of both pig and chicken meat was more than 0.05 ng and the correlation coefficient of the standard curve was at least 0.98. The result of the quantitative analysis after heat treatment of 3 samples of pigs and chickens mixed at 70:30 showed a 5.7% difference (64.3:35.7) between the expected value and measured value. The quantitative value was changed by affecting the DNA according to the heat treatment ($70^{\circ}C$, 10 min). An analysis of the pork and chicken content in sausages showed that it was difficult to detect chicken meat and the quantitative value of DNA according to the Ct value was very low. On the other hand, when adding standard material (50 ng of chicken DNA) to the sausages, the Ct value decreased gradually with increasing chicken mixing ratio. Thus, the mixing ratio of chicken in sausages could be estimated.

• Explosives and Blasting
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• v.23 no.1
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• pp.19-30
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• 2005

In this study, the standard particle velocity equations and the equation for calculating specific charge weight with application of rock fracture method using the finecker plus are suggested and the existing equation of fragmentation was transformed into one applicable to finecker plus. Standard rock fracture pattern was designed. Square root scaled equation is $V=345.39(D/\sqrt{W})^{-1.4484$. computable equation to specific charge wei인t is $W_f=(2.3\~2.5)\;f_agdV$, charge weight per hole is 0.54kg, and proportion of diameter 30cm fragmentation is about $48.7\%$. This rock fracture method nay him out to be more excellent than the other methods.

• Korean Journal of Poultry Science
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• v.36 no.1
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• pp.1-7
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• 2009

This study was performed to evaluate the effect of the level of stocking density of housing with or without window on chicken meat quality. The incidence of $1^+$ grade of whole chicken housed with window significantly influenced by stocking density. The incidence of $1^+$ grade chicken at high stocking density ($0.050\;m^2$/head), standard stocking density ($0.066\;m^2$/head), and low stocking density ($0.083\;m^2$/head) was 26, 52, and 66%, respectively. Breast muscle of chicken housed with window and with low stocking density showed higher incidence of $1^+$ grade than high stocking density. Also minor and severe PSE (pale, soft, extractive) incidence of chicken meat were showed 4% each, while the $1^+$ grade chicken was not appeared at low density. In chicken thigh, the incidence rate was not affected by stocking density. In chicken housed without window, the incidence of $1^+$ grade chicken in high, standard, and low stocking density was 18, 8, and 46%, respectively. Also, the incidence of $1^+$ grade chicken breast was 2.6 times higher than the chicken in low stocking density. However, incidence of $1^+$ grade thigh was not affected by the stocking density. These results suggest that high stocking density significantly reduced the incidence of $1^+$ grade chicken meat regardless of housing with or without window.