• Title/Summary/Keyword: extracting methods

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Evaluation of Reverse Hybridization Assay for Detecting Fluoroquinolone and Kanamycin Resistance in Multidrug-Resistance Mycobacterium tuberculosis Clinical Isolates (다제내성결핵 균주에서 Reverse Hybridization Assay를 이용한 Fluoroquinolone, Kanamycin 신속 내성 검사의 유용성)

  • Park, Chin-Su;Sung, Nack-Moon;Hwang, Soo-Hee;Jeon, Jae-Hyun;Won, Young-Sub;Min, Jin-Hong;Kim, Cheon-Tae;Kang, Hyung-Seok
    • Tuberculosis and Respiratory Diseases
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    • v.72 no.1
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    • pp.44-49
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    • 2012
  • Background: Multidrug-resistant tuberculosis (MDR-TB) is an increasing public health problem and poses a serious threat to global TB control. Fluoroquinolone (FQ) and aminoglycoside (AG) are essential anti-TB drugs for MDR-TB treatment. REBA MTB-FQ$^{(R)}$ and REBA MTB-KM$^{(R)}$ (M&D, Wonju, Korea) were evaluated for rapid detection of FQ and kanamycin (KM) resistance in MDR-TB clinical isolates. Methods: M. tuberculosis (n=67) were isolated and cultured from the sputum samples of MDR-TB patients for extracting DNA of the bacilli. Mutations in genes, gyrA and rrs, that have been known to be associated with resistance to FQ and KM were analyzed using both REBA MTB-FQ$^{(R)}$ and REBA MTB-KM$^{(R)}$, respectively. The isolates were also utilized for a conventional phenotypic drug susceptibility test (DST) as the gold standard of FQ and KM resistance. The molecular and phenotypic DST results were compared. Results: Sensitivity and specificity of REBA MTB-FQ$^{(R)}$ were 77 and 100%, respectively. Positive predictive value and negative predictive value of the assay were 100 and 95%, respectively, for FQ resistance. Sensitivity, specificity, positive predictive value and negative predictive value of REBA MTB-KM$^{(R)}$ for detecting KM resistance were 66%, 94%, 70%, and 95%, respectively. Conclusion: REBA MTB-FQ$^{(R)}$ and REBA MTB-KM$^{(R)}$ evaluated in this study showed excellent specificities as 100 and 94%, respectively. However, sensitivities of the assays were low. It is essential to increase sensitivity of the rapid drug resistance assays for appropriate MDR-TB treatment, suggesting further investigation to detect new or other mutation sites of the associated genes in M. tuberculosis is required.

A Study on the Recognition of Population Problems of Male and Female Students using Text-mining: To Drive the Implications of Population Education (텍스트마이닝기법을 활용한 남녀 학생의 인구문제에 관한 인식 분석: 인구교육의 시사점 도출을 위하여)

  • Wang, Seok-Soon;Shim, Joon-Young
    • Journal of Korean Home Economics Education Association
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    • v.31 no.3
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    • pp.73-90
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    • 2019
  • The purpose of this study was to explore the differences in perceptions of male and female students about population problems and to draw up implications for population education. Using text mining, the report about population problem, which had written by students in population education class, were analysed. After extracting key words, semantic networks were visualized. The results were as follows. First, the high frequency words were the same for each gender. Second, key words based on frequency did not differ depending on gender. And the key words extracted by the correlation analysis and bigram were different. That is, in the semantic network of girls' words, the network of "life"-"marriage"-"birth"-"pregnancy" appeared independently, distinguishing it from male students who showed separate objective links to population problems. Therefore, it drew suggestions that male and female students should be viewed as heterogeneous groups with different cognitive structures on population problems and that the content and methods of population education should be approached differently depending on gender.

A Histogram Matching Scheme for Color Pattern Classification (컬러패턴분류를 위한 히스토그램 매칭기법)

  • Park, Young-Min;Yoon, Young-Woo
    • The KIPS Transactions:PartB
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    • v.13B no.7 s.110
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    • pp.689-698
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    • 2006
  • Pattern recognition is the study of how machines can observe the environment, learn to distinguish patterns of interest from their background, and make sound and reasonable decisions about the categories of the patterns. Color image consists of various color patterns. And most pattern recognition methods use the information of color which has been trained and extract the feature of the color. This thesis extracts adaptively specific color feature from images with several limited colors. Because the number of the color patterns is limited, the distribution of the color in the image is similar. But, when there are some noises and distortions in the image, its distribution can be various. Therefore we cannot extract specific color regions in the standard image that is well expressed in special color patterns to extract, and special color regions of the image to test. We suggest new method to reduce the error of recognition by extracting the specific color feature adaptively for images with the low distortion, and six test images with some degree of noises and distortion. We consequently found that proposed method shouws more accurate results than those of statistical pattern recognition.

A Bibliographical Research of The DongyiSooseBowon Gabobon ("동의수세보원(東醫壽世保元) 갑오본(甲午本)"의 서지학적(書誌學的) 연구(硏究))

  • Park, Seong-Sik;Han, Kyung-Suk
    • Journal of Sasang Constitutional Medicine
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    • v.13 no.2
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    • pp.94-109
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    • 2001
  • 1. Background and Purpose ${\ulcorner}$DongyiSooseBowon${\lrcorner}$ is the book that was mixed ${\ulcorner}$GaboBon${\lrcorner}$ and ${\ulcorner}$KyungjaBon${\lrcorner}$ which was written by DongMu. But hardly any clause or text of the GaboBon excepting ${\ulcorner}$DongyiSooseBowon${\lrcorner}$ has been described. At the year of 2000, the society of sasang constitutional medicine acqired ${\ulcorner}$HamsanSachon DongyiSooseBowon GaboGubon${\lrcorner}$ which is seen as a written copy of ${\ulcorner}$GaboBon${\lrcorner}$. According to Lee Sung-Su who is the great-grandson of DongMu's older brother, ${\ulcorner}$HamsanSachon DongyiSooseBowon GaboGubon${\lrcorner}$ was worked by Lee Jin-Yoon who is the grandson of DongMu's older brother, and it was copied by Han Min-Gab and now is owned by Lee Sung-Su who is son of Lee Jin- Yoon. 2. Methods This paper was written in order to understand of ${\ulcorner}$HamsanSachon DongyiSooseBowon GaboGubon${\lrcorner}$ through the study to focus on the bibliographical character. 3. Result and Conclusion 1) It is reasonable that ${\ulcorner}$HamsanSachon DongyiSooseBowon GaboGubon${\lrcorner}$ had copied to the original ${\ulcorner}$DongyiSoose Bowon GaboGubon${\lrcorner}$ which was written by DongMu. 2) We can find the character of ${\ulcorner}$HamsanSachon DongyiSooseBowon GaboGubon${\lrcorner}$ as follows. (1) It has the table of contents, the definition of the number of the texts, and the article number of each texts. (2) ${\ulcorner}$KyungJaBon${\lrcorner}$ and ${\ulcorner}$SinchukBon${\lrcorner}$ has different number of the texts about ${\ulcorner}$The general remarks on the Soyangin${\lrcorner}$. (3) It is different with original ${\ulcorner}$GaboBon${\lrcorner}$ because of the extracting marks of the text. (4) It is supposed that it has the pares which was additionally or wrongly amended by someone. 3) We can consider that the character of original ${\ulcorner}$GaboBon${\lrcorner}$ which was written by DongMu from ${\ulcorner}$HamsanSachon DongyiSooseBowon GaboGubon${\lrcorner}$ as follows. (1) ${\ulcorner}$The Discourse on Nature and Order${\lrcorner}$${\sim}$${\ulcorner}$The Discourse on the Four Principles${\lrcorner}$ is original articles of ${\ulcorner}$GaboBon${\lrcorner}$. (2) The head title of${\ulcorner}$The Discourse on the Origin of Oriental Medicine${\lrcorner}$ was not in ${\ulcorner}$GaboBon${\lrcorner}$. (3) It is not clear whether ${\ulcorner}$The Discourse on the General Health Maintenance${\lrcorner}$ and ${\ulcorner}$The Discourse on Identifying Four Constitutions${\lrcorner}$ is original texts or amended texts of ${\ulcorner}$GaboBon${\lrcorner}$. So it is required more study about it.

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Studies on the Modeling of the Three-dimensional Standard Face and Deriving of Facial Characteristics Depending on the Taeeumin and Soyangin (소양인, 태음인의 표준 3차원 얼굴 모델링 개발 및 그 특성에 관한 연구)

  • Lee, Seon-Young;Hwang, Min-Woo
    • Journal of Sasang Constitutional Medicine
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    • v.26 no.4
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    • pp.350-364
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    • 2014
  • Objectives This study was aimed to find the significant features of face form according to the Taeeumin and Soyangin by analyzing the three-dimensional face information data. Also, making standard face of the Taeeumin and Soyangin was an object of this study. Methods We collected three-dimensional face data of patients aged between 20~45 years old diagnosed by a specialist of Sasang constitutional medicine. The data were collected using a 3D scanner, Morpheus 3D(Morpheus Corporation, KOREA). Extracting a face feature point total of 64, was set to 332 pieces(height, angle, ratio, etc.) of each variable between feature points. ANOVA test were used to compare the characteristics of subjects according to the Taeeumin and Soyangin. Results When not to consider gender, the Taeeumin and Soyangin were different from the 18 items(3 items in the ear, 9 items in the eye, 1 item in the nose, 1 item in the mouth, 4 items in the jaw). When to consider gender, the Taeeumin and Soyangin men were different from the 6 items(1 item in the ear, 2 items in the nose, 3 items in the face). And the Taeeumin and Soyangin women were different from 17 items(1 item in the ear, 10 items in the eye, 2 items in the nose, 1 item in the mouth, 3 items in the face). Conclusions These results show Taeeumin's face(both men and women) width of the right and left is larger than the length of the top and bottom. Compared to men of Soyangin, men of Taeeumin has greater wings of the nose. Compared to women of Soyangin, women of Taeeumin has longer length of the eye. Soyangin's face(both men and women) length of the top and bottom is larger than the width of the right and left. Compared to men of Taeeumin, men of Soyangin has smaller wings of the nose. Compared to women of Taeeumin, women of Soyangin has more stereoscopic facial features at the top and bottom of the lateral face. Also, by accumulating three-dimensional face data, this study modeled the standard facial features by Taeeumin and Soyangin. These results may be helpful in the development of Sasang constitutional diagnostics utilizing the characteristics of the facial form at later.

Multi-sensor Image Registration Using Normalized Mutual Information and Gradient Orientation (정규 상호정보와 기울기 방향 정보를 이용한 다중센서 영상 정합 알고리즘)

  • Ju, Jae-Yong;Kim, Min-Jae;Ku, Bon-Hwa;Ko, Han-Seok
    • Journal of the Korea Society of Computer and Information
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    • v.17 no.6
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    • pp.37-48
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    • 2012
  • Image registration is a process to establish the spatial correspondence between the images of same scene, which are acquired at different view points, at different times, or by different sensors. In this paper, we propose an effective registration method for images acquired by multi-sensors, such as EO (electro-optic) and IR (infrared) sensors. Image registration is achieved by extracting features and finding the correspondence between features in each input images. In the recent research, the multi-sensor image registration method that finds corresponding features by exploiting NMI (Normalized Mutual Information) was proposed. Conventional NMI-based image registration methods assume that the statistical correlation between two images should be global, however images from EO and IR sensors often cannot satisfy this assumption. Therefore the registration performance of conventional method may not be sufficient for some practical applications because of the low accuracy of corresponding feature points. The proposed method improves the accuracy of corresponding feature points by combining the gradient orientation as spatial information along with NMI attributes and provides more accurate and robust registration performance. Representative experimental results prove the effectiveness of the proposed method.

Antioxidative and Biological Activities of Santalum album Extracts by Extracting Methods (추출방법에 따른 백단향의 항산화 및 생리활성)

  • Kim, Tae-Hoon
    • Food Science and Preservation
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    • v.15 no.3
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    • pp.456-460
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    • 2008
  • Santalum album has been used as a folk medicine for treatment of skin diseases, inflammation, gonorrhea, gleet, and cystitis in India and other Asian countries. In a search for possible bioactive agents from natural sources, we found that the various solvent extracts of S. album showed significant antioxidative effect in 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity test and moderate other biological functions submitted to the several bioassay systems for whitening and cytotoxicity evaluations. Among the tested extracts displayed DPPH radical scavenging activity, and the 70% acetone extract showed the most potent activity with an $IC_{50}$ value of $18.6\;{\mu}g/ml$, more potent than a positive control, L-ascorbic acid ($IC_{50}$, $28.7\;{\mu}g/mL$). Also, anti-lipid peroxidation, tyrosinase inhibitory, and cytotoxic effects were determined in each experiment. Total phenolic content of 70% acetone extract was found to be 117.1 mg equivalent of gallic acid per g of extract. Previous phytochemical investigation reveals the presence of phenolic compounds. The results indicate that S. album possess potential antioxidant activity and phenolic constituents are responsible for this capacity.

Chemical Components and Physiological Activities of Bamboo (Phyllostachys bambusoides Starf) Extracts Prepared with Different Methods (추출방법에 따른 대나무(왕대) 추출물의 화학성분 및 생리활성)

  • Ju, In-Ok;Jung, Gi-Tai;Ryu, Jeong;Choi, Joung-Sik;Choi, Yeong-Geun
    • Korean Journal of Food Science and Technology
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    • v.37 no.4
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    • pp.542-548
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    • 2005
  • Chemical components and physiological activities Bamboo (Phyllostachys bambusoides Starf) extracts obtained by burning, dry heating or extracting with water or 70% ethanol and were investigated. Contents of soluble solid and total phenolic compounds were highest in the ethanol extract. Contents of polyphenols such as catechin, chlorogenic acid, caffeic acid, 3-hydroxy benzoic acid and ferulic acid were determined. Free sugars consisted of galactose, glucose, fructose, and sucrose. Organic acids including citric, tartaric, malic, succinic, and acetic acid were present in the bamboo extracts. Antioxidant activities of dry heat and ethanol extracts were higher than those of BHA or ${\delta}-tocopherol$. Nitrite- scavenging effect of extracts ranged from 84.7 to 99.6% at pH 1.2 ana 3.0. Tyrosinase-inhibitory activity was higher in the water extract, and SOD-like and ACE-inhibitory activity were highest in tile dry kent extract. Antimicrobial activities of the bamboo extracts were strong against Bacillus subtilis, Escherichia coli O157, and Staphylococcus aureus.

Design of Optimized pRBFNNs-based Face Recognition Algorithm Using Two-dimensional Image and ASM Algorithm (최적 pRBFNNs 패턴분류기 기반 2차원 영상과 ASM 알고리즘을 이용한 얼굴인식 알고리즘 설계)

  • Oh, Sung-Kwun;Ma, Chang-Min;Yoo, Sung-Hoon
    • Journal of the Korean Institute of Intelligent Systems
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    • v.21 no.6
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    • pp.749-754
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    • 2011
  • In this study, we propose the design of optimized pRBFNNs-based face recognition system using two-dimensional Image and ASM algorithm. usually the existing 2 dimensional face recognition methods have the effects of the scale change of the image, position variation or the backgrounds of an image. In this paper, the face region information obtained from the detected face region is used for the compensation of these defects. In this paper, we use a CCD camera to obtain a picture frame directly. By using histogram equalization method, we can partially enhance the distorted image influenced by natural as well as artificial illumination. AdaBoost algorithm is used for the detection of face image between face and non-face image area. We can butt up personal profile by extracting the both face contour and shape using ASM(Active Shape Model) and then reduce dimension of image data using PCA. The proposed pRBFNNs consists of three functional modules such as the condition part, the conclusion part, and the inference part. In the condition part of fuzzy rules, input space is partitioned with Fuzzy C-Means clustering. In the conclusion part of rules, the connection weight of RBFNNs is represented as three kinds of polynomials such as constant, linear, and quadratic. The essential design parameters (including learning rate, momentum coefficient and fuzzification coefficient) of the networks are optimized by means of Differential Evolution. The proposed pRBFNNs are applied to real-time face image database and then demonstrated from viewpoint of the output performance and recognition rate.

Changes of the Protein Contents of Seafood Cooking Drips by Gamma Irradiation (감마선 조사에 의한 수산 자숙액의 단백질 함량 변화)

  • Choi, Jong-Il;Kim, Hyun-Joo;Sung, Nak-Yun;Byun, Eui-Baek;Kim, Jae-Hun;Chun, Byung-Soo;Ahn, Dong-Hyun;Cho, Kook-Yeon;Byun, Myung-Woo;Lee, Ju-Woon
    • KSBB Journal
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    • v.23 no.6
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    • pp.489-493
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    • 2008
  • Although the seafood cooking drips were the byproducts from the fishery industry and being wasted, it had many nutrients including proteins. In this study, the effect of a gamma irradiation on the cooking drips from Hizikia fusiformis, Enteroctopus dofleni and Thunnus thynnus were investigated. The cooking drips were extracted with 70% ethanol solution, and the extracts were analysed for the protein concentration by three different methods of Lowry, BCA and Kjeldahl. The extracts were irradiated with different doses and the protein contents were compared with respect to the absorbed doses. Total content of the proteins was increased with increasing irradiation dose. The change of protein pattern in the irradiated cooking drips was also confirmed by SDS-PAGE analysis. These results shown that the proteins in cooking drips could be unfolded or aggregated by the irradiation. Therefore, gamma irradiation could be considered as an effective method for extracting useful proteins.