• Title/Summary/Keyword: Identification of Patterns

Search Result 852, Processing Time 0.026 seconds

Quality comparison of musk products using a chromatographic pattern analysis (사향의 크로마토그램 패턴 분석을 통한 품질비교 연구)

  • Cho, Chong Woon;Gao, Dan;Kang, Jong Seong;Jung, Hyo won;Park, Yong-Ki
    • The Korea Journal of Herbology
    • /
    • v.36 no.4
    • /
    • pp.41-50
    • /
    • 2021
  • Objectives : This study is to check the quality of Moschus products in Korean markets using a chromatographic analysis. Methods : We collected musk products, two genuine products from Russia (A, B), two authentic products from Hong Kong (C) and Korea (D), the Ministry of Food and Drug Safety (MFDS) standard (E), and two fire ants products (E, F). Results : For identification, TLC analysis of 60% ethanol extracts of each product showed that A, B, C, and E have the suitable patterns before color development at 365 nm UV light for the MFDS regulation in Korea. A clear red spot was observed from the E at Rf 0.6 with 365 nm UV light after color development, but this spot was not found in A and B. For the purity test, a distinct violet spot with Rf 0.87 was observed from the A and B in TLC analysis of methanol extracts of each product at white light, however, this spot was not matched with the impurities of E and F. In HPLC-UV pattern analysis, a similar peak pattern was shown in A, B and E, and similar peaks were observed C, although the similarity was weaker than that of A, B, and E. The F and G showed different peak patterns compared with the peak patterns of other samples. Conclusions : Hence, it is considered that the test methods need flexibility in application for identification and purity test depending on the type of sample.

Automatic Identification of Digital Modulation Methode Using an Artification Neural Network (신경망을 이용한 디지털 변조방식의 자동식별)

  • 신용조
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.25 no.10B
    • /
    • pp.1769-1776
    • /
    • 2000
  • In this paper a new method is proposed to identify a modulation method in the case of unknown digitally modulated input signals. The proposed identification method is implemented with an artificial neural network which is based on characteristic feature extracted from the instantaneous amplitude the instantaneous phase and the instantaneous frequency of the input signals. The proposed method was simulated with 9 type signals (ASK2, FSK2, FSK4, PSK2, PSK4, PSK8, QAM8, QAM16) in a noisy communication environment. The results show that the artificial neural network can accurately recognize all kinds of patterns.

  • PDF

Efficient Iris Recognition through Improvement of Feature Vector and Classifier

  • Lim, Shin-Young;Lee, Kwan-Yong;Byeon, Ok-Hwan;Kim, Tai-Yun
    • ETRI Journal
    • /
    • v.23 no.2
    • /
    • pp.61-70
    • /
    • 2001
  • In this paper, we propose an efficient method for personal identification by analyzing iris patterns that have a high level of stability and distinctiveness. To improve the efficiency and accuracy of the proposed system, we present a new approach to making a feature vector compact and efficient by using wavelet transform, and two straightforward but efficient mechanisms for a competitive learning method such as a weight vector initialization and the winner selection. With all of these novel mechanisms, the experimental results showed that the proposed system could be used for personal identification in an efficient and effective manner.

  • PDF

Automating Quality System -New Rules for Pattern Identification in Control Charts- (품질관리 자동화 -공정의 이상 패턴 인식을 위한 법칙-)

  • Kim, Seong-In;Cho, Nam-Gil;Han, Jeong-Hee
    • IE interfaces
    • /
    • v.8 no.3
    • /
    • pp.249-257
    • /
    • 1995
  • Expert system is an effective approach for quality system to be automated and thus to be an essential integrating mechanism in any move towards CIM(Computer Integrated Manufacturing). A quality control expert system is introduced and its relationship to CIM is illustrated in a case study. Process control expert system developed by Kim and Sin[6] has been improved via ODBC(Open DataBase Connectivity) for efficient information network, graph representation using Windows API for rapid response and some new rules for identification of patterns in control charts.

  • PDF

Foreign Exchange Return Predictability: Rational Expectations Risk Premium vs. Expectational Errors

  • Moon, Seongman
    • East Asian Economic Review
    • /
    • v.22 no.4
    • /
    • pp.467-505
    • /
    • 2018
  • We propose a simple identification scheme for the causes of the violations of uncovered interest parity. Our method uses the serial dependence patterns of excess returns as a criterion for judging performance of economic models. We show that a mean reverting component in excess returns, representing a violation of uncovered interest parity, mainly contributes to generating different serial dependence patterns of excess returns: rational expectations risk premium models tend to generate negative serial dependence of excess returns, while expectational errors models tend to generate positive serial dependence.

Automatic classify of failure patterns in semiconductor fabrication for yield improvement (수율 향상을 위한 반도체 공정에서의 불량 유형 자동 분류)

  • 한영신;최성윤;김상진;황미영;이칠기
    • Proceedings of the Korea Society for Simulation Conference
    • /
    • 2003.11a
    • /
    • pp.147-151
    • /
    • 2003
  • Yield enhancement in semiconductor fabrication is important. Even though DRAM yield loss may be attributed to many problems, the existence of defects on the wafer is one of the main causes. When the defects on the wafer form patterns, it is usually an indication for the identification of equipment problems or process variations. In this paper describes the techniques to automatically classify a failure pattern using a fail bit map.

  • PDF

A study on the up-cycling characteristics of the marquage paintings in contemporary fashion (현대패션에 나타난 마카쥬 기법의 업 사이클링 표현 특성)

  • Han, Yeon-Hee;Kim, Jung-Sook
    • Journal of the Korea Fashion and Costume Design Association
    • /
    • v.21 no.2
    • /
    • pp.139-151
    • /
    • 2019
  • This study intends to present the directions for effective up-cycling design using Marquage painting through analysis of trends and the formative characteristics of fashion products. Research was conducted through a literature review (published papers, books and web site contents). Cases were analyzed by examining the contents of web sites of global luxury brands, representative workshops, and social network sites (SNS). The results of the study are categorized as follows, First, Marquage paintings are continuously used by global luxury brands and have developed as an expression of self-ownership and the personalization of one's identity. Second, fashion brands use Marquage painting as a customized service for sales. On the other hand, Marquage paintings are used as a kind of up-cycling to present old goods as brand new ones. Third, the patterns used in Marquage painting were classified into five types: geometric patterns, logo patterns, character patterns, lettering patterns, and art patterns. Moreover, formalization by Marquage patterns is represented by identification, customization, and up-cycling. Finally, to up-cycle the expressive features of Marquage- sustainability, scarcity, storytelling, and originality based on factors of up-cycling need to be reflected.

Development of Pattern Identification Questionnaire for Attention-Deficit/Hyperactivity Disorder (ADHD) in Korean Medicine (주의력결핍 과잉행동장애(ADHD) 한의 변증 설문지 개발 연구)

  • An, Yunyoung;Jeong, Minjeong;Kim, Miyeon;Kim, Lakhyung
    • Journal of Oriental Neuropsychiatry
    • /
    • v.30 no.1
    • /
    • pp.1-11
    • /
    • 2019
  • Objectives: Attention-Deficit/Hyperactivity Disorder (ADHD) is characterized by a persistent pattern of inattention and/or hyperactivity impulsivity that interferes with function or development in children. In traditional Korean medicine (TKM) and traditional Chinese medicine (TCM), ADHD is classified by several patterns based on symptoms and signs. However, currently, there is no objective diagnostic tool for ADHD in traditional medicine. The objective of this study was to develop the Pattern Identification Questionnaire for ADHD (parents-survey style) to be used in Korean medicine, through a literature review and consultation with groups of experts. Methods: The types of pattern identifications of ADHD mentioned in 13 pieces of Korean and Chinese literatures and their symptoms and signs were analyzed. The advisory committee (15 Neuropsychiatrist and 11 Pediatrist in Korean Medicine) assessed the appropriateness of the literature selection and the types of pattern identification selection and their symptoms and signs, and weighed the significance of the symptoms and signs. The Pattern Identification Questionnaire for ADHD was developed using the calculated weights by evaluated significance. The translation of symptoms and signs to the Korean language was achieved through consultation with expert translators. Results: 1. Four pattern identification types and their symptoms and signs were selected according to frequency of appearance in the Korean and Chinese literatures, and were reviewed by the advisory committee: Kidney yin deficiency and liver yang ascendant hyperactivity (腎虛肝亢), Dual deficiencies in the heart and spleen (心脾兩虛), Phlegm-fire harassing the heart (痰火擾心), and Spleen weakness and liver energy preponderance (脾虛肝旺). 2. The weights of all the symptoms and signs in the four patterns were calculated using the means and standard deviations of the symptoms and signs' importance that were obtained from specialists' significance weighting. 3. The Pattern Identification Questionnaire for ADHD (parents-survey style) in Korean medicine composed of 38 questions was suggested. Conclusions: Using a review of the literature and expert advice, Pattern Identification Questionnaire for ADHD (parents-survey style) in Korean medicine was developed. Further clinical study is required to develop a final version of the questionnaire through the evaluation of reliability and validity.

Preliminary Study for Development of Pattern Identification Tool for Radiation Pneumonitis (방사선폐렴 변증(辨證)도구 개발을 위한 기초연구)

  • Kim, Jae-hyo;Bhang, Yeon-hee;Do, Ha-yoon;Ahn, Jun-mo;Kim, Kwan-il;Lee, Beom-joon;Jung, Sung-ki;Jung, Hee-jae
    • The Journal of Internal Korean Medicine
    • /
    • v.38 no.1
    • /
    • pp.32-47
    • /
    • 2017
  • Objective: The purpose of this study was to develop a standard tool for pattern identification of radiation pneumonitis. Methods: Textbooks, published studies, and references with comments about patterns were reviewed. Through the Delphi method, we determined pattern identifications based on advice from a committee of experts composed of 13 Korean respiratory internal medicine professors. Results: Using the Delphi method, four pattern identifications were chosen: Qi Deficiency (氣虛), Yin Deficiency (陰虛), Heat Toxin (熱毒), and Phlegm Dampness (痰濕). The tool was developed in a question-and-answer format with 35 questions. Conclusions: A pattern identification tool that can discriminate the patterns of radiation pneumonitis for standardized diagnosis was developed through expert consultation. Further study of its validity and reliability is necessary.

A Study on the Major Symptoms by Each Pattern of Acne Vulgaris (여드름의 변증 유형별 주요 증후에 관한 연구)

  • Jeong, Woo-Yeol;Hong, Eu-Gene;Shin, Jun-Hyuk;Kim, Yoon-Bum;Nam, Hae-Jung;Kim, Kyu-Seok;Lee, Jun-Hee
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
    • /
    • v.27 no.4
    • /
    • pp.76-86
    • /
    • 2014
  • Objective : This study was performed to find out the differential points of the pattern identification for Acne vulgaris and suggest them to the clinic setting Methods : We searched the papers that suggest patterns identification for Acne vulgaris through China National Knowledge Infrastructure(CNKI), Oriental Medicine Advanced Searching Integrated System(OASIS), Korean Traditional Knowledge Portal(KTKP), Korean Studies Information Service System(KISS). We looked through all the papers, excluded unintended papers, and finally chose some papers that are suitable for inclusion. Then, We extracted all the patterns of Acne vulgaris and chose frequently suggested patterns. Finally we extracted symptoms from selected patterns and arranged them in order of frequency. Results and Conclusions : 1. We found 215 papers and chose 17 papers (Korean : 6, Chinese : 11). 2. We extracted total 67 demonstrations and chose Patterns of Wind-Heat, Damp-Heat, Phlegm and Static blood, Disharmony of the Thoroughfare and Controlling vessels. 3. In Acne vulgaris, the pattern of Wind-Heat tends to have a red papule, sometimes pustule, pain with itching, burning sensation, tidal reddening of the cheeks, white head or black head. The pattern of Damp-Heat tends to have a pustule, node, redness and swelling, pain and greasy skin. The pattern of Phlegm and Static blood has a tendency to be a nodule or cystoma that is hard, dark, painful, long lasting and hard to recover and easy to recur with a scar, pimple, pigmentation. The pattern of Disharmony of the Thoroughfare and Controlling vessels tends to be exacerbated before menstruation, have a small papule that is not easily treated under the chin or around the mouth.