• 한국정밀공학회지
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• 제16권12호
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• pp.119-125
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• 1999

This paper gives an overview of the various approaches to designing statistical pattern recognition scheme based on Bayes discrimination rule and the artificial neural networks for rotating machine condition classification. Concerning to Bayes discrimination rule, this paper contains the linear discrimination rule applied to classification into several multivariate normal distributions with common covariance matrices, the quadratic discrimination rule under different covariance matrices. Also we discribes k-nearest neighbor method to directly estimate a posterior probability of each class. Five features are extracted in time domain vibration signals. Employing these five features, statistical pattern classifier and neural networks have been established to detect defects on rotating machine. Four different cases of rotation machine were observed. The effects of k number and neural networks structures on monitoring performance have also been investigated. For the comparison of diagnosis performance of these two method, their recognition success rates are calculated form the test data. The result of experiment which classifies the rotating machine conditions using each method presents that the neural networks shows the highest recognition rate.

• 정보관리연구
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• 제19권1호
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• pp.95-122
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• 1988

지금까지 데이터베이스를 만들 때에 일정한 표기기준(表記基準)이 없어서 정보교환(情報交換)이 불가능하였으며, 검색(檢索)에 있어서도 어려움이 있었다. 이 자료(資料)에서는 검색(檢索)을 위한 데이터베이스를 제작(製作)할 때에 사용하는 기호(記號)와 용어(用語)의 표기법(表記法)을 제시하고 있다. 학술논문(學術論文)을 기술(記述)할 때에 사용되고 있는 기호(記號)와 문자(文字) 가운데 컴퓨터 단말기(端末機)를 통하여 입력(入力) 및 검색(檢索)이 곤란한 경우가 있으므로 이러한 기호(記號)와 문자(文字)를 입력(入力) 검색(檢索)이 가능한 형태(形態)로 표현하는 방법(方法)을 고안했으며, 문교부(文敎部)가 고시한 "한글 맞춤법"과 "외래어 표기법"을 검토하여 2가지 이상으로 표기(表記)가 가능한 부분에 대해 검색효율(檢索效率)이 높아지는 쪽을 택해 일정하게 용어(用語)를 표기(表記)하도록 규정(規定)했다.

• 한국균학회지
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• 제41권4호
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• pp.280-286
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• 2013

낙엽버섯속 47종이 현재까지 한국에서 보고되었다. 47종 중 26종이 기존에 보고되었고, 10종의 신종과 새롭게 기록된 11종의 일반명이 이 연구에서 분류키와 함께 보고하였다. 일반명은 로마자표기법에 따랐다.

• 한국시뮬레이션학회논문지
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• 제18권4호
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• pp.107-116
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• 2009

병원 응급실의 환자 과밀 현상이 점점 더 심해지고 있는 상황이다. 본 연구에서는 응급실의 치료 서비스 수준 및 시스템 효율을 개선하는 방안의 일환으로 간호사에게 치료 테스크를 할당하는 규칙을 개발하고자 한다. 제시하는 규칙에서는 매 치료 테스크 할당 시에 4개 속성 즉 1)태스크의 수행시간, 2)치료 요청 후의 흐른 시간, 3)모든 치료가 다 끝날 때까지의 총 남은 시간, 4)남은 치료단계의 개수를 동시에 고려한다. 각 치료 치료태스크의 기준별 긴급도를 계산하고, 기준별 중요도를 반영한 전체긴급도 값을 계산한 후 이 값이 가장 큰 태스크에 간호사를 할당한다. 컴퓨터 시뮬레이션을 통하여 M 병원 응급실의 간략화 모형을 대상으로 기존규칙과 비교실험을 수행하였다. 환자가 응급실에 머문 평균시간 및 단위시간 동안 처리한 환자 수를 평가기준으로 실험한 결과 제시한 규칙이 두 기준 모두에서 우수한 성능을 보였다.

• Journal of Biosystems Engineering
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• 제26권2호
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• pp.141-146
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• 2001

Lots of the agricultural information come from human experiences and are in non-numerical forms. Therefore, it is difficult to process to be processed in a conventional data processing way. An internet expert system for agricultural application using the ASP(active server page) was developed to solve this problem and consisted of databases, an inference engine, and an user interface. The databases were composed of rule base, question base and link data. The inference engine was developed with the ASP for connection with web between databases. The used interface was developed with the CGI(common gateway interface), so that question could be answered on a web browser, and the session technique was used to provide proper result to each of multi-users. A prototype internet expert system was developed for diagnosis of diseases and nutritional disorders of paddy rice. The expert system was interactively worked through WWW(world wide web) at remote sites by multi-users, even at the same time. The rule base could be easily updated and modified from a web server computer by a knowledge engineer.

• 한국초등과학교육학회지:초등과학교육
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• 제37권4호
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• pp.372-390
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• 2018

The purpose of this research is to know the scientific reasoning ability of elementary students. In order to find it, 320 elementary students wrote a report about germination of the 700 or 2,000 years old seeds. Their writings were analyzed by scientific writing analysis frameworks, Scientific Reasoning Types and Scientific Reasoning Level Criteria developed by Lim (2018). Minto Pyramid Principles was used to show statements and relations of statements related to scientific reasoning. This paper showed scientific reasoning statements of elementary students about germination of seeds. The characteristics of scientific reasoning of elementary students were as follows. In the process of logical writing by the types of scientific reasoning, many students showed various characteristics and different levels. In the writings based on inductive reasoning, they did not distinguish between common features and differences of cases, and did not derive the rules based on common features and differences of the cases. In the writings based on deductive reasoning, there were cases where the major premise corresponding to the principle or rule was omitted and only the phenomenon was described, or the rule was presented but not connected with the case. In the writings based on abductive reasoning, the ability to selectively use the background knowledge related to the question situation was not sufficient, and borrowing of similar background knowledge, which was commonly used in other situations, was very rare.

• 통상정보연구
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• 제13권3호
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• pp.143-166
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• 2011

현재 원산지 규정이 국제무역상 쟁점으로 등장하게 된 주된 이유는 원산지규정이 각 국가마다 상이할 뿐만 아니라 그 자체의 불명확성, 복잡성, 차별적 적용 가능성으로 인해 상당한 무역장벽으로 작용하고 있기 때문이다. 또한, 생산의 글로벌화 글로벌 기업 활동이 증가함에 따라 2개국 이상에 걸쳐 생산된 물품이 증가하여 해당품목의 원산지가 어디인지 결정 문제가 발생하는 사례가 발생한다. 본 연구에서는 원산지규정에 관한 가장 기초적이고 기본적인 연구로 원산지 결정기준에 대해 연구하였다. 이를 위해 한 미국 FTA, 한 EU FTA, 한 ASEAN FTA 원산지규정을 연구 대상으로 하여 관련 사례를 구체적으로 분석하여, 상호 비교를 통해 시사점을 파악하고자 하였다. 분석 결과, 한 미 FTA, 한 EU FTA와 한 ASEAN FTA로 원산지결정은 부가가치기준(value percentage content), HS 세번변경기준(change of tariff heading), 특정공정기준(specific process rule) 등이 이용되며 실질변형기준은 한 미 FTA에서는 역내에서 창출된 부가가치가 일정 수준 이상이면 그 국가를 원산지로 인정하는 방식 (RVC : Regional Value Content)을 인정하고 있으며, 한편, 한 EU FTA에서는 역외산 부품 및 원재료의 금액이나 수량이 일정 기준 이하로 사용되는 경우 원산지자격을 부여하는 방식 (MC : Import Content)을 인정하고 있다.

• 대한치과의사협회지
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• 제17권2호통권117호
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• pp.141-145
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• 1979

The author, through oral examination, had surveyed the caries experienced teeth in 250 Korean mental Disorders(153 males and 97 fameles) who took it a rule consume a Vegetable diet and had litte chance to Consume refimed Corbohydrates, unlike the Common populars. DMF rate DMFT rate index DT rate MT rate and FT rate had been calculated and Compared with Common Popular's in same ages group. Following are the obtained results 1. In the mental Disorders, Caries experience rate was 52.19% 2. D.M.F. rate and index were lower in the females than in the males 3. The Caries experience rate in the mental Disorders was lower than in the Common Populars 4. In the mental Disorders the F.T. rate was higher in females than in males D.T. rate higher in males than in females and MT rate, lower in males than in females 5. In generally D.T. rate in the mental Disorders was lower than in Controls, M.T. rate resembled as Controls and F.T. rate higher

• ETRI Journal
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• 제26권5호
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• pp.437-442
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• 2004

In this paper we address the problem of capacity optimization in a Universal Mobile Telecommunication System (UMTS) radio network. We present an optimization algorithm for finding the best settings of the antenna tilt and common pilot channel power of the base stations. This algorithm is a parametric method, based on a set of rules. We evaluated our optimization technique on a virtual network scenario with 75 cells. For this scenario we show an increase in capacity compared to the initial settings of about 60 percent.

• Asian Pacific Journal of Cancer Prevention
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• 제14권9호
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• pp.5409-5413
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• 2013

Background: To assess the accuracy of ultrasound in differentiating endometrioma from ovarian cancer and to describe pattern recognition for atypical endometriomas mimicking ovarian cancers. Materials and Methods: Patients scheduled for elective surgery for adnexal masses were sonographically evaluated for endometrioma within 24 hours of surgery. All examinations were performed by the same experienced sonographer, who had no any information of the patients, to differentiate between endometriomas and non-endometriomas using a simple rule (classic ground-glass appearance) and subjective impression (pattern recognition). The final diagnosis as a gold standard relied on either pathological or post-operative findings. Results: Of 638 patients available for analysis, 146 were proven to be endometriomas. Of them, the simple rule and subjective impression could sonographically detect endometriomas with sensitivities of 64.4% (94/146) and 89.7% (131/146), respectively. Of 52 endometriomas with false negative tests by the simple rule, 13 were predicted as benign masses and 39 were mistaken for malignancy. Solid masses and papillary projections were the most common forms mimicking ovarian cancer, consisting of 38.5% of the missed diagnoses. However, with pattern recognition (subjective impression), 32 from 39 cases mimicking ovarian cancer were correctly predicted for endometriomas. All endometriomas subjectively predicted for ovarian malignancy were associated with high vascularization in the solid masses. Conclusions: Pattern recognition of endometriomas by subjective assessment had a higher sensitivity than the simple rule in characterization of endometriomas. Most endometriomas mimicking ovarian malignancy could be correctly predicted by subjective impression based on familiarity of pattern recognition.