• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2000년도 추계정기학술대회:지능형기술과 CRM
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• pp.289-299
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• 2000

This study provides an application of datamining approach to CQI(Continuous Quality Improvement) using the discharge summary. First, we found a process variation in hospital infection rate by SPC (Statistical Process Control) technique. Second, importance of factors influencing hospital infection was inferred through the decision tree analysis which is a classification method in data-mining approach. The most important factor was surgery followed by comorbidity and length of operation. Comorbidity was further divided into age and principal diagnosis and the length of operation was further divided into age and chief complaint. 24 rules of hospital infection were generated by the decision tree analysis. Of these, 9 rules with predictive prover greater than 50% were suggested as guidelines for hospital infection control. The optimum range of target group in hospital infection control were Identified through the information gain summary. Association rule, which is another kind of datamining method, was performed to analyze the relationship between principal diagnosis and comorbidity. The confidence score, which measures the decree of association, between urinary tract infection and causal bacillus was the highest, followed by the score between postoperative wound disruption find postoperative wound infection. This study demonstrated how datamining approach could be used to provide information to support prospective surveillance of hospital infection. The datamining technique can also be applied to various areas fur CQI using other hospital databases.

• 한국물환경학회지
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• 제33권2호
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• pp.140-148
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• 2017

An important factor in determining the design and treatment efficiency of wastewater treatment plants (WWTPs) is the quantity and quality of influent. These detailed and accurate information is essential for process control, diagnosis and operation, as well as the basis in designing the plant, selecting the process and determining the optimal capacity of each bioreactor. Probabilistic models are used to predict the wastewater quantity and quality of WWTPs, which are widely used to improve the design and operation of WWTPs. In this study, the optimal probability distribution of time series influent data was derived for predicting water quantity and quality, and wastewater influent data were generated using the Monte Carlo simulation analysis. In addition, we estimated various alternatives for the improvement of bioreactor operations based on present operation condition using the generated influent data and activated sludge model, and suggested the alternative that can operate the most effectively. Thus, the influent quantity and quality are highly correlated with the actual operation data, so that the actual WWTPs influent characteristics were well reproduced. Using this will improve the operating conditions of WWTPs, and a proposed improvement plan for the current TMS (Tele Monitoring System) effluent quality standards can be made.

• 대한치과교정학회지
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• 제52권1호
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• pp.29-41
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• 2022

Objective: Condylar resorption (CR) is one of the major post-surgical complications of orthognathic surgery. This systematic review (SR) aimed to evaluate epidemiological data, risk factors, and therapeutical management of CR. Methods: Six databases were screened by two investigators until September 2020 to obtain all SRs. After reading the titles and abstracts, eligible SRs were determined and data extraction was performed. Using the latest version of A Measurement Tool to Assess Systematic Reviews, the methodological quality of the included SRs was determined. Results: Ten SRs with low or critically-low methodological quality were included in this review. Mandibular hypoplasia on the sagittal plane and hyperdivergent growth pattern on the vertical plane were the most common skeletal alterations in which CR could occur after orthognathic surgery. Post-operative condylar changes were analyzed both on two-dimensional and three-dimensional (3D) radiographic examinations. The incidence of CR was not related to the fixation method. Based on the severity of the pathological conditions, management of CR can include conservative or surgical therapy. Conclusions: Despite the limited evidence in literature, CR is considered a consequence of orthognathic surgery. However, an accurate diagnosis of CR and a better orthognathic surgical planning must include 3D radiographic examinations to improve pre- and post-surgical comparison. Well-designed studies with long-term follow-up and 3D data are needed to clarify the findings of this analysis..

• Journal of the Korean Data and Information Science Society
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• 제26권4호
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• pp.895-906
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• 2015

현대인들은 건강과 삶의 질에 많은 관심을 가지고 있다. 건강 관련 TV 프로그램을 통해 어떤 질병에 대해 치료 효과가 있다는 음식들이 여러 전문가들의 입에서 소개가 되고 있다. 또한, 이런 음식들이나 의학과 관련한 연구들이 많이 발표되고 있는 실정이다. 이에 본 연구에서는 우리들의 일상생활 속에서 어떤 질병의 예후를 미리 알 수 있다면 병으로 고통 받지 않고 더 좋은 삶을 즐길 수 있을 것으로 생각이 되어 특정 수강 집단 학생들을 대상으로 이와 관련된 아건강 설문지를 통해 그 결과를 통계적으로 분석해보았다. 그 결과 성별과 10개의 진단지표의 동일성 검정 결과는 호흡기만 제외하고 나머지 9개의 진단지표는 유의수준 5%에서 유의한 차이가 있는 것으로 나타났다. 또한, 연령과 10개의 진단지표의 동일성 검정 결과는 10개의 모든 진단지표는 유의수준 5%에서 유의한 차이가 없는 것으로 나타났다. 이는 대학이라는 특정 집단의 수강 학생들을 대상으로 조사하였기 때문에 연령대를 2개의 범주로 나누었지만 20대라는 하나의 범주로도 생각할 수 있기 때문으로 판단된다.

• 전기학회논문지
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• 제57권2호
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• pp.276-285
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• 2008

These days the automobile industry, which has rapidly progressed, has been an indispensable part in social and economic activities as well as its research and development have been activated in response to various needs of consumers and markets. The second and third generation control system, getting count on safety and convenience differently than early circuits, cause the hypertrophy of wire harness. The J/Box(Junction Box), which distributes power and wires, was developed to solve the problem. As vehicles have been better in quantity and intelligence, however, environment-friendly electric apparatus system has continuously increased and ITS(Intelligent Transport System) has been introduced in earnest. In result, wires got complicated and multilateral and also there has been a stronger probability that vehicles are out of order due to various problems including mechanical failure. In this study, ISJB(Intelligent Smart Junction Box) was introduced to solve the problem. The diagnosis system was applied to prevent the overload and short of ISJE. Also, the state of vehicles displayed so that drivers monitor it in motion. Likewise error data are saved in the memory so that such data can be analyzed retrospectively. The busbar was adopted in to the main power terminal and the part of power pattern was coverd by lead. Because ISJB is more sensitive to heat in comparison to the busbar type J/Box. With regard the circuits related with safe, alternative circuits were set up in order that electronic devices may be normally operated even when an error arises. ISJB is expected to improve the safety and quality of vehicles.

• 문화기술의 융합
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• 제10권3호
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• pp.801-807
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• 2024

선형 로봇은 자동화 시스템에서 부품의 이송이나 위치 결정에 널리 사용되며 보통 높은 정밀도가 요구된다. 선형 로봇을 응용한 시스템의 제작회사에서는 로봇의 이상 유무를 작업자가 판단하는데, 작업자의 숙련도에 따라 이상 상태를 판단하는 정확도가 달라진다. 최근에는 인공지능 등의 기술을 사용하여 로봇 스스로 이상을 검출하는 방법에 관한 연구가 진행되고 있다. 본 논문에서는 전이 학습을 이용하여 선형 로봇의 볼 스크류 정렬 이상과 선형 레일 정렬 이상을 검출하는 시스템을 제안하고 가속도 센서와 토크 센서 정보를 이용한 별개의 실험을 통해 제안한 시스템의 이상 검출 성능을 검증 및 비교한다. 센서로부터 얻어진 신호를 스펙트로그램 이미지로 변환한 후, 영상 인식 인공지능 분류기를 사용하여 이상의 종류를 진단하였다. 제안한 방법은 선형 로봇뿐만 아니라 일반적인 산업용 로봇에도 적용할 수 있을 것으로 기대한다.

• 한국지능시스템학회논문지
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• 제23권5호
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• pp.400-405
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• 2013

The purpose of this study is to develop a composite platform for knowledge extractions, visualizations, and inference. Generally, the big data sets were frequently used in the healthcare and medical area. To help the knowledge managers/users working in the field, this study is focused on knowledge management (KM) based on Data Mining (DM), Knowledge Distribution Map (KDM), Decision Tree (DT), RDBMS, and SQL-inference. The proposed mechanism is composed of five key processes. Firstly, in Knowledge Parsing, it extracts logical rules from a big data set by using DM technology. Then it transforms the rules into RDB tables. Secondly, through Knowledge Maintenance, it refines and manages the knowledge to be ready for the computing of knowledge distributions. Thirdly, in Knowledge Distribution process, we can see the knowledge distributions by using the DT mechanism.Fourthly, in Knowledge Hierarchy, the platform shows the hierarchy of the knowledge. Finally, in Inference, it deduce the conclusions by using the given facts and data.This approach presents the advantages of diversity in knowledge representations and inference to improve the quality of computer-based medical diagnosis.

• Industrial Engineering and Management Systems
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• 제14권4호
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• pp.392-400
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• 2015

Monitoring of plasma etch processes for fault detection is one of the hallmark procedures in semiconductor manufacturing. Optical emission spectroscopy (OES) has been considered as a gold standard for modeling plasma etching processes for on-line diagnosis and monitoring. However, statistical quantitative methods for processing the OES data are still lacking. There is an urgent need for a statistical quantitative method to deal with high-dimensional OES data for improving the quality of etched wafers. Therefore, we propose a robust relevance vector machine (RRVM) for regression with statistical quantitative features for modeling etch rate and uniformity in plasma etch processes by using OES data. For effectively dealing with the OES data complexity, we identify seven statistical features for extraction from raw OES data by reducing the data dimensionality. The experimental results demonstrate that the proposed approach is more suitable for high-accuracy monitoring of plasma etch responses obtained from OES.

• 한국콘텐츠학회논문지
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• 제20권12호
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• pp.180-197
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• 2020

본 연구는 비대면 진료 정책의 도입과 안정화를 이루어내기 위해서는 의료소비자의 이용의도와 관련 행위에 대한 이해가 선행되어야 한다는 것을 인식하고, 건강의식과 자기효능감과 같은 개인적 특성을 중심으로 비대면 진료에 대해 기대하는 인식과 유용성이 이용의도에 어떠한 영향을 미치는 지를 실증분석을 통해 확인하고자 하였다. 본 연구에서 제안된 가설들을 검증하기 위해 PLS 3.0을 사용하여 구조모형을 검증하였고 연구 결과는 다음과 같이 요약될 수 있다. 첫째, 건강의식과 자기 효능감은 비대면 진료로 인한 비용절감, 의료서비스의 질, 접근성 및 적합성에 유의한 영향을 미치는 것으로 나타났다. 둘째, 비용절감과 의료서비스의 질, 접근성 및 적합성은 비대면 진료의 인지된 유용성에 유의한 영향을 미치는 것으로 나타났다. 셋째, 비대면 진료의 유용성은 이용의도에 유의한 영향을 미치는 것으로 나타났다. 본 연구는 비대면 진료를 대상으로 개인적 특성을 기반으로 기대인식과 유용성을 통한 이용의도를 구조적·확장적으로 다루었다는 점에서 그 의의를 찾을 수 있고 비대면 진료의 필요성에 공감하고 시대적 흐름을 인정하려 하는 상황에서 본 연구에서 다루어진 기대인식들을 기반으로 관련 정책의 제도화를 진행해 나간다면 비대면 진료에 대한 인식을 발전적으로 전환시킬 수 있음을 본 연구결과는 시사하고 있다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 춘계종합학술대회
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• pp.342-346
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• 2003

Present CDMA technology is development continuously to internet technology and new communication infra called internet construction for quality of high quality offer the changing existent existence. wireless data communication area. In the meantime, our country is tunnel of whole country over 500 by special quality that is photograph because Safety diagnosis consists to manage preservation administration is in dangerous state about safety. Domestic telemeter technology is real condition that is depending on expensive foreign goods and engineer to improve that. Therefore tunnel preservationㆍadministration more improved telemeter system develop wish to this research uses CDMA net.