• Journal of The Korean Radiological Technologist Association
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• v.29 no.1
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• pp.143-143
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• 2003

• Proceedings of the Korean Information Science Society Conference
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• 2012.06b
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• pp.37-39
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• 2012

건설현장에서 의뢰하여 품질검사전문기관에서 대행하는 건설자재의 품질시험 검사업무에 대한 신뢰성 제고를 위해 품질시험 검사 의뢰절차 및 지방국토관리청의 품질검사전문기관 등록 관리 현황을 조사하고, 품질검사전문기관에서 품질시험 검사성적서 및 시험과정자료를 정보시스템에 입력하여 관리할 수 있는 정보시스템 구축방안을 도출하고자 한다.

• Clinical and Experimental Pediatrics
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• v.51 no.10
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• pp.1071-1076
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• 2008

Purpose : Respiratory syncytial virus (RSV) is the most frequent cause of lower respiratory infections in infants and young children. Early detection allows quarantining of infected inpatients to prevent nosocomial transmission and to choose a treatment. To achieve rapid reporting, to facilitate prompt antiviral therapy, and to avoid unnecessary use of antibiotics, an easy, rapid diagnostic method for RSV is needed. We evaluated a lateral flow immunochromatography (RSV Respi-Strip test) and EIA (Enzyme immuno assay) compared to RT-PCR. Methods : From April 2007 to March 2008, 112 consecutive respiratory specimens (nasopharyngeal aspirates, throat swabs, tracheal aspirates, sputum) from patients who were suffering from the clinical signs and symptoms of respiratory tract infection were enrolled in Busan. A total of 112 patients were tested with RSV Respi-Strip (Corio-BioConcept, Belgium), EIA, and RT-PCR at the same time. Results : Of the 112 specimens tested, the number of children who showed positive results at RT-PCR and Respi-Strip were 45 and 42, respectively. The Respi-Strip rapid antigen test had a sensitivity of 88% and a specificity of 94%. The positive and negative predictive values were 90% and 92%, respectively. The agreement was 83%. Conclusion : In our study, the rapid antigen test had as much sensitivity as any method for detection of RSV. The test has many advantages such as easy performance, simple interpretation, and rapid results. If the rapid antigen test is widely applied in the clinical setting, the may be useful for diagnostic and epidemiological studies of RSV infection.

• Korean Journal of Culture and Social Issue
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• v.14 no.4
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• pp.103-117
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• 2008

The polygraph test administered by the Korean Prosecutors Office for crime investigations customarily uses the score of -12 as the cutoff point separating the subjects who lie from those who tell the truth. The criterion used by the KPO is different from the one (-13) suggested by Backster (1963) who invented the particular method for lie detection. Based on the signal detection theory applied to the real polygraph test data obtained from real crime suspects by the KPO, the present study identified the score of -8 as an optimal criterion resulting in the highest overall accuracy of the polygraph test. The classification of the subjects with the score of -8 as the criterion resulted in the highest accuracy (83.17%) compared with the accuracies of classifications with the Backster's criterion (76.24%) and the KPO's criterion (80.20%). However, the new criterion was also found to result in more false-positive cases. Based on the results from the present study, it was recommended to use the score of -8 as the criterion when the overall accuracy is important but the score of -12 or -13 when avoiding false-positive is more important than securing the overall accuracy.

• Journal of IKEEE
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• v.28 no.3
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• pp.469-473
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• 2024

In this paper proposes a study on the development of a multi-camera inline inspection system using machine vision for quality inspection of pharmaceutical containers. The proposed technique captures the pharmaceutical containers from multiple angles using several cameras, allowing for more accurate quality assessment. Based on the captured data, the system inspects the dimensions and defects of the containers and, upon detecting defects, notifies the user and automatically removes the defective containers, thereby enhancing inspection efficiency. The development of the multi-camera inline inspection system using machine vision is divided into four stages. First, the design and production of a control unit that fixes or rotates the containers via suction. Second, the design and production of the main system body that moves, captures, and ejects defective products. Third, the design and development of control logic for the embedded board that controls the entire system. Finally, the design and development of a user interface (GUI) that detects defects in the pharmaceutical containers using image processing of the captured images. The system's performance was evaluated through experiments conducted by a certified testing agency. The results showed that the dimensional measurement error range of the pharmaceutical containers was between -0.30 to 0.28 mm (outer diameter) and -0.11 to 0.57 mm (overall length), which is superior to the global standard of 1 mm. The system's operational stability was measured at 100%, demonstrating its reliability. Therefore, the efficacy of the proposed multi-camera inline inspection system using machine vision for the quality inspection of pharmaceutical containers has been validated.

• Journal of the Korean Society for Nondestructive Testing
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• v.19 no.6
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• pp.448-453
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• 1999

원전의 열성층 현상으로 발생하는 열 피로균열 및 입계응력부식균열(IGSCC) 등은 결함에 대해서 검사자의 특별한 관심과 노력 없이는 초음파를 이용해 이러한 종류의 결함검출 및 크기 측정이 쉽지 않다. 이러한 결함의 검출 및 크기 측정을 위해서 먼저 초음파 모드 변환 기법을 사용하여 결함 검출 및 결함 크기를 분류한 후에 결함 끝단에서의 초음파 회절파(tip diffraction)를 이용한 여러 가지의 초음파 기법 둥으로 정확한 결함 크기를 측정하여 가동전 중점검시 발견된 결함의 추적 관리 및 결함평가신뢰도 향상에 기여하고자 한다. 따라서, 여기서는 열 피로균열 및 입계응력부식균열 등과 같은 결함의 정확한 검출 및 크기 측정을 위해 초음파 모드 변환 기법의 특성을 철저히 이해하고 이에 관련된 초음파 신호들을 정확히 구분할 수 있는 방법을 기술하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.9
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• pp.3330-3335
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• 2010

Due to the acceleration of medical information age, the semantic interoperability of clinical information is rising up as a major issue. The laboratory results are known as the best significant area among clinical information to be required for exchanging and sharing. The aim of this research is to develop the clinical contents model for exchange laboratory results. This research was conducted from March 2008 to September 2008. Firstly, the method is to get the attributes and codes from LOINC which is one of the standard medical terminology system related to laboratory and the Reference Information Model(RIM) of Health Level 7(HL7). Secondly, the attributes from each work process around orders and reports of laboratory was analyzed. We evaluated the attributes whether they could be represented into the attributes contained in HL7's RIM. Thirdly, the prototype for hemoglobin case using the structure of clinical contents model and defined attribute. Fourthly, the face validity was done by one laboratory physician with four clinicians. The assessment contents were for the suitability involved in representation and exchange with proposed model. The results shows that the model corresponds with the aim of the research. Eventually the proposed model for the exchange of laboratory results could contributes to information interchange according to laboratory area for the future.

• Journal of Auto-vehicle Safety Association
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• v.16 no.3
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• pp.72-78
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• 2024

As the importance of eco-friendly carbon neutrality is emphasized around the world, hydrogen-electric vehicles are expected to grow rapidly, and as of July 2003, Korea has 32,500 hydrogen cars and 363 hydrogen vans. Hydrogen cars have the advantage of short charging time and long mileage. However, the safety issue of internal pressure-resistant tank is still one of the important challenges in this field. To improve this, the establishment of a safety value chain to strengthen safety is the key. In this study, a method of developing and applying a safety value chain was studied to reinforce the safety of hydrogen-resistant tank. This study is expected to contribute to the expansion of safe and reliable hydrogen supply by actively applying these safety strategies to the hydrogen electric vehicle industry.

• Journal of Korean Ophthalmic Optics Society
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• v.6 no.2
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• pp.155-160
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• 2001

To investigate the subjective refractive error with Von Graefe test. Maddox Rod test and polarizing lens test of Horizontal Heterophoria Measurement at distance on normal 109 subjects aged from 18 to 30 years old. The results were as follows: 1. Using Von Graefe Horizontal Heterophoria Measurement, they were measured 15% for orthophoria, 65% for exophoria and 20% for esophoria at distance. 2. Using Maddox Rod Horizontal Heterophoria Measurement, they were measured 14% for orthophoria, 57% for exophoria and 29% for esophoria at distance. 3. Using polarizing lens test of Horizontal Heterophoria Measurement, they were measured 15% for orthophoria, 72% for exophoria and 13% for esophoria at distance. 4. Each test average were $1.32{\Delta}BI$ for Von Graefe test, $0.88{\Delta}BI$ for Maddox Rod test and $1.76{\Delta}BI$ for polarizing lens test. 5. Patient's preference distribution were 44% for Von Graefe test, 28% for Maddox Rod test and 28% for polarizing lens test.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.599-602
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• 2009

본 연구는 2006년 3월부터 2007년 2월까지 일개 대학병원에서 출생한 고위험군 신생아 121명을 대상으로 청각선별검사인 자동화 유발이음향방사와 확진검사인 청성뇌유발전위검사를 실시하여 임상양상과 청각장애 발생률, 검사소요 시간에 대해 조사하였다. 결과는 다음과 같다. 1. 청각장애발생률은 전체 고위험군 신생아 121명 중 5명의 신생아가 난청으로 조기에 진단되었다. 2. 난청으로 확진 받은 신생아 5명의 관련 질병을 살펴보면 고빌리루빈혈증 2명, 저체중 1명, 구개열 1명, 다운증후군 1명이었다. 3. 난청으로 확진 받은 신생아 5명의 청력손실정도는 양측 고도난청 1명(70dB), 양측 중도난청 2명(55dB), 편측성 난청 2명으로 나타났다. 4. 검사소요 시간은 선별검사인 유발이음향방사 검사를 실시하는 데 소요된 총 시간의 평균은 $107.5{\pm}65.2$초였고, 확진검사인 청성뇌유발전위 검사를 실시하는 데 소요된 총 시간의 평균은 $1,500{\pm}90.1$초가 소요되었다. 5. 연구를 진행하는 도중 11명의 고위험군 신생아가 이사, 연락처 변경, 경제적 사정으로 추적검사에 참여하지 않았다. 신생아 난청은 다른 질병에 비해 발병률이 높은 선천성 질환으로서 모든 신생아를 대상으로 청각검사를 실시하여 난청의 조기진단에 대한 선별검사의 정착이 필요하다고 생각된다.