• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.703-705
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• 2003

파일 무결성 검사는 시스템 자원의 안정성 여부를 판단할 수 있는 가장 확실한 방법이지만, 감사가 이루어질 때마다 매번 모든 데이터를 검사해야 하며, 관리자의 역량에 않은 부분을 의존하였다. 이는 최대한 빠른 대응을 요하는 침입 복구 시스템에 적합하지 않다. 또한 손상 자원의 복구에 필요한 자원의 상태 정보는 수집 가능하지만, 침입을 차단하기 위해서 침입 행위 주체에 대한 정보는 수집할 수 없다. 위의 두가지 문제를 해결하기 위해 파일 무결성 검사와 시스템 호출 감시 기법을 연동한다. 시스템 호출 강시를 통해서 자원에 대한 침입 행위 주체의 정보를 수집하고 파일 무결성 검사를 하여, 침입 차단 및 복구를 위한 감사 자료를 수집한다. 또한 보다 효과적으로 침입을 탐지하고 복구하기 위하여 여러 침입 탐지 시스템과 연동하여 침입 복구 시스템을 구성할 수 있도록 탐지 메시지를 IDMEF 형식으로 보고한다.

• Journal of Korean Ophthalmic Optics Society
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• v.19 no.3
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• pp.331-337
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• 2014

Purpose: This is a comparative experimental study on the amount of phoria by the removal time of binocular fusion. In this study, three tests were used for phoria test like Howell test, Thorington test and developed 3D polarizing test. Methods: In this study, it was considered the removal time of binocular fusion for measuring phoria. The three methods were used for measuring quantity of phoria: Howell test, Thorington test and developed 3D Polarizing test. The measurements progressed quickly to avoid eye-strain. So we designed the test charts for marking 3D display modules and the apparatus inserted lenses, like Maddox lens and prism, which are compatible with three phoria tests. The phoria at the moment separation was measured when the binocular fusion was broken through the apparatus and the that at the stable separation was measured when activity of the separated two images like indicated box and figure on horizontal axis stopped. Results: There were statistically significant difference between quantity of phoria at moment separation and that at stable separation. Amount of phoria at moment separation was relatively larger than amount of that at stable separation. In result in exophoria, the quantity of phoria at moment separation was higher than that at stable separation, and in phoria measured by developed 3D polarizing test, it shows the similar results at two condition. Conclusions: For exophoria, the amount of phoria at moment separation of binocular fusion was relatively larger than that at stable separation. The amount of difference between phoria values at moment separation and that at stable separation was alike among three phoria tests. Usually in working, there is no distinction between moment separation and stable separation. But there were definitely the difference between two ways to separate binocular fusion. Therefore, it is need for writing on prescription test name for measuring phoria and condition of separation of binocular fusion.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.8
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• pp.3587-3593
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• 2011

This study was to investigate the balancing and clinical abilities using stable and unstable surface of stroke patients who surface changes in balance of body. The subjects of this study were 30 stroke patients(16 males and 14 females). They were separated into two groups and did balance reinforcing exercise on stable and unstable surfaces for five times a week for six weeks. To evaluate their balancing ability, they performed functional standing balance test, functional forward arm stretching test. performance-oriented mobility assessment was performed. The balancing exercises were modified from preceding studies and consisted of 6 difference exercises. The functional standing test with open and close eyes and performance-oriented mobility assessment, the unstable surface exercise group and the stable surface exercise group improved significantly. The forward arm stretching test was the unstable surface exercise group improved. This study found that the balancing exercise on unstable surface was more effective than on stable surface for stroke patients. Thus, exercise on unstable surface has more positive effects on the improvement of balancing abilities of stroke patients.

• Journal of the Korean Society of Radiology
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• v.13 no.1
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• pp.1-8
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• 2019

The purpose of this study is to evaluate usefulness of aid table in ERCP operation. Fifteen patients (mean age: $76.0{\pm}11.4$) and Six Staffs are took part in the questionnaire survey. We evaluated usefulness of aid table as follows: comfortableness, psychological stability, satisfaction from extreme satisfaction as 1 point to extreme satisfaction as 5 point by questionnaire. In the results of comfortableness, the patients reported uncomfortable as $1.7{\pm}0.5$ point at ERCP operation without aid table but they are reported comfortable at using aid table as $4.4{\pm}0.5$ point (p-value${\leq}0.000$). In the psychological stability, the patients have satisfaction ($4.8{\pm}0.4$ point) for aid table. In the addition, the patients felt satisfaction ($4.9{\pm}0.3$ point) for aid table. These results are considered that to use of aid table will give a useful to ERCP operation.

• Journal of the Korean Society for Nondestructive Testing
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• v.34 no.4
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• pp.311-317
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• 2014

The Pressurized water reactor owners group (PWROG) developed and applied a risk-informed in-service inspection (RI-ISI) program, as an alternative to the existing ASME Section XI' sampling inspection method. The RI-ISI programs enhance overall safety by focusing inspections of piping at high safety significance (HSS) locations where failure mechanisms are likely to be present. Additionally, the RI-ISI program can reduce nondestructive evaluation (NDE) exams, man-rem exposure for inspectors, and inspection time, among other benefits. The RI-ISI method of in-service piping inspection was applied to 3 units (KSNPs: Korea standard nuclear power plants) and is being deployed to the other units. In this paper, the results of RI-ISI for a Framatome type (France CPI) nuclear power plant are presented. It was concluded that application of RI-ISI to the plant could enhance and maintain plant safety, as well as provide the benefits of greater reliability.

• The Korean Journal of Nuclear Medicine Technology
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• v.14 no.2
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• pp.45-49
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• 2010

Purpose: Several radiopharmaceuticals were used for cisternography. But recently, due to more short acquisition time, high resolution than other radiopharmaceuticals like In-111 DTPA, we were using Tc-99m DTPA in cisternography. Using of Tc-99m DTPA for intrathecal, was not officially recognised by the FDA. And there are matters of aseptic meningitis, muscular tetany, seizures by inappropriate radiopharmaceuticals handling. So, it is necessary to prevent adverse reactions while handling the radiopharmaceuticals using in cisternography. Therefore, this study aims to evaluation of usefulness and procedures for safety of radiopharmaceuticals in cisternography. Materials and Methods: Subjects were 12radioactive tracer vials using in cisternography in 2008 Dec. 16 - 2009 Dec. 30. (1) Radioactive tracer Vial test - We were measured NaPertechnetate radiation dose and volume, normal saline volume for dilution, source volume and dose activity for patient injection. And then, calculated mass of pure DTPA. (2) Bacterial endotoxin test - We performed pyrogen test using by negative/positive control vials which was added normal saline 0.2 mL and added normal saline 0.1 mL, Tc-99m DTPA 0.1 mL in test control vial. And then, reacted by digital hot plate in $37.5^{\circ}C$ for 1 hour and compared of gel-clot in each control vials. (3) Compliance safety procedure - We were checked safety issues and wrote out a safety procedure exam sheet. Results: (1) Radioactive tracer Vial test - Mass of DTPA per dose for patient injection (mg) was 0.88 (mg) on average, and Mass of DTPA per volume for patient injection (mg) was 0.74 (mg) on average. (2) Bacterial endotoxin test - All control test vials showed negative reactions. (3) Compliance safety procedure - We were checked safety issues and wrote out a safety exam sheet in all the exams. So, there were no adverse reactions. Conclusion: We could examine easier to safety tests using by Techscan - DTPA (Mallinckrodt): CaNa3. Each test results were passed the safety tests and there are no adverse reactions. The use of Tc-99m DTPA for cisternography, always has been become an issue. Since it has occur adverse reaction while examine the cisternography using by Tc-99m DTPA, it needs to set up the 'Standard Operating procedures'.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.788-791
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• 2010

본 논문에서는 자동차 핵심부품 중 하나인 알터네이터 수풀의 육안검사를 대체하기 위한 머신비전시스템을 설계하는 데 목적이 있다. 플라스틱 사출물인 알터네이터 스풀의 경우 일반적으로 미성형, 찍힘, 뜯김, 크랙 등의 불량 유형이 발생한다. 스풀을 고속으로 전수검사하기 위하여 설계의 실패 사례를 예로 들었고, 이를 통해 최적의 고속 자동화 머신비전 시스템을 설계하고자 한다. 3차원 설계 소프트웨어인 Pro-Engineer와 CATIA가 사용되었다. 개발 제작 될 시스템은 산업현장에 적용하여 절대적 판정의 안정성을 도모하고, 생산성 향상 및 부품의 표준화를 확립하는 데 기여할 수 있다.

• Applied Biological Chemistry
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• v.33 no.1
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• pp.43-51
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• 1990

Meat emulsions containing 0, 15, 30 and 45% of soy protein isolate(SPI), Na-caseinate(Na-CN) and their mixtures were prepared in order to determine the effect of these non-meat proteins on the physical properties and their sensory quality in emulsion type sausage. It was found that SPI was better fat stabilizer and better binder than Na-CN. The mixtures of SPI and Na-CN didn't exert any significant effect on emulsion stability. From the texture profile analysis by using Instron two-cycle compression tests, decrease in the substitution levels and increase in the ratio of SPI/Na-CN resulted in a significant increase in the textural values of hardness, adhesiveness, gumminess, chewiness. The finished products showed that the substituted product for 15 % meat protein had higher textural values than the unsubstituted product. The sensory quality evaluated for the final products showed no significant difference between the SPI substituted product for 15 % meat protein and the unsubstituted product. However, all of the substituted products for 15 % meat protein and some of those for 30 % substitution with SPI and 67 % SPI received higher scores than average.

• Korean Chemical Engineering Research
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• v.49 no.4
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• pp.387-392
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• 2011

Enzymes are being used in various fields due to their unique property of substrate specificity. Enzyme-linked immunosorbent assay(ELISA) has enabled the detection of various antigens by reporting the binding event of antigen and antibody via enzyme-catalyzed reaction. However, the sensitivity improvement of conventional ELISA has been limited because only one enzyme molecule is conjugated to one molecule of antibody. To overcome this limitation and further improve the sensitivity of ELISA, there have been efforts to increase the number ratio of enzymes to antibody. Recently, the nanobiocatalytic approaches, with their successful enzyme stabilization, improved the performance stability as well as sensitivity in a modified protocol of ELISA. The present paper introduces the basic principle of ELISA, and the recent efforts to improve sensitivity and performance stability of ELISA by using the nanobiocatalytic approaches.

• Journal of the Korean Arthroscopy Society
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• v.13 no.1
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• pp.1-7
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• 2009

Purpose: To evaluate the 2 to 4-year follow-up results after arthroscopic anterior cruciate ligament (ACL) reconstruction using transtibial femoral tunnel at 10 or 2 O'clock position. Materials and Methods: Eighty-six ACL reconstructions could be evaluated. Evaluations included 2000 International Knee Documentation Committee (IKDC) subjective knee score, Lachman test, Pivot-shift test, KT-1000 arthrometer measurement, 2000 IKDC knee examination and second-look arthroscopy. Results: Seventy-five patients (87.2%) had over 80 in 2000 IKDC subjective knee score. Eighty-three patients (96.5%) had 1+firm end or negative Lachmann test. Seventy-eight patients (90.7%) had a negative Pivot-shift test. Eighty-three patients (96.5%) had less than 5 mm difference by KT-1000 arthrometer. Eighty patients (93.0%) were normal or nearly normal by 2000 IKDC knee examination. Second-look arthroscopy was done in fifteen cases. Nine cases showed good synovialization, four cases showed partial synovialization, two cases showed poor synovialization and graft failure was noted in one case. Conclusion: ACL reconstruction using transtibial femoral tunnel at 10 or 2 O'clock position resulted in a good outcome in terms of rotatory stability as well as antero-posterior stability.