• 한국멀티미디어학회논문지
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• 제12권9호
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• pp.1351-1362
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• 2009

현대전에서 상호운용성의 중요성이 계속해서 증가함에 따라 한국군의 국방부에서는 상호운용성 시험 평가 도구인 SITES(Systems Interoperability Test & Evaluation System)를 개발하여 정보체계의 상호운용성 수준 평가에 활용하고 있다. SITES는 정보체계의 상호운용성 시험 평가를 목적으로 하므로, 무기체계에 적용에는 한계가 있다. 이 논문에서는 무기체계 간 상호운용성 시험을 위한 상호운용성 시험 아키텍처, 상호운용성 시험 구성 요소들을 제안한다. 또한 제안한 아키텍처 및 시험 지원 도구들의 유용성을 입증하기 위해 프로토타입을 개발하였다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2000년도 가을 학술발표회 논문집
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• pp.385-390
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• 2000

In this study, the Non-Destructive Testing Equipment was introduced for the compaction control and the evaluation of pavements properties and the developing process was showed. Falling Weight Deflectometer(FWD) is a system for performing non-destructive testing of pavement and the other foundation structures. The system develops forces from the acceleration caused by the arrest of a falling weight and these forces are transmitted onto the surface of a structure causing it to deflect much as it would due to the weight of a passing wheel load. The structure will bend downward and exhibit a deflection basin. FWD uses a set of velocity sensors to determine the amplitude and shape of the deflection basin. The deflection response, when related to the applied loading, can provide information about the strength and condition of the various elements of the test structure. In this study, a computer program was developed that can be used to evaluate pavement and foundation structures from the data produced by FWD. The Falling Weight Deflectometer, non-destructive testing equipment, is increasing used at the whole world.

• Journal of Interdisciplinary Genomics
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• 제5권2호
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• pp.18-23
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• 2023

Conventional evaluation method for identifying the organic cause of short stature has a low detection rate. If an infant who is small for gestational age manifests postnatal growth deterioration, triangular face, relative macrocephaly, and protruding forehead, a genetic testing of IGF2, H19, GRB10, MEST, CDKN1, CUL7, OBSL1, and CCDC9 should be considered to determine the presence of Silver-Russell syndrome and 3-M syndrome. If a short patient with prenatal growth failure also exhibits postnatal growth failure, microcephaly, low IGF-1 levels, sensorineural deafness, or impaired intellectual development, genetic testing of IGF1 and IGFALS should be conducted. Furthermore, genetic testing of GH1, GHRHR, HESX1, SOX3, PROP1, POU1F1, and LHX3 should be considered if patients with isolated growth hormone deficiency have short stature below -3 standard deviation score, barely detectable serum growth hormone concentration, and other deficiencies of anterior pituitary hormone. In short patients with height SDS <-3 and high growth hormone levels, genetic testing should be considered to identify GHR mutations. Lastly, when severe short patients (height z score <-3) exhibit high levels of prolactin and recurrent pulmonary infection, genetic testing should be conducted to identify STAT5B mutations.

• International Journal of Stem Cells
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• 제17권2호
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• pp.120-129
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• 2024

Recent amendments to regulatory frameworks have placed a greater emphasis on the utilization of in vitro testing platforms for preclinical drug evaluations and toxicity assessments. This requires advanced tissue models capable of accurately replicating liver functions for drug efficacy and toxicity predictions. Liver organoids, derived from human cell sources, offer promise as a reliable platform for drug evaluation. However, there is a lack of standardized quality evaluation methods, which hinders their regulatory acceptance. This paper proposes comprehensive quality standards tailored for liver organoids, addressing cell source validation, organoid generation, and functional assessment. These guidelines aim to enhance reproducibility and accuracy in toxicity testing, thereby accelerating the adoption of organoids as a reliable alternative or complementary tool to animal testing in drug development. The quality standards include criteria for size, cellular composition, gene expression, and functional assays, thus ensuring a robust hepatotoxicity testing platform.

• 대한의용생체공학회:의공학회지
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• 제33권2호
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• pp.89-97
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• 2012

The purpose of this study is to develop the guideline of the physicochemical and mechanical properties evaluation for silicone gel filled breast implants. First of all, the use and development status for silicone gel filled breast implants were investigated, and then, standard and criteria about performance evaluation established by the international organizations such as ASTM, FDA guidance and ISO were examined. To evaluate the mechanical properties, data research and testing for breaking strength, elongation, tensile set, joint intensity, silicone gel cohesion, weight loss from heating, static rupture resistance, impact resistance test, fatigue test, and gel bleed were performed. On the other hand, to evaluate the physicochemical properties, volatile matter, extent of cross linking, heavy metals, and extractable were analyzed. In this study, results for general function, mechanical properties and physicochemical properties were examined and reviewed for the accordance with international standard, and objective and standardized guideline was provided.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집A
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• pp.553-560
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• 2001

Recently, ultrasonic testing simulation has becomes very important in the field of nondestructive evaluation due to its unique capability of providing testing signals without real inspection. The ultrasonic testing simulation requires three elementary models including the transducer beam radiation model, the flaw scattering model, and the reception model. In the present work, we briefly describe an approach to develop the ultrasonic testing model together with its elementary models with the multi-gaussian beam model. Based on this approach, we developed ultrasonic testing simulation program with MATLAB. The performance of the developed program is demonstrated by the predicting of ultrasonic signals from two types of flaws, circulars crack and spheres.

• 비파괴검사학회지
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• 제22권6호
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• pp.627-636
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• 2002

Identification and sizing of surface breaking vertical cracks using angle beam ultrasonic testing in practical situation quite often become very difficult tasks due to the presence of non-relevant signals caused by geometric reflectors. The present work introduces effective and systematic approaches to take care of such a difficulty by use oi angle beam ultrasonic testing models that can predict the expected signals from various targets very accurately. Specifically, the model-based TIFD (Technique for Identification of Flaw signals using Deconvolution) is Proposed for the identification of the crack tip signals from the non-relevant geometric reflection signals. In addition, the model-based Size-Amplitude Curve is introduced for the reliable sizing of surface breaking vertical cracks.

• 한국산학기술학회논문지
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• 제21권6호
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• pp.18-27
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• 2020

본 연구는 국제표준 ISO/IEC 25023 소프트웨어 품질 특성 평가를 이용하여 ISO/IEC 17043 숙련도 시험 요구 사항을 기준으로 시험자간 숙련도 시험의 결과를 비교 분석한 연구이다. 시험 분야 신청서는 KOLAS에서 정의하는 전기 시험 분야의 소프트웨어 시험으로 한국계량측정협회에 제출을 하였다. 시험자간 숙련도 시험 평가 항목은 국제표준인 ISO/IEC 25023 SW 품질 특성 중 기능 완전성과 시간 효율성으로 선정을 하였다. 시험자간 숙련도 비교 시험은 서울 소재의 LG전자 SW공인시험소에서 2019년 5월 28일에 KOLAS 평가사가 현장에 입회하여 실시되었다. 시험 평가 방법은 기능 완전성으로 시험자 1인당 1회 측정을 하였고 시간 효율성으로 시험자 1인당 10회를 반복 측정을 하였다. 시험의 수행 결과 기능 완전성의 경우는 12개의 시험 단계를 시험자들이 모두 통과하여 만족으로 평가되었다. 시간 효율성은 10회 반복 측정한 평균 결과 시험자 1과 3은 9.45 ± 0.01 초, 시험자 2는 9.52 ± 0.0 초로 나타났으나 통계적으로 유의하게 차이가 없었다. 결론적으로 시험자들의 숙련도는 동등하였으며 해당 시험기관 시험 결과의 신뢰성을 확인할 수 있었다.

• 한국해양공학회지
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• 제24권2호
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• pp.74-81
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• 2010

Ship STEP is the international standard for the exchange of ship modeling data between heterogeneous systems. It is expected that STEP AP218 can be used for seamless data exchange between various CAD/CAM/CAE systems used in the shipbuilding design process. Although the conformance assessment for standards would maximize the performance and confidence about data exchanges, most research has been directed toward interoperability testing. ISO SC4/TC184 only provides the method for conformance testing, and it can be used with test cases on application protocols. Even though standards have been defined for conformance assessment and testing, there is no organization or association. CAD vendors have focused on interoperability testing for evaluation of the performance of their systems. In this paper, the conformance testing criteria for AP218 have been developed with abstract test cases of ship structures. The requested STEP translator was also reviewed with a developed item pool of testing criteria. The criteria methodology would be a guideline for the development of translators and interfaces. The item pool method of testing criteria for conformance assessment would increase performance and efficiency of data translators for Ship STEP and other standards.

• 항공우주시스템공학회지
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• 제10권4호
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• pp.84-89
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• 2016

전자전(EW)은 전자기 영역에서 우위를 차지하고 유지하기 위한 임무분야이다. 이러한 중요 임무를 수행하기 위해 현대 군용기에 적용되는 전자전 장비의 시험평가는 전장 환경의 요구사항을 충족하기 위해 전자전 시스템이 준비되었음을 사용자에게 보여주기 위한 폭넓은 시험 기술과 해석 기법이 요구된다. 본 논문은 전자전 장비, 특히 RWR, CMDS의 시험평가 기술을 소개하고, 초보 엔지니어 뿐 아니라 경험을 보유한 엔지니어 및 사업관리자에게 전자전 장비의 시험평가 절차와 시험 자원에 대한 참조자료로 사용될 것이다.