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2022년 7월 21일부터 시행된「수산부산물 재활용 촉진에 관한 법률(이하, 수산부산물법)」은 수산부산물을 친환경적· 위생적으로 처리하고, 재활용을 촉진함으로써 수산 자원을 효율적으로 이용하기 위하여 제정되었다. 그리고 「수산부산 물의 배출량 산정 방법과 이물질 등의 제거기준 고시」에서는 수산부산물 분리배출의무자에게 수산부산물에 붙어 있는 잔존 육질 등의 이물질 함유량을 3% 이하(무게기준)로 배출하도록 하고 있으나, 구체적인 이물질 함유량 시험법의 부재 로 현장에서는 혼란스러워하는 실정이다. 이에 본 연구에서는 다양한 분야의 유사 시험법을 검토 후 이들 부산물(껍데기) 의 이물질 함유량 시험방법을 제안하고자 하였다. 본 연구에서는 대상 이물질의 종류 또는 범위, 채취하는 시료 수와 양, 시료채취방법, 건조 등 전처리 방법, 분석방법, 이물질 함유량의 계산방법 등을 제안하였다.

「The Act on Promotion of Recycling of Fishery By-Products」, which came into effect on July 21, 2022, was enacted to efficiently use fishery resources by processing fishery by-products in an eco-friendly and hygienic manner and promoting recycling. And, the「Notice on Methods for Determining Emission of Fishery By-products and Standards for Removal of Foreign Substances, etc.」requires those the responsibility for separate discharge of fishery by-products below 3% or less of the content of foreign substances. However, there is confusion in the field due to the lack of content testing methods. Accordingly, this study reviewed similar test methods in various fields and proposed a test method for the foreign matter content of these by-products (i.e. shells). In this study, the test method for shellfish by-products includes the type or range of target foreign substances, the number and amount of samples, the sampling method, pretreatment methods such as drying, analysis methods, and calculation methods for foreign matter content.

본 연구에서는 「수산부산물법」에서 규정하고 있는 이물질 함유량을 산정할 때 필요한 강열에 의한 껍데기 자체 구성분의 감량(K), 육안 선별 이물질과 강열감량에 의한 유기성 이물질을 구한 후 산정식에 의하여 이물질 함유량을 구하였다. 특히 K 값을 구할 때 강열 온도의 영향, 최종 이물질 함유량을 구 할 때 굴 껍데기의 적치 기간에 따른 영향 등에 관하여 검토를 수행하였다. 강열온도에 따른 강열감량 시험 결과, 강열온도가 높아질수록 이물질로서 함유 된 유기성분 뿐만 아니라 껍데기 자체 구성분의 감량도 증가함을 확인하였다. 그리고 K 값을 구하기 위한 20회 반복 실험 결과, K 값을 4.00%로 제안하였 다. 적치 기간에 따른 굴 껍데기에서의 이물질 함유량은 적치 기간이 긴 시료가 적치 기간이 짧은 시료보다 낮아 배출기준을 만족하는 것으로 나타났다. 따 라서 굴 껍데기의 배출기준을 만족시키기 위해서는 굴 수확 후 2~3개월 정도의 안정화 시간이 필요함을 알 수 있었다.

In this study, the total foreign matter content stipulated in the 「Fisheries By-Products Act」 was determined using the loss of the shell's own components by ignition (K), hand-picked foreign matter, and organic foreign matter by ignition loss. In particular, a review was conducted on the influence of ignition temperature when calculating the K value and the influence of the storage period of oyster shells when calculating the final foreign matter content. As a result of the loss on ignition test according to the ignition temperature, it was confirmed that the higher the ignition temperature, the greater the loss of not only the organic components contained as foreign matter but also the components of the shell itself. And as a result of 20 repeated experiments to obtain the K value, the K value was suggested to be 4.00%. The content of foreign matter in oyster shells according to the storage period was lower in samples with a longer period than in samples with a short period, indicating that storage period has a significant impact on removal of organic foreign matter. Therefore, it was found that in order to meet the discharge regulation standards for oyster shells, a storage period for stabilization of about 2 to 3 months is needed after the oyster harvest.

전세계적으로 재난에 의한 피해가 급증하면서 인명피해를 줄이기 위한 장비에 대한 기술개발이 필요한 실정이다. 이에 소방안전 및 119구조․구급기술연구개발사업의 지원으로 “인명구조용 소방대원 근력지원장치 개발(2015 ~ 2018)” 과제를 통하여 재난환경 및 재난 대응 시나리오를 고려한 리프팅 성능(양중하중 100 kg 이상, 양중높이 1 m 이상, 양중거리 60 cm 이상, 양중속도 0.2 m/s 이상)을 만족하는 장비를 개발 중에 있다. 본 연구는 장치의 유용성을 판단하기 위해 양중성능 및 내환경 시험법을 제안하였고, 양중성능시험의 동역학 해석을 통해 근력지원장치의 상세사양을 분석 및 검증하였다. 본 연구를 통하여 제안한 시험 방법은 근력지원장치의 안정적인 성능 구현여부를 평가하는데 실용적으로 적용할 수 있을 것으로 판단된다.

As the damage caused by disasters increases rapidly around the world, it is necessary to develop the technology for equipment to reduce human injury. Therefore in the support of fire safety and 119 rescue and rescue technology research and development project, in the "Development of a power assist device for a fireman to rescue humans(2015 ~ 2018)" for life saving restoration, we are developing equipment that satisfies the lifting performance considering the disaster environment and the disaster response scenario(Amount of load over 100 kg, height of over 1 m, height over middle 60 cm, speed over 0.2 m/s). In this study, we propose a lifting performance and environmental test method to evaluate the usefulness of the power-assisted device and analyze and verify detailed specifications of the device through dynamics analysis of the lifting performance test. This study suggests that the proposed test method can be applied practically to evaluate whether a stable performance of a power-assisted device is achieved.

The biopharmaceutical drugs which are produced by recombinant DNA technology or new biotechnology and used for the treatment of human diseases have developed since 1980s, and successfully introduced in drug market. Some of them became blockbuster drugs and have entered in the category of major drugs having a grand market size. In this study, the registry of the biopharmaceutical drugs in official compendium including Korean Pharmacopoeia was investigated by comparing foreign pharmacopoeias such as US Pharmacopoeia, European Pharmacopoeia and Japanese Pharmacopoeia. In Korea, biologic drugs have been regulated by the official notification[The Criteria and Test of Biologics\, and the recombinant pharmaceuticals has been also regulated in this notification. However, the market expansion of drugs in this category requires the official registry in the official compendium. In this article, the necessity of registration of some selected biopharmaceuticals in the official compendium is addressed, and the consideration points in general notices, general rules of preparations, general tests and general information of Korean Pharmacopoeia is suggested. In addition, the registration of biosimilar drugs in official compendium, for example in Korean Pharmaceutical Codex, is also proposed, for taking action on the market entrance of biosimilar drugs following the expiration of patent of oldest biopharmaceutical drugs. This will be helpful in more effective management and regulation of biopharmaceutical drugs and in harmonization with international requirements.

Objective To identify factors affecting test results of the quiet standing balance evaluation conducted by posturography and to investigate the standardized method by comparing results according to feet width. Method Th e study cohort consisted of 100 healthy individuals. We assessed the quiet standing balance of subjects by using 3 diff erent methods: standing on a force plate with feet width the same as shoulder width (test 1); with feet width the same as half the shoulder width (test 2); with feet width determined by the subject’s comfort (test 3). Subjects underwent each test with their eyes open and closed for 30 seconds each time. Parameters for measuring standing balance included the mean mediolateral and anteroposterior extent, speed, and the velocity moment of center of pressure (COP) movement. Results All parameters showed better results when the subject’s eyes were open rather than closed, and the mean AP extent and speed increased as the age of the subjects increased (p<0.01). However, there was no signifi cant correlation between height and the study parameters, and no differences between men and women. Mean mediolateral extent and speed were signifi cantly longer and faster in test 1 compared with tests 2 and 3 (p<0.01). Th e results of test 2 were better than the results of test 3, but the diff erence was not statistically signifi cant. Conclusion COP movements increased with age and when subjects closed their eyes in an evaluation of quiet standing balance conducted by posturography. Gender and height did not aff ect results of the test. We suggest that an appropriate method for conducting posturography is to have the subject stand on a force plate with their feet width the same as half the shoulder width, because this posture provided relatively accurate balance capacity.

항공교통관제사와 조종사 사이의 의사소통은 항공기 운항 안전에 있어서 매우 중요한 요소이다. 국제민간항공기구(ICAO)는 민간항공운송산업의 발전과 안전 도모를 위해 조종사 영어자격능력 시험을 의무사항으로 규정하고 있다. 왜냐하면 조종사의 우수한 의사소통능력은 비상상황 또는 비정상상황을 즉각적으로 대응할 수 있는 매우 필수적인 능력들 중 하나이기 때문이다. 대한민국 국토교통부는 2006년부터 ICAO EPTA 시험을 민간항공운송에서 조종사 의무자격시험으로 법적으로 규정하고 산하기관인 교통안전공단을 통해 시험을 주관하고 있다. 본 연구는 EPTA 시험에 응시하는 응시자의 시험에 대한 신뢰성을 증진시키고 시험제도의 발전방안을 모색하고자 하였다. 이를 위해 본 연구는 첫째, EPTA 시험제도와 관련한 이론적 배경을 고찰하였다. 둘째, EPTA 시험제도의 국내에서 정착 및 발전과정을 살펴보았다. 셋째, EPTA 시험제도의 신뢰성증진 및 발전방안 모색을 위해 총 15명의 항공전문가들을 대상으로 질적 연구를 수행하였다. 본론의 질적연구를 통해 연구자들은 국외 ICAO 공식 인증 EPTA 시험결과와 국내 교통안전공단이 주관하는 EPTA 시험결과를 바탕으로 교차응시에 따른 EPTA 등급을 비교·분석할 수 있었으며 시험응시자들에 대한 인터뷰를 통해 국내 EPTA 시험 발전을 위한 개선방안을 도출하였다.

The study on the tire noise due to the On-Board Sound Intensity test method. The object of this project is to prepare the countermeasure of the noise reduction according to collect tire/road noise data under various influencing factors by using On-Board Sound Intensity test method. To accomplish the object ; A automotive is used as a test platform to test tire/road noise by changing different types of tires and using On-Board Sound Intensity test system. The influence of inflation pressure, road, load, speed and pattern type on tire/road noise is compared and analyzed. At the same time, the mechanism of tire/road noise is analyzed, which provides a experimental basis for tire noise reduction.

One of the major applications of REBCO coated conductor (CC) tapes is in superconducting magnets or coils that are designed for high magnet fields. For such applications, the CC tapes were exposed to a high level of stresses which includes uniaxial tensile or transverse compressive stresses resulting from a large magnetic field. Thus, CC tapes should endure such mechanical load or deformation that can influence their electromechanical performance during manufacturing, cool-down, and operation. It has been reported that the main cause of critical current (Ic) degradation in CC tapes utilized in coil windings for superconducting magnets was the delamination due to transversely applied stresses. In most high-magnetic-field applications, the operating limits of the CC tapes will likely be imposed by the electromechanical properties together with its Ic dependence on temperature and magnetic field. In this study, we examined the influence of the transverse compressive stress on the Ic degradation behaviors in various commercially available CC tapes which is important for magnet design Four differently processed REBCO CC tapes were adopted to examine their Ic degradation behaviors under transverse compression using an anvil test method and a newly developed instantaneous Ic measurement system. As a result, all REBCO CC tapes adopted showed robustness against transverse compressive stresses for REBCO coils, notably at transverse compressive stresses until 250 MPa. When the applied stress further increased, different Ic degradation behaviors were observed depending on the sample. Among them, the one that was fabricated by the IBAD/MOCVD process showed the highest compressive stress tolerance.

Game development costs a lot of money. Thus, in terms of cost-saving, game companies produce prototypes and undergo several tests and modifications during the development period. In this paper, we proposed a brainwave signal analysis system and linked it with the game to measure the player's emotion through brainwave analysis experiment and tried to solve these problems. The brainwave signal analysis system proposed in this paper is capable of various applications according to various development situations, such as the progress of the game, events, etc. in obtaining simple figures over time by linking games, and collecting the tester's responses according to development intentions, so there will have to be continuous additional research.

Background: For a verification of newly-developed neutron absorbers, one of guidelines on the qualification and acceptance of neutron absorbers is the neutron attenuation test. However, this approach can cause a problem for the qualifications that it cannot distinguish how the neutron attenuates from materials. Materials and Methods: In this study, an estimation method of neutron absorption performances for materials is proposed to detect both direct penetration and back-scattering neutrons. For the verification of the proposed method, MCNP simulations with the experimental system designed in this study were pursued using the polyethylene, iron, normal glass and the vitrified form. Results and Discussion: The results show that it can easily test neutron absorption ability using single absorber model. Also, from simulation results of single absorber and double absorbers model, it is verified that the proposed method can evaluate not only the direct thermal neutrons passing through materials, but also the scattered neutrons reflected to the materials. Therefore, the neutron absorption performances can be accurately estimated using the proposed method comparing with the conventional neutron attenuation test. Conclusion: It is expected that the proposed method can contribute to increase the reliability of the performance of neutron absorbers.

학교 실내공기질 측정에 적용되고 있는 현장직독식 방법과 공정시험기준을 적용하여 실제 학교 3개 교실에서 PM10, PM2.5, 이산화탄소, 폼알데하이드를 측정하고 그 결과를 비교하였다. 이산화탄소의 경우 두 방법에 의한 측정결과가 유사 하였으나 미세먼지와 폼알데하이드에서는 현장직독식 방법의 결과가 공정시험기준에 따른 결과와 차이를 나타내었다. 따라서 현장직독식 측정은 학교에서 자체 수행하는 주기적인 환경관리에 활용하고, 높은 신뢰성이 요구되는 법적 기준 충족 여부에 대해서는 공정시험기준에 따른 측정이 바람직하다고 판단된다.

In order to confirm the validity of the on-site direct-reading method (OSDR) for measuring indoor air quality in school, we evaluated PM10, PM2.5, carbon dioxide, and formaldehyde in three classrooms using two OSDR equipments and Korean standard method for indoor air quality test (SM), and compared the results. For the carbon dioxide concentration, similar results to SM could be obtained with OSDR. However, the concentrations of fine particulate matters and formaldehyde determined by an OSDR equipment showed a significant difference from the results of SM. Therefore, it is desirable to use some OSDR only for routinely checking the indoor environment of school, and measurement by SM is required for regular inspection.

본 논문에서는 MIL-HDBK-344A 기반의 ESS(environmental stress screening) 시험 에 대해 소개하고, 유도탄 내부 케이블의 ESS 시험에 대한 목적과 규격 설정 및 시험 방안에 대하여 확인하였다. ESS 시험구성은 온도 순환과 랜덤 진동의 환경 자극으로 이루어져 있으며, 핸드북의 절차를 기반으로 유도탄 내부 케이블의 ESS 시험 규격 설정과 시험 구성을 제시하고, 진동 시험을 위한 유도탄 내부 케이블의 ESS 시험을 위한 치구를 제작하였다. 스크린 강도(SS; screening strength)를 통해 결정되는 결함 감지 확률은 일회성으로 사용되는 유도탄의 신뢰성에 부합되도록 선정하였고, 또한 ESS 시험 중 유도탄 내부 케이블의 검사방법과 고려해야 할 점에 대하여 소개하였다.

In this paper, the ESS test based on the MIL-HDBK-344A is introduced, and the purpose of the ESS test of the guided missile internal cable, and the specification and test method are confirmed. The ESS test configuration consists of environmental stimulation of temperature circulation and random vibration. Based on the procedure in the handbook, the ESS test specification setting and test configuration of the guided missile internal cable are presented, and the jig for the ESS test of the guided missile internal cable for the vibration test was produced. The probability of detecting a defect determined through the screening strength(SS) was set to match the reliability of a one-time guided missile, and also introduced the inspection method and considerations for the cable inside the guided missile during the ESS test.

항공 우주 산업의 발전으로 발사체의 연구가 많아지고 있다. 더불어 많은 시험이 진행하고 있고 그에 따라 많은 실패도 발생한다. 발사체는 다른 전자장비보다 위험성이 높기 때문에 실패를 최소화할 수 있어야 한다. 따라서 발사체에 전원을 공급하기 전에 배선을 검증할 필요가 있다. 이에 따라 저항 측정을 통해 배선 상태를 검증하였다. 하지만 이전의 저항측정 방식의 배선 점검은 발사체 회로의 커패시터, 인덕터등의 소자들 때문에 정확한 측정을 할 수 없다. 본 논문에서는 TDR 미터를 이용하여 케이블 및 발사체의 연결 상태에서 임피던스를 측정한다. 측정한 정상상태의 임피던스의 기준 값을 설정하기 위해 Z-Segmentation 알고리즘을 사용한다. Z-Segmentation 알고리즘은 우선 임피던스 파형의 피크 값들을 칼만 필터를 이용하여 찾고 찾은 피크값을 Segmentation을 통해 최종 impedance peak segment를 얻는다. 이런 방법으로 배선의 정상 상태에 대한 기준 값으로 설정하고 이를 기준으로 배선 상태를 판정한다.

development of the aerospace industry is increasing the research of projectiles. In addition, many tests are under way and many failures occur accordingly. Projectiles should be able to minimize failures because they are more dangerous than other electronic equipment. Therefore, it is necessary to verify wiring before powering the projectile. Accordingly, the wiring status was verified by resistance measurements. However, the wiring test of the previous resistance measurement method cannot be accurately measured due to devices such as capacitors and inductors in the projectile circuit. In this paper, impedance is measured in the connection state of cables and projectiles using a TDR meter. The Z-Segmentation algorithm is used to set the reference value for the measured steady state impedance. The Z-Segmentation algorithm first finds the peak values of the impedance waveform using a Kalman filter and obtains the final impedance peak segment through segmentation. In this way, the wiring status is determined based on the reference value for the normal state of the wiring.

유선 네트워크를 구성하는 스위치나 라우터 또는 통합망에 대한 성능 시험방법론에 대해서는 아직 명확히 정의 되어 있지 않다. 스마트 폰과 멀티미디어 트래픽으로 인해 네트워크의 속도는 100Gbps까지 빠르게 증가하고 있다. 그러나, 정형화된 시험 방법이 없고 성능 시험 관련 부분은 아직도 옛날 자료를 기반으로 시험을 수행하고 있다. 통신사업자나 기업에서는 요구사항에 대한 시험을 자체 BMT(Benchmark Test)로 진행하고 있으며, 정부 또는 공공기관에서는 외부 기관에 성능 시험을 의뢰하고 있다. 차세대 네트워크 장비를 포함한 단위장비 및 통합망에 대한 성능 시험 수요가 증가함에 따라 성능 시험 방법에 대한 분석이 조속히 이루어져야 한다. 따라서 본 논문에서는 기관에서 수행하는 성능 시험 방법을 분석하고 모든 유선 네트워크 장비에 적용할 수 있는 가이드라인을 제시하고자 한다.

The performance test methodology for switch, router or integrated networks that make up the wired network is not clearly defined. Due to smart phones and multimedia traffic, the speed of the network is rapidly increasing to 100Gbps. However, there is no formalized test method, and performance test related parts are still being tested based on old data. Telecommunication companies and companies are testing their requirements in their own BMT, and government or public institutions are requesting performance tests from external organizations. As the demand for the performance test of next generation network equipments and the integrated network increases, analysis of the performance test method should be done as soon as possible. Therefore, in this paper, we analyze the performance test method performed by the institute and propose guidelines that can be applied to all wired network equipment.

RILEM에서는 콘크리트의 파괴에너지를 결정하기 위하여 3점휨시험 방법을 제시하였으나, 콘크리트의 자중의 영향으로 인하여 이론치와 실험치가 잘 일치하지 않는 경향이 있다. 본 연구에서는 콘크리트의 자중의 영향을 고려하기 위하여 완전탄성체지지대로서 proving ring을 이용한 4점휨시험을 제시하였으며, 인조균열길이의 변화에 따른 콘크리트의 파괴에너지 변화를 알아보기 위하여 보의 높이에 대한 인조균열길이의 비를 0.2부터 0.6까지 변화시켜 실험을 실시하였다. 본 연구에서 제안된 4점휨 시험을 통하여 콘크리트의 파괴거동을 보다 쉽게 파악할 수 있었으며, 4점휨시험이 3점휨시험 보다 파괴역학이론에 잘 들어맞는 것을 알 수 있었다.

RILEM proposed three point bend test to determine the fracture energy of concrete, but there is discrepancy between the theoritical and the experimental fracture energy of concrete by the influence of self-weight of concrete. This paper presents four point bend test using proving ring in order to take into account the influence of self-weight of concrete. The initial notch to beam depth ratio was varied from 0.2 to 0.6 in order to investigate the variation of fracture energy of concrete according to the variation of initial notch depth. The proposed four point bend test using proving ring was verified to be superior to three point bend test.

본 논문에서는 GNSS 무결성을 위한 MQM 단계에서 ARS test의 적용 가능성을 분석하였다. ARS test는 관측치 내 가속도, 속도, 스텝형 이상을 탐지하도록 설계되어 있으며, 이를 통해 측정치의 신뢰성을 위협하는 이상 신호를 조기에 검출할 수 있다. 성능 평가를 위해 두 가지 실험을 수행하였다. 첫째, 모의 데이터를 이용하여 다양한 유형의 의도적 오차를 주입하고 이에 따른 검출 정확도를 분석하였다. 둘째, 실제 수집된 GNSS 데이터를 대상으로 알고리즘을 적용하여 실제 환경에서 ARS test의 적용 가능성과 앙각별 결과를 분석하였다. 분석 결과 ARS test는 각각의 오차 성분을 성공적으로 탐지할 수 있었으며, 임계값은 앙각, 시스템 및 주파수 별로 다르게 적용하여야 한다는 결과를 도출하였다. 이러한 결과를 통해 MQM 설계시 ARS test의 적용 가능성을 확인할 수 있었다.

This paper analyzes the applicability of the ARS test in the MQM (Monitoring Quality Metric) stage for GNSS integrity monitoring. The ARS test is designed to detect acceleration, velocity, and step-type anomalies in observations, enabling early identification of abnormal signals that may affect measurement reliability. Two experiments were conducted: first, simulated data with intentional errors were used to assess detection accuracy; second, real GNSS data were analyzed to evaluate practical applicability and elevation-angle-dependent performance. The results show that the ARS test effectively detects various error components and that detection thresholds should be adapted by elevation angle, system, and frequency. These findings confirm the feasibility of applying the ARS test to MQM design for GNSS integrity.

PURPOSES : This study aims to develop a strength test method for irregularly shaped concrete block paver. METHODS : Ten (10) different types of concrete block pavers including porous and dense blocks were tested for strength capacities. Destructive and non-destructive methods were used to develop a strength test method for irregularly shaped concrete block paver. The flexural strength evaluation was conducted in accordance to KS F 4419, while compressive strength was conducted with a 45.7mm-diameter core specimen. The impact echo test method was used to evaluate the elastic modulus. Finally, regression analysis was used to investigate the relationship between flexural strength, compressive strength and elastic modulus based on their corresponding test results. RESULTS : The flexural strength of the tested block pavers ranged from 4MPa to 10MPa. At 95% confidence level, the coefficients of determination between compressive-flexural strength relationship and compressive strength-elastic modulus relationship were 0.94 and 0.84, respectively. These coefficients signified high correlation. CONCLUSIONS : Using the test method proposed in this study, it will be easier to evaluate the strength of irregularly shaped concrete block pavers through impact echo test and compressive test, instead of the flexural test. Relative to the flexural strength requirement of 5MPa, the minimum values of compressive strength and elastic modulus, as proposed, are 13.0MPa and 25.0GPa, respectively.

디지털 제어기 적용의 확대로 원자력 시설에 대한 사이버보안 이슈가 대두되었다. 이에 대처하기 위해 공표된 국내 원자력 시설에 대한 사이버보안 기술기준 RS-015에서는 원자력 시스템 개발자에게 보안 기능의 적용과 아울러 알려진 취약점 분석, 보안 기능에 대한 시험 및 평가를 요구하고 있다. 이를 위해서는 원자력 사이버보안 기술기준에 따른 보안 기능 적합성 시험 절차 및 방법 개발이 필요하다. 본 연구에서는 RS-015의 기술적, 운영적, 관리적 보안조치에 대한 세부항목을 분류하여 기기 수준에서 요구되는 보안 요건을 도출하고 기기에 구현되는 보안 기능이 보안 요건을 만족하는지를 시험하는 절차와 방법을 개발하였다. 본 논문에서는 보안 기능 적합성 시험 절차 및 방법 개발을 위한 과정을 설명하고 개발된 시험사례를 제시한다.

The expanded application of digital controls has raised the issue of cyber security for nuclear facilities. To cope with this, the cyber security technical standard RS-015 for Korean nuclear facilities requires nuclear system developers to apply security functions, analyze known vulnerabilities, and test and evaluate security functions. This requires the development of procedures and methods for testing the suitability of security functions in accordance with the nuclear cyber security technical standards. This study derived the security requirements required at the device level by classifying the details of the technical, operational and administrative security controls of RS-015 and developed procedures and methods to test whether the security functions implemented in the device meet the security requirements. This paper describes the process for developing security function compliance test procedures and methods and presents the developed test cases.

This study deals with a basic proposal to prove the safety for the exhausted fittings of the hydrogen fuel cell vehicle. First, this study was approached to numerical analysis solving to close the exact boundary condition (Axial, Bending, Lateral) and the second, this study produced the Lateral movement equipment for the vibration. For the numerical analysis, This study was considered with the exact solution of Lateral movement and the resonance effect for durability sample according to fitting positions. The second, This study was made for special equipment for displacement/gas leak and the frequency because the domestic samples were comparing with foreign fitting and foreign fitting for the hydrogen fuel cell vehicle. The result of this study was satisfied with domestic fittings for the basic reference but it need more test because of other situation for hydrogen fuel cell vehicle.

본 연구는 실험방법이 간단하고 분석비용이 저렴하며, 단시간내에 세균수를 측정할 수 있는 현장적용 가능한 방법을 확립하기 위하여 냉장우육의 총균수를 표준평판배양법과 배양온도를 25℃, 30℃, 35℃ 별로 레자주린 환원색과 환원시간을 측정하여 상관관계를 산출하였다.연구결과를 보면, 총균수(25℃/72시간, Y)와 레자주린 환원시간(X)과의 상관계수는 RRT (Resazurin reduction test) 배양온도가 25℃와 30℃, 환원색은 청색에서 분홍색으로 변할 때가 각각 -0.95와 -0.94로서 가장 높았다. 상관계수와 환원시간을 감안할 때 RRT 배양온도는 30℃가 적합하였으며, 이때 회귀방정식은 Y = -0.4386X+7.7870이었으며, 돼지고기의 총균수가 102, 103, 104cfu/cm2일 경우 검사시간은 13.2시간, 10.9시간, 8.6시간이었다. 총균수(30℃/72시간, Y)와 레자주린 환원시간(X)과의 상관계수는 RRT 배양온도가 30℃, 환원색은 청색에서 분홍색으로 변할 때가 -0.93으로서 가장 높았다. 이때 회귀방정식은 Y=-0.4171X+7.5540이었으며, 돼지고기의 총균수가 102, 103, 104 cfu/cm2일 경우 검사시간은 13.3시간, 10.9시간, 8.5시간이었다. 총균수(35℃/48시간, Y)와 레자주린 환원시간(X)과의 상관계수는 RRT 배양온도가 30℃, 환원색은 청색에서 분홍색으로 변할 때가 -0.93으로서 가장 높았다. 이때 회귀방정식은 Y=-0.3514X + 6.7513이었으며, 돼지고기의 총균수가 102, 103, 104cfu/cm2일 경우 검사시간은 13.5시간, 10.7시간, 7.8시간이었다.

In order to search for reliable rapid methods of estimating bacterial counts in pork, this study was tried to measure resazurin reduction time which is simple in experimental method, low in analytical cost, able to estimate bacterial count within short time. The results were summarized as follows;Correlation coefficient between initial bacterial log count(25℃/72hr, Y) and resazurin reduction time(X) from blue color to pink color during incubation at 25℃ and 30℃ was higher than other conditions as -0.95 and -0.94, respectively. Considering correlation coefficient and reduction time, incubation temperature was compatible at 30℃, and regression equation(RE) was Y = -0.4386X + 7.7870. At a bacterial load of 102cfu/cm2, 103cfu/cm2 and 104cfu/cm2 in pork, reduction time was 13.2hr, 10.9hr and 8.6hr, respectively.Correlation coefficient between initial bacterial log count(30℃/72hr, Y) and resazurin reduction time(X) from blue color to pink color during incubation at 30℃ was highest among other conditions as -0.93, and RE was Y = -0.4171X + 7.5540. At a bacterial load of 102cfu/cm2, 103cfu/cm2 and 104cfu/cm2 in pork, reduction time was 13.3hr, 10.9hr and 8.5hr, respectively.Correlation coefficient between initial bacterial log count(35℃/72hr, Y) and resazurin reduction time(X) from blue color to pink color during incubation at 30℃ was highest among other conditions as -0.93, and RE was Y = -0.3514X + 6.7513. At a bacterial load of 102cfu/cm2, 103cfu/cm2 and 104cfu/cm2 in pork, reduction time was 13.5hr, 10.7hr and 7.8hr, respectively.