In this paper, the EMP-related standards and test methods used by the civilian and military have been introduced. The incoming EMP signal for seven military RF antennas which are the first to face EMP threats among military weapon systems have been also measured and analyzed. Overall, as the applied signal strength increased, the strength of the EMP signal entering in the antenna also showed an upward trend. The highest level of entering was observed at the peak value of the applied EMP signal, 50 kV/m. And at the peak value, all antennas received threatening signals. In particular, antennas in low frequency bands such as AM and FM were getting high voltage signals as high as thousands of volts. This means that the weapon systems linked to the antennas could suffer severe damage. Therefore, based on this paper, systematic research for EMP threat should be conducted to identify EMP vulnerabilities of major weapons systems and to devise practical protective measures.

The demand for LNG Carrier and LNG fuel ships are increasing due to global carbon neutrality declaration and ship emissions regulation of IMO, domestic shipyards pay technology fees(about 5~10% of ship price per vessel) to GTT company in France for making LNG cargo hold. Localization of LNG cargo hold is needed to reduce technology fees and engage technological competitiveness, it is important to secure the critical technology like automation process development of insulation system process. Especially, the automation rate of membrane-type insulation system is very low due to interference caused by corrugation and difficulty in securing optimal variable welding condition. In this study, to solve this problem, automatic welding is performed using developed automatic welding equipment on STS304L steel which is used in flat and corner area of membrane-type LNG cargo hold's lap joint. After welding, Cross-sectional observations and Tensile strength tests were conducted to evaluate reliability of equipment and welding condition. As a result of the test, it was confirmed that the strength of the welded zone exceeded that of base material, and secured the optimal welding condition to apply automatic welding.

이 연구는 중국의 이미지 처리 소프트웨어 메이투를 중심으로 하여 기 술수용이론을 적용하고 확장하여 중국 사용자들의 이미지 처리 소프트웨 어 사용 의도에 대한 가능성을 탐구하는 것이다. 이를 위해 설문조사 방 법을 사용하여 사회의 다양한 계층의 다양한 그룹을 조사하고 수집한 데 이터를 분석했다. 연구 결과는 사용자의 사용 의도에 영향을 미치는 것 으로 나타났으며, 특히 사용자의 편리성과 유용성에 더해, 호기심과 자아 형상 일치성도 메이투 사용자의 사용 의도에 긍정적인 영향을 미치는 것 으로 나타났다. 본 논문의 연구 결과는 메이투와 같은 이미지 편집 소프 트웨어의 개발과 운영에 가치 있는 통찰을 제공할 수 있다.

세계적으로 버섯에 대한 소비는 매년 증가하고 있으며 한국에서는 느타리버섯, 양송이버섯, 팽이버섯이 주로 유 통되고 있다. 하지만, 버섯의 재배와 가공 과정에서 미생 물 오염을 예방하기 위한 대안의 부재로 인하여 Listeria monocytogenes와 같은 병원성 미생물의 오염이 검출되고 있으며 버섯에 의한 식중독 및 리콜 사례가 다수 보고되 고 있다. 버섯에서 오염된 미생물을 저감화하는 방법으로 는 화학적 및 물리적 처리, 또는 이들을 결합하여 사용하는 병용처리 방법이 이용되고 있다. 화학적 처리로는 염소 혼 합물, 과산화아세트산, 4차 암모늄이온 화합물이 주로 사용 되고 있으며 오존과 전해수를 이용한 방법도 최근에 개발 되었다. 물리적 처리로는 초음파, 방사선조사, 콜드 플라즈 마 기술이 이용되고 있으며, 병용처리 방법으로는 자외선/ 염소 혼합물, 오존/유기산, 초음파/유기산 등이 연구되었다. 본 리뷰에서는 국내에서 소비되는 버섯의 종류와 그에 대한 미생물 오염도를 조사하고, 버섯에 오염된 미생물을 제 어할 수 있는 기술에 대하여 조사하여, 정리하였다.

Rapid and accurate detection of pathogenic bacteria is crucial for various applications, including public health and food safety. However, existing bacteria detection techniques have several drawbacks as they are inconvenient and require time-consuming procedures and complex machinery. Recently, the precision and versatility of CRISPR/Cas system has been leveraged to design biosensors that offer a more efficient and accurate approach to bacterial detection compared to the existing techniques. Significant research has been focused on developing biosensors based on the CRISPR/Cas system which has shown promise in efficiently detecting pathogenic bacteria or virus. In this review, we present a biosensor based on the CRISPR/Cas system that has been specifically developed to overcome these limitations and detect different pathogenic bacteria effectively including Vibrio parahaemolyticus, Salmonella, E. coli O157:H7, and Listeria monocytogenes. This biosensor takes advantage of the CRISPR/Cas system's precision and versatility for more efficiently accurately detecting bacteria compared to the previous techniques. The biosensor has potential to enhance public health and ensure food safety as the biosensor’s design can revolutionize method of detecting pathogenic bacteria. It provides a rapid and reliable method for identifying harmful bacteria and it can aid in early intervention and preventive measures, mitigating the risk of bacterial outbreaks and their associated consequences. Further research and development in this area will lead to development of even more advanced biosensors capable of detecting an even broader range of bacterial pathogens, thereby significantly benefiting various industries and helping in safeguard human health

PURPOSES : The increase in particulate matter due to increased air pollutant emissions has become a significant social issue. According to the Ministry of Environment, air pollutants emitted from large-scale businesses in 2022 increased by 12.2% compared to the previous year, indicating that air pollution is accelerating owing to excessive industrialization. In this study, TiO2, which is used to reduce airborne particulate, was used. The TiO2 coating fixation and dynamic pressure coating-type TiO2 fixation methods were used to solve the material peeling phenomenon caused by gravity, which is a limitation when the TiO2 penetration method is applied to a vertical concrete structure along the road. The long-term durability and performance were analyzed through environmental resistance and NOx removal efficiency evaluation experiments. These analyses were then assessed by comparing the NOx removal efficiency with the dynamic pressure permeationtype TiO2 fixation method used in previous studies. METHODS : To evaluate the long-term durability and performance of the TiO2 coating fixation method and dynamic pressure coating TiO2 fixation method for vertical concrete structures, specimens were manufactured based on roadside vertical concrete structures. Environmental resistance tests such as the surface peeling resistance test (ASTM C 672) and freeze-thaw resistance test (KS F 2456) were conducted to evaluate the long-term durability. To evaluate the long-term performance, the NOx removal efficiency of TiO2 concrete owing to road surface deterioration during the environmental resistance test was evaluated using the NOx removal efficiency evaluation equipment based on the ISO 22197-1 standard. This evaluation was compared and analyzed using the dynamic pressure infiltration TiO2 fixation method. RESULTS : The long-term durability of the TiO2 coating fixation and dynamic pressure coating TiO2 fixation methods were evaluated using environmental resistance tests. During the surface peeling resistance test, the TiO2 material degraded and partially detached from the concrete. However, the NOx removal efficiency was ensured by the non-deteriorated and fixed TiO2 material. The long-term performance was confirmed through a freeze-thaw resistance test to evaluate the NOx removal efficiency after 300 cycles of surface deterioration. The results showed that when the TiO2 coating fixation and dynamic pressure infiltration TiO2 fixation methods were applied to vertical concrete structures, the durability of the structure was not compromised. In comparison to the dynamic pressure infiltration TiO2 fixation method, the NOx removal efficiency observed during the surface peeling resistance test was lower, while the freeze-thaw test exhibited notably higher removal efficiency. CONCLUSIONS : To solve the material peeling phenomenon caused by gravity, the long-term durability and performance were evaluated by applying the TiO2 coating fixation and dynamic pressurized coating TiO2 fixation methods to vertical concrete specimens. Long-term durability was confirmed through environmental resistance tests, and long-term utility was secured by measuring the NOx removal efficiency according to surface degradation. These findings show that implementing the TiO2 coating fixation method and dynamic pressure coating TiO2 fixation methods on-site effectively reduce NOx.

Recently, the market competition has been fiercer due to the acceleration of technological change and the launch of intelligent products. In this situation, technology cooperation activities through networks rather than independent technological innovation activities of a single company or institution are recognized as a crucial strategy to gain competitiveness. Technology cooperation can take various forms depending on the target technology, and researchers have conducted performance analyses of technology cooperation types. However, there have not been data-based quantitative studies on the types and trends of technology cooperation for the target technology. In this paper, we explored the difference between the technology cooperation types by technology and time using the formal concept analysis method and co-patent information. In particular, the proposed methodology has been verified through the case study of electric vehicles, and it is intended to suggest the direction of technological cooperation according to specific technologies and cooperation targets in the future

이 연구의 목적은 과학기술 시대 교육 기법으로서 코칭 기법 활용 가능성을 탐색하여 교육 현장에서의 적용 가능성을 모색하는 데 있다. 문헌 연구를 통하 여 가능성을 탐색한 결과는 다음과 같다. 과학기술 시대 교육 기법으로서 코칭 기법 활용 가능성은 높은 것으로 나타났다. 그 이유는 교수 설계 이론과 접목해 본 결과 교수 설계 이론의 절차에 코칭 기법을 적용할 수 있었다. 또한 코칭의 핵심은 경청을 기반으로 질문을 통하여 피드백하는 의사소통이기 때문에 과학 기술 시대 핵심역량 중 하나인 의사소통 역량을 육성하는 데도 적합한 것으로 확인하였다. 향후 코칭 기법을 수업에 적용하여 검증해 보는 후속 연구가 있기 를 기대한다.

식량 작물의 확보 및 생산량 예측은 국가 발전에 있어 필수적이며, 국가 경제뿐만 아니라 전 세계 식량 안보에 기여 한다. 최근 환경오염으로 인한 이상기후는 식량 작물 생산량에 직ㆍ간접적으로 부정적 영향을 끼치고 있어, 작물 수확량 예측 불확실성이 높아지고 있다. 특히, 노지 작물의 경우 생산량 감소와 품질 저하 문제가 화두 되고 있다. 이러한 문제는 농가들뿐만 아니라 소비자들에게도 큰 피해를 안겨주고 있다. 이러한 생산량 예측 이슈를 해결하기 위해 최근에는 인공지능 기술이 농업 분야에도 활발히 적용되고 있다. 작물 수확량의 정확한 예측을 위한 머신러닝 기반 연구가 집중적으로 수행되고 있다. 따라서, 본 연구에서는 이와 같은 인공지능 기반의 노지 작물 수확량 예측 기술(머신러닝, 딥러닝, 하이브리드 모델 등) 현황 및 작물 수확량에 가장 영향을 많이 끼치는 모델 파라미터 등을 조사하였다.

근래들어 미중 간의 기술패권 경쟁이 심화됨에 따라 미국은 중국의 첨 단반도체 기술의 발전을 저지하기 위한 다양한 경제적, 기술적 제재를 부과하고 있다. 최근에는 반도체산업의 글로벌 밸류체인(GVC, 가치사슬) 의 변동성 증대와 더불어, 미국 주도로 주요 반도체 생산국가들인 한국, 대만, 일본을 포함한 칩포(Chip-4) 동맹을 결성하기 위한 논의를 하고 있다. 물론 이러한 미중 간의 첨단기술 경쟁은 우리나라의 산업전반 특 히, 중국에 생산기지를 가지고 중국의 수요에 많이 의존하고 있는 우리 나라 반도체 산업에도 큰 영향을 미치지 않을 수 없다. 따라서 미중 간 반도체산업 분야의 기술경쟁 실태를 면밀하게 분석하고, 이를 토대로 우 리의 국익을 극대화할 수 있는 방안을 모색하는 것이 절실하다. 이러한 배경 하에서, 본 논문은 반도체산업을 중심으로, 현재 미중 간에 벌어지 고 있는 기술패권 경쟁에서 미국과 중국은 각기 어떠한 위치를 점하고 어떠한 전략을 구사하고 있는지를 분석하고, 이를 토대로 이러한 미중 간 기술경쟁이 우리나라 반도체산업에 미칠 영향을 점검하고 적절한 대 응방안을 모색하고자 하는 것이다.

The purpose of this study was to determine the conditions necessary for the total eradication of mite pests in indoor environments. The study involved the construction of a sterilization experimental setup. For this setup, various sterilization techniques, such as UV-C, ozone, ultrasound, and heat were applied, based on previous research. The experimental procedure consisted of placing mite pests in a chamber and subjecting them to different sterilization techniques. Observations were conducted immediately after the experiment and repeated five days later to assess the extent of eradication. The results showed that UVC, ozone, and ultrasound methods were not successful in completely eradicating the mite pests. In contrast, heat sterilization demonstrated effectiveness depending on the specific temperature and exposure time. To achieve the eradication of mite pests in indoor environments, it is necessary to maintain conditions of short-term high-temperature sterilization above 65°C or sustain temperatures above 50°C for a minimum duration of 90 minutes.

본 연구는 고기능 자폐 스펙트럼 장애아동을 대상으로 App-기반 청자 대화기술 훈련프로그램의 효과를 검증하고 자 하였다. 연구대상은 26명의 자폐 스펙트럼 장애, 아스퍼거 증후군, 전반적 발달장애로 진단된 초등학생으로, 연령 과 IQ, SCQ, ASSQ 점수를 사용하여 중재 집단과 통제 집단으로 짝지어 분배하였다. 중재 집단은 9주 동안 교사와의 비대면 학습을 주 1회 실시하고, 가정에서도 부모 또는 아동이 앱(App)을 활용하여 대화훈련을 실시하였다. 통제 집단은 다른 특별한 프로그램에 참여하지 않았다. 그리고 훈련 전과 후에 평가자와 아동 간의 1:1 대화를 수행하여 대화 자료를 수집하고, 대화차례 주고받기와 주제 운용능력의 변화를 비교하였다. 연구 결과, 중재 집단에서 본 연구에서 개발한 청자 반응 대화훈련 프로그램의 긍정적 효과가 발견되었다. 구체적으로, 중재 집단은 청자 조건에서 적절한 청자 언어 반응이 유지되었고, 통제 집단은 적절한 청자 언어 반응이 감소하였다. 그리고 화자 조건의 대화 차례 주고받기에서는 개시율과 유지율이 증가하고, 주제 운용능력에서는 적절한 주제 개시율이 증가하고, 부적절한 주제 개시율은 감소하였다. 논의에서는 청자 반응 대화훈련 프로그램이 고기능 자폐 스펙트럼 장애아동의 대화 양상 변화에 미치는 효과를 중점적으로 논의하였다.

Around the 1980s, with government’s promotion and dissemination policies for FRP (Fiberglass Reinforced Plastics) of the government as a main material of fishing boats, approximately 97% of the entire fishing boats in Korea have utilized FRP until now. Nevertheless, diverse social and environmental issues have emerged due to the susceptibility to fire and the generation of substances detrimental to human health during the construction process of FRP fishing vessels. Especially, the high disposal cost and the limitation of recycling technology in the disposal process of FRP fishing boats have elicited attention to circular economy. This research intended to grasp the management status and problems of disposed FRP fishing boats in Korea, and to assess the level of competitive advantage of FRP fishing boats’ recycling technologies of FRP fishing boats based on VRIO (Value, Rarity, Imitability, Organization) analysis through domestic and foreign management policies and related recycling examples. According to the survey of 161 respondents, including the industry, stakeholders and experts related to the collection, treatment and recycling of fisheries wastes, it was revealed that FRP fishing boats’ recycling technologies of FRP fishing boats are at the level of ‘unused competitive advantage’ that satisfied the level of value, rarity and imitability, but not the level of organization.

In this review, we examine the latest technological developments in the utilization of truffles, a gourmet ingredient reputed to be one of the "world's three greatest delicacies," considering changing global consumption trends. Global demand for truffles is expected to increase steadily, with an average annual growth rate of 8.9% from 2023 to 2030. As truffles are expensive, the demand for truffles is expected to be concentrated in developed countries such as the United States, European countries, and Japan. In Korea, truffles are utilized in various industries, including food, functional foods, and cosmetics. Korean consumer demand for truffles has consistently remained high since 2019, and truffle products have been performing well in the market. Consequently, there exists substantial potential demand for newly developed truffle-related products and technologies. This review aims to provide objective research information through the systematic analysis of patent applications in Korea and internationally, focusing on technologies involving truffles, and can aid in setting directions for research and development.