• Parasites, Hosts and Diseases
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• 제36권4호
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• pp.235-239
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• 1998

1998년 6월과 7월 두 달간에 걸쳐 한국의 한 공군기지의 3-9세령의 군용견 35마리에서 스크리닝한 10마리의 개심장사상충 자연감염 개의 이정맥으로부터 2시간마다 72시간 동안 채혈하여 0.1ml 혈액의 후층도말 brilliant cresyl blue 표본을 만들어 미세사상충을 동정한 다음 그 수를 계산하였다. 이 실험은 일주일 간격으로 두번 실시하였다. 말초혈액에서 검출된 총 미세사상충의 2시간 간격 평균치에 대한 2시간 간격의 자충수의 백분율을 산출한 바 21시에 최고, 11시에 최저이었으며, 비록 최고치는 최저치의 2.17배로서 낮지만 일봉성 야간정기출현성이 인정되었다 (점근성, 95%).

• 대한안전경영과학회지
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• 제26권1호
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• pp.39-44
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• 2024

In order to prevent accidents via defective ammunition, this paper analyzes recent research on ammunition life prediction methodology. This workanalyzes current shelf-life prediction approaches by comparing the pros and cons of physical modeling, accelerated testing, and statistical analysis-based prediction techniques. Physical modeling-based prediction demonstrates its usefulness in understanding the physical properties and interactions of ammunition. Accelerated testing-based prediction is useful in quickly verifying the reliability and safety of ammunition. Additionally, statistical analysis-based prediction is emphasized for its ability to make decisions based on data. This paper aims to contribute to the early detection of defective ammunition by analyzing ammunition life prediction methodology hereby reducing defective ammunition accidents. In order to prepare not only Korean domestic war situation but also the international affairs from Eastern Europe and Mid East countries, it is very important to enhance the stability of organizations using ammunition and reduce costs of potential accidents.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2527-2538
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• 2011

The Reliability started for MILitary purposes during World War II in 1942, getting more important for maintenance, safety, etc in modern society. As technologies develop, also international standards for measuring the reliability is advancing. RAMS activities for maintenance, safety verification is material to national railroad. And for this, it needs quick response for the changes of standards. Even now standards are upgrading for developing electronic technologies. Therefore analysis of failure rate's trend about such standards is judged necessary. So We submit a this paper for comparative analysis of changing process standards according to development of electronic technologies and reliability. At first, we compared actual usage ratio of standards for understanding the current state of usage. Based of these state of usage, discuss the major standard. And then, introduced reliability standards's trend, calculation method of failure rate and difference of failure rate calculation standard according to march of time. In this paper, used standards are MIL-HDBK-217F, Telcodia, etc.

• 대한안전경영과학회지
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• 제17권1호
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• pp.193-201
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• 2015

The history of Korea Qualification system began after the Korea War. The Qualification was recognized to it's value with economic growth until the 2000. But the value of qualifications has to be re-evaluated under the current global environments. Almost Previous research has not to work for the value of qualifications all of Korea. So, This study presents a evaluation structure frame to work and some evaluation factors for the qualification value. In addition, the methodology proposed to obtain results using the AHP weights based on the evaluation methodology and questionnaire. The analysis results are used as a basis for selecting the future policy direction of the national qualification.

• 대한안전경영과학회지
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• 제15권2호
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• pp.233-242
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• 2013

Korea have been efforts to revitalize the national economy by concentrating for the industrialization about 60 years after the Korean war. A result of these efforts, We will enter to the advanced country as the current economic power. But, Our social structure under the Korean Confucianism cannot ecdysis, because we recognise to the academic ability rather than the competency ability. So, the current government is trying to build social skills by presenting the slogan for the ability to implement social policy. This research utilized by the Human Resources Development Service of Korea and the Ministry of Education statistics for the variables to determine the equivalence of the Korea Education and qualifications in order to achieve the government's efforts to meet the need to improve equivalency is to empirically.

• 해양환경안전학회지
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• 제12권3호
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• pp.225-231
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• 2006

해양은 인류의 생존에 필수적인 지구 환경 및 생태계를 구성할 뿐만 아니라 인류의 번영에 필수적인 다양한 자원을 제공하고 있다. 세계 주요 해양국가들은 국내외의 해양자원안보를 강화하고 해양안전안보의 영역을 확대하고 있으며 해양안보를 위한 국제협력을 강화하고 또한 이들 업무를 추진하는 전문기관의 위상을 강화하고 있다. 우리나라도 관할해역의 확대와 더불어 산업화, 과학기술의 발달 및 사회문화의 발달에 따른 해양안보의 수요급증, 해양안보의 국제협력 증대 등 해양안보의 환경이 급변하고 있는 바, 해양안보의 집행수단 확보, 정보수집능력의 강화. 교육훈련의 강화 등 해양안보의 확보를 위한 정책의 강화가 요구된다.

• 한국기계가공학회지
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• 제21권9호
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• pp.71-77
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• 2022

In times of war or emergencies, weapon systems, such as radars, must receive stable power. This can be achieved using improved onboard portable power systems made of steel containers. However, a breakdown can occur in the event of random vibration during transportation via a vehicle or train. Electrical-power shortages or restrictions pose a significant threat to security. In this study, Composite Wheeled Vehicle(CWV) data and rail cargo data with Acceleration Spectral Density(ASD), specified in MIL-STD-810H METHOD 514.8, were interpreted as input data of the three-axis random vibration method using ANSYS 19.2. Modal analysis was performed up to 500 Hz, and deformations in modes 1 to 117 were calculated to utilize all ASD data. The maximum equivalent stress in the three-axis direction was obtained using a random vibration analysis. Similarly, the margin of safety was calculated using the derived equivalent stress and material properties. Overall, the analysis verified that the portable container designed for the power supply system satisfied the required vibration demands.

• 대한가정학회지
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• 제36권3호
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• pp.173-190
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• 1998

This study reviewed both consumer movement and consumer policy of government in Japan. Their evolution since the Second World War will be reviewed and compared multiple periods, after the Second World war till the late 1960s, the period of the 1970s, the period after 1980s. In addition, firms' consumer satisfaction policies were briefly reviewed in order to fully understand consumer protection activities in japan. This study found four major characteristics of consumer protection activities led by both voluntary consumer organizations and government. First, consumer protection policy of government in Japan after the late 1960s was more active than that of consumer movement by consumer organizations. Second, major concerns for consumer protection were variant over time. The major goal in the first stage of period(during the 1960s) was to protect consumer safety from defective and dangerous goods and services, whereas the goal after the late 1970s was extended to cover various areas concerning the quality of life. Those areas refer to the quality of services, the way of sales and marketing, pollution of environment, and the quality of consuming life. Third, this study found that computer networks, aiming at collecting and analyzing the very useful to improve the consuming life of Japanese by providing sufficient consumer information to encourge rational choices of consumers. Forth, a close cooperation between the central and local administrations was crucial for the successful outcome In Japan This paper gives us useful guideline regarding how to improve consumer movement and govemments' policies for protecting consumer in Korea. In addition, other lessons on successful consumer satisfaction policies of Japanese firms may enable Korean firms to shape effective consumer policies of enhancing their competitiveness.

• 국제초고층학회논문집
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• 제13권2호
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• pp.205-212
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• 2024

Unconventional with respect for tradition: The Karel Doorman building stands in the heart of Rotterdam's shopping area and is a remarkable combination of restoration and new development. On top of the Ter Meulen shopping centre - a monument of the post-war reconstruction period - we have built an extremely light-weight construction in steel and wood (See Figure 1 & 2). This unconventional building method - at least in the Netherlands - enabled the construction of a 70 metres high 'glass' residential building with 114 apartments and 156 parking places. In this way a remarkable historic Rotterdam building was preserved for the future while at the same time new housing was created on a sheer impossible location, contributing to the quality of life and social safety in this part of the city.

• 해양환경안전학회지
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• 제10권2호
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• pp.61-67
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• 2004

20세기 중반이후 항법 시스템의 개발동기 및 유지는 군사적인 전술목적에 있었다고 말할 수 있다. 제2차 세계대전 이후 미소간의 냉전기간 중에도 양국은 각기 대응되는 첨단 항법시스템을 경쟁적으로 개발구축하여 왔다. 이러한 시스템들은 점차 군사목적 외에 일반에 공개되어 국가간 물류(物流)의 이동과 같은 경제 수송 활동에 있어 핵심역할을 담당하고 있다. 항법시스템은 크게 지상계시스템과 위성계시스템으로 나눌 수 있다. 지상계시스템의 대표적인 시스템은 로란-C(Long Rmge Navigation)이고, 위성계시스템의 대표적인 시스템으로 GPS를 말한다. 로란-C 시스템은 미국, EU, FERNS(Far East Radionavigation Service)둥 전 세계 국가 해상 및 육상에서 많이 이용한 시스템이지만, 현재는 그 역할을 위성항법 시스템인 GPS 및 DGPS가 많은 부분을 차지하고 있다. 위성계시스템의 획기적인 발전에 따라 지상계 중장거리 측위장치로는 유일하게 세계적으로 운영되고 있는 로란-C의 운영이용자의 감소와 더불어 로란-C항법장치의 역할에 대한 논란이 대두되고 있어 로란-C 항법 시스템의 실태와 활용방안에 대해 조명해보고, 우리나라 로란-C의 올바른 발전방향에 대해서 논의한다.