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NORTH KOREAN Refugees: Empowerment by the Police s Gender and Age
Hwasoo Kim,Sunggu Jo J-INSTITUTE 2021 International Journal of Terrorism & National Secu Vol.6 No.3
Purpose: This study has analyzed the differences in the empowerment by gender and age of the police officers serving for the South Korean security police organization, which is dedicated to the North Korean refugees, who are increasing in number due to the economic downfall of the North Korean regime. In addition, it is sought to discuss the policy measures which can help improve the new empowerment of the North Korean refugees and the security police organization analyzed based on the results of this study. Method: In this study, to analyze the differences in the empowerment as per the gender and age of the police officers serving in the security police organizations, 100 police officers from the security department who have work experiences related to the North Korean refugees with the South Korean police officers as the group of re-cruitment in 2020 were targeted, and the survey was conducted by using the Self-Administration Method. Results: In terms of the differences in the empowerment as per gender, with Q-1 What I m doing is important to me , men demonstrated a higher level of significance than women at the significance level of 5%, and in terms of the differences in the empowerment as per age, 8 out of 20 questions demonstrated that empowerment was higher for those in their 50s or older than in those in their 20s, 30s, and 40s. Conclusion: The weight of the women police officers in the organizational culture of the security police for the expansion of the North Korean refugees ought to be increased. Among the North Korean refugees, women ac-count for twice as many as men, and the role of women police officers in counseling and managing them ought to be taken seriously. Furthermore, there is a need for an ambience where the empowerment possessed by the police officers in their 50s and older may be conveyed to the young police officers, and the values generated from the long experiences of working with the North Korean refugees, that is, a strong sense of the view of nation, ought to be well conveyed to the young police officers.
A Study on the Thickness of the Oxide by the Characteristics of Spent Nuclear Fuel Combustion
Hwasoo Kang,Jooyoung Ban,Kiyoung Kim 한국방사성폐기물학회 2023 한국방사성폐기물학회 학술논문요약집 Vol.21 No.2
The types of fuel loaded and burned in domestic nuclear power plants are WH-type and OPR/ APR-type nuclear power plants, with a total of 19 types. In the case of spent nuclear fuel released in Korea, the low combustion level of 45,000 MWD/MTU or less accounts for about 75%. In terms of fuel type, WH 17×17 and CE 16×16 fuels account for about 85% of all spent nuclear fuels. The thickness of the oxide film of the fuel cladding can make the fuel rod vulnerable during reactor operation, directly affecting the integrity of the fuel rods. so, it is a very important design factor in design. Therefore, the fuel rod design code that predicts and evaluates this has also been developed to accurately predict fuel rod corrosion. And it’s being applied to the design. In this study, the ECT probe measured by inserting it between fuel rods. The thickness of the fuel cladding oxide film was measured for spent nuclear fuel. When reloading operational nuclear fuel, the IAEA recommends an oxide film thickness of up to 100 micrometers. In this study, it was confirmed that spent nuclear fuels keeping integrity burned for 2-3 cycles were sufficiently maintained within the limit. However, the difference could be confirmed according to the characteristics of the coating material, the combustion cycle, and the use of poison rods. For the reliability of the data, symmetrical to the quadrant fuels were selected, and the fuel burned at the same period was measured. The method of selecting the target fuel can produce meaningful results.
High Step-Up Resonant DC–DC Converter With Ripple-Free Input Current for Renewable Energy Systems
Seok, Hwasoo,Han, Byeongcheol,Kwon, Bong-Hwan,Kim, Minsung IEEE 2018 IEEE transactions on industrial electronics Vol.65 No.11
<P>In this paper, we propose a high step-up resonant dc–dc converter with ripple-free input current for renewable energy systems. We use an input-current doubler and a switching mechanism employed at an output-voltage doubler to achieve high step-up voltage gain without having to use a transformer with high turns ratio. An active-clamp circuit installed on the primary side suppresses the surge voltage at the switch components and recycles the energy stored in the leakage inductance. A resonance that occurs at the secondary side of the converter is used to reduce the turn-<SMALL>off</SMALL> current and switching loss significantly, and to achieve high power conversion efficiency. The input-current ripple declines to zero theoretically because the duty cycle of the primary-side switches is always set to 0.5 regardless of the input voltages and load variations. The circuit operations, steady-state analysis, and design guideline of the proposed converter are also presented. A 600-W prototype converter has been fabricated to demonstrate the performance of the proposed converter.</P>
신화수(Hwasoo Shin),유호영(Hoyoung Yoo) 한국전기전자학회 2020 전기전자학회논문지 Vol.24 No.2
산업의 발전과 인터넷의 발전으로 보안의 중요성이 증가하면서 암호화에 필수적인 요소인 암호화 키의 생성에 사용되는 난수 발생기의 연구가 활발하게 이루어지고 있다. 외부 공격으로부터 안전한 고성능의 암호화 키를 생성하기 위해서는 예측하기 어려운 품질 좋은 난수 발생기가 필수적이다. 일반적으로 사용되는 의사 난수 발생기는 충분한 성능의 난수를 발생하기 위해서 많은 양의 하드웨어 리소스가 요구됨에도 외부에서 암호화 키를 외부에서 알아낼 가능성이 존재한다. 그러므로, 다양한 잡음을 통해 난수를 발생시켜 외부에서 예측 불가능하며 품질 좋은 진 난수 발생기에 대한 요구가 증가하고 있다. 본 논문은 진 난수 생성기술로 대표적인 준안정성 및 발진기를 통한 진 난수 발생기의 최신구조가 랜덤소스를 생성하는 방식을 조사 및 비교한다. 또한, NIST에서 제공하는 난수 검증용 도구인 SP 800-22 테스트를 통해 발진기 기반 진 난수 발생기 성능을 검증한 자료를 분석한다. As the importance of security increases in various fields, research on a random number generator (RNG) used for generating an encryption key, has been actively conducted. A high-quality RNG is essential to generate a highperformance encryption key, but the initial pseudo-random number generator (PRNG) has the possibility of predicting the encryption key from the outside even though a large amount of hardware resources are required to generate a sufficiently high-performance random number. Therefore, the demand of high-quality true random number generator (TRNG) generating random number through various noises is increasing. This paper examines and compares the representative TRNG methods based on metastable-based and ring-oscillator-based TRNGs. We compare the methods how the random sources are generated in each TRNG and evaluate its performances using NIST SP 800-22 tests.