• 시큐리티연구
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• 제5호
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• pp.157-178
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• 2002

The objectives of this study is to analyze the curriculum based on the hypothesis of bodyguarding related department and to research the differences of the amongthree groups of public bodyguarding, private bodyguarding and bodyguarding professors with its significance in order to establish the development of direction in education curriculum for bodyguarding related departments at university level,For this purpose, this study categorized the sample group into three kind and surveyed them, Those are public bodyguarding members, private bodyguarding member, and the professors and 121 samples were selected in those three with the help of self-admistrated method, which is one of the sampling methods, First, among the current bodyguarding related theoretical disciplines significant differences among groups was presented by the evaluations on bodyguarding science, traffic safety management, fire extinguishing, secretary science, administration, psychology, sports education, sport physiology, jurisprudence and philosophy, which showed differences among groups through the multiple comparison, But there was no significant difference among the means of the groups concerned with the other curriculum, We could know that more curriculum is needed to facilitate the private bodyguarding in disciplines and system of the current theory in this study. For it is predicted the demand for the private bodyguarding will increase continuously in the future. for which we should prepare. Thus it is required to increase the theoretical curriculum of the private bodyguarding. That is. the models of curriculum like introduction to machinary guarding. introduction to communication. computer theory and so on are required to be established. In addition to that. it must be noticed that the current private bodyguarding is not guaranteed by the legitimate institution. But the private bodyguarding is related to the police service. thus the curriculum of jurisprudence and police science should be studied together.

• 한국보육지원학회지
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• 제9권5호
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• pp.381-405
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• 2013

본 연구는 우리나라 보육사업의 성과와 과제를 조망하기 위한 보육백서 발간 작업의 일부로서 우리나라 보육의 역사와 보육관련 법들의 주요 특징을 알아보고, 보육현황을 소개함으로써 향후 발전적인 보육정책 방안을 모색하기 위한 정책적 기초자료를 구축하는데 목적을 둔다. 먼저 보육역사 부분에서는 1기 아동복리법 시기, 2기 유아교육진흥법 시기, 3기 영유아보육법 초기, 4기 영유아보육법 전면 개정 이후 등으로 구분하여 전반적인 보육사업의 흐름을 고찰하였다. 둘째, 보육 관련 법 부분에서는 기본법인 영유아보육법과 보육관련법인 유아교육법과 아동복지법 그리고 기타 관련법으로 보건복지부와 그 소속기관 직제, 남녀고용과 일 가정 양립지원에 관한 법률, 장애아동복지지원법, 사회복지사업법에서의 영유아보육 관련 내용을 열거하였다. 셋째, 보육현황 부분에서는 일반 현황, 어린이집 운영 및 보육아동 현황, 어린이집 유형 별 현황 등으로 나누어 살펴보았다.

• Journal of Information Technology Applications and Management
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• 제10권3호
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• pp.93-108
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• 2003

As Electronic Commerce is popularized, crimes related to Electronic Commerce are also increasing, Electronic shopping malls and payment gateways focus their attention on network security of payment information or the sizes of encryption keys, In real world, however, the payment-related crimes in electronic shopping malls are not based on the security hole of encryption mechanism of the payment systems, but on the customers carelessness or the insecurity of server systems of merchants or financial institutes. So, this research analyzes the structure of current electronic payment systems, investigates the payment-related crimes, addresses the structural problems of the Korean electronic payment systems, and suggests an alternative general architecture for secure payment systems by incorporating the concept of separation of order information and payment information.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1991년도 추계학술대회 논문집
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• pp.24-26
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• 1991

Identification of the cause of electrically related fire accident may be approached either by studying accident related electric properties or by investigating power instruments at the site of the accident. In the present paper, the former approach is taken especially on investigating the consequences of excessive current induced by electric short circuiting of high power instruments which is reported as the primary cause electricity related fire accidents. In order to provide reliability of the identification method, microscopic photograph's are taken for the cross sections of the electric wires after being exposed to over current and heated by external means, respectively The results are consequently compared and analysed.

• International Journal of Internet, Broadcasting and Communication
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• 제12권2호
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• pp.144-149
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• 2020

A database called Home Location Register(HLR) plays a major role in location management in mobile cellular networks. The objectives of this paper are to identify the problems of the current HLR system through rigorous analysis, to suggest solutions to them. The current HLR backup method is a process of simply writing the changed memory SLD block to disk, which has a problem in maintaining database consistency. Since information change and backup are performed separately by separate processes, there is a risk of information inconsistency when an error restart occurs. To solve this problem, a transaction concept was introduced for subscriber-related operation functions and a recovery method through logging and checkpointing was introduced. The subscriber related functions of tasks terminated normally by the suggested process are recovered with consistency even after system restarts. Performance is also not affected seriously because disk tasks for log occur with only subscriber related functions.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 춘계학술대회논문집
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• pp.227-230
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• 2000

This paper introduces international and Korean standards related to human-related vibration. It reviews recent standards of ISO and KS and compares them. This comparison and analysis reveals that the current direction and activity in ISO is in progress and presents logical ways of updating Korean standards in the future. Finally, the current activity of upgrading Korean standards in the Korean TC 108/SC4 is introduced.

• 한국항행학회논문지
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• 제20권5호
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• pp.482-489
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• 2016

방사선 환경에서 광섬유형광체를 이용하면 감마선을 광다이오드로 검출할 수 있다. 이와 같이 감지된 전류를 전압으로 변환하여 신호 처리하는 장치를 전류모듈 또는 TIA라 하며, 선형적으로 변환시키는 것이 아주 중요하다. 본 연구에서는 변환선형성이 우수하고 잡음이나 옵세트 전압을 최소화하는 미세전류모듈을 연구하여 제품을 개발하였다. 또한 본 논문에서는 전류-전압 변환기인 미세전류모듈을 개발 및 제작함에 있어서 정밀도와 정확도를 요하는 전류모듈을 연구, 개발, 제작하는 과정에 많은 노력을 기울였다. 미세전류모듈의 이론을 정립한 후 회로를 개발하고 그 전류모듈을 테스트한 결과 전류-전압 변환의 선형성이 기존의 문헌에 제시된 제품들과 비교하여 광범위에 걸쳐서 크게 향상되었음을 확인하였다. 관계기관의 입회 하에 본 제품을 실제 감마선 존재 환경에서 테스트 및 적용해본 결과 관련 요건에 적합함을 인정받았다.

• 한국초전도ㆍ저온공학회논문지
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• 제15권3호
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• pp.9-12
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• 2013

Current-voltage characteristic models of superconducting material are suggested by many researchers. These current-voltage characteristic models are important because they can be used for design or simulation of superconductor devices. But widely used current-voltage models of superconductor wire still have some limitations. For example, a standard E-J power model has no parameters related with stabilizer's resistance in superconductor wire. In this paper, a current-voltage characteristic modeling method for high temperature superconductor (HTS) tape with considering the effect of stabilizer is introduced. And a current-voltage characteristic of a HTS tape is measured under different stabilizer conditions. Those measured current-voltage characteristics of the HTS tape modeled with proposed modeling method and the modeling results are compared.

• 한국전기전자재료학회논문지
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• 제20권10호
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• pp.889-894
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• 2007

We investigated the quench velocity of superconducting fault current limiter (SFCL) dependent on the source voltage. $YBa_2Cu_3O_7$ (YBCO) thin film was used as the current limiting element for SFCL. The analysis on the quench velocity of SFCL is essential to determine the capacity of circuit breaker (CB) or coordinate with CB. Generally, the quench velocity of SFCL is related with the short-circuit current. To change the short-circuit current, in this paper, the amplitude of the power source voltage is adjusted. Through the fault current limiting experiments, the quench velocity of SFCL was confirmed to increase fast as the source voltage increased. On the other hand, the peak limited current was shown to increase with steady rate of increase.

• 전력전자학회논문지
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• 제26권1호
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• pp.9-15
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• 2021

In multi-string light-emitting diode (LED) driver system, current balancing is crucial because the brightness of LED is directly related to its forward current. This paper presents a novel LED current balancing topology using current-fed Z-source converter. With the proposed structure, currents flowing through two LED strings are automatically balanced owing to the charge-balance condition on capacitors. Operation of the proposed converter is simple and the proposed converter uses only one active switch and one diode. Moreover, low-side gate driving can be used to operate the active switch. To verify the operation of the proposed LED current balancing converter, a prototype is built and tested with different numbers of LEDs.