• The KIPS Transactions:PartC
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• v.8C no.1
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• pp.75-87
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• 2001

The Conditional Access System is the complete system for ensuring that broadcasting services are only accessible to those who are entitled to receive them. Four major parts to this system are scrambling, descrambling, authentication and encryption. For the proper operation, which means hard-to- break and uninterrupted service, secure key management and efficient delivery mechanism are very important design factors to this system. Performance analysis is another important factor to this system that is used in massive subscriber environment. In this thesis, one of the secure and efficient key management mechanisms is proposed. For the secrecy of this mechanism, hierarchical stacking of keys and key generation matrix are proposed. For the proof of efficient delivery of those keys, simulation results and performance analysis. which is based on queuing analysis, are presented. Lastly, optimal key generation and delivery period, maximal and minimal key deliver time, and communication capacity for data collection are presented for various subscriber volume.

• Journal of Service Research and Studies
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• v.12 no.1
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• pp.1-24
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• 2022

This study was conducted to derive a new model for popular democracy in the modern society. The problem is exacerbated as the original model of democracy, isonomia, has faded and modern democracy is operated as a democracy in which the masses rule. Democracy is exposing a bigger problem due to the economic inequality caused by the majority rule and the capitalist economic system. Popular democracy, in which all the masses are equally qualified as sovereigns, is a structure in which cunning politicians can easily seize power if the voters are not wise. Isonomia is a system in which free people who solve economic problems on their own and have honesty, courage, dedication, sacrifice and sincerity set laws with the same qualifications, and keep the laws themselves, is a system that depends heavily on the conscience and virtue of free people. Modern popular democracy embodies the absolute equality of the sovereign regardless of economic power, but without the spirit of sacrifice and dedication to the community, those who can win popularity by wrapping themselves up as if they are sacrificial and capable people may seize power. This study presents a service-oriented democracy as a system that can maintain the merits of modern popular democracy while embodying the essence of isonomia. The system was implemented focusing on the qualifications for virtue, such as honesty, courage, sacrifice, integrity, etc., fair to all regardless of wealth. Human imperfections have been supplemented by the use of artificial intelligence. The assumption about the nature of the sovereign and public officials' agents was newly established, and the winner-take-allism problem was solved. This study proved that both the philosophy of Isonomia and the merits of Democracy can be realized through service-oriented democracy based on the common principle of humanity and the philosophy of service. Service-oriented democracy can be called revision democracy.

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.329-337
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• 2023

The purpose of this study is to explore the standards and directions of professional competency and proficiency of social workers in Korea through a review of British cases. In particular, in the face of a super-aged society, this study aimed to improve the proficiency of social workers in the field of elderly welfare in Korea by examining the complacency and proficiency standards of the British Association of Social Workers and the Health Care Professionals Council related to the care of the elderly. With the structure of a Professional Capabilities Framework, the UK promotes the acquisition of competency-based qualifications by specifically presenting the competency of social workers at each stage of qualification. In addition, general and detailed standards of proficiency of social workers in the care field are presented at each qualification stage. In order to improve the competence and proficiency of Korean social workers through a case study in the UK, this study presented the need for a standard that connects "common competencies, professional competencies, and proficiency of social welfare professionals." This study also suggested the necessity of the role of Social Welfare Education Association and Association of Social Workers for this purpose

• The Korean Journal of Emergency Medical Services
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• v.9 no.2
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• pp.39-53
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• 2005

This study examines need and qualification of safety education teachers with elementary school students and aims to provide data for improving safety education of elementary school As a result of study, it was found that on need of safety education teacher at elementary school, 'very needed' showed the highest response and students who answered 'the first class emergency medical technician' on qualification of safety education teacher showed the highest safety consciousness and low rate of safety accidents. Therefore, for improving safety education at elementary school, adoption of optional course at college or university to learn qualification and functions necessary for being special teacher and institutional support by the ministry of education that employment after passing elementary school teacher appointment examination are needed.

• Electrical & Electronic Materials
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• v.4 no.4
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• pp.354-360
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• 1991

PVDF는 현재까지 출현된 고분자 재료중 가장 좋은 가능성을 가진 고분자 재료이다. 시료에 일정시간 전압을 인가한 후 전압을 제거하고 시료양면을 단락하였을때 흐르는 단락전류는 일반적으로 인가 전아브이 극성과 반대 방향으로 감소한다. 본 연구에서는 PVDF의 단락전류가 짧은 시간동안 감소하다가 증가한 후 다시 감소하는 특이한 ABNORMAL SHORT CURREUT(Isa)를 규명하기 위하여 인가전압, 시료온도 및 고체 구조를 변화시키면서 단락 전류를 관측하고 PVDF의 열자격 전류특성을 분석하였다. PVDF의 단락전류 특성은 150.deg.C에서는 특이한 단락전류가 흐르지만 150.deg.C이하의 온도에서는 특이한 단락전류가 흐르지 않는다. 이들 실험결과로 부터 특이한 단락 전류 Isa는 시료의 온도가 150.deg.C에서만 나타나고 전계 세기나 결정 구조에는 관계가 없음을 알았다. 그리고 Isa는 쌍극자의 재배향으로 흐르는 정상적인 단락전류 성분과 가동이온이 확산 혹은 드리후트에 의한 단락전류 성분이 중첩되어 관측된다는 모델을 제시할 수 있다.

• Proceedings of the Korean Society for Information Management Conference
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• 2013.08a
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• pp.23-26
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• 2013

지식기반사회와 정보홍수시대로 갈수록, 도서관의 존속여부에 대한 고민으로 도서관경영의 중요성은 심화되며, 관련 연구가 많이 이루어지고 있다. 이에 본 연구는 동시출현단어 분석을 통해 도서관경영 분야의 지적구조를 분석하였다. 데이터 수집은 2001~2013년도까지 한국연구재단에 등재된 5개의 문헌정보학 관련 학회지를 대상으로 하였으며, 해당 논문 수는 413건이다. 데이터 처리후 군집분석을 실시하여 9개의 군집을 형성하였으며, 해당 군집은 장서개발, 디지털도서관, 공공도서관, 마케팅 및 조직관리, 국립중앙도서관 및 작은도서관, 인사관리(직무/자격제도), 대학도서관, 학교도서관, 서비스 품질평가이다. 이러한 연구 결과는 기존의 도서관경영 분야의 주제영역과 비교하였다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.21 no.1
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• pp.34-39
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• 2015

KCG, responsible Agency of maritime SAR operation has been known to address the marine casualties well, however, it was criticized because KCG failed to take prompt and effective response to the recent Ferry disaster at the very early stage. In this regards, the authors analyze the characteristics of marine incident with historical data, and also review and examine the national SAR system focusing on SAR coordination and human resources to make recommendation and suggestion in order to minimize the loss of lives to future marine incidents. As a result, KCG shall augment its capabilities, inter alia, fast libeboats and rescue helicopters for prompt response to marine incidents at the coastal waters, and KCG shall re-adjust the establishment of Rescue Coordination Center to improve operational problems of current system in accordance with IMO guidance, KCG is required to introduce mandatory training, qualification and certificate system to enhance the professionalism of SAR personnel.

• The Korean Journal of Emergency Medical Services
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• v.15 no.2
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• pp.5-14
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• 2011

Purpose: The aim of this study is to identify the legal concept of a license and a qualification for health care personnel. We analyze the appropriateness of the qualification for the first-class paramedics and the sufficiency of 3-year job experience in substitution for college level academic major. Method: We reviewed Laws on Healthcare which stipulate academic and career qualifications for healthcare personnel for whom college-level academic training and job experience to get a license. Results: There is no legal consideration which permits major and educational background substituted by job experience. Only third-class hygienist who graduated from a high school or the equivalent with 3 year job experience can apply for first-class hygienist' national license examination without educational requirements. However, it is nothing to compare with first-class paramedics because the work of hygienist is not directly related to patients care and there is no need of doctor's supervision for hygienist' job. Paramedics have a major role in saving emergency patients in making prompt decision, applying appropriate emergency treatment, securing intravenous route, managing intubation, applying defibrillator, and etc. Conclusion: Ministry of Health & Welfare should grant license to paramedics and annul replacement of academic major background. In addition, it is imperative to broaden the scope of paramedics' job so that they can guarantee patient's life saving in emergency situation with quality major curriculum of college level.

• The Korean Journal of Emergency Medical Services
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• v.23 no.3
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• pp.17-27
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• 2019

Purpose: To provide legislative data for the amendment of Article 36 of the Emergency Medical Service Act on the qualifications of emergency medical technicians. Methods: The study was drafted based on the Emergency Medical Service Act; data on the emergency medical technicians (EMT) system and curriculum in Korea, United States. Japan, and Taiwan; and previous studies on the EMT system in Korea. Results: The length of education. work scope. amd role of level 1 EMTs vary significantly depending on the type of qualifications they have as emergency medical professionals, while the supply of level 1 EMTs has already reached a point of saturation. Accordingly, the current regulation on allowing level 2 EMTs with at least three years of experience to take the level 1 EMT test presents serious inequity for students just graduating from their emergency medical services program. It is also a factor that degrades the professionalism of level 1 EMTs. Conclusion: Article 36, paragraph 2. subparagraph 3 of the Emergency Medical Services Act pertaining to regulations on "EMTs who have worked as level 2 EMTs for at least 3 years" needs to be removed.

• Fire Science and Engineering
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• v.28 no.5
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• pp.104-109
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• 2014

This study is analysis of the effectiveness and satisfaction index of hospital-based skill training (HST) in level 2 emergency medical technicians. The purpose of this study is to provide basic data for the effective operation. The survey carried out to 70 level 2 emergency medical technicians who participate in HST from July 29 to August 22 in 2013. From the study, self evaluated operation skills scale were 3.09 before training and 3.80 after training. It showed statistically significant enhancements. satisfaction index were 3.80. appopriate education periods were (1~2) weeks (64.3%). the longer the time had been since their training completion, the higher education satisfaction. The multilateral studies on problems and needs of HST and development of training programs that includes hospital training monitoring are necessary.