• 드라이브 ㆍ 컨트롤
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• 제19권1호
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• pp.51-61
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• 2022

This paper presents a model-free system based on a framework of a backstepping sliding mode control (BSMC) with a radial basis function neural network (RBFNN) and adaptive mechanism for electro-hydraulic systems (EHSs). First, an EHS mathematical model was dedicatedly derived to understand the system behavior. Based on the system structure, BSMC was employed to satisfy the output performance. Due to the highly nonlinear characteristics and the presence of parametric uncertainties, a model-free approximator based on an RBFNN was developed to compensate for the EHS dynamics, thus addressing the difficulty in the requirement of system information. Adaptive laws based on the actor-critic neural network (ACNN) were implemented to suppress the existing error in the approximation and satisfy system qualification. The stability of the closed-loop system was theoretically proven by the Lyapunov function. To evaluate the effectiveness of the proposed algorithm, proportional-integrated-derivative (PID) and improved PID with ACNN (ACPID), which are considered two complete model-free methods, and adaptive backstepping sliding mode control, considered an ideal model-based method with the same adaptive laws, were used as two benchmark control strategies in a comparative simulation. The simulated results validated the superiority of the proposed algorithm in achieving nearly the same performance as the ideal adaptive BSMC.

• 한국기록관리학회지
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• 제23권1호
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• pp.1-25
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• 2023

이 연구의 목적은 다양한 기관과 단체, 개인 등이 네트워크에 기반하여 민간기록물을 수집할 수 있도록 관련 법령·제도 개선 방향을 제시하는 것이다. 연구를 위해 해외 기록물관리기관의 민간기록물 관련 법령과 제도, 층위에 따른 네트워크 협력 현황과 지원 내용을 조사하였다. 이를 기반으로 민간기록물과 관련된 정의와 기관 간의 역할 지정, 층위에 따른 네트워크 협력 방향을 제언하였다. 특히 특정 기관 중심의 협의체가 아닌 기관, 단체, 기업, 개인 등 다양한 주체들이 참여하는 협의체를 법제화·제도화하는 것을 강조하였다.

• 농촌계획
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• 제13권3호
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• pp.1-11
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• 2007

In the continued economic prosperity, concern about environment and landscape is converted to develop actual institutional system on conservation and management of landscape. In these transition periods, the objective of this study is to suggest limitations and improvements of landscape conservation system for each landscape type such as rural landscape, natural landscape, urban landscape, historical landscape through reviewing related policies, laws, and case studies. As a results, landscape conservation system is insufficient for each landscape type and is regulated sporadically by a few laws. In particularly, rural landscape has been damaged seriously since significance of it was lesser recognized than other landscape types. Urban landscape is managed by landscape ordinance and planning which local government developed, however it doesn't have effectiveness due to insufficient legal basis and related cases. Therefore to enhance recognition of landscape as well as to support the law of landscape which is established this year is required.

• 웰빙융합연구
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• 제5권4호
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• pp.57-67
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• 2022

Purpose: The purpose of this study is to identify what research ethics issues are related to chemical incidents at the level of national disasters in Korea, and then to secure clear research ethics to prevent similar incidents from recurring. Research design, data and methodology: The study design was a case study of the humidifier disinfectant disaster in Korea. The humidifier disinfectant incident is a worldwide issue that has never occurred in the world. The main cause of the humidifier disinfectant incident that occurred only in Korea was the toxicity of the humidifier disinfectant contained in the humidifier spray. In this regard, research ethics will be derived through related laws and systems, research ethics status, incident damage and compensation, prosecution's investigation status, and the final precedent of the Supreme Court. Results: Although the lack of laws and systems of government departments related to humidifiers is important in the research results, the violation of ethics regulations by researchers during research experiments has become a decisive problem. Conclusions: In conclusion, the most important thing is that the research bioethics of researchers at the forefront should take precedence over any other values, especially during experiments and research related to public health.

• 한국항공운항학회지
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• 제31권4호
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• pp.72-81
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• 2023

The use of EFB (Electronic Flight Bag) has expanded, providing convenience to flight crews by minimizing paper usage within aircraft and offering the latest information, operability, and convenience related to aircraft operations. EFBs provide flight-sensitive information such as aircraft performance calculations, airport diagrams, routes, and approach procedures. For these information, EFBs connect to the cyber environment through Wi-Fi or self-contained data communication, allowing access to cloud-based systems for information updates, with administrators uploading the latest information for retrieval. However, in contrast to the evolving aviation technology, there is currently no legislation or security policy in place to maintain the security of EFBs, leaving them exposed to potential cyber threats. Therefore, improvements such as revising relevant laws to address potential cyber threats targeting EFBs and establishing and implementing EFB management systems are necessary. This paper aims to present the necessity for amending laws related to EFB security in response to cyber threats and suggests methods for enhancement.

• 수산경영론집
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• 제51권1호
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• pp.53-66
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• 2020

The Ministry of Maritime Affairs and Fisheries is supporting the "Environmentally Friendly Fisheries Promotion and Private Assistance Project" to increase production of eco-friendly, high-value-added foods. Private-backed operators selected for the project will have an economic opportunity to build, expand or refurbish eco-friendly fishing grounds. To facilitate this, the scope of project support was expanded after 2015 and an opportunity was prepared for private subsidy projects to grow to a new level in terms of quality and quantity by switching to a public offering project. However, starting in 2017, demand from the private sector will plunge and selected projects will be delayed or the project implementation rate will be lowered. It was a time for subsidy-related laws and systems to be reinforced but private subsidy projects do not temporarily shrink simply due to the increased administrative burden on private subsidy operators on subsidy management. It plans to review the correlation between laws and systems related to the construction of fish farms and suggest ways to enhance the efficiency of implementation so that economic advantages, the biggest advantage of the private subsidy project, can be recovered within the current legal system.

• 한국재난관리표준학회지
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• 제2권3호
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• pp.67-72
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• 2009

최근 재난의 발생은 복합재난의 형태로 변화하고 있으며 국가 핵심기반시설에 대한 적극적인 보호활동의 필요성을 증대시키고 있다. 본 연구는 국가핵심기반시설의 통합적 관리를 위하여 국내 외의 국가기반시설 관련 법 제도를 조사 분석하였으며, 국가기반시설의 분류체계를 8개 분야에서 정부서비스, 다중이용시설, 국가기념물, 방위산업기초를 추가하여 13개 분야로 확대하는 방안을 제안하였다. 또한, 국가기반시설, 국가중요시설 및 국가보안목표시설 등으로 나뉘어 지정 관리되는 현행제도를 국가기반시설로 통합지정 관리할 수 있도록 국가기반체계 통합관리방안과 국가기반체계 보호계획 프레임워크(안)을 제시하였다.

• 한국중재학회지:중재연구
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• 제31권4호
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• pp.137-160
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• 2021

The customized cosmetics preparation management qualification system was implemented in March 2020, and it served to create jobs by developing professionals and vitalizing the cosmetics business. However, various problems such as high examination fees, suitability of questions, and utilization in industries are emerging. This paper attempts to prevent disputes that the system can cause and suggest ways to improve it by researching customized cosmetics, the industry status, and comparing foreign cosmetics laws. There is a kind of opinion that laws should be eased for this industry and the other opinion that expertise is necessary in this field because of safety. The system now has adverse effects due to a failure to adjust the difficulty of the exam. Cosmetics are not prescription-based, so they are routinely used. However, some toxic ingredients can cause side effects if they do not conform with certain standards. Also, it is difficult for a case to lead to lawsuits because most consumer damages related to cosmetics are individual. In addition, as e-commerce develops, there is a growing possibility of seeing more consumer damages. If safety and distribution issues, which experts are concerned about, escalate, the private dispute settlement system (among the ADR systems) should be activated as a resolution method.

• 한국건설관리학회논문집
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• 제21권2호
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• pp.22-29
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• 2020

많은 내화 및 방화 등 화재관련 법규와 기준들 중 방화문은 화재 발생 시 화재 및 연기의 확산을 막아 인명의 피해를 최소화하는 역할을 하는 중요한 시설물이다. 이에 따라 해당 법규 및 관련 시행규칙 및 고시를 통해 소요되는 성능에 대한 기준을 지속적으로 상향시켰고 필히 해당 성능을 확보하도록 한다. 하지만 관련 법규와 제도의 맹점으로 인해 방화문 시험결과 합격품조차 방화성능에 리스크가 있는 것을 확인하였다. 이에 본 연구는 내화관련 성능의 기준을 분석하고, 단순 방화성능 외에 추가적으로 다른 법에서 요구하는 성능을 확인하여 기준을 정리하고, 요구하는 복합적인 성능을 명확히 규정하고자 하였다.

• 제어로봇시스템학회논문지
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• 제14권10호
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• pp.1014-1021
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• 2008

This paper proposes an intelligent sliding mode control method for robotic systems with the unknown bound of model uncertainties. In our control structure, the unknown bound of model uncertainties is used as the gain of the sliding controller. Then, we employ the function approximation technique to estimate the unknown nonlinear function including the width of boundary layer and the uncertainty bound of robotic systems. The adaptation laws for all parameters of the self-recurrent wavelet neural network and those for the reconstruction error compensator are derived from the Lyapunov stability theorem, which are used for an on-line control of robotic systems with model uncertainties and external disturbances. Accordingly, the proposed method can not only overcome the chattering phenomenon in the control effort but also have the robustness regardless of model uncertainties and external disturbances. Finally, simulation results for the five-link biped robot are included to illustrate the effectiveness of the proposed method.