• 자동차안전학회지
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• 제13권4호
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• pp.81-91
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• 2021

Last year, the Autonomous Vehicle Act was enacted to respond to deployment of autonomous vehicles. But the Act stipulates the operation of autonomous vehicle pilot zones, In addition, in order to analyze autonomous vehicle accidents and establish a reasonable damage compensation system, the Automobile Damage Compensation Guarantee Act was revised. But, It is necessary to seek plans for institutional development such as detailed concepts of self-driving cars and driving, a security certification system for securing safety of autonomous cooperative driving, and enhancement of the effectiveness of special cases related to personal information processing. I would like to seek ways to improve the legal system to respond reasonably to the deployment of autonomous vehicles.

• 항공우주정책ㆍ법학회지
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• 제19권1호
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• pp.9-35
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• 2004

우리나라는 1994년에 우주센터가 건설되어 1995년부터 본격적인 우주개발시대로 진입하게 되었으며 2002년 11월 28일 충남 해상의 한 기지에서 우리나라가 독자적으로 개발한 액체추진로켓인 KSR-III(3단형 과학로켓)가 성공적으로 발사됨에 따라 2005년까지 100kg급 소형위성 발사체를 개발하고 2010년까지는 저궤도 실용위성 및 발사체를 자력으로 개발하는 등 자력에 의한 우주발사체제를 갖추게 되었다. 그러므로 위성발사를 위한 로켓의 시험발사를 자주 하게 됨으로 발사사고에 대한 법적 처리를 대비하기 위하여 지금 추진 중인 우주개발진흥법안 제14조에서는 우주물체이용에 따른 손해배상책임을 규정하여 입법적으로 해결하고 있다. 그러나 동법 안 제15조에서는 보험 가입을 강제성을 띠어 의무적으로 하여야 하는데 이에 대하여 명백히 규정하고 있는 것이 아니라 우주물체를 대한민국 영토, 영해 및 영공 내에서 발사할때 과학기술부 장관의 허가를 받도록 하면서, 필요한 경우에 당해장관이 손해배상을 목적으로 하는 보험부보를 허가요건으로 정할 수 있다고 규정하고 있을 뿐이다. 피해자를 확실히 보호하고 책임의 분산을 위해서도 강제성을 띤 의무조항으로 규정하여야 한다. 더 나아가 정부는, 우주산업은 지식 및 노동집약산업으로 그 부가가치가 높고 에너지가 덜 들고 다른 산업에 미치는 기술 파급효과가 대단히 큰 산업이므로 우주개발중장기 기본 계획을 보완하여 우주산업 분야에 집중 투자할 필요가 있다고 생각한다.

• 무역상무연구
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• 제8권
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• pp.84-120
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• 1995

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2005년도 춘계학술발표회
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• pp.97-109
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• 2005

• Structural Monitoring and Maintenance
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• 제4권4호
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• pp.301-329
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• 2017

Impedance-based damage detection method has been known as an innovative tool with various successful implementations for structural health monitoring of civil structures. To monitor the local critical area of a structure, the impedance-based method utilizes the high-frequency impedance responses sensed by piezoelectric sensors as the local dynamic features. In this paper, current advances and future challenges of the impedance-based structural health monitoring are presented. Firstly, theoretical background of the impedance-based method is outlined. Next, an overview is given to recent advances in the wireless impedance sensor nodes, the interfacial impedance sensing devices, and the temperature-effect compensation algorithms. Various research works on these topics are reviewed to share up-to-date information on research activities and implementations of the impedance-based technique. Finally, future research challenges of the technique are discussed including the applicability of wireless sensing technology, the predetermination of effective frequency bands, the sensing region of impedance responses, the robust compensation of noise and temperature effects, the quantification of damage severity, and long-term durability of sensors.

• Smart Structures and Systems
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• 제11권4호
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• pp.349-364
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• 2013

Recently, researchers in the field of structural health monitoring (SHM) have been rigorously striving to replace the conventional NDE techniques with the smart material based SHM techniques, employing smart materials such as piezoelectric materials. For instance, the electromechanical impedance (EMI) technique employing piezo-impedance (lead zirconate titanate, PZT) transducer is known for its sensitivity in detecting local damage. For practical applications, various external factors such as fluctuations of temperature and loading, affecting the effectiveness of the EMI technique ought to be understood and compensated. This paper aims at investigating the damage monitoring capability of EMI technique in the presence of axial stress with fixed boundary condition. A compensation technique using effective frequency shift (EFS) by cross-correlation analysis was incorporated to compensate the effect of loading and boundary stiffening. Experimental tests were conducted by inducing damages on lab-sized aluminium beams in the presence of tensile and compressive forces. Two types of damages, crack propagation and bolts loosening were simulated. With EFS for compensation, both cross-correlation coefficient (CC) index and reduction in peak frequency were found to be efficient in characterizing damages in the presence of varying axial loading.

• 한국항공운항학회지
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• 제17권4호
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• pp.94-106
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• 2009

오늘날 항공기사고는 우리나라뿐만 아니라 세계도처에서 때때로 발생되고 있다. 특히 항공기에 대한 갑작스러운 테로 공격 또는 일반 항공사고에 기인된 항공기의 추락 및 물건의 낙하로 인하여 지상에 있는 제3자에게 손해를 입히는 경우가 간혹 발생되고 있다. 이와 같은 항공사건에 있어 가해자(항공기 운항자)는 피해자(지상 제3자 등)에 대하여 불법행위책임을 부담하게 되는데 이러한 사건들을 해결하기 위하여 1952년의 개정로마조약과 1978년의 몬트리올의정서 등이 있음으로 본 논문에서는 이들 조약의 성립경위 및 주요내용과 개정이유 등을 간략하게 설명하였다. 특히 2001년 9월 11일에 뉴욕에서 발생된 이른바 항공기 납치에 의한 동시다발 테러 사건의 피해는 4대의 항공기에 탑승한 승객 및 승무원 266명이 전원 사망하였고 워싱턴에 있는 미국 방성청사에서의 사망 및 실종이 125명, 세계무역센터에서의 사망 및 실종이 약5,000여명에 달하는 막대한 피해가 발생되었다. 9/11참사사건은 지상에 있는 제3자의 인적 및 물적 손해가 거액에 달하였음으로 이에 따라 영국의 로이드보험 등 세계보험업계가 크게 손실을 입게 되어 항공보험을 기피하는 현상이 생겨나 법적인 문제점이 제기되었다. 국제민간항공기구(ICAO)에서는 9/11사태 이후 이와 같은 테로 사건의 법적대응책과 자구책을 마련하기 위하여 약 8년간의 심의 끝에 항공기에 대한 테로 공격(불법방해 행위)과 1952년 개정로마조약의 현대화(일반위험) 등 새로운 2개 조약을 2009년 5월 2일에 성립시켜 공표하였다. 상기 새로운 2개의 조약 중 첫째 조약은 항공기의 불법방해 행위에 기인된 제3자에 대한 손해 배상에 관한 조약(Convention on Compensation for Damage to Third Parties, Resulting from Acts of Unlawful Interference Involving Aircraft: 일명 불법방해조약이라고 호칭함: Unlawful Interference Convention)이고 둘째 조약은 항공기에 기인된 제3자에 대한 손해배상에 관한조약 (Convention on Compensation for Damage Caused by Aircraft to Third Parties: 일명 일반위험 조약이라고 호칭함: General Risk Convention) 이다. 본 논문에서는 이 새로운 2개 조약에 대한 ICAO가 주관한 성립경위와 주요 내용 및 필자의 논평을 제시하였고 이들 조약에 대하여 한국의 조속한 비준을 촉구하는 바이다.

• Structural Engineering and Mechanics
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• 제45권2호
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• pp.159-168
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• 2013

The effect of structural uncertainties or measurement errors on damage detection results makes the robustness become one of the most important features during identification. Due to the wide use of vibration signatures on damage detection, the development of vibration-based techniques has attracted a great interest. In this work, a review on vibration-based robust detection techniques is presented, in which the robustness is considerably improved through modeling error compensation, environmental variation reduction, denoising, or proper sensing system design. It is hoped that this study can give help on structural health monitoring or damage mitigation control.

• 수산경영론집
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• 제31권2호
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• pp.133-153
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• 2000

During the last several decades, Korea has been regarded as one of the fastest growing economies in the world. However, the small size of national land has not met the vigorous demand for land necessary to develop economic infra-structures such as large-scale harbors airports and highways. In order to satisfy the growing demand for land, the Korean government and industry have implemented the national land development programs to reclaim land from the sea fur the several decades. It is certain that these land development programs have resulted in a lot of property disputes between fishermen and public project administrators. This paper is to develop a quantitative model to estimate compensation for damages or restriction of charted fisheries resulting from large-scale public projects. In this paper, the compensation model is derived by using cost-volume-profit analysis framework because the compensation for charted fisheries basically depends on the factors such as the costs, production volume, profit of charted fisheries damaged or restricted by public projects. The model shows that the compensation for damages or restriction of charted fisheries is determined by the average annual profit, damage duration period, and the degree of fishery damages. In addition, the degree of fishery damages measured by the ratio of lost profit to annual average profit turns out to be determined by the following factors: annul profit, unit variable cost, decrease in production volume, the rate of increase in variable cost, and a change in fixed cost. Furthermore, this parer discusses the nam issues related to practices and regulation of the compensation for fishery damages in the current Fishery Act of Korea and suggests some appraisal methods which will be able to lead to theoretically correct and fair compensation for fisheries damages resulting from large-scale public projects.

• Structural Monitoring and Maintenance
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• 제11권3호
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• pp.203-217
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• 2024

Electro-mechanical impedance (EMI) technique is a low-cost structural damage detection method. It reflects structural damage through the change in admittance signal which contains the structural mechanical impedance information. The ambient temperature greatly affects the admittance signal, which hides the changes caused by structural damage and reduces the accuracy of damage identification. This study introduces a convolutional neural network to compensate for the temperature effect. The proposed method uses a framework that consists of a feature extraction network and a decoding network, and the original admittance signal with temperature information is used as the input. The output admittance signal is eliminated from the temperature effect, improving damage identification robustness. The admittance data simulated by the finite element model of the spatial grid structure is used to verify the effectiveness of the proposed method. The results show that the proposed method has advantages in identification accuracy compared with the damage index minimization method and the principal component analysis method.