• The Korean Journal of Archival Studies
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• no.47
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• pp.197-225
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• 2016

Korean archival community had continuously dealt with attempts at weakening the core of records and archives principles in the name of deregulation. In 2015, Korean government announced revisions of the Archives Law in order to boost uses of commercial records facilities by public institutions. As key concepts were unclear and understandings among stake-holders varied, a considerable degree of chaos and anxiety aroused. The amendment itself was held at National Assembly. The unresolved disputes rested, however, waiting for another attempt of similar nature. As the recognition propelled this paper, it aimed at reviewing major contending arguments and proposing future actions.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.1
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• pp.77-83
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• 2019

Major causes of industrial accidents include falls and gas leak. The existing safety helmet and smart device combination products are focused on convenience, so the functions to prevent such accidents are insufficient. We developed a smart helmet focusing on fall accident detection and gas leak detection. We also developed management system to manage workers efficiently. Its core function is to detect dangerous conditions of employees, to communicate with managers and to confirm the situations of workers. The effectiveness of the combustible gas measurement capability was verified through experiments. However, since a significant amount of power consumption is founded due to continuous operation of the board and the sensor, countermeasures such as replacing with a large capacity battery are required.

• The Korean Journal of Applied Statistics
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• v.32 no.1
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• pp.83-97
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• 2019

As society develops, the dissemination of microdata has increased to respond to diverse analytical needs of users. Analysis of microdata for policy making, academic purposes, etc. is highly desirable in terms of value creation. However, the provision of microdata, whose usefulness is guaranteed, has a risk of exposure of personal information. Several methods have been considered to ensure the protection of personal information while ensuring the usefulness of the data. One of these methods has been studied to generate and utilize synthetic data. This paper aims to understand the synthetic data by exploring methodologies and precautions related to synthetic data. To this end, we first explain muptiple imputation, Bayesian predictive model, and Bayesian bootstrap, which are basic foundations for synthetic data. And then, we link these concepts to the construction of fully/partially synthetic data. To understand the creation of synthetic data, we review a real longitudinal synthetic data example which is based on sequential regression multivariate imputation.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.546-548
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• 2019

In recent days, vehicle safety technologies for supporting safe vehicle driving attract public attention. This paper proposes multi-log platform based vehicle safety system (MLPVSS) that analyzes multi-log data (i.e., log-data on human, object, and place) and supports vehicle safety. The MLPVSS gathers sensor data and image data on the human, object, and place, and then generates multi-log data that are context-aware data on the human, object, and place. The MLPVSS can detect, predict, and response vehicle dangers. The MLPVSS can contribute to reduce car accidents.

• Journal of the Society of Disaster Information
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• v.17 no.3
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• pp.403-414
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• 2021

Purpose: The purpose of this study is to provide the effective safety management system to prevent similar chemical accidents through accident investigations. Method: Chemical accident prevention and response management systems at the central and local government levels were reviewed, Also, statistical data of chemical accidents occurred in the last 5 years were analyzed. In particular, Two accidents with high accident risk were analyzed. Result: Chemical accidents that have occurred in the last 5 years were analyzed to occur in the order of hydrochloric acid, sulfuric acid, and nitric acid, and concrete safety management improvement measures were derived through investigations of two causes. Conclusion: In this study, we proposed safety management plans in terms of technical and management aspects. The results of this study are expected to be used as effective in preventing and managing chemical accidents.

• Journal of the Korea Convergence Society
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• v.12 no.4
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• pp.43-50
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• 2021

As the frequency of earthquakes in some regions including Pohang City has increased in recent years, the need for countermeasures against earthquakes in Korea is demanded from various aspects. Liquefaction occurred after the earthquake, and local residents' anxiety increased due to the lack of preparation for and coping with the earthquake. In order to cope with these phenomena and relieve the anxiety of local residents, we analyze the limitations of the existing earthquake response system and come up with a method to solve them. Therefore, we propose, implement, and prove the possibility of a one-stop mobile support diffusion system capable of expressing and spreading evaluation-based earthquake information that can actively cope with disaster situations.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.302-306
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• 2016

우리나라는 전 국토의 70%가 산지이고 하천경사가 다른 나라에 비해 상대적으로 급하여 홍수 관리에 매우 불리한 조건을 가지고 있으며, 특히 홍수기간의 집중호우 및 돌발홍수는 인명과 재산의 막대한 피해를 입히고 있다. 최근은 기후변화의 영향으로 집중호우 및 돌발홍수는 증가하는 추세에 있다. 이것은 홍수의 위험성 및 자연재해의 발생을 증대시키므로 이에 대한 하천유역 단위의 홍수량 예측 및 재해방지를 위한 설계기법의 개선과 개발, 신뢰성 있는 수문정보 획득을 위한 정밀 수문조사는 매우 필요한 상황이다. 기후변화에 대응하기 위한 수문조사의 방향은 새로운 국면에 접하였다고 볼 수 있다. 기존의 수문조사 방법을 통해 획득했던 수문량의 초과치를 벗어난 극대값의 수문량 관측 및 측정을 극복하는 문제, 홍수량 산정 및 예측을 위한 새로운 설계기법의 개발 또는 기존 방법의 개선 등 문제 해결을 위한 방향이 모색되어야 한다. 이러한 문제점을 해결하기 위해서는 중 소규모 유역 단위를 대상으로 지속적이고 신뢰성 있는 자료의 획득과 축적이 중요하나 시 공간적으로 모두 충족된 수문자료를 획득하기에는 불가능한 일이다. 따라서, 중 소규모 유역 단위의 대표성 있는 Test-bed 유역(설마천 유역/차탄천 유역)의 운영이 요구되며, 이를 통하여 얻어진 수문자료는 상기에 기술한 문제를 해결 가능하게 한다. Test-bed 유역에서 생성되는 수문자료에는 강우량, 하천수위, 지하수위 및 기상 등의 관측자료와 유량측정성과 자료가 있다. 관측된 수문자료를 이용하여 강우-유출량 분석, 증발산량 분석, 지하수함양량 분석 등 기본적인 수문특성을 분석하였다. 홍수량 예측 설계기법 개선으로는 홍수도달시간 산정방법을 검토하였으며, 최대강우강도-도달시간관계를 이용하여 도달시간을 개발하였다. 그리고 RDAPS 예측강우량과 수문모형을 이용하여 홍수량을 예측할 수 있는 시스템을 구축하였다. 유역 단위의 수문조사를 통해 생성된 수문자료는 다양한 분석과 설계에 응용되므로 지속적인 Test-bed 유역의 운영은 매우 필요한 실정이다.

• Journal of the Korea Institute of Building Construction
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• v.20 no.6
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• pp.537-543
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• 2020

The window cleaning works are manpower-dependent and are performed in an unstable posture at high altitude, so that there is a risk of falling. Therefore, there is an urgent need to improve the safety of workers. In this study, a conceptual design was proposed for the cleaning of exterior windows of a building, and the economic feasibility of the proposed conceptual model was analyzed. The proposed model is designed to avoid protrusions such as window frames, and to be able to respond even if the shapes of the upper and lower parts are different. As a result of analyzing the economic feasibility of the designed conceptual model, the benefit cost ratio was 4.48, which was significantly higher than 1. Therefore, the economic feasibility of the proposed window cleaning device is expected to be sufficient. The results analyzed in this paper will be used in the development and marketing of the window cleaning device.

• 한국사회정책
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• v.20 no.2
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• pp.69-96
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• 2013

This paper is to critically review the economic reasoning of non-sustainability of welfare state due to its intrinsic incentive problems and to see how the nordic welfare state responds to them. The welfare state as a political design of state to pursue equality has social insurance as its main economic function. It survives market failure of private insurance to contribute to human capital investment and industrial restructuring. The universal tax-financed welfare state, however, has the problem of tragedy of commons such as reduced work incentive and work ethics. But, the existing nordic welfare state overcomes it through employment-focused policy arrangements, maintenance of work ethics and benefits moral, incentive mechanism of wage-compression, public educational investment and its complementation with social security. The Nordic model shows that problems of incentive and moral are not about those of theory and reasoning, but about their reality which policies and institutions could respond to.

• Journal of Convergence for Information Technology
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• v.11 no.7
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• pp.84-90
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• 2021

98.8% of accidents occurring in domestic companies are concentrated in small-sized workplaces with fewer than 50 employees. Therefore, this study developed a disaster safety program that can be implemented by small and medium-sized enterprises by comparing and analyzing the safety management system actively used with the laws and regulations related to industrial safety and facilities. The disaster and safety program included the scope of application, organizational structure, risk assessment, emergency response system, education and training, safety equipment provision and program evaluation, and detailed preparation methods and procedures for each item. In addition, items to be aware of when operating a disaster safety program and operational strategies were presented. After that, it was proposed to introduce the research results into the Occupational Safety and Health Act.