• KSCE Journal of Civil and Environmental Engineering Research
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• v.43 no.6
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• pp.821-830
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• 2023

Various studies has tried to unveil causes of cost overrun and schedule delay in the road construction project. However, these causes need standardization due to difference by guidelines, relevant research, and facilities. Therefore, this study identifies and elaborate standard road construction cost and schedule variation factors that can be used in the planning and execution of the project. variation factors have been derived and grouped through literature review and modified and supplemented through expert interview. In addition, the connection with the relevant guidance factors is confirmed and the usability is reviewed by applying actual road construction cases. The factors suggested in this study comprehensively include factors of related guidelines and previous research, more clearly distinguish, support decision making.

• Journal of the Korean Society for Library and Information Science
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• v.42 no.4
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• pp.243-268
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• 2008

This study considers the availability, accessibility, and efficacy of social services for migrant workers. First, it examines migrant workers needs and how they choose to fulfill these. Second, this study grasps about how they can connect the social services and what constructive peculiarities social networks they have by using SNA(Social Network Analysis) it is revealed that migrant workers rely more on informal support groups such as family, friends, co-workers, etc. rather than formal support networks, e.g. those provided by the state. This tendency is demonstrated especially, Libraries as formal supporting organization have no connection related with other organizations. It shows that they have role limited as a supporter of giving information and knowledge in a public.

• Journal of the Korean Geosynthetics Society
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• v.1 no.1
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• pp.53-61
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• 2002

Even though a lot of laboratory and field tests for asphalt pavements using geosynthetics have been conducted recently, any rational and systematic analysis for the economic efficiency of the asphalt pavement systems reinforced by using geosynthetics has not been proposed yet. In this study, the economic analysis considering the traffic characteristics for the glass fiber sheet reinforced asphalt pavement was performed using the Life Cycle Cost Analysis(LCCA) which is commonly used for the economic analysis technique. The economic efficiency for the glass fiber sheet reinforcement and the traffic characteristics was examined by applying the test results from the literature review to the economic analysis model.

• Journal of Digital Convergence
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• v.9 no.4
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• pp.213-222
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• 2011

The purpose of this paper is to propose a smart work implementation strategy of Korean companies. Recently in Korea, the interest in smart work is growing and actively promoting but the introduction of private enterprise strategy is absent. However the smart work has been highlighted several issues. In this paper, among the issues, we studied the strategy for introducing smart work system with respect to the related research and literature on strategies and guidelines that may be introduced to the system. With reference to the actual introduction of the basic directions for the procedure proposed by the Korea Communications Commission, we try to review the operating guides and to propose smart work 2.0 implementation strategy, framework and some procedure.

• Annual Conference of KIPS
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• 2022.05a
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• pp.316-319
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• 2022

도시의 복잡화와 노후화로 인해 신규·대형 재난의 발생 빈도가 늘고 재난의 피해 규모가 커짐에 따라 신속하고 정확한 재난 상황관리가 필요하다. 재난 상황관리의 신속성과 정확성을 높이기 위해 상황관리 의사결정을 지원하기 위한 보다 체계적인 방법의 필요성이 대두되고 있으며, 이를 위해 기존 재난 상황관리 의사결정 지원 방법의 고찰이 선행되어야 한다. 이 논문에서는 재난 상황관리 의사결정 지원을 위한 기존 방법을 비교·검토하고 이를 기반으로 지능형 재난 상황관리 의사결정 지원을 위해 해결해야 할 도전과제를 제안한다.

• Pediatric Infection and Vaccine
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• v.31 no.1
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• pp.55-63
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• 2024

Purpose: A 2-dose varicella vaccination strategy has been introduced in many countries worldwide, aiming to increase vaccine effectiveness (VE) against varicella infection. In this network meta-analysis, we aimed to provide a comprehensive evaluation and an overall estimated effect of varicella vaccination strategies, via a Bayesian model. Methods: For each eligible study, we collected trial characteristics, such as: 1-dose vs. 2-dose, demographic characteristics, and outcomes of interest. For studies involving different doses, we aggregated the data for the same number of doses delivered into one arm. The preventive effect of 1-dose vs. 2-dose of varicella vaccine were evaluated in terms of the odds ratio (OR) and corresponding equal-tailed 95% confidence interval (95% CI). Results: A total of 903 studies were retrieved during our literature search, and 25 interventional or observational studies were selected for the Bayesian network meta-analysis. A total of 49,265 observed individuals were included in this network meta-analysis. Compared to the 0-dose control group, the OR of all varicella infections were 0.087 (95% CI, 0.046-0.164) and 0.310 (95% CI, 0.198-0.484) for 2-doses and one-dose, respectively, which corresponded to VE of 69.0% (95% CI, 51.6-81.2) and VE of 91.3% (95% CI, 83.6-95.4) for 1- and 2-doses, respectively. Conclusions: A 2-dose vaccine strategy was able to significantly reduce varicella burden. The effectiveness of 2-dose vaccination on reducing the risk of infection was demonstrated by sound statistical evidence, which highlights the public health need for a 2-dose vaccine recommendation.

• Journal of the Korean Society for Library and Information Science
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• v.43 no.3
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• pp.85-105
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• 2009

Disagreements between the technical environment and the conventional library catalog have caused a re-clarification of International Cataloguing Principles (ICP). Review is under way to finalize the publication of RDA (Resource Description and Access) in late 2009 by the Joint Steering Committee for Development of RDA. The impending RDA is based on FRBR (Functional Requirements for Bibliographic Records) which re-explains the bibliographic universe focused on entities, attributes and relationships between resources, but tries to maintain MARC as an encoding format for RDA. In this study, firstly FRBR, ICP and RDA were analyzed. Secondly, we propose 3 scenarios of RDA implementation: the future cataloging system based on the FRBR Entity, using a semantic web structure, and the scenario using the existing MARC format with some small changes. Finally, by examining response patterns of overseas bibliographic institutions, we present a set of urgent issues for future directions of bibliographic contro in Korea which includes, but not limited to, relationship between RDA/FRBR and KCR (Korean Cataloging Rules), continuation of KORMARC and authority control.

• The Korean Journal of Archival Studies
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• no.75
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• pp.299-328
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• 2023

This study aims to examine the current procedure of the adequacy review system of public standards for records management developed and disseminated by the National Archives of Korea and to explore improvements to utilize them as basic data to solidify the operation of standards. The study identified the shortcomings of the system with examples of international standards and Korean industrial standards. It also analyzed the history of standardization promoted by the National Archives of Korea. The analysis showed that most of them are simple revisions, such as changes of terminology and standard names according to law amendment. The frequency of standardization by standard also showed a significant difference. In addition, it was found that the adequacy review process or results were not disclosed clearly. As such, the study proposes various improvements to solve these problems, namely, improving standardization for the records management system, establishing detailed procedures for deliberation, and establishing evaluation standards for adequacy reviews.

• Korean Journal of Remote Sensing
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• v.36 no.6_1
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• pp.1277-1290
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• 2020

Water resources which is formed of surface and groundwater, are considered as one of the pivotal natural resources worldwide. Since last century, the rapid population growth as well as accelerated industrialization and explosive urbanization lead to boost demand for groundwater for domestic, industrial and agricultural use. In fact, better management of groundwater can play crucial role in sustainable development; therefore, determining accurate location of groundwater based groundwater potential mapping is indispensable. In recent years, integration of machine learning techniques, Geographical Information System (GIS) and Remote Sensing (RS) are popular and effective methods employed for groundwater potential mapping. For determining the status of the integrated approach, a systematic review of 94 directly relevant papers were carried out over the six previous years (2015-2020). According to the literature review, the number of studies published annually increased rapidly over time. The total study area spanned 15 countries, and 85.1% of studies focused on Iran, India, China, South Korea, and Iraq. 20 variables were found to be frequently involved in groundwater potential investigations, of which 9 factors are almost always present namely slope, lithology (geology), land use/land cover (LU/LC), drainage/river density, altitude (elevation), topographic wetness index (TWI), distance from river, rainfall, and aspect. The data integration was carried random forest, support vector machine and boost regression tree among the machine learning techniques. Our study shows that for optimal results, groundwater mapping must be used as a tool to complement field work, rather than a low-cost substitute. Consequently, more study should be conducted to enhance the generalization and precision of groundwater potential map.

• 한국벤처창업학회:학술대회논문집
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• 2017.11a
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• pp.27-30
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• 2017

2010년 이후 대학을 중심으로 앙트러프러너십 교육의 중요성이 강조되면서, 그동안 창업과 기업가정신 관련 프로그램이 양적으로 급격하게 증가하여 왔다. 또한, 부처들이 모여 '대학창업교육 5개년 계획'을 수립하고 추진하며 그 확산은 더욱 빠르게 진행되었다. 하지만 현실은, 앙트러프러너십 전문교수자의 부족, 창업인프라 편중현상으로 인한 교육혜택의 지역편차 심화, 천편일률적이고 파편적인 교육커리큘럼, 그리고 빠른 변화의 스타트업 환경과 속도를 따라잡지 못하는 대학 내부체계 등 앙트러프러너십 교육의 전반적인 문제점이 심각하게 거론되고 있는 상황이다. 이러한 문제들의 해결을 위한 하나의 방편으로 온라인플랫폼을 바탕으로 하는 앙트러프러너십 교육의 질적향상과 양적확산을 통해 문제를 해결하려는 움직임이 일어나고 있다. 이미 해외에서는 대중을 대상으로 온라인플랫폼을 통한 대규모공개수업 MOOC(이하 '무크')가 확산되고 활발히 연구되고 있다. 온라인플랫폼 기반의 앙트러프러너십 교육 또한 비즈니스 범주에서 주요한 위치에 자리를 잡고 있으며, 효과성에도 좋은 결과를 내며 진행되고 있다. 본 논문의 목적은 대규모 개방 온라인교육 수업과정인 무크에 대한 정확한 개념과 구조적 배경의 이해를 통해, 무크 현상의 본질적 가치와 의미를 발견하고 앙트러프러너십 교육에의 적용방법과 기대효과에 대한 고찰을 하였다. 목적한 연구의 진행을 위해 질적연구방법론을 사용하여 최신문헌 검토 및 참여관찰, 심층면담, 이해당사자 인터뷰를 진행하였고, 근거이론을 기반으로 핵심키워드를 도출하여 연구의 전체적인 맥락을 구성하였다.