• Title/Summary/Keyword: 경제성 분석도구

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Satellite Imagery and AI-based Disaster Monitoring and Establishing a Feasible Integrated Near Real-Time Disaster Monitoring System (위성영상-AI 기반 재난모니터링과 실현 가능한 준실시간 통합 재난모니터링 시스템)

  • KIM, Junwoo;KIM, Duk-jin
    • Journal of the Korean Association of Geographic Information Studies
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    • v.23 no.3
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    • pp.236-251
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    • 2020
  • As remote sensing technologies are evolving, and more satellites are orbited, the demand for using satellite data for disaster monitoring is rapidly increasing. Although natural and social disasters have been monitored using satellite data, constraints on establishing an integrated satellite-based near real-time disaster monitoring system have not been identified yet, and thus a novel framework for establishing such system remains to be presented. This research identifies constraints on establishing satellite data-based near real-time disaster monitoring systems by devising and testing a new conceptual framework of disaster monitoring, and then presents a feasible disaster monitoring system that relies mainly on acquirable satellite data. Implementing near real-time disaster monitoring by satellite remote sensing is constrained by technological and economic factors, and more significantly, it is also limited by interactions between organisations and policy that hamper timely acquiring appropriate satellite data for the purpose, and institutional factors that are related to satellite data analyses. Such constraints could be eased by employing an integrated computing platform, such as Amazon Web Services(AWS), which enables obtaining, storing and analysing satellite data, and by developing a toolkit by which appropriate satellites'sensors that are required for monitoring specific types of disaster, and their orbits, can be analysed. It is anticipated that the findings of this research could be used as meaningful reference when trying to establishing a satellite-based near real-time disaster monitoring system in any country.

A Study on the Impacts of Shipping Service Firm's Perceived Relational Benefits on Switching Barriers and Customer Loyalty -Focusing on Tug Boat Service- (해운기업의 지각된 관계 혜택과 전환장벽 및 고객 충성도의 관계에 관한 실증연구 -예인서비스를 중심으로-)

  • Kim, Ikseong;Kim, Hyundeok
    • Journal of Korea Port Economic Association
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    • v.37 no.4
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    • pp.89-102
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    • 2021
  • The purpose of this paper is to study the impact of shipping service firm's perceived relational benefits on switching barriers and loyalty focusing on tug boat service. To achieve the purpose of the research, literature survey on existing literature, thesis, research report is performed and also reliability analysis, validity test and multiple regression analysis using SPSSWIN 18.0 is used in this research. To verify a research model and hypothesis, a questionnaire survey among employees of shipping companies and shipping agencies was executed. 76 copies of total 200 copies of questionnaires were collected and the number of questionnaire used for empirical analysis was 76 copies. The main results of the study are summarized as below. First, Hypothesis 1 "shipping service firm's perceived relational benefits has a positive impact on the switching barrier" was supported by this study. Second, Hypothesis 2 "shipping service firm's perceived relational benefits has a positive impact on the loyalty" was supported in this research. Finally, Hypothesis 3 "switching barrier has a positive impact on the customer's loyalty" was also supported. Further research can be extended by adding more questionnaires including more shipping service firms all over the nation.

Validity and Reliability of the Korean Version of the London Handicap Scale (한국판 London Handicap Scale의 타당도와 신뢰도)

  • Choi, Yoo-Im;Kim, Won-Ho;Park, Eun-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.11
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    • pp.5102-5109
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    • 2011
  • The purpose of the this study was to identify validity and reliability of the Korean version of the London Handicap Scale (K-LHS) measuring participation restriction for stroke survivors within outpatient rehabilitation setting. 54 stroke patients participated. The reliability was good with a Cronbach's ${\alpha}$ and intraclass correlation coefficient of .791 and .983, respectively. The results of exploratory factor analysis was that the K-LHS was constructed two factors and explanation power was 72.32%. There are significant correlation between K-MBI and subitems of K-LHS (r=-.454 ~ -.819)(p<.01), except economic item. Because the K-LHS seems to be a valid and reliable, thus, it is considered to be appropriate as a tool to measure participation restriction of stroke patients in clinical practice.

사회화 경험과 여성 기업가 활동의도의 관계에 대한 개인 및 맥락 효과: 성별 및 사회안전성의 삼원조절효과

  • Gong, Hye-Won
    • 한국벤처창업학회:학술대회논문집
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    • 2018.11a
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    • pp.239-251
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    • 2018
  • 최근 들어 기업가적 활동을 촉진하는 데 있어 무엇보다도 여성의 경제활동 참여와 사회안전망 구축의 필요성이 제기되고 있는바, 본 연구에서는 사회화경험과 기업가 활동의도의 관계에 대한 맥락적 차이 규명에 초점을 두고, 이들 관계에 대한 성별의 조절 효과와 사회안전망의 삼원조절효과에 대해 규명하고자 한다. 본 연구 목적은 다음과 같다. 첫째, 사회화경험(창업경험, 기업가정신 교육경험)이 기업가 활동의도에 미치는 효과를 규명하고, 이들 관계에 대한 성별의 조절효과를 검증한다. 둘째, 사회화경험 및 기업가정신 교육과 기업가 활동의도의 관계에 대한 성별 조절효과가 사회안전망과 같은 국가 맥락적 차이가 존재하는지에 대해 삼원상호작용 분석을 통해 검증한다. 상기 연구목적을 달성하기 위해 본 연구는 (재)한국청년기업가정신재단에서 제공한 글로벌 기업가정신 추세 리포트(GETR) 자료를 활용하였다. GETR자료는 한국을 포함한 총 20개국(한국, 일본, 중국, 인도네시아, 인도, 싱가포르, 런던, 독일, 러시아, 덴마크, 핀란드, 영국, UAE, 이스라엘, 남아공, 터키, 이집트, 미국, 브라질, 칠레, 호주)을 대상으로 국가별 최소 2,000명을 표본으로 선정해 설문조사가 이루어진 자료이며, 유효 응답자 기준 총 40,388명이 설문에 응답하였다. 그러나 자료 검증과정에서 전체 응답자 중 2,506명이 불성실 응답자 및 이상치로 확인되어 최종 분석과정에서 삭제되었다. 따라서 37,882개의 표본이 최종 분석에 활용되었으며, 여성 17,997명 (47.5%), 남성 19,885명(52.5%)으로 확인되었다. 분석 도구는 Hayes의 Process를 활용하여 사회화 및 교육, 성별, 성별 격차의 삼원상호작용 효과에 대한 분석이 이루어졌다. 분석 결과, 첫째, 창업경험 및 기업가정신 교육경험은 기업가 활동의도에 유의한 영향을 미치는 것으로 나타났다. 둘째, 이들 관계에 대한 성별 조절효과를 살펴본 결과, 성별 조절효과는 기업가정신 교육경험과 기업가 활동의도의 관계에 대해서만 유의한 영향을 미치는 것으로 확인되었다. 구체적으로, 기업가정신 교육경험이 기업가 활동의도에 미치는 긍정적 효과는 여성이 남성보다 더 강한 것으로 나타났다. 마지막으로, 사회안전망의 삼원조절효과를 분석한 결과, 창업경험과 기업가 활동의도의 긍정적 관계는 여성이 남성보다 더 강한 것으로 나타났는데, 이러한 효과는 사회안전망이 높은 집단에서 더 높게 나타나는 것으로 확인되었다. 즉, 과거 창업경험이 있는 여성은 사회안전망이 높다고 인식할 경우 과거 창업경험이 있는 남성보다 기업가 활동의도가 더 많이 증가하는 것이다. 이와 관련된 논의는 본문에 제시하였다.

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Measurement and Practices of Workaholism for Korean Workers (일중독 측정과 실태)

  • Yoon, Jayoung
    • Korean Journal of Labor Studies
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    • v.24 no.1
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    • pp.229-260
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    • 2018
  • Workaholism refers to a state in which work is the center of self, a state in which other life other than work is deemed worthless, and a state in which one feels that his or her life ends when things get lost. There are concerns that South Korea's work-centered institutions, cultures and long-time labor practices expose workers to workaholism. This study identifies the prevalence of workaholism and its risk factors among workers using a representative sample from Korean Labor and Income Panel Study. The results of empirical analysis of the wide range of workaholism showed that 7.0% of Korean workers were work-addicts. Male, workers working long hours, daily workers, employers, the self-employed were more likely to be work-addicts. Those who think that workload is high beyond regular working hours are more likely to be work-addicts. These results were also confirmed by regression analysis. It suggests that policies to shorten working hours and strengthen job and income stability can reduce the risk of workaholism and balance between work and life.

A Study on Mechanism of Intelligent Cyber Attack Path Analysis (지능형 사이버 공격 경로 분석 방법에 관한 연구)

  • Kim, Nam-Uk;Lee, Dong-Gyu;Eom, Jung-Ho
    • Convergence Security Journal
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    • v.21 no.1
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    • pp.93-100
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    • 2021
  • Damage caused by intelligent cyber attacks not only disrupts system operations and leaks information, but also entails massive economic damage. Recently, cyber attacks have a distinct goal and use advanced attack tools and techniques to accurately infiltrate the target. In order to minimize the damage caused by such an intelligent cyber attack, it is necessary to block the cyber attack at the beginning or during the attack to prevent it from invading the target's core system. Recently, technologies for predicting cyber attack paths and analyzing risk level of cyber attack using big data or artificial intelligence technologies are being studied. In this paper, a cyber attack path analysis method using attack tree and RFI is proposed as a basic algorithm for the development of an automated cyber attack path prediction system. The attack path is visualized using the attack tree, and the priority of the path that can move to the next step is determined using the RFI technique in each attack step. Based on the proposed mechanism, it can contribute to the development of an automated cyber attack path prediction system using big data and deep learning technology.

A Case Study for the Social Ventures through using TLBMC(Triple Layered Business Model Canvas) (지속가능한 소셜벤처를 위한 TLBMC(트리플 레이어드 비즈니스 모델 캔버스) 활용 사례 연구)

  • Jeon, Hye Jin;Park, Jae Whan
    • 한국벤처창업학회:학술대회논문집
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    • 2017.08a
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    • pp.55-68
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    • 2017
  • The purpose of this study is to seek ways to enhance sustainability by understanding the business model of social ventures that should be accompanied by social and environmental missions as well as economic missions. To achieve this purpose, We seek to enhance sustainability by analyzing the business model of social venture entrepreneurs. The analysis tool used TLBMC (Triple Layered Business Model Canvas). It is extended from a business model canvas that is widely utilized and recognized in economical terms. The TLBMC is proposed by Alexandre & Raymond (2016) to help achieve a holistic view with horizontal and vertical associations. Based on the TLBMC, we found that each of the social ventures needed additional factors or unnecessary factors, and that they were approaching a different meaning from the beginning to stabilizing phase. And social entrepreneurs have concluded that using TLBMC to provide stakeholder and staff basic understanding of economic, social, environmental and environmental factors, enabling rapid and accurate communication and collaboration. This study will help people who prepare and study social ventures to have economic, environmental, and social perspectives. t could also be used to redefine the direction and value of entrepreneurs operating social ventures, such as vision and mission to help clarify the roles of the organization.

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Survey Experiment on Close-Ended and Open-Ended Questions: 2016 Korean General Social Survey (KGSS) (서베이조사실험을 통한 폐쇄형과 개방형 설문 응답 차이: 2016년 한국종합사회조사)

  • Kim, Jibum;Kim, Sori;Kang, Jeong-han
    • Survey Research
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    • v.18 no.4
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    • pp.127-147
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    • 2017
  • Despite the importance of questionnaires, little survey methodology research on questionnaire design has been conducted in Korea. The purpose of this study was to explore whether two questionnaire forms (close-ended vs. open-ended questions) about 'the most important problem in Korea' elicited similar responses. During the 2016 Korean General Social Survey (KGSS), a random half of respondents were asked the open-ended question form and the remaining half were asked the close-ended question form. While the economy is the most mentioned response (35% vs. 33.2%) to both close-ended and open-ended question forms, there is similarity in the order of highly mentioned responses if we consider that 'politics' is not provided as one of response categories in the close-ended question form. The order of second to fourth response category is crime (24.4%), education (15.4%), and poverty (6.3%) to the closed-ended question form, and politics (10.8%), crime (9.5%), and education (7.6%) to the open-ended question form. Also, the characteristics of respondents who responded with the economy as being the most important are slightly different between the two halves in terms of age, household income, and satisfaction with economic condition. Our findings suggest that we need to be careful when we adopt questions developed in other countries and to consider using survey experiments in pre-testing questionnaire items.

Study about Research Data Citation Based on DCI (Data Citation Index) (Data Citation Index를 기반으로 한 연구데이터 인용에 관한 연구)

  • Cho, Jane
    • Journal of the Korean Society for Library and Information Science
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    • v.50 no.1
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    • pp.189-207
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    • 2016
  • Sharing and reutilizing of research data could not only enhance efficiency and transparency of research process, but also create new science through data integrating and reinterpretationing. Diverse policies about research data sharing and reutilizing have been developing, along with extending of research evaluating spectrum that across research data citation rate to social impact of research output. This study analyzed the scale and citation number of research data which has not been analyzed before in korea through data citation index using Kruskal-Wallis H analysis. As result, genetics and biotechnology are identified as subject areas which have most huge number of research data, however the subject areas that have been highly cited are identified as economics and social study such as, demographic and employment. And Uk Data Archive, Inter-university Consortium for Political and Social Research are analyzed as data repositories which have most highly cited research data. And the data study which describes methodology of data survey, type and so on shows high citation rate than other data type. In the result of altmetrics of research data, data study of social science shows relatively high impact than other areas.

Information Sources and Use of the UN Specialized Agencies (국제연합 전문기구의 정보원과 이용에 관한 연구)

  • Lee, Sook-Hee
    • Journal of the Korean Society for Library and Information Science
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    • v.38 no.2
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    • pp.5-27
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    • 2004
  • The purpose of this study is to enhance the access and the use of international information sources by analyzing the types and the characteristics of information services and resources of the UN specialized agencies. A brief review of the goals and activities of the 16 specialized agencies involving every aspects of international affairs, such as agriculture, food standards, alleviating poverty, financial stability, labor conditions and health care, are presented with the discussions of the useful documents and publications available at the each agency's WWW page as well as access tools for the resources and information services of the agencies. Finally, some suggestions for more effective international information services are made.