• 공학교육연구
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• 제15권4호
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• pp.101-108
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• 2012

The purpose of this study is to infer how is the effect of a governmental funding project to graduate schools by taking an example of World Class University Project's potential impact on the change of world university rankings in an international university ranking survey. Systematic results show that WCU contributes to improving academic peer reviews for both individual and institutional standings and discipline-based rankings. The potential effect of improving world rankings of participating universities could be ascribed to relatively higher weight of the survey to international peer review and invitation of world class scholars to the participating universities, which is a core device of the project. This implies a need to affirmatively utilize WCU foreign scholars over the course of facilitating international academic networking. The results should also be taken into consideration by universities and the government when developing evaluation systems and restructuring the project.

• International Journal of Internet, Broadcasting and Communication
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• 제14권4호
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• pp.52-57
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• 2022

In this study, keywords from representative online portal sites such as Naver, Google, and Youtube were collected based on text mining analysis technique using Textom to check the changes in metqaverse after COVID-19. before Corona, it was confirmed that social media platforms such as Kakao Talk, Facebook, and Twitter were mentioned, and among the four metaverse, consumer awareness was still concentrated in the field of life logging. However, after Corona, keywords from Roblox, Fortnite, and Geppetto appeared, and keywords such as Universe, Space, Meta, and the world appeared, so Metaverse was recognized as a virtual world. As a result, it was confirmed that consumer perception changed from the life logging of Metaverse to the mirror world. Third, keywords such as cryptocurrency, cryptocurrency, coin, and exchange appeared before Corona, and the word frequency ranking for blockchain, which is an underlying technology, was high, but after Corona, the word frequency ranking fell significantly as mentioned above.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 A
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• pp.113-115
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• 2003

The electric power industry throughout the world is undergoing considerable changes from the vertically integrated utility structure to the deregulated market. However, the deregulated electricity market is operated with respect to theory of economical efficiency, and therefore, the system operator requires data with fast contingency ranking for security of the bulk power system. This paper presents fast calculation method for determining contingency ranking using the weather dependant probabilistic risk index(PRI). The probabilistic risk index can be classified into normal weather and adverse weather. This paper proposes calculation method using the probabilistic risk index in determining contingency ranking requiring for security under the deregulated electricity market.

• International Journal of Computer Science & Network Security
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• 제21권11호
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• pp.49-58
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• 2021

Globalization of higher education deepens the competition in the global educational services market. Competition between higher education institutions is based on the use of a wide range of activities and tools that are constantly evolving and becoming more complex. Digitalization significantly transforms the approaches to competition between universities in educational, research and marketing activities. Digital technologies are becoming an integral part of this competition. In addition, in the current conditions of globalization of the scientific and educational space, numerous rankings of universities have become an important tool of the competition; the most significant rankings of universities are as follows: Academic Ranking of World Universities (China), Times Higher Education Rankings of Universities (Great Britain), Webometrics (Spain). In the article, the key principles of the formation of world rankings of universities are analyzed, the main sources of information resources for their compilation are determined. The authors have concluded that the improvement of the position of educational institutions in the world rankings of universities should be implemented within the framework of the state educational policy. The key positive effects of universities due to increasing the competitiveness level of the national higher education system are specified.

• International Journal of Advanced Culture Technology
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• 제5권4호
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• pp.51-56
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• 2017

In every Summer and Winter, there open soccer transfer markets. And these markets draw huge attention from soccer fans and other ordinary people all around world. This phenomenon might indicate great interest of people from the amount of news, blog articles, public messages and replies from online community and forums about popular players and clubs of many leagues. Especially, transfer markets in the year 2017 have generated many gossips than before. In this research, we performed keyword analysis and ranking of news and messages collected and analyzed from online news sites and online forum sites, in order to investigate who and what clubs are mainly discussed.

• Journal of applied mathematics & informatics
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• 제15권1_2호
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• pp.333-341
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• 2004

In the real world there are many linear programming problems where all decision parameters are fuzzy numbers. Several approaches exist which use different ranking functions for solving these problems. Unfortunately when there exist alternative optimal solutions, usually with different fuzzy value of the objective function for these solutions, these methods can not specify a clear approach for choosing a solution. In this paper we propose a method to remove the above shortcoming in solving fuzzy number linear programming problems using the concept of expectation and variance as ranking functions

• 한국컴퓨터정보학회논문지
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• 제21권1호
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• pp.9-16
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• 2016

In this paper, we present a performance evaluation agent based on fuzzy cluster analysis and validity measures. The proposed agent is consists of three modules, fuzzy cluster analyzer, performance evaluation measures, and feature ranking algorithm for feature selection step in CAD system. Feature selection is an important step commonly used to create more accurate system to help human experts. Through this agent, we get the feature ranking on the dataset of mass and calcification lesions extracted from the public real world mammogram database DDSM. Also we design a CAD system incorporating the agent and apply five different feature combinations to the system. Experimental results proposed approach has higher classification accuracy and shows the feasibility as a diagnosis supporting tool.

• 응용통계연구
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• 제32권5호
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• pp.763-782
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• 2019

텍스트 문서 집합에 대한 정보검색에서는 주어진 질의에 부합하는 각 문서의 적합도 확률을 계산하고 이 확률이 높은 것부터 낮은 순으로 문서 순위를 정하여 사용자에게 제공한다, 각 문서의 적합도 확률 계산에 많이 사용되는 모형은 단어들이 확률적으로 독립이라는 가정 하에 확률을 추정한다. 이 모형은 단어들의 결합 확률을 계산하는 것이 현실적으로 어렵다는 점에서 많이 이용되고 있지만 질의에 사용되는 단어들이 대개 서로 관련성을 가지고 있다는 사실을 고려하고 있지 않다. 본 논문에서는 단어 자질들의 의존 구조를 고려하여 문서의 적합도 확률을 계산하기 위하여 단어들의 결합 패턴의 확률을 다항분포 모형으로 가정하고, 최대 엔트로피 방법으로 확률을 추정하여 문서 순위를 매기는 정보검색 모형을 제안한다. 여러 가지 다항분포 상황에서 시뮬레이션 실험을 한 결과 변수들의 독립을 가정한 모형보다 더 우수한 추정 결과를 보여 준다. 실제 LETOR OHSUMED 데이터 이용한 문서 순위 매기기 실험의 결과도 더 나은 검색 결과를 보여 준다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권9호
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• pp.4323-4326
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• 2016

Background: The cancer mortality-to-incidence ratio (MIR) has been established as an important measure of health disparities in local and global circumstances. Past work has corroborated a linkage between the colorectal cancer MIR and the World Health Organization (WHO) Health System ranking. The literature further documents many Asian countries having incomplete cancer registries and a lack of comprehensive colorectal cancer screening guidelines. Materials and Methods: The colorectal cancer MIR values for 23 Asian countries were calculated from data obtained from the 2012 GLOBOCAN database. The 2000 World Health Organization (WHO) Health System rankings were used as a proxy for health system infrastructure and responsiveness. A regression equation was calculated with the MIR as the dependent variable and the WHO Health System ranking as the independent variable. Predicted MIR values were next calculated based on the regression results. Actual MIR values that exceeded 0.20 from the predicted MIR were removed as 'divergent' points. The regression equation was then re-plotted. Goodness-of-fit for both regressions was assessed by the R-squared test. Results: Asian countries have a relatively wide colorectal cancer MIR range, from a minimum of 0.24 to a maximum of 0.86. For the full dataset, the adjusted R-squared value for this regression was 0.53. The equation was then used to calculate a predicted MIR, whereby two data points were identified as 'divergent' and removed. The adjusted R-squared for the edited dataset increased to 0.66. Conclusions: Asian countries have a marked range in their colorectal cancer MIR values and there is a strong correlationwith the WHO Health System ranking. These results corroborate the contribution of the MIR as a potentially robust tool in monitoring changes in colorectal cancer care for Asian nations.

• 한국항만경제학회지
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• 제35권1호
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• pp.117-138
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• 2019

세계적 수준인 우리나라 해운물류산업에 비해, 해운물류 연구 실적에 대한 평가는 다소 불분명하다. 본 연구는 우리나라 해운물류분야의 상위 30명의 연구자와 30개의 기관을 분석했다. 분석은 2000년부터 2015년까지 16년간 해운 및 운송 관련 65개 SSCI 및 SCI 학술지에 게재된 논문을 대상으로 했다. 순위를 산정하기 위해 다음과 같은 세 가지 지표를 사용했다: 1) 논문의 수, 2) 저자들의 기여도를 반영한 가중 점수(Weighted Score), 3) 학술지의 Impact factor를 고려한 영향력 점수. 시간의 흐름에 따른 각 기관과 연구자의 순위 변화를 5년을 주기로 측정했다. 또한, 우리나라 해운물류 연구가 세계 해운물류 분야에서 차지하는 비중을 분석하였다. 끝으로, 우리나라 연구자들의 방법론적 선호도를 세계 연구자들과 비교 및 분석하였다.