• Journal of Information Science Theory and Practice
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• 제1권1호
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• pp.42-53
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• 2013

Timely access to quality healthcare information during an outbreak plays an important role in curtailing its spread. The aim of this study was to investigate the information needs and seeking behavior of the general public in Singapore during the H1N1 pandemic. A pre-tested questionnaire was used for data collection. The convenience snowball sampling method was used and 260 working adults and tertiary-level students participated in this study. The most crucial information needs of a majority of the participants were: symptoms of H1N1, causes of the infection, preventive measures, and possible treatments. Data analysis also revealed that mass media such as television, newspapers, and radio were most frequently used for seeking the needed information. The use of human information sources was also quite high while only a small number of the respondents accessed online news and healthcare websites. About three-quarters of the participants indicated that the gathered information helped them to stay vigilant and take necessary precautionary measures. A major problem identified by the participants in using H1N1 information was the lack of understanding of certain terms used in public communications. This paper suggests certain measures for strengthening health information communication during future outbreaks.

• Journal of Information Science Theory and Practice
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• 제6권3호
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• pp.45-60
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• 2018

Research performance evaluation in Korean universities follows strict guidelines that specify scoring systems for publication venue categories and formulas for co-authorship credit allocation. To find out how the standards differ across universities and how they differ from bibliometric research evaluation measures, this study analyzed 25 standards from major Korean universities and rankings produced by applying standards and bibliometric measures such as publication and citation counts, normalized impact score, and h-index to the publication data of 195 tenure-track professors of library and information science departments in 35 Korean universities. The study also introduced a novel impact score normalization method to refine the methodology from prior studies. The results showed the university standards to be mostly similar to one another but quite different from citation-driven measures, which suggests the standards are not quite successful in quantifying the quality of research as originally intended.

• 대한인간공학회지
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• 제32권2호
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• pp.167-177
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• 2013

Objective: This study aims to compare the usefulness of subjective measures which are comprised of existing methods like NASA-TLX, Bedford-scale and ZEIS and newly developed method like DALI in measuring drivers' mental workload in terms of validity, sensitivity and diagnosticity. Background: Nowadays, with the development of intelligent vehicle and HMI, mental workload of driver has become more and more important. For this reason, the studies on drivers' mental workload about driving situation and the use of information technology equipment such as mobile phones and navigations were conducted intensively. However, the studies on measuring drivers' mental workload were rarely conducted. Moreover, most of studies on comparison of subjective measures were used with performance based measure. However, performance based measures can cause distraction effect with subjective measures. Method: Participants (N=19) were engaged in a driving simulation experiment in 2 driving contexts (downtown driving and highway driving context). The experiment has 2 sessions according to driving contexts. The level of difficulties by driving contexts were adjusted according to existence of intersections, traffic signs and signals, billboards and the number of doublings. Moreover, as criteria of concurrent validity and sensitivity, the EEG data were recorded before and during the sessions. Results: The results indicated that all subjective methods were correlates with EEG in high-way driving. On the contrary to this, in downtown driving, all subjective methods were not correlates with EEG. In terms of sensitivity, multi-dimensional scales (NASA-TLX, DALI) were the only ones to identify differences between high way and downtown driving. Finally, in terms of diagnosticity, DALI was the most suitable method for evaluating drivers' mental workload in driving context. Conclusion: The DALI as newly developed method dedicated to evaluate driver's mental workload was superior in terms of sensitivity and diagnosticity. However, researchers should consider the characteristics of each subjective method synthetically according to research objective by selecting the method in subjective measures. Application: The results of this study could be applied to the intelligent vehicle and next generation of HMI design to decrease mental workload of driver and for the development of new subjective method in vehicle domain.

• 정보관리학회지
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• 제31권3호
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• pp.153-179
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• 2014

이 연구의 목적은 공동연구 네트워크에서 연구자의 영향력과 입지를 분석하는데 사용되는 중심성 지수들의 특징에 대해서 고찰하는 것이다. 전통적인 이진 네트워크 중심성 지수로는 연결정도중심성, 매개중심성, 근접중심성, 페이지랭크를 다루었고, 공동연구 네트워크에서의 중심성을 측정하기 위해서 개발되었거나 사용된 가중 네트워크 중심성 지수로는 삼각매개중심성, 평균연관성, 가중페이지랭크, 공동연구 h-지수와 공동연구 hs-지수, 복합연결정도중심성, c-지수에 대해서 살펴보았으며, 새로운 지수로 제곱근합 지수 SSR을 제안하였다. 이들 12종의 중심성 지수를 건축학, 문헌정보학, 마케팅 분야의 세 가지 공동연구 네트워크에 적용해본 결과 각 지수들의 특성과 지수 간 관계를 파악할 수 있었다. 분석 결과 공동연구 네트워크에서 공동연구 범위와 공동연구 강도를 모두 고려하기 위해서는 가중 네트워크 중심성 지수를 사용해야 하는 것으로 나타났다. 특히 공동연구 범위와 강도를 모두 고려하는 전역중심성을 측정하기 위해서는 삼각매개중심성 지수를 사용하고, 지역중심성을 측정하기 위해서는 SSR 지수를 사용하는 것이 바람직하다고 제안하였다.

• 한국컴퓨터정보학회논문지
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• 제25권11호
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• pp.195-200
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• 2020

우리나라는 2011년 3월에 「공익신고자 보호법」을 제정하여 민간부문에서 발생하는 공익침해 행위로부터 공익신고자를 보호하고 있다. 대부분의 공익침해행위는 조직 내부에서 은밀하게 이루어지고 있어 조직 내부의 문제점을 잘 알고 있는 조직 구성원들의 신고로 인하여 외부에 알려지게 된다. 그러나 공익신고자는 신고로 인하여 불이익을 받게 되므로 신고를 주저하게 된다. 또한 실질적인 보호조치가 미흡하여 신고자를 효과적으로 보호하기 위한 비밀보장, 신변보호, 책임감면, 불이익조치 금지 등 제도적 장치를 강화하는 방안이 필요하다. 따라서 공익신고자 보호의 취지에 맞게 공익신고자에 대한 실질적인 보호조치가 필요하며 그에 상응하는 보상체계를 확대하는 방안도 필요할 것이다. 이에 본 연구에서는 현행 우리나라 공익신고자 보호제도에 대한 주요 내용을 검토하고, 공익신고자의 보호 등을 위한 합리적인 개선방안을 제시하고자 한다.

• 한국문헌정보학회지
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• 제40권3호
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• pp.191-214
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• 2006

최근 일부 계량서지학 연구에서 사회 네트워크 분석 분야의 도구인 중심성 분석 기법을 도입하려는 시도가 나타나고 있다. 그런데 사회 네트워크를 대상으로 개발된 중심성 척도는 노드간 연결에 대한 가중치를 반영하지 않는 단점이 있다 이 연구에서는 가중 네트워크인 계량서지적 자료에 대해서 중심성을 분석할 수 있는 새로운 척도를 네 가지 제시하였다. 제안된 척도의 유용성을 검증하기 위해서 저자동시인용 네트워크. 용어 동시출현 네트워크, 웹사이트 동시링크 네트워크의 세 가지 실제 자료에 대해서 중심성 분석을 수행하였다. 분석 결과에서는 제안된 중심성 척도가 계량서지적 네트워크를 대상으로 개별 노드의 입지와 영향력을 파악하는데 있어서 매우 유용함이 확인되었다

• 통상정보연구
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• 제6권3호
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• pp.203-224
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• 2004

The purpose of this study is to review and analyze the protection measures for the importer's interests through the utilization of electronic delivery order(e-D/O) with the implementation of trade facilitation measures such as the simplification of customs procedures by the Korea Customs Service. The Korea Customs Service has been introducing several custom facilitation measures through the use of EDI system in the export and import processes. Korea has also already achieved a comparable level of sophistication in trade automation and custom simplification field. However, the full benefits of the trade automation and custom simplification measures have not yet achieved through the frequent illegal delivery of the imported goods in the bonded areas. Therefore, it is argued in this study that the introduction and the full utilization of e-D/O would help to reap the trade automation and custom simplification measures in Korea. In conclusion, it is emphasized that it would be very crucial for the Korean government to introduce the trusted repository for distribution of the electronic trade-related documents and the construction of the one stop single window platform for the trade and customs facilitation.

• 통상정보연구
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• 제9권2호
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• pp.307-325
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• 2007

Examining the standards of review adopted by the dispute settlement body of the WTO in its decision on safeguard measures, the Appellate Body offers no coherent guidance or theory as to the legitimation of the safeguard measures adopted by the domestic authorities. It faults the lack of reasoned and adequate explanation in the national authorities' decision to impose safeguard measures, yet its own explanation of the permissible role for safeguard measure could hardly be less instructive. The Appellate Body has consistently emphasized fidelity to text in its decision but that approach can not work properly when the text is fundamentally deficient from the viewpoints that neither Article XIX nor the safeguard Agreement establish a coherent foundation for safeguard measures due to their vague and abstract provision. Without any coherent theory on guidance as to the legitimation of the safeguard measures, it would be absurd to expect WTO members to produce a reasoned and adequate explanation as to how their safeguard measures are in compliance with the WTO roles. In the absence of a thorough renegotiation for the proper operation of the WTO safeguard system, which seems quite unlikely for the foreseeable future, perhaps the unique method out of the current predicament is for the Appellate Body to lead a movement in establishing a sensible common law of safeguards, drawing on extra-textual guidance including the standards of review about their proper role in the WTO safeguard mechanism.

• The Journal of Asian Finance, Economics and Business
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• 제8권2호
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• pp.25-39
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• 2021

This purpose of this study is to investigate the association among mutual funds (MFs) risk measures and return parameters, evaluate mutual fund performance and also explore the best appropriate mutual fund performance measure for investment in Pakistan. Therefore, thirty-five mutual funds have been selected for the period 2007-2015. The Sharpe, Treynor, Jensen Alpha, Information ratio and Fama's Net Selectivity measures has been used to analyze MF performance. Our study findings show significant positive relation exist between Sharpe and Jenson alpha & information ratio (IR); Treynor ratio is negatively correlated to Jenson alpha and Jenson alpha is positively allied with IR. Moreover, association among performance measures, Fama's net selectivity is a major driver in leading to other measures but Sharpe and IR lead to Treynor ratio as well. Furthermore, performance measures are ranked in accordance standard deviation with the arrangement of Fama's net selectivity at top, Jenson Alpha at second, Sharpe ratio at third, IR at fourth and Treynor ratio at fifth position according to risk parameters in Pakistan. Overall, Jensen Alpha measure appears to be the best suitable mutual fund performance measure in Pakistan due to its practical nature. Finally, the Pakistani stock market index KSE100 (as benchmark) performs better than MF industry of Pakistan.

• Journal of the Korean Statistical Society
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• 제35권2호
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• pp.213-224
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• 2006

We investigate the influence of subjects or observations on regression coefficients of generalized estimating equations using the influence function and the derivative influence measures. The influence function for regression coefficients is derived and its sample versions are used for influence analysis. The derivative influence measures under certain perturbation schemes are derived. It can be seen that the influence function method and the derivative influence measures yield the same influence information. An illustrative example in longitudinal data analysis is given and we compare the results provided by the influence function method and the derivative influence measures.