• 한국ITS학회 논문지
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• 제7권4호
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• pp.1-12
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• 2008

대중교통시설 및 수단간의 비효율적 교통연계에 따른 환승불편으로 인한 대중교통 이용률 저하와 국가 교통시설의 운영효율성 개선을 위하여 IT와 정보통신 등 첨단기술을 활용하여 대중교통 서비스 고급화 방안에 대한 검토가 필요하다. 본 연구에서는 사용자 위치기반 환승정보서비스를 제안하며 국가 ITS 아키텍쳐 개발방법론을 준용하여 사용자 위치기반 환승정보서비스를 위한 개념 및 요구사항 도출, 세부 사용자 서비스 정의, 서브시스템 도출, 논리아키텍척를 제시하였다. 환승교통센터와 주차유도 및 보행자경로안내서비스 서브시스템 논리아키텍쳐는 모바일 매체를 활용한 다양한 서비스 컨텐츠 개발과 ISP, TSP 등 Contents Provider의 비즈니스 모델 창출에 기여할 것으로 판단된다. 아울러, 대중교통의 연계 환승은 도시규모나 대중교통 수단유형에 따라 각각의 특성이 차별화 되므로 본 연구에서 제시한 기본 개념을 바탕으로 대중교통 및 환승정보 서비스를 위한 다양한 유형의 서비스 모델 제시가 가능할 것으로 기대된다.

• 한국실내디자인학회논문집
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• 제20권5호
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• pp.236-244
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• 2011

As the digital information infrastructure is established for the public library system in the contemporary age, expectations and demands surrounding the public library system are growing rapidly as the place of exchange and enjoyment of information and culture, and as the place of life-long learning. In addition, a new kind of information & culture services are needed to meet the demands of contemporary men and women, who are exploring information as the information environment undergoes rapid changes - from increase in the volume of digital publications, to increase in the usefulness of online information resources, to strides made in the media industry. The public library will continue to play its role and function by providing to all users all available information, whether it's available online or offline, whether it's in a physical format or in a digital format. As such, design and management of a space appropriate as a new information environment are needed. It is deemed that an information infrastructure for Daegu that can improve the quality of life in the region and can increase user accessibility to information in this information age is needed, as well as reorganization of the pertinent environment. Therefore more public libraries have to be built in Daegu as a necessity, and it is urgently needed that the information services be expanded through an organic linkage between local libraries such as between the central library and the branch libraries. This paper aims to provide basic data for building of public libraries in Daegu. To establish an information infrastructure for Daegu, a direction is given for the establishment of a local network of public libraries and ways for improvement are explored. This paper is significant in that, first, it helps in the planning of a local network of public libraries, which plays a crucial role in improving accessibility to information as well as the level of their use; and second, it helps in setting up guidelines for spatial configuration of the user space. As for the method, quantitative review of the information environment is to be done by analyzing the present situation of the public library network in Daegu from the perspectives of region, facility, and space, in order to present a method of user-centered spatial configuration that meets the changes in social roles and forms of information in the contemporary society.

• The Journal of Asian Finance, Economics and Business
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• 제8권8호
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• pp.541-552
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• 2021

The purpose of this research is to investigate the mediating role of performance information use in the relationship between result-oriented culture and organizational performance. The data were collected from chief accountants and managers working in public-sector organizations in Vietnam. The analysis was based on the 197 completed questionnaires by using Partial Least Squares Structural Equation Modeling (PLS-SEM). For the test research model and hypotheses, the supporting tool is SmartPLS 3 software. Research findings show that result-oriented culture is positively associated with organizational performance, and that performance information use is a mediating mechanism that explains how a result-oriented culture leads to higher performance in public organizations. The findings of this study suggest that the results-oriented culture, not only directly improves organizational performance, but also indirectly does so by the use of performance information. This study provides evidence for theoretical understanding of the impact of result-oriented culture on the performance of public-sector organizations through performance information use, and suggests practical implications for public organizations in applying result-oriented culture to foster using performance measurement and improve organizational performance. In order to achieve good performance, public-sector organizations need to create and spread result-oriented culture and enhance the use of performance information for decision-making.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권7호
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• pp.2703-2718
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• 2015

Nowadays, public cloud storage is gaining popularity and a growing number of users are beginning to use the public cloud storage for online data storing and sharing. However, how the encrypted data stored in public clouds can be effectively shared becomes a new challenge. Proxy re-encryption is a public-key primitive that can delegate the decryption right from one user to another. In a proxy re-encryption system, a semi-trusted proxy authorized by a data owner is allowed to transform an encrypted data under the data owner's public key into a re-encrypted data under an authorized recipient's public key without seeing the underlying plaintext. Hence, the paradigm of proxy re-encryption provides a promising solution to effectively share encrypted data. In this paper, we propose a new certificate-based proxy re-encryption scheme for encrypted data sharing in public clouds. In the random oracle model, we formally prove that the proposed scheme achieves chosen-ciphertext security. The simulation results show that it is more efficient than the previous certificate-based proxy re-encryption schemes.

• 재무관리논총
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• 제3권1호
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• pp.233-265
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• 1996

We examine the impact of public and private information on price movements using the thirty DJIA stocks and twenty-one NASDAQ stocks. We find that the standard deviation of daily returns on information days (dividend announcement, earnings announcement, insider purchase, or insider sale) is much higher than on no-information days. Both public information matters at the NYSE, probably due to masked identification of insiders. Earnings announcement has the greatest impact for both DJIA and NASDAQ stocks, and there is some evidence of positive impact of insider asle on return volatility of NASDAQ stocks. There has been considerable debate, e.g., French and Roll (1986), over whether market volatility is due to public information or private information-the latter gathered through costly search and only revealed through trading. Public information is composed of (1) marketwide public information such as regularly scheduled federal economic announcements (e.g., employment, GNP, leading indicators) and (2) company-specific public information such as dividend and earnings announcements. Policy makers and corporate insiders have a better access to marketwide private information (e.g., a new monetary policy decision made in the Federal Reserve Board meeting) and company-specific private information, respectively, compated to the general public. Ederington and Lee (1993) show that marketwide public information accounts for most of the observed volatility patterns in interest rate and foreign exchange futures markets. Company-specific public information is explored by Patell and Wolfson (1984) and Jennings and Starks (1985). They show that dividend and earnings announcements induce higher than normal volatility in equity prices. Kyle (1985), Admati and Pfleiderer (1988), Barclay, Litzenberger and Warner (1990), Foster and Viswanathan (1990), Back (1992), and Barclay and Warner (1993) show that the private information help by informed traders and revealed through trading influences market volatility. Cornell and Sirri (1992)' and Meulbroek (1992) investigate the actual insider trading activities in a tender offer case and the prosecuted illegal trading cased, respectively. This paper examines the aggregate and individual impact of marketwide information, company-specific public information, and company-specific private information on equity prices. Specifically, we use the thirty common stocks in the Dow Jones Industrial Average (DJIA) and twenty one National Association of Securities Dealers Automated Quotations (NASDAQ) common stocks to examine how their prices react to information. Marketwide information (public and private) is estimated by the movement in the Standard and Poors (S & P) 500 Index price for the DJIA stocks and the movement in the NASDAQ Composite Index price for the NASDAQ stocks. Divedend and earnings announcements are used as a subset of company-specific public information. The trading activity of corporate insiders (major corporate officers, members of the board of directors, and owners of at least 10 percent of any equity class) with an access to private information can be cannot legally trade on private information. Therefore, most insider transactions are not necessarily based on private information. Nevertheless, we hypothesize that market participants observe how insiders trade in order to infer any information that they cannot possess because insiders tend to buy (sell) when they have good (bad) information about their company. For example, Damodaran and Liu (1993) show that insiders of real estate investment trusts buy (sell) after they receive favorable (unfavorable) appraisal news before the information in these appraisals is released to the public. Price discovery in a competitive multiple-dealership market (NASDAQ) would be different from that in a monopolistic specialist system (NYSE). Consequently, we hypothesize that NASDAQ stocks are affected more by private information (or more precisely, insider trading) than the DJIA stocks. In the next section, we describe our choices of the fifty-one stocks and the public and private information set. We also discuss institutional differences between the NYSE and the NASDAQ market. In Section II, we examine the implications of public and private information for the volatility of daily returns of each stock. In Section III, we turn to the question of the relative importance of individual elements of our information set. Further analysis of the five DJIA stocks and the four NASDAQ stocks that are most sensitive to earnings announcements is given in Section IV, and our results are summarized in Section V.

• 지식경영연구
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• 제18권3호
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• pp.231-246
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• 2017

As an interest in the efficiency of public sector expenditures has spread across the world, Korea has operated a self-evaluation system for government projects as a part of the performance-based budget system. However, an evaluation system for public information technology project has been criticized for its lack of validity, which stems from the uniformity of performance management. This study draws insight from knowledge management literature in an attempt to address the problems with the extant performance evaluation system in public agencies. To realize benefits from IT investment, an agency needs to develop its own performance management model for information systems projects, with a focus on the interaction of IT and organizational system. The knowledge management-based framework for IT projects was verified through a case study, with which we discussed the applicability of knowledge management to the evaluation of public information systems projects.

• 한국문헌정보학회지
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• 제42권2호
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• pp.309-325
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• 2008

본 연구에서는 공공도서관의 새로운 역할로 제시된 지식정보격차해소의 개념 및 현황 등을 파악하고, 공공도서관이 어떤 역할을 해야 하는지 고찰해 보았으며, 기존의 통계 데이터를 활용해 공공도서관과 지방자치단체 재정자립도의 관계, 지식정보취약계층과 공공도서관 활용도 관계를 분석해 보았다. 이를 통해 공공도서관이 지식정보격차해소 역할을 강화하기 위한 방안을 모색하는데 필요한 기초적 논점을 제시하고자 하였다.

• 한국기록관리학회지
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• 제14권4호
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• pp.177-198
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• 2014

본 연구는 2013년 12월 "저작권법"에 도입된 공공저작물의 자유이용 규정의 의미와 세부사항을 기록정보서비스 측면에서 분석한 결과 다음과 같은 한계가 있음을 파악하였다. 첫째, 공공저작물 자유이용규정이 적용되는 기관이 매우 제한적이어서 기록관리법 적용기관을 포괄하지 못하고 있다. 둘째, 국가, 지방자치단체, 공공기관이 생산한 업무상저작물 대다수가 미공표기록임에도 불구하고 자유이용 공공저작물이 되기 위해 공표를 요건으로 하는 것은 대상 저작물의 범위를 지나치게 제한하는 것이다. 이러한 문제점을 개선하기 위하여 각급 학교의 업무상저작물을 자유이용 범위에 포함시키고, 공표 요건을 공개요건으로 변경하는 법개정이 필요함을 제안하였다. 또한 향후 기록관리기준표나 현용 및 준현용기록의 메타데이터 표준에 저작권 관리 항목을 추가하여 기록물 등록과 동시에 저작권 정보를 관리할 것을 제안하였다.

• 디지털융복합연구
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• 제5권1호
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• pp.117-130
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• 2007

This paper examines whether there exists discrimination of the information usage pattern between tenants of permanent and temporary public rental housing in Korea. Moreover, we focus to examine on that matters between two groups, $7{\sim}12$ pyeongs and $11{\sim}24$ pyeongs that indicate permanent and temporary public rental housing respectively. The results derived in this paper can be summarized as follows: there exists statistical significance in using computer, internet, communication and broadcasting, on the other hand, insignificance in using satellite communication and telephone between them. The implication of this results shows that as widen income gap, also widen gaps in using computer and internet between them. Thus government public rental housing policy should focus to make narrow income gap to diminish information gap between those groups.

• 한국문헌정보학회지
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• 제49권3호
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• pp.393-412
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• 2015

본 연구의 목적은 한국과 일본의 공공도서관의 사례 분석을 통해 지역 지식정보서비스의 발전 방안을 제시하기 위한 것이다. 이를 위해 지역 지식서비스와 관련된 문헌분석, 사례조사를 진행하고 지역 공공도서관 홈페이지를 중심으로 조사 분석하였다. 이러한 분석을 통해 지역 지식정보서비스를 위한 발전 방안으로 이용자 지향적 서비스, 내부 협력, 외부 네트워크 협력, 홍보, 인식의 개선 등을 제안하였다. 본 연구는 앞으로 한국 공공도서관의 지역 지식정보서비스 운영의 기초자료로 활용될 수 있을 것이다.