• Management & Information Systems Review
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• v.31 no.4
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• pp.83-108
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• 2012

College students show keen interest in advertising contest, and some contests link with class so that students participate the contest as a class assignment. But the interest is not just limited to students but to businesses. Until now five studies was made on this subject, and major findings of those dissertations are given to activating contest participation, corporate ethics and industrial-educational cooperation. It seems not enough to explain the over-heated phenomenon with the results, so that more research should be made on advertising contest. Required studies with this subject are analyzing the effectiveness relating between investment and result, theoretical establishment by empirical approach, comparative study depending on the style of contest, casual relationship between personal character and image of corporate hosting contest and so on.

• The monthly packaging world
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• s.249
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• pp.108-118
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• 2014

환경부가 주최하고 (사)한국환경포장진흥원이 주관하는 제3회 그린패키징 공모전 시상식이 12월 9일 엘타워 엘하우스홀에서 열렸다. 그린패키징 공모전은 우수한 친환경 포장기술 및 디자인을 발굴, 시상함으로써 친환경 포장에 대한 인식 및 관심을 제고하여 관련 학생 및 종사자들의 사기진작과 기술개발 의욕을 고취시킨다는 목적 아래 금번 제3회를 맞고 있다. 특히 친환경 포장과 관련한 신기술 개발을 촉진함으로써 자원 절약과 녹색 성장에 기여한다는 취지를 갖고 있다. 제3회 그린패키징 공모전에서는 일반 부문 10개 업체 16점이 수상의 영예를 안았으며, 학생부문에서도 5개교 12점이 수상했다. 본 고에서는 제3회 그린패키징 공모전 수상작들을 살펴보도록 한다.

• Review of KIISC
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• v.16 no.1
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• pp.49-58
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• 2006

디지털 핑거프린팅(Digital Fingerprinting) 기술은 온라인상에서 멀티미디어 콘텐츠의 저작권을 보호하기 위한 기술의 하나로 워터마킹(Watermarking) 기술과 같이 콘텐츠에 저작권을 증명하기 위한 부가정보를 비인지적으로 삽입하고 추출하는 기술이다. 핑거프린팅 기술에서는 주로 구매자의 정보를 삽입하기 때문에 콘텐츠를 처음 유포한 구매자를 역추적 할 수 있는 기능(trace traitor)을 제공한다. 본 고에서는 핑거프린팅 된 콘텐츠에서 악의적인 사용자가 핑거프린트를 제거하기 위하여 같은 콘텐츠를 구매한 다른 구매자와 공모하는 기술과, 이런 공모 후에도 핑거프린트를 추출할 수 있도록 삽입 코드를 공모 허용하도록 설계하는 공모보안코드에 대해 고찰한다.

• The Korean Journal of Financial Management
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• v.15 no.1
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• pp.207-222
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• 1998

본 논문은 1977-91년 사이 런던증권시장에서 일반공모형태로 주식이 매각된 영국의 41개 민영화기업의 최초공모주 가격결정에 대해 실증분석하고 있다. 특히 단기적으로 볼 때 영국 민영화기업의 최초공모주는 일반기업의 최초공모주에 비해 현저히 낮게 평가되어 발행되고 있음이 밝혀졌다. 본 논문에서는 민영화기업의 이러한 저가발행 현상을 정보비소유 투자자에게 최소한의 수익률을 보장해 주어야 한다는 Rock(1986)의 winner's curse 관점에서 설명하여 보았다. 먼저 정보비소유 투자자가 직면할 수 있는 winner's curse의 존재 가능성을 청약경쟁률과 저평가율과의 관계를 고찰함으로써 확인하였다. 즉 청약경쟁률과 초과수익률(할인규모)은 정(正)의 관계를 보였는데 이는 정보소유 투자자가 할인규모가 큰 민영화기업의 최초공모주에 집중적으로 청약하여 정보 비소유 투자자를 구축(驅逐)하여 정보비소유 투자자를 winner's curse에 직면하게 할 가능성이 있다는 Rock의 주장과 일치하는 것으로 보인다. 또한 배정확률을 고려한 가중평균초과수익률이 무위험수익률을 보장해주는지를 조사함으로써 Rock의 주장을 실증적으로 규명하였다. 한편 영국 민영화기업의 최초공모주는 장기적으로도 정(正)의 초과수익률을 시현하고 있는 데 이는 일반기업의 최초공모주의 누적초과수익률은 장기적으로는 부(負)를 시현한다는 Ritter(1991)와 Levis(1993)의 연구결과와는 대조적이다.

• The Journal of the Korea Contents Association
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• v.17 no.12
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• pp.590-599
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• 2017

This research conducted a positive research to raise the effect of contest exhibitions as PR mechanism, considering the present condition increase in number of consumer participating in contest exhibitions and increase in organizations hosting such exhibitions. This research investigated whether there are differences in corporate image and behavior intention before and after the exhibition. Furthermore, it verified whether there are differences in behavior intention depending on level of satisfaction after exhibition. For the research, 139 university students from 7 universities nationwide who participated in exhibition hosted by public organizations were selected for analysis. The result shows that there are changes in corporate image and behavior intention before and after exhibitions. The corporate image depending on satisfaction level after exhibition shows that there are significant changes in professional image and trust image, but not in social contribution image. Based on the research result, we verified the value and effect of contest exhibitions.

• Convergence Security Journal
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• v.7 no.1
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• pp.29-34
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• 2007

Recently, the distribution and using of the digital multimedia contents are easy by developing the internet application program and related technology. However, the digital signal is easily duplicated and the duplicates have the same quality compare with original digital signal. To solve this problem, there is the multimedia fingerprint which is studied for the protection of copyright. Fingerprinting scheme is a technique which supports copyright protection to track redistributers of electronic information using cryptographic techniques. Only regular user can know the inserted fingerprint data in fingerprinting schemes differ from a symmetric/asymmetric scheme and the scheme guarantee an anonymous before re-contributed data. In this paper, we present a new scheme which is the detection of colluded multimedia fingerprint by neural network. This proposed scheme is consists of the anti-collusion code generation and the neural network for the error correction.

• The KIPS Transactions:PartB
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• v.12B no.4 s.100
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• pp.443-450
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• 2005

Digital fingerprinting is a contents-protection technique, where customer information is inserted into digital contents. Fingerprinted contents undergo various attacks. Especially, attackers can remove easily the inserted fingerprint by collusion attacks, because digital fingerprinting inserts slightly different codes according to the customers. Among collusion attacks, averaging attack is a simple, fast, and efficient attack. In this paper, we propose a video fingerprinting system that is robust to the averaging attack. In order to achieve code efficiency and robustness against the averaging attack, we adopt anti-collusion code (fingerprint code) from GD-PBIBD theory. When the number of users is increased, the size of fingerprint code also grows. Thus, this paper addresses a zero-based code modulation technique to embed and detect this fingerprint code efficiently. We implemented a blind video fingerprinting system based on our proposed technique and performed experiments on various colluding cases. Based on the results, we could detect most of colluders. In the worst case, our scheme could trace at least one colluder successfully.

• Journal of Korean Society of Archives and Records Management
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• v.21 no.3
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• pp.37-60
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• 2021

The recent revision of the Public Records Management Act provided a basis for the procurement of private records from local archives. Accordingly, some local governments are promptly trying to gather these private records through various ways, and a representative methodology of such is a contest for acquiring records. This study aims to analyze how much this contest contributes to the acquisition of private records and the current status of its operation. As an example of this study, Jeonju Citizens Archives, which conducted the contest more than ten times, was selected. Based on the analysis results, the operation status of the contest for acquiring records and improvement plans for activation were presented.

• Management & Information Systems Review
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• v.28 no.1
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• pp.25-44
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• 2009

This study examines long term performance of initial public offerings(IPO) after book building was introduced in KOSDAQ market. We use event time portfolio approach and calendar time portfolio approach to test if the performance of IPO is fair or not in long term. We estimate the performance by using the BHAR(buy and hold abnormal return), CAR(cumulative abnormal return), WR(wealth relatives) model in event time portfolio approach. And we calculate the performance by using Fama-French three factor model, CTAR(calendar time abnormal return), RATS(Return Across Time and Securities approach) model in calendar time portfolio approach. This study shows that the long term performance of IPO is positive with statistical significance as the results of the analysis through the various research method and all windows in all kinds of firms and total firms.

• Review of KIISC
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• v.30 no.6
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• pp.117-123
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• 2020

NIST에서는 앞으로 다가올 사물인터넷 환경과 양자 컴퓨터 시대를 대비하기 위해 2019년부터 경량암호 표준화 공모전을 그리고 2017년부터 양자내성암호 표준화 공모전을 각각 진행해 오고 있다. 경량암호 표준화 공모전은 경량 블록암호 운영 모드를 통해 저전력 사물인터넷 환경 상에서 높은 가용성을 만족하는 암호 개발을 그리고 양자내성암호 표준화 공모전은 양자컴퓨터 상에서의 양자알고리즘으로부터 안전한 공개키 암호 개발을 각각 목표로 하고 있다. 본 고에서는 차세대 암호의 표준화에 큰 영향을 미치게 될 NIST 경량암호 그리고 양자내성암호 표준화 공모전 동향을 상세히 확인해 보도록 한다.