• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1191-1194
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• 2008

최근 몇 년간 보여준 인터넷의 발전은 초기 공공재적인 성격을 강하게 지니고 시작된 초고속 인터넷망의 한계상황에 대한 우려를 가져오고 있으며 이에 따라 "망중립성"에 대한 논의가 진지하게 전개되고 있다. "망중립성" 논쟁은 망사업자(ISP)와 인터넷사업자(CP), 일반 사용자의 공공재에 대한 정의에서 지속발전 가능한 인터넷의 구조에 대한 문제로 전개되고 있다. 본고에서는 "망중립성"에 관한 다양한 시각을 정리해보고 인터넷이 가지는 고도의 보편적서비스로써 공공재적인 성격과 인터넷의 지속적인 발전을 위해 "망중립성" 논의가 어떻게 진행되어야 할 것인지 살펴보고자 한다.

• Korean journal of communication and information
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• v.70
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• pp.9-34
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• 2015

While dramatic shifts in the media environment underscore the emerging importance of structural approaches in media studies. political economists in Korea have failed to meet such demands. It is particularly noteworthy that their most serious weakness lies in economic theories. This paper aims to examine major problems in political economic approaches in Korea and suggest some research agenda and directions for the future. Above all, political economists need to scrutinize and elaborate both microscopic and macroscopic frameworks. On the microscopic level, they may learn tremendous implications from the "audience-commodity" thesis and recent debates on "information goods" among Korean economists. For the more macroscopic part, it is urgently needed to delve into mid-level issues that may illuminate specific ways the media capital operates: trends in the accumulation of capital, the influence of technological innovation, changes in the labor process, and the relations among production, circulation and consumption sectors.

• Journal of Information Management
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• v.36 no.1
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• pp.1-32
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• 2005

The scholarly communication crisis is not a journals crisis, but rather a broader crisis in information communications. It is the loss of access to the scholarly research literature, as the rising cost of STM journal subscriptions far out-strip academic library budgets. Now, the open access as alternatives to traditional journal subscription model are emerging for STM scholarly information. There are basically three forms for OA strategies : Open Access Journals(OAJ), Author Self Archiving(ASA), Academic Institutional Repositories(AIR). This paper describes the current trends and analyses potentially serious limitations and obstacles or various issues of the OA strategies, including the notion of scholarly information as a public good, myths of free access, author pay model, holder of copyright, etc.

• Korean journal of communication and information
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• v.27
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• pp.213-245
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• 2004

As we know, broadcasting implies a unilateral transmission by one sender to several recipients of information generally produced by third parties. Contrary to that, telecommunications implies an exchange between participants. Participants exchange information they produce during an interaction. However, in the age of convergence between telecommunication and broadcasting, it becomes difficult to determine exactly the boundary between services classified under telecommunications and those classified under broadcasting services. This means that new regulatory regime should be introduced to meet the convergence between telecommunication and broadcasting. In this article, we try to overcome the existing framework for understanding and regulating convergent services. In order to develop more powerful and useful framework for dealing with new convergent services, we focus on the original characteristic of "cast services," which could give us very significant basis for further discussion. "Cast services," such as traditional broadcasting services, have the characteristics of both public goods (non-exclusivity and non-rivalry in consumption) and non-interactivity. Depending on the existence of these three characteristics, we are able to apply different regulatory regime to those convergent services.

• Korean journal of communication and information
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• v.48
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• pp.46-62
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• 2009

The current study attempted to review the standards of retransmisison consent and arbitration for the terrestrial broadcasting signal. The standards are based upon the principles encouraged by the MIAC(Ministry of Internal Affairs and Communications). It has been criticized that the standards of judgement for the retransimission consent and arbitration are ambiguous and arbitrary in Japan. In 2009, MIAC announced five decisions regarding the retransmission of over-the-air. The result of the current study found that the regulations of compulsory over-the-air signal retransmission have been sustained until now. The retransmission policy of the Japan government based upon three principles; localism, proper cause and copyright act. The judgment is dependent on the intrepretation of MIAC's standard about these three principles.

• Korean journal of communication and information
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• v.43
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• pp.282-313
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• 2008

Advertising is both applauded and criticized for its characteristics and roles on society. Advertising environment is changing and developing. The important changes in advertising are fragmentation of traditional media, growth of new media, and increasing clutter. The major issue in advertising and broadcasting system in Korea is reintroduction of in-program advertising on terrestrial television stations. The purpose of this study is investigate the responses of viewers to in-program advertising. This study considers program genre as mediating variable which may affect the viewers' responses to in-program advertising. Independent variables of this study are the insertion of in-program advertising (insertion/non-insertion) and program genres(news/educational/drama/entertainment program). Dependent variables of this study are viewers' responses, attitude towards broadcasting station and attitude towards advertiser. This study was run as a $2{\times}4$ factorial design with 30 subjects per cell, resulting in a total sample size of 240. This study randomly assigned each subject to 1 of the 8 treatment groups. The result of this study shows that in-program advertising induces negative responses of viewers, attitude towards broadcasting station and advertiser. And this study found that viewers showed the negative responses to in-program advertising regardless of program genre. The findings of this study illustrate the need of consideration and planning of in-program advertising to protect viewers' right.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.9
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• pp.4214-4223
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• 2012

The argument related to the use of real and anonymous names on the Internet bulletin board has recently become a main issue. When using real names, it is possible to violate free discussion and privacy. Also, when using anonymous names, it is possible to have the reverse function of the Internet in regard to the use of malicious replies or the distribution of false ideas. Therefore, this paper has made it possible to prevent the spread of the user's personal information and execute the single log-in process by using the XML-token method which is one of the SSO technologies. Also, by issuing virtual IDs and forming the path when establishing tokens, the anonymous bulletin board which provides anonymity with a conditional tracing process has been suggested. After analyzing the performance of visitor numbers at authentication time, the anonymous bulletin board based on the group signature method showed the average response rate of 0.72 seconds, 0.18 seconds, which was suggested scheme. In the authentication time 4-5 times faster response speed, respectively. Also, since the suggested system does not have to provide a single authentication process or make the user provide his or her signature, the level of user's convenience seems to be much higher. Such a result shows that the system suggested on the anonymous bulletin board has a more appropriate level of user's convenience.

• The Korean Journal of Nuclear Medicine Technology
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• v.12 no.3
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• pp.235-240
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• 2008

Purpose: At the beginning of PET/CT, Computed Tomography was mainly used only for Attenuation Correction (AC), but as the performance of the CT have been increase, it could give improved diagnostic information with Contrast Media. But it was controversial that Contrast Media could affect AC on PET/CT scan. Some submitted thesis' show that Contrast Media could overestimate when it is for AC data processing. On the contrary, the opinion that Contrast Media could be possible to affect the alteration of SUV because of the overestimated AC. But it does not have a definite effect on the diagnosis. Thus, the affection of Contrast Media on AC was investigated in this study. Materials and Methods: Patient inclusion criteria required a history of a malignancy and performance of an integrated PET/CT scan and contrast- enhanced CT scan within a 1-day period. Thirty oncologic patients who had PET/CT scan from December 2007 to June 2008 underwent staging evaluation and met these criteria. All patients fasted for at least 6 hr before the IV injection of approximately 5.6 MBq/kg (0.15 mCi/kg) of $^{18}F$-FDG and were scanned about 60 min after injection. All patients had a whole body PET/CT performed without IV contrast media followed by a contrast-enhanced CT on the Discovery STe PET/CT scanner. CT data were used for AC and PET images came out after AC. The ROIs drew and measured SUV. A paired t-test of these results was performed to assess the significance of the difference between the SUV obtained from the two attenuation corrected PET images. Results: The mean and maximum Standardized Uptake Values (SUV) for different regions averaged over all Patients. Comparing before using Contrast Media and after using, Most of ROIs have the increased SUV when it did Contrast Enhanced CT compare to Non-Contrast enhanced CT. All regions have increased SUV and also their p value was under 0.05 except the mean SUV of the Heart region. Conclusion: In this regard, the effect on SUV measurements that occurs when a contrast-enhanced CT is used for attenuation correction could have significant clinical ramifications. But some submitted thesis insisted that the percentage change in SUV that can determine or modify clinical management of oncology patients is small. Because there was not much difference that could be discovered by interpreter. But obviously the numerical change was occurred and on the stage finding primary region, small change would be base line, such as the region of liver which has greater change than the other regions needs more attention.