• 한국IT서비스학회지
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• 제12권3호
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• pp.195-205
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• 2013

Global media companies like Sony, Fox, Vivendi, and Disney expand their activities aggressively to foreign markets. This paper seeks to find out their precise strategies to succeed in the global market. Our study focus on two companies Fox and Sony who manage successively in Korean market. Particularly, these two media companies launched in Korean market several channels, joint venture companies with Korean partners and have expanded.Korean channel in East asian countries.

• 인터넷정보학회논문지
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• 제12권4호
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• pp.51-59
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• 2011

본 연구의 목적은 해외유료방송의 시장집중과 시장성과 간의 실증적인 관계분석을 통해 국내 미디어산업의 바람직한 규제 및 정책 방향을 고찰해 보는 것이다. 세계적으로 방송통신이 융합되어 규제가 완화되고 있음에도 불구하고, 국내의 경우에는 미디어 시장이 특정사업자에 집중될 경우 시장 비효율이 발생하고 다양성이 훼손된다는 전제 하에, 여전히 시장집중현상을 집중적으로 규제하고 있다. 본 연구에서는 전 세계 17개 유료방송시장을 대상으로 1위 사업자의 시장점유 정도가 시장가격과 서비스 보급에 영향을 미치는지 분석하였다. 조사결과 시장집중 현상이 초래되어도 가격이 상향되거나 서비스 보급이 지연되는 않는 것으로 분석되었다. 본 연구결과, 시장성과에 영향을 주는 요인들이 다각화되었기 때문에 단순히 시장집중만을 규제하면 기술혁신 침체와 같은 부작용도 발생하는 것을 포함하여 다양한 시사점들이 도출되었다.

• 디지털융복합연구
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• 제10권8호
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• pp.21-28
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• 2012

본 연구는 해외 IPTV 시장분석을 통해 디지털 융합서비스 확산에 영향을 미치는 산업적 요인과 기업 전략적 요인을 탐색하는 것이 목적이다. 연구를 위해 산업조직이론의 SCP 접근법에 근거하여 주요 변수를 도출했고, 해외 20개국 31개 IPTV 사업자를 대상으로 데이터를 수집했다. 데이터 분석결과 인터넷 보급률과 유료방송 지배사업자의 시장점유율은 IPTV 보급과 양의 상관관계를 보였고, 유료방송 보급률, 일인당 지불금액, 기업전략 요인은 영향을 주지 않는 것으로 밝혀졌다. 본 연구는 탐색수준이지만 해외시장 분석을 통해 디지털 서비스 확산과 시장 변수관계를 밝혔다는데 의의가 있다. 따라서 본 연구는 각 국가별로 시장특성에 맞은 디지털 융합정책 수립에 도움을 줄 것으로 기대된다.

• 한국가축번식학회지
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• 제27권4호
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• pp.275-280
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• 2003

This study was carried out to investigate the effect of cysteamine addition during in vitro maturation, fertilization and culture of porcine oocytes. Oocytes were matured for the first 22 h in mTCM -199 media supplemented with or without 150 $\mu$M cysteamine. They then were matured for an additional 22 h in mTCM-199 media without hormones supplemented with or without 150 $\mu$M cysteamine. When cumulus-oocyte complexes (COCs) were matured in the mTCM-199 media supplemented with cysteamine, the rates of GVBD and maturation (metaphase II) were enhanced as compared to the media without the addition of cysteamine. Also, when COCs were matured in the mTCM-199 media supplemented with cysteamine, the rates of sperm penetration, male pronucleus formation, cleavage and blastocyst formation after in vitro fertilization were enhanced as compared to the media without the addition of cysteamine. In conclusion, it was suggested that oocytes matured for the first 22 h in mTCM-199 media supplemented with 150 $\mu$M cysteamine increased the rates of metaphase II, sperm penetration, male pronucleus and blastocyst formation were higher as compared to the media without addition of cysteamine.

• Journal of Pharmaceutical Investigation
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• 제36권6호
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• pp.385-392
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• 2006

Paclitaxel is an important chemotherapeutic agent for the treatment of human solid tumors. Multicellular resistance(MCR) is considered to be a major mechanism of resistance of human solid tumors to chemotherapeutic agent such as paclitaxel, which includes barriers to drug penetration through tumor tissues. Multicellular layers(MCL) cultures resemble in vivo tumor condition in terms of MCR and has been used successfully to produce clinically relevant data. In the present study, we evaluated the penetration characteristics and post-penetration anti-proliferative activity of paclitaxel using MCL of human colorectal cancer cells(DLD-1 and HT-29) grown in Transwell inserts. The penetration of $[^{14}C]-paclitaxel$ was slower than that of mannitol which penetrates via paracellular pathway in DLD-1 MCL. The penetration of $[^{14}C]-paclitaxel$ was faster in HT-29 MCL compared to DLD-1 MCL, i.e., at 10 ${\mu}M$ 100% and 40% penetration were observed after 48 hr incubation for HT-29 and DLD-1 cells, respectively. When calculated using anti-proliferative activity in the conditioned media of bottom chamber, the penetration after 24 hr was very limited(less than 50%) and concentration-dependent at the concentrations tested in both MCL's. These results suggest that limited and differential penetration of paclitaxel in tumor tissues may contribute to lower and differential efficacy against human solid tumors.

• International Journal of Costume and Fashion
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• 제17권1호
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• pp.73-87
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• 2017

Monpe, Korean women's wartime attire during the Japanese colonization period, has survived for 70 years as typical baggy workpants for rural women and emerged as retro-fashion. This paper applied a theory of "meme" to explain the monpe fashion trend in Korea. Based on literature review, empirical analyses were conducted by analyzing market and media including newspaper articles and blogs. We found that the monpe meme has evolved over time through variation, penetration, and diffusion. In terms of variation, the impression of monpe transitioned from a negative image to a positive one as a result of changes in design, functionality, and popular image. In terms of penetration, the monpe meme has spread into popular culture, again through mass media, with images of active, sexy, and attractive monpe-wearers on television and at popular occasions. Finally, the monpe meme has diffused throughout a broad range of consumers of various ages and both genders as an item of clothing for various occasions through diversified distribution channels. In this way, the development of monpe as fashionable clothing in Korea during the 2000s is itself a meme reflecting its evolution from a disgraceful colonial legacy to an item of contemporary fashion.

• 한국산업보건학회지
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• 제21권1호
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• pp.62-71
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• 2011

There is widespread concern that particulate filtering respirators (PFRs) available in Korea will be efficient for nanoparticles. The purpose of this review study was to analyse research literature and recommend PFRs suitable for protection against nanoparticles. In all studies, respirators containing electret filter media (N95, P100 and FFP2, FFP3) consistently have their MPPS below 100 nm and particle penetration levels at the MPPS can vary widely, but they comply with NIOSH or EN certification criterion. Electret filtering facepieces respirators (FFRs) were found to shift in the Most-Penetrating Particle Size(MPPS) from 30-60 to 200-300 nm range after the electric charges were removed, and FFRs were above their minimum penetrations of criterion. Korean special class and first class FFRs (the same as FFP3 and FFP2, respectively) would be effcient for nanoparticles unless FFRs are removed electric charges. It is difficult to evaluate if mechanical PFRs is efficient for nanoparticles due to the lack of related materials.

• 설비공학논문집
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• 제10권5호
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• pp.600-609
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• 1998

The experimental investigation of thermal response characteristics by the air flow through the porous media has been carried out. The packed spheres of steel or glass were considered as the porous media in the present study. Temperature distributions of the fluid in the porous media as well as pressure drops through the porous media were measured. The transient temperature variations in the porous media are compared favorably with the analytical results in the high Reynolds number ranges. However, in the low Reynolds number ranges, the experimental data deviate from the analytical results, due to the dominant heat conduction penetration to the upstream direction, which is not considered in the analytical model. The cool-down response of porous media is found to be dependent upon the specific dimensionless time considering the material property and air velocity. The heat discharge process is recommended to be operated until a certain time, considering the cost efficiency.

• 한국통신학회논문지
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• 제35권8B호
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• pp.1150-1158
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• 2010

At present multimedia service composed of voice, data, and video service is prevalent in the Internet. As such, wide-scale penetration of Internet service imposes tremendous pressure to the network infrastructure such as the media servers and links as well as the nodes. In addition, users from a large-scale population require broad bandwidth and high level of QoS. This requires a network with reliable and scalable services to customers, which also necessitates a realistic method for the design of the a media server. In this work, we explore the influence of user's behavior about delay on the performance of media server that takes into account the system and user attributes in a realistic manner. By incorporating user's behavior about the delay-sensitivity, we present an analytic framework for the evaluation of the performance of the media server, via which we illustrate a meaningful intuition in the provision of Internet multimedia service.

• Journal of Information Science Theory and Practice
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• 제9권2호
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• pp.18-32
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• 2021

Social media has become a popular source of information around the world. Previous studies explored different trends of social media news consumption. However, no studies have focused on Bangladesh to date, where social media penetration is very high in recent years. To fill this gap, this research aimed to understand its popularity trends during the period. For that reason, this work analyzes 97.67 million page likes and 3.48 billion interaction data collected from nine Bangladeshi news media's Facebook pages between December 2016 to November 2020. The analysis shows that the growth rates of page likes and interaction rates declined during this period. It suggests that the media's Facebook pages are gradually losing their popularity among Facebook users, which may have two more interpretations: Facebook's aggregate appeal as a news source is decreasing to users, or Bangladeshi media's appeal is eroding to Facebook users. These findings challenge the previous results, i.e., Facebook's demand as a news source is increasing with time. We offer four explanations of the decreased popularity of Facebook's news: information overload, exposure to incidental news, users' selective exposure and different aims of using Facebook, and conflict between media agendas and users' interests. Some theoretical and practical significance of the results has been discussed as well.