• Journal of Satellite, Information and Communications
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• v.6 no.2
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• pp.107-111
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• 2011

In World War II, the solar eruption (solar flare) was revealed to make a significant effect to radar systems. The radio disturbance in February 28, 1942 was due to increased cosmic ray during solar maximum. Since such phenomena had been disclosed, many studies were accomplished on solar flare and solar particle event. Now various researches about the effects of solar flare on the spacecrafts, the airplanes flying across the pole, the radar systems, and wireless communication systems are studied. In this paper we analyzed the relationship between the harmful effect on the wireless communication by the solar eruption and the period of solar activity from the sunspot number data and the solar radio burst data for last 40 years.

• Korean Journal of Biological Psychiatry
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• v.2 no.2
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• pp.252-256
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• 1995

Corticotropin-releasing factor(CRF)를 분비하는 배양세포주는 CRF의 세포내 조절을 연구하는데 있어 훌륭한 체계가 된다. BE(2)-M17 및 BE(2)-C 세포주는 CRF를 생산하고 분비하며 forskolin 처치에 반응하는 것으로 알려져 있다. 저자들은 이들 세포주에 phorbol 에스테르, 즉 phorbol 12-myristate 13-acetate(TPA) 0.8, 4, 10, 20 nM, 및 nitric oxide(NO)의 신호전달 경로의 자극제(1-${\mu}M$ nitroprusside)와 차단제($1{\mu}M$ nitroprusside+$300{\mu}M$ $N^G$-methyl-D-arginine), 그리고 interleukin-$1{\alpha}$ (IL $1{\alpha}$ ; 4, 20, 100, 500 pM)를 처치하여 CRF를 의미있게 증가시켰으나 세포외 분비는 C 세포에서만 변화되었다. NOS계의 자극제와 차단제는 C 세포의 forskolin 효과를 의미있게 변화시켰다. IL$1{\alpha}$는 두 세포주에 대한 영향이 없었다. 상기 제제들에 대한 이들 세포의 반응이 중추신경계 CRF 신경들과 관련하여 논의되었다.

• The Journal of the Convergence on Culture Technology
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• v.10 no.3
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• pp.713-722
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• 2024

This study highlights the impact of Artificial Intelligence (AI) technology on journalism, discussing its utility and addressing major ethical concerns. Broadcasting companies and media institutions, such as the Bloomberg, Guardian, WSJ, WP, NYT, globally are utilizing AI for innovation in news production, data analysis, and content generation. Accordingly, the ecosystem of AI journalism will be analyzed in terms of scale, economic feasibility, diversity, and value enhancement of major media AI service types. Through the previous literature review, this study identifies key ethical and social issues in AI journalism as well. It aims to bridge societal and technological concerns by exploring mutual development directions for AI technology and the media industry. Additionally, it advocates for the necessity of integrated guidelines and advanced AI literacy through social consensus in addressing these issues.

• The Korean Journal of Applied Statistics
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• v.29 no.7
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• pp.1411-1419
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• 2016

Nonparametric procedures in randomized block design was proposed by Friedman (1937) as a general alternative. This method is used to find out the difference in treatment effect. It can cause a loss of inter block information using the ranking in each block. This paper proposed nonparametric procedures using an aligned method proposed by Hodges and Lehmann (1962) to reduce block information based on joint placement suggest by Jo and Kim (2013) in a randomized block design. We also compared the power of the test of the proposed procedures and established method through a Monte Carlo simulation.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.1157-1159
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• 2017

이 논문은 보안성과 성능이 향상된 새로운 스마트 도어록 시스템을 제안한다. 기존의 1세대 도어록은 보안성이 취약하다는 단점을 지닌다. 이를 해결하기 위해 NFC 기반 시스템이 제안되었으나 취약한 보안 문제를 완벽히 해결하지 못한다. 이 논문에서는 아두이노, 라즈베리 파이 및 다양한 센서를 이용한 스마트 도어록 시스템을 제안한다. 제안 시스템 구현을 위해 초음파센서, 라즈베리 파이 카메라, 부저, 서보모터를 이용한다. 또한 3D프린팅을 이용하여 제작한 프로토타입을 보인다.

• Journal of Korean Society for Atmospheric Environment
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• v.20 no.2
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• pp.143-151
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• 2004

The chemical composition of PM$_{2.5}$ was measured at Gosan, Jeju for two weeks each in November 2001 and spring 2002. In the latter part of the measurement period of November 2001, designated as the polluted period in this work, secondarily formed ion components as well as primarily emitted elemental carbon were high. PM$_{2.5}$ mass concentration was also high in this polluted period compared with the yellow sand period, in which daily average of PM $_{10}$ peaked up to 520 $\mu\textrm{g}$/㎥. Increase of major components of anthropogenic origin in the polluted period was not correlated with the variation in sea salt components while increase of crustal components in the yellow sand period was highly correlated with the variation in sea salt components. Trace elements were generally higher in the yellow sand period; however, toxic heavy metals such as zinc, cadmium and lead were the highest in the polluted period.d.d.d.

• Korean Institute of Interior Design Journal
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• v.21 no.2
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• pp.133-140
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• 2012

Our government finally understood the true meaning of this wisdom and is attempting to revive the rural area by establishing local produce exhibition hall. This is to allow different regions to promote their specialties and provide diverse experience to the public. However, the reality is that unstructured marketing and PR is not achieving much. Marketing in the past was a paradigm of function and benefit. As we passed 20th century, this was challenged, leading to experiential marketing. Customers' cultural urge and interest in experience and participation are getting stronger. With the facilitation of Promotion Center for local special products, local special products and relevant local communities will be promoted, and the distribution business will grow further. This research was performed to establish basic research materials for planning information center in order to invigorate regional products. This study brought about the following results: first, the Promotion Center for local special products can acquire emotional elements by associating the elements with local special products; secondly, the Promotion Center for local special products can acquire cognitive elements by harmonizing local communities' unique identities with their own other special products; thirdly, the Promotion Center for local special products can acquire behavioral elements by enjoying various experiences and events; fourthly, the Promotion Center for local special products can acquire relational elements by integrating other new spaces.

• LOGISTICS
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• s.16
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• pp.25-27
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• 2006

국내의 주요 물류기업들 중 16개 기업이 '종합물류기업'이라는 인증을 받기위해 건설교통부로부터 심사를 받고 있다. 올 상반기중에 우리나라를 대표하는 종합물류기업이 탄생할 것으로 기대된다. 이들 기업을 비롯하여, 물류기업들이 국내시장 규모만을 바라보고 경쟁하기 보다는 보다 넓은 해외진출을 꾀하여 글로벌 물류기업으로 다시 태어나야 할 것이다. '물류'라는 단어가 우리나라에 들어온지 불과 30년도 채 안되는 시점에서 동북아 물류중심을 외치는 우리의 물류산업은 비약적인 발전을 이뤘으며, 국내 시장이 아닌 중국을 비로한 해외 각국으로 진출하는 국제물류에 대한 관심이 높아지고 있다. 최근 21세기에는 북한, 아시아, 중국의 항만, 도로, 철도 등 하부구조를 크게 성장시켜, 권역 운송을 광역화하고 복합운송을 발전시켜야 한다는 의견과 더불어 물류시장의 개방을 통한 외국 운송업체들의 참여를 유도하여 국내 업체의 경쟁력을 키워야 한다는 업계의 의견이 조심스럽게 흘러나오고 있다. "만약 물류시장이 개방될 경우 우리나라 물류기업은 생존 대응능력은 있는가!"하는 의문은 종합물류기업들을 보면 답이 나올 것이다. 해외시장 개척을 적극적으로 펼치면서 외국 물류기업과 어깨를 나란히 하고자 하는 국내의 우수 물류기업들이 많다. 그 중 몇몇 기업들을 살펴보면 대한통운, 글로비스, 한솔CSN, 현대택배, 한진, 현대상선 등은 해외현지법인화를 통하여 글로벌 물류기업으로 도약을 꾀하고 있는 기업도 많다. 이번호에는 "국내외 물류기업의 해외진출 방향, 전략 및 사례"를 통하여 글로벌 물류기업으로 성장하고 있는 업체들의 해외진출현황을 간략히 살펴보고, 전략에 대해 물류전문가로부터 의견을 들어본다.

• The Journal of the Korea Contents Association
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• v.11 no.3
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• pp.36-47
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• 2011

The main issue in the current software development is the development of a reusable and flexible software. Already many successful software development experiences have been proposed to extract patterns of common look, depending on the software environment or depending on the nature of the module you want to implement. Can develop the software quickly and accurately to select fit for the purpose of developing and reuse using experienced patterns. These developments are depending on the success and failure become a new experience and reuse again. Apply design pattern in software development is required, was not an option. In this paper, design and implement to a common framework applied design patterns for the development of reusable software using .NET Remoting in one of the technologies of distributed communication services.

• Journal of Korean Society for Atmospheric Environment
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• v.18 no.6
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• pp.515-525
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• 2002

A field study was conducted to estimate the emission rate of biogenic volatile organic compounds (BVOCs) from pine trees. In addition, the influences of meteological variables on their distribution characteristics have been investigated. A vegetation enclosure chamber was designed and constructed of Tedlar bag and acril. Sorbent tubes made up of Tenax TA and Carbotrap were used to collect biogenic VOCs emitted from each individual tree. Analysis of BVOCs was performed using a GC-FID system. The fundamental analytical parameters including linearity, retention time, recovery efficiency, and breakthrough volume were examined and verified for the determination of monoterpene emission rates. Total average concentration of each component is found to be $\alpha$-pinene (16.5), $\beta$-pinene (4.61) from pine trees, and $\alpha$-pinene (42.4), $\beta$-pinene (18.7 ng(gdw)$^{-1}$ hr$^{-1}$ ) from Korean pine trees. On the basis of our study, $\alpha$-pinene was found to be the major monoterpene emitted from both pine and Korean pine trees which were accompanied by $\beta$-pinene, camphene, and limonene. In ambient air, variable monoterpene compositions of emissions from pine trees were similar to Korean pine trees. Emission rates of monoterpene from each tree were found to depend on such parameters as temperature and solar radiation.