• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.7
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• pp.2454-2467
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• 2015

Increasing traffic and bandwidth requirements bring challenges to the next generation wireless networks (5G). As one of the main technology in 5G networks, Ultra-Dense Network (UDN) can be used to improve network coverage. In this paper, a radio over fiber based model is proposed to solve the load balancing problem in ultra-dense network. Stochastic differential game is introduced for the load balancing algorithm, and optimal load allocated to each access point (RAP) are formulated as Nash Equilibrium. It is proved that the optimal load can be achieved and the stochastic differential game based scheme is applicable and acceptable. Numerical results are given to prove the effectiveness of the optimal algorithm.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.18 no.3
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• pp.42-54
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• 2010

The purpose of this study is to analyze the aircraft icing index of Korean peninsula using the numerical weather prediction model, KWRF and pilot weather report data. As comparing the pilot weather report data with the calculated icing index using the KWRF model result, SCLW, RAP, and AFGWC index are more useful than any other index, and IC2, NAWAU, and RSID index are different case by case. But IC1, SID1 and SID2 index show that these overestimated severe icing in every vertical level. Through this icing study, it is expected that this study will help to develop the proper icing index of Korean peninsula.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2014.11a
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• pp.36-38
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• 2014

디지털 케이블 방송 시스템은 기존의 아날로그 케이블방송과 달리 하나의 6MHz 주파수 대역에 여러 방송채널들을 전송하고 있다. 즉, MPEG2 또는 H.264/AVC 등 비디오 압축 방식으로 인코딩된 여러 방송채널들과 각 채널의 대한 정보를 제공하기 위한 PSI 정보를 생성하여 멀티플렉싱하여 6MHz 주파수 대역으로 전송하는 방식으로 서비스를 제공한다. 하지만, 근본적으로 디지털 케이블 방송에서는 방송채널 변경 시 QAM Tuner의 주파수 Locking 및 디멀티플레싱, PSI 정보 파싱을 통한 채널 정보 획득, 비디오 및 오디오 디코딩을 위한 RAP(Random Access Point) 획득, 스크램블채널을 위한 ECM 획득 등의 시간 지연이 발생함에 따라 아날로그 케이블방송과 비교하여 상당한 채널 변경 지연이 발생한다. 이러한 이유로 디지털 케이블 방송 서비스의 품질 향상을 위해서는 채널 변경 시간 지연을 최소화하기 위한 연구가 필요하다. 따라서, 본 논문에서는 채널 변경 지연 요소들을 분석하고, 채널 변경 지연을 최소화하기 위한 기법을 제안한다.

• Journal of Korea Multimedia Society
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• v.6 no.4
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• pp.746-752
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• 2003

In this paper, we proposed an image retrieval system with a simple and effective relevance feedback, called RAP(Reward and Punishment) algorithm. First, color and texture features were extracted from the images. Next, the extracted feature values were used for image retrieval in various forms. We applied the relevance feedback to the initial retrieved images from the image retrieval system, and compared its result with that of the conventional system. In the experiment using the test image database of 16 class 512 images, the proposed system showed the better retrieval performance of about 10∼l7 % than that of the conventional INRIA system in each relevance feedback step.

• Journal of the Korean Society of Costume
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• v.29
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• pp.183-196
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• 1996

Study on the Apparel Advertising Strategy and Popular Music Singer. From the 1990s popular musics begin to reflect modern fashion. Especially those dance musics such as Rap or Reggae captivate teenagers through the mass media. So middle-low price causal cloth-ing companies hire the most popular singers as their role model. this marketing strategy succeeds to increas their sales and now many companies compete to engage famous singers,. in western countries where the music and the fashion have interacted for some times famouse singers express their personalities through the clothes they wear. The consumers try to imitate them by puchasing smiliar clothsing. And it makes the apparel company to produce more goods. However if those companies continue to be shiortsighted in terms of increasing sales in the shortrun with out their personality and differentiation brand concept. they will only instigate the teenager's consumptionand they'll fail to create their own fashion-style.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.8
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• pp.3085-3090
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• 2015

The telomeric end structures of the DNA are known to contain tandem repeats of TTAGGG sequence bound with specialised protein complex called the "shelterin complex". It comprises six proteins, namely TRF1, TRF2, TIN2, POT1, TPP1 and RAP1. All of these assemble together to form a complex with double strand and single strand DNA repeats at the telomere. Such an association contributes to telomere stability and its protection from undesirable DNA damage control-specific responses. However, any alteration in the structure and function of any of these proteins may lead to undesirable DNA damage responses and thus cellular senescence and death. In our review, we throw light on how mutations in the proteins belonging to the shelterin complex may lead to various malfunctions and ultimately have a role in tumorigenesis and cancer progression.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.53-54
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• 2017

랩 음악은 장르 특성상 곡에서 가사의 중요성이 매우 크고, 가사 전달을 리듬 중심으로 하기 때문에 가사의 리듬, 운율이 부각된다. 랩 음악 가사의 내용과 운율에 대해 살펴보기 위해 지난 10년간 랩 음악 장르에서 전 세계적으로 가장 큰 인기를 얻고 있는 작사가 겸 가수Drake 와 Lil Wayne 의 곡 23곡을 선정하여 그 내용과 가사 운율을 살펴본다. 내용은 공통적으로 과시를 가장 많이 사용하였으며, 사랑, 유흥 등의 가사에서는 두 작사가의 차이를 보였다. 운율은 두 작사가 모두 규칙적 운율을 주로 사용하였으며, 그 안에 여러 가지 방법을 통해 불규칙성을 더했고, 그 방법을 사용하는 빈도가 다름으로서 운율 사용방식의 차이점을 보였다.

• YAKHAK HOEJI
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• v.39 no.6
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• pp.676-680
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• 1995

The nucleotide sequence of Xbal-Mbol fragment of pKH7, a chloramphenicol-resistant($Cm^{r}$) plasmid isolated from multidrug-resistant S. aureus SA2, has been determined. Xbal-Mbol fragment of pKH7 was found to contain two ORFs. One ORF encoded Rap and the other encoded CAT protein. The deduced amino acid sequences of Rep and CAT of pKH7 were compared to those of pUB112 and pC221. Comparisons revealed that there was one amino acid difference in CAT between pKH7 and pUB112. CAT of pKH7 exhibited 98.6% amino acid identity to that of pC221. In case of Rep proteins, a slightly lower homology of 96.4% and 86.7% in amino acid sequences was observed between pKH7 and pUB112 and between pKH7 and pC221, respectively.

• CELLMED
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• v.9 no.1
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• pp.4.1-4.2
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• 2019

The aims of this article is to argue that the effect of catharsis through satire and humor in Korean music, Saseolnanongga. This song is a cheerful song of four beats and the representative rap music of Korean traditional music. This song is a folk song that reveals satire and humor such as curse to the person who left me and compassion and self-absorption. The lyrics harmonize with cheerful rhythm and create laughter and the lyrics of the song itself alone cause music therapy. The contents of the lyrics of the song are already refreshing. It means that you will be able to satisfy your surrogacy through the explicit lyrics. In this way, author thinks emotional expression through singing lyrics is an alternative solution. There has been a cathartic element in many twentieth-century approaches to psychological healing. The author thinks developmental criticism leads society to health, and satirical criticism reflects and heals individuals through catharsis.

• BMB Reports
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• v.54 no.3
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• pp.149-156
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• 2021

The well-known second messenger cyclic adenosine monophosphate (cAMP) regulates the morphology and physiology of neurons and thus higher cognitive brain functions. The discovery of exchange protein activated by cAMP (Epac) as a guanine nucleotide exchange factor for Rap GTPases has shed light on protein kinase A (PKA)-independent functions of cAMP signaling in neural tissues. Studies of cAMP-Epac-mediated signaling in neurons under normal and disease conditions also revealed its diverse contributions to neurodevelopment, synaptic remodeling, and neurotransmitter release, as well as learning, memory, and emotion. In this mini-review, the various roles of Epac isoforms, including Epac1 and Epac2, highly expressed in neural tissues are summarized, and controversies or issues are highlighted that need to be resolved to uncover the critical functions of Epac in neural tissues and the potential for a new therapeutic target of mental disorders.