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Kim, Yong-Min,Kim, Seungill,Koo, Namjin,Shin, Ah-Young,Yeom, Seon-In,Seo, Eunyoung,Park, Seong-Jin,Kang, Won-Hee,Kim, Myung-Shin,Park, Jieun,Jang, Insu,Kim, Pan-Gyu,Byeon, Iksu,Kim, Min-Seo,Choi, JinH Oxford University Press 2017 DNA research Vol.24 No.1
<P><B>Abstract</B></P><P><I>Hibiscus syriacus</I> (L.) (rose of Sharon) is one of the most widespread garden shrubs in the world. We report a draft of the <I>H. syriacus</I> genome comprised of a 1.75 Gb assembly that covers 92% of the genome with only 1.7% (33 Mb) gap sequences. Predicted gene modeling detected 87,603 genes, mostly supported by deep RNA sequencing data. To define gene family distribution among relatives of <I>H. syriacus</I>, orthologous gene sets containing 164,660 genes in 21,472 clusters were identified by OrthoMCL analysis of five plant species, including <I>H. syriacus</I>, <I>Arabidopsis thaliana, Gossypium raimondii, Theobroma cacao</I> and <I>Amborella trichopoda.</I> We inferred their evolutionary relationships based on divergence times among Malvaceae plant genes and found that gene families involved in flowering regulation and disease resistance were more highly divergent and expanded in <I>H. syriacus</I> than in its close relatives, <I>G. raimondii</I> (DD) and <I>T. cacao</I>. Clustered gene families and gene collinearity analysis revealed that two recent rounds of whole-genome duplication were followed by diploidization of the <I>H. syriacus</I> genome after speciation. Copy number variation and phylogenetic divergence indicates that WGDs and subsequent diploidization led to unequal duplication and deletion of flowering-related genes in <I>H. syriacus</I> and may affect its unique floral morphology.</P>
악성 프로세스 제어 시스템의 성능 향상을 위한 보안 프레임워크
김익수 ( Iksu Kim ),최종명 ( Jongmyung Choi ) 한국인터넷정보학회 2013 인터넷정보학회논문지 Vol.14 No.2
지금까지 인터넷 웜에 대응하기 위한 다양한 연구가 진행되어 왔다. 대부분의 인터넷 웜 탐지 및 차단 시스템은 탐지룰을 이용하여 인터넷 웜 공격에 대응하지만 새로운 인터넷 웜에 대응할 수 없는 문제가 있다. 이에 인터넷 웜의 멀티캐스트 특징을 이용한 악성프로세스 제어 시스템이 제안되었다. 하지만 이 시스템은 서비스를 제공해야 할 서버의 수가 많을수록 시스템 구축비용이 증가하고 부분적 공격 유형의 인터넷 웜 공격 탐지 확률이 낮다. 본 논문에서는 악성 프로세스 제어 시스템의 구축비용을 절감하고, 부분적 공격 유형의 인터넷 웜 공격 탐지 확률을 높일 수 있는 보안 프레임워크를 제안한다. 제안된 보안 프레임워크에서는 가상머신을 이용하여 제어서버 구축비용을 줄이며, 사용되지 않는 여분의 IP 주소를 동적으로 인터넷 웜 공격 탐지에 이용함으로써 부분적 공격유형의 인터넷 웜 공격 탐지 확률을 증가시킬 수 있다. 결국 제안된 보안 프레임워크는 비교적 낮은 비용으로 새로운 유형의 다양한 인터넷 웜에 효과적으로 대응할 수 있다. Until now, there have been various studies against Internet worms. Most of intrusion detection and prevention systems against Internet worms use detection rules, but these systems cannot respond to new Internet worms. For this reason, a malicious process control system which uses the fact that Internet worms multicast malicious packets was proposed. However, the greater the number of servers to be protected increases the cost of the malicious process control system, and the probability of detecting Internet worms attacking only some predetermined IP addresses is low. This paper presents a security framework that can reduce the cost of the malicious process control system and increase the probability of detecting Internet worms attacking only some predetermined IP addresses. In the proposed security framework, virtual machines are used to reduce the cost of control servers and unused IP addresses are used to increase the probability of detecting Internet worms attacking only some predetermined IP addresses. Therefore the proposed security framework can effectively respond to a variety of new Internet worms at lower cost.
전익수 ( Iksu Jun ),김병률 ( Byung-ryul Kim ) 한국농업정책학회 2011 농업경영정책연구 Vol.38 No.3
The purpose of this study was to examine actual conditions of Korean agricultural labor and suggest policy implications to address problems found in the examination. Korean agriculture faces labor force problems such as 1) mismatch between labor supply and demand, 2) evasion of agricultural work by labor brokering companies near to rural area 3) high dependency on foreign workers, 4) low supply of foreign workers, and 5) agricultural labor market disturbance by the Projet Hope, a public work program. However, these problems were fundamentally caused by seasonality of labor demand, shortage of new entrants of agricultural labor, and relatively low wage of the employed workers. For the basic problems specific policy suggestions were made. This study conducted telephone and mail surveys on local opinion leaders (850 people), farmers (1960 people) and labor brokering companies near to rural area (500 companies) to examine the current situation of Korean agricultural labor. Authors also conducted interviews on some agribusiness CEOs about the agricultural labor problems.