• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.27 no.4
• /
• pp.721-729
• /
• 2017

In order to take rapid action against malware, efficiency in malware analysis is essential. For instance, it would be helpful to identify and eliminate open-source function bodies or other safe portions out of the target binary codes. In this paper, we propose an tool to create open source dynamic link library files in Windows environment, extract signature information by opensource and compiler version, and compare open source function information to find suspicious function. In addition, the tool can save the information used in the comparison to the DB and use it later, reducing the analysis time overhead.

• Proceedings of the Korean Information Science Society Conference
• /
• 1998.10a
• /
• pp.436-438
• /
• 1998

신뢰성 향상은 분산 시스템의 기본 목표이며, 이를 위하여 서비스를 제공해 주는 서버 객체의 중복이 불가피 하다. 본 논문에서는 중복과 함께 고려되어야 할 기본적인 사항들을 알아보고, 현재의 시스템들을 CORBA 환경과 CORBA 에 기반하지 않은 환경으로 나누어, 각각의 시스템 환경하에서 신뢰성 있는 분산 어플리케이션의 구현을 제공하기 위해 진행되었던 연구 사례로 Orbix+Isis, Electra와 Chameleon을 소개한다. 또한 디지털 도서관에서 핸들 서비스를 제공하고 있는 핸들 서버의 장애 감내을 위한 장애 감내형 다중화 서버 모델을 제시하고, 이를 제공하기 위한 ILU의 인터페이스를 제시함으로써, 장애 감내형 디지털 도서관 서비스 구조 설계에 관한 연구를 소개한다.

• Proceedings of the Korean Information Science Society Conference
• /
• 1998.10a
• /
• pp.433-435
• /
• 1998

인터넷이 그 규모 및 정보의 내용에서의 대형화를 지향하면서 분산환경에서 사용자들의 정보에 대한 요구가 날로 증가하고 있고, 이를 만족시킬 수 있는 저 단계로 정보 수집이라는 것이 새로운 문제로 떠오르고 있다. 이에 에이전트를 기반으로 구성된 분산 디지털 도서관상에서 웨 정보 서비스를 제공하기 위한 로봇 에이전트를 설계.구현하였다. 구현된 로봇은 JAVA와 RMI를 기반으로 에이전트화를 통해 분산환경 구조를 갖추고 있으며, 멀티 쓰레드와 로봇 제어 알고리즘을 통해 정보의 수집 및 관리에 있어서 로봇의 신뢰도를 향상 시켰고 DBMS와 에이전트의 연계를 통한 대용량 처리 기능과 관리자의 관리의 편리성을 도모하기 위해 자동화 기능을 갖추었으며, 로봇과 관련되어 발생할 수 있는 부하를 최소화 할 수 있도록 하였다.

• Proceedings of the Korean Information Science Society Conference
• /
• 1998.10a
• /
• pp.430-432
• /
• 1998

디지털도서관은 디지털로 표현된 음성, 화상, 문서 등 다양한 유형의 정보들이 통신망을 통하여 손쉽게 전급하고 원하는 형태로 표현할 수 있는 새로운 개념의 도서관이다. 우리는 분산 환경에서 도서관 모델을 연구해 왔고 디지털도서관 내부에 분산되어 저장된 데이터(내부데이터)를 검색하고 이용할 수 있는 DLInfra를 구현했다. 본 논문에서는 기존 DLInfra 구조의 수정 없이 외부서비스 제공자가 제공하는 외부데이터를 관리 및 검색할 수 있는 확장된 구조를 제안한다. 이를 위하여 외부 데이터를 검색 및 등록하기 위하여 프로토콜 게이트웨이와 외부데이터 등록 에이전트 설계 및 구현하였다.

• Bulletin of the Korean Chemical Society
• /
• v.33 no.5
• /
• pp.1597-1602
• /
• 2012

In this study, we determined the 3D-structure of Arabidopsis thaliana KAPAS by homology modeling. We then investigated the binding mode of compounds obtained from in-house library using computational docking methods. From the flexible docking study, we achieved high dock scores for the active compounds denoted in this study as compound $\mathbf{3}$ and compound $\mathbf{4}$. Thus, we highlight the flexibility of specific residues, Lys 312 and Phe 172, when used in active sites.

• The Bulletin of The Korean Astronomical Society
• /
• v.36 no.1
• /
• pp.70.2-70.2
• /
• 2011

Ultra-high energy cosmic rays(UHECRs) refer cosmic rays with energy above 1018eV. UHECR experiments have employed air shower simulations to quantify the properties of cosmic rays. Using COSMOS and CORSIKA, we have produced a library of over 15000 thinned extensive air shower(EAS) simulations with the primary energies ranging from 1018.5eV to 1020eV and the zenith angle of primary cosmic ray particles from 0 to 45 for proton and iron primaries. We have compared the results from CORSIKA and COSMOS. The comparison has shown perceptible differences in the ground distributions, longitudinal distributions, Calorimetric energy, and Xmax distributions. We have also measured the detector response evaluated using GEANT4 simulations. Here, we discuss S(800), i.e. the signal at a distance of 800 m from the shower core, as the primary energy estimator and present the lateral distribution function(LDF) with S(800).

• Journal of the Korean Society for Library and Information Science
• /
• v.46 no.2
• /
• pp.175-197
• /
• 2012

The art museums in South Korea are mostly small-scaled institutions with small amount of art works. Thus, internationally accepted metadata standards such as CDWA and VRA Core may not be efficient to manage their collections. Because of these distinct local characteristics, there is a need to create a set of metadata elements that can be used for the art museum community in the country. This research aims to propose a set of metadata elements customized to fit into the context of small-scaled art museums in South Korea. The construction of the element set was not from scratch but on the basis of existing standards such as CDWA, VRA Core, and Dublin Core. By identifying core elements that are indispensable in describing art works and collecting opinions of experts in art museums, the proposed set of metadata elements is expected to support the operation and management of art works and satisfy the localized needs of the art museum community.

• International Journal of Knowledge Content Development & Technology
• /
• v.8 no.4
• /
• pp.55-74
• /
• 2018

Faculty advisors play a vital role in a learning and adjustment process of doctoral students at their work, department, university and discipline by sharing and exchanging relevant information and knowledge in the profession. Despite the important role of information practice in doctoral advising, few studies have investigated the informational aspects of faculty advisors and their students. Thus, this study aims to consider the distribution of information exchanged between faculty advisors and their doctoral students and relate them to doctoral students' demographic characteristics (gender, age, race and/or ethnicity, degree, and stage of doctoral work). The findings of this study show that overall information exchange is most frequent at the work level followed by the discipline, school/department, and university levels. In particular, information exchange at the work and discipline levels explains the characteristics of doctoral education, socializing students into both student and professional roles. In addition, there are statistically significant differences in information exchange along certain dimensions according to the advisee's gender, age, race and/or ethnicity, degree, and stage of doctoral study, suggesting that information needs and seeking behavior may vary according to the demographic characteristics of advisees.

• Biomedical Science Letters
• /
• v.6 no.1
• /
• pp.11-17
• /
• 2000

SNAP-25 was first investigated as a neuron-specific protein preferentially expressed in CA3 pyramidal neurons of mouse hippocampus. It is a presynaptic plasma membrane protein in the nerve cell and plays an important role in the synaptic vesicle membrane docking and fusion pathway. We have recently isolated SNAP-25 cDNA from a rat brain cDNA library using a probe of Z2 cDNA. It consisted of 2,101 bp and an open reading frame (ORF) was identified between nucleotides (nt) 209 and 827. The AUG codon (nt 209∼211) was surrounded by CTACCATGG, which corresponded to the consensus sequence of ribosomal binding site. The ORF was terminated by TAA (nt 827∼829) to encode a polypeptide of 206 amino acid residues. The 3'-untranslated region contained two extensive stretches of repeated (CA)28 and (CA)19 at positions 925∼980 and 1645∼1682. It is noteworthy that cysteine residues were clustered in the span of amino acid residues 84∼991 : Cys-Gly-Leu-Cys-Val-Cys-Pro-Cys. Rat SNAP-25 showed 88% and 97% identity in nucleotide sequences to that of human and mouse, respectively. Amino acid sequence of rat SNAP-25 showed 100% identity to that of mouse and human SNAP-21.

• Journal of Microbiology and Biotechnology
• /
• v.12 no.5
• /
• pp.807-812
• /
• 2002

In order to analyze the cellular proteins which interact with core protein of hepatitis C virus (HCV), a yeast two-hybrid screening technique was employed. A carboxyl terminus truncated core protein, which contained amino acid residues from the 1st to 120th, was used as a bait to screen cellular proteins. The expression library prepared from HeLa cell was screened and 400 positive clones were selected. The 75 clones from the positive clones were sequenced and analyzed by undergoing the Blast search. Interestingly, 7 out of the 75 clones encoded E7 antigen of human papilloma virus (HPV). We studied in detail the Interaction between the truncated version of HCV core and E7 antigen in vitro. The core$_{120}$ protein expressed in chimeric form with G57 was able to bring down the E7 protein of HPV type 18 expressed in bacteria. It is therefore suggested that the core of HCV might affect the interaction between E7 and a normal cellular tumor suppressor, known as Rb protein.