• Title/Summary/Keyword: Hwang Sung-Ha

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Android plagiarism detection through Dalvik instruction similarity comparison (Dalvik명령어 유사도 비교를 통한 안드로이드 표절 탐지 기법)

  • Choi, Sung-ha;Hwang, Na-hyun;Park, Heewan
    • Proceedings of the Korea Information Processing Society Conference
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    • 2012.04a
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    • pp.796-799
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    • 2012
  • 스마트폰 애플리케이션 중에서 안드로이드 앱은 자바를 기반으로 한다. 따라서 자바 프로그램과 마찬가지로 디컴파일러 도구를 활용하여 원본 소스 코드를 얻어낼 수 있기 때문에 코드 도용에 대해서 매우 취약하다. 본 논문에서는 안드로이드에 대한 코드 도용과 표절을 막기 위한 기법을 제안한다. 효과적인 코드 도용 및 표절 여부를 탐지하기 위한 방법으로서, 안드로이드 달빅(Dalvik) 코드에 대해서 요약 단계를 거친 후 유사도를 측정하는 방법을 사용한다. 기존의 안드로이드 유사도 비교 연구에서는 달빅 코드가 정확하게 일치해야만 유사도가 높게 측정될 수 있었지만, 요약 단계를 통해서 변환된 달빅 코드를 비교하면 코드 도용시 일부 코드의 의도적인 수정이 있더라도 유사도가 높게 측정된다. 그 결과, 본 논문에서 제안하는 표절 탐지 기법이 기존 연구와 비교하여 표절에 대한 탐지 능력이 우수함을 확인하였다.

Genomic Fingerprinting of genera Bifidobacterium using Microbial Uniprimer Kit

  • Hwang, Young-Chol;Park, Jong-Sun;Kang, Byoung-Yong;Choi, Sung-Sook;Kim, Kyung-Jae;Ha, Nam-Joo
    • Proceedings of the PSK Conference
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    • 2003.10b
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    • pp.163.2-163.2
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    • 2003
  • The genera Bifidobacterium is a member of the normal intestinal flora in humans, and important in food industry. In order to test the genetic identity of this bacterial genera, four primers originated from rice genome (SRILS Microbial $UniPrimers^{TM}$ kit) were used in molecular typing of 7 Bifidobacterial species and 20 isolates from various source. SRILS Microbial $UniPrimers^{TM}$ kit were effectively applied to genomic fingerprinting of various organism such as plant, animal and microorganism. (omitted)

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Canine Multicentric Large B Cell Lymphoma with Increased Mott Cells Diagnosed by Flow Cytometry

  • Yang, Yeseul;Jung, Jae-Ha;Hwang, Sung-Hyun;Kim, Yongbaek
    • Journal of Veterinary Clinics
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    • v.38 no.1
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    • pp.36-40
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    • 2021
  • A 12-year-old dog was referred due to multiple superficial lymphadenopathy. On cytology, each lymph node showed different cell populations where some of them consisted of intermediate to large lymphocytes with frequent Mott cells. Presence of Mott cells along with immature lymphocytes made the cytological diagnosis challenging, and therefore, supplementary diagnostic tests including PCR for Antigen Receptor Rearrangement (PARR) assay and flow cytometry were performed. This case report illustrates the value of flow cytometry in the diagnosis of lymphadenopathy with ambiguous cytologic findings.

Exploring the Key Factors that Lead to Intentions to Use AI Fashion Curation Services through Big Data Analysis

  • Shin, Eunjung;Hwang, Ha Sung
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.16 no.2
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    • pp.676-691
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    • 2022
  • An increasing number of companies in the fashion industry are using AI curation services. The purpose of this study is to investigate perceptions of and intentions to use AI fashion curation services among customers by using text mining. To accomplish this goal, we collected a total of 34,190 online posts from two Korean portals, Naver and Daum. We conducted frequency analysis to identify the most frequently mentioned keywords using Textom. The analysis extracted "various," "good," "many," "right," and "new" at the highest frequency, indicating that consumers had positive perceptions of AI fashion curation services. In addition, we conducted a semantic network analysis with the top-50 most frequently used keywords, classifying customers' perceptions of AI fashion curation services into three groups: shopping, platform, and business profit. We also identified the factors that boost continuous use intentions: usability, usefulness, reliability, enjoyment, and personalization. We conclude this paper by discussing the theoretical and practical implications of these findings.

Design of Web based Plasma Properties Reference Data Collection and Evaluation System (Web기반 Plasma 물성 참조데이터 수집평가 시스템 설계)

  • Park, Jun-Hyoung;Hwang, Sung-Ha;Jang, Won-Suk;Kwon, Duek-Chul;Song, Mi-Young;Yoon, Jung-Sik
    • Proceedings of the Korea Information Processing Society Conference
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    • 2010.04a
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    • pp.1062-1065
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    • 2010
  • Plasma 물성 데이터는 Plasma내에서 일어나는 입자(전자, 원자, 이온, 분자 등)들의 충돌에 대한 데이터로써 Plasma 발생 장치 설계 및 제어의 핵심 요소이며, Plasma 공정조건 확립을 위한 필수 정보가 된다. 참조표준은 과학기술데이터나 정보에 대하여 정확도와 신뢰도에 대한 분석 및 평가가 이루어진 공인데이터를 말한다. 이러한 플라즈마 물성 정보를 체계적으로 관리하고 신뢰성 있는 데이터를 필요로 하는 산업체에 지원하기 위하여 특정 참조표준과 참조데이터로 제정, 보급하는 Plasma 물성 참조표준 수집평가 시스템이 필요하고, 이에 대한 설계가 필요하다.

Foot Keyboard for People with Uncomfortable Arms (팔이 불편한 사람을 위한 발 키보드)

  • Sung, Chang-Woo;Ma, Soo-yeong;Kim, Min-jun;Hwang, Yun-ha;Choi, Hun
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2021.05a
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    • pp.418-420
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    • 2021
  • In the 21st century, computers are useful tools for our lives. However, such computers are difficult to use because they are inputted with a mouse and keyboard. The goal of this paper is to design and implement a 'foot keyboard' that can be typed using pedals and using the "cheonjiin" input method with minimal foot movement so that even people with impaired hands can use the computer comfortably.

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Developing a website for daily recovery from COVID-19 (코로나19 일상 회복을 위한 웹 사이트 개발)

  • Kim, Sung Jin;Park, Joo Hwan;Lee, Dong Eun;Ha, Yeon Seok;Heo, Se Jeong;Hwang, Joo Han;Yoon, Young Hyun
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2022.07a
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    • pp.275-278
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    • 2022
  • 본 고는 일상생활 속 다양한 정보들을 제공하는 웹 사이트를 데이터베이스와 연계하여 제작하는 프로젝트를 소개한다. 해당 프로젝트는 코로나19 거리두기 완화 조치에 따라 학교에 익숙하지 못한 학생들에게 학교 주변 시설에 대하여 실용적이며 활용성 높은 정보를 제공하기 위한 웹 사이트를 제작한다. 해당 웹 사이트는 웹 사용자의 편의를 위한 콘텐츠 추가, 점진적인 제공 정보 확대가 예정되어 있어 코로나19 일상생활 회복에 도움이 될 것으로 기대된다.

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Design and Implementation of a Massively Parallel Multithreaded Architecture: DAVRID

  • Sangho Ha;Kim, Junghwan;Park, Eunha;Yoonhee Hah;Sangyong Han;Daejoon Hwang;Kim, Heunghwan;Seungho Cho
    • Journal of Electrical Engineering and information Science
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    • v.1 no.2
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    • pp.15-26
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    • 1996
  • MPAs(Massively Parallel Architectures) should address two fundamental issues for scalability: synchronization and communication latency. Dataflow architecture faces problems of excessive synchronization overhead and inefficient execution of sequential programs while they offer the ability to exploit massive parallelism inherent in programs. In contrast, MPAs based on von Neumann computational model may suffer from inefficient synchronization mechanism and communication latency. DAVRID (DAtaflow/Von Neumann RISC hybrID) is a massively parallel multithreaded architecture which takes advantages of von Neumann and dataflow models. It has good single thread performance as well as tolerates synchronization and communication latency. In this paper, we describe the DAVRID architecture in detail and evaluate its performance through simulation runs over several benchmarks.

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Design and Implementation of User Interface for Grid Service Management (그리드 서비스 관리를 위한 사용자 인터페이스 설계 및 구현)

  • Kim, Hyuk-Ho;Lee, Ha-Na;Hwang, Seung-Bin;Kim, Sung-Woo;Kim, Yang-Woo
    • Proceedings of the Korea Information Processing Society Conference
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    • 2008.05a
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    • pp.609-612
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    • 2008
  • 그리드 컴퓨팅은 가상조직(VO, Virtual Organization)이란 개념을 사용하여 분산된 컴퓨팅 환경을 구축한다. 이러한 가상조직에 존재하는 그리드 서비스 및 그리드 리소스를 활용하기 위해서는 사용자가 직접 서비스 및 자원에 대한 모니터링 작업을 수행해야 한다. 따라서 본 논문에서는 가상조직을 관리하고 가상조직에 존재하는 자원 및 서비스의 모니터링 작업과 그리드 서비스의 배치 및 해지 작업을 수행할 수 있는 웹 기반의 사용자 인터페이스를 제안한다. 웹 기반의 사용자 인터페이스는 사용자에게 편리한 작업 환경을 제공하기 때문에 서비스 및 자원의 활용 측면에서 편리성 및 사용의 용이성을 제공할 수 있다.

Effects of Mixtures of Tween80 and Cellulolytic Enzymes on Nutrient Digestion and Cellulolytic Bacterial Adhesion

  • Hwang, Il Hwan;Lee, Chan Hee;Kim, Seon Woo;Sung, Ha Guyn;Lee, Se Young;Lee, Sung Sill;Hong, Hee Ok;Kwak, Yong-Chul;Ha, Jong K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.21 no.11
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    • pp.1604-1609
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    • 2008
  • A series of in vitro and in vivo experiments were conducted to investigate the effects of the mixture of Tween 80 and cellulolytic enzymes (xylanase and cellulase) on total tract nutrient digestibility and rumen cellulolytic bacterial adhesion rates in Holstein steers. Ground timothy hay sprayed with various levels of Tween 80 and cellulolytic enzymes was used as substrates in an in vitro experiment to find out the best combinations for DM degradation. The application level of 2.5% (v/w) Tween 80 and the combination of 5 U xylanase and 2.5 U cellulase per gram of ground timothy hay (DM basis) resulted in the highest in vitro dry matter degradation rate (p<0.05). Feeding the same timothy hay to Holstein steers also improved in vivo nutrient (DM, CP, CF, NDF and ADF) digesibilities compared to non-treated hay (p<0.05). Moreover, Tween 80 and enzyme combination treatment increased total ruminal VFA and concentrations of propionic acid and isovaleric acid with decreased acetate to propionate ratio (p<0.001). However, adhesion rates of Fibrobacter succinogenes and Ruminococcus flavefaciens determined by Real Time PCR were not influenced by the treatment while that of Ruminococcus albus was decreased (p<0.05). The present results indicate that a mixture of Tween 80 and cellulolytic enzymes can improve rumen environment and feed digestibility with variable influence on cellulolytic bacterial adhesion on feed.