• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2007년도 추계 종합학술대회 논문집
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• pp.445-448
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• 2007

연속간행물 종합목록은 국내 여러 기관에 산재한 연속간행물의 정보를 통합하여 공유하고, 정보자원화하기 위한 필수 도구로서 최적화된 목록 및 소장 정보를 생성하여 이용자에게 학술지에 대한 신뢰성 있는 정보를 제공하는 것이 목적이다. 이를 위해서는 데이터의 일관성이 무엇보다 중요하며 레코드의 중복성은 종합목록 품질평가에 있어 중요한 척도 중에 하나가 된다. 본 연구는 연속간행물 기반의 종합목록 데이터의 품질을 개선하기 위하여 오류 데이터로 인한 중복레코드를 최소화하기위한 방안을 마련하는데 있다. 이를 위하여 연속간행물의 중복레코드 검증 요소를 분석하고 검증 프로세스를 제안하였다.

• Journal of Acupuncture Research
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• 제29권1호
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• pp.61-66
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• 2012

Objectives : The purpose of this study was to examine the duplicate effect of thread-embedding therapy against obesity. Methods : 5 women from 20 to 30 with obesity were treated with thread-embedding therapy and compared the results with physical measurement, body composition tests and fat thickness measured by ultrasound. Results : The thread-embedding therapy locally reduced body size and fat thickness and had a cumulative effect, but showed the greatest effect in the abdominal region. It didn't affect to the overall change of body composition. Conclusions : The duplicate procedure of thread-embedding therapy for obesity had a cumulative effect, but it depended on the treatment region.

• KSBB Journal
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• 제7권3호
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• pp.155-160
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• 1992

식량으로 쓰이는 식물 단백질은 공통적으로 Isoleucine, Lysine, Methionine, Threonine, Tryptoplan등 5가지 필수아미노산이 결핍되어있다. 본 연구에서는 이러한 필수아미노산을 다량 함유한 단백질을 발현시킬 수 있는 합성유전자를 fekaqo에서 높은 수준으로 발현시키고자 강한 식물 promoter로 알려진 CaMV 35S, CaMV duplicate 35S promoters를 사용하였다. 형질 전환 및 재분화된 식물을 분석한 결과 본 합성 유전자가 식물 nuclear genome 안으로 도입을 안정하여 잘되었고 mRNA수준까지는 유의적인 증가를 보였으나 단백질 수준에서는 유의적 수준의 증가를 관찰할 수 없었다.

• 한국문헌정보학회지
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• 제37권4호
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• pp.69-88
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• 2003

본 연구는 KERIS 종합목록의 품질 개선을 위하여 새로운 유형의 중복 데이터 색출 알고리즘을 개발한 것이다. 새로운 알고리즘에서는 현재 적용하고 있는 것과 같은 MARC 데이터 일치여부 비교 방식에서 탈피하여 언어별 서지 유형별 다른 비교방식을 적용하였다. 아울러 비교 요소간의 유사성을 측정하고, 각 요소의 중요도에 따라 가중치를 차등 부여하는 방식을 병행하였다. 새로 개발한 알고리즘의 효용성을 입증하기 위하여 최근 종합목록에 업로드된 데이터 210,000건을 추출하여 실험용 마스터 파일을 구축하고 7,649건을 두 개의 알고리즘으로 처리한 결과 새로운 알고리즘에서 중복레코드의 색출 비율이 36.2% 더 높게 나타났다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권8호
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• pp.4300-4314
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• 2019

With the development of video-related applications, media content has increased dramatically through applications. There is a substantial amount of near-duplicate videos (NDVs) among Internet videos, thus NDVR is important for eliminating near-duplicates from web video searches. This paper proposes a novel NDVR system that supports large-scale retrieval and contributes to the efficient and accurate retrieval performance. For this, we extracted keyframes from each video at regular intervals and then extracted both commonly used features (LBP and HSV) and new image features from each keyframe. A recent study introduced a new image feature that can provide more robust information than existing features even if there are geometric changes to and complex editing of images. We convert a vector set that consists of the extracted features to binary code through a set of hash functions so that the similarity comparison can be more efficient as similar videos are more likely to map into the same buckets. Lastly, we calculate similarity to search for NDVs; we examine the effectiveness of the NDVR system and compare this against previous NDVR systems using the public video collections CC_WEB_VIDEO. The proposed NDVR system's performance is very promising compared to previous NDVR systems.

• 한국정보통신학회논문지
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• 제15권11호
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• pp.2500-2504
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• 2011

살아있는 생명체는 세포로 구성되며 성장 분열을 통해 스스로 복제할 수 있는 능력을 지녔다. DNA상의 변이, 즉 돌연변이는 자손의 생존과 번식에 불리하게 작용할 수 있고 이점을 줄 수 있는 양면성을 지녔다. 본 연구에서는 DNA 이중나선은 복제 주형으로 사용되기 위해서는 먼저 이중나선이 열리고 단일 가닥으로 분리되어야 한다. 이중 나선구조결합에서의 결합의 오류부분의 위치를 찾아내고 복구하는 방법을 제시한다.

• 한국환경보건학회지
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• 제38권5호
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• pp.386-392
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• 2012

Objectives: This study aims to evaluate the blood concentrations and dietary intake for 24-hour food duplicate of low level polycyclic aromatic hydrocarbons (PAHs). Design: The geometric means of the blood concentrations and dietary intake of 16 PAHs in college student candidates were simply compared with instrumental detection. Methods: The concentrations of 16 PAHs in venous blood and 24-hour food duplicates were analyzed with head-space solid phase microextraction (HS-SPME) of gas chromatography-mass spectrometry. Results: Naphthalene, acenaphthylene, pyrene, benz(a)anthracene, chrysene, and acenaphthene among the 16 analyzed PAHs were simultaneously detected both in venous blood and 24-hour food duplicate samples. Conclusion: The main exposure source of the six PAHs is thought to be oral intake from food through low level non-occupational exposure.

• 한국대기환경학회지
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• 제14권5호
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• pp.507-518
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• 1998

A field comparison study was carried out to quantify differences among various sampling and analytical methods for volatile organic compounds (VOCs) at a site in Vlsan in June 1997. Air sampling containers (SUMMA canisters) were used by the Korea Institute of Science and Technology (KIST) and adsorption tubes (carbotrap) were used by Yeungnam University (YN Univ.) for sampling ambient air. Duplicate samples obtained by KIST were analyzed by KIST with a GC-MS system for aromatics and halogenated hydrocarbons and by Atm AA with a GC -FID system for C2∼C9 hydrocarbons, respectively. The adsorption tube samples were analyzed by YN Univ. with a GC-FID system for aromatics. VOC levels for the duplicate canister sampls analyzed by KIST and Atm AA were in good agreement. Concentrations of aromatics by the adsroption tube method were generally higher than those by the canister sampling method by factor of 1.5 to 2.0. Differences between the two sampling methods were discussed.

• Journal of Communications and Networks
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• 제7권3호
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• pp.385-393
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• 2005

In this paper, we propose a simple algorithm to adaptively adjust the value of dupthresh, the duplicate acknowledgement threshold that triggers the transmission control protocol (TCP) fast retransmission algorithm, to improve the TCP performance in a network environment with persistent packet reordering. Our algorithm uses an exponentially weighted moving average (EWMA) and the mean deviation of the lengths of the reordering events reported by a TCP receiver with the duplicate selective acknowledgement (DSACK) extension to estimate the value of dupthresh. We also apply an adaptive upper bound on dupthresh to avoid the retransmission timeout events. In addition, our algorithm includes a mechanism to exponentially reduce dupthresh when the retransmission timer expires. With these mechanisms, our algorithm is capable of converging to and staying at a near-optimal interval of dupthresh. The simulation results show that our algorithm improves the protocol performance significantly with minimal overheads, achieving a greater throughput and fewer false fast retransmissions.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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• pp.406-409
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• 2008

Clustering data streams has an importance over many applications like sensor networks. Existing hierarchical methods follow a semi fuzzy clustering that yields duplicate clusters. In order to solve the problems, we propose an extended online divisive agglomerative clustering on data streams. It builds a tree-like top-down hierarchy of clusters that evolves with data streams using geometric time frame for snapshots. It is an enhancement of the Online Divisive Agglomerative Clustering (ODAC) with a pruning strategy to avoid duplicate clusters. Our main features are providing update time and memory space which is independent of the number of examples on data streams. It can be utilized for clustering sensor data and network monitoring as well as web click streams.