• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 V
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• pp.2855-2858
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• 2003

In this paper, we have studied a design method to make Linux system enriched with a duplication facility. We have designed a duplication module which would be inserted into Linux. The design have to keep track of three foundations, such as fault detection, reconfiguration, a handling duplication data. To conclude, Linux duplication module is free put on a Linux kernel. so in the future, It can cope with a change in Linux duplication system flexiblely.

• 한국임상약학회지
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• 제20권3호
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• pp.262-267
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• 2010

Therapeutic duplication of prescriptions is the most frequently reported inappropriate drug use in Korea. To prevent significant problems during drug prescribing and dispensing, prospectively, development of standard including drug lists considered as therapeutic duplications for the prioritized drug classes first would be necessary. This study was aimed to analyze frequent drug classes of therapeutic duplications by healthcare providers in clinical practice settings. National health claims data for drug review and reimbursement (1,426,065 prescriptions dated March 19, 2008) were analyzed. Therapeutic duplication was defined as the prescription including more than 2 ingredients belonging to the same KFDA drug classification numbers that considered to have therapeutic similarities. The following 3 drug classes were mostly frequent therapeutic duplication classes: 114 anti-pyretics, analgesics and anti-inflammatory drugs; 117 drugs for psycho-nervous system; 141 Antihistamines. About 3.5% of overall prescriptions analyzed showed therapeutic duplications. This result might be starting step to develop DUR therapeutic duplication standard.

• 한국임상약학회지
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• 제22권1호
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• pp.73-80
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• 2012

This study was to determine the inappropriate drug use in pediatric outpatients who received 2 or more prescriptions on the same day. Retrospective drug utilization reviews (DURs) were implemented to samples obtained from national health insurance claims data during December 2008 to February 2009, using 5 DUR criteria (duplication, drug-drug interaction, drug-disease interaction, drug-age contraindication, incorrect dosage) established in the Drug Information Framework (DIF)-$Korea^{TM}$, DUR program. Among 38,451 claims analyzed in the study, 74.7% had more than one conflicts in the 5 DUR modules. Among 16,472 patients analyzed, 49.6% had conflicts with duplication criteria composing of ingredient duplication (23.3%) and therapeutic class duplication (39.6%). Incorrect dosages were found in 73.6% of patients and under-dosage conflicts accounted for 59.9%, which was higher than over-dosage conflicts (38.3%). In this study, inappropriate drug prescriptions such as under-dose, pediatric contraindication and therapeutic duplication were prevalent in pediatric outpatient settings, suggesting much more awareness to the society, to prevent drug related problems in a vulnerable pediatric group.

• 시스템엔지니어링학술지
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• 제19권1호
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• pp.91-106
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• 2023

Multidimensional efforts such as budgeting, organizing, and institutionalizing are being carried out for the adoption of defense AI. However, there is little interest in eliminating duplication of defense resources that may occur during the AI adoption. In this study, we propose a theoretical conceptual model to optimize duplication of AI technology that may occur during the AI adoption in the vast defense field. For a systematic approach, the JCA of the US DoD and system abstraction method are applied, and the IMO logical structure is used to decompose AI requirements and identify duplication. As a result of analyzing the effectiveness of our conceptual model through six example defense AI requirements, it was found that the amount of requirements of data and AI technologies could be reduced by up to 41.7% and 70%, respectively, and estimated costs could be reduced by up to 35.5%.

• Journal of Crop Science and Biotechnology
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• 제10권4호
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• pp.237-242
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• 2007

Genome duplication(i.e. polyploidy) is a common phenomenon in the evolution of plants. The objective of this study was to achieve a comprehensive understanding of genome duplication for SNP discovery by Thymine/Adenine(TA) cloning for confirmation. Primer pairs were designed from 793 EST contigs expressed in the roots of a supernodulating soybean mutant and screened between 'Pureunkong' and 'Jinpumkong 2' by direct sequencing. Almost 27% of the primer sets were failed to obtain sequence data due to multiple bands on agarose gel or poor quality sequence data from a single band. TA cloning was able to identify duplicate genes and the paralogous sequences were coincident with the nonspecific peaks in direct sequencing. Our study confirmed that heterogeneous products by the co-amplification of a gene family member were the main cause of obtaining multiple bands or poor quality sequence data in direct sequencing. Counts of amplified bands on agarose gel and peaks of sequencing trace suggested that almost 27% of nonrepetitive soybean sequences were present in as many as four copies with an average of 2.33 duplications per segment. Copy numbers would be underestimated because of the presence of long intron between primer binding sites or mutation on priming site. Also, the copy numbers were not accurately estimated due to deletion or tandem duplication in the entire soybean genome.

• 컴퓨터교육학회논문지
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• 제17권2호
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• pp.97-106
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• 2014

다양한 데이터 집중적인 응용 서비스의 증가로 인해 사용자 데이터가 급증하고 있으며 방대한 양의 데이터 저장 및 백업에 대한 관심이 높아지고 있다. 특히 기존 일반적 증분백업 기술들이 SAN 기반의 대용량 데이터 서비스 환경에 적합하지 않아 백업 시스템의 성능저하 문제가 심각하다. SANique Smart Vault 시스템은 이러한 요구사항을 만족하는 데이터 중복제거 기반의 고성능 백업 솔루션이다. 본 논문에서는 SANique Smart Vault 시스템의 개략적 시스템 구조에 대하여 설명하고 특히 백업대상 목록의 탐색과정을 개선한 저널링 기반의 델타 증분백업 기술 및 레코드 레벨의 데이터 중복제거 기능의 구현기술에 대하여 설명한다. 또한 제안된 무기한 증분백업 기능과 데이터 중복 제거 기능은 타 상용 시스템들과의 성능비교를 통해 백업 오버헤드 측면의 성능 우수성을 보인다.

• 한국공간정보시스템학회 논문지
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• 제9권2호
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• pp.81-91
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• 2007

본 논문에서는 공간 데이터 웨어하우스에서 시공간 분석지원을 위한 공간 데이터의 비중복 적재 기법을 제안한다. SDW는 이기종의 다양한 서비스를 지원하는 SDBMS로부터 공간 데이터를 추출한다. 제안 기법에서는 SOW에 소스로 참여하는 SDBMS에서 변경된 부분만을 추출하고, 이를 공간연산을 통해 중복된 데이터를 제거한 후 통합된 형태로 적재함으로써 빠른 공간 데이터 분석을 지원할 수 있으며, 저장 공간의 낭비를 줄일 수 있다. 이는 공간 마이닝등의 시간에 따른 분석 및 예측 분야에 효율적인 형태로 공간 데이터를 적재한다.

• 전자공학회논문지
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• 제49권12호
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• pp.149-155
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• 2012

SSD(Solid State Disk)는 다수의 NAND 플래시 메모리로 구성되었으며 내부에 고성능 컨트롤러와 캐시 버퍼를 포함한 스토리지 장치이다. NAND 플래시 메모리는 제자리 덮어쓰기가 안되기 때문에 파일시스템에서 유효페이지가 갱신 및 삭제시 무효페이지로 전환되어 완전히 삭제하기 위해서는 가비지 컬렉션 과정을 거쳐야한다. 하지만 가비지 컬렉션은 지연시간이 긴 Erase 연산을 포함하기 때문에 SSD의 I/O 성능을 감소시키고 마모도를 증가시키는 문제가 된다. 본 논문에서는 입력데이터에 대하여 유효데이터와 무효데이터에서 중복검사를 실행하는 기법을 제안한다. 먼저 유효데이터에 대한 중복제거 과정을 거치고 그 다음에 무효데이터 재활용 과정을 거침으로써 중복률을 향상시켰다. 이를 통하여 SSD의 쓰기 횟수와 가비지 컬렉션 횟수를 감소시켜 마모도와 I/O 성능이 개선되었다. 실험결과 제안한 기법은 유효데이터 중복제거와 무효데이터 재활용을 둘다 하지 않는 일반적인 경우에 비해서 가비지 컬렉션 횟수가 최대 20% 감소하고 I/O 지연시간이 9% 감소하였다.

• 한국인터넷방송통신학회논문지
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• 제12권6호
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• pp.147-153
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• 2012

IT 환경이 점점 복잡해지고 인프라의 규모가 커지면서 정보시스템의 안전성과 데이터의 가용성에 대한 인식이 더욱 가중되고 있다. 이처럼 정보자산의 가치가 중요시되는 시점에서 재해복구 대응책을 위한 고성능 백업시스템에 대한 연구는 비즈니스에 직접적인 영향을 미치는 분야이다. 그러므로 본 연구는 고성능 백업시스템을 위한 복제 데이터의 정합성검증을 시행하였다. 그리고 DB 테이블 복제 처리 성능 비교와 네트워크 대역폭에 따른 복제 시스템의 트랜잭션 처리 속도와 성능 평가를 시행하였다.

• 정보학연구
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• 제9권4호
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• pp.57-63
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• 2006

The intelligent elder brother groove network robot service the new broadband presence line is conversionce application service. Robot control data transmission hazard UDP packet of the remote control data which stands duplication necessary to transmit. TCP the error ratio to be high qualitative recording transmission pattern it of the transmission unit and is irregular the distance is distant to show and also the transmission lag is visible increases. The recording packet drop whose UDP degree error ratio will be high is frequent and does not arrive packet little by little increases is a possibility of knowing in the transmission unit. The technique which it proposes with traffic pattern of the transmission unit is visible the transfer characteristic of the same shape from 1% packet error ratio degree. The effective transmission technique of the robot control data which puts a base in UDP protocols was proposed from the present paper. Following research it leads and it follows the duplication transmission number of time in error rate of radio link and it was thought all that controls petty the research of the mechanism which progresses is necessary.