• 대한수학회지
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• 제42권1호
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• pp.135-151
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• 2005

In this paper, we obtain some properties of the sequences $U^{q}_n\;and\;V^{q}_n$ introduced in [6]. We find polynomial representations and formulas of them. For q = 5, $U^{5}_n$ is the Fibonacci sequence $F_n\;and\;V^{5}_n$ is the Lucas sequence $L_n$.

• 한국인쇄학회지
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• 제3권1호
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• pp.1-10
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• 1985

In Graphic art reproduction process it is important to realize that which set of inks and their densities (film thickness) and which set of halftone positive should be aimed at. in order to meet the demand for good color reproduction. There have been various studies to calculation the color reproduction of the graphic arts. however. these study were based on the assumed characteristics of the materials. In this study the relationship between wet-trapping (wet on wet-printing) and increases of ink layer and printing sequence are examined.

• 대한생식의학회:학술대회논문집
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• 대한불임학회 2005년도 제49차 추계학술대회
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• pp.140.1-140.1
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• 2005

• 대한기계학회논문집
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• 제3권1호
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• pp.10-17
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• 1979

The exterior ballistics of small rifles mist be analyzed for the shooter and coach who are seriously interested in attainment of maximum performance in the art of rifle marksmanship. It provides also a basic reference material for the designers of rifles having better hitting rates. The exterior ballistics are computed using a state vector analysis and presented to facilitate use by individuals according to the atmospheric conditions. The ballistics are changed by the pressure, temperature and humidity of the air.

• Journal of information and communication convergence engineering
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• 제1권1호
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• pp.39-43
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• 2003

The technology required to advance the state of the art of ultra-high-intensity excimer amplifier construction to the 100 J/100fs output pulse level is identified. The preliminary design work for very large final amplifier pumped by electron beam module is described, and key design problems and approaches are presented and discussed in detail based on the recent experimental and theoretical results.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2004년도 SMICS 2004 International Symposium on Maritime and Communication Sciences
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• pp.1-5
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• 2004

In this paper, we propose a novel approach for evolving the architecture of a multi-layer neural network. Our method uses combined ART1 algorithm and Max-Min neural network to self-generate nodes in the hidden layer. We have applied the. proposed method to the problem of recognizing ID number in student identity cards. Experimental results with a real database show that the proposed method has better performance than a conventional neural network.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2010년도 춘계학술발표논문집 1부
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• pp.273-276
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• 2010

음성신호를 관찰하였을 때 성문특성으로 인해서 고주파쪽 특성이 약화되는 경향이 있다. 약화된 고주파 특성을 보상하기 위하여 프리 엠퍼시스 필터를 통해 보상하고 있다. 프리 엠퍼시스 필터를 간단한 수식으로 표현하면 y(n)=s(n)-As(n-1)와 같이 차분 방정식으로 나타낼 수 있다. 여기서 A값은 보통 0.9에서 1사이의 값을 사용한다. 본 논문에서는 QMF 필터를 이용하여 입력신호를 고주파와 저주파의 2개의 대역으로 분할하여 각 밴드에 프리 엠퍼시스 필터를 적용하여 약화되어진 특성을 정확히 보상하는 방법을 제안한다.

• 품질경영학회지
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• 제21권1호
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• pp.78-95
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• 1993

The art of designing and analyzing fault-tolerant computers is surveyed with special emphasis on problems of analyzing the behavior of computers that have autonomous repair capability. The survey covers the following topics : (1) general issues in computer reliability, (2) fault-tolerance state relations and requirements, (3) computational hierarchy, (4) fault characteristics, (5) fault diagnosis, (6) fault-tolerance schemes for logic network and machines, (7) fault-coverage effects, and (8) fault-tree analysis of coverage. This paper does not include techniques for verifying nonredundant hardware or system software designs or for verifying the correctness of application programs.

• 한국문헌정보학회지
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• 제49권1호
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• pp.45-67
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• 2015

본 연구의 목적은 KCI의 인문, 사회, 예술체육 분야 저자키워드를 기반으로 구축한 구조적 학술용어사전 데이터베이스 시스템 STNet에 실제 입력된 용어들의 의미적 관계들을 분석하여 관계 유형을 최적화하고 관계명을 세분화하는 방안을 기술하는 것이다. 분석 결과, 관계 유형과 관계명을 최적화하기 위해서는 빈도수에 의한 관계명 신설 또는 관계의 유형화 제한, 관계의 방향성 고려, 기존 관계명 반영의 4가지 논리적 기준이 필요한 것으로 나타났다. STNet의 "실존인물" 클래스를 테스트베드로 삼아 이 기준을 적용해 관계 유형을 최적화하고 관계명을 세분화한 결과 원래 RT, RT_X, RT_Y로 연결된 1,743건의 관계 중 1,135건이 세분화되는 것으로 나타났다. 이는 약 65%의 RT 관계가 구체화된 것으로 사전 구축 및 검색 단계에서의 유용성 측면에서 상당한 의미가 있음을 보여주는 것이다.

• Clinical and Experimental Reproductive Medicine
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• 제44권1호
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• pp.47-51
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• 2017

Objective: This study was designed to report the status of assisted reproductive technology (ART) therapy in South Korea between January 1, 2012 and December 31, 2012. Methods: A localized online survey, originally developed by the International Committee Monitoring Assisted Reproductive Technologies, was first launched and provided to all available ART centers via email in 2015. Fresh embryo transfer (FET) cases were categorized as standard in vitro fertilization, intracytoplasmic sperm injection (ICSI), or half-ICSI. Thawed embryo transfer (TET) and other related procedures, including surgical sperm retrieval, were surveyed. Results: Data from 33,956 ovum pick-up procedures were provided by 75 clinics in 2012. Of the 33,088 cycles in which ovums were retrieved, a complete transfer was performed in 90.5% (29,932 cycles). In addition, 10,079 FET cycles were confirmed to have resulted in clinical pregnancy, representing a pregnancy rate of 30.5% per ovum pick-up and 33.7% per ET. The most common number of embryos transferred in FET was 2 (41.6%), followed by 3 (34.0%), and non-elective single ETs (10.0%). Of the 10,404 TET cycles in which transfer was completed, 3,760 clinical pregnancies (36.1%) were confirmed by ultrasonography. Conclusion: The overall clinical pregnancy rate for FET and TET cycles in 2012 was higher than in 2011 (33.7% vs. 33.2% and 36.1% vs. 31.1%, respectively). The most common number of embryos transferred in FET cycles was 2, unlike in 2011.