• Proceedings of the KSPS conference
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• 1996.10a
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• pp.300-307
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• 1996

한글은 세계 여느 문자처럼 자연 발생적으로 생긴 문자체계가 아니라 수천년간 인류의 어음에 대한 사유와 고도의 어음기술이 집약된 문자관에 의해 연역적 방법으로 창제된 문자체계이므로 다른 문자와는 차별적인 연구방법이 요구된다. 세종조에 편찬되었던 ${\ll}훈민정음{\gg}{;\}.{\;}{\ll}홍무정운역훈{\gg}{;\}.{\;}{\ll}동국정운{\gg}$는 제작 동기와 목적이 달라서 각각 상이한 어음체계를 가지고 있는데, 각 어음체계가 필요로 하는 글자꼴을 한글은 27개(자음16개, 모음11개)의 기본글자꼴에 발음부위 및 발음방법을 상형한 새로운 글자꼴을 제공하여 각각의 문자체계를 구성하였다. 유교적 언어관의 토양에서 세상 모든 음의 생성원리에 의해 창제된 한글은 바로 세상의 모든 음을 표기할 수 있는 문자체계인 것이다. 이러한 한글음성문자는 오늘날 이질어음체계의 외국어를 표음하는 데에도 예외 없이 적용될 수 있을 뿐만 아니라 글자꼴의 유연성.응용면에서 국제음성문자(I.P.A)보다 월등히 과학적이고 완정한 음성문자로서 기능할 수 있다.

• Microbiology and Biotechnology Letters
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• v.21 no.3
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• pp.247-255
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• 1993

Antitumor activity of Lactobacillus casei YIP 9018(LC9018) was studied in mice by using sarcoma 180(S-180) and Lewis lung carcinoma (3LL). Following the eatablishment of in vivo tumor models such as ascites form S-180, solid form S-180 and 3LL for estimating antitumor activity of Lactobacilli, optimal dose and injection route of heat-killed LC9018 for supperssion of local tumor were examined. Administration of 100ng/mouse of LC9018 significantly inhibited the growth of ascites form S-180, solid form S-180 and 3LL.

• Journal of the Korean Society for Heat Treatment
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• v.9 no.3
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• pp.205-211
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• 1996

Structural studies have been performed on precipitation hardening discovered in $Ll_2$-ordered $Ni_3$(Al,Cr) containing 0.2 and 0.5 mol% of carbon in terms of transmission electron microscopy(TEM). By aging at temperatures around 1073 K after solution treatment at 1423 K, fine polyhedral precipitates appear firstly on the dislocations and then in the matrix. The selected area electron diffraction (SAED) studies revealed that these particles are a $M_{23}C_6$ type carbide which has the cube-cube orientation relationship with the matrix lattice. Weak-beam electron microscopy observations of deformation induced dislocations suggested that the dislocations bypass the carbide particles during deformation.

• Magazine of the Korean Society of Agricultural Engineers
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• v.18 no.4
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• pp.4251-4258
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• 1976

In the construction of earth dam, embankment and highway by filling, a compaction contributes to increasing the density of soil by applying pressure. The effect of compaction depends on various factors such as soil type, moisture content, gradation, consistency, and compaction energy. In this study, the correlations amone maximum dry density, moisture content, dry density, and moisture content are analyzed. Some results obtained in this study are summarizep as follows. 1. The maximum dry density sinoreases with increased of optimum moisture content and the correlations of them can be represented by; ${\gamma}$dmx=a-b(W0) 2. Maximum dry density and liquid limit show negative linear correlation and can be represented by; ${\gamma}$dmx=a-b(LL). 3. Optimum moisture content and liquid limit, plastic limit show positive linear correlation and can be represented by the following equation, W0=a+b(LL) W0=a+b(PL). 4. Liquid limit and plastic limit show positive linear correlation, and can be represented by the following equation, LL=a+b(PL).

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.1069-1080
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• 2008

The mechanical characteristic of Lightweight Foamed Soil(LWFS) are investigated in this research. LWFS is composed of the in-suit soil, cement and foam to reduce the unit-weight and increase compressive strength. The unconfined compressive tests are carried out on the prepared specimens of LWFS with various soil types to investigate the relationship between compressive strength of LWFS and physical properties of soil. The result indicate that coefficient of gradation($C_g$) and liquid limit(LL) are more important factor affecting compressive strength than other physical properties of soil and coefficient of gradation($C_g$) and liquid limit(LL) can standard to determine the optical soil among the in-situ soils for LWFS.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.56 no.11
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• pp.2027-2032
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• 2007

In this paper, digital watermarking method using quad-tree algorithm and the lowest frequency band is proposed. The proposed algorithm searches the coefficient of the watermark by using quad-tree algorithm and inserts the watermark by the Cox's algorithm. The simulation of the proposed algorithm is implemented about the effect of various weight factors in Cox's algorithm, that of embedding watermark in each subband coefficient (HH, LH, HL), and that of embedding in the lowest frequency band (LL). As a simulation result, the bigger weight factors in Cox's algorithm show strong to noise. The watermarking performance of simultaneously embedding in HH, LH, and HL band is better than that of different cases. In addition, insertion the watermark to the LL band about $30{\sim}60%$ of all watermarks improves the watermarking performance in comparison with the case of not using the LL band.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.1
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• pp.177-183
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• 2011

One of the methodologies for the type-checking of an expression is the attribute grammar. But this attribute grammar is difficult to write because two attributes should be used with the full understanding of parsing steps. So this paper proposes a methodology to construct an expression attribute grammar easily. It shows the possibility to check the type of an expression with only one attribute through a grammar construction method.

• Proceedings of the KSPS conference
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• 2005.11a
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• pp.13-16
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• 2005

As language learning that utilizes speech and information processing technology is getting popular. Speech Information Technology & Promotion Center(SiTEC) has created and is distributing speech corpora for STiLL in order to support basic research and development of products. We will introduce the corpus for Korean and those for English which we have created and are distributing.

• Journal of Veterinary Clinics
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• v.37 no.4
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• pp.213-216
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• 2020

Two cats were presented to the Dana Animal Hospital Eye Center and were diagnosed with corneal sequestrum through full ophthalmic examination. After lamellar keratectomy using a reusable corneal trephine blade and a crescent microsurgical knife, porcine urinary bladder submucosa extracellular matrix (UBM, ACeLL Vet^® corneal disc) was applied to the corneal defects. In both cases, no corneal sequestrum recurrences were observed until 119 days and 253 days after the surgery, respectively. Porcine UBM could be recommended as a surgical scaffold for treatment of corneal sequestrum in cats.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.766-769
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• 2000

OMG의 공식 표준으로 자리 잡은 UML은 9 종류의 기본 모델들을 기초로 하여 다양한 관점에서 대상 소프트웨어 시스템을 모델링 하도록 지원해주고 있다. 특히 Use Case의 경우 시스템 사용자와의 대화의 수단으로 시스템이 최종 사용자에게 제공하는 서비스들을 잘 표현하고 있다. 그러나 객체 모델이나 순차도 등의 다른 모델들에 비해 설명이 보다 모호하고, 정형화 되어 있지 않아서, 특히 전사적인 규모의 실무에 Use Case 모델 을 적용할 경우, 여러 가지 어려움들이 있다. 개념 단계와 상세 단계에서의 일관성 유지 문제, 하부 시스템으로 나누어 작업 시, ${\ll}include{\gg}$ 나 ${\ll}extend{\gg}$ 관계의 Use Case에 대한 배치, 전체나 일부에서 공통으로 사용되는 ${\ll}include{\gg}$ Use Case의 표현 문제 등이 그것들이다. 본 논문에서는 실무 적용 시 부딪힐 수 있는 Use Case 모델링의 그러한 문제점들에 대한 실무적인 지침들을 사례 연구와 함께 제안하고자 한다.