• 한국음향학회:학술대회논문집
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• 한국음향학회 1995년도 제12회 음성통신 및 신호처리 워크샵 논문집 (SCAS 12권 1호)
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• pp.291-294
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• 1995

본논문은 POW algorithm과 알고리즘을 통해 수행된 결과인 large scale word recognizer를 위한 POW set에 대하여 설명하겠다. Large scale word recognizer를 위한 speech database를 구축하기 위해서는 모든 가능한 phonological phenomenon이 POW set에 포함 되어얗 ks다. 또한 POW set의 음운 현상들의 분포는 추출하고자 하는 모집단의 음운현상들의 분포와 유사해야 한다. 위와 같은 목적으로 다음과 같이 3가지 성질을 갖는 POW set을 추출하기 위한 새로운 algorithm을 제안한다. 1. 모집단에서 발생하는 모든 음운현상을 포함해야 한다. 2, 최소한의 단어 집합으로 구성되어야 한다. 3. POW set과 모집단의 음운현상의 분포가 유사해야 한다. 우리는 약 300만 어절의 한국어 text corpus로부터 5천 단어의 고빈도 어절을 추출하고 이로부터 한국어 POW set을 추출하였다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2012년도 추계학술대회 논문집
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• pp.135-136
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• 2012

Renewable energy is getting more important due to its alternative usage of fossil fuel. This paper discusses the system using Peak-cut alagorithm of solar power which takes great proportion in renewable energy. It also proves the validity of this system by simulation and experiment.

• Environmental Analysis Health and Toxicology
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• 제20권4호통권51호
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• pp.351-358
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• 2005

The n -octanol/water partition coefficient (Pow) is one of the most important parameters employed for estimating a chemiral's environmental fate and toxicity. The shake-flask method, one direct experimental method, i.1 prone to experimental artifacts for highly hydrophobic compounds. Thus, a valid method for direct determination of the Pow of highly hydrophobic compounds is needed. The slow -stirring method has been demonstrated to provide reliable log Pow data to log Pow greater than 5. This study was performed to evaluate the accuracy of slow- stirring experiment for determination of log Pow, particularly for highly hydrophobic compounds. 1, 2, 3, 4-tetrachlorobenzene, hexachlorobezene, 2, 2', 3, 3', 5, 5', 6, 6'-octachlorobiphenyl, decachlorobiphenyl, and p, p'-DDT (4.5$\times$0.02, 5.41$\times$0.06, 7.26$\times$0.04, 7.87$\times$0.10, and 6.03$\times$0.06, respectively. The octanol/water partition coefficient by the slow-stirring method were very similar to the literature values. These results indicate that the slow- stirring method allows for reliable determination of log Pow of highly hydrophobic chemicals.

• Journal of Advanced Marine Engineering and Technology
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• 제34권5호
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• pp.718-724
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• 2010

공동수조와 예인수조에서의 프로펠러 단독특성 차이를 보정할 수 있는 위벽효과 연구를 수행하였다. 우선 공동수조의 실험에서 프로펠러의 상류가 아닌 작동 평면 위치에서 계측된 유속을 프로펠러 전진속도로 정의할 경우, 위벽효과의 수정 량 및 단독특성차이가 현저히 줄어드는 것을 확인하였다. 다음으로 양력판 이론에 의한 단독특성 계산을 통해, 프로펠러 평면에서의 위벽효과를 구하고 앞의 결과에 추가적인 보정을 수행하였다. 그 결과, 예인수조에서의 단독특성과 더욱 더 좋은 일치를 보여 주는 것을 확인하였다.

• 영어영문학
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• 제58권2호
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• pp.327-345
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• 2012

This paper explores how gender, sexuality, momism and national security are intertwined in the POW fictions of the Korean War, revealing the blurred demarcation line of the private and the public during the Cold War era. Works such as Night and Valley of Fire reveal the weakened manhood of the soldiers who were brainwashed or easily succumbed to the enemy during their imprisonment. The novels commonly attribute their weakness to materialism and spiritual corruption prevalent in the society, in addition to mass media including TV. Moreover, a social critic like Phillip Wily provokes the polemical idea of "Momism" which was ardently circulated among some male circles. In Manchurian Candidate, momism is integrated into incest and homosexuality, epitomized by Raymond and his mother. The novel illustrates how momism can be dangerous to national security and devastate the growth of manhood. Mrs. Iselin, a masculinized middle-aged woman, becomes a 'monster' whose overweening desire for power overrides any maternal concern for her son. Such 'monstrosity' exposes the danger of a woman who can castrate a man and manipulate a society. To a certain extent, the same tendency can be found in Turncoat and Night. Both novels reveal how the love of mother brings detrimental impact on boys who become prey to the communist's brainwashing in the POW camps. In short, the POW novels betray society's patriarchal concerns with women's emerging power threatening its ideology.

• 한국음향학회지
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• 제16권2호
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• pp.31-35
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• 1997

본 논문에서는 훈련용 음성 데이터와 무관한 임의의 새로운 어휘를 인식해 낼 수 있는 가변 어휘 단어 인식기 개발에 대하여 기술한다. 가변 어휘 단어 인식기를 구현하기 위해서는, 인식 대상이 될 새로운 어휘를 즉시 발음 사전으로 변환시키는 on-line 발음 사전 생성기가 필요하고, 발음 사전 출력을 가지고 각 단어를 모델링할 수 있는 신뢰성 있는 음소 및 변이음 모델이 필요하다. 이와 같은 신뢰성 있는 음소 및 변이음 모델은 생성시키기 위하여 본 연구에서는, 각 음소의 전후 음소들의 음성학적 자질을 고려하여 3 음소열을 집단화(clustering)하여 변이음을 정의하고 이를 당 연구실이 보유하고 있는 POW(Phonetically Optimized Words) 3,848개 단어에 적용하여 1,548개의 변이음 모델을 생성시켰다. 이를 토대로 가변 어휘 단어 인식기를 구현하고 이를 POW 3,848 DB, PBW 445 DB 및 호텔 예약용 244 단어 DB 등에 적용하여 그 성능을 평가하였다. 평가 결과, POW DB에 대해서는 79.6%, PBW DB에 대해서는 445 단어 사전의 경우 79.4%, 100 단어 사전의 경우 88.9%의 성능을 보여 주었고, 호텔 예약 DB에 대해서는 71.4%의 성능을 보여 주었다.

• 대한조선학회논문집
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• 제56권2호
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• pp.168-174
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• 2019

In order to investigate Propeller Open Water (POW) characteristics for the high-speed propeller in Large Cavitation Tunnel (LCT), the high-capacity inclined-shaft dynamometer was designed and manufactured. Its measuring capacities of thrust and torque are ${\pm}2200N$ and ${\pm}120N-m$, respectively. The driving motor is directly connected to the propeller shaft. Inclined angle of the propeller shaft can be adjusted up to ${\pm}10^{\circ}$. As the pressure inside LCT can be adjusted in the range of 0.1~3.0bar, we can carry out the POW test at high Reynolds number (above $1.0{\times}10^6$) without propeller cavitation and the cavitation test in uniform flow. After the new dynamometer setup in LCT, the Reynolds number variation test and propeller open-water test were conducted at the inclined angle of $0^{\circ}$ and $6^{\circ}$. The present POW results of the new dynamometer are compared with those of the existing high-capacity dynamometer in LCT and of the dynamometer in the towing-tank. Through systematic model tests and comparison with their results, the performance of the new inclined-shaft dynamometer was verified. It is thought the POW test for the high-speed propeller should be better conducted at high Reynolds number.

• International Journal of Naval Architecture and Ocean Engineering
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• 제6권2호
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• pp.187-205
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• 2014

The global price of oil, which is both finite and limited in quantity, has been rising steadily because of the increasing requirements for energy in both developing and developed countries. Furthermore, regulations have been strengthened across all industries to address global warming. Many studies of hull resistance, propulsion and operation of ships have been performed to reduce fuel consumption and emissions. This study examined the design parameters of the propeller boss cap fin (PBCF) and hub cap for 6,000TEU container ships to improve the propulsion efficiency. The design parameters of PBCF have been selected based on the geometrical shape. Computational fluid dynamics (CFD) analysis with a propeller open water (POW) test was performed to check the validity of CFD analysis. The design of experiment (DOE) case was selected as a full factorial design, and the experiment was analyzed by POW and CFD analysis. Analysis of variance (ANOVA) was performed to determine the correlation among design parameters. Four design alternatives of PBCF were selected from the DOE. The shape of a propeller hub cap was selected as a divergent shape, and the divergent angle was determined by the DOE. Four design alternatives of PBCF were attached to the divergent hub cap, and the POW was estimated by CFD. As a result, the divergent hub cap with PBCF has a negative effect on the POW, which is induced by an increase in torque coefficient. A POW test and cavitation test were performed with a divergent hub cap with PBCF to verify the CFD result. The POW test result showed that the open water efficiency was increased approximately 2% with a divergent hub cap compared to a normal cap. The POW test result was similar to the CFD result, and the divergent hub cap with the PBCF models showed lower open water efficiency. This was attributed to an increase in the torque coefficient just like the CFD results. A cavitation test was performed using the 2 models selected. The test result showed that the hub vortex is increased downstream of the propeller.

• 동아시아식생활학회지
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• 제22권6호
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• pp.879-885
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• 2012

밀에 대한 느타리버섯 균사체 배양 특성 및 균사체 배양밀가루를 첨가한 제빵 적성에 대하여 조사하였다. 느타리버섯 균사체를 접종하기 위해서는 온수를 이용한 침지가 냉수보다 유용하였으며, 균사체가 배양된 밀은 통밀보다 수분함량이 높은 것으로 나타났으나 일반 성분에는 큰 차이를 보이지 않았다. 이러한 균사체배양 밀가루의 첨가량을 달리하여 식빵을 제조한 결과, 첨가량이 증가할수록 식빵의 무게, 부피 및 반죽의 발효 팽창력은 모두 대조구에 비하여 전체적으로 감소하였다. Crust와 crumb의 색도는 균사체 배양 밀가루 첨가량이 증가함에 따라 전체적으로 감소하였다. 관능 평가결과, 향과 맛 그리고 종합적인 기호도에서 균사체 배양 밀가루 5% 첨가군이 높은 기호도를 나타내어, 균사체 배양 밀가루를 실제 제빵에 이용할 경우 5% 미만이 적절할 것으로 사료된다. 이러한 연구는 기능성 소재를 이용한 제빵 제조에 유용한 정보를 제공하며 또한 균사체 배양 밀가루의 식품소재로의 이용에 도움을 줄 것으로 사료된다.

• 충청수학회지
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• 제20권2호
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• pp.139-146
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• 2007

In this paper, we present characterizations of the power function distribution by the independence of record values. We establish that $X{\in}$ POW(1, ${\nu}$) for ${\nu}$ > 0, if and only if $\frac{X_{L(n)}}{X_{L(n)}-X_{L(n+1)}}$ and $X_{L(n)}$ are independent for $n{\geq}1$. And we prove that $X{\in}$ POW(1, ${\nu}$) for ${\nu}$ > 0; if and only if $\frac{X_{L(n+1)}}{X_{L(n)}-X_{L(n+1)}}$ and $X_{L(n)}$ are independent for $n{\geq}1$. Also we characterize that $X{\in}$ POW(1, ${\nu}$) for ${\nu}$ > 0, if and only if $\frac{X_{L(n)}+X_{L(n+1)}}{X_{L(n)}-X_{L(n+1)}}$ and $X_{L(n)}$ are independent for $n{\geq}1$.