• Annual Conference on Human and Language Technology
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• 2010.10a
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• pp.118-122
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• 2010

격현상은 한국어의 여러 가지 문법현상들을 분석하고 이를 전산학적으로 구현하는데 아주 중요한 부분 중의 하나이다. 결합범주문법(Combinatory Categorial Grammar; CCG)을 이용한 대부분의 기존 연구들에서는 격조사나 보조사들에도 별도의 통사범주들을 할당한 후, 이들 조사들이 명사와 결합하여 하나의 명사구를 구성하는 것으로 조사들을 처리하고 있다. 그러나 이러한 방법들은 이론적인 문제점들뿐만 아니라 전산적 구현에 있어서도 문제점을 안고 있다. 본 논문에서는 이러한 문제점들을 해결하면서도 한국어의 격현상을 효과적으로 구현할 수 있는 방법을 소개한다. 본 논문에서 사용하려고 하는 문법공학 시스템은 한국어를 위한 유형상속 결합범주문법(Type-inherited Combinatory Categorial Grammar; TCCG)이다. 이 시스템 안에서는 명사구의 격조사나 보조사들이 별도의 통사범주들을 할당받지 않고, 명사의 굴절규칙(inflectional rules)에 의하여 명사와 결합하게 된다. 따라서 국어의 기본적인 격조사들을 효율적으로 구현할 수 있을 뿐만 아니라 보조사나 격조사 탈락현상들도 효과적으로 분석하고 구현할 수 있게 된다.

• The Korean Journal of Applied Statistics
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• v.26 no.2
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• pp.223-236
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• 2013

Various statistical classification methods to predict election to the Major League Baseball hall of fame of are implemented and their accuracies are compared. Seventeen independent variables are selected from the data of candidates eligible for the hall of fame and well-known classification methods such as discriminant analysis and logistic regression as well as the recently proposed Mahalanobis-Taguchi system(MTS). The MTS showed a better performance than the others in classification accuracy because it is especially efficient in cases where multivariate data does not constitute directionally geographical groups according to attributes.

• KEPCO Journal on Electric Power and Energy
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• v.7 no.1
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• pp.45-50
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• 2021

우리나라 서해안 및 동해안지역에는 대규모 발전단지가 집중되어 운영 중이며 이 발전단지들의 발전력을 송전하고 있는 765kV 송전선로 2 회선 고장이 발생하는 경우 송전선로의 용량부족으로 인해서 수 GW 규모의 발전력을 불시에 탈락시키도록 보호체계(SPS, Special Protection System)가 운영 중이다. 이 SPS 가 동작하여 대규모 공급능력이 불시에 상실되면 급격한 주파수 하락이 발생하게 되어 저주파수계전기(Under Frequency Relay, UFR)가 동작할 수 있기 때문에 SPS 탈락 발전기의 출력을 상시에 감소시키는 제약비발전(Constraint off)을 시행하고 있다. 이 제약비발전으로 인해 매년 수천억원의 제약비용이 발생하고 있기 때문에 제약을 완화시키기 위한 방안으로 배터리 에너지저장장치(BESS)를 적용하는 사업이 추진되고 있다. 이는 "발전제약완화 에너지저장장치(이하 발전제약완화용 ESS) 사업"으로 불리며 전국 19 개 변전소에 총 1.4GW(2C-Rate)의 에너지저장장치가 설치되는 국내 최대규모의 BESS 사업이다. 향후 송전망 확충에 의해서 발전제약이 해소되는 경우 주파수 조정용, 재생에너지 변동성 완화용 등의 다목적 ESS 로 활용될 계획이다. 본 보고서에서는 발전제약완화 ESS 사업의 기술적 효과를 실효치 기반의 시뮬레이션(PSS/E v33.3)을 통해서 검토하였다.

• Clinical and Experimental Reproductive Medicine
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• v.35 no.2
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• pp.119-129
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• 2008

Objective: The purpose of this study was to quantify decidual $CD56^+$ and $CD16^+$ NK cell subtype population and to evaluate the correlation between decidual NK cell expression and peripheral $CD56^+$ NK cell expression in women with a history of recurrent abortion and increased peripheral NK cells. Methods: Twenty-nine women with recurrent abortion and elevated peripheral $CD56^+$ NK cell percentage who had chromosomally normal conceptus were included in this study. Thirty-two women with recurrent abortion who had chromosomally abnormal conceptus were used as controls. Distribution of $CD56^+$ and $CD16^+$ NK cells in decidual tissues including implantation sites was examined by immunohistochemical staining. The degree of immunohistochemical staining was interpreted by score and percentage. Results: There was a significant difference in decidual $CD56^+$ NK cell score ($43.6{\pm}24.5$ vs. $23.9{\pm}16.3$ P =0.001) and $CD56^+$ NK cell percentage ($42.1{\pm}11.7$ vs. $33.9{\pm}15.8$ P =0.027) between increased peripheral NK cell group and control group. However, there was no statistically significant difference in decidual $CD16^+$ NK cell score ($18.7{\pm}9.5$ vs. $13.2{\pm}39.4$ P =0.108) and $CD16^+$ NK cell percentage ($24.7{\pm}5.9$ vs. $23.4{\pm}11.7$ P =0.599). There was no significant correlation between decidual NK cell score and peripheral NK cell percentage in increase peripheral NK cell group (peripheral $CD56^+$ NK cell percentage vs. decidual $CD56^+$ NK cell score, r=-0.016, P =0.932, peripheral $CD16^+$ NK cell percentage vs. decidual $CD16^+$ NK cell score, r=0.008, P =0.968). Conclusion: This study shows that $CD56^+$ decidual NK cells are increased in decidua of women exhibiting a history of recurrent abortion with increased $CD56^+$ peripheral NK cell. There was no significant correlation between decidual and peripheral NK cell increment in increase peripheral NK cell group. This study suggests the possibility that decidual NK cells may play an important role in the immune mechanism of recurrent abortion.

• The Journal of Korean Association of Computer Education
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• v.7 no.6
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• pp.117-128
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• 2004

Compared with traditional face-to-face instruction, online learning causes learners to experience more severe feeling of isolation and results in higher dropout rate. This is due to the lack of interaction, sense of belonging, membership, interdependency, cooperation among members and social environment that enables persistence in online learning. Therefore, it is very important for grouping e-learning community to lower the dropout rate and eliminate feeling of isolation. In this paper, the research has been done on the inclination test list to be applied for grouping the desirable learning community. And on the basis of this research, the grouping system for e-learning community(GSE) based on intelligent multi agents for an inclination test using homogeneous and heterogeneous items has been developed. GSE system has such properties that construct a personalized user profile by an agent, and then make groupings according to users' inclination. When this system was evaluated, about 88% of learners were satisfied, and they wanted the group not to be disorganized but to be maintained.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.4A
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• pp.245-253
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• 2012

In the longway tunnel and underground traffic road, the structure of transverse ventilation system is constructed by the airpit slab. In this study, the full scale specimens of the PSC airpit slab that attached fire resistance panel are performed the static and dynamic loading tests for evaluation of bending capacity. The first of all, it confirmed the evaluations about the fundamental efficiency of the fire resistance panel and PSC slab by the 3-point bending test and pull-off test. The tests are performed for evaluation of the bending resistance under ultimate static load and the bonded capacity under dynamic fatigue load. A fatigue test is performed for an investigation of the effect on wind pressure that is developed by transit of traffic. The damage or debonding on surface between fire resistance panel and PSC slab was not developed in dynamic fatigue load test, also the behavior of the specimens is very stable and the debonding of the fire resistance panel attached at the bottom surface of PSC slab was not developed in static load test, too. Therefore, the crack or debonding of the fire resistance panel will be not developed by external loads during the construction or completion of the precast fire resistance system.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.3
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• pp.239-247
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• 1990

In order to investigate the degree of grain shedding of red rices collected in Korea, breaking tensile and breaking bending strengths of 269 varieties; 82 Korean and 100 foreign red rices and 87 Korean cultivars including 26 native varieties, 30 Japonica-Indica hybrids and 31 Japonica type varieties, were measured at harvest time. Also, histological characteristics of abscission region between spikelet and pedicel were observed. The breaking tensile and breaking bending strengths of both Korean and foreign red rices were weaker than those of Japonica-Indica hybrids which were known as easily shedding varieties in Korea. Abscission layers were observed in the majority of Korean red rices except for 5 varieties, and those of all varieties belonging to both long grain types and 'Sare's were cracked completely at harvest time, while those of round grain types were not cracked except one variety. The breaking tensile and breaking bending strengths of the tested varieties having cracked abscission layer were weaker than those of non-cracked ones. Both strengths of breaking tensile and breaking bending were positively correlated with diameter of supporting zone and thickness of sclerenchyma tissue surrounding central vascular tissue of suporting zone at 0.1% significant level, respectively.

• Journal of fish pathology
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• v.7 no.1
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• pp.47-51
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• 1994

The number of maximum 63 Caligus curtus was counted culturing P. olivaceus body surface of 20cm mean body length. respectively. Parasite sites were consist of 63.4% head, 26.9% caudal peduncle, 8.3% operculum and 1.4% the other sites. Also, the sites were secreted in larage quantity of mucus with a very small bleeding. This Caligus parasite was died 15 min to 5ppm and 5min to 10ppm masoten but 28.57% was exterminated to fresh water during the four hours. On the other hand, these Caligus parasites were not exterminated during the 30 min to 200ppm formalin.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.433-434
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• 2007

제주계통은 육지에 비해 상대적으로 작은 계통 규모(300$\sim$600MW)를 갖고 있지만, HVDC 연계선에 의한 의존도가 30$\sim$50%로 매우 높다. 또한, 계통에 비해 그 규모가 큰 100 MW 발전기 2대가 현재 새로 운영 중에 있는 등, 주파수 안정도 측면에서 많은 부분이 고려되어야한다. 2006년 4월 1일 제주도 정전 사고도 주파수 안정도 문제에 기인하고 있고, 이는 HVDC 연계선 탈락 시 독립된 계통으로서의 주파수 안정도 부분에 대한 연구가 필요함을 보여준다. 2006년 4월 1일 이후, 제주도의 전력 계통은 발전설비 증대와 예비력 확보, 부하차단 방식변화 등으로 안정적인 계통 운영을 위해 전반적인 변화를 주었다. 하지만, 지난 대규모 정전사고에서 알 수 있듯이, HVDC 연계선에 의한 의존도가 최대 50%로 높은 제주계통의 특성상, HVCD 연계선이 탈락된 이후, 독립계통으로서의 안정적인 운영을 위한 노력이 필요하다.

• Journal of Applied Reliability
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• v.6 no.3
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• pp.225-237
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• 2006

This paper proposes a method of modelling the informative dropouts with QoL(quality of life) in survival analysis. QoL is the index to measure the health related quality of life of a patient who got some treatments for a disease. Dropouts are prevalent occurrences on longitudinal study They are commonly dependent to the QoL of patients, that is, severe disease or death and called informative dropouts. Modelling the mechanism of dropouts could achieve the more accurate inference for survival analysis. A likelihood method is proposed to estimate the survival parameter and test the patterns of dropouts.