• Annual Conference on Human and Language Technology
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• 2019.10a
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• pp.133-138
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• 2019

의존 구문 분석은 문장 구성 요소의 위치에 제약이 적고 생략에도 유연하게 대처할 수 있어 한국어 구문 분석에 적합하다. 하지만 의존 구문 분석을 수행할 때 지배소를 결정해야 할 노드 수가 많으면 계산의 복잡도가 올라가고, 각 노드의 지배소를 결정할 때 방향성 문제가 있어 구문 분석에 모호함을 더한다. 이때 지배소 후위 원칙을 엄격하게 적용할 경우 구문적 중심어와 의미적 중심어가 불일치하는 문제가 발생한다. 이러한 문제들을 해소하기 위해 구묶음을 수행한 문장으로 구문 분석을 수행할 수 있다. 따라서, 본 논문에서는 기존의 의존 구문 말뭉치를 말덩이 기반의 의존 구문 말뭉치로 변환하는 알고리즘을 기술하고, 이에 따라 구축한 말뭉치와 기존의 말뭉치를 정량적으로 비교한다.

• The Korean Journal of Financial Management
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• v.26 no.2
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• pp.33-61
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• 2009

From the perspective of corporate governance, we examine the acquirers' performance of mergers and acquisitions in KOSDAQ Market. The empirical results of our study show that inside an executive shareholders and outside minor shareholders, affect acquirers' performance in M&A's : the ownership of outside minor shareholders is positively correlated with the performance of acquirers. and, the ownership of insiders, such as that of an executive shareholders, does have significant effect on the performance of M&A's. Since the current literature concludes that the improvement of corporate governance in KOSDAQ Market would enhance the shareholders' wealth, the results of our study implies that outside minor investors, as well as insiders, are playing an important role in the corporate governance.

• The Journal of Society for e-Business Studies
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• v.25 no.4
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• pp.155-168
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• 2020

Although many studies have been conducted on the impact of increasing social awareness of corporate social responsibility activities on financial and non-financial performances, the number of studies conducted by financial companies is relatively small compared to those conducted by non-financial companies such as manufacturing and service industries. Accordingly, this study explores the impact of corporate social responsibility activities on the Earnings Persistence of financial companies through a regression analysis that utilizes the conversion score of an ESG rating of a Korean listed company provided by the Korea Corporate Governance Service (KCGS) as a variable for the company's social responsibility activities. Through this analysis, the study found that, among the ESG scores that are variables of social responsibility activities, the ESG governance score was significant in the direction of (+) for the Earnings Persistence. In addition, the same study conducted by classifying the entire sample into six sub-industries shows that the ESG governance score in the banking industry was more significant compared to when the regression analysis was conducted on the entirety of the samples. Therefore, this study concludes that the soundness and reliability of corporate governance have a positive effect on Corporate Earnings Persistence.

• Journal of Life Science
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• v.21 no.1
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• pp.102-109
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• 2011

The genioglossus muscle plays an important role in maintaining upper airway patency during inspiration; if this muscle does not contract normally, breathing disorders occur due to closing of the upper airway. These occur because of disorders of synaptic input to the genioglossus motoneurons, however, little is known about it. In this study, the distribution of GABA-, glycine-, and glutamate-like immunoreactivity in axon terminals on dendrites of the rat genioglossus motoneurons, stained intracellularly with horseradish peroxidase (HRP), was examined by using postembedding immunogold histochemistry in serial ultrathin sections. The motoneurons were divided into four compartments: the soma, and primary (Pd), intermediate (Id), and distal dendrites (Dd). Quantitative analysis of 157, 188, 181, and 96 boutons synapsing on 3 soma, 14 Pd, 35 Id, and 28 Dd, respectively, was performed. 71.9% of the total number of studied boutons had immunoreactivity for at least one of the three amino acids. 32.8% of the total number of studied boutons were immunopositive for GABA and/or glycine and 39.1% for glutamate. Among the former, 14.2% showed glycine immunoreactivity only and 13.3% were immunoreactive to both glycine and GABA. The remainder (5.3%) showed immunoreactivity for GABA only. Most boutons immunoreactive to inhibitory amino acids contained a mixture of flattened, oval, and round synaptic vesicles. Most boutons immunoreactive to excitatory amino acids contained clear and spherical synaptic vesicles with a few dense-cored vesicles. When comparisons of the inhibitory and excitatory boutons were made between the soma and three dendritic segments, the proportion of the inhibitory to the excitatory boutons was high in the Dd (23.9% vs. 43.8%) but somewhat low in the soma (35.7% vs. 38.2%), Pd (34.6% vs. 37.8%) and Id (33.1% vs. 38.7%). The percentage of synaptic covering of the inhibitory synaptic boutons decreased in the order of soma, Pd, Id, and Dd, but this trend was not applicable to the excitatory boutons. The present study provides possible evidence that the spatial distribution patterns of inhibitory and excitatory synapses are different in the soma and dendritic tree of the rat genioglussus motoneurons.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.1
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• pp.122-128
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• 2014

The purpose of this study was to identify the influence of youth group activities experience to sociality development of middle school student. To achieve above study purpose, the subject of this study was selected 280 from middle school second-grade students(youth group activities participants 140, non-participants 140). Experience based activities were applied to the experimental group over 80 hours per year and the pre-post test was conducted using the sociality development inventory. The results of the data were analyzed by t-test using the SPSS(ver 18.0) program. The results were as follows: First, In the aspect of sociality development by youth group activities, the student participant showed somewhat significant differences compared to the non-participants. Second, considering the activity periods, the students with more than two-year experiences showed higher results than the ones with just one-year experiences. These results represent that various programs, which can develop the sociality, can be provided for youth when they join any group of activities in general and those programs are also very effective in developing the sociality of juveniles. Furthermore, It is suggested that youth group activities are a necessary element at the school education fields, which can solve the various problems caused by overemphasizing only the knowledge transfer, reinforced education of humanism and reduced school violence.

• Proceedings of the Korean Nuclear Society Conference
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• 1998.05a
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• pp.469-474
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• 1998

이상 유동 지배 방정식에 두 상의 경계면 두께 개념을 도입하여 액체 내부에서의 기포 거동에 대한 동적 안정성을 이론적으로 해석하였다. 현재까지 기포의 안정성은 실험과 거시적인 물리적 이론에 의하여만 정적으로 연구되어 왔으나, 상간의 압력 불연속성을 표면장력 모델링을 이용하여 해석적으로 해결 함으로서 기포 안정성에 대한 정량적인 분석을 가능하게 하였다. 그 결과 기포의 안정성은 기존의 무차윈 Weber수 이외에 Reynolds수 그리고 유체의 점성력과 Capillary파와 관련된 무차원 수에 의해서도 영향을 받는 것으로 밝혀졌다.

• The Journal of the Korea Contents Association
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• v.15 no.4
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• pp.443-453
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• 2015

The purpose of this research is to investigate the influence of institution trust on customer-orientation of hotel practician. Comparison between two types of governance structure demonstrated that the relationship between institution trust and customer-orientation were significantly different each other. As hypothesized, influence of organization trust on customer-orientation was much stronger in privately owned organizations than that of public ownership organizations. In the test of mediating effect of job engagement between two variables were statistically significant Based on the results from SEM model, we can suggest that improvement of institution trust need to be emphasized through the rational introduction of customer-oriented system, establishing priority task system according to individual business criticality, admission and enhance of fault. Empirical evidences from structural equation model support the governance type positively influence the job attitude in service organizations.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.6
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• pp.1142-1147
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• 2015

As a method to increase the scalability and efficiency of wireless sensor networks, a scheme to construct networks hierarchically has received considerable attention among researchers. Researches on the methods to construct wireless networks hierarchically have been conducted focusing on how to select nodes such that they constitute a backbone network of wireless network. Nodes comprising the backbone network should be connected themselves and can cover other remaining nodes. A problem to find the minimum number of nodes which satisfy these conditions is known as the minimum connected dominating set (MCDS) problem. The MCDS problem is NP-hard, therefore there is no efficient algorithm which guarantee the optimal solutions for this problem at present. In this paper, we propose a novel multi-start local search algorithm to solve the MCDS problem efficiently. For the performance evaluation of the proposed method, we conduct extensive experiments and report the results.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.345-345
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• 2011

최근 각종 하천 개발 사업이 활발히 진행되면서 하천환경변화에 따라 발생 가능한 다양한 현상 예측 및 그에 대한 대책수립이 요구되는 실정이다. 특히 하도안정 및 평면적 유로를 유지하기 위해서는 수제와 같은 수공 구조물이 효과적인 것으로 알려져 있다. 그러나 국내에서는 제한적인 연구와 소수의 수제 설치만 진행되었을 뿐 실용화를 위한 기술 개발 연구는 미흡한 실정이다. 단일 수제의 기하학적 특성에 의한 세굴 및 퇴적 등 하상의 변화에 관한 연구는 다수 진행되었으나 연속 수제에 대한 연구는 거의 없는 실정이다. 따라서 본 연구에서는 이동상 수리실험을 통하여 단일수제와 연속수제 설치에 따른 세굴깊이와 길이, 폭 등 하상변화의 기하학적 형상을 지배하는 월류비와 후루이드 수 등 수제설계 지배인자에 대한 특성을 검토하였다. 단일수제와 연속수제에 대하여 월류조건과 비월류조건의 경우로 분류하여 후루이드 수의 영향을 검토하였다. 실험분석 결과 후루이드 수와 월류비가 수제 설치에 따른 세굴 깊이, 세굴 길이 및 세굴 폭의 지배인자임을 확인하였다. 후루이드 수가 증가할수록 세굴깊이와 길이, 폭은 증가하는 것으로 나타났으나 월류비가 증가할수록 세굴깊이와 길이, 폭은 감소하는 것으로 나타났다. 연속수제의 경우 첫 번째 수제 주변의 하상변화는 단일수제와 그 규모가 유사한 것으로 나타났으나 두 번째 또는 세 번째 수제부터의 하상변화 규모는 첫 번째 수제에 비해 작아지는 것으로 나타났다. 또한 세번째 수제 이후 모든 수제에서의 하상변화 규모는 거의 일정한 것으로 확인되었다. 본 연구에서 제시한 하상변화 지배인자와 단일수제, 연속수제 별 세굴공의 기하학적 특성과의 관계는 하상의 안정성 확보를 위한 수제 설계를 위한 기초자료로 활용될 수 있을 것으로 기대된다.

• Journal of Korean Society of Steel Construction
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• v.22 no.3
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• pp.241-251
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• 2010

This paper presents the development of a new analytical solution to the governing differential equation for isotropic annular sector plates subjected to uniform loading in a three-dimensional polar coordinate system. The 4th order governing partial differential equation (PDE) was converted to an ordinary differential equation (ODE) by assuming the Levy-type series solution form and the subsequent mathematical operations. Finally, a series-type solution was assembled with homogeneous and nonhomogeneous solution parts after operating real values and complex conjugates derived from the characteristic equation. To demonstrate the convergence rate and the accuracy of the featured method, several examples with various sector angles were selected and solved. The deflections and internal moments in the example annular sector plates that were obtained from the proposed solution were compared with those obtained from other analytical studies and numerical analyses using the finite element analysis package program, ABAQUS. Very good agreement with the results of other analytical and numerical methodologies was shown.