• Journal of Korean Society of Industrial and Systems Engineering
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• v.6 no.9
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• pp.61-65
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• 1983

The contents of this paper can be divided into three parts. First assert is that the attributes of technology determine the characters of the technology transfer and such technology transfer is an unequal exchange. Second, the progresses of the states of development countries and under-development countries made the technology transfer into the technology dependency, that is, from the dependency of consumption to the dependency of Production. Final1y, we analyzed the problems of technology self-reliance and presented the Polices overcoming the technology dependency.

• Annual Conference on Human and Language Technology
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• 2018.10a
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• pp.678-681
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• 2018

Dependency parsing is an important task in natural language processing whose results are used in many downstream tasks such as machine translation, information retrieval, relation extraction, question answering and many others. Most of the dependency parsing literature focuses on using end-to-end and sequence-to-sequence neural architectures as the core of the system. One such system, namely Biaffine dependency parser is explored in the current paper for effective dependency parsing of Korean language.

• Annual Conference on Human and Language Technology
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• 2018.10a
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• pp.334-339
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• 2018

본 논문에서는 기존에 구축되어 있는 구 구조 기반 구문 분석 태그셋을 Universal Dependency 관계 태그 셋으로 변환하는 방안에 대해 논의하였다. 범언어적으로 활용하기 위해 개발된 Universal Dependency의 관계 태그셋을 한국어에 적용할 때에는 범용 POS 태그셋인 UPOS뿐만 아니라 개별 언어의 특성을 반영하고 있는 XPOS를 반드시 참고해야만 한다. 본 연구에서는 Universal Dependency 관계 태그셋을 한국어 구문 분석 태그셋에 대응시키는 과정에서 생기는 문제점들을 '원시 말뭉치 처리 문제'와 '기구축 구문 태그 말뭉치 오류의 문제'로 나누어 지적하고, 이에 대한 해결책을 제시하였다.

• Nuclear Engineering and Technology
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• v.51 no.1
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• pp.45-53
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• 2019

Thermal-hydraulic passive safety systems (PSSs) are incorporated into many advanced reactor designs on the bases of simplicity, economics and inherent safety nature. Several factors among which are the critical parameters (CPs) that influence failure and reliability of thermal-hydraulic (t-h) passive systems are now being explored. For simplicity, it is assumed in most reliability analyses that the CPs are independent whereas in practice this assumption is not always valid. There is need to critically examine the dependency influence of the CPs on reliability of the t-h passive systems at design stage and in operation to guarantee safety/better performance. In this paper, two multivariate analysis methods (covariance and conditional subjective probability density function) were presented and applied to a simple PSS. The methods followed a generalized procedure for evaluating t-h reliability based on dependency consideration. A passively water-cooled steam generator was used to demonstrate the dependency of the identified key CPs using the methods. The results obtained from the methods are in agreement and justified the need to consider the dependency of CPs in t-h reliability. For dependable t-h reliability, it is advisable to adopt all possible CPs and apply suitable multivariate method in dependency consideration of CPs among other factors.

• Proceedings of the Korean Society for Language and Information Conference
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• 1994.02a
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• pp.63-72
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• 1994

Dependency Grammar has been used by Iinguists as the basis of the syntactic components of their grammar formalisms. It has also been used in natural langauge parsing. In China, attempts have been made to use this grammar formalism to parse Chinese sentences using corpus based techniques. This paper reviews the properties of Dependency Grammar as embodied in four axioms for the well-formedness conditions for dependency structures. It is shown that allowing mul tiple governors as done by some followers of this formalism is unnecessary. The practice of augmenting Dependency Grammar with functional labels is discussed in the light of building functional structures when the sentence is parsed. This will also facilitate semantic interpretion.retion.

• Journal of Positioning, Navigation, and Timing
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• v.10 no.4
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• pp.291-296
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• 2021

Recently, the dual-polarized antenna array has drawn attention due to the dependency of its signal processing gain on the signal polarization. Even though this polarization dependency makes it possible to mitigate a non-right-hand circularly polarized (non-RHCP) jamming signal from the same direction as a GPS signal, the dual-polarized antennas are not yet widely used for various applications. This study suggests a method that can acquire the polarization dependency of the signal-processing gain by intentionally misaligning antenna elements in a single-polarized antenna array. The simulation results show that the proposed method can successfully mitigate a non-RHCP jammer from the same direction as a GPS signal as if a dual-polarized antenna array does and provide comparable signal-to-jammer-plus-noise ratio (SJNR) performance with a completely aligned single-polarized antenna array and a dual-polarized antenna array.

• The KIPS Transactions:PartB
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• v.9B no.6
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• pp.791-798
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• 2002

In this thesis. we present a new method for inducing a probabilistic dependency grammar (PDG) from text corpus. As words in Korean are composed of a set of more basic morphemes, there exist various dependency relations in a word. So, if the induction process does not take into account of these in-word dependency relations, the accuracy of the resulting grammar nay be poor. In comparison with previous PDG induction methods. the main difference of the proposed method lies in the fact that the method takes into account in-word dependency relations as well as inter-word dependency relations. To access the performance of the proposed method, we conducted an experiment using a manually-tagged corpus of 25,000 sentences which is complied by Korean Advanced Institute of Science and Technology (KAIST). The grammar induction produced 2,349 dependency rules. The parser with these dependency rules shoved 69.77% accuracy in terms of the number of correct dependency relations relative to the total number dependency relations for best-1 parse trees of sample sentences. The result shows that taking into account in-word dependency relations in the course of grammar induction results in a more accurate dependency grammar.

• Journal of the Korean Operations Research and Management Science Society
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• v.13 no.1
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• pp.51-64
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• 1988

A new approach to the logical design of 4NF database shceme, which can be easily automated, is proposed. The main features of the approach are : introduction of a single attribute right hand side, extension of the concept of independent relations, semantic analysis, and adaoption of dependency matrix. The underlying viewpoints of functional relationships of the approach are different from Fagin's in that we distinguish functional and multivalued dependency in terms of cardinality. An algorithm for automatic generation of fourth normal form is presented and implemented.

• Annual Conference on Human and Language Technology
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• 2018.10a
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• pp.329-333
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• 2018

Universal Dependency 프로젝트는 여러 언어에 공통으로 적용할 수 있는 형태소 패턴과 구문 관계를 찾기 위한 연구를 진행하고 있으며, 점진적으로 많은 언어들이 참여하여 UD 가이드라인에 따라 말뭉치를 구축하고 시스템을 개발하고 있다. 한국어 UD 말뭉치도 구축되어서 공유되고 있지만 구축을 위한 상세한 가이드라인은 제공되지 않고 있다. 본 논문에서는 UD를 기반으로 한국어 구문분석 말뭉치를 구축할 때 논의되어야 할 요소들을 나열하고 예제를 통해서 설명하였다. 본 연구를 기반으로 한국어 구문분석 말뭉치 구축, 구문분석 시스템 개발에서 UD 가이드라인을 적용하는 논의가 시작되기를 기대한다.

• Computers and Concrete
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• v.20 no.1
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• pp.1-10
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• 2017

This paper focuses on the mesh-size dependency in numerical simulations of reinforced concrete (RC) structures subjected to blast loading. A tensile failure criterion that can minimize the mesh-dependency of simulation results is introduced based on the fracture energy theory. In addition, conventional plasticity based damage models for concrete such as the CSC model and the HJC model, which are widely used for blast analyses of concrete structures, are compared with the orthotropic model that adopts the introduced tensile failure criterion in blast tests to verify the proposed criterion. The numerical predictions of the time-displacement relations at the mid-span of RC beams subjected to blast loading are compared with experimental results. The analytical results show that the numerical error according to the change in the finite element mesh size is substantially reduced and the accuracy of the numerical results is improved by applying a unique failure strain value determined by the proposed criterion.