• 정보교육학회논문지
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• 제9권3호
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• pp.387-396
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• 2005

본 연구에서는 온라인 게임인 '리니지'의 초등학생 게이머들을 대상으로 온라인 게임 라이프스타일과 교우관계에 어떤 연관성이 있는지 살펴보고자 한다. 리니지 게임을 하는 집단과 하지 않는 집단이 온라인 공간에서 보이는 행동방식과 교우관계를 비교한 결과, 온라인 게임집단은 일반집단보다 교우관계에서 사교성, 자기주장, 규범준수, 성취욕이 전반적으로 낮았다. 그러나 같은 온라인 게임을 할지라도 게임의 행동방식은 일탈적, 차별주의적, 개인주의적, 공동체적 게이머라는 네 유형으로 분류되었으며, 차별주의적 일탈적 게이머는 사교성이 나머지에 비해 높았고, 자기주장성은 차별주의적 게이머에게서 가장 높았다. 이러한 결과를 통해 게임 이용 여부 자체보다 그 게임 속에서 보여주는 행동방식이 게이머의 교우관계의 차이를 보여주는데 유의미한 기준임이 확인되어, 리니지와 같은 온라인 게임에 대한 자녀생활지도 참고자료로 활용될 수 있을 것이다.

• 한국콘텐츠학회논문지
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• 제17권8호
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• pp.130-143
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• 2017

본 연구는 'B'지역노조라는 현대 일본의 '계급지향적' 노동운동을 검토하기 위해, 우선 그 이론적 틀을 모색하는 작업이다. 현재 일본에서 '계급지향적'인 노동운동은 주변에서 '잔여적인' 노동운동으로 설정되지만, 그럼에도 그 활동은 활발히 계속되고 있다. 이에 본 연구에서 그 '계급지향적' 노동운동을 분석하기 위한 이론적 틀을 살펴보았다. 먼저 윌리엄즈에 의한 개념의 변화를 검토하고, 마르크스주의의 계급 계급의식 개념과 '언어적 전회'의 새로운 주체 개념 등을 살펴보았다. 그리고 본 연구에서는 'B'지역노조의 사례에 맞게 '감정구조' 개념을 재해석하였다. 이와 같은 과정을 거쳐 본 연구에서는 'B'지역노조의 '집단적 노동자'와 '개인화된 노동자', '노동자'와 '비노동자'가 물질적 공간 혹은 비물질적 공간에서 집단화를 이룬다고 보았고, 그 '감정구조'는 '''계급지향성''을 둘러싼 모순과 절충'이라고 정리하였다. 그리고 마지막으로 본 연구에서는 그에 대한 '감정구조'의 모형을 제시했다.

• 한국콘텐츠학회논문지
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• 제9권8호
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• pp.147-157
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• 2009

최근 객체지향 개발 방법론을 적용하는 소프트웨어 개발 프로젝트에서 개발 노력 추정 기법으로 사용사례점수(Use Case Point, UCP)에 대한 연구가 계속되고 있다. 기존의 연구는 기술적 요인과 환경적 요인을 적용한 AUCP(Adjusted Use Case Point)에 상수를 곱하여 개발 노력을 추정하는 선형모델을 제안하고 있다. 그러나 소프트웨어 규모가 증가하면 개발기간은 기하급수적으로 증가함으로서 비선형 회귀모델이 적합하다는 사실과 UCP 계산과정에서 TCF(Technical Complexity Factor)와 EF(Environmental Factor)를 적용함에 따른 FP(Function Point) 오차가 발생함으로서 AUCP로 규모를 추정하는 것은 비현실적이다. 이 논문은 사용사례점수 기반의 기존 연구의 문제점을 제시하고, 기존 연구의 문제점인 TCF와 EF를 고려하지 않고 직접 UUCP로 부터 개발 노력을 추정할 수 있는 모델(선형, 로그형, 다항식, 거듭제곱, 지수형)을 도출하고 평가한다. 그 결과, 기존의 선행 모델보다 비선형모델인 지수형 모델이 우수한 결과를 보였다. 따라서 개발될 소프트웨어 시스템의 UUCP를 계산한 후 제안된 모델을 이용하여 개발 노력을 추정함으로서 개발에 소요되는 직접비용 산정이 가능하다.

• Journal of Information Processing Systems
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• 제10권2호
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• pp.314-333
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• 2014

When analyzing default predictions in real estate companies, the number of non-defaulted cases always greatly exceeds the defaulted ones, which creates the two-class imbalance problem. This lowers the ability of prediction models to distinguish the default sample. In order to avoid this sample selection bias and to improve the prediction model, this paper applies a minority sample generation approach to create new minority samples. The logistic regression, support vector machine (SVM) classification, and neural network (NN) classification use an imbalanced dataset. They were used as benchmarks with a single prediction model that used a balanced dataset corrected by the minority samples generation approach. Instead of using prediction-oriented tests and the overall accuracy, the true positive rate (TPR), the true negative rate (TNR), G-mean, and F-score are used to measure the performance of default prediction models for imbalanced dataset. In this paper, we describe an empirical experiment that used a sampling of 14 default and 315 non-default listed real estate companies in China and report that most results using single prediction models with a balanced dataset generated better results than an imbalanced dataset.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권10호
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• pp.3230-3255
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• 2022

Causality mining in NLP is a significant area of interest, which benefits in many daily life applications, including decision making, business risk management, question answering, future event prediction, scenario generation, and information retrieval. Mining those causalities was a challenging and open problem for the prior non-statistical and statistical techniques using web sources that required hand-crafted linguistics patterns for feature engineering, which were subject to domain knowledge and required much human effort. Those studies overlooked implicit, ambiguous, and heterogeneous causality and focused on explicit causality mining. In contrast to statistical and non-statistical approaches, we present Bidirectional Encoder Representations from Transformers (BERT) integrated with Multi-level Feature Networks (MFN) for causality recognition, called BERT+MFN for causality recognition in noisy and informal web datasets without human-designed features. In our model, MFN consists of a three-column knowledge-oriented network (TC-KN), bi-LSTM, and Relation Network (RN) that mine causality information at the segment level. BERT captures semantic features at the word level. We perform experiments on Alternative Lexicalization (AltLexes) datasets. The experimental outcomes show that our model outperforms baseline causality and text mining techniques.

• 디지털융복합연구
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• 제6권2호
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• pp.13-21
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• 2008

The e-Government in Korea has made such good results as improvement of official work productivity and citizen service quality. However, e-Government in Korea involves many problems and subjects to must solve, especially, at the side of citizen services. Every public organization as supplier provides each service of themselves to the civilians. Citizens feel inconvenience yet, because they must visit and are supplied various civil services to one public affair from several public institutions. When we consider the paradigm shift of the e-Government service, the status and problems of the e-Government in Korea required more better service model to the citizen. To realize the citizen oriented service, the integration and linkage of the system infrastructure and applications among governmental organizations are required. In this changed situation, when new one/non-stop service model of the digital government is developed and launched, the e-Government can supply better service to the citizens. In this study, the model that we suggest is among the new service models of the e-Government, named the Integrated Civil Service Model. The e-Government involving the Integrated Civil Service Model can make more outcome, such as better civil life convenience, cost-effective results by processing time and cost reduction for public affairs of citizens.

• 방사선산업학회지
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• 제7권2_3호
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• pp.209-219
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• 2013

RI-Biomics field comes into the limelight as a new fusion radiation technology. These rapid development of RI-Biomics cause the necessity of establishment of a new methodical education program model for consistent training of professional manpower in RI-ADME, Biomics field. But domestic current status is not satisfied to training human resource development in RI-Biomics. Actually domestic educational organization related to RI-Biomics just run educational programs oriented basic theory, so practical and fusion education are not existed nowadays for preliminary RI-Biomics expert. Therefore we established a new education program model for educate of the expert in RI-Biomics field to overcome current problem about the route of knowledge that has more monotonous and concentrated tendency and non-professional education. To improve universality and practicality, we conduct education-training model survey about domestic and foreign country. This new human resource development model will contribute to fostering new expert in RI-Biomics field.

• Computers and Concrete
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• 제5권4호
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• pp.401-416
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• 2008

The paper presents a methodology to model three-dimensional reinforced concrete members by means of embedded discontinuity elements based on the Continuum Strong Discontinuous Approach (CSDA). Mixture theory concepts are used to model reinforced concrete as a 3D composite material constituted of concrete with long fibers (rebars) bundles oriented in different directions embedded in it. The effects of the rebars are modeled by phenomenological constitutive models devised to reproduce the axial non-linear behavior, as well as the bond-slip and dowel action. The paper presents the constitutive models assumed for the components and the compatibility conditions chosen to constitute the composite. Numerical analyses of existing experimental reinforced concrete members are presented, illustrating the applicability of the proposed methodology.

• Ocean Systems Engineering
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• 제8권3호
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• pp.329-343
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• 2018

The inclination of seabed profile (sloped seabed) is one of the known topographic features which can be observed at different seabed level in the large offshore basin. A mooring system connected between the platform and global seabed is an integral part of the floating structure which tries to keep the floating platform settled in its own position against hostile sea environment. This paper deals with an investigation of the motion responses of an FPSO platform moored on the sloped seabed under the combined action of wave, wind and current loads. A three-dimensional panel discretization method has been used to model the floating body. To introduce the connection of multi-segmented non-linear elastic catenary mooring cables with the sloped seabed, a quasi-static composite catenary model is employed. The model and analysis have been completed by using hydrodynamic diffraction code AQWA. Validation of the numerical model has been successfully carried out with an experimental work published in the latest literature. The analysis procedure in this study has been followed time domain analysis. The study involves an objective oriented investigation on platform motions, in order to identify the effects of the slopped seabed, the action of the wave, wind and current loads and the presence of riser system. In the end, an effective analysis has been performed to identify a stable mooring model in demand of reducing structural responses of the FPSO.

• 한국멀티미디어학회논문지
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• 제22권2호
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• pp.292-298
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• 2019

Mobile-based software development methodology has been vigorously researched from using object-oriented development methodology and component-based development methodology previous structural developing methodology. There are two types of OS in mobile platform which are android and iOS. There is a problem that the application to be developed is developed depending on the device type. To resolve this problem, first, the system structure and design method should be managed effectively. Second, a basic design guide that can be commonly adapted to the each project is required. In this paper, we define a mobile cross platform meta model based on MDA-development methodology, focusing on reusability, portability and interoperability about non - dependent part of the mobile platform. If the proposed meta-model is applied to manage the related information and all the types of Mobile-Apps become available through independent mobile app development process, henceforward, it will be much of help establishing formulaic mobile-app developmental methodology.