• 한국문헌정보학회지
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• 제45권4호
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• pp.179-207
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• 2011

본 연구에서는 도서관장애인서비스 활성화 방안 및 홍보전략 개발의 기초가 될 수 있는 이용자인식조사 연구를 수행하고자 하며, 이를 통해서 이용자에게 가장 적절한 홍보방안을 도출하는데 기여하고자 설문조사 연구를 수행하였다. 연구결과 첫째, 국내 장애인이용자의 도서관서비스에 대한 홍보경험은 32.4%로 매우 낮게 나타났으며, 특히 지적장애인의 경우 전원이 홍보경험이 없는 것으로 조사되었다. 둘째, 도서관 홍보매체 경험으로는 인터넷, 도서관게시판, 현수막, ARS 서비스, 인터넷 방송 순으로 나타났으나, 홍보물에 대한 만족도는 평균 이하(3점 이하)로 나타났다. 반면에 홍보물에 대한 관심도는 매우 높게 나타났다. 셋째, 장애인이용자가 가장 많이 이용하는 도서관홈페이지는 학교도서관, 국립중앙도서관, 공공도서관 순으로 나타났으나, 서비스 이용률은 매우 낮게 나타났고, 경험한 자의 만족도도 매우 낮은 것으로 분석되었다. 넷째, 도서관 이용에 있어 장애인이용자가 가장 필요로 하는 것은 장애를 극복할 수 있는 편의시설의 확보 및 제공임을 알 수 있다. 이에 본 연구는 장애인을 위해 도서관에 도달하는 것의 편의성, 도서관에 도착해서 이용하는 시설의 편의성, 자료의 이용 용이성 등을 개선할 것을 제안한다.

• 사회복지연구
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• 제42권3호
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• pp.329-353
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• 2011

청소년기는 가족관계를 통해 1차적 사회관계를 경험하는 시기이기 때문에 청소년의 가족관계는 매우 중요하다. 특히 사회복지서비스를 제공받고 있는 조손가족 청소년은 일반 청소년에 비해 부정적인 가족관계로 인한 심리·사회적 문제를 일으키는 경우가 많아 그들의 가족관계를 완화하여 다시 회복할 수 있는 적응유연성이 필요하다. 본 연구에서는 조손가족 청소년의 가족관계가 적응유연성에 미치는 영향에 있어 자아존중감, 공감, 내·외통제감을 매개변수로 설정하였고, 그들 간의 경로를 파악하여 전체적인 측면에서의 통합적인 인과성을 밝히고자 하였다. 이를 위해 전국 단위의 조손가족 청소년 492명을 대상으로 Amos 19.0 프로그램을 이용하여 상관관계 및 경로분석을 실시하였고, 모형의 유의성 및 경로 간의 직·간접효과의 통계적 유의성을 검증하였다. 분석 결과, 조손가족 청소년의 가족관계는 적응유연성에 직접적인 영향을 미쳤고, 자아존중감, 공감이라는 매개기능을 통해서 간접적인 영향력이 상대적으로 높아짐을 확인할 수 있었다. 이를 통해 조손가족 청소년의 가족관계에 있어 자아존중감, 공감, 내·외통제감에 초점을 맞춘 사회복지프로그램 개발과 활용이 사회복지실천적 접근과제임을 제안하였다.

• Journal of applied mathematics & informatics
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• 제41권2호
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• pp.439-448
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• 2023

We introduce several higher-order (p, q)-differential equation of which are related to (p, q)-Bernoulli polynomials. We also find some relations between (p, q)-Bernoulli, (p, q)-Euler, and (p, q)-Genocchi polynomials.

• Journal of applied mathematics & informatics
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• 제41권5호
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• pp.1047-1056
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• 2023

This article studies some moments characteristics of generalized order statistics for transmuted power hazard distribution. It unifies the earlier results considered by several authors. The characterization results are also outlined at the end.

• Journal of Information Processing Systems
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• 제2권2호
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• pp.67-75
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• 2006

In order to acquire a precise and quick response to an analytical query, proper selection of the views to materialize in the data warehouse is crucial. In traditional view selection algorithms, all relations are considered for selection as materialized views. However, materializing all relations rather than a part results in much worse performance in terms of time and space costs. Therefore, we present an improved algorithm for selection of views to materialize using the clustering method to overcome the problem resulting from conventional view selection algorithms. In the presented algorithm, ASVMRT (Algorithm for Selection of Views to Materialize using Reduced Table), we first generate reduced tables in the data warehouse using clustering based on attribute-values density, and then we consider the combination of reduced tables as materialized views instead of a combination of the original base relations. For the justification of the proposed algorithm, we reveal the experimental results in which both time and space costs are approximately 1.8 times better than conventional algorithms.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 춘계학술대회논문집
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• pp.1729-1734
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• 2000

Complex dispersion relations in a cylindrical, foam-lined duct were successfully identified by using an iterative Prony series method. Techniques for using the iterative procedure successfully are described in detail, particularly with regard to model order selection and the identification of parameter starting values. It is shown that modal wave speeds and spatial attenuations per wavelength can be derived from the complex dispersion relations obtained using the iterative procedure. In addition, a finite element simulation is shown to well represent corresponding experimental measurement in terms of modal wave speeds and spatial attenuations.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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• pp.264-265
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• 2017

This paper aims to analyze relations between design errors prevented by building information modeling (BIM)-based design validation and their impacts in order to identify critical consideration factors for successfully implementing BIM-based design validation in the architecture, engineering, and construction (AEC) projects. More than 800 design errors detected by BIM-based design validation in two BIM-based projects in South Korea are categorized according to its causes and work types. The relations between causes and work types of design errors and project delay, cost overrun, low quality, and rework generation that can be caused by the errors are analyzed through conducting logistic regression. Characteristics of each design error are analyzed by conducting face-to-face interviews with practitioners in the two BIM-based projects. As the results, the impacts of design error causes on predicting project delay, cost overrun, low quality, and rework generation were the highest.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2001년도 춘계정기학술대회
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• pp.377-381
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• 2001

An ATMS(Assumption-based Truth Maintenance System) has been widely used for maintaining the truth of information by detecting and solving contradictions in nile-based systems. But the ATMS can not correctly maintain the truth of the information in case that the generated information is satisfied within a time interval or includes data about temporal relations of events in time varying situations, because it has no mechanism manipulating temporal data. In this paper, The extended ATMS method is proposed, which can maintain the truth of the information in the inference system using information changing over time or temporal relations of events. In order to maintain contexts generated by relations of events, the label representation method is modified, the disjunction, conjunction simplification method in the label-propagation procedure and nogood handling method of the conventional ATMS are modified, too.

• 호남수학학술지
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• 제45권3호
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• pp.471-490
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• 2023

In this present paper, we study QSM-connection (quarter-symmetric metric connection) on Sasakian statistical manifolds. Firstly, we express the relation between the QSM-connection ${\tilde{\nabla}}$ and the torsion-free connection ∇ and obtain the relation between the curvature tensors ${\tilde{R}}$ of ${\tilde{\nabla}}$ and R of ∇. After then we obtain these relations for ${\tilde{\nabla}}$ and the dual connection ∇^* of ∇. Also, we give the relations between the curvature tensor ${\tilde{R}}$ of QSM-connection ${\tilde{\nabla}}$ and the curvature tensors R and R^* of the connections ∇ and ∇^* on Sasakian statistical manifolds. We obtain the relations between the Ricci tensor of QSM-connection ${\tilde{\nabla}}$ and the Ricci tensors of the connections ∇ and ∇^*. After these, we construct an example of a 3-dimensional Sasakian manifold admitting the QSM-connection in order to verify our results. Finally, we study the submanifolds with the induced connection with respect to QSM-connection of statistical manifolds.

• Advances in nano research
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• 제15권2호
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• pp.141-153
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• 2023

The main objective of this paper is to develop the finite element study on the nonlinear free vibration of functionally graded nanocomposite spherical shells reinforced with graphene platelets under the first-order shear deformation shell theory and von Kármán nonlinear kinematic relations. The governing equations are presented by introducing the full asymmetric nonlinear strain-displacement relations followed by the constitutive relations and energy functional. The extended Halpin-Tsai model is utilized to specify the overall Young's modulus of the nanocomposite. Then, the finite element formulation is derived and the quadrilateral 8-node shell element is implemented for finite element discretization. The nonlinear sets of dynamic equations are solved by the use of the harmonic balance technique and iterative method to find the nonlinear frequency response. Several numerical examples are represented to highlight the impact of involved factors on the large-amplitude vibration responses of nanocomposite spherical shells. One of the main findings is that for some geometrical and material parameters, the fundamental vibrational mode shape is asymmetric and the axisymmetric formulation cannot be appropriately employed to model the nonlinear dynamic behavior of nanocomposite spherical shells.