• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2006년도 정기 학술대회 논문집
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• pp.373-380
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• 2006

Accurate and fast haptic simulations of deformable objects are desired in many applications such as medical virtual reality. In haptic interactions with a coarse model, the number of nodes near the haptic interaction region is too few to generate detailed deformation. Thus, local refinement techniques need to be developed. Many approaches have employed purely geometric subdivision schemes, but they are not proper in describing the deformation behavior of deformable objects. This paper presents a continuum mechanics-based finite element adaptive method to perform haptic interaction 'with a deformable object. This method superimposes a local fine mesh upon a global coarse model, which consists of the entire deformable object. The local mesh and the global mesh are coupled by the s-version finite element method (s-FEM), which is generally used to enhance accurate solutions near the target points even more. The s-FEM can demonstrate a reliable deformation to users in real-time.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제45회 하계 정기학술대회 초록집
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• pp.127.1-127.1
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• 2013

Recent experimental evidence that fluorinated graphene creates local magnetic moments around F adatoms has not been supported by semilocal density-functional theory (DFT) calculations where the adsorption of an F adatom induces no magnetic moment in graphene. Here, we show that such an incorrect prediction of the nonmagnetic ground state is due to the self-interaction error inherent in semilocal exchange-correlation functionals. The present hybrid DFT calculation for an F adatom on graphene predicts not only a spin-polarized ground state with a spin moment of ${\sim}1{\mu}_B$, but also a long-range spin polarization caused by the bipartite nature of the graphene lattice as well as the induced spin polarization of the graphene states. The results provide support for the experimental observations of local magnetic moments in fluorinated graphene.

• Steel and Composite Structures
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• 제29권4호
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• pp.509-526
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• 2018

The direct strength method adopted by the AISI Standard and AS/NZS 4600 is an advanced design method meant to substitute the effective width method for the design of cold-formed steel structural members accounting for local instability of thin plate elements. It was proven that the design strength formula for the direct strength method could predict the ultimate strength of medium strength steel welded section compressive and flexural members with local buckling reasonably. This paper focuses on the modification of the direct strength formula for the application to high strength and high performance steel welded section columns which have the nominal yield stress higher than 460 MPa and undergo local buckling, overall buckling or their interaction. The resistance of high strength steel welded H and Box section columns calculated by the proposed direct strength formulae were validated by comparison with various compression test results, FE results, and predictions by existing specifications.

• Progress in Superconductivity
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• 제11권2호
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• pp.135-140
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• 2010

We propose a variational wave function for the ground state of the magnetic heavy fermion (HF) systems, in which both the Kondo and the RKKY interactions are variationally incorporated and the local f-orbital state exists as a linear combination of a full local moment state and a fully compensated state (mixed wave state). We describe the mechanism for the mixed wave ground state based on the large-N treatment of the Kondo lattice Hamiltonian added with RKKY interaction. With the mixed wave ground state we can explain several puzzling experiments in magnetic HF compounds such as a small value of local moment, coexistence of the antiferromagnetic (AFM) and the paramagnetic (PM) phases, local quantum criticality, etc.

• 생명과학회지
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• 제14권6호
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• pp.997-1002
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• 2004

이 논문은 단백질의 기능분석을 위해 핵심적으로 요구되는 단백질 상호작용 관계정보 및 기능정보 등을 체계적으로 제공할 수 있는 WASPIFA (Web-based Assistant System for Protein-protein Interaction and function Analysis) 시스템에 대해서 다루고 있다. WASPIFA 시스템은 특정 분야에 국한해서 단편적 정보를 제공하는 기존의 단백질 기능 및 상호작용 분석 시스템과는 달리 분석하고자 하는 서열의 종합적인 정보 즉, 기능정보 및 주석정보, 도메인 정보, 상호작용 관계정보 등을 제공한다. 일반 검색 및 분석 시스템에서 제공하지 못하는 종합적인 정보들은 다양한 전처리 과정을 통해서 얻어진 데이터 및 정보 등을 시스템 내에 로컬 데이터베이스화해 놓은 것이다. 최종 사용자는 종합적인 정보를 통해서 올바른 평가와 판단을 통해서 효과적인 단백질 상호작용 분석과 기능분석을 행할 수 있다. 또한 자동관리 및 데이터 갱신 기능을 갖추고 있어 시스템 관리자가 효율적으로 시스템을 유지 및 관리할 수 있다.

• 한국언론정보학보
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• 제46권
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• pp.354-386
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• 2009

1990년대 초반 이후부터 한국 시장에 본격적으로 등장하기 시작한 글로벌 여성잡지는 다른 글로벌 미디어 상품과는 달리 라이선스 계약이나 조인트 벤처를 통한 국내 출판사와의 파트너십을 통해 국내에서 제작 출판되고 있다. 이러한 소유구조의 특성으로 인해 글로벌 여성잡지에서는 글로벌 요소와 지역 요소가 혼재되어 나타나고 있는데, 다양한 글로벌/지역 요소들의 이해관계가 나타나는 글로벌 여성잡지는 단순히 글로벌 미디어라고 보기보다는 다양한 지역 요소들을 반영하고 이와 관계를 맺으며 새로운 콘텐츠를 생산해내는 글로컬(glocal)화된 미디어라고 할 수 있다. 따라서 본 연구에서는 글로벌 여성잡지에 나타나는 글로벌과 지역의 역동적 상호작용의 이해를 위해 제작과정에 나타나는 글로벌/로컬 요소를 살펴보고, 이러한 요소들이 서로 어떻게 상호작용하고 있는가를 현업 종사자들과의 인터뷰를 통해 알아보고자 하였다. 연구결과, 글로벌 여성잡지의 현지화 과정은 글로벌 미디어의 일방향적 동질화 과정이 아니라 지역 현실을 반영하는 글로벌과 지역의 상호작용 과정임을 보여주었으며, 글로벌 여성잡지 종사자들은 본사의 방침을 따라 기사의 콘셉트와 형식을 유지하면서도 한국 실정에 적합한 기사를 생산하고자 노력하고 있음을 볼 수 있었다.

• Steel and Composite Structures
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• 제4권5호
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• pp.367-384
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• 2004

A numerical model based on the finite element technique is adopted to investigate the behavior and strength of thin-walled I-section beam-columns. The model considers both the material and geometric nonlinearities. The model results were first verified against some of the currently available experimental results. A parametric study was then performed using the numerical model and interaction diagrams for the investigated beam-columns have been presented. The effects of the web depth-to-thickness ratio, flange outstand-to-thickness ratio and bending moment-to-normal force ratio on the ultimate strength of thin-walled I-section beam-columns were scrutinized. The interaction equations adopted for beam columns design by the NAS (North American Specifications for the design of cold formed steel structural members) have been critically reviewed. An equation for the buckling coefficient which considers the interaction between local buckling of the flange and the web of a thin-walled I-section beam-column has been proposed.

• Bulletin of the Korean Chemical Society
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• 제16권9호
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• pp.873-885
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• 1995

The local structural and thermodynamical properties of blends A-B/H of a diblock copolymer A-B and a homopolymer H are studied using the polymer reference interaction site model (RISM) integral equation theory with the mean-spherical approximation closure. The random phase approximation (RPA)-like static scattering function is derived and the interaction parameter is obtained to investigate the phase transition behaviors in A-B/H blends effectively. The dependences of the microscopic interaction parameter and the macrophase-microphase separation on temperature, molecular weight, block composition and segment size ratio of the diblock copolymer, density, and concentration of the added homopolymer, are investigated numerically within the framework of Gaussian chain statistics. The numerical calculations of site-site interchain pair correlation functions are performed to see the local structures for the model blends. The calculated phase diagrams for A-B/H blends from the polymer RISM theory are compared with results by the RPA model and transmission electron microscopy (TEM). Our extended formal version shows the different feature from RPA in the microscopic phase separation behavior, but shows the consistency with TEM qualitatively. Scaling relationships of scattering peak, interaction parameter, and temperature at the microphase separation are obtained for the molecular weight of diblock copolymer. They are compared with the recent data by small-angle neutron scattering measurements.

• Human Ecology Research
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• 제60권4호
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• pp.645-665
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• 2022

This study aimed to understand the effect of the characteristics of the influencer of public officials and the characteristics of internet live broadcasting in China on the brand image of local agricultural products, purchase intention, and word-of-mouth intention. A survey was administered to Chinese consumers who had purchased local agricultural products after watching live broadcasts on the internet by influencers of government officials. A total of 317 questionnaires were collected and the data were analyzed using SPSS 26.0 and AMOS 28.0. The key results were as follows. First, regarding the characteristics of the influencer of public officials, reliability, attractiveness, and expertise had a positive effect on the brand image of local agricultural products. Second, among the characteristics of internet live broadcasting, interaction and information had a positive effect on the brand image of local agricultural products, but entertainment did not. Third, the brand image of local agricultural products had a positive effect on purchase intention and word-of-mouth intention. Finally, the mediating effect of local agricultural brand image was evident in the reliability, attractiveness, and expertise characteristics of the influencer of public officials and purchase intention and word-of-mouth intention. Finally, the mediating effect of local agricultural brand image was evident in the interaction and information characteristics of internet live broadcasting and purchase intention and word-of-mouth intention.

• 한국시스템다이내믹스연구
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• 제13권4호
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• pp.5-31
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• 2012

This paper aims at investigating the dynamics between aging population and local finance. In recent years, the aging rate has been accelerating the pace. The trend implies that Korea is moving towards the aging society, presumably, with unprecedented speed in the world. Aging society's biggest problems are centered around the explosive growth of the financial needs. In particular, these problems are apt to appear more seriously in local governments, as most of them are confronted with high level of aging population and poor financial bases. Firstly, it analyzes how the population structure in the local government impacts local finance, income and expenditure. Based upon in-depth literature reviews, this study examines variables related to aging population and local fiance. Secondly, it focuses on a series of positive and negative feedback loops which would reveal the essence of the mutual interaction structure between aging population and local governments' fiscal behaviors.