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RISS 인기검색어
- 검색키워드
- 저자 : Matusiak, (검색결과 6 건)
- 무료
- 기관 내 무료
- 유료
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On the non-linearities of ship's restoring and the Froude-Krylov wave load part
Matusiak, Jerzy Edward The Society of Naval Architects of Korea 2011 International Journal of Naval Architecture and Oc Vol.3 No.1
When formulating a general, non-linear mathematical model of ship dynamics in waves the hydrostatic forces and moments along with the Froude-Krylov part of wave load are usually concerned. Normally radiation and the diffraction forces are regarded as linear ones. The paper discusses briefly few approaches, which can be used in this respect. The concerned models attempt to model the non-linearities of the surface waves; both regular and the irregular ones, and the nonlinearities of the restoring forces and moments. The approach selected in the Laidyn method, which is meant for the evaluation of large amplitude motions in the 6 degrees-of-freedom, is presented in a bigger detail. The workability of the method is illustrated with the simulation of ship motions in irregular stern quartering waves.
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On the non-linearities of ship’s restoring and the Froude-Krylov wave load part
Jerzy Edward Matusiak 대한조선학회 2011 International Journal of Naval Architecture and Oc Vol.3 No.1
When formulating a general, non-linear mathematical model of ship dynamics in waves the hydrostatic forces and moments along with the Froude-Krylov part of wave load are usually concerned. Normally radiation and the diffraction forces are regarded as linear ones. The paper discusses briefly few approaches, which can be used in this respect. The concerned models attempt to model the non-linearities of the surface waves; both regular and the irregular ones, and the nonlinearities of the restoring forces and moments. The approach selected in the Laidyn method, which is meant for the evaluation of large amplitude motions in the 6 degrees-of-freedom, is presented in a bigger detail. The workability of the method is illustrated with the simulation of ship motions in irregular stern quartering waves.
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디지털 도서관 평가기준: 이용자들이 원하는 것은 무엇인가?
Xie, Iris,Joo, Soohyung,Matusiak, Krystyna K. Korean Biblia Society for Library and Information 2014 한국비블리아학회지 Vol.25 No.1
기존의 여러 연구들에서 디지털 도서관 평가를 위한 기준들이 제시되어 왔으나, 대부분의 연구에서 평가기준에 대한 이용자 관점을 이해하려는 노력이 부족하였다. 본 연구는 디지털 도서관 평가 기준들에 대한 이용자들의 의견을 미국 내 5개 대학교에서 10명의 교수 이용자와 20명의 학생 이용자에게 설문을 통해 직접 조사하였다. 설문 참여자들은 본 연구진에 의해 제시된 8개 영역 (장서, 정보조직, 맥락 등) 내 평가 기준들의 중요성에 대해 7점 척도로 응답하였다. 설문의 결과는 이용자들이 장서의 이용과 품질, 서비스와 관련된 항목들을 도서관 운영항목에 비해 상대적으로 더 중요하게 생각하고 있었음을 보여주었다. 본 연구의 결과는 이용자 중심의 디지털 도서관 개발과 관련하여 이용자의 요구와 선호를 반영하는 도서관 평가체계 구축에 도움이 될 것이다. Criteria for evaluating digital libraries have been suggested in prior studies, but limited research has been done to understand users' perceptions of evaluation criteria. This study investigates users' opinions of the importance of digital library evaluation criteria. Thirty user participants, including 10 faculty members and 20 students, were recruited from five universities across the United States. They were asked to rate the importance of evaluation criteria in eight dimensions (e.g. collections, information organization, context, etc.). The results demonstrate that users care about evaluation criteria related to the use and quality of collection and services rather than the operation of digital libraries. The findings of this study are relevant to the development of user-centered digital libraries and associated evaluation frameworks through the incorporation of unique users' needs and preferences.
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Digital Library Evaluation Criteria: What do Users Want?
Iris Xie,Soohyung Joo,Krystyna K. Matusiak 한국비블리아학회 2014 한국비블리아학회지 Vol.25 No.1
Criteria for evaluating digital libraries have been suggested in prior studies, but limited research has been done to understand users’ perceptions of evaluation criteria. This study investigates users’ opinions of the importance of digital library evaluation criteria. Thirty user participants, including 10 faculty members and 20 students, were recruited from five universities across the United States. They were asked to rate the importance of evaluation criteria in eight dimensions (e.g. collections, information organization, context, etc.). The results demonstrate that users care about evaluation criteria related to the use and quality of collection and services rather than the operation of digital libraries. The findings of this study are relevant to the development of user-centered digital libraries and associated evaluation frameworks through the incorporation of unique users’ needs and preferences.
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