http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : ???(Lv Xuejing) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
北京市老年人网络养老服务需求意愿及影响因素分析基于 "北京市城市老年人网络养老需求意愿”调查数据
???(Lv Xuejing),丁一(Ding Yi) 글로벌시니어건강증진개발원 2013 글로벌시니어건강증진개발원 논문집 Vol.3 No.1
With the development of the socio-economic and the improving degree of the aging of population, traditional pension service system in the form of family, community and pension agency, which concludes life care, mental health, culture and entertainment, social participation and rights protection has been unable to fully meet increasing needs from the aged either in infrastructure or related services. Under the social environment of rising Internet penetration, the paper studied the status of the network pension service firstly, then analyzed the requirements and influence factors of network pension service of the aged, using survey data of the Beijing demand will of urban elderly Network pension by Binary Logistic regression analysis finally, the paper tried to build a network pension service platform based on the conclusions, which has significance both in theory and practice for improving pension service level and achieving a new leaps
-
Lv Tiantong,Chen Zipeng,Wang Dengfeng,Du Xuejing 한국CDE학회 2024 Journal of computational design and engineering Vol.11 No.1
Combined application of steel, aluminum, and carbon fiber reinforcement plastic (CFRP) is the main direction of future lightweight body development. However, the anisotropy and additional lamination design variables of CFRP parts pose significant challenges for the development of multi-material bodies. This study establishes a parametric design method for the variable-thickness lamination scheme based on non-uniform rational B-splines, it can be coupled with existing parametric design methods for structural shapes to formulate a complete parametric design and modeling of CFRP components. On this basis, a homogenized intermediate material property is derived from classic laminate theory by introducing lamination assumptions, it enables a stepwise multi-material body optimization method to solve the challenge that components’ material design variables switching between CFRP and alloy will introduce/eliminate lamination design variables iteratively, posing a great optimization convergence difficulty. The proposed parametric modeling method for CFRP components was validated by experimental tests of a fabricated roof beam, and the proposed optimization method was applied to a vehicle body, achieving 15.9%, 23.9%, 18.6%, and 12.2% increase in bending and torsional stiffness and modal frequencies; 20.2%, 9.3%, and 12.7% reduction of weight and peak acceleration in frontal and side collisions. This study enables the forward design of multi-material bodies compatible with CFRP parts.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
