Design principles, seismic actions, performance requirements, compliance criteria

2018 ◽  
pp. 79-124
Author(s):  
George G. Penelis ◽  
Gregory G. Penelis
2014 ◽  
Vol 522-524 ◽  
pp. 1215-1219 ◽  
Author(s):  
Shan Shan Zhou ◽  
Jian Jiao ◽  
Qiang Sun

In aerospace, the design principles have transformed from the pursuit of performance to a balance among performance, costs, reliability and other aspects, and how to meet the system performance requirements under the premise of minimizing costs has become a serious problem. In this paper, the relationships between the constellation availability and the satellite reliability were modeled considering the replacement mode of the back-up satellite. A case study was presented to show the effects of the satellite reliability on constellation availability.


2020 ◽  
Vol 48 (2) ◽  
pp. 399-409
Author(s):  
Baizhen Gao ◽  
Rushant Sabnis ◽  
Tommaso Costantini ◽  
Robert Jinkerson ◽  
Qing Sun

Microbial communities drive diverse processes that impact nearly everything on this planet, from global biogeochemical cycles to human health. Harnessing the power of these microorganisms could provide solutions to many of the challenges that face society. However, naturally occurring microbial communities are not optimized for anthropogenic use. An emerging area of research is focusing on engineering synthetic microbial communities to carry out predefined functions. Microbial community engineers are applying design principles like top-down and bottom-up approaches to create synthetic microbial communities having a myriad of real-life applications in health care, disease prevention, and environmental remediation. Multiple genetic engineering tools and delivery approaches can be used to ‘knock-in' new gene functions into microbial communities. A systematic study of the microbial interactions, community assembling principles, and engineering tools are necessary for us to understand the microbial community and to better utilize them. Continued analysis and effort are required to further the current and potential applications of synthetic microbial communities.


2020 ◽  
Vol 26 (3) ◽  
pp. 477-510
Author(s):  
Cheolil Lim ◽  
Hyeongjong Han ◽  
Sumin Hong ◽  
Yukyeong Song ◽  
Dayeon Lee

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