Tank construction for space vehicles Patent

Liquid propellant tank design with semitoroidal bulkhea

The lattice of closed ideals in the Banach algebra of operators on certain Banach spaces.

Very few Banach spaces E are known for which the lattice of closed ideals in the Banach algebra of all (bounded, linear) operators on E is fully understood. Indeed, up to now the only such Banach spaces are, up to isomorphism, Hilbert spaces and the sequence spaces c0 and ℓp for 1p<∞. We add a new member to this family by showing that there are exactly four closed ideals in for the Banach space E(ℓ2n)c0, that is, E is the c0-direct sum of the finite-dimensional Hilbert spaces ℓ21,ℓ22,…,ℓ2n,…

eLearning and eMaking: 3D Printing Blurring the Digital and the Physical

This article considers the potential of 3D printing as an eLearning tool for design education and the role of eMaking in bringing together the virtual and the physical in the design studio. eLearning has matured from the basics of lecture capture into sophisticated, interactive learning activities for students. At the same time, laptops and internet enabled phones have made computer-based learning mobile, invading classroom learning, changing communication between students, enabling on the spot research, and making the recording of ideas and activities easier. The barriers between online and offline are becoming blurred in a combined digital and physical learning environment. Three-dimensional printing is part of this unification and can be an empowering learning tool for students, changing their relationship with the virtual and the physical, allowing them to take ideas and thinking from screen to reality and back again in an iterative, connected process, however, from an eLearning point of view it is, more importantly, a transformative technology with the potential to change the relationship of the learner to their learning and the scope and nature of their work. Examples from Griffith Product Design student learning illustrate the potential of eMaking to enhance combined learning in a digital ag

Understanding the scope for a product design education discourse on additive manufacturing

© 2018 Korean Society of Design Science. Background Additive manufacturing has the potential to disrupt conventional manufacturing. The argument presented in this article is that because product design students need to be achieving an advanced level of design for additive manufacturing to effectively utilise the technology in the near future, product design academics need to be researching the development of more advanced, discipline specific, learning objectives for designing to their constraints and opportunities. These need to address designing for complex technical applications and critically engage with implications for the future of design for manufacturing. The rationale underpinning this argument is based on a systematic quantitative literature review of research addressing design for additive manufacturing education. Methods The systematic quantitative literature review provides a survey view of a sample data-base (Scopus), focussing on peer reviewed journal articles and conference papers, and also analysis of two leading design research journals, Design Studies and Design Issues based on searches capturing data on additive manufacturing or 3D printing, product design and education. These were refined by date, authority (based on publication source) and relevance. The analysis provides an overview of the product design discipline's response to the topic and highlights issues. Results An initial scoping search of the terms for title, abstract or keywords in Scopus identified 3720 published articles, from 2009-2017 rising each year: 59, 67, 84, 125, 192, 358, 666, 949, 1220. The data from a systematic quantitative literature review was analysed through the lens of sociotechnology theory, to foster a perspective on educational research at the intersection of technology and society. The results showed the majority of peer reviewed publications were written by engineering and architecture researchers, rather than product design academics (11%). Analysis of design publications showed an emphasis on 3D printing as a prototyping tool supporting other learning activities, rather than a focus in itself. A small proportion of publications advanced design for additive manufacturing education, both technically and in a broader economic, environmental and social context. Conclusions Overall, product design academics are not demonstrating the same level of engagement with research into additive manufacturing other discipline faculty members are, for example engineering and architectural. The implications are that a body of knowledge specific to product design is not being developed at the same pace and the potential disruption of design for manufacturing principles, practice and organization by additive manufacturing not yet addressed

Magnetic latches provide positive overpressure control

Louvers are used for overpressure safety venting in rooms or chambers where explosion hazards exist. The louvers have individually hinged closures that are held in locked position by commercially available magnets that quickly release them in an overpressure condition

A Pilot Study for Utilizing Additive Manufacturing and Responsive Rewards in Physical Activity Gamification

Health related issues from being overweight or obese are significant global challenges, and whilst increased activity is known to reduce the health risks associated with these conditions, current wearable and activity tracking devices alone are insufficient to motivate everyone over the long-term necessary to make significant change. This paper explores novel gamified systems as part of a pilot study to leverage additive manufacturing and Internet of Things technologies to increase motivation for physical activity, creating new ways for people to be rewarded in the physical world, and for activity data to be communicated in more abstract and customisable ways. These systems were exhibited and discussed at the 2017 Design 4 Health conference in Melbourne, Australia, and are intended to contribute to research by designers and fitness companies in thinking beyond the digital interface, and in particular to engage young people in the physical world

The Aquatic Biota and Groundwater Quality of Springs in the Lincoln Hills, Wisconsin Driftless, and Northern till Plains Sections of Illinois

ID: 8307INHS Technical Report prepared for Environmental Protection Trust Fund Commission and Illinois Department of Natural Resources Division of Energy and Environmental AssessmentU of I OnlyRestriction applied due to concern over geolocation information of springs on private property