971 research outputs found

    Nanosatellite fabrication and analysis

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    The advancements in technologies used in the aerospace industry have allowed universities to experiment with and develop small-scale satellites. Universities are taking advantage of the relatively low development costs of nanosatellite programs to give students experience in the field of spacecraft design. The purpose of Santa Clara University\u27s team, Nanosatellite Fabrication and Analysis, is to create a process to expedite the design, analysis, and fabrication phase of nanosatellite structures for students working on future satellite missions. The objective is to design four baseline nanosatellite structures to accommodate a range of potential missions where the designs are simple enough to be completely fabricated by students utilizing only the tools found in the Santa Clara University\u27s machine lab. Finite element analysis is conducted to ensure the designs meet NASA standards for natural frequency and that it can survive the forces it is subjected to during a launch. SatTherm, an easy to use thermal analysis tool for small spacecrafts, was used to conduct initial thermal simulations of the nanosatellite to determine the type of thermal components that will work for future missions. The success of team Nanosatellite Fabrication and Analysis proves that students can fabricate the structural frame of a nanosatellite using only the tools available in SCU\u27s machine lab

    Launching the Grand Challenges for Ocean Conservation

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    The ten most pressing Grand Challenges in Oceans Conservation were identified at the Oceans Big Think and described in a detailed working document:A Blue Revolution for Oceans: Reengineering Aquaculture for SustainabilityEnding and Recovering from Marine DebrisTransparency and Traceability from Sea to Shore:  Ending OverfishingProtecting Critical Ocean Habitats: New Tools for Marine ProtectionEngineering Ecological Resilience in Near Shore and Coastal AreasReducing the Ecological Footprint of Fishing through Smarter GearArresting the Alien Invasion: Combating Invasive SpeciesCombatting the Effects of Ocean AcidificationEnding Marine Wildlife TraffickingReviving Dead Zones: Combating Ocean Deoxygenation and Nutrient Runof

    Always in control? Sovereign states in cyberspace

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    For well over twenty years, we have witnessed an intriguing debate about the nature of cyberspace. Used for everything from communication to commerce, it has transformed the way individuals and societies live. But how has it impacted the sovereignty of states? An initial wave of scholars argued that it had dramatically diminished centralised control by states, helped by a tidal wave of globalisation and freedom. These libertarian claims were considerable. More recently, a new wave of writing has argued that states have begun to recover control in cyberspace, focusing on either the police work of authoritarian regimes or the revelations of Edward Snowden. Both claims were wide of the mark. By contrast, this article argues that we have often misunderstood the materiality of cyberspace and its consequences for control. It not only challenges the libertarian narrative of freedom, it suggests that the anarchic imaginary of the Internet as a ‘Wild West’ was deliberately promoted by states in order to distract from the reality. The Internet, like previous forms of electronic connectivity, consists mostly of a physical infrastructure located in specific geographies and jurisdictions. Rather than circumscribing sovereignty, it has offered centralised authority new ways of conducting statecraft. Indeed, the Internet, high-speed computing, and voice recognition were all the result of security research by a single information hegemon and therefore it has always been in control

    v. 72, issue 14, February 18, 2005

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    Faculty Excellence

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    Each year, the University of New Hampshire selects a small number of its outstanding faculty for special recognition of their achievements in teaching, scholarship and service. Awards for Excellence in Teaching are given in each college and school, and university-wide awards recognize public service, research, teaching and engagement. This booklet details the year\u27s award winners\u27 accomplishments in short profiles with photographs and text

    Index to 1984 NASA Tech Briefs, volume 9, numbers 1-4

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    Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage commercial application. This index for 1984 Tech B Briefs contains abstracts and four indexes: subject, personal author, originating center, and Tech Brief Number. The following areas are covered: electronic components and circuits, electronic systems, physical sciences, materials, life sciences, mechanics, machinery, fabrication technology, and mathematics and information sciences

    Privacy, Security, and the Connected Hairbrush

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    The Beginnings and Prospective Ending of “End-to-End”: An Evolutionary Perspective On the Internet’s Architecture

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    The technology of “the Internet” is not static. Although its “end-to- end” architecture has made this “connection-less” communications system readily “extensible,” and highly encouraging to innovation both in hardware and software applications, there are strong pressures for engineering changes. Some of these are wanted to support novel transport services (e.g. voice telephony, real-time video); others would address drawbacks that appeared with opening of the Internet to public and commercial traffic - e.g., the difficulties of blocking delivery of offensive content, suppressing malicious actions (e.g. “denial of service” attacks), pricing bandwidth usage to reduce congestion. The expected gains from making “improvements” in the core of the network should be weighed against the loss of the social and economic benefits that derive from the “end-to-end” architectural design. Even where technological “fixes” can be placed at the networks’ edges, the option remains to search for alternative, institutional mechanisms of governing conduct in cyberspace.

    What If (Dublin)

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    Raby developed three ‘What If...’ exhibitions with Dunne (RCA), asking what role design can play in imagining possible futures and raising social, cultural and ethical questions, building on 20 years’ practice in Critical Design theorised inter alia in Dunne and Raby’s Design Noir (2001), Hertzian Tales (2005) and Speculative Everything (2013). Raby’s research included concept development, extended collaboration with exhibitors to develop their contributions, and devising the engagement strategy: all three required localised approaches to audiences, circumstances and commissioning hosts. Extensive investigation was needed in synthetic biology, nanotechnology, surveillance technologies and the domestication of natural phenomena, working with scientific partners at Imperial College and Cambridge University. ‘What If
’ Dublin (2009) comprised 29 projects envisioning hypothetical futures and was reviewed in Irish broadsheets (Examiner, Times, Independent), Wired and New Scientist: ‘the exhibits
address questions on scientific or medical ethics that must be asked in our bio-technological age’ (http://www.newscientist.com/blogs/culturelab/2009/12/post-2.html). Exhibits were also shown at the Art Institute of Chicago, Israel Museum, MoMA and Ars Electronica Center. About 1.8 million people pass the windows of the Wellcome Trust building in London annually, making them an important means of science communication. Wellcome commissioned a changing ‘What If
’ exhibition of 15 themes over 15 months (February 2010 – March 2011). Raby reconceived the design strategy with exhibits engaging at different distances, from passing buses to close-up study. The third exhibition, for the Beijing International Design Triennial (2011), explored the impact on future life of novel technologies through 58 projects in 130 exhibits from 36 designers (12 from China), for a diverse audience. The exhibition and related symposium at Tsinghua University were supported by the British Council. The Triennial was visited by approximately 500,000 visitors and featured widely, e.g. China Central Television, People's Daily, New York Times (all 2011) and Zhuangshi journal (2011 and 2012)

    In defense of science—What would John do?

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    Recent onslaughts on the importance of pure research to our collective well-being are trending. In this essay, I discuss the issues involved and offer a rebuttal. The thoughts are inspired by my mentor, academic sibling, and idol John Leask Lumley
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