Finding inspiration in the genetics behind a giraffe’s neck, students at Washington University in St. Louis used parametric design methods to build a flexible piece of public furniture for the university campus.
This project will develop and test a next generation digital preservation framework including tools for analysing, ingesting, managing, accessing and reusing information objects and data.
The SHAMAN Integrated Project aims at developing a new framework for long-term digital preservation (more than one century) by exploring the potential of recent developments in the areas of GRID computing, federated digital library architectures, multivalent emulation and semantic representation and annotation.
The researchers' vision is: "For the longer term, SHAMAN will develop radically new approaches to Digital Preservation, such as those inspired by human capacity to deal with information and knowledge, providing a sound basis and instruments for unleashing the potential of advanced ICT to automatically act on high volumes and dynamic and volatile digital content, guaranteeing its preservation, keeping track of its evolving semantics and usage context and safeguarding its integrity, authenticity and long term accessibility over time."
The project plans to deliver a set of integrated tools supporting the various aspects of the preservation process: analysis/characterisation, ingestion, management, access and reuse. Work includes trials and validation of the tools in three application domains dealing with different types of objects: scientific publishing and government archives, industrial design and engineering (e.g. CAD), and e-science resources.
SHAMAN's dissemination and exploitation plans aim at actively fostering outreach and take-up of results and will be tailored according to the specific needs of the scientific / academic world and of industry users. SHAMAN's work will be coordinated with other digital preservation projects and initiatives at national and international level.
Rui Yang, Kazuya Terabe and colleagues at the National Institute for Materials Science (NIMS), and the International Center for Materials Nanoarchitectonics (MANA) in Japan and at the California NanoSystems Institute/UCLA havedeveloped “nanoionic” (processes connected with fast ion transport in all-solid-state nanoscale systems) devices capable of a broad range of neuromorphic and electrical functions.
Such a device would allow for fabrication of on-demand configurable circuits, analog memories, and digital-neural fused networks in a single device architecture. Synaptic devices that mimic the learning and memory processes in living organisms are attracting interest as an alternative to standard computing elements to help extend performance beyond current physical limits. However, artificial synaptic systems have been hampered by complex fabrication requirements and limitations in the learning and memory functions they mimic.
This device is based on a platinum-tungsten trioxide (WO3–x) device using oxygen ions migrating in response to voltage sweeps. Accumulation of the oxygen ions at the electrode leads to Schottky diode-like potential barriers and resulting changes in resistance and rectifying characteristics. The stable bipolar switching behavior at the platinum-tungsten trioxide-based device is attributed to the formation of a conductive filament and oxygen absorbability of the platinum electrode.
The researchers noted that the device properties* — volatile and non-volatile states and current fading following positive voltage pulses — are similar to neural behavior — that is, short- and long-term memory and forgetting processes. The device was found to possess a wide range of time scales of memorization, resistance switching, and rectification varying from volatile to permanent in a single device.
According to scientists at Rice University, a material called carbyne will be the strongest material if and when anyone can make it in bulk.
Carbyne is a chain of carbon atoms held together by either double or alternating single and triple atomic bonds. That makes it a true one-dimensional material, unlike atom-thin sheets of graphene that have a top and a bottom or hollow nanotubes that have an inside and outside.
According to calculations reported in the journal ACS Nano, carbyne’s tensile strength – the ability to withstand stretching – surpasses that of any other known material and is double that of graphene.
It has twice the tensile stiffness of graphene and carbon nanotubes and nearly three times that of diamond. Stretching carbyne as little as 10 percent alters its electronic band gap significantly. The material is stable at room temperature, largely resisting crosslinks with nearby chains.
“You could look at it as an ultimately thin graphene ribbon, reduced to just one atom, or an ultimately thin nanotube. It could be useful for nanomechanical systems, in spintronic devices, as sensors, as strong and light materials for mechanical applications or for energy storage,” said study senior author Dr Boris Yakobson.
“Regardless of the applications, it’s very exciting to know the strongest possible assembly of atoms.”
“Based on the calculations, carbyne might be the highest energy state for stable carbon. People usually look for what is called the ‘ground state,’ the lowest possible energy configuration for atoms. For carbon, that would be graphite, followed by diamond, then nanotubes, then fullerenes. But nobody asks about the highest energy configuration. We think this may be it, a stable structure at the highest energy possible.”
The Digital Future of Architectural History Archinect In creating associated descriptive metadata, in tagging building entries to describe their materials, types, and, perhaps most especially, their styles, the author of metadata is practicing the...
digital grotesque is a fully immersive, human-scale architectural object, created by michael hansmeyer and benjamin dillenburger, which is the first life-sized construction to be entirely 3D printed out of sandstone.
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