4,585 research outputs found
Implementation of perception and action at nanoscale
Real time combination of nanosensors and nanoactuators with virtual reality
environment and multisensorial interfaces enable us to efficiently act and
perceive at nanoscale. Advanced manipulation of nanoobjects and new strategies
for scientific education are the key motivations. We have no existing intuitive
representation of the nanoworld ruled by laws foreign to our experience. A
central challenge is then the construction of nanoworld simulacrum that we can
start to visit and to explore. In this nanoworld simulacrum, object
identifications will be based on probed entity physical and chemical intrinsic
properties, on their interactions with sensors and on the final choices made in
building a multisensorial interface so that these objects become coherent
elements of the human sphere of action and perception. Here we describe a 1D
virtual nanomanipulator, part of the Cit\'e des Sciences EXPO NANO in Paris,
that is the first realization based on this program.Comment: Proceedings of ENACTIVE/07 4th International Conference on Enactive
Interfaces Grenoble, France, November 19th-22nd, 200
Homogeneous Spiking Neuromorphic System for Real-World Pattern Recognition
A neuromorphic chip that combines CMOS analog spiking neurons and memristive
synapses offers a promising solution to brain-inspired computing, as it can
provide massive neural network parallelism and density. Previous hybrid analog
CMOS-memristor approaches required extensive CMOS circuitry for training, and
thus eliminated most of the density advantages gained by the adoption of
memristor synapses. Further, they used different waveforms for pre and
post-synaptic spikes that added undesirable circuit overhead. Here we describe
a hardware architecture that can feature a large number of memristor synapses
to learn real-world patterns. We present a versatile CMOS neuron that combines
integrate-and-fire behavior, drives passive memristors and implements
competitive learning in a compact circuit module, and enables in-situ
plasticity in the memristor synapses. We demonstrate handwritten-digits
recognition using the proposed architecture using transistor-level circuit
simulations. As the described neuromorphic architecture is homogeneous, it
realizes a fundamental building block for large-scale energy-efficient
brain-inspired silicon chips that could lead to next-generation cognitive
computing.Comment: This is a preprint of an article accepted for publication in IEEE
Journal on Emerging and Selected Topics in Circuits and Systems, vol 5, no.
2, June 201
Global Ethics and Nanotechnology: A Comparison of the Nanoethics Environments of the EU and China
The following article offers a brief overview of current nanotechnology policy, regulation and ethics in Europe and The People’s Republic of China with the intent of noting (dis)similarities in approach, before focusing on the involvement of the public in science and technology policy (i.e. participatory Technology Assessment). The conclusions of this article are, that (a) in terms of nanosafety as expressed through policy and regulation, China PR and the EU have similar approaches towards, and concerns about, nanotoxicity—the official debate on benefits and risks is not markedly different in the two regions; (b) that there is a similar economic drive behind both regions’ approach to nanodevelopment, the difference being the degree of public concern admitted; and (c) participation in decision-making is fundamentally different in the two regions. Thus in China PR, the focus is on the responsibility of the scientist; in the EU, it is about government accountability to the public. The formulation of a Code of Conduct for scientists in both regions (China PR’s predicted for 2012) reveals both similarity and difference in approach to nanotechnology development. This may change, since individual responsibility alone cannot guide S&T development, and as public participation is increasingly seen globally as integral to governmental decision-making
Regulating Nanotechnology: A Private–Public Insurance Solution
Nanotechnology promises to revolutionize innovation in nearly every industry. However, nanomaterials’ novel properties pose potentially significant health and environmental risks. Views in the current debate over nanotechnology regulation range from halting all research and development to allowing virtually unregulated innovation. One viable regulatory solution balancing commercialization and risk is the adoption of a mandatory private-public insurance program
Regulating Nanotechnology: A Private–Public Insurance Solution
Nanotechnology promises to revolutionize innovation in nearly every industry. However, nanomaterials’ novel properties pose potentially significant health and environmental risks. Views in the current debate over nanotechnology regulation range from halting all research and development to allowing virtually unregulated innovation. One viable regulatory solution balancing commercialization and risk is the adoption of a mandatory private-public insurance program
Nanotechnology and business opportunities: scenarios as awareness instrument
For a few years now, nanotechnology has been recognised as a promising new growth innovator. This leads to a shift from the exploration of nanotechnology knowledge towards a phase of exploitation. The coming years this commercialisation of nanotechnology will be extended. Nanotechnology is a disruptive technology phenomenon, which leads to more difficulties in overseeing business opportunities. Additionally, the fact that high-tech small firms, especially those dealing with nanotechnology, are highly interested in developments in science and technology, begs the question how to stimulate the awareness for (new) business opportunities in nanotechnology within these firms. A promising strategy to stimulate learning and awareness of business opportunities in nanotechnology is the use of scenarios. These projections focused on uncertainty stretch the mental model of entrepreneurs and/or managers and have the ability to activate learning processes. This paper presents the (theoretical) fundaments of scenario usage in relation to the recognition of business opportunities in nanotechnology.
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