11,453 research outputs found
Evolutionary dynamics and scientific flows of nanotechnology research across geo-economic areas
The purpose of this paper is to analyze, by concentration measures, metrics of dispersion and heterogeneity, the dynamics of the production of scientific output in nanosciences and nanotechnologies across worldwide economic players. The main result is that the concentration ratio of the production of nanotechnology research across different macro subject areas has been reducing over time and space, because knowledge dynamics of nanotechnology research has been spreading among new research fields and different industries. In addition, South Korea and China show higher performance than other countries in nanotechnology scientific products per million people. This scientific analysis is important in order to understand the current knowledge dynamics and technological trajectories in nanotechnology that may support future patterns of economic growth.Nanotechnology; Technological System; Technological Trajectories; Concentration; Changeability, Knowledge Dynamics
The delineation of nanoscience and nanotechnology in terms of journals and patents: a most recent update
The journal set which provides a representation of nanoscience and
nanotechnology at the interfaces among applied physics, chemistry, and the life
sciences is developing rapidly because of the introduction of new journals. The
relevant contributions of nations can be expected to change according to the
representations of the relevant interfaces among journal sets. In the 2005 set
the position of the USA decreased more than in the 2004-set, while the EU-27
gained in terms of its percentage of world share of citations. The tag "Y01N"
which was newly added to the EU classification system for patents, allows for
the visualization of national profiles of nanotechnology in terms of relevant
patents and patent classes
Does Size Matter? The Multipolar International Landscape of Nanoscience
How do different countries tackle nanoscience research? Are all countries similar except for a trivial size effect, as science is often assumed to be universal? Or does size dictate large differences, as large countries are able to develop activities in all directions of research, while small countries have to specialize in some specific niches? Alternatively, is size irrelevant, as all countries have followed different historical paths, leading to different patterns of specialisation? Here, we develop an original method that uses a bottom-up definition of scientific subfields to map the international structure of any scientific field. Our analysis shows that nanoscience research does not show a universal pattern of specialisation, homothetic of that of a single global leader (e.g., the United States). Instead, we find a multipolar world, with four main ways of doing nanosciences.Fil: Levin, Luciano Guillermo. Universidad Nacional de La Pampa. Facultad de Ciencias Humanas. Instituto de Estudios Sociohistóricos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Jensen, Pablo. École normale supérieure de Lyon; FranciaFil: Kreimer, Pablo Rafael. Universidad Maimónides; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Knowledge Integration and Diffusion: Measures and Mapping of Diversity and Coherence
I present a framework based on the concepts of diversity and coherence for
the analysis of knowledge integration and diffusion. Visualisations that help
understand insights gained are also introduced. The key novelty offered by this
framework compared to previous approaches is the inclusion of cognitive
distance (or proximity) between the categories that characterise the body of
knowledge under study. I briefly discuss the different methods to map the
cognitive dimension
Current Approaches of Occupational and Safety Health Management in Work Environments Containing Nanoparticles
The development of nanotechnology is particularly in recent years very dynamic and is
applied in many not only technical branches. This is not possible to say about monitoring
of possible health and environmental undesirable influence. The first area of possible risk
assessment is work environment because there is a lot of possible ways to exposition.
The aim of the paper is to analyze current situation in the field of occupational safety
and health management in the workspace with occurrence of nanoparticles not only
like the engineered nanomaterials. Because there is a lot of influence which could have
the negative impact on the employee's healt
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