1,721,298 research outputs found
Optical Evidence of Polarons in Superconducting Cuprates
No full textEdited by A. Barone, D. Fiorani, and A. Tampier
Fundamental and Applicative Aspects of Disordered Magnetism
No full textMeeting of the magnetism section of the italian condensed matter grou
Glassy dynamics in an exchange bias nanogranular system: Fe/FeOx
No full textThe exchange bias properties of a nanogranular system composed of Fe nanoparticles dispersed in an iron oxide matrix are investigated at different temperatures, in the 5-250 K range, upon varying the cooling field and the temperature at which it is applied. The exchange field, resulting from the exchange coupling between the metallic particles and the oxide matrix, strongly depends on the magneto-thermal history of the sample. Such dependence is consequence of the glassy magnetic nature of the oxide phase and it is explained considering that different frozen spin configurations of the matrix are selected on varying the temperature and the field-cooling proces
Castelvecchio Calvisio. A methodology for re-using historic rural villages and small towns
No full textDisciplinary debate on the uses of ancient architecture still suffers from a lack of attention. Intended use;
defining a possible methodology to finally identify what functions can be implemented to
ensure the virtuous process (as discussed above); attention to the issue of additions – all
these themes must again become central in disciplinary investigations. Today, discipline
proposals seem to oscillate between those whose solution simply indicates the return to
the building’s original use and those for whom it is more interesting and useful to provide general guidance and method, favoring the goal of minimum alteration, or of prolonging the life and permanence of the architecture’s characterising signs.
In this regard we must reflect on the relative poverty of proposals in the disciplinary publications and manuals. But we should also consider the positions that have been briefly summarised above. In this paper the author tries to give a possible methodology on how take with the problem of reuse of small abandoned villages
Aging in an exchange biased Fe/FeOxide nanogranular system’
No full textA strict connection between exchange bias (EB) and aging effect was observed in a system composed of Fe nanoparticles, dispersed in a structurally disordered Fe oxide matrix showing spin-glass like properties: the exchange field measured at T=5 K can be controlled by properly varying the time, tw spent at T=50 K, after applying the cooling field. The way in which the aging of the sample influences the training effect, provides information on the underlying mechanism of the phenomenon in this system
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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