1,721,000 research outputs found
Marxian individualism and property rights
No full textIn this article, we examine the assumptions of the methodology of studying the CPRs situations, and put forward a comparison with the thought of Marx. In the conclusions, we provide some hints on the possibility of establishing the theory of CPRs on a different methodology, rooted in Marx
Compact dispersed spaces and the alpha-left property
No full textThe concept of an
α
\alpha
-left space was introduced by Arhangel’skij in [A
1
_{1}
], where, among other results, it was shown that every
T
2
{T_2}
compact
α
\alpha
-left space is dispersed. In [A
2
_{2}
] an example was given to show that, assuming the continuum hypothesis CH, not every
T
2
{T_2}
compact dispersed space is
α
\alpha
-left. The aim of this article is to obtain some sufficient conditions for
T
2
{T_2}
space to be
α
\alpha
-left and to construct a large class (which contains all products of uncountable ordinals) of compact
T
2
{T_2}
dispersed spaces which are not
α
\alpha
-left.</p
Structural characterization of nc-Si films grown by low-energy PECVD on different substrates
No full textAdvances in structural characterization of thin film nanocrystalline silicon for photovoltaic applications
No full textGrowth of Cu2MnSnS4 PV absorbers by sulfurization of evaporated precursors
No full textEarth abundant Cu2MnSnS4 (CMTS) absorbers for thin film solar cells were grown for the first time by a two-step vacuum approach. Metal precursors deposited on Mo-coated soda lime glass by thermal evaporation were annealed in sulfur vapors. Two series of CMTS samples were prepared to evaluate the effect of both the precursor stack (thickness and order of the metal layers) and the annealing procedure on the thin film quality. Several techniques, including Scanning Electron Microscopy, Energy Dispersive Spectroscopy, Raman, X-ray Diffraction and Photoluminescence were used to test the CMTS layers and to study any possible secondary phase. Large grain size, high absorption coefficient and direct band suitable for PV applications have been obtained for Cu-poor/Mn-rich samples grown by sulfurization at 500 °C < T < 585 °C with an initial step at 115 °C to enhance the alloy formation. Encouraging but improvable performance were obtained (efficiency 0.33%, open-circuit voltage 226 mV, short-circuit current density 4 mA/cm2, fill factor 36.3%), confirming the potential of CMTS as absorber layer for low-cost solar cells
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
Rossi-Doria A., Le donne nella modernità, Pazzini, Villa Verucchio 2007
No full textRecensione al volume: Rossi-Doria A., Le donne nella modernità, Pazzini, Villa Verucchio 200
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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