2,090 research outputs found
Digitálias: a Women Art Collective in the Fight Against Gender Violence Through Co-Creative Net Art
In this article, we present and discuss the ongoing co-creative net art and transmedia labs with Digitálias, a female collective in the fight against gender violence. Since 2018, we have been organising art labs with the Associação Ser Mulher (ASM), based in Évora, aimed at female victims of intimate partner violence living in a Shelter House, as well as ASM technicians. The labs are part of an exploratory research whose main aim is to analyse how the community artistic practice of net art can play a social role as a tool for empowerment, self-esteem, and identity, using an arts-based action research methodology through the creation, production, and dissemination of practical artistic projects (project-based research), and using women from shelters who are victims of domestic violence as a case study
Peritoneal and hepatic hydatid disease causing major bile duct destruction
Echinococcosis is endemic in Mediterranean regions and is found primarily in the liver. Biliary fistula is a common complication, but major biliary duct involvement is very rare, and occurs in 0.47% of patients with hepatic hydatid disease. Cyst rupture causing secondary peritoneal hydatidosis is a rare but serious complication. We report the case of a 27-year-old man with multiple peritoneal and hepatic hydatid cysts. The patient came to our attention with cholestatic jaundice. Imaging exams showed numerous peritoneal cysts and massive hydatid disease of the liver, which involved the hepatic confluence, with destruction of the right hepatic duct and fistula formation to the left hepatic duct. The patient was treated with pre-operative albendazole therapy and radical surgery, which consisted of resection of all peritoneal cysts and extended right hepatectomy with biliary reconstruction. No recurrence was seen on CT investigations on the 12th month following surgery. Radical surgical approach remains the treatment of choice
Collaboration networks from a large CV database: dynamics, topology and bonus impact
Understanding the dynamics of research production and collaboration may
reveal better strategies for scientific careers, academic institutions and
funding agencies. Here we propose the use of a large and multidisciplinar
database of scientific curricula in Brazil, namely, the Lattes Platform, to
study patterns of scientific production and collaboration. In this database,
detailed information about publications and researchers are made available by
themselves so that coauthorship is unambiguous and individuals can be evaluated
by scientific productivity, geographical location and field of expertise. Our
results show that the collaboration network is growing exponentially for the
last three decades, with a distribution of number of collaborators per
researcher that approaches a power-law as the network gets older. Moreover,
both the distributions of number of collaborators and production per researcher
obey power-law behaviors, regardless of the geographical location or field,
suggesting that the same universal mechanism might be responsible for network
growth and productivity.We also show that the collaboration network under
investigation displays a typical assortative mixing behavior, where teeming
researchers (i.e., with high degree) tend to collaborate with others alike.
Finally, our analysis reveals that the distinctive collaboration profile of
researchers awarded with governmental scholarships suggests a strong bonus
impact on their productivity.Comment: 8 pages, 8 figure
Lorentz-violating extension of scalar QED at finite temperature
In this work, we calculate the one-loop self-energy corrections to the gauge
field in scalar electrodynamics modified by Lorentz-violating terms within the
framework of the standard model extension (SME). We focus on both -even
and -odd contributions. The kinetic part of the scalar sector contains a
-even symmetric Lorentz-breaking tensor, and the interaction terms include
a vector contracted with the usual covariant derivative in a gauge-invariant
manner. We computed the one-loop radiative corrections using dimensional
regularization for both the -even and -odd cases. Additionally, we
employed the Matsubara formalism to account for finite temperature effects.Comment: 7 pages, 2 figures, matches published version in PL
Self-Forces on Electric and Magnetic Linear Sources in the Space-Time of a Cosmic String
In this paper we calculate the magnetic and electric self-forces, induced by
the conical structure of a cosmic string space-time, on a long straight wire
which presents either a constant current or a linear charge density. We also
show how these self-forces are related by a Lorentz tranformation and, in this
way, explain what two different inertial observers detect in their respective
frames.Comment: 10 pages, LaTeX, to be published in Phys. Rev. D
Relativistic Landau quantization for a neutral particle
In this contribution we study the Landau levels arising within the
relativistic quantum dynamics of a neutral particle which possesses a permanent
magnetic dipole moment interacting with an external electric field. We consider
the Aharonov-Casher coupling of magnetic dipole to the electric field to
investigate an an analog of Landau quantization in this system and solve the
Dirac equation for two different field configurations. The eigenfunctions and
eigenvalues of Hamiltonian in both cases are obtained.Comment: 9 pages, no figure
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