601 research outputs found
IMPORTÂNCIA DA DISCIPLINA ADMINISTRAÇÃO NOS CURSOS DE ENGENHARIA DA FURB
Este artigo tem como objetivo verificar a importância do ensino de administração nos cursos de engenharia tendo como base a formação e perfil do engenheiro requerido pela sociedade atualmente. A formação almejada é de um profissional de capacidade humanística, crítica e reflexiva elevada. Atualmente se espera do profissional de engenharia, não só o conhecimento técnico propriamente dito, pois já se passa pelo pressuposto que isso é uma condição inerente do profissional com uma boa formação, mas sim um conhecimento mais aprofundado de ciências humanas, sociais e gerenciais, sintetizando uma formação generalista. Acredita-se que para conseguir este perfil o profissional precisa ter em sua grade curricular básica, disciplinas de cunho humanístico social, que é o caso exemplificado neste artigo, as disciplinas de administração. Assim, como as demais áreas do conhecimento, o ensino de engenharia passa por uma constante busca de aperfeiçoamento com mudanças em seus currículos, para atender as necessidades atuais das novas tecnologias, demandas provenientes da sociedade e mercado de trabalho. Partindo do pressuposto que a inclusão das disciplinas de cunho de ciências humanas e sociais nas grades curriculares dos cursos de engenharia pode contribuir para dar suporte ao profissional em formação, analisou-se através de um questionário estruturado a disciplina de administração dos cursos de Engenharia Civil, Engenharia Química, Engenharia Industrial Elétrica e Engenharia de Telecomunicação da Universidade Regional de Blumenau, no segundo semestre de 2004. O questionamento principal é se o aluno percebe a importância deste tipo de disciplina na sua formação profissional. O resultado obtido é que o aluno, após ter quase a totalidade do conteúdo programado, consegue verificar esta importância, mas não consegue fazer ligações desta disciplina com outras de seu curso, ou seja a interdisciplinaridade dos conteúdos na visão do aluno não é alcançada em sua totalidade. Por outro lado, o perfil do docente é de uma pessoa capaz de transmitir sua experiência e trocá-las com os alunos, haja visto que muitos alunos já trabalham em sua futura área de atuaçã
Gametic and somatic embryogenesis through in vitro anther culture of different Citrus genotypes
Abstract: In vitro tissue culture represents a useful technique for advancing Citrus breeding and propagation. Among in vitro regeneration systems, anther culture is commonly used to produce haploids and doubled haploids for a fast-track producing homozygous lines, in comparison with the traditional self-pollination approach, which involves several generations of selfing. In addition, anthers culture can produce somatic embryos that can also be used for clonal propagation. In this study, two thermal shocks were applied to the anthers of six Citrus genotypes (two clementine and four sweet oranges), just after they were put in culture. The response obtained was different depending on the genotype: both clementines, namely Hernandina and Corsica, produced homozygous and triploid regenerants (microspore-derived embryos), whereas all of the analyzed regenerants from sweet oranges, three cultivars of Tarocco and Moro, produced heterozygous and diploid regenerants similar to the parental genotypes (somatic embryos)
Phase diagram for non-axisymmetric plasma balls
Plasma balls and rings emerge as fluid holographic duals of black holes and
black rings in the hydrodynamic/gravity correspondence for the Scherk-Schwarz
AdS system. Recently, plasma balls spinning above a critical rotation were
found to be unstable against m-lobed perturbations. In the phase diagram of
stationary solutions the threshold of the instability signals a bifurcation to
a new phase of non-axisymmetric configurations. We find explicitly this family
of solutions and represent them in the phase diagram. We discuss the
implications of our results for the gravitational system. Rotating
non-axisymmetric black holes necessarily radiate gravitational waves. We thus
emphasize that it would be important, albeit possibly out of present reach, to
have a better understanding of the hydrodynamic description of gravitational
waves and of the gravitational interaction between two bodies. We also argue
that it might well be that a non-axisymmetric m-lobed instability is also
present in Myers-Perry black holes for rotations below the recently found
ultraspinning instability.Comment: 1+22 pages, 3 figures. v2: minor corrections and improvements,
matches published versio
Constraining the mass of dark photons and axion-like particles through black-hole superradiance
Ultralight bosons and axion-like particles appear naturally in different
scenarios and could solve some long-standing puzzles. Their detection is
challenging, and all direct methods hinge on unknown couplings to the Standard
Model of particle physics. However, the universal coupling to gravity provides
model-independent signatures for these fields. We explore here the superradiant
instability of spinning black holes triggered in the presence of such fields.
The instability taps angular momentum from and limits the maximum spin of
astrophysical black holes. We compute, for the first time, the spectrum of the
most unstable modes of a massive vector (Proca) field for generic black-hole
spin and Proca mass. The observed stability of the inner disk of stellar-mass
black holes can be used to derive \emph{direct} constraints on the mass of dark
photons in the mass range . By including also higher azimuthal modes, similar
constraints apply to axion-like particles in the mass range
.
Likewise, mass and spin distributions of supermassive BHs --~as measured
through continuum fitting, K iron line, or with the future space-based
gravitational-wave detector LISA~-- imply indirect bounds in the mass range
approximately , for both axion-like particles and dark photons. Overall,
superradiance allows to explore a region of approximately orders of
magnitude in the mass of ultralight bosons
Beam Test Results of the BTeV Silicon Pixel Detector
The results of the BTeV silicon pixel detector beam test carried out at
Fermilab in 1999-2000 are reported. The pixel detector spatial resolution has
been studied as a function of track inclination, sensor bias, and readout
threshold.Comment: 8 pages of text, 8 figures, Proceedings paper of Pixel 2000:
International Workshop on Semiconductor Pixel Detectors for Particles and
X-Rays, Genova, June 5-8, 200
Performance of prototype BTeV silicon pixel detectors in a high energy pion beam
The silicon pixel vertex detector is a key element of the BTeV spectrometer.
Sensors bump-bonded to prototype front-end devices were tested in a high energy
pion beam at Fermilab. The spatial resolution and occupancies as a function of
the pion incident angle were measured for various sensor-readout combinations.
The data are compared with predictions from our Monte Carlo simulation and very
good agreement is found.Comment: 24 pages, 20 figure
Beam Test of BTeV Pixel Detectors
The silicon pixel vertex detector is one of the key elements of the BTeV
spectrometer. Detector prototypes were tested in a beam at Fermilab. We report
here on the measured spatial resolution as a function of the incident angles
for different sensor-readout electronics combinations. We compare the results
with predictions from our Monte Carlo simulation.Comment: 7 pages, 5 figures, Invited talk given by J.C. Wang at "Vertex 2000,
9th International Workshop on Vertex Detectors", Michigan, Sept 10-15, 2000.
To be published in NIM
The LHCb experiment control system : on the path to full automation
http://accelconf.web.cern.ch/AccelConf/icalepcs2011/papers/mobaust06.pdfInternational audienceThe experiment control system is in charge of the configuration, control and monitoring of the different subdetectors and of all areas of the online system. The building blocks of the control system are based on the PVSS SCADA System complemented by a control Framework developed in common for the 4 LHC experiments. This framework includes an "expert system" like tool called SMI++ which is used for the system automation. The experiment's operations are now almost completely automated, driven by a top-level object called Big-Brother, which pilots all the experiment's standard procedures and the most common error-recovery procedures. The architecture, tools and mechanisms used for the implementation as well as some operational examples will be described
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