355 research outputs found
Advantages in using new technologies (ITC) for teaching and learning prepositional verbs in Spanish. Some activities for Spanish learners.
El presente trabajo se centra en una serie de actividades dirigidas a estudiantes de español como lengua extranjera de nivel B2 del Marco Común de Referencia Europeo para las lenguas (MCER) y del Plan Curricular del Instituto Cervantes (PCIC). Se analizan, en primer lugar, las ventajas que aportan las TIC para llevar a cabo la didáctica de un aspecto gramatical en concreto, la combinatoria , favoreciendo el aprendizaje colaborativo de los alumnos de E/LE. Por otra parte, pretendemos ofrecer tanto a docentes como a investigadores algunas pautas de tipo práctico para que puedan integrar las tecnologías 3.0 a las clases de idiomas convencionales.In this article we present some activities for Spanish learners (B2 level) centered to Spanish prepositional verbs. We analyze, in particular, advantages in using new technologies (ITC) for teaching and learning Spanish as a Foreign Language. We deal with collaborative learning methodologies mediating by digital technologies. Our aim is to show how we can teach verb and prepositions as a lexical unit with ITC
Proposal for a Supersymmetric Standard Model
The fact that neutrinos are massive suggests that the minimal supersymmetric
standard model (MSSM) might be extended in order to include three gauge-singlet
neutrino superfields with Yukawa couplings of the type . We
propose to use these superfields to solve the problem of the MSSM without
having to introduce an extra singlet superfield as in the case of the
next-to-MSSM (NMSSM). In particular, terms of the type in the
superpotential may carry out this task spontaneously through sneutrino vacuum
expectation values. In addition, terms of the type avoid the
presence of axions and generate effective Majorana masses for neutrinos at the
electroweak scale. On the other hand, these terms break lepton number and
R-parity explicitly implying that the phenomenology of this model is very
different from the one of the MSSM or NMSSM. For example, the usual neutralinos
are now mixed with the neutrinos. For Dirac masses of the latter of order
GeV, eigenvalues reproducing the correct scale of neutrino masses are
obtained.Comment: 9 pages, latex, title modified. Final version published in PR
Low-Cost Flight Test Telemetry Systems
A traditional Flight Test Telemetry system is based on a peer-to-peer architecture where a system of antennae enables a signal to be transmitted between an aircraft and a receiving ground station. Said system generally requires costly infrastructures on the ground and complex antennae components to be installed on the aircraft. Newer approaches may use satellite communications, but the available spectrum is being encroached by commercial wireless networks such as mobile broadband. Given the very fast growth that the mobile broadband technology is experiencing, it might be feasible to utilize this ever-expanding new infrastructure as a low-cost alternative to conventional flight test telemetry systems. This thesis work will research on the feasibility and performance of the commercial mobile data networks when employed on-board a small aircraft such as a Cessna 172 for telemetry purposes
Right-handed neutrinos, domain walls and tadpoles in the superstring inspired SSM
We discuss the special role of right-handed neutrinos in the SSM for
solving the - and -problems, simultaneously avoiding the potential
domain wall and tadpole problems, In particular, embedding the SSM in
the framework of superstrings implies that not all gauge invariant terms are
necessarily present in the superpotential, and thus there is more flexibility
to allow only those that avoid the domain wall and tadpole problems to be
present. These can be non-renormalizable terms of dimension 4 or terms of
higher dimensions. In addition, non-perturbative effects can also solve both
problems. We discuss another implication of the superstring inspired
SSM, since the right-handed neutrino is expected to have extra
charges at high energies. In this case, the cubic right-handed neutrino terms
in the superpotential, helpful for generating Majorana masses and solving
domain wall and tadpole problems, can arise through a variety of stringy
mechanisms.Comment: 23 pages, 2 figure
On a reinterpretation of the Higgs field in supersymmetry and a proposal for new quarks
In the framework of supersymmetry, when R-parity is violated the Higgs doublet superfield Hd can be interpreted as another doublet of leptons, since all of them have the same quantum numbers. Thus Higgs scalars are sleptons and Higgsinos are leptons. We argue that this interpretation can be extended to the second Higgs doublet superfield Hu, when right-handed neutrinos are assumed to exist. As a consequence, we advocate that this is the minimal construction where the two Higgs doublets can be interpreted in a natural way as a fourth family of lepton superfields, and that this is more satisfactory than the usual situation in supersymmetry where the Higgses are ‘disconnected’ from the rest of the matter and do not have a three-fold replication. On the other hand, in analogy with the first three families where for each lepton representation there is a quark counterpart, we propose a possible extension of this minimal model including a vector-like quark doublet representation as part of the fourth family. We also discuss the phenomenology of the associated new quarksThe work of D.E. López-Fogliani was supported by the Argentinian CONICET. He acknowledges the hospitality of the IFT during whose stay this work was started. The work of C. Muñoz was supported in part by the Programme SEV-2012-0249 ‘Centro de Excelencia Severo Ochoa’. We also acknowledge the support of the Spanish grant FPA2015-65929-P (MINECO/FEDER, UE), and MINECO’s Consolider-Ingenio 2010 Programme under grant MultiDark CSD2009-0006
Hunting physics beyond the standard model with unusual and decays
Nonstandard on-shell decays of and bosons are possible within the
framework of extended supersymmetric models, i.e., with singlet states and/or
new couplings compared to the minimal supersymmetric standard model. These
modes are typically encountered in regions of the parameter space with light
singlet-like scalars, pseudoscalars, and neutralinos. In this letter we
emphasize how these states can lead to novel signals at colliders from - or
-boson decays with prompt or displaced multileptons/tau
jets/jets/photons in the final states. These new modes would give distinct
evidence of new physics even when direct searches remain unsuccessful. We
discuss the possibilities of probing these new signals using the existing LHC
run-I data set. We also address the same in the context of the LHC run-II, as
well as for the future colliders. We exemplify our observations with the "
from " supersymmetric standard model, where three generations of
right-handed neutrino superfields are used to solve shortcomings of the minimal
supersymmetric standard model. We also extend our discussion for other variants
of supersymmetric models that can accommodate similar signatures.Comment: New discussions and references added, 8 pages, 1 figure, matches with
the published version in Phys. Rev.
Valproate in Conversion Disorder: A Case Report
Few data are in literature about the pharmacological treatment of conversion disorder and there are not any studies about the use of Valproate extended release (ER) in treating conversion disorder. In this article, we are reporting a case of an Italian woman with a diagnosis of conversion disorder treated effectively and quickly by Valproate ER
Probing the " from " supersymmetric standard model with displaced multileptons from the decay of a Higgs boson at the LHC
The " from " supersymmetric standard model (SSM) cures the
-problem and concurrently reproduces measured neutrino data by using a set
of usual right-handed neutrino superfields. Recently, the LHC has revealed the
first scalar boson which naturally makes it tempting to test SSM in the
light of this new discovery. We show that this new scalar while decaying to a
pair of unstable long-lived neutralinos, can lead to a distinct signal with
non-prompt multileptons. With concomitant collider analysis we show that this
signal provides an unmistakable signature of the model, pronounced with light
neutralinos. Evidence of this signal is well envisaged with sophisticated
displaced vertex analysis, which deserves experimental attention.Comment: 5 pages, 3 figures, title, text, abstract and references modifie
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