A study of a relativistic quark-diquark model for the nucleon

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Asymmetrical Bloch branes and the hierarchy problem

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Introdução à gravitação de Brans-Dicke

The cosmological standard model needs a deep improvement when compared to recent observational data and also when contrasted with a broad theorical context. Al- ternative theories to General Relativity are possible candidates to reach the expectation Physics of Elementary Particles and Gravitation. Scalar-tensor theories seem to reappear from the ashes of the old work by Jordan corresponding appropriately low power limits of unifying theories. Being the Brans Dicke theory a scalar tensor is conducted a comprehensive study starting from its rst motivations to it s current one it is re flections

Efeito do treinamento com pesos nos distúrbios do sono e na qualidade de vida de pacientes com demência de Alzheimer

The Alzheimer's dementia (AD) is the most prevalent form of dementia in the elderly. Among the harmful changes arising from the DA, there may be sleep disturbance and impaired quality of life. Physical activity is an important non-pharmacological feature that would provide positive effects for the treatment of disease. However, there are still few studies that clarify the effects of resistance training in this population. Thus, the present study has as objective analyzes the effects of the resistance training in sleep disturbance and quality of life of patients with AD. Participated in this study 22 patients with clinical diagnosis of AD divided into two groups: Training Group (TG) and Social Interaction Group (SIG). The subjects of TG underwent a resistance training protocol, appropriate to the individual conditions, during three days no consecutive in the week, with duration of 60 minutes each session, for 16 weeks. The SIG won't participate in any systematized physical activity, but they realized other activities, such as reading, poetry, hiking and painting, among others. This protocol also was realized three times in week for 16 weeks, with duration of 60 minutes each session. Both groups were assessed at the beginning of the program and after 16 weeks. For the assessment of sleep disturbance was used the Mini Sleep Questionnaire and to assess of quality of life was used the Scale for Assessment of Quality of Life in Alzheimer's disease (QL), versions: patient, caregiver, family and the final score. Due to the scalar nature of the data and small sample, all variables were analyzed by nonparametric statistics. The U-Mann Whitney test, Wilcoxon test and Spearman correlation test was used, except for the Modified Baecke... (Complete abstract click electronic access below)

Bit-parallel coprocessor for standard ECC-GF(2m) on FPGA

This paper presents the design of a high-speed coprocessor for Elliptic Curve Cryptography over binary Galois Field (ECC- GF(2m)). The purpose of our coprocessor is to accelerate the scalar multiplication performed over elliptic curve points represented by affine coordinates in polynomial basis. Our method consists of using elliptic curve parameters over GF(2163) in accordance with international security requirements to implement a bit-parallel coprocessor on field-programmable gate-array (FPGA). Our coprocessor performs modular inversion by using a process based on the Stein's algorithm. Results are presented and compared to results of other related works. We conclude that our coprocessor is suitable for comparing with any other ECC-hardware proposal, since its speed is comparable to projective coordinate designs.

Inclusões Dinâmicas em Escalas Temporais: Existência de Soluções sob a Hipótese de Semicontinuidade Inferior

In this paper we consider the problem of differential inclusion in time scales whose vector field is a multifunction, that is, a function that maps points to sets. It is provided conditions of existence without requiring compactness of the vector field; it is required that the vector field is closed, convex, and lower semicontinuous. In previous work in literature, it is required that the field is either scalar or compact, convex, and has closed graph.

Um estudo sobre teorias de dimensões extras: modelos de branas geradas por campos escalares

In this work we study extra dimensional theories, taking emphasis in braneworld models generated by real scalar fields. Firstly, we revise the Randall-Sundrum models and we discuss about some thick braneworld scenarios already considered in the literature. We introduce a new thick brane model in order to address the Standard Model hierarchy problem. Furthermore, we show that there exists a class of scalar fields models which are very interesting for analytical studies of thick brane scenarios. Finally, we analyze the braneworld consistency conditions in the context of f(R) and Brans-Dicke gravities, where we show that it is possible to evade a no-go theorem regarding thick brane scenarios

Aspectos quânticos e clássicos da instabilidade de campos fundamentais em espaços-tempos astrofísicos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Soluções do tipo vórtice em um modelo de Maxwell-Chern-Simons-Higgs com campos de Gauge distintos

Pós-graduação em Física - FEG

Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at root s=8 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at √s=7 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Search for monotop signatures in proton-proton collisions at root s=8 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Measurements of jet multiplicity and differential production cross sections of Z plus jets events in proton-proton collisions at root s=7 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at root s=8 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

From quantum to classical instability in relativistic stars

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)