DSpace Coleção:https://repositorio.ufrn.br/handle/123456789/120352024-03-19T01:30:37Z2024-03-19T01:30:37ZAnálise espaço-temporal da frequência de homicídios nos bairros de Natal-RN no período de 2011 a 2021Ribeiro, Matheus Wingles Alveshttps://repositorio.ufrn.br/handle/123456789/571972024-01-05T20:20:36Z2023-11-22T00:00:00ZTítulo: Análise espaço-temporal da frequência de homicídios nos bairros de Natal-RN no período de 2011 a 2021
Autor(es): Ribeiro, Matheus Wingles Alves
Abstract: In this dissertation, a retrospective study is conducted on the number of Intentional
Lethal Violent Crimes in the neighborhoods of Natal from 2011 to 2021. Specifically, it
investigates whether there is a causal relationship between the number of intentional
homicides and a series of factors, such as demographic, socioeconomic, geographical
location, and infrastructure investment characteristics in the neighborhoods. Additionally,
it examines whether the year 2020, during which mobility restrictions were imposed in
the city, influenced the occurrence of homicides, as well as whether there were significant
dierences in the frequency of this event according to the dierent administrations of
the state of Rio Grande do Norte that occurred during the study period. The statistical
method used to test the research hypotheses is the space-time model for area data, which
is structured with Conditional Autoregressive Priors of the space-time components. This
model uses the Bayesian paradigm, and the estimation of its parameters is carried out
through the Markov Chain Monte Carlo method. It was found that factors such as Average
Nominal Income, Illiteracy rate, Population Density, and the number of Enterprises in
the region were significant for the increase in these crimes. It was also observed that,
during the analysis of the state government administrations over the study period, the
last administration had a positive impact on the reduction of homicides. Furthermore,
in comparison with the North Zone, both the East Zone and the South Zone recorded a
significant reduction in homicide rates, unlike what was observed in the West Zone.2023-11-22T00:00:00ZZ2-graduações da álgebra de Grassmann: construção, PI-equivalência e isomorfismosSilva, Ana Beatriz Gomes dahttps://repositorio.ufrn.br/handle/123456789/556272023-12-05T23:31:57Z2023-08-30T00:00:00ZTítulo: Z2-graduações da álgebra de Grassmann: construção, PI-equivalência e isomorfismos
Autor(es): Silva, Ana Beatriz Gomes da
Abstract: The focus of our dissertation is to develope a study on the Z2-gradings of the infinitedimensional Grassmann algebra E. The homogeneous Z2-gradings and their Z2-graded identities are already well known in the literature, see (VINCENZO; SILVA, 2009), (CENTRONE, 2011) e (GONÇALVES, 2018). Nevertheless, the construction of nonhomogeneous Z2-gradings demands the use of the duality between these structures and
automorphisms of order ≤ 2 acting on E. Through this, we will study the non-homogeneous
Z2-gradings, producing results on their construction. Next, we will investigate under what
conditions a non-homogeneous Z2-grading is isomorphic to the canonical Z2-grading of
E. Finally, we will provide a Z2-grading on E in which there is no non-zero element
of the space L homogeneous, giving a negative answer to the conjecture presented in
(GUIMARÃES; KOSHLUKOV, 2023).2023-08-30T00:00:00ZUm guia para planejamento e análise de experimentos na área educacionalApolinario, Carla de Moraeshttps://repositorio.ufrn.br/handle/123456789/550552023-11-03T15:28:18Z2023-06-27T00:00:00ZTítulo: Um guia para planejamento e análise de experimentos na área educacional
Autor(es): Apolinario, Carla de Moraes
Abstract: Education in Brazil has been presenting challenges challenges of various kinds. During the 20th century the main educational challenge was access to schools and combating the high rate of illiteracy. The construction of public schools as a way of facilitating access to basic education led to other challenges that persist to the present day, such as the low quality of the education offered, a constant and relevant theme throughout the world, since the quality of education is a critical issue for the development of a
country. Several studies have been carried out with the aim of identifying ways to improve teaching and learning and one way to identify best practices is to conduct a statistical experiment as a way to establish a causal relationship between different factors and students’ academic performance. Furthermore, these studies make it possible to evaluate
the impact of public policies and government programs aimed at improving education, helping to direct resources more efficiently and effectively. As important as performing these interventions is conducting them properly so that it is possible to obtain reliable data. With the wide variety of existing statistical techniques, it is common for researchers from other areas to innapropriately use of experimental statistics when conducting an intervention. In this work, a literature review is carried out as a way of mapping studies that use experimental statistics in the educational context, in order to identify the difficulties found by researchers, as well as good practices carried out, in addition to carrying a case study to identify possible practice difficulties that were not noted in the review. This work aims to disseminate the correct use of experimental statistics techniques in a clear, objective and understandable way for researchers from other areas who are not familiar with that subject. To achieve this goal, an accessible and simplified language is adopted when explaining complex concepts, using concrete examples and graphics that help to visualize the statistical concepts. Moreover, the importance of using controlled experiments and randomization are emphasized, which allow inferences followed up on the
basis of quantitative evidence. Additionally, as part of the proposed work, a guide will be developed that will present the steps and important points to plan an experiment properly, guaranteeing the validity and reliability of the results obtained. This guide will include guidance on designing the experiment, choosing sample size, selecting experimental and control groups, randomization, selecting appropriate statistical tests, and other aspects
crucial to successful experimental research. It is hoped that this guide will provide a useful
reference for researchers from other fields who wish to use experimental statistics correctly
and effectively in their research2023-06-27T00:00:00ZUma nova abordagem topológica para métrica intervalarSilva, Jefferson Henrique dahttps://repositorio.ufrn.br/handle/123456789/526452023-06-07T22:09:31Z2023-03-28T00:00:00ZTítulo: Uma nova abordagem topológica para métrica intervalar
Autor(es): Silva, Jefferson Henrique da2023-03-28T00:00:00Z