NUNES, Alemay Soares. As permutações caóticas, o problema de Lucas e a teoria dos permanentes . 2015. 77 f. Dissertação (Mestrado em Matemática em Rede Nacional) – Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2015. / Submitted by Erivan Almeida (eneiro@bol.com.br) on 2015-11-23T16:36:58Z No. of bitstreams: 1 2015_dis_asnunes.pdf: 1578418 bytes, checksum: f79764af9a15912c1a014a9a4a4b1b0b (MD5) / Approved for entry into archive by Rocilda Sales(rocilda@ufc.br) on 2015-11-23T16:59:42Z (GMT) No. of bitstreams: 1 2015_dis_asnunes.pdf: 1578418 bytes, checksum: f79764af9a15912c1a014a9a4a4b1b0b (MD5) / Made available in DSpace on 2015-11-23T16:59:42Z (GMT). No. of bitstreams: 1 2015_dis_asnunes.pdf: 1578418 bytes, checksum: f79764af9a15912c1a014a9a4a4b1b0b (MD5) Previous issue date: 2015 / In this work we cover some counting techniques used to solve some classic problems in Combinatorics. We also show a link between the so called “rencontre problem”, the “ménage problem” and the permanent of a square matrix. / Neste trabalho abordamos algumas técnicas de contagem utilizadas para solucionar alguns problemas clássicos da Análise Combinatória. Mostramos também uma relação entre o problema das cartas mal endereçadas, o problema de Lucas e os permanentes de uma matriz quadrada.

In this work we cover some counting techniques used to solve some classic problems in Combinatorics. We also show a link between the so called ârencontre problemâ, the âmÃnage problemâ and the permanent of a square matrix. / Neste trabalho abordamos algumas tÃcnicas de contagem utilizadas para solucionar alguns problemas clÃssicos da AnÃlise CombinatÃria. Mostramos tambÃm uma relaÃÃo entre o problema das cartas mal endereÃadas, o problema de Lucas e os permanentes de uma matriz quadrada.

Made available in DSpace on 2014-06-11T19:27:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-12-09Bitstream added on 2014-06-13T20:47:43Z : No. of bitstreams: 1 cobra_tt_me_rcla.pdf: 485593 bytes, checksum: 107d36859b5a9c932411b3a54094c4ac (MD5) / O principal objetivo deste trabalho é apresentar conceitos básicos sobre coincidências e pontos fixos de aplicações contínuas usando como ferramentas os Lemas Combinatórios de Sperner e grau de aplicações. Apresentamos também um cálculo do número de Lefschetz de f; g : T2 ¡! T3, onde Th denota uma superfície de genus h, através da fórmula dada por Gonçalves e Oliveira em [3] / The main goal of this work is present basic concepts on coincidences and fixed points of continuous maps with Sperner’s Combinatorial Lemmas, and degree maps approaches. We also present a calculation of the Lefschetz number of f; g : T2 ¡! T3, where Th denotes surface of genus h, by using the formula given by Gonçalves and Oliveira in [3]

Citizen complaints about inappropriate use of force indicate negative police-public relations, unresponsive police services, and the unresponsiveness of police management to citizens' concerns. However, the effective delivery of key policing services depends on the performance of individual police officers. Surveillance technology can monitor and control the behavior of officers, ensuring that police officers provide high quality policing services that meet the needs of citizens. Examples of surveillance technology such as in-car cameras and CCTV can be used as an administrative tool to respond to citizen complaints by police chief executives. This research examines the effect of surveillance technology on the behavior of municipal police departments that is operationalized as the number of citizen complaints that were filed against municipal police departments. This research also examines the impact of surveillance technology on dismissed and sustained complaints by using 511 large municipal police departments in the U.S. from Law Enforcement Management and Administrative Statistics (LEMAS) 2003 dataset. Three different models are developed to evaluate the impact of in-car cameras and CCTV on the citizen complaints and their dispositions. Two ordinary least square regression (OLS) models and a Heckman selection model are used to analyze the data. The Heckman selection model is utilized to correct for selection bias in truncated data for sustained complaints after log transformation. The results suggest that the use of surveillance technology by the police is necessary, but insufficient, in reducing the number of complaints. The finding suggests that videotaped evidence, recorded by surveillance technology, increased the number of convictions of accused officers in municipal police departments. The analysis also suggests that municipal police departments that used CCTV only in 2003 received a higher number of citizen complaints, in comparison to municipal police departments without CCTV, both in 2000 and 2003. No evidence was found to indicate that surveillance technology has a positive impact on the percentage of dismissed complaints.

Civil unrest in the1960s pitted Black citizens and police officers against each other (Kerner Commission, 1968). The Kerner Commission examined race relations and recommended the hiring of more Black officers to patrol Black neighborhoods. Recent shooting deaths of unarmed Black males primarily by White officers has led to renewed calls for police reform (Scholsser, Cha-Jua, Valgoi & Neville, 2015). This quantitative secondary analysis study utilizes data from the 2013 LEMAS survey to compare local police departments from three states (N=184) to examine whether police departments with a Black chief and/or a higher rate of Black officers reported more participation in community oriented policing activities than police departments led by Whites. The study’s hypothesis is that local police departments led by a Black chief and departments with a high rate of Black officers will report greater participation in community oriented policing activities. Descriptive data along with results from Pearson’s correlation, ANOVA and multiple regression analysis indicate there are some benefits to appointing Blacks as police chief along with hiring more Black officers. In this study, the race of the chief had a positive but not significant impact on the number of reported COP activities. The presence of more Black officers was positively correlated at a significant level with reports of higher rates of COP activities.

[pt] Esse trabalho visa demonstrar os lemas de Sperner e aplicá-los nasdemonstrações do teorema de Monsky em Q2 e do teorema do ponto fixo deBrouwer em R2. Além disso, relatamos como esses lemas foram abordados com alunos da educação básica tendo como ferramenta educacional jogos de tabuleiro. / [en] This work aims to prove the Sperner s Lemmas and to apply them in proving the Monsky s Theorem in Q2 and the Brouwer fixed point Theorem in R2. Moreover, we report how these lemmas were addressed with students in basic education using board games as educational tools.