[en] The primary investigation objective of this Master?s End Project aims to show the behaviour of homicides in Brazilian state of Cear?, in its relation to the implementation of the so called public policy Programa Ronda do Quarteir?o. The goal is to analyse if this public policy, which falls under the concept of community policing, has had any effect in the mentioned indicator. This concept is mainly characterized for proposing a combined participation of police and society aiming to ensure the public security in various communities. First of all, we will carry out a theoretical and chronological overview in which rest the fundamental ideas of multiple modern policing systems. We will stress in the concept of community policing showing its main characteristics and explaining its scope and its possible limitations and difficulties. To achieve this, we will relate this data with the current concept of traditional and professional public policing in other Brazilian states. Then we will describe the reforms applied to the public security in Brazil after the Constitution of 1988, and how this allowed the appearing of the first communitarian policial systems in this country. To supplement the explained theoretical foundations, we will analyse the evolution of public security in the state of Cear? in period referred as mudan?as and thanks to this analyse we will show the operated policies in that state in terms of public security. With this we will reach the moment of the Programa Ronda do Quarteir?o, created by the Governor Cid Ferreira Gomes in 2007. Finally, we will answer the main question of this investigation project through series of statistical test. In this case, it will consist in two Hypothesis Test (that relay on the T concept of Student) thanks to which we will be allowed to compare the municipalities of the state of Cear? according to two variables: the yearly average homicides rate and the municipalities in which it has been ?and has been not? implemented the Programa Ronda do Quarteir?o. Thus, a rise of homicides rate and an uneven behaviour in the variable Ronda is observed in the studied period. All of this points that it doesn?t exist any statiscally significant difference in relation to the average homicides rate in those municipalities in which this public policy has been implemented, in comparison with those in which it has not. In short, the obtained results show that the Programa Ronda do Quarteir?o had not any effect in the behaviour of homicides, at least in relation with its reduction

[es] El presente Trabajo Final de M?ster (TFM) plantea como objetivo principal de investigaci?n, mostrar el comportamiento de los homicidios, en el estado brasile?o de Cear?, en relaci?n con la implementaci?n de la pol?tica p?blica denominada, Programa Ronda do Quarteir?o. Se trata de observar si el programa, enmarcado dentro del modelo de polic?a comunitaria, tuvo influencia en dicho indicador. Este modelo se caracteriza principalmente, por plantear una participaci?n conjunta de polic?a y sociedad para el mantenimiento de la seguridad p?blica de las diferentes comunidades. Para comenzar, se realizar? un recorrido te?rico-cronol?gico, sobre el cual apoyar las ideas fundamentales de los diferentes sistemas policiales modernos, desarrollando con mayor ?nfasis el denominado modelo de polic?a comunitaria, exponiendo, tanto sus caracter?sticas principales, como su alcance y posibles limitaciones u obst?culos. Todo ello puesto en relaci?n con el modelo tradicional-profesional vigente y m?s extendido en los diferentes estados brasile?os. A continuaci?n, se describir?n las reformas que ha tenido la seguridad p?blica en Brasil tras la Constituci?n de 1988 y como esto permiti? la aparici?n de los primeros sistemas policiales comunitarios en dicho pa?s. Para completar la fundamentaci?n te?rica, se repasar? la evoluci?n de la seguridad p?blica en el estado de Cear?, a trav?s del periodo denominado de mudan?as, con la que mostrar las pol?ticas llevadas a cabo en dicho estado en el ?rea de la seguridad p?blica. Todo ello para llegar al momento de la creaci?n del Programa Ronda do Quarteir?o por el gobernador Cid Ferreira Gomes en el a?o 2007. Finalmente, se resolver? la pregunta de investigaci?n de este trabajo a trav?s de una serie de pruebas estad?sticas. En este caso, dos Test de Hip?tesis basados en el modelo T de Student, con el que poder comparar los municipios del estado de Cear? en funci?n de dos variables, la tasa media de los homicidios de cada a?o y los municipios con y sin implementaci?n del Programa Ronda do Quarteir?o. De este modo, tras el citado an?lisis, se observa un aumento de la tasa de homicidios, as? como un comportamiento desigual de la variable Ronda a lo largo del periodo estudiado. Todo ello indica que no existen diferencias estad?sticamente significativas respecto a la media de los homicidios en aquellos municipios que aplicaron dicha pol?tica p?blica y los que no lo hicieron. En definitiva, los resultados obtenidos muestran que el Programa Ronda do Quarteir?o no tuvo ning?n efecto en el comportamiento de los homicidios, al menos en los correspondiente a la reducci?n de los mismos.