Pure injective and absolutely pure sheaves

We study two notions of purity in categories of sheaves: the categorical and the geometric. It is shown that pure injective envelopes exist in both cases under very general assumptions on the scheme. Finally we introduce the class of locally absolutely pure (quasi--coherent) sheaves, with respect to the geometrical purity, and characterize locally Noetherian closed subschemes of a projective scheme in terms of the new class.Comment: Updated version. To appear in Proc. Edinburgh Math. So

Linking community policing activities with social disorganization theory: Examples from Turkish National Police

Police departments in Turkey utilize community policing philosophy in an effort to create a social bond between police and the citizens they serve. Although Turkish National Police has a centralized organizational structure, the way community policing is implemented is not the same at every police department. Most police departments use project designs as means to create community policing programs. This study suggests implementing a community policing program by using social disorganization theory (SDT) as a theoretical framework. According to SDT, one of the major predictors of social control in a community is the level of control by the community over adolescent groups. It is argued that uncontrolled teenagers often turn into gang groups and display delinquent behaviors. Therefore, the community’s ability to supervise its teenagers is a way to stop the creation of gangs and delinquent behaviors. In explaining the linkage between social disorganization theory and different types of community policing implementations, Mardin Police Department’s project “Ideallerimizdeki yarinlar” is offered as a case study. This project enables young individuals to understand and value the importance of community involvement and hard work in creating a better future both for them and for their families

Decompositions of Complete Symmetric Directed Graphs into the Oriented Heptagons

The complete symmetric directed graph of order $v$, denoted $K_{v}^*$, is the directed graph on $v$ vertices that contains both arcs $(x,y)$ and $(y,x)$ for each pair of distinct vertices $x$ and $y$. For a given directed graph, $D$, the set of all $v$ for which $K_{v}^*$ admits a $D$-decomposition is called the spectrum of $D$. There are 10 non-isomorphic orientations of a $7$-cycle (heptagon). In this paper, we completely settled the spectrum problem for each of the oriented heptagons.Comment: 10 pages, 1 figur

How Income Inequality Threatens Democracy

The article discusses income inequality and unregulated neoliberal markets as internal threats to democracy. Based on a profound understanding of liberal democracies, the assumption that economic and political liberalism are one and the same and the latter does not need any protection against the former lead to a situation where political liberalism is being hurt, challenged and its very existence is threatened by unchecked economic liber­alism. The biggest internal - direct and indirect - threats towards democracy are stemming from unchecked unregulated neoliberalism

Models of the internal colonialism and ethnic relations: The case of Cubans and Puerto Ricans in the United States

The United States is a very good example of a multiethnic society by having large groups of people from more than eleven different ethnic origins. Some of these groups were voluntarily integrated into American society, whereas others were forced in by involuntary means. Notwithstanding the fact that they have all faced social barriers, the barriers themselves have differed significantly based on the group’s ethnic identities, cultures, social standings, and many other features. This study examines two of those ethnic groups namely the Cuban and the Puerto Rican Americans’ standing in the U.S.. To do this, the researcher utilized the internal colonialism model and Aguirre& Turner’s model of ethnic relations. Both models explain, to some extent, the situation of these minority groups in the U.S

Are teacher candidates able to use educational technologies effectively?

The present study aims at investigating the educational technology use of teacher candidates attending education faculties in Turkey in terms of NETS*T standards. The study employed 2.566 senior teacher candidates from 7 different universities in Turkey. As a result of the study, it was revealed that the teacher candidates considered themselves to have a high level of self-efficacy with respect to educational technology standards as a whole. Considering the factors, teacher candidates reported the highest level of self-efficacy for the factor of productivity and professional practices and the lowest level of f-self-efficacy for the factor of social, ethical, legal and human issues. Gender caused differences for certain factors. In addition, the department being attended was another variable that resulted in difference when the departments of the teacher candidates were taken into consideration. The present study aims at investigating the educational technology use of teacher candidates attending education faculties in Turkey in terms of NETS*T standards. The study employed 2.566 senior teacher candidates from 7 different universities in Turkey. As a result of the study, it was revealed that the teacher candidates considered themselves to have a high level of self-efficacy with respect to educational technology standards as a whole. Considering the factors, teacher candidates reported the highest level of self-efficacy for the factor of productivity and professional practices and the lowest level of f-self-efficacy for the factor of social, ethical, legal and human issues. Gender caused differences for certain factors. In addition, the department being attended was another variable that resulted in difference when the departments of the teacher candidates were taken into consideration. &nbsp