This work presents the findings of different disciplines, methodologies and fields of action of social scientists, in which an intra and extra-disciplinary dialogue is established on coexistence and prosociality.For this reason, the compilation includes complementary references in methods, experiments, correlations, studies of social networks, etc.; concepts, verbiage, executive functions, environmental conditions, cultural aspects; and units of analysis, for example, individual, culture, groups, texts, etc. The chapters present research results carried out in specialized settings both at university and in socially situated contexts. This book is in line with the scientific agenda and the national current challenges such as the educational impacts of the conflict as regards the post-peace agreement with the FARC-EP; the group dynamics of the groups of victims; the conflict associated with urban life, the physical violence against women; the fulfillment of education goals for sustainable development and local governance, among others. Each chapter presents specific recommendations on the findings for scientists and professionals with social interests, as well as open theoretical discussions and future studies. This wealth of scientific and professional voices highlights the central role of research centers, in terms of the type and quality of research and professional performance for the construction of peace culture in Colombia.

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This thesis considers an investor who can distribute wealth between two assets , one with deterministic rate of growth (eg. bank deposit account) , the other with growth governed by a Brownian motion with drift (eg. equity share) . Transfers between these holdings incur proportional transaction costs . The investor may consume continuously and costlessly from the bank , and requires a consumption and investment strategy which maximises total discounted utility of consumption over an infinite horizon .For a large class of utility functions , it is proved that maximum utility is achieved by a strategy-which confines the investor's portfolio to a certain wedge-shaped region in the portfolio plane, by minimal trading, and allows consumption at a rate depending at any time on the current state of the portfolio .Moreover it is shown that the optimal strategy does not lead to bankruptcy in finite time.The problem is treated rigorously as a reflected diffusion process, and the existence and uniqueness of the optimally-controlled wealth process are demonstrated.

SUMMARY A general class of non‐diffusion stochastic models is introduced with a view to providing a framework for studying optimization problems arising in queueing systems, inventory theory, resource allocation and other areas. The corresponding stochastic processes are Markov processes consisting of a mixture of deterministic motion and random jumps. Stochastic calculus for these processes is developed and a complete characterization of the extended generator is given; this is the main technical result of the paper. The relevance of the extended generator concept in applied problems is discussed and some recent results on optimal control of piecewise‐deterministic processes are described.

Two experiments examined the possibility that perspective taking leads observers to create cognitive representation of others that substantially overlap with the observers' own self-representations. In Experiment 1 observers receiving role-taking instructions were more likely to ascribe traits to a novel target that they (observers) had earlier indicated were self-descriptive. This pattern was most pronounced, however for positively valenced traits. In Experiment 2 some participants received role-taking instructions but were also given a distracting memory task. In the absence of this task, role taking again produced greater overlap--primarily for positive traits--between self- and target representations. In the presence of the memory task, the degree of self-target overlap was significantly reduced for all traits, regardless of valence. Possible explanations for these findings are discussed.