16 research outputs found
Back reaction in the formation of a straight cosmic string
A simple model for the formation of a straight cosmic string, wiggly or
unperturbed is considered. The gravitational field of such string is computed
in the linear approximation. The vacuum expectation value of the stress tensor
of a massless scalar quantum field coupled to the string gravitational field is
computed to the one loop order. Finally, the back-reaction effect on the
gravitational field of the string is obtained by solving perturbatively the
semiclassical Einstein's equations.Comment: 29 pages, LaTeX, no figures. A postcript version can be obtained from
anonymous ftp at ftp://ftp.ifae.es/preprint.f
Organizational knowledge: Ethics and the importance of trust.
The aim of this paper is to grasp the ethical dilemmas that arise into
organizational knowledge and the importance of trust for diminishing these dilemmas.
Therefore, it focuses three key issues: knowledge management (concept;
and, schools of thought); knowledge flowing models versus ethics (mental
models; the Socialization, Externalization, Combination, Internalization (SECI)
model; and, Fiske’s relational model); and finally, the importance of trust as a
possible answer. Plus, this paper suggests that the previous models only focus
knowledge as continuum process and the result of this process omits ethical and
moral dilemmas (obligation to share, personal property, personal worth, autonomy,
dignity, privacy, etc.). These ethical dilemmas clearly weaken a knowledge
management project, and how trust is a reliable answer. The absence of
empirical work should be considered a limitation of this paper; however, does
not diminish the importance for this debate