11,515 research outputs found
Sustaining Economic Development by Reforming Basic Institutions through Community Participation
It is universally accepted and advocated that without community involvement and participation, development initiatives either in the economic or social sector, have little chances of success/sustainability, especially at the grassroots level, where the majority of the country’s population lives [AKRSP (1984, 1999); FAO (1989); Khan et al. (1984) and Mustafa (1998)]. In this connection the concept and approaches of community development have been tested in Northern Areas of Pakistan and the principles and experiences have been replicated in some other parts of the country by Non Government Organisations (NGOs), different national and international government projects and programmes [Mustafa and Grunewald (1996); NRMP (1993) and NRSP (1995)]. The need for conceptualising a realistic framework for collaboration between government/other development agencies and community organisations engaged in pursuit of both social and economic goals is imperative for an equitable and sustainable development because when it comes to community involvement, the two sectors cannot be divorced from each other [Khan (1999) and Reid and Khan (1996)]. The objectives of the paper are: to highlight the need and the importance of grassroots non-government institutions based on participatory community development approaches; to analyse the role of community participation models in the country and to recommend strategies for an effective linkage between grassroots non-government organisations and basic-services-driven government institutes for effective and sustainable development; also to review and recommend primitive structural changes in basic institutions as development partners.
Time Crystals from Minimum Time Uncertainty
Motivated by the Generalized Uncertainty Principle, covariance, and a minimum
measurable time, we propose a deformation of the Heisenberg algebra and show
that this leads to corrections to all quantum mechanical systems. We also
demonstrate that such a deformation implies a discrete spectrum for time. In
other words, time behaves like a crystal. As an application of our formalism,
we analyze the effect of such a deformation on the rate of spontaneous emission
in a hydrogen atom.Comment: 11 pages, to appear in Eur. Phys. J.
Remnants of Black Rings from Gravity's Rainbow
In this paper, we investigate a spinning black ring and a charged black ring
in the context of gravity's rainbow. By incorporating rainbow functions
proposed by Amelino-Camelia, et al. in [arXiv:hep-th/9605211,
arXiv:0806.0339v2] in the metric of the black rings, a considerable
modification happens to their thermodynamical properties. We calculate
corrections to the temperature, entropy and heat capacity of the black rings.
These calculations demonstrate that the behavior of Hawking radiation changes
considerably near the Planck scale in gravity's rainbow, where it is shown that
black rings do not evaporate completely and a remnant is left as the black
rings evaporate down to Planck scale.Comment: 14 pages, 6 figure
Remnant for all Black Objects due to Gravity's Rainbow
We argue that a remnant is formed for all black objects in gravity's rainbow.
This will be based on the observation that a remnant depends critically on the
structure of the rainbow functions, and this dependence is a model independent
phenomena. We thus propose general relations for the modified temperature and
entropy of all black objects in gravity's rainbow. We explicitly check this to
be the case for Kerr, Kerr-Newman-dS, charged-AdS, and higher dimensional
Kerr-AdS black holes. We also try to argue that a remnant should form for black
Saturn in gravity's rainbow. This work extends our previous results on remnants
of Schwarzschild black holes [ arXiv:1402.5320] and black rings
[arXiv:1409.5745].Comment: 21 pages, 13 figures, Accepted in Nucl.Phys.
K\"ahlerian Effective Potentials for Chern-Simons-Matter Theories
In this paper, we will calculate the effective potential for a theory of
multiple M2-branes. As the theory of multiple M2-branes can be described by a
Chern-Simons-matter theory, this will be done by calculating the K\"ahlerian
effective potential for a Chern-Simons-matter theory. This calculation will be
performed in superspace formalism. We will initially study an
Abelian Chern-Simons-matter theory, and then generalize those results to the
full non-Abelian Chern-Simons-matter theory. We will obtain explicit
expressions for the superpropagators for this theory. These superpropagators
will be used to calculate the one-loop effective potential.Comment: 15 page
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