the fringes areas interposed between metropolis and territorial ecosystems constitute a new sort of geography of urban sprawl. the difference between urban areas and their surroundings is at present unrecognisable.from this new context, that represent a new life environment for a large part of human population, new perceptive dynamics and new relationships emerge. various social manifestations ...

This study presents a method for fabrication of ultrafine polymeric nanofibers as well as nano/micro particles utilizing centrifugal and electrostatic forces simultaneously. To reduce the diameter and variety of nanofibers produced from solid state polymerized PA66, a unique electrocentrifuge spinning device was utilized with a rotating nozzle and collector, while the fabrication process (spinn...

Temperature has a significant role in many actions performed on rocks. An example would be the effect of temperature on rocks in the burial of nuclear waste, geothermal energy extraction, deep oil well drilling, and fires in tunnels. In addition, due to diurnal/nocturnal as well as seasonal temperature variations, rocks undergo a process of heating and cooling. In the present work, the effect o...

We discuss a finite rectangular well as a perturbation for the infinite one with a depth λ of the former as a perturbation parameter. In particular we consider a behaviour of energy levels in the well as functions of complex λ. It is found that all the levels of the same parity are defined on infinitely sheeted Riemann surfaces which topological structures are described in details. These struct...

Restructuring  is relevant for companies that have free capital and need to expand for development purposes, as well as for companies that have relatively large problems with financial results and the relevant indicators indicate the necessary changes. Motives of the restructuring may be different, the authors put forward the following reasons: operation operational synergy, financial synergy, ...

We prove a version of the quantum de Finetti theorem: permutation-invariant quantum states are well approximated as a probabilistic mixture of multifold product states. The approximation is measured by distinguishability under measurements that are implementable by fully-one-way local operations and classical communication (LOCC). Our result strengthens Brandão and Harrow's de Finetti theorem w...