22,322 research outputs found
Planning the cultural quarter in Birmingham's Eastside
Cultural planning and the development of cultural quarters has become a new orthodoxy in the revitalization of inner city industrial districts, yet this orthodoxy is now widely
questioned as to whether it delivers on its promises. In Birmingham UK, the aim to create a new cultural quarter in the industrial inner city area of Eastside represents a unique opportunity for the city to examine and learn from past lessons of the "cultural turn" in urban policy. The article examines these lessons and whether the Eastside scheme is set to repeat the mistakes of the past
On the universality class of the Mott transition in two dimensions
We use the two-step density-matrix renormalization group method to elucidate
the long-standing issue of the universality class of the Mott transition in the
Hubbard model in two dimensions. We studied a spatially anisotropic
two-dimensional Hubbard model with a non-perfectly nested Fermi surface at
half-filling. We find that unlike the pure one-dimensional case where there is
no metallic phase, the quasi one-dimensional modeldisplays a genuine
metal-insulator transition at a finite value of the interaction. The critical
exponent of the correlation length is found to be . This
implies that the fermionic Mott transition, belongs to the universality class
of the 2D Ising model. The Mott insulator is the 'ordered' phase whose order
parameter is given by the density of singly occupied sites minus that of holes
and doubly occupied sites.Comment: 9 pages, 8 figure
Tridyne attitude control thruster investigation Final report
Experimental results of feasibility Tridyne attitude control thruste
Fronts and frontogenesis as revealed by high time resolution data
Upper air sounding are used to examine a cold front of average intensity. Vertical cross sections of potential temperature and wind, and horizontal analyses were compared and adjusted for consistency. These analyses were then used to study the evolution of the front, found to consist of a complex system of fronts occurring at all levels of the troposphere. Low level fronts were strongest at the surface and rapidly weakened with height. Fronts in the midddle troposphere were much more intense. The warm air ahead of the fronts was nearly barotropic, while the cold air behind was baroclinic through deep layers. A deep mixed layer was observed to grow in this cold air
Applicant Attraction Strategies: An Organizational Perspective
Developing labor shortages are expected to increase the importance of applicant attraction into the next century. Unfonunately, previous research has provided little in the way of unified theory or operational guidelines for organizations confronted with attraction difficulties. In part, this is because much research has been framed from the applicant\u27s, rather than the organization\u27s, perspective. In addition, attraction-related theories and research are scattered across a variety of literatures, and often identified primarily with topics other than attraction per se (e.g., wage, motivation, or discrimination theories). The present paper draws on multiple literatures to develop a model of applicant attraction from the organization\u27s perspective. In it, we (1) outline three general strategies for enhancing applicant attraction, (2) propose broad categories of contingency factors expected to affect the choice (and potential effectiveness) of alternative strategies, (3) suggest probable interrelationships among the strategies, (4) link applicant attraction strategies to other human resource practices, (5) outline various dimensions of attraction outcomes (e.g. qualitative and quantitative, attitudinal and behavioral, temporal), and (6) discuss implications for future attraction research
Optimal Axes of Siberian Snakes for Polarized Proton Acceleration
Accelerating polarized proton beams and storing them for many turns can lead
to a loss of polarization when accelerating through energies where a spin
rotation frequency is in resonance with orbit oscillation frequencies.
First-order resonance effects can be avoided by installing Siberian Snakes in
the ring, devices which rotate the spin by 180 degrees around the snake axis
while not changing the beam's orbit significantly. For large rings, several
Siberian Snakes are required.
Here a criterion will be derived that allows to find an optimal choice of the
snake axes. Rings with super-period four are analyzed in detail, and the HERA
proton ring is used as an example for approximate four-fold symmetry. The
proposed arrangement of Siberian Snakes matches their effects so that all
spin-orbit coupling integrals vanish at all energies and therefore there is no
first-order spin-orbit coupling at all for this choice, which I call snakes
matching. It will be shown that in general at least eight Siberian Snakes are
needed and that there are exactly four possibilities to arrange their axes.
When the betatron phase advance between snakes is chosen suitably, four
Siberian Snakes can be sufficient.
To show that favorable choice of snakes have been found, polarized protons
are tracked for part of HERA-p's acceleration cycle which shows that
polarization is preserved best for the here proposed arrangement of Siberian
Snakes.Comment: 14 pages, 16 figure
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