14,216 research outputs found

    The time it takes: Temporalities of planning

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    State planning has been a defining means for modern subjects to regulate the passage of time. In practice, it is the focus of multiple conflicts and doubts, which planners attempt to mediate. In this paper, I address the regimes of time that planning both promotes and encounters, and tease out what these imply for anthropology. Using ethnography of Norwegian and Swedish planning offices and their encounters with participatory planning, I question recent claims that there has been an evacuation of the near future or a retreat of administrative intervention. I also suggest that recent anthropological concerns with time have been confined by their attempts to characterize the changing timescapes of specific modal shifts, such as from the modern to the neoliberal. Instead, in my ethnography, I focus not on tracking epochal breaks in time, but on demonstrating how time is manipulated, and how multiple temporalities are performed in ongoing projects of democratic planning

    p-adic path set fractals and arithmetic

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    This paper considers a class C(Z_p) of closed sets of the p-adic integers obtained by graph-directed constructions analogous to those of Mauldin and Williams over the real numbers. These sets are characterized as collections of those p-adic integers whose p-adic expansions are describeed by paths in the graph of a finite automaton issuing from a distinguished initial vertex. This paper shows that this class of sets is closed under the arithmetic operations of addition and multiplication by p-integral rational numbers. In addition the Minkowski sum (under p-adic addition) of two set in the class is shown to also belong to this class. These results represent purely p-adic phenomena in that analogous closure properties do not hold over the real numbers. We also show the existence of computable formulas for the Hausdorff dimensions of such sets.Comment: v1 24 pages; v2 added to title, 28 pages; v3, 30 pages, added concluding section, v.4, incorporate changes requested by reviewe

    A methodology for the evaluation of program cost and schedule risk for the SEASAT program

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    An interactive computerized project management software package (RISKNET) is designed to analyze the effect of the risk involved in each specific activity on the results of the total SEASAT-A program. Both the time and the cost of each distinct activity can be modeled with an uncertainty interval so as to provide the project manager with not only the expected time and cost for the completion of the total program, but also with the expected range of costs corresponding to any desired level of significance. The nature of the SEASAT-A program is described. The capabilities of RISKNET and the implementation plan of a RISKNET analysis for the development of SEASAT-A are presented

    Critical scaling for yield is independent from distance to isostaticity

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    Using discrete element simulations, we demonstrate that critical behavior for yielding in soft disk and sphere packings is independent of distance to isostaticity over a wide range of dimensionless pressures. Jammed states are explored via quasistatic shear at fixed pressure, and the statistics of the dimensionless shear stress μ\mu of these states obey a scaling description with diverging length scale ξμμcν\xi \propto |\mu-\mu_c|^{-\nu}. The critical scaling functions and values of the scaling exponents are nearly independent of distance to isostaticity despite the large range of pressures studied. Our results demonstrate that yielding of jammed systems represents a distinct nonequilibrium critical transition from the isostatic critical transition which has been demonstrated by previous studies. Our results may also be useful in deriving nonlocal rheological descriptions of granular materials, foams, emulsions, and other soft particulate materials
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