10,609 research outputs found

    An Ecological Understanding of Evaluation Use: A Case Study of the Active for Life Evaluation

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    Analyzes uses of Active for Life program evaluations in multiple ecosystems -- program, community, field, and society -- including types of use such as symbolic or conceptual, sequential patterns, and leveraged use

    Bunge’s Mathematical Structuralism Is Not a Fiction

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    In this paper, I explore Bunge’s fictionism in philosophy of mathematics. After an overview of Bunge’s views, in particular his mathematical structuralism, I argue that the comparison between mathematical objects and fictions ultimately fails. I then sketch a different ontology for mathematics, based on Thomasson’s metaphysical work. I conclude that mathematics deserves its own ontology, and that, in the end, much work remains to be done to clarify the various forms of dependence that are involved in mathematical knowledge, in particular its dependence on mental/brain states and material objects

    Long-term unemployment in Poland in the years 1995-2007

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    The statistical data on the Polish economy show that the country's long-term unemployment is relatively large. To curb the negative macroeconomic impacts of this type of unemployment, its scale needs to be reduced. It is also necessary to increase the rate of long-term unemployed workers using the active labour market programmes

    A new foundational crisis in mathematics, is it really happening?

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    The article reconsiders the position of the foundations of mathematics after the discovery of HoTT. Discussion that this discovery has generated in the community of mathematicians, philosophers and computer scientists might indicate a new crisis in the foundation of mathematics. By examining the mathematical facts behind HoTT and their relation with the existing foundations, we conclude that the present crisis is not one. We reiterate a pluralist vision of the foundations of mathematics. The article contains a short survey of the mathematical and historical background needed to understand the main tenets of the foundational issues.Comment: Final versio

    Brain functors: A mathematical model for intentional perception and action

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    Category theory has foundational importance because it provides conceptual lenses to characterize what is important and universal in mathematics—with adjunctions being the primary lens. If adjunctions are so important in mathematics, then perhaps they will isolate concepts of some importance in the empirical sciences. But the applications of adjunctions have been hampered by an overly restrictive formulation that avoids heteromorphisms or hets. By reformulating an adjunction using hets, it is split into two parts, a left and a right semiadjunction. Semiadjunctions (essentially a formulation of universal mapping properties using hets) can then be combined in a new way to define the notion of a brain functor that provides an abstract model of the intentionality of perception and action (as opposed to the passive reception of sense-data or the reflex generation of behavior)
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