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Altered consciousness is a many splendored thing

Abstract in UndeterminedContrary to the notion that altering our ordinary state of consciousness necessarily produces delusional beliefs and is generally deleterious, various findings in psychology and other disciplines suggest that 1) the ordinary state of consciousness does not provide an accurate mapping of reality and 2) alterations of consciousness can have various positive functions. Among t

Physical Modeling of MIMO Antennas and Channels by Means of the Spherical Vector Wave Expansion

In this paper we propose a new physically motivated model that allows to study the interaction between the antennas and the propagation channel for Multiple-Input Multiple-Output (MIMO) systems. The key tools employed in the model are the expansion coefficients of the electromagnetic field in spherical vector waves and the scattering matrix representation of the properties of the antenna. We deriv

Hacktivism – hackerkulturens svårgripbara organisationformer

Man kan kalla dem hackers, hacktivister eller nätaktivister. Själva ser de sig som tekniskt intresserade, en teknisk gemenskap. Deras långsiktigt politiska mål skiftar, de saknar gemensam ideologi och fasta strukturer. Det som delas är en innerlig fascination för tekniken bakom nätet – och kanske en minst lika innerlig aversion för destruktion av detta.

Estimating the resilience value of soil biodiversity in agriculture: a stochastic simulation approach

Abstract in UndeterminedCharacteristic of ecosystems is that different organisms can have similar functions and hence provide similar ecosystem services. Consequently functional diversity can maintain the rate of services despite environmental fluctuations. In this paper we present a method for estimating the resilience value of biodiversity. Central to a resilience perspective on biological conse