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A dual-link capacity analysis of measured time-variant radio indoor channels

There has been extensive research about single link multiple-input multiple-output (MIMO) channels, both simulated and measured, but only few studies have targeted multilink analysis with measured channel data. Hence, in this paper, we analyze the influence of spatial separation of user terminals and the human shadowing effect on the MIMO capacity and to the signal to interference ratio (SIR) in a

Substituting computers for services - potential to reduce ICT's environmental footprint

The environmental footprint of IT products are significant and, in spite of manufacturing and product design improvements, growing consumption of electronics results in increasing absolute environmental impact. Computers have short technological lifespan and a lot of the in-build performance, although necessary, remains idling for most of the time. Today, most of computers used in non-residential

As though we had no spirit: Ritual, politics and existence in the Aymara quest for decolonization

Colonialism’ and ‘decolonization’ have been dealt with by postcolonial studies and, more recently, by scholars identified with the ‘de-colonial turn’. At the same time, in the ethnopolitically charged context of contemporary Bolivian society, colonialism and decolonization have become issues of political, existential and even cosmological import. This thesis identifies a need to root the ‘de-colon

Flocculation with Polyelectrolytes in Latex and Microbial Systems

Adsorption of cationic polyelectrolytes onto polystyrene latices was studied as function of polymer chemical composition and molecular weight, polymer and surface charge density and ionic strength. The ratio between polymer charges and surface charges was close to one when distances between polymer and surface charges were equal. Overcompensation of the surface charge was obtained at higher polyme

Alzheimer's Disease: The role of alpha1-antichymotrypsin-amyloid peptide (Abeta 1-42) interaction in the pathogenesis of Alzheimer's disease

Alzheimer’s disease (AD) is an age-related, irreversible brain disorder that occurs gradually and results in memory loss, behavioural and personality changes. The disease is characterized by an abnormal accumulation of amyloid-beta (Ab) peptide in the extracellular space and the protein Tau within nerve cells of certain regions of the brain. Aâ1-42 is a major component of amyloid deposits in AD, b

A Complex Adaptive System Approach on Logistics - Implications of adopting a complexity perspective

The quest of developing the logistics discipline, with a more theoretical foundation, is something several authors have emphasized and called for. Today one could argue that most of the research on logistics has a strong connection to the positivistic paradigm where there is a great emphasis on prediction, rationality and control in the solutions produced. In order to challenge the common assumpti

Modeling of Reverse Flow Partial Oxidation Process for Gasifier Product Gas Upgrading

Biomass gasification is one of the alternatives to producing liquid fuels and chemicals from biomass residues. The gas produced in gasification contains CO, H2, H2O, CO2, light hydrocarbons and tars. Depending on the gasifier type, operating conditions and fuel, the light hydrocarbons can contain as much as 50 % of the total energy contents in the gas. The gas also contains catalyst poisons such a