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This interview-based study seeks to gain insight into the varying motivations behind car usage across different societal groups, alongside their attitudes towards travel behavior and transportation options. Its overarching goal is to delve deeper into the factors and constraints that influences individuals’ car use and mode choice. The research methodology involves collecting one-month travel data
The South African forestry supply chain is a complex system that involves both the production of trees (site preparation, re-establishment, tending, and maintenance operations) and the production and distribution of wood products from plantation stands to the pulp- and sawmills. This paper reports on a study that investigated the suitability of discrete-event simulation for modelling forestry supp
Next generation wireless systems have to be able to efficiently deal with fast fading environments in order to achieve high spectral efficiency. Using multiple-input multiple-output (MIMO) systems and exploiting receive diversity, their spectral efficiency can be greatly increased. Commonly, the channel is estimated via training symbols, before the data detection is carried out based on the previo
The physical bounds for antennas above a ground plane is analyzed in this paper. Optimal antenna G/Q ratio and Q factor are calculated using convex optimization from stored electric and magnetic energy matrices, obtained from a method of moments solver. Physical bounds for a patch antenna with different heights above a ground plane are investigated. Results are verified using commercially availabl
An explanation is given for the paradoxical fact that, at low signal-to-noise ratios, the systematic feedback encoder results in fewer decoding bit errors than does a nonsystematic feedforward encoder for the same code. The analysis identifies a new code property, the d-distance weight density of the code. For a given d-distance weight density, the decoding bit error probability depends on the num
The importance of social circumstances for middle-age women’s general subjective well-being (SWB) was investigated in a representative sample of Swedish women, age 43 (N = 369). The results showed non-existent to moderate relationships between a number of social circumstances variables and general SWB. The strongest relationship was found between marital status and global life satisfaction. Being
The article analyzes mechanisms established to control the fulfillment of the EU sustainability criteria for biofuels that were presented in Directive 2009/28/EC. The article is the continuation of the research started in the work Pavlovskaia, E. (2013) “Controlling the Fulfillment of the EU Sustainability Criteria for Transport Biofuels”, which was published in RELP 4/2013. The conducted analysis
