Search results for "Enna"

A review of second‐order blind identification methods

2022

Second order source separation (SOS) is a data analysis tool which can be used for revealing hidden structures in multivariate time series data or as a tool for dimension reduction. Such methods are nowadays increasingly important as more and more high-dimensional multivariate time series data are measured in numerous fields of applied science. Dimension reduction is crucial, as modelling such high-dimensional data with multivariate time series models is often impractical as the number of parameters describing dependencies between the component time series is usually too high. SOS methods have their roots in the signal processing literature, where they were first used to separate source sig…

‘Broken Finnish’ : Speaker L1 and its recognition affecting rating in National Certificates of Language Proficiency test in Finnish

2021

As many European countries have language proficiency requirements for obtaining citizenship, language testing is a possible source of social inequality. The ‘Broken Finnish’ project has been set up to ensure test fairness by addressing the proficiency rating in the National Certificates of Language Proficiency (NCLP) test for Finnish in Finland, with a special focus on perceptions of pronunciation and ‘accent’ in relation to the examinee’s L1 and how the raters recognise them. We explore if and how these perceptions affect the proficiency ratings. We are also interested in studying where the perceptions might arise from. In this paper, we present results from one L1 group: Thai speakers non…

Rivakka liike ja kymmenen tunnin syömäaika vuorokaudessa laskee diabetesriskiä

2022

Per la storia del testo di Plauto nell'antichità (e ancora sui due Sisenna)

2012

Neurobiological Models of the Central Complex and the Mushroom Bodies

2013

This study reviews the actual knowledge on functions of the central complex (CX) and the mushroom bodies (MBs) in a genetic model insect, the fly Drosophila melanogaster. Ongoing research of UNIMAINZ and respective data are included. Reference is made to other insects, where respective functions are not yet studied in Drosophila. Neuroanatomical information is reported with regard to the general flow of information in these central brain neuropils. Particular projection systems and circuits are taken into account where this can be linked to functions. Models are developed.

Photonic crystal intermediate reflector in micromorph tandem solar cells

2011

Experimental and numerical evidences are presented which show that the efficiency of silicon based tandem solar-cells can be increased by incorporating a three-dimensional photonic crystal as an intermediate reflector.

Computational investigations of 18-electron triatomic sulfur–nitrogen anions

2018

MRCI-SD/def2-QZVP and PBE0/def2-QZVP calculations have been employed for the analysis of geometries, stabilities, and bonding of isomers of the 18-electron anions N2S2−, NS2−, and NSO−. Isomers of the isoelectronic neutral molecules SO2, S2O, S3, and O3 are included for comparison. The sulfur-centered acyclic NSN2−, NSS−, and NSO− anions are the most stable isomers of their respective molecular compositions. However, the nitrogen-centered isomers SNS− and SNO− lie close enough in energy to their more stable counterparts to allow their occurrence. The experimental structural information, where available, is in good agreement with the optimized bond parameters. The bonding in all investigate…

Energy efficient optimisation for large-scale multiple-antenna system with WPT

2018

In this study, an energy-efficient optimisation scheme for a large-scale multiple-antenna system with wireless power transfer (WPT) is presented. In the considered system, the user is charged by a base station with a large number of antennas via downlink WPT and then utilises the received power to carry out uplink data transmission. Novel antenna selection, time allocation and power allocation schemes are presented to optimise the energy efficiency of the overall system. In addition, the authors also consider channel state information cannot be perfectly obtained when designing the resource allocation schemes. The non-linear fractional programming-based algorithm is utilised to address the …

Studies on high speed uplink packet access performance enhancements

2014

Explaining information technology users’ ways of mitigating technostress

2017

Technostress refers to the inability of an individual to deal with information technology (IT) in a healthy manner. Researchers, practitioners, and medical professionals have emphasized the omnipresence of technostress and its severe outcomes, including poor well-being and burnout. Despite the importance of the phenomenon, prior research has paid limited attention to how technostress can be mitigated. The few existing studies examine organizational mitigation mechanisms, but we could not find any studies that focus on individual IT users’ own ways of mitigating technostress outside of work. To address the research gap, we conducted a qualitative study to uncover users’ ways of mitigating te…