Search results for "PSD"
showing 10 items of 36 documents
Behavioral and Psychological Symptoms in Mild Cognitive Impairment subtypes: BPSD and Neuroimaging Correlation
2012
Testing Equality of Multiple Power Spectral Density Matrices
2018
This paper studies the existence of optimal invariant detectors for determining whether P multivariate processes have the same power spectral density. This problem finds application in multiple fields, including physical layer security and cognitive radio. For Gaussian observations, we prove that the optimal invariant detector, i.e., the uniformly most powerful invariant test, does not exist. Additionally, we consider the challenging case of close hypotheses, where we study the existence of the locally most powerful invariant test (LMPIT). The LMPIT is obtained in the closed form only for univariate signals. In the multivariate case, it is shown that the LMPIT does not exist. However, the c…
Locally optimal invariant detector for testing equality of two power spectral densities
2018
This work addresses the problem of determining whether two multivariate random time series have the same power spectral density (PSD), which has applications, for instance, in physical-layer security and cognitive radio. Remarkably, existing detectors for this problem do not usually provide any kind of optimality. Thus, we study here the existence under the Gaussian assumption of optimal invariant detectors for this problem, proving that the uniformly most powerful invariant test (UMPIT) does not exist. Thus, focusing on close hypotheses, we show that the locally most powerful invariant test (LMPIT) only exists for univariate time series. In the multivariate case, we prove that the LMPIT do…
Project report : Lessons learned from terminology harmonisation
2022
A common understanding of language and the meaning of concepts is needed for communications in general, and can be crucial to save lives in large rescue operations. Redningshåndboka (the National Rescue handbook) provides a common glossary for first responders’ communications across all sectors in training and practice. However, today each sector maintains their own glossaries, acronyms and jargon, causing potential misunderstandings in joint operations. In this report we outline lessons learned from national and international standardisation and additional practical project outcomes to contribute to terminology harmonisation from the INSITU project.
Effects of PSD2 on security architecture of mobile banking : a review of literature
2017
This thesis aims to find out the changes that the Payment Service Directive (PSD2) will bring to the security architecture of mobile banking. PSD2 will create a situation where security mechanisms are separated from the actual banking application. Payment service providers must provide their Application Programming Interface for third party developers to give them access to authentication of payment transactions. PSD2 requires payments service providers to offer strong customer authentication with separate authentication mechanism from the banking application. This thesis found that academic literature about the security architecture of mobile banking does not provide a model where a separa…
Characterization of a new plastic scintillation material and comparison with liquid BC-501A scintillator
2015
In this work the capability of various scintillation materials to discriminate gamma rays and neutrons were studied. Also such basic properties of scintillators as light emission spectrum and light output were determined. The studied materials were BC-501A liquid scintillator and a plastic scintillator provided by CEA. An experimental setup consisting of detector shielding, analog and digital electronics and data acquisition system was built to study the neutron-gamma discrimination properties of the scintillation materials. Pulse shape discrimination (PSD) technique was utilized. A computer code with a PSD algorithm was written. This code integrates the scintillation pulse waveforms over s…
BDNF-induced nitric oxide signals in cultured rat hippocampal neurons: time course, mechanism of generation, and effect on neurotrophin secretion
2014
BDNF and nitric oxide signaling both contribute to plasticity at glutamatergic synapses. However, the role of combined signaling of both pathways at the same synapse is largely unknown. Using NO imaging with diaminofluoresceine in cultured hippocampal neurons we analyzed the time course of neurotrophin-induced NO signals. Application of exogenous BDNF, NT-4, and NT-3 (but not NGF) induced NO signals in the soma and in proximal dendrites of hippocampal neurons that were sensitive to NO synthase activity, TrkB signaling, and intracellular calcium elevation. The effect of NO signaling on neurotrophin secretion was analyzed in BDNF-GFP, and NT-3-GFP transfected hippocampal neurons. Exogenous ap…
Workshop som arena for deling av kunnskap : deling av kunnskap mellom byggeledere i Kruse Smith
2014
Masteroppgave Innovasjon og kunnskapsutvikling ME513 - Universitetet i Agder 2014 Denne oppgaven handler om kunnskap og kunnskapsdeling. Verdien av kunnskap har værtmer og mer i fokus i den senere tid. Men det gjelder ikke bare verdien av kunnskap, men ogsåhvor viktig innovasjon er og den gevinsten man får av å dele den.Jeg har jobbet med firmaet Kruse Smith, som er en entreprenør bedrift i bygge- oganleggsbransjen. Den er Norges største familieeide entreprenør bedrift, med en omsetning på4,1 milliarder (2012). Dette gjør at de også er blant de seks største entreprenørene i Norge.Videre er Bygg- og anleggsbransjen den nest største fastlandsindustrien, og den største når detkommer til distri…