Search results for "iho"

The origin of Lecithodesmus (Digenea: Campulidae) based on ND3 gene comparison

2000

Species of Lecithodesmus (Campulidae) occur almost exclusively in baleen whales throughout a wide geographical distribution. Other campulids occur only in odontocetes and, secondarily, in pinnipeds and the sea otter. Therefore, the ancestor of Lecithodesmus might have either cospeciated with mysticetes during the early divergence of mysticete and odontocete cetaceans or originated later via host switching. We evaluate both possibilities based on a phylogenetic analysis. The ND3 mitochondrial gene sequence of a species of Lecithodesmus was included in a previous partial molecular phylogeny of the Campulidae. Fasciola hepatica and Dicrocoelium dendriticum were used as outgroups. Maximum parsi…

Morāles intuitīvo pamatu svarīguma un morāles faktoru saistība ar lojalitāti militārā vidē

2021

Bakalaura darba mērķis - noskaidrot, kā morāles faktori ir saistīti ar karavīru lojalitāti pret Nacionālajiem bruņotajiem spēkiem, vai morāles intuitīvie pamati prognozē augstāku karavīru morāli, un vai augstāki morāles faktoru un morāles intuitīvo pamatu rādītāji prognozē augstāku karavīru lojalitāti pret organizāciju. Pētījumā piedalījās 105 Studentu bataljona zemessargi. Tika izmantota morāles intuitīvo pamatu aptauja (Moral Foundations Questionnaire: 30-Item Full version-MFQ 30; Graham, Haidt & Nosek, 2008), morāles faktoru aptauja (An Instrument for Measuring Morale of Military Personnel in the Malaysian Army, Osman et al., 2018) un lojalitātes aptauja (The measurement of organizationa…

Prosociālas uzvedības motivācijas saistība ar morālo identitāti brīvprātīgā darba veicējiem

2021

Bakalaura darba nosaukums ir “Prosociālas uzvedības motivācijas saistība ar morālo identitāti brīvprātīgā darba veicējiem”. Šī darba mērķis bija noskaidrot, vai pastāv pozitīvas saistības starp brīvprātīgā darba veicēju morālo identitāti un brīvprātīgā darba motivācijas dimensijām. Pētījumā piedalījās 54 dalībnieki, no tiem 51 sievietes (94,4%) un 3 vīrieši(5,6%), vecumā no 14 līdz 55 gadiem (M=24,50, SD=9,90). Respondenti aizpildīja aptauju, kura sastāvēja no Brīvprātīgā darba funkciju aptaujas (Volunteer functions inventory; Clary et al., 1998 – aptauja tika adaptēta pētījuma ietvaros) un Morālās identitātes nozīmības skalas (The self-importance of moral identity scale; Aquino & Reed, 200…

Evolution of arginine deiminase (ADI) pathway genes

2002

We have analyzed the evolution of the three genes encoding structural enzymes of the arginine deiminase (ADI) pathway, arginine deiminase (ADI), ornithine transcarbamoylase (OTC), and carbamate kinase (CK) in a wide range of organisms, including Archaea, Bacteria, and Eukarya. This catabolic route was probably present in the last common ancestor to all the domains of life. The results obtained indicate that these genes have undergone a complex evolutionary history, including horizontal transfer events, duplications, and losses. Therefore, these genes are not adequate to infer organismal relationships at deep branching levels, but they provide an insight into how catabolic genes evolved and …

Multiple overseas dispersal in amphibians

2003

Amphibians are thought to be unable to disperse over ocean barriers because they do not tolerate the osmotic stress of salt water. Their distribution patterns have therefore generally been explained by vicariance biogeography. Here, we present compelling evidence for overseas dispersal of frogs in the Indian Ocean region based on the discovery of two endemic species on Mayotte. This island belongs to the Comoro archipelago, which is entirely volcanic and surrounded by sea depths of more than 3500 m. This constitutes the first observation of endemic amphibians on oceanic islands that did not have any past physical contact to other land masses. The two species of frogs had previously been tho…

Multihoming in the Market for Payment Media: Evidence from Young Finnish Consumers

2004

Tassa tutkimuksessa tarkastellaan sita, miksi jotkut kuluttajista kayttavat vain yhta maksuvalinetta ja toiset kuluttajat monia maksuvalineita maksaessaan paivittaisia ostoksiaan. Kayttamalla aineistoa nuorista suomalaisista kuluttajista loydamme, etta yksi tarkeimmista maksuvalineiden kayttoon vaikuttavista tekijoista on kuluttajien yleinen tietoisuus maksamiseen liittyvista kysymyksista. Instrumenttimuuttujaestimoinnit osoittavat, etta paremmin tietoiset kuluttajat kayttavat 1.2-1.3 kertaa useampaa maksuvalinetta kuin vahemman tietoiset kuluttajat. Koska monia uusia maksuvalineita kaytetaan usein aluksi olemassa olevien maksuvalineiden rinnalla, tuloksemme tukevat nakemysta, etta kuluttaj…

Penalized inference in multivariate ordered logistic models: theory and applications

2011

Association between climate and new daily diagnoses of COVID-19

2020

AbstractBackgroundAlthough evidence is accumulating that climate conditions may positively or negatively influence the scale of coronavirus disease 2019 (COVID-19) outbreaks, uncertainty remains concerning the real impact of climate factors on viral transmission. Methods. The number of new daily cases of COVID-19 diagnosed in Verona (Italy) was retrieved from the official website of Veneto Region, while information on daily weather parameters in the same area was downloaded from IlMeteo website, a renowned Italian technological company specialized in weather forecasts. The search period ranged between March 1 to November 11, 2020. The number of new daily COVID-19 cases and meteorological da…

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…