Search results for "MSE"
showing 10 items of 130 documents
Risk of Local Extinction of Odonata Freshwater Habitat Generalists and Specialists
2014
Understanding the risk of a local extinction in a single population relative to the habitat requirements of a species is important in both theoretical and applied ecology. Local extinction risk depends on several factors, such as habitat requirements, range size of species, and habitat quality. We studied the local extinctions among 31 dragonfly and damselfly species from 1930 to 1975 and from 1995 to 2003 in Central Finland. We tested whether habitat specialists had a higher local extinction rate than generalist species. Approximately 30% of the local dragonfly and damselfly populations were extirpated during the 2 study periods. The size of the geographical range of the species was negati…
Discovering Gender-Specific Knowledge from Finnish Basic Education using PISA Scale Indices
2014
The Programme for International Student Assessment, PISA, is a worldwide study to assess knowledge and skills of 15- year-old students. Results of the latest PISA survey conducted in 2012 were published in December 2013. According to the results, Finland is one of the few countries where girls performed better in mathematics than boys. The purpose of this work is to refine the analysis of this observation by using education data mining techniques. More precisely, as part of standard PISA preprocessing phase certain scale indices are constructed based on information gathered from the background questionnaire of each participating student. The indices describe, e.g., students’ engagement, dri…
The influence of thermal extremes on coral reef fish behaviour in the Persian Gulf
2019
AbstractDespite increasing environmental variability within marine ecosystems, little is known about how coral reef fish species will cope with future climate scenarios. The Arabian/Persian Gulf is an extreme environment, providing an opportunity to study fish behaviour on reefs with seasonal temperature ranges which include both values above the mortality threshold of Indo-Pacific reef fish, and values below the optimum temperature for growth. Summer temperatures in the Gulf are comparable to those predicted for the tropical ocean by 2090-2099. Using field observations in winter, spring and summer, and laboratory experiments, we examined the foraging activity, distance from refugia and res…
Mācīšanās no vienaudžiem kā viena no iespējām lasītprasmes apguvē 5-6 gadu veciem bērniem pirmsskolā
2022
Darba tēma: Mācīšanās no vienaudžiem kā viena no iespējām lasītprasmes apguvē 5-6 gadu veciem bērniem pirmsskolā Darba autore: Rasa Celitāne Darba zinātniskā vadītāja: profesore, Dr. pead. Baiba Kaļķe Darba apjoms: 78 lpp. , 5 pielikumi, izmantots 60 literatūras avots Atslēgvārdi: LASĪTPRASME, VIENAUDŽI, 5-6 GADUS VECI BĒRNI. Pētījuma mērķis: izzināt, kā vienaudži var palīdzēt apgūt lasītprasmi 5-6 gadus veciem bērniem pirmsskolā. Pētījuma mērķis ir analizēt un pētīt kā vienaudži palīdz apgūt lasītprasmi.Izvirzītā mērķa sasniegšanai tika analizēta un pētīta teorētiskā literatūra par lasītprasmi un nosacījumiem tās apguvē. Papildus tika pētītas arī 5-6 gadus vecu bērnu psiholoģiskās un fizio…
Cross-Subject Emotion Recognition Using Fused Entropy Features of EEG.
2022
Emotion recognition based on electroencephalography (EEG) has attracted high interest in fields such as health care, user experience evaluation, and human–computer interaction (HCI), as it plays an important role in human daily life. Although various approaches have been proposed to detect emotion states in previous studies, there is still a need to further study the dynamic changes of EEG in different emotions to detect emotion states accurately. Entropy-based features have been proved to be effective in mining the complexity information in EEG in many areas. However, different entropy features vary in revealing the implicit information of EEG. To improve system reliability, in this paper,…
La storia del ‘Vocabularium iurisprudentiae Romanae’. 1. Il progetto del vocabolario e la nascita dell’interpolazionismo
2017
A close examination of the intersection of printed and unpublished sources allows, in a comprehensive manner, to reconstruct the history of the project of the Vocabularium iurisprudentiae Romanae. Within this unitary framework the idea that interpolationism was based on a lexical motive, and not on a juridical one, is discussed. Eine eingehende Überprüfung von gedruckten und ungedruckten Quellen ermöglicht es, die Projektgeschichte des Vocabularium iurisprudentiae Romanae vollständig zu rekonstruieren. In diesem Rahmen wird die Vorstellung erörtert, nach der hinter der zeitgenössischen Interpolationenkritik ein wesentlich lexikalischer, nicht aber juristischer, Beweggrund zu erblicken sei.
Priežu mežu zemsedzes atjaunošanās pēc kontrolētās dedzināšanas un ugunsgrēkiem Natura 2000 teritorijā “Ādaži”
2018
Ugunsgrēki ir dabisks boreālo mežu ekoloģijas traucējums, kas izmaina dažādus meža ekosistēmas parametrus un bioloģisko daudzveidību, un Natura 2000 teritorijā “Ādaži” šis traucējums tiek imitēts, izmantojot kontrolēto dedzināšanu. Šajā pētījumā tika pētīta zemsedzes atjaunošanās gaita pēc kontrolētās dedzināšanas un ugunsgrēkiem Ādažu sausajos priežu mežos, ierīkojot parauglaukumus un nosakot sugu projektīvos segumus pēc Brauna-Blankē metodes. Sugu sastāva izmaiņas pēc kontrolētās dedzināšanas un ugunsgrēka ir līdzīgas, jo abos gadījumos gadu pēc degšanas pieauga sugu skaits, kas skaidrojams ar pioniersugu ieviešanos, kuru izplatība, galvenokārt, notika ar sēklām. Gandrīz visām sugām pēc d…
Regional variations in occupancy frequency distributions patterns between odonate assemblages in Fennoscandia
2018
Odonate (damselfly and dragonfly) species richness and species occupancy frequency distributions (SOFD) were analysed in relation to geographical location in standing waters (lakes and ponds) in Fennoscandia, from southern Sweden to central Finland. In total, 46 dragonfly and damselfly species were recorded from 292 waterbodies. Species richness decreased to the north and increased with waterbody area in central Finland, but not in southern Finland or in Sweden. Species occupancy ranged from 1 up to 209 lakes and ponds. Over 50% of the species occurred in less than 10% of the waterbodies, although this proportion decreased to the north. In the southern lakes and ponds, none of the species o…
High-precision mass measurements for the isobaric multiplet mass equation atA= 52
2017
Masses of $^{52}$Co, $^{52}$Co$^m$, $^{52}$Fe, $^{52}$Fe$^m$, and $^{52}$Mn have been measured with the JYFLTRAP double Penning trap mass spectrometer. Of these, $^{52}$Co and $^{52}$Co$^m$ have been experimentally determined for the first time and found to be more bound than predicted by extrapolations. The isobaric multiplet mass equation for the $T=2$ quintet at $A=52$ has been studied employing the new mass values. No significant breakdown (beyond the $3\sigma$ level) of the quadratic form of the IMME was observed ($\chi^2/n=2.4$). The cubic coefficient was 6.0(32) keV ($\chi^2/n=1.1$). The excitation energies for the isomer and the $T=2$ isobaric analogue state in $^{52}$Co have been d…
The role of the Thomsen-Friedenreich antigen as a tumor-associated molecule.
1990
The Thomsen-Friedenreich antigen (Gal-GalNAc) represents a tumor-associated molecule, which is assumed to be one of the few chemically well-defined antigens with a proven association with malignancy. In order to analyze the role of the carbohydrate structure Gal-GalNAc for gastrointestinal tumors, we immunized Balb/c mice with MCF-7 breast tumor cells together with synthetic Gal-GalNAc linked to a BSA carrier. One monoclonal antibody (82-A6) was established which recognizes the Thomsen-Friedenreich antigen according to the biochemical and serological analysis presented here. In contrast to the studies performed in the past, immunohistochemical results using this antibody 82-A6 did not exhib…