Search results for " Sam"
showing 10 items of 1096 documents
Variance estimation and asymptotic confidence bands for the mean estimator of sampled functional data with high entropy unequal probability sampling …
2013
For fixed size sampling designs with high entropy it is well known that the variance of the Horvitz-Thompson estimator can be approximated by the H\'ajek formula. The interest of this asymptotic variance approximation is that it only involves the first order inclusion probabilities of the statistical units. We extend this variance formula when the variable under study is functional and we prove, under general conditions on the regularity of the individual trajectories and the sampling design, that we can get a uniformly convergent estimator of the variance function of the Horvitz-Thompson estimator of the mean function. Rates of convergence to the true variance function are given for the re…
The public–private sector wage gap in Latvia
2018
This study investigates the public-private sector wage gap in Latvia using microdata from the labour force survey. The severity of public sector wage cuts employed as a response to the economic crisis and subsequent recovery provides a test bed to analyse whether and how the public-private sector wage gap has adjusted after consolidation-driven wage cuts. Findings reveal that the observed wage gap is slightly in favour of the public sector; however, once differences in individual characteristics and selection effects are considered, results point to a private sector wage premium. Findings also suggest that the private sector wage premium has increased since the pre-crisis period. A signific…
Unobserved Heterogeneity in Overeducation Models: Is Personality More Important than Ability?
2013
This paper compares the performance of selected personality aspects and ability on explaining the overeducation status of the individual. Ability is defined as the difference between the actual and the predicted income. Personality proves to be an important factor affecting the risk of overeducation. For females, personality allows to better explain mismatch than ability. For males, ability frequently, but not always, performs better than personality. Controlling for personality allows for better classification of the non-overeducated, while controlling for ability improves the classification of the overeducated. The study is done on the pooled sample of 23 European countries, as well as fo…
Endotoxins in ophthalmic viscosurgical devices.
2003
Purpose To measure the endotoxin concentration (EC) of 25 commercially available, hyaluronic acid- and hydroxypropylmethylcellulose-based (HPMC) ophthalmic viscosurgical devices (OVDs). Methods The in vitro Limulus amebocyte lysate (LAL) assay, which indicates the presence of endotoxins originating from gram-negative bacteria, was used to determine the EC. The procedure was performed according to the European Pharmacopoeia/USP. EC including duplicate determinations, negative controls, dilution series with control standard endotoxin, dilution series with sample extract and positive sample control. Results 16 OVDs (Amvisc®, Amvisc® Plus, Biolon®, Coatel®, Healon®, Healon® GV, Healon®5, HPMC O…
German and Austrian occupant literature on the Sami in Norway and Lapland – “Harmless” minority, a resource, and well-off “reindeer kings”
2020
Source at http://urn.fi/URN:NBN:fi:jyu-202006234344. In previous research on the history of the Second World War in Finland and Norway, relations between the German and Austrian occupying forces and the Sami people have generally been considered to be good. The occupant gaze upon the Sami has been interpreted as exoticizing and “touristic”. Historical encounters and the Sami position in the literary discourse are discussed and explained in this article, using a selection of German and Austrian wartime and post-war literature. The discursive reading the sources bear evidence of multiple ways of relating to the Sami, from benign to racializing; from demeaning to one filled with surprise at un…
Unpredictability of fish recruitment: interannual variation in young-of-the-year abundance
2000
In 1989-1998, vendace larvae Coregonus albula were sampled in Finnish lakes following a stratified random sampling design. The abundance of young-of-the-year vendace after the first growing season was estimated using catch-per-unit-effort statistics. The number or total area of nursery places hardly limited the recruitment of vendace in the study lakes. The major proportion of prerecruit mortality of vendace occurred in the larval phase and larval sampling produced significant information on young-of-the-year survival. Although larval abundances and recruitment were clearly associated only in Lake Onkamo, generally high larval abundance was needed to produce high number of recruits.
E-læring, dialog og kommunikasjon - Et følgeforskningsprosjekt i tilknytning til Regionalt samarbeidsprosjekt om lederopplæring
2007
Denne rapporten presenterer resultater fra følgeforskning i tilknytning til Regionalt samarbeidsprosjekt om lederopplæring. Prosjektet har siktet mot å realisere avtalen om et inkluderende arbeidsliv (IA) ved å skolere mellomlederes kommunikative egenskaper. Lederopplæringen har hatt deltakere fra kommunene Birkenes, Vennesla, Mandal, Søgne, Lillesand, Songdalen og Kristiansand, samt Vest-Agder fylkeskommune. Programmet som bestått av tre samlinger med støtte fra e- læringsverktøy og en kursbok. Undersøkelsen viser at de aller fleste deltakerne er svært fornøyde med programmet. De er særlig fornøyde med samlingene. E-læringsverktøyet og kursboka er beskrevet som et viktig og positivt supple…
(Table 1) Trace element/Ca ratios of Orbulina universa shells from late Neogene Mediterranean samples
2008
A Mediterranean composite sedimentary record was analyzed for Ba/Ca ratios on carbonate shells of Orbulina universa planktonic foraminifer (Ba/Ca)carb providing the opportunity to study and assess the extent of freshwater inputs on the basin and possible impacts on its dynamics during the Tortonian to Recent period. A number of scanning electron microscope analyses and auxiliary trace element measurements (Mn, Sr, and Mg), obtained from the same samples, exclude important diagenetic effects on the studied biogenic carbonates and corroborate the reliability of (Ba/Ca)carb ratios in foraminifera calcite as indicators of seawater source components during the studied interval. A long-term trend…
Stable isotopic composition of three foraminifera species in ODP Hole 160-963D
2020
Carbon-rich layers exist at both sides of the Mediterranean Sea sedimentary record and are called sapropels and organic rich layers (ORLs), respectively in the eastern and western basins. They have different levels of organic carbon accumulation and seafloor oxygen deprivation. The most recent sapropel and ORL deposition have a different timing, 10.8-6.1 and 14.5-9.0 ka respectively. Here we investigate oxygen isotopic records of three foraminifera species that occupy different habitats within the Sicily Channel water column since ~ 12.0 ka, thus in the sill between the eastern and western Mediterranean basins. These data are ice volume-corrected, to get information on water masses density …
Robust estimation of mean electricity consumption curves by sampling for small areas in presence of missing values
2017
In this thesis, we address the problem of robust estimation of mean or total electricity consumption curves by sampling in a finite population for the entire population and for small areas. We are also interested in estimating mean curves by sampling in presence of partially missing trajectories.Indeed, many studies carried out in the French electricity company EDF, for marketing or power grid management purposes, are based on the analysis of mean or total electricity consumption curves at a fine time scale, for different groups of clients sharing some common characteristics.Because of privacy issues and financial costs, it is not possible to measure the electricity consumption curve of eac…