28 research outputs found
Fabry-Perot-cavity-based refractometry without influence of mirror penetration depth
No full textAssessments of refractivity in a Fabry-Perot (FP) cavity by refractometry often encompass a step in which the penetration depth of the light into the mirrors is estimated to correct for the fraction of the cavity length into which no gas can penetrate. However, as it is currently carried out, this procedure is not always coherently performed. Here, we discuss a common pitfall that can be a reason for this and provide a recipe on how to perform FP-cavity-based refractometry without any influence of mirror penetration depth.Errata: C. Forssén, I. Silander, J. Zakrisson, M. Zelan, and O. Axner , "Retraction: “Fabry–Perot-cavity-based refractometry without influence of mirror penetration depth” [J. Vac. Sci. Technol. B 39, 065001 (2021)]", Journal of Vacuum Science & Technology B 40, 037001 (2022) https://doi.org/10.1116/6.0001829</p
Control of Sodium Transport in Durum Wheat
No full textIn many species, salt sensitivity is associated with the accumulation of sodium (Na⁺) in photosynthetic tissues. Na⁺ uptake to leaves involves a series of transport steps and so far very few candidate genes have been implicated in the control of these processes. In this study, Na⁺ transport was compared in two varieties of durum wheat (Triticum turgidum) L. subsp. durum known to differ in salt tolerance and Na⁺ accumulation; the relatively salt tolerant landrace line 149 and the salt sensitive cultivar Tamaroi. Genetic studies indicated that these genotypes differed at two major loci controlling leaf blade Na⁺ accumulation (R. Munns, G.J. Rebetzke, S. Husain, R.A. James, R.A. Hare [2003] Aust J Agric Res 54: 627–635). The physiological traits determined by these genetic differences were investigated using measurements of unidirectional ²²Na⁺ transport and net Na+ accumulation. The major differences in Na⁺ transport between the genotypes were (1) the rate of transfer from the root to the shoot (xylem loading), which was much lower in the salt tolerant genotype, and (2) the capacity of the leaf sheath to extract and sequester Na⁺ as it entered the leaf. The genotypes did not differ significantly in unidirectional root uptake of Na⁺ and there was no evidence for recirculation of Na⁺ from shoots to roots. It is likely that xylem loading and leaf sheath sequestration are separate genetic traits that interact to control leaf blade Na⁺.Romola Davenport, Richard A. James, Anna Zakrisson-Plogander, Mark Tester, and Rana Munn
A tree-based varying coefficient model
No full textThe paper introduces a tree-based varying coefficient model (VCM) where the varying coefficients are modelled using the cyclic gradient boosting machine (CGBM) from Delong et al. (On cyclic gradient boosting machines, 2023). Modelling the coefficient functions using a CGBM allows for dimension-wise early stopping and feature importance scores. The dimension-wise early stopping not only reduces the risk of dimension-specific overfitting, but also reveals differences in model complexity across dimensions. The use of feature importance scores allows for simple feature selection and easy model interpretation. The model is evaluated on the same simulated and real data examples as those used in Richman and Wüthrich (Scand Actuar J 2023:71–95, 2023), and the results show that it produces results in terms of out of sample loss that are comparable to those of their neural network-based VCM called LocalGLMnet.</p
Circular comparison of conventional pressure standards using a transportable optical refractometer: preparation and transportation
No full textUsing a transportable Fabry-Pérot cavity refractometer, a circular comparison of existing primary standards at several national metrology institutes is currently underway. This paper provides information about the refractometer, the preparation for the comparison, and the transportation procedur
Incidence, Prevalence and Etiology of Hearing Impairment in Children in the County of VÄsterbotten, Sweden
No full textQuantum-based realizations of the pascal: status and progress of the EMPIR-project: quantumpascal
No full textThe QuantumPascal (QP) project combines the capabilities of 12 European institutions to enable traceable pressure measurements utilizing quantum-based methods that evaluate the number density instead of force per area to target the wide pressure range between 1 Pa and 3 MPa. This article summarizes the goals and results since the project start in June 201
Supplementary material for: Extending the Applicability of the BFI-2 Personality Inventory: Predictive Validity of the Swedish Version
No full textThe supplementary material contains a log for the data collection and analysis plan, datasets, and supplementary figures and tables for the evaluation of the Swedish version of BFI-2.unknownunknow
Extending the Applicability of the BFI-2 Personality Inventory
No full textThe BFI-2 (Soto & John, 2017) has been adapted to various languages and cultures, but not yet to a Swedish context. Its predictive power has been investigated mainly on domain level, but to a lesser extent on facet level. In three large samples, N = 824, N = 1,104, and N = 823, using an online questionnaire, the intended five-factor structure for the domains Extraversion, Agreeableness, Conscientiousness, Negative Emotionality, and Open-Mindedness was reproduced in all three samples, both based on items and the facet scores. Reliability was good for the domains, more diverse for the facets, but still acceptable in most cases. Invariance analyses revealed high correspondence with the American original. The predictive validity was evaluated for individual (psychological well-being), interindividual (attachment styles), and intergroup (social dominance orientation and ambivalent sexism) variables. Regression analyses revealed significant and theoretically meaningful patterns, both for the domains and their facets
Dataset for: The Swedish BFI-2 inventory
No full textThere are three datasets: study 1, Study 2, and study 3 in two versions - SPSS and CSV. Study 1: Initial version, Study 2: Revised version, Study 3: Final version of BFI-2. There are also codebooks for all datasets.unknow
Simulation of pressure-induced cavity deformation : the 18SIB04 Quantumpascal EMPIR project
No full textThe 18SIB04 QuantumPascal EMPIR project aims for development of photon-based standards that can replace primary standards of the SI unit of pressure, the Pascal. In this project, four partners simulated the pressure-induced deformation of a given Fabry-Pérot cavity, using various versions of two types of software, COMSOL Multiphysics® and ANSYS Workbench. It was demonstrated that, for a given geometry and set of material parameters, simulations of the deformation could be performed by the various partners with such small discrepancies that methodological mistakes of the simulation procedures will solely contribute to a sub-ppm uncertainty in the assessments of refractivity of N2
