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Model Describing Material-Dependent Deformation Behavior in High-Velocity Metal Forming Processes

A constitutive model for rate-dependent and thermomechanically coupled plasticity at finite strains is presented. The plasticity model is based on a J(2) model and rate-dependent behavior is included by use of a Perzyna-type formulation. Adiabatic heating effects are handled in a consistent way and not, as is a common assumption, through a constant conversion of the internal work rate into rate of

Variational energy functionals of the Green function and of the density tested on molecules

We have calculated total energies of atoms and diatomic molecules from the Luttinger-Ward functional, using self-energy approximations to second order as well as the GW approximation. In order to assess the variational quality of this functional, we have also solved the Dyson equation self-consistently. The Luttinger-Ward functional is compared to the variational functional due to Klein, and we de

Observation of states beyond band termination in Er-156,Er-157,Er-158 and strongly deformed structures in Hf-173,Hf-174,Hf-175

High-spin terminating bands in heavy nuclei were first identified in nuclei around Er-158(90). While examples of terminating states have been identified in a number of erbium isotopes, almost nothing is known about the states lying beyond band termination. In the present work, the high-spin structure of Er-156,Er-157,Er-158 has been studied using the Gammasphere spectrometer. The subject of triaxi

Performance of in silico tools for the evaluation of p16INK4a (CDKN2A) variants in CAGI

Correct phenotypic interpretation of variants of unknown significance for cancer-associated genes is a diagnostic challenge as genetic screenings gain in popularity in the next-generation sequencing era. The Critical Assessment of Genome Interpretation (CAGI) experiment aims to test and define the state of the art of genotype-phenotype interpretation. Here, we present the assessment of the CAGI p1

Partner selection and social mobility. The impact of age, socioeconomic origin and place of birth on intergenerational social mobility in 19th century Sweden

This paper studies the relationship between partner selection and socioeconomic status (SES) attainment and mobility in five rural parishes in southern Sweden, 1815-1894. Three different aspects of partner selection are considered: age, social origin (father’s SES), and geographical origin. We use an individual level database containing information on the socioeconomic origin (parental land holdin

Resolving the problem of trapped water in binding cavities : prediction of host–guest binding free energies in the SAMPL5 challenge by funnel metadynamics

The funnel metadynamics method enables rigorous calculation of the potential of mean force along an arbitrary binding path and thereby evaluation of the absolute binding free energy. A problem of such physical paths is that the mechanism characterizing the binding process is not always obvious. In particular, it might involve reorganization of the solvent in the binding site, which is not easily c

Using machine learning to detect events in eye-tracking data

Event detection is a challenging stage in eye movement data analysis. A major drawback of current event detection methods is that parameters have to be adjusted based on eye movement data quality. Here we show that a fully automated classification of raw gaze samples as belonging to fixations, saccades, or other oculomotor events can be achieved using a machine-learning approach. Any already manua

Moisture content prediction of rain-exposed wood: Test and evaluation of a simple numerical model for durability applications

Abstract in FrenchDecay-prediction models can be used to predict the service life of wooden components. However, knowledge of how the material climate, i.e. moisture content and material temperature, varies with time is required. A reliable material climate prediction model is therefore crucial in situations when measurements are not viable. The aim of this paper is to develop and assess the perfo

Scaling of migration and the annual cycle of birds

In a seasonally fluctuating environment migratory birds face decisions relating to how to schedule their main life-history activities, i.e. breeding, moult and migration. The time required to complete any one of these depends on overall size. In this paper I derive scaling functions about how time required for breeding, moult and migration depends on body mass. The sum of these increases with incr

Optimization Of The Blade Profile And Cooling Structure In A Gas Turbine Stage Considering Both The Aerodynamics And Heat Transfer

The need to design high performance of a cooled gas turbine is considered with emphasis made on coupled aerodynamic and heat transfer optimization of the vane, blade, and single stage cooled gas turbine by using a multiobjective optimization method. The aerodynamic profile is designed to have three sections and the cooling structure to consist of a serpentine passage, with a tail transverse channe

Neural coding underlying the cue preference for celestial orientation

Diurnal and nocturnal African dung beetles use celestial cues, such as the sun, the moon, and the polarization pattern, to roll dung balls along straight paths across the savanna. Although nocturnal beetles move in the same manner through the same environment as their diurnal relatives, they do so when light conditions are at least 1 million-fold dimmer. Here, we show, for the first time to our kn

Grain alignment in hexaferrite permanent magnets by compaction at room and elevated temperatures

Shape-controlled precursors enable grain alignment without using an applied magnetic field in the permanent magnet material strontium hexaferrite. The effect is investigated by conducting four series of experiments using different compaction methods: two cold and two hot compactions. The hypothesis is that magnetic short-circuiting will diminish the grain alignment (texture) in cold compacted samp

Human action laws in electronic virtual worlds: An empirical study of path steering performance in VR

This paper is concerned with simple human performance “laws of action” for three classes of tasks—pointing, crossing, and steering, as well as their applications in Virtual Reality research. In comparison to Fitts' law of pointing, the “law of steering”— the quantitative relationship between human temporal performance and the movement path's spatial characteristics—has been notably under investiga

Modellering av klimatförändringar i södra Afrika till år 2050 och dess potentiella konsekvenser för matsäkerheten i området

Kajsa Sennemark Aldman Klimatförändringar och tillgång på mat i södra Afrika vid år 2050 Vi är alla är beroende av tillgång på mat för att överleva. I framtiden kan matproduktionen i världen bli hotad av förändringar i klimatet och därmed bli ett hot för många människors överlevnad. Genom att redan idag försöka ta reda på hur klimatet i framtiden kan komma att se ut, och hur det kan komma att påThe reality of climate change and the substantial impact it can have on our environment and social systems in the future is globally recognized. Intergovernmental Panel on Climate Change (IPCC) have acknowledged that global warming will lead to higher temperature and less precipitation and that it will have an effect on food safety, especially in developing countries. The aim of this study is to i

Valuing Credit Default Swaps with a Structural Approach

Valuing single-name Credit Default Swaps (CDS) is a dicult task since in order to make a fair valuation, one needs to assess the credit risk of the corresponding company. Many dierent models exist when it comes to modelling the credit risk, this report specically focuses on the branch of models named structural models. The aim of this thesis is to, for a number of companies, model the CDSspreads g