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Pedestrian and bicyclist flows in accident modelling at intersections. Influence of the length of observational period

Safety performance functions are frequently used to describe the relation of various factors to the number of accidents, often focusing on exposure of vulnerable road users. Those studies require reliable data regarding exposure, but collecting such data is resource demanding, often resulting in short observational periods. This might produce measurement errors, influencing the reliability of the

Reflecting on Evidence-Based Timelines

Project retrospectives can be powerful tools for project teams to collectively identify communication gaps and practices to improve for future projects. However, even if project members take the time for a retrospective, it can be hard to correctly remember and jointly discuss past events in a constructive way. Fact-based timelines that visualize a project's events offer a possible solution.

Studying internal communication in a complex world: Towards an emergent co-worker perspective

Internal communication is often regarded as a management tool that can be organized and used to improve organizational results. This traditional, and simplistic view is problematic since organizational reality is becoming more and more complex and fluid. The aim of this article is to propose an emergent co-worker perspective that can increase our understanding of internal communication in times of

Sounds of male Lake Victoria cichlids vary within and between species and affect female mate preferences

Sound production in fish is widespread and occurs in several contexts, such as species recognition, mate choice, and aggression. However, there is little experimental evidence for the importance of acoustic signals in social contexts and the influence of sound on mating decisions of females. Cichlid fish are known for their bright nuptial coloration, which plays an important role in mate choice an

Phase Behavior of Microemulsions Formulated with Sodium Alkyl Polypropylene Oxide Sulfate and a Cationic Hydrotrope

The partial ternary phase diagram of anionic extended surfactant of alkyl polypropylene oxide sulfate C-12(PO)(4)SO4 alone and combined with the cationic hydrotrope, tetrabutyl ammonium bromide with water and decane were determined under ambient conditions. Middle phase microemulsion was formulated using salinity scans in the dilute region of surfactant/brine/decane. Visual inspection as well as c

Långvarigt utanförskap och bidragsberoende hos unga vuxna

Et konferenspaper som belyser de centrala delarna av min kommande avhandling där effekter av långvarig arbetslöhset och socialbidragsbehov hos unga med omfattande arbetsmarkandsproblematik alltsedan 1990-talet belyses.Texten visar på den omfattande skam och och ovilja till socialbidragsberoende studiens respondenter uttrycker.

Fortunas klädnader : lycka, olycka och risk i det tidigmoderna Sverige

Fortuna’s Guises: Fortune, Misfortune, and Risk in Early Modern Sweden. This dissertation explores learned conceptions of uncertainty and risk during the period stretching approximately between 1560 and 1720. Previous historical overviews of the ideas about risk hold that pre-industrial societies viewed all worldly happenings as emanations of God’s will or other forces lying beyond human control.

Abundance, production and stabilization of microbial biomass under conventional and reduced tillage

Soil tillage practices affect the soil microbial community in various ways, with possible consequences for nitrogen (N) losses, plant growth and soil organic carbon (C) sequestration. As microbes affect soil organic matter (SOM) dynamics largely through their activity, their impact may not be deduced from biomass measurements alone. Moreover, residual microbial tissue is thought to facilitate SOM

Discrete Optimization in Early Vision - Model Tractability Versus Fidelity

Early vision is the process occurring before any semantic interpretation of an image takes place. Motion estimation, object segmentation and detection are all parts of early vision, but recognition is not. Some models in early vision are easy to perform inference with---they are tractable. Others describe the reality well---they have high fidelity. This thesis improves the tractability-fidelity tr

A semiempirical approach to ligand-binding affinities: Dependence on the Hamiltonian and corrections.

We present a combination of semiempirical quantum-mechanical (SQM) calculations in the conductor-like screening model with the MM/GBSA (molecular-mechanics with generalized Born and surface-area solvation) method for ligand-binding affinity calculations. We test three SQM Hamiltonians, AM1, RM1, and PM6, as well as hydrogen-bond corrections and two different dispersion corrections. As test cases,

αTubulin 67C and Ncd Are Essential for Establishing a Cortical Microtubular Network and Formation of the Bicoid mRNA Gradient in Drosophila.

The Bicoid (Bcd) protein gradient in Drosophila serves as a paradigm for gradient formation in textbooks. To explain the generation of the gradient, the ARTS model, which is based on the observation of a bcd mRNA gradient, proposes that the bcd mRNA, localized at the anterior pole at fertilization, migrates along microtubules (MTs) at the cortex to the posterior to form a bcd mRNA gradient which i

Fluid biomarkers in Alzheimer's disease - current concepts

The diagnostic guidelines of Alzheimer's disease (AD) have recently been updated to include brain imaging and cerebrospinal fluid (CSF) biomarkers, with the aim of increasing the certainty of whether a patient has an ongoing AD neuropathologic process or not. The CSF biomarkers total tau (T-tau), hyperphosphorylated tau (P-tau) and the 42 amino acid isoform of amyloid beta (A beta 42) reflect the

Mechanistic insights into perovskite photoluminescence enhancement: light curing with oxygen can boost yield thousandfold

A light-induced photoluminescence (PL) enhancement in surface-deposited methylammonium lead iodide (CH3NH3PbI3) perovskites was investigated in detail using time-resolved luminescence microscopy. We found the PL intensity to increase up to three orders of magnitude upon light illumination with an excitation power density of 0.01-1 W cm(-2). The PL enhancement is accompanied by an increase of the P

Generalized Boundaries from Multiple Image Interpretations

Boundary detection is a fundamental computer vision problem that is essential for a variety of tasks, such as contour and region segmentation, symmetry detection and object recognition and categorization. We propose a generalized formulation for boundary detection, with closed-form solution, applicable to the localization of different types of boundaries, such as object edges in natural images and

Development of a clinical scoring system for assessment of immunosuppression in patients with tuberculosis and HIV infection without access to CD4 cell testing - results from a cross-sectional study in Ethiopia.

Background : Currently, antiretroviral therapy (ART) is recommended for all HIV-positive patients with tuberculosis (TB). The timing of ART during the course of anti-TB treatment is based on CD4 cell counts. Access to CD4 cell testing is not universally available; this constitutes an obstacle for the provision of ART in low-income countries. Objective : To determine clinical variables associated w