2,370 research outputs found

    AME - Asteroseismology Made Easy. Estimating stellar properties by use of scaled models

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    We present a new method to obtain stellar properties for stars exhibiting solar-like oscillations in an easy, fast, and transparent way. The method, called Asteroseismology Made Easy (AME), can determine stellar masses, mean-densities, radii, and surface gravities, as well as estimate ages. In this writing we present AME as a visual and powerful tool which could be useful; in particular in the light of the large number of exoplanets being found. AME consists of a set of figures from which the stellar parameters are deduced. These figures are made from a grid of stellar evolutionary models that cover masses ranging from 0.7 Msun to 1.6 Msun in steps of 0.1 Msun and metallicities in the interval -0.3 dex <= [Fe/H] <= +0.3 dex in increments of 0.1 dex. The stellar evolutionary models are computed using the Modules for Experiments in Stellar Astrophysics (MESA) code with simple input physics. We have compared the results from AME with results for three groups of stars; stars with radii determined from interferometry (and measured parallaxes), stars with radii determined from measurements of their parallaxes (and calculated angular diameters), and stars with results based on the modelling of their individual oscillation frequencies. We find that a comparison of the radii from interferometry to those from AME yield a weighted mean of the fractional differences of just 2%. This is also the level of deviation that we find when we compare the parallax-based radii to the radii determined from AME. The comparison between independently determined stellar parameters and those found using AME show that our method can provide reliable stellar masses, radii, and ages, with median uncertainties in the order of 4%, 2%, and 25% respectively.Comment: 18 pages, 25 figures. To be published in Astronomy & Astrophysic

    Employer Brand Opens up for a Gender Process Model

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    Regardless of a long tradition of legislation, policymaking and practical achievements, the issues ofgender equality and of the segregated labor market still remain a matter of concern in Sweden. Thispaper describes a collaborative process between a research project and an engineering enterprise.It describes the point of departure, based on the concept of employer brand, of a long-term changeprocess and the different phases and activities during an intensive period 2009. The collaborationaimed to develop innovative methods, and to apply them in order to achieve increased genderawareness, and thereby to be able to retain and attract the best labor for tomorrow. Differentapproaches and methods as analogies, anecdotes, and pictures were used to nourish the process.Findings showed that the interactive process contributed to increased awareness. During the processthe enterprise became more conscious of the potential of being a gender equal employe

    Four Poems

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    ARTUR LUNDKVIST OF Solna, Sweden is the author of many books, including Agadir (translated into English by William Jay Smith and Leif Sjoberg, 1979). He has had a major influence on contemporary Swedish literature through both his own writings and his translations

    Diagnosis, treatment, and effects of the crisis in Greece : a “Special Case” or a “Test Case”?

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    Syftet med detta examensarbete Àr att undersöka specialpedagogers/speciallÀrares uppfattningar om sin yrkesroll, elever de möter och det specialpedagogiska verksamhetsomrÄdet i grundskolan. Syftet Àr Àven att studera vad begreppet en skola för alla innebÀr för specialpedagogerna/speciallÀrarna. VÄr metod Àr kvalitativa intervjuer med sju verksamma speciallÀrare/specialpedagoger. VÄrt resultat belyser vi utifrÄn en litteraturöversikt och tre perspektiv inom det specialpedagogiska omrÄdet. Det som har framkommit i vÄr studie genom resultatet och analysen Àr att speciallÀrarna/specialpedagogerna har en mÄngsidig yrkesroll och att de ser en tydlig skillnad mellan deras yrkesroll och en sÄ kallad vanlig lÀrarroll. Den vanligaste arbetsformen informanterna har Àr undervisning i liten grupp, men det förekommer ocksÄ andra arbetssÀtt, exempelvis handledning och testarbete. Oavsett vilken utbildning vÄra informanter har, finns det ingen klar skillnad mellan deras arbetsuppgifter. Eleverna vÄra informanter möter har endera nÄgon form av diagnos eller har skolsvÄrigheter av en eller flera anledningar. Elevernas syn pÄ att de fÄr sÀrskilt stöd Àr enligt informanterna bÄde positiv och negativ. Specialpedagogerna/speciallÀrarna anser att dagens skola inte Àr en skola för alla, med ett undantag. De uttrycker att en skola för alla innebÀr en skola dÀr alla elever trivs och fÄr ta del av skolans resurser, samt har en miljö som passar alla barn. Anledningen till att dagens skola inte Àr en skola för alla Àr att skolan inte tar vara pÄ elevernas förmÄgor och att lÀrarna inte hinner se och hjÀlpa alla barn. Detta beror pÄ att skolans resurser inte Àr tillrÀckliga. I den slutliga diskussionsdelen har vi kommit fram till att de tre specialpedagogiska perspektiven förekommer i dagens skola. Vi har ocksÄ bildat oss en egen uppfattning om vad en skola för alla innebÀr

    Presentation av Core Organic projektet PRODIVA vid fÀltvandring den 8 juni 2016 i Sala

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    Presentation av Core Organic projektet PRODIVA vid en fÀltvandring den 8 juni 2016 i Sala, VÀstmanland, Sverige
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