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| 2. |
- Bergsten, Linnea, et al.
(författare)
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Designing engaging computer based simulation games for increasing societal resilience to payment system
- 2020
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Ingår i: Proceedings of the 2020 the 3rd International Conference on Computers in Management and Business (ICCMB 2020) Session - Computer and Mobile Technology. - New York : Association for Computing Machinery (ACM). - 9781450376778 ; , s. 166-172, s. 166-172
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Konferensbidrag (refereegranskat)abstract
- Large or lengthy disruptions to the card payment system are threats that can cause crisis in society, especially in countries where other payment options are scarce. This paper presents a study that provides suggestions on how to improve a simulation game used to increase societal resilience to payment system disruptions. Questionnaires and interviews have been used to investigate how 16 participant in crisis exercises experience realism, relevance and validity in such exercises. Suggestions on how to improve the simulation game are provided, such as improvements to the graphical interface and introducing supporting roles from the exercise management.
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| 3. |
- Bergstrom, S., et al.
(författare)
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J-factors for self-interacting dark matter in 20 dwarf spheroidal galaxies
- 2018
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Ingår i: Physical Review D. - 2470-0010 .- 2470-0029. ; 98:4
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Tidskriftsartikel (refereegranskat)abstract
- Dwarf spheroidal galaxies are among the most promising targets for indirect dark matter (DM) searches in gamma rays. The gamma-ray flux from DM annihilation in a dwarf spheroidal galaxy is proportional to the J-factor of the source. The J-factor of a dwarf spheroidal galaxy is the line-of-sight integral of the DM mass density squared times /(0), where sigma(ann)v(rel) is the DM annihilation cross-section times relative velocity v(rel) = vertical bar v(rel)vertical bar angle brackets denote average over v(rel), and (sigma(ann)v(rel)) is the v(rel)-independent part of sigma(ann)v(rel). If sigma(ann)v(rel) is constant in v(rel), J-factors only depend on the DM space distribution in the source. However, if sigma(ann)v(rel) varies with v(rel), as in the presence of DM self-interactions, J-factors also depend on the DM velocity distribution, and on the strength and range of the DM self-interaction. Models for self interacting DM are increasingly important in the study of the small scale clustering of DM, and are compatible with current astronomical and cosmological observations. Here we derive the J-factor of 20 dwarf spheroidal galaxies from stellar kinematic data under the assumption of Yukawa DM self-interactions. J-factors are derived through a profile likelihood approach, assuming either NavarroFrenk-White (NEW) or cored DM profiles. We also compare our results with J-factors derived assuming the same velocity for all DM particles in the target galaxy. We find that this common approximation overestimates the Mactors by up to 1 order of magnitude. J-factors for a sample of DM particle masses and self-interaction coupling constants, as well as for NFW and cored density profiles, are provided electronically, ready to he used in other projects.
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| 4. |
- Björk, Göran, 1956, et al.
(författare)
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Flow of Canadian Basin Deep Water in the Western Eurasian Basin of the Arctic Ocean
- 2010
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Ingår i: Deep Sea Research. - : Elsevier BV. - 0967-0637 .- 1879-0119. ; 57:4, s. 577-586
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Tidskriftsartikel (refereegranskat)abstract
- The LOMROG 2007 expedition targeted the previously unexplored southern part of the Lomonosov Ridge north of Greenland together with a section from the Morris Jesup Rise to Gakkel Ridge. The oceanographic data shows that Canadian Basin Deep Water (CBDW) passes the Lomonosov Ridge in the area of the Intra Basin close to the North Pole and then continues along the ridge towards Greenland and further along its northernmost continental slope. The CBDW is clearly evident as a salinity maximum and oxygen minimum at a depth of about 2000 m. The cross slope sections at the Amundsen Basin side of the Lomonosov Ridge and further south at the Morris Jesup Rise show a sharp frontal structure higher up in the water column between Makarov Basin water and Amundsen Basin water. The frontal structure continues upward into the Atlantic Water up to a depth of about 300 m. The observed water mass division at levels well above the ridge crest indicates a strong topographic steering of the flow and that different water masses tend to pass the ridge guided by ridge-crossing isobaths at local topographic heights and depressions. A rough scaling analysis shows that the extremely steep and sharply turning bathymetry of the Morris Jesup Rise may force the boundary current to separate and generate deep eddies.
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| 5. |
- Blomqvist, Niklas, 1987-
(författare)
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Essays on Labor Economics : The Role of Government in Labor Supply Choices
- 2020
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- "Right to Work Full-time" Policies and Involuntary Part-time EmploymentThis paper investigates the effect of right to full-time policies implemented to decrease involuntary part-time work for public care workers employed by Swedish municipalities. Taking advantage of a staggered decision process, these policies are evaluated using a difference-in-differences approach. Results show that involuntary part-time employment is real and significant, with 10% of part-time employed workers choosing full-time when given the opportunity. The effect mainly comes from a decrease in contracts of <75% of full-time and an increase in contracts of 80% of full-time and above. Further results from the full-time policies show that being more flexible in the choice of hours worked is popular among workers, indicated by an increase in tenure and reduced turnover in municipalities that offer more flexibility in the choice of hours worked.Hours Constraints and Tax Elasticity Estimates - Evidence from Swedish Public Care WorkersThere is a concern that tax elasticity estimates may be downward biased in the presence of optimization frictions for workers. So far, there is limited evidence on the nature of these optimization frictions. This paper provides new insight into one part of the optimization frictions black box, namely hours constraints. Using unique and newly collected data, I exploit a staggered implementation of a policy that gave some public care workers the opportunity to choose their preferred hours of work. Taking advantage of this policy, I estimate differences in tax elasticities between constrained and unconstrained public care workers by comparing bunching at a large tax kink in the Swedish tax system. The empirical evidence points to the conclusion that hours constraints do not affect tax elasticity estimates.Restricting Residence Permits - Short-Run Evidence from a Swedish ReformIn June 2016, the Swedish parliament decided to restrict the granting of permanent residence permits for asylum seekers in Sweden. The new status quo for a refugee is a temporary rather than a permanent residence permit. In a first evaluation of this reform we use a Regression discontinuity analysis in which we follow refugees, aged 25-65, over their first years after arrival. Our main results show that a temporary residence permit increases the probability of working and enrolling in regular education.Mom and Dad Got Jobs: Natural Resources, Economic Activity, and Infant HealthThe impact of local economic shocks, such as the discovery and exploitation of natural resources, on labor markets and health is not well understood. Both positive and negative effects have been documented in the literature. In this paper, we show that the phase before active resource extraction begins directly affects the local economy. This implies that previous estimates – typically based on designs exploiting differences before and after the active phase of extraction begins - may have understated the actual effect of natural resource extraction on outcomes of interest. Using rich data from Sweden combined with differences in the timing and location of mineral exploitation permits, we find a positive impact on female and male employment and earnings and a negative effect on housing prices. Children’s health outcomes are also negatively affected, an effect likely driven by the increase in local economic activity rather than extraction-related externalities.
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| 6. |
- Gambäck, Björn, et al.
(författare)
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An Amharic Corpus for Machine Learning
- 2009
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Ingår i: Proccedings of the 6th World Congress on African Linguistics. - : Matthias Brenzinger.
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Konferensbidrag (refereegranskat)
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| 7. |
- Gambäck, Björn, et al.
(författare)
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Methods for Amharic Part-of-Speech Tagging
- 2009
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Ingår i: EACL 2009 WS on Language Technology for African Languages. - : Guy De Pauw, Gilles-Maurice de Schryver, Lori Levin. - 1932432256
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Konferensbidrag (refereegranskat)
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| 8. |
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| 9. |
- Holmberg, Linnéa, 1983-
(författare)
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Konsten att producera lärande demokrater
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This dissertation builds on the basic question of how individuals are formed and created as citizens in society today, and how individuals construct themselves as citizens in this society. It takes interest in how they are managed to govern themselves through specific constructions of citizenship, and looks at how the exercise of power establishes certain knowledge that affects their view of themselves and generates truths about how they are expected to live their lives. Simultaneously, the dissertation deals with the concept of freedom: what does it mean in contemporary society, how can one be free today, and what dangers might this liberty involve?In a broad sense, the analysis centres on the relationship between education and society; more specifically, it engages with the Swedish education system and its construction and production of desirable citizen subjects. The concrete example deals with the institution called leisure-time centre, with a purpose to investigate and problematise how institutionalised leisure-time is staged and legitimised in Sweden today. The studies take as a common starting point the following research question: how are children and personnel governed discursively in and through leisure-time centres?The first empirical contribution provides historical context for the study. In this, the `problematic leisure-time´ of today is outlined based on education policy documents relevant for children aged 6–13 years. These texts are discussed together with similar texts gathered from two other periods in history in order to give perspective on aspects of the leisure-time centre that may seem obvious in our own time.The first separate article investigates how talk about activities in leisure-time centres is couched in terms of meaningfulness and consists of an analysis of the ideological tension between democracy and authority, which the governmental authority, the Swedish Schools Inspectorate (Skolinspektionen), must address in its discursive work. The second article explores how the production of systematic reporting and documentation by personnel in leisure-time centres works through specific self-technologies in the form of confessional practices and which can be said to be primarily about constructing a free but loyal collective subject.The third article problematises the use of democracy as a method to produce specific citizen subjects in leisure-time centres. Children’s councils are analysed, focusing on how different nuances of influence are staged discursively by participating children and personnel. The article highlights how democracy – through pastoral care and in the name of children’s influence – becomes a governmentalising technology that produces an active, responsible and learning citizen.In summary, this dissertation highlights how leisure-time centres are staged and legitimised in Sweden today. The analysis shows how an administration of children and control of the development of society through the autonomous, competent, and voluntarily active individual is apparent; power operates through a perceived freedom in a way that makes the free choice the `right´ choice. With political ideas about forming a forward-looking mentality, children – and personnel – are constructed as a project of learning and improvement.
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| 10. |
- Kleimark, Jonatan, 1982, et al.
(författare)
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Sterically Governed Selectivity in Palladium-Assisted Allylic Alkylation
- 2011
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Ingår i: Organometalics. - : American Chemical Society (ACS). ; 30:2, s. 230-238
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Tidskriftsartikel (refereegranskat)abstract
- The selectivity in the Pd-assisted allylic alkylation has been investigated in a system with a ligand tethered to the allylic moiety. Isolation of (η3-allyl)Pd complexes and stoichiometric reaction with malonate nucleophiles allowed separation of various factors influencing the regioselectivity in a system that cannot undergo apparent rotation. Unexpectedly, trans effects were found to have only a minor influence on the selectivity, whereas changing the tether length could shift the preference from favored internal to dominant terminal attack. DFT-assisted analysis revealed that the dominant selectivity-determining factors are the forced rotation of the allylic moiety and an important steric repulsion from a syn-alkyl substituent.
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