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| 1002. |
- Persson, Anders
(författare)
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A Depressing Anniversary?
- 2011
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Ingår i: European Voice.
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Tidskriftsartikel (populärvet., debatt m.m.)
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| 1003. |
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| 1004. |
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| 1005. |
- Persson, Anders, 1953-, et al.
(författare)
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A state-of-the-art pipeline for postmortem CT and MRI visualization: from data acquisition to interactive image interpretation at autopsy
- 2011
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Ingår i: Acta Radiologica. - London, United Kingdom : Sage Publications. - 0284-1851 .- 1600-0455. ; 52:5, s. 522-536
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Forskningsöversikt (refereegranskat)abstract
- The importance of autopsy procedures leading to the establishment of the cause of death is well-known. A recent addition to the autopsy work flow is the possibility of conducting postmortem imaging, in its 3D version also called virtual autopsy (VA), using multidetector computed tomography (MDCT) or magnetic resonance imagining (MRI) data from scans of cadavers displayed with direct volume rendering (DVR) 3D techniques. The use of the data and their workflow are presented. Data acquisition was performed and high quality data-sets with submillimeter precision were acquired. New data acquisition techniques such as dualenergy CT (DECT) and quantitative MRI, then were implemented and provided additional information. Particular findings hardly visualized in conventional autopsy can rather easy be seen at the full body CT, such as air distribution, e.g. pneumothorax, pneumopericardium, air embolism, and wound channels. MRI shows natural deaths such as myocardial infarctions. Interactive visualization of these 3D data-sets can provide valuable insight into the corpses and enables non-invasive diagnostic procedures. In postmortem CT imaging, not being limited by a patient depending radiation dose limit the data-sets can, however, be generated with such a high resolution that they become difficult to handle in today’s archive retrieval and interactive visualization systems, specifically in the case of full body scans. To take full advantage of these new technologies the postmortem workflow needs to be tailored to the demands and opportunities that the new technologies allow.
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| 1006. |
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| 1007. |
- Persson, Anders, 1975, et al.
(författare)
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A unified analysis for coded DS-CDMA with equal-gain chip combining in the downlink of OFDM systems
- 2005
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Ingår i: IEEE Transactions on Communications. - 0090-6778 .- 1558-0857. ; 53:2, s. 289-298
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a novel unified analysis for the bit-error rate in the downlink of convolutionally coded and single-user detected multicarrier code-division multiple access (CDMA), multicarrier direct-sequence CDMA, time and frequency-domain spreading CDMA, and orthogonal frequency-division multiple access. Performance is analyzed under the assumption of Hadamard spreading codes, equal-gain chip combining, and a highly correlated frequency-selective Rayleigh-fading channel. Closed-form expressions are presented for the cumulative distribution function, probability distribution function, and moment-generating function for the signal-to-noise plus interference ratio after despreading. The presented results assume error-free channel estimates, a perfectly synchronized receiver, and are found to reasonably well agree with simulation results. © 2005 IEEE.
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| 1008. |
- Persson, Anders, 1982-, et al.
(författare)
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Abrahamavtalens implikationer för fred i Mellanöstern
- 2023
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Ingår i: Statsvetenskaplig Tidskrift. - : Fahlbeckska stiftelsen. - 0039-0747. ; 125:2, s. 423-444
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Tidskriftsartikel (refereegranskat)abstract
- The Abraham Accords, signed by Israel and four Arab states in 2020, were one of President Donald Trump’s most renowned foreign policy successes. They were also one of few of his administration’s policies that enjoyed bipartisan support in the US. But what type of peace has emerged following the Abraham Accords? In what ways do the Abraham Accords go beyond the cold and authoritarian peace that Israel enjoys with Egypt, Jordan and to a certain extent with the Palestinian Authority? Departing from the four dimensions of cold, warm, authoritarian, and democratic peace, this article aims to problematize the peace created after the Abraham Accords. The analysis shows that change in relations between elites and publics during the two years that has followed since the signing of the accords escapes easy categorization and has elements of all four peace dimensions. Trade and tourism have increased significantly, and the United Arab Emirates, Bahrain and Morocco have made alterations in their education about the Holocaust. All this points to a warmer and more recognitional peace than the peace Israel has enjoyed with Egypt and Jordan. However, at the same time, local activists that protest the Abraham Accords are regularly abused. This is done not least with the aid of Israeli cyber technology, which is being exported to three of four Arab states that are part of the Abraham Accords. As we show in the analysis, the new peace and normaliza-tion agreements within the Abraham Accords are part of the modernization strate-gies of the United Arab Emirates, Bahrain, Morocco, Sudan and even Saudi Arabia for the coming decades. These modernization strategies, which include aspects of liberalization as well, shall, with the possible exception of Sudan, not in any way be confused with democratization.
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| 1009. |
- Persson, Anna
(författare)
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Activation Programs, Benefit Take-Up, and Labor Market Attachment
- 2013
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Essay 1 (with Ulrika Vikman): Previous literature shows that activation requirements for welfare participants reduce welfare participation, but the dynamics behind these results have not been fully examined. In this paper we use a rich set of register data covering the entire working age population in a Swedish municipality to study how the introduction of mandatory activation programs aimed at unemployed welfare participants affect the probability of entering and exiting welfare. Our results indicate that the reduction in the number of welfare participants is mainly due to an increase in welfare exits. The effect is larger for unmarried individuals without children and for young individuals. Among the young we also find a reduction in welfare entries. It thus seems that individuals with fewer family responsibilities are more responsive to the reform.Essay 2: We study the impact of a set of labour market programs directed to unemployed welfare participants on criminal behaviour. To isolate the causal effect we exploit the sequential implementation of activation programs in municipalities and districts in Stockholm county. We find that criminal activity increased as a result of the programs. The size and significance levels of the estimates should be interpreted with caution, but we can conclude that the reform did at least not have a mitigating effect on crime. We find no evidence that the effect is larger for financially motivated crime.Essay 3: Given the trend towards more active policies on reducing the take-up of welfare benefits, the consequences of leaving welfare constitutes an important issue. This paper studies disposable income and poverty among welfare leavers in Sweden during 19 years (1990-2008). Using a rich set of register data we can accurately measure disposable income and labor market outcomes. We find that there are large significant differences in post welfare financial situation among those working full time and those who work only a little or not at all. Leavers neither working nor receiving benefits from social insurance are likely to be financially dependent on family members, and are more likely than others to be in poverty. We conclude that leaving welfare is not always associated with becoming financially better off, post welfare well being depend heavily on labor market outcomes.Essay 4 (with Matz Dahlberg and Linna Martén): In 1999, the Swedish government announced one of the largest reforms of the national defense in modern times, which led to closures and significant downsizing of several military bases, as well as large reductions of the workforce. Previous studies have found that workers that have been displaced from their previous employers experience significant earnings declines, even in the long run. In this paper we study the labor market effects of the involuntary job losses following the drastic changes of the Swedish security policy. Using population wide register data we estimate how labor income and unemployment benefit take-up changed among those employed at the affected military bases, relative to workers at unaffected military units. We find a decrease in labor earnings, primarily among civil servants. We find no effect on neither unemployment nor employment, indicating that the drop in earnings is likely to be driven by lower re-employment wages.
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| 1010. |
- Persson, Anders, et al.
(författare)
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Adolfsbergsskolan - folkskola mitt i den mångkulturella byn
- 2001
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I tre fallrapporter från forskningsprojektet Framgångsrikt skolledarskap i olika skolkulturer presenteras resultat från omfattande empiriska undersökningar vid tre skolor. I rapporterna beskrivs och problematiseras skolornas respektive kultur: den aktuella gymnasieskolans kunskapskultur, där bildning kommit att bli ett kännetecken; den utvalda f-9-skolans karriärkultur, utsatt för ett kraftfullt förändringstryck från både elever och från den förvandling av såväl pedagogiska arbetsformer som av lärarnas arbete som nu pågår; slutligen f-6-skolan där en ursprunglig tvångskultur förvandlats till en skolkultur som betonar elevernas sociala och kulturella integration. Detta är emellertid endast bakgrunden till rapporternas egentliga fokus: undersökningen av tre välfungerande skolledares sätt att utöva skolledarskap i olika skolkulturer. Ur ett omfattande undersökningsmaterial växer tre skolledarskap fram. Här finner vi rektorn som är en kulturell insider men som förväntas utöva ett kulturförändrande ledarskap på en synnerligen traditionstyngd skola. Och visionären som har denna kulturförvandling bakom sig och som nu förväntas profilera en gymnasieskola med vikande söktal och som gör det genom att knyta an till skolans humanistiska bildningstradition. Slutligen den kommunikative skolledaren som skyr företeelsen lojalitet och som framgångsrikt lett förvandlingen av en problemtyngd skola till en folkskola mitt i den mångkulturella byn.
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