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Sökning: WFRF:(Sivertsson Olof)

  • Resultat 1-10 av 12
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1.
  • Al Weswasi, Enes, 1985-, et al. (författare)
  • Does sentence length affect the risk for criminal recidivism? A quasi-experimental study of three policy reforms in Sweden
  • 2023
  • Ingår i: Journal of Experimental Criminology. - : Springer Science and Business Media LLC. - 1573-3750 .- 1572-8315. ; 19:4, s. 971-999
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives This study examines the relationship between incarceration time and post-release recidivism among first-time incarcerated adult offenders.Methods A quasi-experimental design was adopted consisting of three policy reforms that were treated as separate natural experiments. While holding imposed sentence length constant, these policy reforms either decreased or increased the required share of a sentence inmates needed to be incarcerated before being eligible for parole. Data consisted of large-scale administrative records containing all convictions for the Swedish cohorts born in 1958 and later.Results Results indicate that neither increased nor decreased incarceration time had a statistically significant effect on post-release recidivism, irrespective of how recidivism was measured.Conclusions Findings reveal little evidence for incarceration time having a criminogenic or specific preventive effect on post-release recidivism.
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  • Bäckman, Olof, et al. (författare)
  • Criminal convictions and immigrant background 1973–2017 in Sweden – have differences increased or declined?
  • 2021
  • Ingår i: Nordic Journal of Criminology. - 2578-983X .- 2578-9821. ; 22:2, s. 149-168
  • Tidskriftsartikel (refereegranskat)abstract
    • This study investigates Swedish conviction trends by individuals’ immigrant background for the period 1973–2017. The central research question is whether relative differences in conviction levels have increased, declined or remained unchanged over recent decades. This question is examined in part using a traditional cross-sectional approach, and in part using a cohort-based approach. All results are presented by gender, and results for the cohort-based approach also by holding socioeconomic background constant. The results show that conviction levels have decreased, to a greater extent among men than among women, irrespective of immigrant background. The level of overrepresentation among those born in Sweden to foreign-born parents has increased somewhat, while the overrepresentation of those born abroad has decreased towards the end of the period examined.
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  • Cedheim, Erik, et al. (författare)
  • Kelb - A Real-Time Programming Environment for the Sony Aibo
  • 2004
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • Kelb is a new real-time programming environment developed at Uppsala University for the Sony AIBO ERS-210. It is aimed to provide efficiency by introducing a notion of light-weight tasks executing according to well-known real-time scheduling algorithms and resource protocols, while still allowing applications to be developed in a high-level abstract programming language. In this paper we give an overview of the design of Kelb and describe the status of the environment, currently including: a real-time programming language and compiler extending gcc for MIPS with support for time- and event-triggered tasks, a runtime library with support for static and dynamic preemptive scheduling algorithms (e.g. fixed priority and earliest deadline first), and a prototype connection to the Times tool allowing Kelb designs to be analysed for schedulabilty.
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  • Chhotray, Soma, et al. (författare)
  • The Roles of Leadership, Vision, and Empowerment in Born Global Companies
  • 2018
  • Ingår i: Journal of International Entrepreneurship. - New York, NY : Springer-Verlag New York. - 1570-7385 .- 1573-7349. ; 16:1, s. 38-57
  • Tidskriftsartikel (refereegranskat)abstract
    • This article explores the roles of leadership, vision, and empowerment in two Swedish born global companies. Using case studies and interviews with employees and managers, the article examines how managers can lead their companies by creating a vision and empowering their employees. The findings indicate that a company vision should reflect a culture that supports the employees’ daily activities and decisions. A leadership style that features delegation of responsibility and recognition of employee work autonomy empowers employees in a way that can advance the development and internationalization of the born global company, especially in situations when top managers are often away from company headquarters. © 2017 The Author(s)
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  • Sivertsson, Fredrik, 1984- (författare)
  • Criminal Careers in the Long Run : Patterns and Predictions of Criminal Convictions across Age, Time, and Gender
  • 2018
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Why is it that a small proportion of the population accounts for the majority of crime? This question has stimulated a great deal of theoretical and methodological controversy in criminology. In essence, the debate is rooted in different theoretical underpinnings of continuity and change in crime, and the extent to which it is possible to foresee a life of crime by zeroing in on at-risk juvenile offenders. The current thesis explores four contentious empirical issues that may move this debate forward: the long-term predictability of persistent offending in adulthood on the basis of childhood risk factors (Study I); the magnitude of adult-onset offending (Study II); the predictive value of gender for criminal recidivism (Study III); and the association between birth cohort membership and criminal career parameters (Study IV). All four studies employ longitudinal Swedish administrative data, based on cohorts of individuals born between the early 1940s and the mid-1980s, and followed on the basis of detailed conviction data. The thesis also utilizes qualitative life-history narratives with former at-risk juvenile delinquents. The results suggest that theories aiming to explain crime beyond the transition to adulthood should incorporate factors presumed to cause within-individual change, even among high-risk juvenile offenders. Although childhood cumulative risk, including a wide range of individual, family, school, and peer measures, were clearly associated with adult crime, they had limited value for predicting those persistent offenders who eventually ended up in the tail of the crime distribution. Furthermore, although gender is generally one of the main demographic predictors of criminal convictions, the results indicate that it is important to include females for the purpose of understanding continuity and change in adulthood. This is in part because adult-onset offending is more prevalent within the female offending population than within the male offending population and in part because the risk for criminal recidivism among female offenders becomes increasingly similar to that found among male offenders as convictions accumulate over the life span. Finally, the results suggest that the typical criminal career has undergone significant changes both within and across gender groups during the period since the mid-1970s, a period which has witnessed a historical decline in the aggregate conviction rate in Sweden. Taking this into consideration, the employment and extensive analysis of longitudinal multiple cohort data ought to provide a basis for furthering our knowledge on the inherent complexity of crime trends, while at the same time also locating the study of criminal careers in its historical context.
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  • Sivertsson, Fredrik, 1984-, et al. (författare)
  • Participation and Frequency in Criminal Convictions across 25 Successive Birth Cohorts : Collectivity, Polarization, or Convergence?
  • 2021
  • Ingår i: Justice quarterly. - : Informa UK Limited. - 0741-8825 .- 1745-9109. ; 38:6, s. 995-1018
  • Tidskriftsartikel (refereegranskat)abstract
    • Against the backdrop of an overall declining crime trend our overarching objective is to explore whether this development has concealed any degree of divergence between participation and frequency in crime. We employ Swedish longitudinal data comprising 25 complete birth cohorts born between 1960 and 1984 and followed to age 30 using convictions data. The results show a complex pattern of change, by which the crime rate partly conceals divergent processes between participation and frequency. In particular, among the males we find a consistent decrease in the size of the convicted population, whereas the frequency of crimes among convicted offenders has increased across cohorts born during the early 1970s and later. We discuss the results against both behavioral and reactional mechanisms and conclude that future crime trends research should consider a broad range of criminal career parameters which cannot be discerned using aggregate crime data.
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10.
  • Sivertsson, Olof, et al. (författare)
  • A bound on the overlap of same-sized subsets
  • 2008
  • Ingår i: Annals of Combinatorics. - : Springer Science and Business Media LLC. - 0218-0006 .- 0219-3094. ; 12:3, s. 347-352
  • Tidskriftsartikel (refereegranskat)
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