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| 11. |
- Edling, Christofer, et al.
(författare)
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Social skiktning
- 2010
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Ingår i: Ett delat samhälle. - Malmö : Liber. - 9789147090426 ; , s. 8-30
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 14. |
- Edling, Fredrik, 1973-
(författare)
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DIXI – a Hybrid Pixel Detector for X-ray Imaging
- 2004
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Medical X-ray imaging is an important tool in diagnostic radiology. The ionising-radiation dose to the patient is justified by the clinical benefit of the examination. Nonetheless, detectors that operate at even lower doses and provide more information to the radiologist are desired. A hybrid pixel detector has the potential to provide a leap in detector technology as it incorporates a more advanced signal-processing capability than currently used detectors.The DIXI digital detector is a hybrid pixel detector developed for X-ray imaging. It consists of a readout chip and a semiconductor sensor. The division in two parts makes it possible to optimise each part individually. The detector is divided into square pixels with a size of 270 x 270 μm2. DIXI has the ability to count single photons and every readout pixel has two embedded counters to allow the acquisition of two images close in time. A discriminator enables the selection of photons with energies above a preset threshold level.The readout chip Angie has been developed and its performance has been evaluated in terms of noise, threshold variation and capability to perform energy weighted counting. Silicon sensors have been fabricated, and a control system for DIXI has been designed and built. An electroless process for deposition of Ni/Au bumps on the chip and sensor has been optimised as a preparation for the assembly of a complete detector, which is being assembled by flip-chip bonding using anisotropic conductive film.A simulation library for the DIXI detector has been set up and results on the image quality are reported for different exposures and working conditions. A theoretical model for hybrid pixel detectors based on the cascaded linear system theory has been developed. The model can be used to investigate and optimise the detector for different detector configurations and operating conditions.
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| 15. |
- Edling, Fredrik, et al.
(författare)
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Performance of a chip for hybrid pixel detectors with two counters for X-ray imaging
- 2004
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Ingår i: Proceedings of the 5th International Workshop on Radiation Imaging Detectors. - : Elsevier BV. ; , s. 215-220
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Konferensbidrag (refereegranskat)abstract
- A semiconductor hybrid pixel detector for dynamic X-ray imaging is developed. The detector, called DIXI, consists of a semiconductor sensor mounted onto a readout chip. A detector module with a silicon sensor is currently being assembled with the use of anisotropic conductive film as interconnection between the sensor and the readout chip. The basic building block of the detector is in size and consists of 992 square pixel cells arranged in 31 columns and 32 rows. The pixels have a side of . The readout chip is capable of performing photon counting and has an externally adjustable threshold. The readout chip has been characterised by charge injection in the absence of a sensor. The threshold dispersion is measured to 365 e− for hole collection. Even if the chip was not originally designed for electron collection a threshold dispersion of 1650 e− has been achieved. Two counters are implemented in every single pixel cell and the threshold can be changed from one image to the next in order to select different parts of the X-ray spectrum.
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| 16. |
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Ett delat samhälle : makt, intersektionalitet och social skiktning
- 2010. - 1. uppl.
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- Sociologin har ända sedan ämnets grundande sysslat med samma problemställning: Hur ska vi förstå samhällets sociala ojämlikhet och hur påverkar den människors livschanser? Men trots denna gemensamma kärna, finns det inom sociologin en mångfald av teoretiska perspektiv, metodologiska ansatser och olika sätt att se samhället. I denna antologi visar författarna att sociologins pluralism inte ska ses som en svaghet, utan snarare som en tillgång som berikar ämnet. De vill ge en inblick i sociologins djup och bredd – och på så sätt inspirera till fortsatt sociologiskt tänkande!
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Ett delat samhälle - makt, intersektionalitet och social skiktning, 3e uppl.
- 2022
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- Boken ger en inblick i sociologins djup och bredd genom att inspirera till fortsatt tänkande om det delade samhället. I den tredje upplagan har flera kapitel reviderats och boken har utökats med ett nyskrivet kapitel om regionala och geografiska skillnader för att ge ökad förståelse av ojämlikhet och förändring mellan stad och land och inom storstadsregionerna.Sedan sociologin grundades har ämnet sysslat med samma problemställning: Hur ska vi förstå samhällets sociala ojämlikhet och hur påverkar den människors livschanser? Utifrån denna gemensamma kärna har sociologin utvecklat en mångfald av teoretiska perspektiv och metodologiska ansatser för att se samhället.
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| 19. |
- Holme, Petter, et al.
(författare)
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Network bipartivity
- 2003
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Ingår i: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics. - 1063-651X .- 1095-3787. ; 68:5 Pt 2
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Tidskriftsartikel (refereegranskat)abstract
- Systems with two types of agents with a preference for heterophilous interaction produce networks that are more or less close to bipartite. We propose two measures quantifying the notion of bipartivity. The two measures-one well known and natural, but computationally intractable, and the other computationally less complex, but also less intuitive-are examined on model networks that continuously interpolate between bipartite graphs and graphs with many odd circuits. We find that the bipartivity measures increase as we tune the control parameters of the test networks to intuitively increase the bipartivity, and thus conclude that the measures are quite relevant. We also measure and discuss the values of our bipartivity measures for empirical social networks (constructed from professional collaborations, Internet communities, and field surveys). Here we find, as expected, that networks arising from romantic online interaction have high, and professional collaboration networks have low, bipartivity values. In some other cases, probably due to low average degree of the network, the bipartivity measures cannot distinguish between romantic and friendship oriented interaction.
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| 20. |
- Holme, Petter, et al.
(författare)
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Network Bipartivity
- 2003
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Ingår i: Physical Review E. - 1063-651X. ; 68:5, s. 056107-
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Tidskriftsartikel (refereegranskat)
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| 21. |
- Karlsson, Magnus, et al.
(författare)
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Ålder
- 2010
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Ingår i: Ett delat samhälle. - 9789147090426 ; , s. 119-145
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Bokkapitel (refereegranskat)
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| 22. |
- Karlsson, Magnus, et al.
(författare)
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Ålder
- 2016. - 2
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Ingår i: Ett delat samhälle : makt, intersektionalitet och social skiktning - makt, intersektionalitet och social skiktning. - 9789147112821 ; , s. 119-149
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Bokkapitel (populärvet., debatt m.m.)
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| 23. |
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| 24. |
- Liljeros, Fredrik, et al.
(författare)
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The web of human sexual contacts.
- 2001
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Ingår i: Nature. - 0028-0836. ; 411:6840, s. 907-8
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 25. |
- Rostami, Amir, 1981-
(författare)
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Criminal Organizing : Studies in the sociology of organized crime
- 2016
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- What organized crime is and how it can be prevented are two of the key questions in both organized crime research and criminal policy. However, despite many attempts, organized crime research, the criminal justice system and criminal policy have failed to provide a shared and recognized conceptual definition of organized crime, which has opened the door to political interpretations. Organized crime is presented as an objective reality—mostly based on anecdotal empirical evidence and generic descriptions—and has been understood, as being intrinsically different from social organization, and this has been a justification for treating organized crime conceptually separately.In this dissertation, the concept of organized crime is deconstructed and analyzed. Based on five studies and an introductory chapter, I argue that organized crime is an overarching concept based on an abstraction of different underlying concepts, such as gang, mafia, and network, which are in turn semi-overarching and overlapping abstractions of different crime phenomena, such as syndicates, street-gangs, and drug networks. This combination of a generic concept based on underlying concepts, which are themselves subject to similar conceptual difficulties, has given rise to a conceptual confusion surrounding the term and the concept of organized crime. The consequences of this conceptual confusion are not only an issue of semantics, but have implications for our understanding of the nature of criminal collaboration as well as both legal and policy consequences. By combining different observers, methods and empirical materials relating to dimensions of criminal collaboration, I illustrate the strong analogies that exist between forms of criminal collaboration and the theory of social organization.I argue in this dissertation that criminal organizing is not intrinsically different from social organizing. In fact, the dissertation illustrates the existence of strong analogies between patterns of criminal organizing and the elements of social organizations. But depending on time and context, some actions and forms of organizing are defined as criminal, and are then, intentionally or unintentionally, presumed to be intrinsically different from social organizing. Since the basis of my argument is that criminal organizing is not intrinsically different from social organizing, I advocate that the study of organized crime needs to return to the basic principles of social organization in order to understand the emergence of, and the underlying mechanism that gives rise to, the forms of criminal collaboration that we seek to explain. To this end, a new general analytical framework, “criminal organizing”, that brings the different forms of criminal organizations and their dimensions together under a single analytical tool, is proposed as an example of how organizational sociology can advance organized crime research and clarify the chaotic concept of organized crime.
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| 26. |
- Rostami, Amir, et al.
(författare)
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Criminal organizing applying the theory of partial organization to four cases of organized crime
- 2018
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Ingår i: Trends in Organized Crime. - : Springer Science and Business Media LLC. - 1084-4791 .- 1936-4830. ; 21:4, s. 315-342
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Tidskriftsartikel (refereegranskat)abstract
- We explore how the idea of partial organization can provide insights in the study of organized crime. Studying criminal organizing with a theoretical framework used for other social organizing phenomena can help us see the interplay between different forms of criminal collaboration under a single analytical lens, and start a discussion on whether criminal organizing is intrinsically different from other types of social organizing. We analyze four cases of criminal collaboration in Sweden between 1990 and 2015: the Syriac mafia, the Hells Angels Mc Sweden, the street gang Werewolf Legion, and the Hallunda robbery. While the outlaw motorcycle gang, and to a certain extent the street gang, are complete organizations, the mafia is based around and heavily parasitic on other institutions. We have also shown that time-bounded projects are found in the criminal context, with these emerging from strong network relations. Our results show that most of the elements of criminal organizing are not formalized and that partial organization is at least as important and powerful as complete organization.
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| 27. |
- Tumminello, Michele, et al.
(författare)
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The Phenomenology of Specialization of Criminal Suspects
- 2013
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Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 8:5
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Tidskriftsartikel (refereegranskat)abstract
- A criminal career can be either general, with the criminal committing different types of crimes, or specialized, with the criminal committing a specific type of crime. A central problem in the study of crime specialization is to determine, from the perspective of the criminal, which crimes should be considered similar and which crimes should be considered distinct. We study a large set of Swedish suspects to empirically investigate generalist and specialist behavior in crime. We show that there is a large group of suspects who can be described as generalists. At the same time, we observe a non-trivial pattern of specialization across age and gender of suspects. Women are less prone to commit crimes of certain types, and, for instance, are more prone to specialize in crimes related to fraud. We also find evidence of temporal specialization of suspects. Older persons are more specialized than younger ones, and some crime types are preferentially committed by suspects of different ages.
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