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FELs are well known for generating highly coherent light with excellent brilliance. In order to improve FEL coherence we have to follow how coherence evolves along the undulator and determine the factors that influence it the most. This paper presents qualitative coherence features that shine new light on the importance of coherence studies in the design of an FEL. By simulating and then analyzing
A new Grain stream cipher, denoted Grain-128AEAD is presented, with support for authenticated encryption with associated data. The cipher takes a 128-bit key and a 96-bit IV and produces a pseudo random sequence that is used for encryption and authentication of messages. The design is based on Grain-128a but introduces a few changes in order to increase the security and protect against recent crypA new Grain stream cipher, denoted Grain-128AEAD is presented, with support for authenticated encryption with associated data. The cipher takes a 128-bit key and a 96-bit IV and produces a pseudo random sequence that is used for encryption and authentication of messages. The design is based on Grain-128a but introduces a few changes in order to increase the security and protect against recent cryp
A Soft X-ray Laser (SXL) beamline utilising FEL technology is being designed for the Short Pulse Facility (SPF) at the MAX IV Laboratory. A conceptual design study has been started following on the scientific case already prepared in collaboration between several Swedish Universities and driven by a strong (Swedish) user demand. The baseline goal of the SXL beamline is to generate intense and shor
This dissertation explores the public library’s democratic and popular educational role in a time when knowledge- and cultural institutions are affected by changes related to digitalisation. The purpose of the study is to examine how library activities, which in various ways are intended to increase individuals’ digital skills, information literacy and participation in society can be understood an
Using ethnographic data, this paper investigates the techniques used inside pubs, bars and nightclubs to solicit and sustain alcohol consumption among patrons. Focus is on venues with the majority of patrons belonging to the age group of approximately 15-35 years. The paper identifies a number of techniques, both overt and covert, including: alcohol advertising; special offers (e.g. 'Happy Hours'
BackgroundTraumatized refugees with comorbid pain report more severe posttraumatic stress disorder (PTSD), respond less well to PTSD-focused treatments, and exhibit greater disability. A mutually maintaining relationship may exist between pain and PTSD, that may be partly accounted for by depression, but no prior studies have tested this assumption in traumatized refugees.Method Self-report measur
Alongside harm avoidance, incompleteness and disgust have been proposed as important emotion-related motivators underlying the symptoms of obsessive-compulsive disorder (OCD). The aim of the present study was to investigate the validity of self-report and interview-based measures of these constructs in youth with OCD (N=100) and anxiety disorders (N=96). All participants completed self-report meas
Managing inventories, and thereby material flows, is of key importance for achieving efficient and sustainable supply chains. Green inventory management is characterized by complementing the traditional economic (cost) focus with environmental (emissions) considerations. In this chapter we identify and discuss key questions and challenges for green inventory management research. We do so by catego
The design of the 3 GeV linac for the MAX IV facility was done to provide the ability to host a future FEL in the hard X-ray as well as in the soft X-ray range. The linear accelerator, with its two bunch compressors, is now under commissioning. Through the years increasing details for the actual FEL have been discussed and presented. In parallel a steering group for the science case for a Swedish
