Sökning: "sollerman"

Visar resultat 1 - 5 av 16 avhandlingar innehållade ordet sollerman.

1. 1. Observations of supernovae and their compact objects

   Författare :Jesper Sollerman; Peter Meikle; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Astronomi; Astronomy; astronomi;

   Sammanfattning : .... LÄS MER

3. 2. Kan man räkna med PISA och TIMSS? : Relevansen hos internationella storskaliga mätningar i matematik i en nationell kontext

   Författare :Samuel Sollerman; Astrid Pettersson; Lovisa Sumpter; Christian Lundahl; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; International large-scale assessment; Mathematics; Validity; Validation; Relevance; Assessment; PISA; TIMSS; Mathematics education; matematikämnets didaktik; Mathematics Education;

   Sammanfattning : The overall purpose of the thesis is to contribute to the knowledge of relevance of international large-scale assessments (ILSAs) in mathematics, when these are to be used and interpreted in a national context. If a nation is to engage in ILSAs, draw conclusions from them and act on them, one should be aware of what they are measuring and how well it fits in with the national mathematics education and the mathematics they are trying to teach their students. LÄS MER

4. 3. Hand Injury from Powered Wood Splitters

   Författare :Aron Lindqvist; Olle Nilsson; Bengt Gerdin; Christer Sollerman; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Wood splitter; Wedge splitter; Screw splitter; Consumer product related injury; Agricultural injury; Occupational injury; Hand injury; Child injury; Injury prevention; Vedklyv; Kilklyv; Hydraulklyv; Skruvklyv; Arbetsskada; Handskada; Skada barn; Skadeprevention; Plastic surgery; Plastikkirurgi; Hand surgery; Handkirurgi; Orthopaedics; Ortopedi; Occupational medicine; Yrkesmedicin; Plastic Surgery; Plastikkirurgi;

   Sammanfattning : The purpose of this study on hand injury from powered wood splitters was to describe injury epidemiology and anatomy, to rate injury severity, to evaluate the outcome after injury and to describe factors of possible importance for the occurrence of injury.By searching a computerized patient registry, 131 patients injured by wood splitters from 1995 to 2001 were identified. LÄS MER

5. 4. SN 2011dh and the progenitors of Type IIb supernovae

   Författare :Mattias Ergon; Jesper Sollerman; Claes Fransson; Victor P. Utrobin; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; astronomi;

   Sammanfattning : Core-collapse supernovae (SNe) are the observed events following the collapse of the core of evolved massive stars. The gravitational energy released creates a powerful shock that disrupts the star and ejects the heated material into the surrounding circumstellar medium. The observed properties depend on the mass lost by the star, e.g. LÄS MER

7. 5. PTF12os and iPTF13bvn : Two stripped-envelope supernovae discovered by the Palomar Transient Factory

   Författare :Christoffer Fremling; Jesper Sollerman; Ross Church; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; sovernovae;

   Sammanfattning : This thesis is based on research made by the intermediate Palomar Transient Factory [(i)PTF], and it is particularly closely tied to the still ongoing research on the stripped-envelope (SE) supernova (SN), iPTF13bvn (Type Ib), that occurred in the nearby galaxy NGC 5806. This SN was initially thought to have been the explosion of a very massive Wolf-Rayet (WR) star, but I have shown that this is very likely not the case. LÄS MER