| 1. |
|
|
| 2. |
- Abelev, B., et al.
(författare)
-
Long-range angular correlations of pi, K and p in p-Pb collisions at root s(NN)=5.02 TeV
- 2013
-
Ingår i: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 726:1-3, s. 164-177
-
Tidskriftsartikel (refereegranskat)abstract
- Angular correlations between unidentified charged trigger particles and various species of charged associated particles (unidentified particles, pions, kaons, protons and antiprotons) are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV in the transverse-momentum range 0.3 < p(T) < 4 GeV/c. The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range vertical bar n(lab)vertical bar < 0.8. Fourier coefficients are extracted from the long-range correlations projected onto the azimuthal angle difference and studied as a function of p(T) and in intervals of event multiplicity. In high-multiplicity events, the second-order coefficient for protons, 4, is observed to be smaller than that for pions, v(2)(pi), up to about p(T) = 2 GeV/c. To reduce correlations due to jets, the per-trigger yield measured in low-multiplicity events is subtracted from that in high-multiplicity events. A two-ridge structure is obtained for all particle species. The Fourier decomposition of this structure shows that the second-order coefficients for pions and kaons are similar. The v(2)(p) is found to be smaller at low P-T and larger at higher p(T) than v(2)(pi), with a crossing occurring at about 2 GeV/c. This is qualitatively similar to the elliptic-flow pattern observed in heavy-ion collisions. A mass ordering effect at low transverse momenta is consistent with expectations from hydrodynamic model calculations assuming a collectively expanding system. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
|
|
| 3. |
|
|
| 4. |
- Abelev, B., et al.
(författare)
-
Two- and three-pion quantum statistics correlations in Pb-Pb collisions at root S-NN=2.76 TeV at the CERN Large Hadron Collider
- 2014
-
Ingår i: Physical Review C (Nuclear Physics). - 0556-2813. ; 89:2
-
Tidskriftsartikel (refereegranskat)abstract
- Correlations induced by quantum statistics are sensitive to the spatiotemporal extent as well as dynamics of particle-emitting sources in heavy-ion collisions. In addition, such correlations can be used to search for the presence of a coherent component of pion production. Two- and three-pion correlations of same and mixed charge are measured at low relative momentum to estimate the coherent fraction of charged pions in Pb-Pb collisions at root S-NN = 2.76 TeV at the CERN Large Hadron Collider with ALICE. The genuine three-pion quantum statistics correlation is found to be suppressed relative to the two-pion correlation based on the assumption of fully chaotic pion emission. The suppression is observed to decrease with triplet momentum. The observed suppression at low triplet momentum may correspond to a coherent fraction in charged-pion emission of 23% +/- 8%.
|
|
| 5. |
- Palmér, Hanna, 1974-, et al.
(författare)
-
Young students posing problem‑solving tasks: what does posing a similar task imply to students?
- 2020
-
Ingår i: ZDM - the International Journal on Mathematics Education. - : Springer Berlin/Heidelberg. - 1863-9690 .- 1863-9704. ; 52:4, s. 743-752
-
Tidskriftsartikel (refereegranskat)abstract
- This paper focuses on problem solving and problem posing in mathematics education with 6-year-olds. After working ona problem-solving activity, the young students were asked to pose a similar task to a friend. This article explores how thestudents interpret the notion of similar. To be able to pose a problem-solving task themselves the students had to changeperspective, from searching for information to providing information, and from searching for a solution to searching for aquestion. Also, to create a similar task the students had to reflect on the original problem-solving task. Thus, their posedtasks shed light on their interpretation of what the original problem-solving task was really about. The results show that thelarge majority of the students included some three-dimensional aspects from the original problem-solving task in their posedtasks. However, the questions they posed varied in terms of whether or not they included mathematical elements.
|
|
| 6. |
- Gauffin, Helena, et al.
(författare)
-
Living with epilepsy accompanied by cognitive difficulties: Young adults experiences
- 2011
-
Ingår i: Epilepsy & Behavior. - : Elsevier. - 1525-5050 .- 1525-5069. ; 22:4, s. 750-758
-
Tidskriftsartikel (refereegranskat)abstract
- Objective: Epilepsy can sometimes be followed by memory impairment. This can result from the underlying cause of epilepsy or from recurrent seizures, or can be a side effect of antiepileptic drugs or a symptom of another disease such as depression. The aim of the study described here was to explore the experience of living with epilepsy and subjective cognitive decline. less thanbrgreater than less thanbrgreater thanMethod: To better understand the deeper meaning of the phenomenon, a qualitative design was chosen. Fourteen adults aged 18-35 took part in focus group interviews. The participants were divided into four groups, two groups of women and two groups of men, and the interviews were conducted according to a semistructured protocol. Transcripts were analyzed in accordance with the content analysis guidelines. less thanbrgreater than less thanbrgreater thanResults: Four themes emerged: "affecting the whole person," "influencing daily life," "affecting relationships," and "meeting ignorance in society." less thanbrgreater than less thanbrgreater thanConclusions: Cognitive decline has a heavy impact on young adults with intractable epilepsy. In contrast to seizures, the cognitive decline is persistent. The themes reflected different hardships faced by the participants. The consequences of living with epilepsy and cognitive impairment concerned education, employment, social life, self-esteem, and hope for the future. The participants were already using strategies to cope with their cognitive decline, but may benefit from help in developing new strategies to better adjust to their memory problems. Development of more educational programs for both people with epilepsy and their relatives could improve their difficult situations. With help, people can learn to adjust their goals in life and live a fulfilling life despite the disease.
|
|
| 7. |
- Aad, G., et al.
(författare)
-
- 2010
-
swepub:Mat__t
|
|
| 8. |
- Sawosz, P., et al.
(författare)
-
Human skull translucency : post mortem studies
- 2016
-
Ingår i: Biomedical Optics Express. - 2156-7085. ; 7:12, s. 5010-5020
-
Tidskriftsartikel (refereegranskat)abstract
- Measurements of optical translucency of human skulls were carried out. An incandescent light source and a CCD camera were used to measure the distribution of light transmitted through the skull in 10 subjects post-mortem. We noticed that intra-individual differences in optical translucency may be up to 100 times but inter-individual translucency differences across the skull reach 105 times. Based on the measurement results, a "theoretical" experiment was simulated. Monte-Carlo calculations were used in order to evaluate the influence of the differences in optical translucency of the skull on results of NIRS measurements. In these calculations a functional stimulation was done, in which the oxyhemoglobin and deoxyhemoglobin concentrations in the brain cortex change by 5 mu M and -5 mu M respectively. The maximal discrepancies between assumed hemoglobin concentration changes and hemoglobin concentration changes estimated with Monte-Carlo simulation may reach 50% depending of the translucency of the skull.
|
|
| 9. |
- Peng, Yanling, et al.
(författare)
-
Range expansion during the Pleistocene drove morphological radiation of the fir genus (Abies, Pinaceae) in the Qinghai-Tibet Plateau and Himalayas
- 2015
-
Ingår i: Botanical journal of the Linnean Society. - : Wiley-Blackwell. - 0024-4074 .- 1095-8339. ; 179:3, s. 444-453
-
Tidskriftsartikel (refereegranskat)abstract
- Range expansion caused by climate oscillations in the past probably promoted morphological radiation in a few plant groups. In this study, we aim to test this hypothesis through phylogeographical analysis of the cold-tolerant fir genus (Abies) in the Qinghai-Tibet Plateau (QTP) and Himalayas, where it comprises 12 described species. We examined sequence variation in two maternally inherited mitochondrial (mt) DNA fragments (nad5-4 and nad7-1) and two paternally inherited plastid DNA fragments (trnS-G and trnL-F) for 733 individuals from 75 populations of the species in a monophyletic group. Only six mtDNA haplotypes were recovered, but five were shared between multiple species and one occurred at a high frequency, providing strong evidence of range expansion. Forty-three plastid DNA haplotypes were detected, 19 of which were shared between species and three occurred at high frequency. Network, mismatch and Bayesian skyline plot analyses of all plastid DNA haplotypes from this clade clearly suggested range expansion. This expansion was dated as having occurred during the longest and most extensive glaciation in the Pleistocene. Our results therefore supported the range expansion hypothesis for this clade of Abies during the Pleistocene; expansion probably drove the morphological radiation of the clade in the QTP and Himalayas, although it remains unclear whether the different morphotypes should be acknowledged as independent, reproductively isolated species.
|
|
| 10. |
-
Vogler to Netzel: Swedish Organ Culture in the 19th Century
- 2021
-
Konstnärligt arbeteabstract
- 2-CD survey of Swedish organ music through the 19th century and into the first decade of the 20th century. Brings together 23 works, on the basis of a wider inventory of the entire century, of which 20 are premiere recordings. Five historical instruments from different stages throughout the period are used, in order to couple the music with the sonic possibilities of each stage: the Gustaf Andersson organ in Östra Husby, the Marcussen organ in Väderstad, the Åkerman organs in Rök and Västervik, as well as the Eskil Lundén organ in Vasakyrkan, Göteborg. A comprehensive booklet discusses works, instruments and the wider culture of organ playing in nineteenth century Sweden. Specific attention is given to organ works by female composers towards the turn of the century 1900.Beside Jonas Lundblad, Ulf Norberg contributes as an organist and Tobias Ringborg performs violin solos in two works.
|
|
