| 1. |
- Andersson, Åsa, et al.
(författare)
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En etnologisk odyssé till Budapest
- 2001
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Ingår i: FU-Mummel, vt -2001. Etnologiska Institutionen, Göteborgs universitet.
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Tidskriftsartikel (refereegranskat)
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| 2. |
- Dacke, Marie, et al.
(författare)
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A specialized dorsal rim area for polarized light detection in the compound eye of the scarab beetle Pachysoma striatum.
- 2002
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Ingår i: Journal of Comparative Physiology A. - : Springer Science and Business Media LLC. - 1432-1351. ; 188:3, s. 211-216
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Tidskriftsartikel (refereegranskat)abstract
- Many animals have been shown to use the pattern of polarized light in the sky as an optical compass. Specialised photoreceptors are used to analyse this pattern. We here present evidence for an eye design suitable for polarized skylight navigation in the flightless desert scarab Pachysoma striatum. Morphological and electrophysiological studies show that an extensive part of the dorsal eye is equivalent to the dorsal rim area used for polarized light navigation in other insects. A polarization-sensitivity of 12.8 (average) can be recorded from cells sensitive to the ultraviolet spectrum of light. Features commonly known to increase the visual fields of polarization-sensitive photoreceptors, or to decrease their spatial resolution, are not found in the eye of this beetle. We argue that in this insect an optically unspecialised area for polarized light detection allows it not be used exclusively for polarized light navigation.
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| 3. |
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| 4. |
- Hardell, Lennart, et al.
(författare)
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Exposure to pesticides as risk factor for Non-Hodgkin's lymphoma and hairy cell leukemia : Pooled analysis of two Swedish case-control studies
- 2002
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Ingår i: Leukemia and Lymphoma. - : Informa UK Limited. - 1042-8194 .- 1029-2403. ; 43:5, s. 1043-1049
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Tidskriftsartikel (refereegranskat)abstract
- Increased risk for non-Hodgkin's lymphoma (NHL) following exposure to certain pesticides has previously been reported. To further elucidate the importance of phenoxyacetic acids and other pesticides in the etiology of NHL a pooled analysis was performed on two case-control studies, one on NHL and another on hairy cell leukemia (HCL), a rare subtype of NHL. The studies were population based with cases identified from cancer registry and controls from population registry. Data assessment was ascertained by questionnaires supplemented over the telephone by specially trained interviewers. The pooled analysis of NHL and HCL was based on 515 cases and 1141 controls. Increased risks in univariate analysis were found for subjects exposed to herbicides (OR 1.75, CI 95% 1.26-2.42), insecticides (OR 1.43, CI95% 1.08-1.87), fungicides (OR 3.11, CI 95% 1.56-6.27) and impregnating agents (OR 1.48, CI 95% 1.11-1.96). Among herbicides, significant associations were found for glyphosate (OR 3.04, CI 95% 1.08-8.52) and 4-chloro-2-methyl phenoxyacetic acid (MCPA) (OR 2.62, CI 95% 1.40-4.88). For several categories of pesticides the highest risk was found for exposure during the latest decades before diagnosis. However, in multivariate analyses the only significantly increased risk was for a heterogeneous category of other herbicides than above.
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| 5. |
- Kallin, Lena, 1970-, et al.
(författare)
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Vad ska vi kunna det här för : kommer det på tentan?
- 2001
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Ingår i: Lärarens liv - vision och verklighet. ; , s. 141-156
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Konferensbidrag (refereegranskat)abstract
- Vi upplever att studenternas attityd till studier och kunskap har förändrats. I mycket högre utsträckning än tidigare tvingas vi, vilket kan kännas både positivt och negativt, som lärare att motivera studenterna. Dels måste den aktuella kursen ges ett berättigande och dels måste enskilda teoriavsnitt troliggöras med konkreta exempel. I uppsatsen försöker vi identifiera orsaker till och effekter av denna attitydförändring.
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| 6. |
- Kallin Westin, Lena, et al.
(författare)
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Supplemental instruction (SI) : applied on the course object-oriented programming methodology
- 2003
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Rapport (populärvet., debatt m.m.)abstract
- The introduction of the Supplemental Instruction (SI) method to the introductory programming course was initialised by the fact that the rate of students passing the course had been constantly decreasing for the last few years. This, in combination with the decreasing in student admission, made it necessary to further assist the students in some way. This was done during the autumn of 2002 and this paper describes the work concerning the entire SI-project.
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| 7. |
- Kallin Westin, Lena, et al.
(författare)
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Teaching OO Concepts - A new Approach
- 2004
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Ingår i: Proceedings of the 2004 ASEE/IEEE Frontiers in Education Conference (FIE2004). ; , s. F3C-6
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Konferensbidrag (refereegranskat)abstract
- In recent years, students have become less active, resulting in lower attendance in lectures and practical sessions. In addition to this, the number of students enlisting in our programmes has decreased. Moreover the passing rates for initial courses have dropped severely. This generates problems because the students failing first year courses cannot move on to higher level courses. Not only can this be devastating for individual students, but it can also affect the variety of higher level courses. In an attempt to prevent these problems we focused on the introductory programming courses (CS1) in order to enhance the opportunities for the students to become successful. One action taken was a research project initiated to radically change the way object-oriented programming is taught in CS1. Another action was to introduce the Supplemental Instruction programme (SI). SI helps students master content while they develop and integrate learning and study strategies. This paper will give a short introduction to these actions. Results are presented along with a discussion concerning the problems in teaching object-oriented concepts and problem solving.
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| 8. |
- Kallin Westin, Lena, et al.
(författare)
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Två projekt som hjälper elever bli studenter
- 2003
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Ingår i: En öppen högskola - vilka kunskaper och vilket lärande. ; , s. 34-47
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Konferensbidrag (refereegranskat)abstract
- Studentunderlaget har förändrats markant de senaste åren. Antalet studenter har ökat och deras förkunskaper och motiv till studierna har ändrats. Vi upplever att andelen studenter som läser "för att klara sig" och snabbt få ett välbetalt jobb har ökat medan andelen som kommer hit av genuint ämnesintresse har minskat. En vanlig fråga är "Vad ska vi kunna det här för?".Enskilda lärare har omedvetet successivt anpassat kursinnehåll och genomförande för att kompensera för de ändrade förutsättningarna. Vi anser att förändringar måste diskuteras mer allmänt och på institutions-/universitetsnivå. Ska kursinnehållet anpassas och vem ska ta ansvar för att det blir rimliga justeringar?
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| 9. |
- Nordström, Marie, et al.
(författare)
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Concentrations of Organochlorines Related to Titers to Epstein-Barr Virus Early Antigen IgG as Risk Factors for Hairy Cell Leukemia
- 2000
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Ingår i: Environmental Health Perspectives. ; 108:5, s. 441-5
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Tidskriftsartikel (refereegranskat)abstract
- Hairy cell leukemia (HCL) is a rare chronic B-cell malignancy that, according to modern classifications, is a subgroup of non-Hodgkin lymphomas (NHLs) . A rapid increase in incidence of NHL has been reported in many countries. The reasons for this increase are largely unknown, but exposure to organochlorines has been suggested as a risk factor. Epstein-Barr virus is a human herpesvirus that has been associated with certain subgroups of NHL. In this study, we measured lipid adjusted blood concentrations (in nanogram per gram) of 36 congeners of polychlorinated biphenyls (PCBs) , p,p´-dichlorodiphenyldichloroethylene (p,p´-DDE) , hexachlorobenzene (HCB) , and four subgroups of chlordanes (trans-nonachlor, cis-nonachlor, MC6, and oxychlordane) in incident cases of HCL and controls from the general population. We obtained results on organochlorines and antibodies for 54 cases and 54 controls. Titers of antibodies to the Epstein-Barr early antigen and Epstein-Barr nuclear antigen, measured as P107, were correlated to concentrations of organochlorines to evaluate the possibility of an interaction between these factors in the pathogenesis of HCL. We found no significant difference in lipid-adjusted blood concentrations of total PCBs, p,p´-DDE, HCB, or the sum of the chlordanes between cases and controls. Titers of antibodies to Epstein-Barr early antigen IgG 40 were correlated to an increased risk for HCL. This risk was further increased in those with a level above the median value of p,p´-DDE, HCB, or the sum of the chlordanes, suggesting an interaction between Epstein-Barr virus and a higher concentration of these chemicals. We also found increased risk for the sum of immunotoxic PCB group.
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