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Alzhanova-Ericsson, Alla TORCID iD iconorcid.org/0000-0002-1104-6392
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Publications (5 of 5) Show all publications
Alzhanova-Ericsson, A. T., Bergman, C. & Dinnétz, P. (2017). Lecture attendance is a pivotal factor for improving prospective teachers’ academic performance in Teaching and Learning Mathematics. Journal of Further and Higher Education, 41(1), 1-15
Open this publication in new window or tab >>Lecture attendance is a pivotal factor for improving prospective teachers’ academic performance in Teaching and Learning Mathematics
2017 (English)In: Journal of Further and Higher Education, ISSN 0309-877X, E-ISSN 0013-1326, Vol. 41, no 1, p. 1-15Article in journal (Refereed) Published
Abstract [en]

The value and importance of lectures in higher education is part of a modern education discourse worldwide. This study aims to estimate the importance of lectures for prospective teachers of kindergarten, preschool and early primary school. We analysed academic achievements of prospective teachers who had either mandatorily or voluntarily attended lectures in the subject of teaching and learning mathematics. Students’ examination grades in a maths course with mandatory or voluntary lecture attendance were analysed with a logistic model testing the association between lecture attendance requirement and grades. We show that mandatory lecture attendance (1) more than double the odds of students receiving a pass grade when their situated and tacit knowledge was examined and (2) quadrupled the odds of students achieving the highest grade (pass with distinction) when both their understanding of elementary mathematics and their situated and tacit knowledge of teaching and learning mathematics were examined. Our study provides evidence for a significant positive role of lecture attendance for students acquiring skills in Teaching and Learning Mathematics. While attending lectures students receive situated tacit knowledge of the subject which is otherwise difficult, if not impossible, for them to obtain in a different way. The observed improvement may have an additional positive effect in being a step towards overcoming a maths anxiety, which is otherwise relatively common among prospective teachers.

Keywords
collective tacit knowledge, explicit knowledge, logistic model, natural sciences, situated knowledge
National Category
Educational Sciences
Identifiers
urn:nbn:se:sh:diva-26536 (URN)10.1080/0309877X.2014.1000277 (DOI)000396689200001 ()2-s2.0-84923273704 (Scopus ID)
Available from: 2015-03-06 Created: 2015-03-06 Last updated: 2018-11-13Bibliographically approved
Alzhanova-Ericsson, A. T. T., Demetri, M., Dimiter-Taikon, A., Dimiter-Taikon, K., Mashkova, E. P. & Rodell Olgac, C. (2014). Multimodal matematikdidaktik bland romska elever i Sverige och Ryssland. Nämnaren : tidskrift för matematikundervisning, 191(41(3)), 43-47
Open this publication in new window or tab >>Multimodal matematikdidaktik bland romska elever i Sverige och Ryssland
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2014 (Swedish)In: Nämnaren : tidskrift för matematikundervisning, ISSN 0348-2723, Vol. 191, no 41(3), p. 43-47Article in journal (Other academic) Published
Place, publisher, year, edition, pages
Göteborg: Nationellt centrum för matematikutbildning (NCM), 2014
Keywords
paper size standard A4, fraction (mathematics), mother tongue, A4 ark, SI, bråktal, modersmål
National Category
Educational Sciences
Research subject
Baltic and East European studies
Identifiers
urn:nbn:se:sh:diva-24608 (URN)
Available from: 2014-09-17 Created: 2014-09-17 Last updated: 2017-12-05Bibliographically approved
Sun, X., Zhao, J., Kylberg, K., Soop, T., Palka, K., Sonnhammer, E., . . . Daneholt, B. (2004). Conspicuous accumulation of transcription elongation repressor hrp130/CA150 on the intron-rich Balbiani ring 3 gene. Chromosoma, 113(5), 244-257
Open this publication in new window or tab >>Conspicuous accumulation of transcription elongation repressor hrp130/CA150 on the intron-rich Balbiani ring 3 gene
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2004 (English)In: Chromosoma, ISSN 0009-5915, E-ISSN 1432-0886, Vol. 113, no 5, p. 244-257Article in journal (Refereed) Published
Abstract [en]

Chromosomal puffs on the polytene chromosomes in the dipteran Chironomus tentans offer the possibility of comparing the appearance of RNA-binding proteins at different transcription sites. We raised a monoclonal antibody that recognized a 130 kDa protein, designated hrp130. Immunocytological analysis of isolated chromosomes showed that hrp130 is heavily accumulated in a specific puff, called Balbiani ring 3; only occasionally is hrp130 abundant in one or two additional puffs on other chromosomes. The immunolabeling was sensitive to RNase treatment, suggesting that hrp130 is associated with nascent ribonucleoproteins. As shown by immunoelectron microscopy hrp130 is distributed along the active BR3 genes. The full sequence of hrp130 was determined by cDNA cloning. The protein comprises 1028 amino acids and contains three WW domains in the N-terminal half and six FF domains in the C-terminal half of the molecule. The protein is conserved from Caenorhabditis elegans to mammals; the human homolog is known as the transcription elongation repressor CA150. We propose that the abundance of hrp130/CA150 in BR3 is connected with the exceptionally high level of splicing in this locus and that hrp130/CA150 adjusts the transcription rate to the numerous splicing events taking place along the gene to ensure proper splicing.

National Category
Biochemistry and Molecular Biology
Identifiers
urn:nbn:se:sh:diva-14411 (URN)10.1007/s00412-004-0314-4 (DOI)000224733400004 ()
Available from: 2011-12-22 Created: 2011-12-22 Last updated: 2017-12-08Bibliographically approved
Soop, T., Nashchekin, D., Zhao, J., Sun, X., Alzhanova-Ericsson, A. T., Björkroth, B., . . . Daneholt, B. (2003). A p50-like Y-box protein with a putative translational role becomes associated with pre-mRNA concomitant with transcription. Journal of Cell Science, 116(8), 1493-1503
Open this publication in new window or tab >>A p50-like Y-box protein with a putative translational role becomes associated with pre-mRNA concomitant with transcription
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2003 (English)In: Journal of Cell Science, ISSN 0021-9533, E-ISSN 1477-9137, Vol. 116, no 8, p. 1493-1503Article in journal (Refereed) Published
Abstract [en]

In vertebrates free messenger ribonucleoprotein (RNP) particles and polysomes contain an abundant Y-box protein called p50 (YB-1), which regulates translation, presumably by affecting the packaging of the RNA. Here, we have identified a p50-like protein in the dipteran Chironomus tentans and studied its relation with the biogenesis of mRNA in larval salivary glands. The salivary gland cells contain polytene chromosomes with the transcriptionally active regions blown up as puffs. A few giant puffs, called Balbiani rings (BRs), generate a transcription product, a large RNP particle, which can be visualised (with the electron microscope) during its assembly on the gene and during its transport to and through the nuclear pores. The p50-like protein studied, designated Ct-p40/50 (or p40/50 for short), was shown to contain a central cold-shock domain, an alanine- and proline-rich N-terminal domain, and a C-terminal domain with alternating acidic and basic regions, an organisation that is characteristic of p50 (YB-1). The p40/50 protein appears in two isoforms, p40 and p50, which contain 264 and 317 amino acids, respectively. The two isoforms share the first 258 amino acids and thus differ in amino-acid sequence only in the region close to the C-terminus. When a polyclonal antibody was raised against p40/50, western blot analysis and immunocytology showed that p40/50 is not only abundant in the cytoplasm but is also present in the nucleus. Immunolabelling of isolated polytene chromosomes showed that p40/50 appears in transcriptionally active regions, including the BRs. Using immunoelectron microscopy we revealed that p40/50 is added along the nascent transcripts and is also present in the released BR RNP particles in the nucleoplasm. Finally, by UV crosslinking in vivo we showed that p40/50 is bound to both nuclear and cytoplasmic poly(A) RNA. We conclude that p40/50 is being added cotranscriptionally along the growing BR pre-mRNA, is released with the processed mRNA into the nucleoplasm and probably remains associated with the mRNA both during nucleocytoplasmic transport and protein synthesis. Given that the p40/p50 protein, presumably with a role in translation, is loaded onto the primary transcript concomitant with transcription, an early programming of the cytoplasmic fate of mRNA is indicated.

National Category
Cell Biology
Identifiers
urn:nbn:se:sh:diva-14412 (URN)10.1242/jcs.00353 (DOI)000182426900011 ()
Available from: 2011-12-22 Created: 2011-12-22 Last updated: 2017-12-08Bibliographically approved
Sun, X., Zhao, J., Jin, S., Palka, K., Visa, N., Aissouni, Y., . . . Alzhanova-Ericsson, A. T. (2002). A novel protein localized to the fibrillar compartment of the nucleolus and to the brush border of a secretory cell. European Journal of Cell Biology, 81(3), 125-137
Open this publication in new window or tab >>A novel protein localized to the fibrillar compartment of the nucleolus and to the brush border of a secretory cell
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2002 (English)In: European Journal of Cell Biology, ISSN 0171-9335, E-ISSN 1618-1298, Vol. 81, no 3, p. 125-137Article in journal (Refereed) Published
Abstract [en]

We report the identification and molecular characterization of a novel abundant nucleolar protein of the dipteran Chironomus tentans. As shown by Western blot analysis, this protein is present in nuclear extracts in a phosphorylated form with a mobility corresponding to 100 kDa. Therefore, the protein has been termed Chironomus tentans p100, or p100 for short. Analysis of the cDNA-derived primary structure of p100 indicates a protein that contains a combination of structural domains which could be involved in interactions with proteins and nucleic acids: twelve alternating acidic and basic repeats, a glycine-arginine-rich domain and a region with two zinc fingers of the C4-type. Acidic and basic repeats are typical for a group of nonribosomal nucleolar proteins. The best-studied representatives of this group are Nopp140 and nucleolin, proteins with structural and regulatory functions in rDNA transcription. Immunocytology and immunoelectron microscopy of Chironomus tentans salivary gland cells have shown that the p100 protein is located in the fibrillar compartment of the nucleolus, while it is almost absent from the granular compartment and from the nucleoplasm. The p100 protein remains in the nucleolus after removal of RNA and DNA by digestion with nucleases. This indicates that p TOO might be a constituent of the nucleolar proteinaceous framework. Remarkably, p100 is also localized in the brush border in the apical part of the salivary gland cell. The presence of p100 both in the nucleolus and at the apical plasma membrane suggests that it could be involved in coordination of the level of protein production and export from the cell through regulation of the level of rRNA production in tentans the nucleolus.

National Category
Cell Biology
Identifiers
urn:nbn:se:sh:diva-14413 (URN)10.1078/0171-9335-00231 (DOI)000174982800002 ()
Available from: 2011-12-22 Created: 2011-12-22 Last updated: 2017-12-08Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-1104-6392

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