Editorial     

Wincenty Okoń 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1969,15(4):387-389

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Humanities students and epistemological obstacles related to limits     

Anna Sierpińska 《Educational Studies in Mathematics》1987,18(4):371-397

The article presents a report on four 45 minute sessions with a group of 17 year old humanities students. These sessions were the first of a series organised with the aim of exploring the possibilities of elaborating didactical situations that would help the students overcome epistemological obstacles related to limits. Students' attitudes pertinent to the development of the notion of limit, as well as changes of these attitudes, are described and analysed.  相似文献   

Learning styles and lifelong education     

Ryszard Wroczyński 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1974,20(4):464-473

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False memory for orthographically versus semantically similar words in adolescents with dyslexia: a fuzzy-trace theory perspective     

Michał Obidziński  Marek Nieznański 《Annals of dyslexia》2017,67(3):318-332

The presented research was conducted in order to investigate the connections between developmental dyslexia and the functioning of verbatim and gist memory traces—assumed in the fuzzy-trace theory. The participants were 71 high school students (33 with dyslexia and 38 without learning difficulties). The modified procedure and multinomial model of Stahl and Klauer (simplified conjoint recognition model) was used to collect and analyze data. Results showed statistically significant differences in four of the model parameters: (a) the probability of verbatim trace recollection upon presentation of orthographically similar stimulus was higher in the control than dyslexia group, (b) the probability of verbatim trace recollection upon presentation of semantically similar stimulus was higher in the control than dyslexia group, (c) the probability of gist trace retrieval upon presentation of semantically similar stimulus was higher in the dyslexia than control group, and (d) the probability of gist trace retrieval upon target stimulus presentation (in the semantic condition) was higher in the control than dyslexia group. The obtained results suggest differences of memory functioning in terms of verbatim and gist trace retrieval between people with and without dyslexia on specific, elementary cognitive processes postulated by the fuzzy-trace theory. These can indicate new approaches in the education of persons with developmental dyslexia, focused on specific impairments and the strengths of their memory functioning.  相似文献   

Coexistence of proangiogenic potential and increased MMP-9, TIMP-1, and TIMP-2 levels in the plasma of patients with critical limb ischemia     

Wieczór  Radosław  Wieczór  Anna Maria  Kulwas  Arleta  Pulkowski  Grzegorz  Budzyński  Jacek  Rość  Danuta 《Journal of Zhejiang University. Science. B》2019,20(8):687-692

Journal of Zhejiang University-SCIENCE B - 本研究通过比较间歇性跛行 (IC)...  相似文献   

Investigation of the Painting Idyll Attributed to Henryk Siemiradzki: The Unusual Technology of a Canvas Painting Executed on an Enlarged Photograph     

Dominika Sarkowicz  Anna Klisińska-Kopacz 《文物保护研究》2018,63(5):251-266

The subject of the research is an oil painting entitled Idyll created using an unusual technique. The painting layer was applied on canvas covered with photosensitive medium on which a photograph was developed. The results of the examination of Idyll in the context of its attribution to Henryk Siemiradzki (1843–1902) are discussed. Its atypical technology and the possibility of the artist having used the photographic technique are also considered. X-ray fluorescence spectroscopy, infrared spectroscopy, and scanning electron microscopy were performed to establish the technique and to characterize the pigments and materials used in the painting. The identified pigments and the information provided by analytical photography (UV, X-ray images) were compared with the results of the detailed examination of 56 of Siemiradzki’s oil paintings. Performed analyses revealed that the majority of the features identified in Idyll point to Henryk Siemiradski’s technique.  相似文献   

What publishers can take away from the latest early career researcher research          下载免费PDF全文

David Nicholas  Anthony Watkinson  Abdullah Abrizah  Cherifa Boukacem‐Zeghmouri  Jie Xu  Blanca Rodríguez‐Bravo  Marzena Świgoń  Eti Herman 《Learned Publishing》2018,31(3):249-253

Key points

• Early career researchers (ECRs) consider journals the central form of communication – but are concerned about pressure to publish.
• ECRs want to share but currently accept the closed publishing system because of the need to build a traditional reputation.
• ECRs know – and appear to care – little about publishers but trust them as publishing and reviewing facilitators.
• Editors are criticized for not managing peer review with better selection of reviewers.
• Megajournals are not seen as the future journal form and criticized for lack of selectivity.
• ECRs want open access/science in principle but are circumspect about their contribution to it.
• ResearchGate is a key force for change as ECRs consider it a mainstay communication and reputation platform.

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Mechanism of craquelure pattern formation on panel paintings     

Leszek Krzemień  Michał Łukomski  Łukasz Bratasz  Roman Kozłowski  Marion F. Mecklenburg 《文物保护研究》2016,61(6):324-330

The drying shrinkage accumulation from exposure of freshly prepared gesso layers to relative humidity (RH) cycles was determined to elucidate the mechanism of craquelure pattern formation on panel paintings. The progresive drying shrinkage of the gesso is observed only under the cycles going to high RH levels which bring about transitions from brittle to ductile state of the material. The first incidence of fracture on the gesso layers occurred after a limited number of cycles ranging between a few and 100 for a range of layer thickness between 0.5 and 1?mm. The craquelure patterns stabilised also after a limited number of cycles (30 for the 1-mm thick layer). Upon increase in the gesso layer thickness, the strength of the layer is reduced and the spacing of shrinkage fractures increases. The study demonstrated that craquelure patterns, mimicking historical ones, can be realistically produced in laboratory conditions. Such studies would provide useful information for preparing specimens simulating historic panel paintings and would inform the current efforts on automatic, computer-aided classifications of crack formations on paintings.  相似文献   

Outside the library: Early career researchers and use of alternative information sources in pandemic times     

Eti Herman  David Nicholas  David Clark  Chérifa Boukacem-Zeghmouri  Blanca Rodríguez-Bravo  Abdullah Abrizah  David Sims  Anthony Watkinson  Jie Xu  Galina Serbina  Marzena Świgoń  Hamid R. Jamali  Carol Tenopir  Suzie Allard 《Learned Publishing》2023,36(2):141-155

Presents findings from a study into the attitudes and practices of pandemic-era early career researchers (ECRs) in regard to obtaining access to the formally published scholarly literature, which focused on alternative providers, notably ResearchGate and Sci-Hub. The study is a part of the Harbingers project that has been exploring the work lives and scholarly communication practices of ECRs in pre-pandemic times and during the pandemic, and utilizes data from two rounds of interviews with around 170 ECRs from the sciences and social sciences in eight countries. Findings show that alternative providers, as represented by ResearchGate and Sci-Hub, have become established and appear to be gaining ground. However, there are considerable country- and discipline-associated differences. ECRs' country-specific level of usage of the alternative providers is partly traceable to the adequacy of library provisions, although there are other factors at play in shaping ECRs' attitudes and practices, most notably convenience and time saving, as well as the fact that these platforms have become embedded in the scholarly dashboard. There is a dearth of evidence of the impact of the pandemic on ECRs' ways of obtaining scholarly papers.  相似文献   

Extremely high frequency of autoimmune-predisposing alleles in medieval specimens     

Witas HW  Jedrychowska-Dańska K  Zawicki P 《Journal of Zhejiang University. Science. B》2007,8(7):512-514

The precise etiology and reasons for the increase in incidence of autoimmune disorders still remain unclear, and although both genetic and environmental factors have been proven to shape individual predisposition, it is not known which of the factors, if not both, is responsible for the boom observed during the last decades. In order to establish whether a higher frequency of autoimmune-predisposing alleles may explain this increase we took advantage of ancient DNA methodology to establish the genetic predisposition, conferred by cytotoxic T lymphocyte associated antigen-4 （CTLA4） ＋49A/G and human leukocyte antigens （HLA） DQBI^57, in population inhabiting Poland in the Middle Ages. After successful typing of 42 individuals from a 12th-14th＇s century archeological burial site, we found that frequencies of the predisposing alleles in the medieval population were higher than they are at present, suggesting thus that the recently observed incidence increase results most probably from factors of other than genetic nature.  相似文献