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31.
The selection of students is a critical issuecurrently facing South African higher educationinstitutions. The identification and selection ofdisadvantaged students with the potential to succeedin mathematics- and science-based study is aparticularly pressing problem. The new South Africanhigher education law requires that selection is donein a fair and transparent manner. Selection has to befollowed by adequate support for selected students tosucceed in their study programmes. Issues of accessare closely coupled to issues of retention andsuccess. The research results discussed in this paperillustrate how these issues can be successfullyaddressed and how selection fairness and effectivenessmay be optimised under the constraints of selectionefficiency. An optimal solution can be found bydeveloping test specifications and selection cut-offvalues based on the teaching programme for which theselection is done. The resulting close fit betweenselection testing and teaching after selection leadsto a reasonable expectation of success for selectedstudents in the study programme. Under suchconditions, selection can be seen as a contract toteach at the student's level. 相似文献
32.
Felix de Moya-Anegon Vicente P. Guerrero-Bote Carmen Lopez-Illescas Henk F. Moed 《Journal of Informetrics》2018,12(4):1251-1262
This paper presents a statistical analysis of the relationship between three science indicators applied in earlier bibliometric studies, namely research leadership based on corresponding authorship, international collaboration using international co-authorship data, and field-normalized citation impact. Indicators at the level of countries are extracted from the SIR database created by SCImago Research Group from publication records indexed for Elsevier’s Scopus. The relationship between authorship and citation-based indicators is found to be complex, as it reflects a country’s phase of scientific development and the coverage policy of the database. Moreover, one should distinguish a genuine leadership effect from a purely statistical effect due to fractional counting. Further analyses at the level of institutions and qualitative validation studies are recommended. 相似文献
33.
The aim of the present study was to investigate how situational interest develops over time and how it is related to academic achievement in an active-learning classroom. Five measures of situational interest were administered at critical points in time to 69 polytechnic students during a one-day, problem-based learning session. Results revealed that situational interest significantly increased after the problem stimulus was presented. Subsequently, situational interest gradually decreased but at the end of the day increased again. Testing a path model relating the situational interest measures showed strong (directional) interrelations. Moreover, situational interest was highly predictive for observed achievement-related classroom behaviors. The latter, in turn, proved to be a significant predictor of academic achievement. Aggregating situational interest over the day led to less accurate predictions of achievement-related classroom behaviors and academic achievement. Implications of these findings for situational interest research are discussed. 相似文献
34.
Henk F. Moed 《Journal of Informetrics》2010,4(3):265-277
This paper explores a new indicator of journal citation impact, denoted as source normalized impact per paper (SNIP). It measures a journal's contextual citation impact, taking into account characteristics of its properly defined subject field, especially the frequency at which authors cite other papers in their reference lists, the rapidity of maturing of citation impact, and the extent to which a database used for the assessment covers the field's literature. It further develops Eugene Garfield's notions of a field's ‘citation potential’ defined as the average length of references lists in a field and determining the probability of being cited, and the need in fair performance assessments to correct for differences between subject fields. A journal's subject field is defined as the set of papers citing that journal. SNIP is defined as the ratio of the journal's citation count per paper and the citation potential in its subject field. It aims to allow direct comparison of sources in different subject fields. Citation potential is shown to vary not only between journal subject categories – groupings of journals sharing a research field – or disciplines (e.g., journals in mathematics, engineering and social sciences tend to have lower values than titles in life sciences), but also between journals within the same subject category. For instance, basic journals tend to show higher citation potentials than applied or clinical journals, and journals covering emerging topics higher than periodicals in classical subjects or more general journals. SNIP corrects for such differences. Its strengths and limitations are critically discussed, and suggestions are made for further research. All empirical results are derived from Elsevier's Scopus. 相似文献
35.
Doping and antidoping are socially constructed, evolving and historically contingent phenomena relying on actors agreeing about allowed and deviant behaviour. Therefore, public discourse about doping represents an important part of the history of doping and antidoping. Content analysis of doping discourse in German quality media Der Spiegel und Die Zeit in the 1950s and 1960s shows that public attention for doping was rather low even though awareness increased due to the politicisation of sport and the rise of anabolic doping. Doping does not appear as a particular pressing but solvable problem. Moreover, doping is not linked to West German sport. In ethical terms, doping is perceived negatively. Neither does there exist a general mistrust in the sport bodies nor are sport bodies or sport policy clearly and resolutely requested to act. Therefore, the well-known 1969 article by Brigitte Berendonk marks a qualitative turn in public doping discourse. 相似文献
36.
Patrick Snellings Aryan van der Leij Henk Blok Peter F. de Jong 《Annals of dyslexia》2010,60(2):151-174
This study investigated the role of speech perception accuracy and speed in fluent word decoding of reading disabled (RD)
children. A same-different phoneme discrimination task with natural speech tested the perception of single consonants and
consonant clusters by young but persistent RD children. RD children were slower than chronological age (CA) controls in recognizing
identical sounds, suggesting less distinct phonemic categories. In addition, after controlling for phonetic similarity Tallal’s
(Brain Lang 9:182–198, 1980) fast transitions account of RD children’s speech perception problems was contrasted with Studdert-Kennedy’s (Read Writ Interdiscip
J 15:5–14, 2002) similarity explanation. Results showed no specific RD deficit in perceiving fast transitions. Both phonetic similarity and
fast transitions influenced accurate speech perception for RD children as well as CA controls. 相似文献
37.
Henk Erik Meier Till Utesch Charlotte Raue Christina Uhlenbrock Nabila Chababi Bernd Strauss 《Sport in Society》2019,22(3):476-498
It is commonly assumed that sport plays an important role for national identity. However, empirical research has primarily focused on sport’s role for emotional-affectice rather than cognitive aspects of national identity. Therefore, research presented here explores whether identification with the German national soccer team serves to reinforce ethnic or civic conceptions of national identity. Analyses of a unique dataset conducted during the 2014 FIFA World Cup and the 2016?EURO show that national team identification is an important determinant of national pride and national belonging. Respondents who identify with the national soccer team can adhere to different conceptions of national identity. It seems that national pride and affection as well as conceptions of national identity represent stable attitudes not affected by the success of the national team. Further research should improve conceptual clarity and measurement. 相似文献
38.
TIJAH: Embracing IR Methods in XML Databases 总被引:1,自引:0,他引:1
Johan?ListEmail author Vojkan?Mihajlovi? Georgina?Ramírez Arjen?P.?de?Vries Djoerd?Hiemstra Henk?Ernst?Blok 《Information Retrieval》2005,8(4):547-570
This paper discusses our participation in INEX (the Initiative for the Evaluation of XML Retrieval) using the TIJAH XML-IR system. TIJAHs system design follows a standard layered database architecture, carefully separating the conceptual, logical and physical levels. At the conceptual level, we classify the INEX XPath-based query expressions into three different query patterns. For each pattern, we present its mapping into a query execution strategy. The logical layer exploits score region algebra (SRA) as the basis for query processing. We discuss the region operators used to select and manipulate XML document components. The logical algebra expressions are mapped into efficient relational algebra expressions over a physical representation of the XML document collection using the pre-post numbering scheme. The paper concludes with an analysis of experiments performed with the INEX test collection. 相似文献
39.
40.
Blok Henk 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2004,50(1):39-52
International Review of Education - Although home education is a growing phenomenon in many Western countries, it is almost non-existent in the Netherlands. Under Dutch educational law, children... 相似文献