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31.
We investigated the statistical properties of the K-index (Holland, 1996) that can be used to detect copying behavior on a test. A simulation study was conducted to investigate the applicability of the K-index for small, medium, and large datasets. Furthermore, the Type I error rate and the detection rate of this index were compared with the copying index, ω (Wollack, 1997). Several approximations were used to calculate the K-index. Results showed that all approximations were able to hold the Type I error rates below the nominal level. Results further showed that using ω resulted in higher detection rates than the K-indices for small and medium sample sizes (100 and 500 simulees). 相似文献
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Leonardo A. Pasqua Salomão Bueno Guilherme G. Artioli Antônio H. Lancha JR. Monique Matsuda Mônica V. Marquezini 《Journal of sports sciences》2016,34(2):163-170
The purpose of this study was to verify the association between ACTN3 polymorphism and physiological parameters related to endurance performance. A total of 150 healthy male volunteers performed a maximal incremental running test to determine the speeds corresponding to ventilatory threshold (VT) and respiratory compensation point (RCP). Participants were genotyped and divided into terciles based on the analysed variables. Genotype frequencies were compared through χ2 test between lower and higher terciles, with the lowest or highest values of each analysed variable. ACTN3 XX genotype was over-represented in higher tercile for VT and RCP. Odds ratio also showed significantly higher chances of XX individuals to be in higher tercile compared to RR (7.3) and RR + RX (3.5) for VT and compared to RR genotype (8.1) and RR + RX (3.4) for RCP. Thus, XX individuals could attain the VT and RCP at higher speeds, suggesting that they are able to sustain higher running speeds in lower exercise intensity domains. It could result in higher lipid acids oxidation, saving muscle glycogen and delaying the fatigue during prolonged exercises, which could be the advantage mechanism of this genotype to endurance performance. 相似文献
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Leonardo Fuentealba Hernandez Lotte Schenk-Danzinger M. J. Langeveld Per Kirstein Richard D'Aeth R. E. Hennion Fritz Bohnsack Hans Thomae Oskar Anweiler L. J. Pongratz G. De Landsheere Hans Möckelmann 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1961,7(3):358-376
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Francesc Codony Bárbara Adrados Leonardo Martín Pérez Mariana Fittipaldi Jordi Morató 《Journal of Zhejiang University. Science. B》2009,10(12):867-869
The Catabacteriaceae is a new bacterial family with a unique member: Catabacter hongkongensis is a strictly anaerobic, non-sporulating, Gram-positive coccobacillus that is phylogenetically related to some clostridial
clusters. Little is known of its epidemiology and environmental distribution, but the inclusion of its 16S rRNA gene sequence
in GenBank has allowed it to be detected qualitatively. As a first approach for prospective surveys, a real-time polymerase
chain reaction (PCR) procedure to identify C. hongkongensis has been developed. The presence of Catabacteriaceae in 29 water bodies subjected to possible human or animal impact has
been investigated. Four of them were positive. The results confirm that highly polluted water can contain C. hongkongensis. 相似文献
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Science & Education - We argue that teleological thinking plays a central role in biology and, more specifically, in theory of natural selection, and, therefore, the didactic goal cannot be its... 相似文献
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Zeus Leonardo 《Critical Studies in Education》2015,56(1):86-98
This article presents the main terms of the racial contract, as they appear in the subcontracts of Mills’ theory, such as the spatial, epistemological, cognitive subcontracts. It is important to keep in mind that these subcontracts are by no means separate and represent analytical moments of the main contract. Furthermore, other than its institutional form, education is not a separate sphere from the racial contract. Finally, I end with the racial contract’s gaps to determine the possibility of its own demise, which requires the active signing off from the terms of the contract. That is, I sketch ideas about ways to counteract (i.e., counter-write) the racial contract as part of a corrective to the history that interpellates people of color as its targets. Both Whites and people of color have a stake in the rewriting of the contract, where in the end they are imagined as neither Black nor White but free. In this last portion, I spend some text on what Whites’ role may look like in signing off the contract, such as the case of white ‘race traitors’ within the white abolitionist proposal, recast as the ‘epistemological traitor’ in education. 相似文献
38.
Reduced state support of film financing in Europe requires the creation of an efficient market of private cinema financiers. Principal-agent models with and without common consent over film risk show that the two main problems of film financing (high risk and lack of collateral for the borrower) may be solved if the financier achieves economies of scale in costs of capital and is efficient in information gathering. Conversely, the pathology of a market with inefficient financiers includes: film financial rationing, adverse selection, and refusal of financial support to otherwise profitable film projects. From the normative point of view, the creation of efficient financiers would be fostered by institutional changes that promote market thickening and risk spreading (the case of the USA) instead of simple forms of risk shifting (the case of Italy). 相似文献
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Gabriel A. López Jon Sáenz Aritz Leonardo Idoia G. Gurtubay 《Journal of Science Education and Technology》2016,25(4):575-589
The Moodle platform has been used to put into practice an ongoing evaluation of the students’ Physics learning process. The evaluation has been done on the frame of the course General Physics, which is lectured during the first year of the Physics, Mathematics and Electronic Engineering Programmes at the Faculty of Science and Technology of the University of the Basque Country (UPV/EHU). A test bank with more than 1000 multiple-choice questions, including conceptual and numerical problems, has been prepared. Throughout the course, the students have to answer a 10-question multiple-choice test for every one of the blocks the course is divided in and which were previously treated and worked in the theoretical lectures and problem-solving sessions. The tests are automatically corrected by Moodle, and under certain criteria, the corresponding mark is taken into account for the final mark of the course. According to the results obtained from a statistical study of the data on the student performances during the last four academic years, it has been observed that there exists an actual correlation between the marks obtained in the Moodle tests and the final mark of the course. In addition, it could be deduced that students who have passed the Moodle tests increase their possibilities of passing the course by an odds ratio close to 3. 相似文献