Sử dụng kênh hình trong dạy học Sinh học 10 Trung học phổ thông. Luận văn ThS. Lý luận và phương pháp dạy học bộ môn Sinh học

Title: Sử dụng kênh hình trong dạy học Sinh học 10 Trung học phổ thông. Luận văn ThS. Lý luận và phương pháp dạy học bộ môn Sinh học
Other Titles: Use video channels in teaching Biology 10 High School.
Authors: Mẫn, Thị Hà
Keywords: Sinh học, Dạy và học, Phương tiện nghe nhìn, Sử dụng
Issue Date: 2016
Publisher: H. : Trường Đại học Giáo dục
Description: 113 tr.
URI: http://repository.vnu.edu.vn/handle/VNU_123/59189
Appears in Collections:UEDU - Master Theses

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Multi-class minimax probability machine

This paper investigates the multi-class Minimax Probability Machine (MPM). MPM constructs a binary classifier that provides a worst-case bound on the probability of misclassification of future data points, based on reliable estimates of means and covariance matrices of the classes from the training data points. We propose a method to adapt MPM to multi-class datasets using the one-against-all strategy. And then we introduce an optimal kernel for MPM for each specific dataset found by Genetic Algorithms (GA) [1]. The proposed method was evaluated on stomach cancer data. The obtained results are better and more stable than for using a single kernel. Title:  Multi-class minimax probability machine Authors:  Dang, Tat-Dat; Nguyen, Ha-Nam Keywords:  Genetic algorithms; Minimax probability machine; One-against-all; One-against-one Issue Date:  2009 Publisher:  H:Đại học Quốc gia Hà Nội Abstract:  This paper investigates the multi-class Minim...
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Development and regulation of pedicel abscission in tomato

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To shed unfertilized flowers or ripe fruits, many plant species develop a pedicel abscission zone (AZ), a specialized tissue that develops between the organ and the main body of the plant. Regulation of pedicel abscission is an important agricultural concern because pre-harvest abscission can reduce yields of fruit or grain crops, such as apples, rice, wheat, etc. Tomato has been studied as a model system for abscission, as tomato plants develop a distinct AZ at the midpoint of the pedicel and several tomato mutants, such as jointless, have pedicels that lack an AZ. This mini-review focuses on recent advances in research on the mechanisms regulating tomato pedicel abscission. Molecular genetic studies revealed that three MADS-box transcription factors interactively play a central role in pedicel AZ development. Transcriptome analyses identified activities involved in abscission and also found novel transcription factors that may regulate AZ activities. Another study ide...
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Study of eta-eta ' mixing from measurement of B-(s)(0) -> J/psi eta((')) decay rates

A study of B and B-s(0) meson decays into J/psi eta and J/psi eta' final states is performed using a data set of proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, collected by the LCHb experiment and corresponding to 3.0 fb(-1) of integrated luminosity. The decay B-0 -> J/psi eta' is observed for the first time. The following ratios of branching fractions are measured: B(B-0 -> J psi eta')/B(B-s(0) -> J psi eta') = (2.28 +/- 0.65 (stat) +/- 0.010 (syst) +/- 0.13 (f(s)/f(d)) x 10(-2) , B(B-0 -> J psi eta')/B(B-s(0) -> J psi eta') = (1.85 +/- 0.65 (stat) +/- 0.09 (syst) +/- 0.11 (f(s)/f(d)) x 10(-2) where the third uncertainty is related to the present knowledge of f(s)/f(d), the ratio between the probabilities for a b quark to form a B-s(0) or a B-0 meson. The branching fraction ratios are used to determine the parameters of eta-eta' meson mixing. In addition, the first evidence for the decay B-s(0) -> ps...
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