Results 1 to 10 of about 8,111,422 (263)

Robust Sparse Canonical Correlation Analysis [PDF]

open access: yesSSRN Electronic Journal, 2014
Canonical correlation analysis (CCA) is a multivariate statistical method which describes the associations between two sets of variables. The objective is to find linear combinations of the variables in each data set having maximal correlation.
Croux, Christophe, Wilms, Ines
core   +6 more sources

Examination of Contagion and Oil Price Volatility on Returns of the Stock Market, Exchange Rate and Gold Price in Iran: VAR-DCC-GARCH, Continuous Wavelet, and Time-Varying Wavelet Approach [PDF]

open access: yesمدلسازی اقتصادسنجی, 2021
The purpose of this study is to investigate the relationship between oil price changes and volatility on stock market, foreign exchange rate, and gold rate, using weekly data from August 2013 to June 2021.
Maryam Nafisi Moghadam, Shahram Fattahi
doaj   +1 more source

Longitudinal canonical correlation analysis

open access: yesJournal of the Royal Statistical Society Series C: Applied Statistics, 2023
AbstractThis paper considers canonical correlation analysis for two longitudinal variables that are possibly sampled at different time resolutions with irregular grids. We modelled trajectories of the multivariate variables using random effects and found the most correlated sets of linear combinations in the latent space.
Seonjoo Lee   +3 more
openaire   +4 more sources

Variations in agromorphological characteristics of IPGRI Cowpea (Vigna unguiculata (L.) Walp.) accessions [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2022
Cowpea (Vigna unguiculata (L.) Walp.) remains an important crop in the tropics. One of its challenges remains the selection and improvement of genotypes to meet location–specific needs.
Ekemini Obok   +3 more
doaj   +1 more source

The Cross-correlation Structure of Tehran Stock Exchange Indexes by Multifractal Detrended Fluctuation Analysis [PDF]

open access: yesتحقیقات مالی, 2012
One of the latest approaches for analyzing the coupled time series is MF-DXA. This technique has been used in many disciplines such as finance. In this paper, we have analyzed Tehran Stock Exchange indexes by MF-DXA and have found a scaling behavior ...
Reza Tehrani   +2 more
doaj   +1 more source

Availability of essential medicines, progress and regional distribution in China: a systematic review and meta-analysis

open access: yesFrontiers in Public Health, 2023
BackgroundEssential medicines are the backbone of healthcare and meet the priority healthcare needs of the population. However, approximately one-third of the global population does not have access to essential medicines.
Miao Zhang   +54 more
doaj   +1 more source

Effect of Soil Aeration and Root Morphology on Yield under Aerated Irrigation

open access: yesAgronomy, 2023
Soil compaction easily causes root hypoxia stress, resulting in poor root growth and the absorption of soil water and nutrients. We hypothesized that aerated irrigation (AI) could enhance nutrient uptake and utilization, thus unlocking the high yield ...
Cuicui Jin   +6 more
doaj   +1 more source

Measuring entrepreneurship determinants: empirical analysis

open access: yesAgricultural and Resource Economics, 2021
Purpose. The aim of this article is to assess the main determinants that affect entrepreneurial activity, and also the mechanism of its regulation in five countries (Ukraine, Romania, Lithuania, Poland, Germany) during the period from 2007 to 2018 ...
Viktoriia Kyfyak   +3 more
doaj   +1 more source

Correlation and path coefficient analysis among agro-morphological and biochemical traits of okra [Abelmoschus esculentus (L.) Moench] genotypes in Ethiopia

open access: yesActa Agriculturae Slovenica, 2020
Thirty six okra genotypes were evaluated for different agro-morphological and biochemical traits at Melkassa Agricultural Research Center, Ethiopia during 2018 main season using 6 x 6 simple lattice design.
Jemal MOHAMMED   +2 more
doaj   +1 more source

Identifying Key Factors Influencing Teaching Quality: A Computational Pedagogy Approach

open access: yesSystems, 2023
Although previous research has explored the correlation between teacher characteristics and teaching quality, effective methods for identifying key factors that influence teaching quality are still lacking.
Dunhong Yao, Jing Lin
doaj   +1 more source

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