Results 21 to 30 of about 538,072 (320)

Caracterização fenotípica e genética da produção de leite e do intervalo entre partos em bubalinos da raça Murrah Phenotypic and genetic characterization of the milk yield and calving interval in buffalo of the Murrah breed

Pesquisa Agropecuária Brasileira, 2006
O objetivo deste trabalho foi estimar as correlações, herdabilidades, repetibilidades, tendências genéticas e fenotípicas, e avaliar as distribuições univariada e bivariada da produção de leite e do intervalo entre partos, em fêmeas bubalinas da raça ...
Alcides de Amorim Ramos, Carlos Henrique Mendes Malhado, Paulo Luiz Souza Carneiro, Heraldo César Gonçalves, Danielle Maria Machado Ribeiro Azevedo   +4 more
doaj   +1 more source

On the Analysis of Bivariate Non-stationary Processes

Journal of the Royal Statistical Society Series B: Statistical Methodology, 1973
Summary In this paper, we propose a general definition of the evolutionary (time-dependent) cross-spectrum between two non-stationary processes and describe its physical interpretation. We also study the estimation of the evolutionary cross-spectrum at each time instant t from a single realization of a bivariate process.
Howell Tong, M. B. Priestley
openaire   +3 more sources

Hybrid copula mixed models for combining case-control and cohort studies in meta-analysis of diagnostic tests [PDF]

, 2016
Copula mixed models for trivariate (or bivariate) meta-analysis of diagnostic test accuracy studies accounting (or not) for disease prevalence have been proposed in the biostatistics literature to synthesize information.
Aas K, Aristidis K Nikoloulopoulos, Brenner H, Chen Y, Chen Y, Chu H, Chu H, Demidenko E, Jerant A, Joe H, Joe H, Joe H, Joe H, Kurowicka D, Leeflang MM, Leeflang MMG, Ma X, Nash J, Nelsen RB, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Sklar M, Stober J, Stroud AH, Varin C, Varin C, Xing Y   +28 more
core   +2 more sources

Analysis of Some Linear Dynamic Systems with Bivariate Wavelets [PDF]

المجلة العراقية للعلوم الاحصائية, 2019
There are many statistical methods related to the forecasting of time series without any input variables such as autoregressive integrated moving average (ARIMA models).
Taha Hussein Ali, Mardin Samir Ali
doaj   +1 more source

Application of bivariate meta-analytic approach for pooling effect measures of correlated multiple outcomes in medical research

Clinical Epidemiology and Global Health, 2022
Background: Multivariate meta-analysis is used when multiple correlated outcomes are reported in a systematic review. This study explored the application of multivariate meta-analysis in such a context. The objectives of the present study were to compare
Deepthy M.S., Harichandrakumar K.T., Sreejith Parameswaran, Tamilarasu Kadhiravan, N. Sreekumaran Nair   +4 more
doaj   +1 more source

A vine copula mixed effect model for trivariate meta-analysis of diagnostic test accuracy studies accounting for disease prevalence [PDF]

, 2015
A bivariate copula mixed model has been recently proposed to synthesize diagnostic test accuracy studies and it has been shown that it is superior to the standard generalized linear mixed model in this context.
Aas K, Aristidis K Nikoloulopoulos, Brenner H, Chu H, Chu H, Demidenko E, Genest C, Genest C, Genest C, Hamza TH, Hoyer A, Hua L, Hult H, Joe H, Joe H, Joe H, Joe H, Joe H, Karageorgopoulos DE, Kurowicka D, Kuss O, Leeflang MMG, Leeflang MMG, Ma X, Mavridis D, McNeil AJ, Nash JC, Nelsen RB, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Panagiotelis A, Paul M, Serfling RJ, Shen C, Stroud AH, Vuong QH, Ye Y   +41 more
core   +2 more sources

Análise multidimensional de consórcios cenoura-alface sob diferentes combinações de densidades populacionais Multidimensional analysis of carrot-lettuce intercroppings under different combinations of population densities

Pesquisa Agropecuária Brasileira, 2007
Este trabalho teve como objetivo avaliar o desempenho biológico de sistemas consorciados de cenoura e alface, sob diferentes combinações de densidades populacionais, com uso das análises bivariada de variância e envoltória de dados (DEA).
Francisco Bezerra Neto, Eliane Gonçalves Gomes, Glauber Henrique de Sousa Nunes, Aurélio Paes Barros Júnior   +3 more
doaj   +1 more source

Financial and functionality analysis of a biogas plant in Bangladesh

Heliyon, 2022
Installation of a biogas plant in a rural region has become a viable alternative energy source with a variety of health and environmental advantages.
Dilruba Bedana, M. Kamruzzaman, Md Jaber Rana, B.A.A. Mustafi, Rezaul Karim Talukder   +4 more
doaj   +1 more source

Bivariate Entropy Analysis of Electrocardiographic RR–QT Time Series

Entropy, 2020
QT interval variability (QTV) and heart rate variability (HRV) are both accepted biomarkers for cardiovascular events. QTV characterizes the variations in ventricular depolarization and repolarization. It is a predominant element of HRV.
Bo Shi, Mohammod Abdul Motin, Xinpei Wang, Chandan Karmakar, Peng Li   +4 more
doaj   +1 more source

Chain Plot: A Tool for Exploiting Bivariate Temporal Structures [PDF]

, 2004
In this paper we present a graphical tool useful for visualizing the cyclic behaviour of bivariate time series. We investigate its properties and link it to the asymmetry of the two variables concerned.
A Zempléni, Bloomfield, C.C Taylor, Makra, Schmid, Shepp   +5 more
core   +1 more source