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Computational aspects of N-mixture models [PDF]

, 2015
The N-mixture model is widely used to estimate the abundance of a population in the presence of unknown detection probability from only a set of counts subject to spatial and temporal replication (Royle, 2004, Biometrics 60,105–115).
Morgan, Byron J. T., Morgan, Byron J T, Dennis, Emily B., Ridout, Martin S.   +3 more
core   +1 more source

Mixture Multilevel SEM vs. Multilevel SEM for comparing structural relations across groups in presence of measurement non-invariance

Frontiers in Psychology
Structural equation modeling (SEM) is commonly used to explore relations between latent variables, such as beliefs and attitudes. However, comparing structural relations across a large number of groups, such as countries or classrooms, can be challenging.
Hongwei Zhao, Jeroen K. Vermunt, Kim De Roover, Kim De Roover   +3 more
doaj   +1 more source

Bone and Soft Tissue Neoplasms in Infants Versus Older Children: A Report From the Cancer in Young People in Canada Program

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background and Aims Infant bone and soft tissue neoplasms present distinct clinical challenges and lack large‐scale data to inform treatment decisions. This study aims to characterize bone and soft tissue neoplasms in infants in Canada and to compare their outcomes with those of older pediatric patients.
Samuel Sassine, Hallie Coltin, Maria Kondyli, Monia Marzouki, Nicolas Prud'homme, Nida Usmani, Rebecca J. Deyell, Lesleigh Abbott, Tony H. Truong, Sapna Oberoi, Ketan Kulkarni, Josée Brossard, Lynette Bowes, Paul Gibson, Sarah McKillop, Roona Sinha, Lillian Sung, Catherine Vezina, Laura Wheaton, Alexandra P. Zorzi, Marie‐Claude Pelland‐Marcotte, Thai Hoa Tran   +21 more
wiley   +1 more source

Underground target detection algorithm based on improved Gaussian mixture model

Gong-kuang zidonghua, 2021
The monitoring video images of underground coal mine have problems such as poor quality, noisy and being susceptible to sudden changes in illumination.
ZHANG Xiaoyan, GUO Haitao
doaj   +1 more source

Testing for homogeneity in mixture models [PDF]

Econometric Theory, 2017
Statistical models of unobserved heterogeneity are typically formalized as mixtures of simple parametric models and interest naturally focuses on testing for homogeneity versus general mixture alternatives. Many tests of this type can be interpreted asC(α) tests, as in Neyman (1959), and shown to be locally asymptotically optimal.
Jiaying Gu, Roger Koenker, Stanislav Volgushev   +2 more
openaire   +6 more sources

Neurocognitive, School‐Based, and Quality of Life Outcomes for Youth With Sickle Cell Disease and Thalassemia: A Scoping Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT The medical burdens of sickle cell disease (SCD) and transfusion‐dependent β‐thalassemia (TDT) are chronic and cumulative, even in children. Yet the effects expand beyond medications and healthcare visits due to their impacts on school attendance, academic performance, and peer engagement.
Mary Ann Etling, Hakim Tokhi, Alexander A. Boucher   +2 more
wiley   +1 more source

Determining the Number of Latent Classes in Single- and Multiphase Growth Mixture Models

, 2019
class enumeration; growth mixture modeling; longitudinal data analysis; model selection; multiphase longitudinal data; stage-sequential ...
김수영
core   +1 more source

Models for the Response of a Mixture

Journal of the Royal Statistical Society Series B: Statistical Methodology, 1968
Summary Care needs to be exercised in the choice of model for a mixture system. The polynomial model, for example, cannot satisfactorily account for components which are inert or have additive effects and its coefficients lose their interpretative value when the variables are the proportions of components in the mixture.
openaire   +2 more sources

Uncovering Inequities: The Role of Social Determinants of Health in Hospitalized Adolescents and Young Adults With Heavy Menstrual Bleeding

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Heavy menstrual bleeding (HMB) is a common condition among adolescents and young adults (AYAs) and is the leading cause of iron deficiency anemia (IDA) in this population. Growing evidence suggests that social determinants of health (SDOH) influence menstrual bleeding patterns, access to care, and treatment. However, no studies have
Maria Carter‐Febres, Cristina Tarango, Ashley Childress, Chunyan Liu, Evan Thomas, Jennifer Pomales, Eric S. Mullins   +6 more
wiley   +1 more source

Joint effects of prenatal PM2.5 and heavy metals on preterm birth: evidence from a nested case–control study in China

Frontiers in Public Health
BackgroundPreterm birth (PTB) is a global health concern. The combined effects of prenatal PM2.5 and heavy metal exposures on PTB risk remain unclear.MethodsA nested case-control study included 111 PTB cases and 124 controls from Chongqing.
Jinxiu Feng, Jinxiu Feng, Ziyi He, Ziyi He, Ziyi He, Ziyi He, Xin Ming, Xin Ming, Xin Ming, Xin Ming, Yunping Yang, Yunping Yang, Yunping Yang, Yannan Li, Yannan Li, Yannan Li, Dong Ting, Dong Ting, Dong Ting, Xinzhen Chen, Xinzhen Chen, Xinzhen Chen, Min Zhang, Min Zhang, Min Zhang, Yankun Wang, Yankun Wang, Yankun Wang, Li Zhou, Wenzheng Zhou, Wenzheng Zhou, Wenzheng Zhou   +31 more
doaj   +1 more source