Results 71 to 80 of about 82,789 (258)

Shifts in tree allometry in a tropical dry forest: implications for above-ground biomass estimation

Botan‪ical Sciences, 2019
Background: Accurate estimations of aboveground biomass (AGB) based on allometric models are needed to implement climate-change mitigation strategies. However, allometry can change with tree size.
Gustavo Ramírez-Ramírez, Luis Ramírez y Avilés, Francisco Javier Solorio-Sánchez, Jorge Augusto Navarro-Alberto, Juan Manuel Dupuy-Rada   +4 more
doaj   +1 more source

The Log Likelihood Ratio in Segmented Regression

The Annals of Statistics, 1975
This paper deals with the asymptotic distribution of the log likelihood ratio statistic in regression models which have different analytical forms in different regions of the domain of the independent variable. It is shown that under suitable identifiability conditions, the asymptotic chi square results of Wilks and Chernoff are applicable. It is shown
openaire   +2 more sources

ALS With and Without Upper Motor Neuron Signs: A Comparative Study Supporting the Gold Coast Criteria

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The Gold Coast criteria permit diagnosis of amyotrophic lateral sclerosis (ALS) even without upper motor neuron (UMN) signs. However, whether ALS patients with UMN signs (ALSwUMN) and those without (ALSwoUMN) share similar characteristics and prognoses remains unclear.
Hee‐Jae Jung, E‐nae Cheong, Jungmin So, Heung‐Won Kang, Yangsean Choi, Eun‐Jae Lee, Hyunjin Kim, Young‐Min Lim   +7 more
wiley   +1 more source

Ultrasonography and the Reorientation of Developmental Hip Dysplasia Research: An NLP-NMF Trend Analysis (1980-2024)

Eurasian Journal of Medicine
Background: Graf’s introduction of hip ultrasonography (US) in the 1980s coincided with a major change in developmental hip dysplasia (DDH) screening and diagnostic practice, with a gradual reduction in reliance on examination- and radiograph-only ...
Recep Taşkin, Sinan Yılar, İbrahim Budak, Fatih Uğur   +3 more
doaj   +1 more source

ASYMPTOTICS AND CONFIDENCE ESTIMATION IN SEGMENTED REGRESSION MODELS

Advances and Applications in Statistics, 2015
Summary: We consider confidence estimation methods for the change point parameter in a clustered segmented regression model with a continuity constraint using least squares estimators of the model parameters. The asymptotic properties of the estimators are first derived, and then these properties are used to demonstrate that the confidence estimation ...
Robinson, R. A., Gill, R. S.
openaire   +2 more sources

Whole‐Body Pattern of Muscle Degeneration and Progression in Sarcoglycanopathies

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterize whole‐body intramuscular fat distribution pattern in patients with sarcoglycanopathies and explore correlations with disease severity, duration and age at onset. Methods Retrospective, cross‐sectional, multicentric study enrolling patients with variants in one of the four sarcoglycan genes who underwent whole‐body ...
Laura Costa‐Comellas, Mauro Monforte, Angel Sanchez‐Montañez, Penélope Romero‐Duque, Elena Pegoraro, Jordi Díaz‐Manera, Dmitry Vlodavets, Lorenzo Maggi, Marco Moscatelli, Adele D‘Amico, Montse Olivé, Jorge Alonso‐Pérez, Giacomo Comi, José Miguel Escudero‐Fernández, Gabriela S. Urcuyo, Anna Pichiecchio, Angela Berardinelli, Kristl G. Claeys, Claudio Bruno, Chiara Panicucci, Sara Bortolani, Eleonora Torchia, Enzo Ricci, Soledad Monges, Jorge A. Bevilacqua, Jorge Diaz‐Jara, Maggie C. Walter, Simone Thiele, Nicoline Løkken, John Vissing, Susana Quijano‐Roy, Robert Y. Carlier, Nicol C. Voermans, Chiara Marini‐Bettolo, Michela Guglieri, Volker Straub, Lea Leonardis, Francina Munell, David Gómez‐Andrés, Giorgio Tasca   +39 more
wiley   +1 more source

Refining the Moderate Inclusion Range of Dried Asian Watermeal (Wolffia globosa) in the Diets of Two-Spotted Crickets (Gryllus bimaculatus): Integrating Segmented Regression and Nutritional Self-Selection

Insects
The integration of rapidly renewable biomass into insect production systems has been proposed as a strategy to improve resource-use efficiency in insect production.
Jamlong Mitchaothai, Rachakris Lertpatarakomol, Achara Lukkananukool, Tassanee Trairatapiwan, Natnaree Kaewsiri, Nils T. Grabowski   +5 more
doaj   +1 more source

Development of a Prediction Model for Progression Risk in High‐Grade Gliomas Based on Habitat Radiomics and Pathomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate the value of constructing models based on habitat radiomics and pathomics for predicting the risk of progression in high‐grade gliomas. Methods This study conducted a retrospective analysis of preoperative magnetic resonance (MR) images and pathological sections from 72 patients diagnosed with high‐grade gliomas (52 ...
Yuchen Zhu, Yuxi Gong, Weilin Xu, Xingjian Sun, Gefei Jiang, Lei Qiu, Kexin Shi, Mengxing Wu, Yinjiao Fei, Jinling Yuan, Jinyan Luo, Yurong Li, Yuandong Cao, Minhong Pan, Shu Zhou   +14 more
wiley   +1 more source

Adaptabilidade e estabilidade do rendimento de grãos de genótipos de feijão Grain yield adaptation and stability of bean genotypes

Pesquisa Agropecuária Brasileira, 1999
Efetuaram-se análises de adaptabilidade e estabilidade do rendimento de grãos de onze genótipos de feijão (Phaseolus vulgaris L.) de ensaios conduzidos em 23 municípios do Rio Grande do Sul, de 1988/89 a 1993/94, compreendendo 72 ambientes, visando ...
Clause Fátima de Brum Piana, Irajá Ferreira Antunes, João Gilberto Corrêa da Silva, Expedito Paulo Silveira   +3 more
doaj   +1 more source

How and to what extent can pensions facilitate increased use of health services by older people: evidence from social pension expansion in rural China

BMC Health Services Research, 2020
Background The proportion of people aged 60 years or over is growing faster than other age groups. Traditionally, retirement has been considered as both a loss to the labour market and an additional economic burden on the nation.
Shanquan Chen, Xi Chen, Stephen Law, Henry Lucas, Shenlan Tang, Qian Long, Lei Xue, Zheng Wang   +7 more
doaj   +1 more source