Results 61 to 70 of about 4,423,036 (299)

Learning linear non-Gaussian graphical models with multidirected edges

Journal of Causal Inference, 2021
In this article, we propose a new method to learn the underlying acyclic mixed graph of a linear non-Gaussian structural equation model with given observational data.
Liu Yiheng, Robeva Elina, Wang Huanqing
doaj   +1 more source

Semi-Invariant Terms for Gauged Non-Linear Sigma-Models

, 1999
We determine all the terms that are gauge-invariant up to a total spacetime derivative ("semi-invariant terms") for gauged non-linear sigma models. Assuming that the isotropy subgroup $H$ of the gauge group is compact or semi-simple, we show that (non ...
André Wilch, Barnich, Brandt, de Wit, de Wit, Deser, Dubois-Violette, Dubois-Violette, Henneaux, Hull, Jack, Marc Henneaux, Wess, Witten   +13 more
core   +1 more source

Non-linear models for a gypsum kiln. A comparative analysis [PDF]

, 2002
INTERNATIONAL FEDERATION OF AUTOMATIC CONTROL. WORLD CONGRESS (15.2002.BARCELONA)This paper presents several non-linear models adjusted in order to capture the dynamics of a gypsum kiln.
Bordons Alba, Carlos, Dorado Navas, Fernando   +1 more
core   +1 more source

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

A comparison between Least Squares and Artificial Neural Networks Approaches for Linear and Non Linear Models with Application [PDF]

المجلة العراقية للعلوم الاحصائية, 2012
في هذا البحث تم استخدام أسلوب الشبكات العصبية الاصطناعية لتقدير معلمات نموذج الانحدار الخطي المتعدد، إذ تم وضع خوارزمية لهذا الغرض كما تم توضيح آلية عمل الشبكات العصبية في النماذج غير الخطية ، ولغرض اختبار كفاءة هذا الأسلوب في التقدير تمت مقارنته مع احد ...
doaj   +1 more source

Accelerated Cosmological Models in First-Order Non-Linear Gravity

, 2004
The evidence of the acceleration of universe at present time has lead to investigate modified theories of gravity and alternative theories of gravity, which are able to explain acceleration from a theoretical viewpoint without the need of introducing ...
A. Borowiec, A. Borowiec, A. Frolov, A. Kamenshchik, A. Melchiorri, A. Müller, A.A. Starobinsky, A.D. Dolgov, A.E. Lange, A.G. Riess, A.H. Jaffe, Andrzej Borowiec, C.B. Netterfield, C.L. Bennett, D. Barraco, D.N. Spergel, D.N. Vollick, D.N. Vollick, E. Elizalde, E.E. Flanagan, E.E. Flanagan, G. Dvali, G. Dvali, G. Dvali, G. Magnano, Gianluca Allemandi, H.A. Buchdahl, H.A. Buchdahl, J.P. Duruisseau, K. Freese, L. Verde, M. Ferraris, M. Ferraris, M. Soffel, Mauro Francaviglia, N.W. Halverson, R. Dick, R.R. Caldwell, S. Capozziello, S. Capozziello, S. Nojiri, S. Nojiri, S. Nojiri, S. Nojiri, S. Perlmutter, S. Perlmutter, S. Perlmutter, S.M. Carroll, S.M. Carroll, T. Chiba, X.H. Meng, X.H. Meng, X.H. Meng   +52 more
core   +1 more source

Metastable supersymmetry breaking in N=2 non-linear sigma-models [PDF]

, 2010
We perform a general study of the issue of metastability for supersymmetry-breaking vacua in theories with N=1 and N=2 global supersymmetry. This problem turns out to capture all the important qualitative features of the corresponding question in ...
Jacot, Jean-Claude, Scrucca, Claudio A.
core   +2 more sources

Prevalence and Trajectory of Household Material Hardship Among Children With Advanced Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Families of children with advanced cancer living in poverty experience inferior outcomes including poor parent mental health and worse child quality of life. Household material hardship (HMH: food, housing, transportation, and/or utility insecurity) is a modifiable poverty exposure—and potential intervention target—that ...
Sarah Wright, Morgan A. Paul, Selena Murcia Mendez, Emily Jones, Lucille Lokko, Chelsea Heneghan, Nicholas Purol, Morgan Arnold, Rahela Aziz‐Bose, Colleen A. Kelly, Sandi L. Pruitt, Joanne Wolfe, Kira Bona, Puja J. Umaretiya   +13 more
wiley   +1 more source

Parametrizations of Non-Linear Models

Journal of the Royal Statistical Society Series B: Statistical Methodology, 1982
summary in the literature there have been many suggestions on how to parametrize models. some properties you can seek are (1) stability of variance of the mle; (2) normal likelihood; (3) zero asymptotic skewness of the mle; (4) asymptotic unbiasedness of the mle.
openaire   +2 more sources

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim, Natalie Bradford, David Brain, Sameera Senanayake, Sanjeewa Kularatna, Kate Young, Christine Cashion, Tim Hassall, Susanna Cramb   +8 more
wiley   +1 more source