Results 91 to 100 of about 18,144,236 (296)

Some characteristics of tensor-variate skew-normal distribution and its application in image analysis [PDF]

Journal of Mahani Mathematical Research
In recent years, due to the increasing growth of technology and new technologies, data is obtained in more complex structures as the main component in analysis. One of these complex structures is tensors. Therefore, in order to answer this need (analysis
Seyed Ali Asgar Tajadod, Fatemeh Yousefzadeh, R.B. Arellano-Valle, Sara Jomhoori   +3 more
doaj   +1 more source

On simulated EM algorithms

, 2000
The EM algorithm is a popular and useful algorithm for finding the maximum likelihood estimator in incomplete data problems. Each iteration of the algorithm consists of two simple steps: An E-step, in which a conditional expectation is calculated, and an
An E-step, S��ren Feodor Nielsen, Søren Feodor Nielsen, The Em Algorithm (cf Dempster   +3 more
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Zwitterionic Polymer Coating Enabled Chronic Dopamine Sensing and Electrophysiology Recording in Free‐Moving Mice

Advanced Healthcare Materials, EarlyView.
Application of a zwitterionic poly(sulfobetaine methacrylate) (PSB) coating to microelectrode arrays and Ag/AgCl reference electrodes effectively inhibits biofouling and structural degradation. This strategy successfully enables simultaneous, long‐term electrophysiological recording and dopamine sensing in freely behaving mice, facilitating ...
Bingchen Wu, Cort Thompson, Thomas Deakin, Yan Xu, Colleen A. McClung, Xinyan Tracy Cui   +5 more
wiley   +1 more source

Joint Longitudinal-Survival Modelling of Childhood Leukemia Using EM Algorithm

Proceedings of the International Conference on Applied Innovations in IT
This Study aims to assess the impact of certain clinical factors on children with leukemia by employing The Joint Model for Longitudinal and survival data, using the Expectation–Maximization (EM) algorithm for parameter estimation.
Anwar Dakhel Handool Al-Aaidy, Suhad Ali Shaheed al-Tamimi   +1 more
doaj   +1 more source

Achieving the oracle property of OEM with nonconvex penalties

Statistical Theory and Related Fields, 2017
Thepenalised least square estimator of non-convex penalties such as the smoothly clipped absolute deviation (SCAD) and the minimax concave penalty (MCP) is highly nonlinear and has many local optima.
Shifeng Xiong, Bin Dai, Peter Z. G. Qian
doaj   +1 more source

Aplicação do Firefly Algorithm para otimização estrutural de parâmetros de pórticos planos submetidos à flexão composta com imposição de restrições [PDF]

, 2014
TCC (graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. Engenharia Civil.Por mais experiente que seja um engenheiro estrutural e por mais seguras que sejam suas estruturas, nem sempre essas estruturas serão as mais efetivas ...
Silveira, Ricardo
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Comprehensive In Vitro Profiling Demonstrates Successful Immune Evasion of Bioengineered Immune‐Shielded Heart Valves

Advanced Healthcare Materials, EarlyView.
Living donor heart valves offer superior durability for pediatric patients but trigger immune rejection. Lentiviral delivery of viral immune‐evasion genes US2 and Serpin b9 into donor valve cells and valve tissue suppresses HLA expression, reduces PBMC clustering and cytotoxic killing, and induces transcriptional immune‐tolerance programs, paving the ...
Abraham van Wijk, Leanne Van den Berg, Isa B. M. Velraeds, Valentina Osorio Zuluaga, Emma T. M. Peereboom, Martijn J. W. E. Rabelink, Arnaud Zaldumbide, Rob C. Hoeben, Marie‐Jose T. H. Goumans, Eric Spierings, Carlijn V. C. Bouten, Marijn C. Peters   +11 more
wiley   +1 more source

Urn-based models for dependent credit risks and their calibration through EM algorithm [PDF]

In this contribution we analyze two models for the joint probability of defaults of dependent credit risks that are based on a generalisation of Polya urn scheme.
Riccardo Gusso, Uwe Schmock
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Hydrophobic MFI‐Type Zeolites via Alkali‐Cation‐Induced Defect Healing: Implications for Adsorbent and Catalyst Design

Advanced Materials, EarlyView.
Sub‐stoichiometric amounts of Na+ or K+ enhance defect healing during Silicalite‐1 (MFI) and TS‐1 calcination by promoting Si–O–Si annealing and healing framework vacancies. The resulting defect‐free zeolites are more hydrophobic and show improved butanol/water separation and improved activity and selectivity in the epoxidation of 1‐hexene, offering a ...
Christos Kanteler, Pau Ferri, Francisco Javier Escobar‐Bedia, Álvaro Mayoral, Alejandro Vidal‐Moya, Richard Kendra, Chen Lei, Miguel Palomino, Fernando Rey, Lukáš Grajciar, Christopher James Heard, Pedro Serna, Mercedes Boronat, Cristina Martínez, Manuel Moliner   +14 more
wiley   +1 more source

Inferência por redes neurais da distribuição de tamanho de partícula em reações contínuas de polimerização em emulsão [PDF]

, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2014As exigências do mercado mundial em relação à produtividade e qualidade dos produtos poliméricos tornam ...
Ferrari, Jarbas Cleber
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