Results 71 to 80 of about 17,556,704 (381)

When total variation is additive [PDF]

Proceedings of the American Mathematical Society, 1982
Let f f and g g be continuous functions of bounded variation on [ 0 , 1 ] [0,1] . We use the Dini derivates of f f and g g to give a necessary and sufficient condition that the equation V ( f +
openaire   +2 more sources

Minimizing total variation flow [PDF]

Comptes Rendus de l'Académie des Sciences - Series I - Mathematics, 2000
Summary: We prove existence and uniqueness of weak solutions for the minimizing total variation flow with initial data in \(L^1\) under Neumann boundary conditions. We prove that the \({\mathcal H}^{N-1}\) measure of the boundaries of level sets of the solution decreases with time, as one would expect.
Andreu, F., Ballester, C., Caselles, V., Mazón, J. M.   +3 more
openaire   +3 more sources

Nutritional and Behavioral Intervention for Long‐Term Childhood Acute Leukemia Survivors With Metabolic Syndrome

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Metabolic syndrome (MetS) is a common complication in survivors of childhood acute lymphoblastic and myeloid leukemia (AL), and a major risk factor for premature cardiovascular disease, type‐2‐diabetes, and metabolic dysfunction‐associated steatotic liver disease (MASLD).
Visentin Sandrine, Béliard Sophie, Renard Cécile, Caussy Cyrielle, Hamidou Zeinab, Romano David, Gacem Mélanie, Petit Arnaud, Saultier Paul, Borentain Patrick, Michel Gérard   +10 more
wiley   +1 more source

An Efficient Image Reconstruction Framework Using Total Variation Regularization with Lp-Quasinorm and Group Gradient Sparsity

Information, 2019
The total variation (TV) regularization-based methods are proven to be effective in removing random noise. However, these solutions usually have staircase effects.
Fan Lin, Yingpin Chen, Lingzhi Wang, Yuqun Chen, Wei Zhu, Fei Yu   +5 more
doaj   +1 more source

Blind Image Deblurring via Reweighted Graph Total Variation

, 2017
Blind image deblurring, i.e., deblurring without knowledge of the blur kernel, is a highly ill-posed problem. The problem can be solved in two parts: i) estimate a blur kernel from the blurry image, and ii) given estimated blur kernel, de-convolve blurry
Bai, Yuanchao, Cheung, Gene, Gao, Wen, Liu, Xianming   +3 more
core   +1 more source

Survival for Children Diagnosed With Wilms Tumour (2012–2022) Registered in the UK and Ireland Improving Population Outcomes for Renal Tumours of Childhood (IMPORT) Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The Improving Population Outcomes for Renal Tumours of childhood (IMPORT) is a prospective clinical observational study capturing detailed demographic and outcome data on children and young people diagnosed with renal tumours in the United Kingdom and the Republic of Ireland.
Naomi Ssenyonga, Angela Lopez‐Cortes, Reem Al‐Saadi, Suzanne Tugnait, Kristina Dzhuma, Catriona Duncan, Gordan Vujanic, Tanzina Chowdhury, Claudia Allemani, Michel P. Coleman, Kathy Pritchard‐Jones, the Children's Cancer and Leukaemia Group (CCLG) Renal Tumour Special Interest Group, Hugh Bishop, Anthony McCarthy, Pamela Kearns, Helen Rees, Amos Burke, Meriel Jenney, Jane Pears, Hamish Wallace, Milind Ronghe, Tanzina Chowdhury, Susan Picton, Emma Ross, Lisa Howell, Bernadette Brennan, Gail Halliday, Richard Grundy, Shaun Wilson, Sucheta Vaidya, Daniel Yeomanson, Jessica Bate, Vesna Pavasovic, Jessica Bate, Sabine Irtan, Jesper Brok, Minou Oostveen, Kristina Dzhuma, Mark Weeks, Richard Williams, Mark Powis, Max Pachl, Bruce Okoye, Naima Smeulders, Gordan Vujanic, Oystein Olsen, Tom Watson, Susan Shelmerdine, Dan Saunders, Angela Lopez-Cortes, Taryn Treger, Tom Jackson, Suzanne Tugnait, Lisa Howell, Tanzina Chowdhury, Sam Behjati, Angela Polanco   +56 more
wiley   +1 more source

Tube-Based Taut String Algorithms for Total Variation Regularization

Mathematics, 2020
Removing noise from signals using total variation regularization is a challenging signal processing problem arising in many practical applications.
Artyom Makovetskii, Sergei Voronin, Vitaly Kober, Aleksei Voronin   +3 more
doaj   +1 more source

Time variation of total electron content over Tucumán [PDF]

, 2004
Este trabajo presenta un análisis de la variabilidad del contenido electrónico total, TEC, sobre Tucumán (26.9S; 294.6E; Dip: -21.1) usando mediciones obtenidas por medio de la técnica Faraday durante el período de alta actividad solar comprendido entre ...
Ezquer, Rodolfo Gerardo, Jadur, Camilo Alberto, Mosert, Marta Estela, Oviedo, Rosario del Valle   +3 more
core  

Multi-Contrast MRI Reconstruction with Structure-Guided Total Variation

, 2015
Magnetic resonance imaging (MRI) is a versatile imaging technique that allows different contrasts depending on the acquisition parameters. Many clinical imaging studies acquire MRI data for more than one of these contrasts---such as for instance T1 and ...
Betcke, Marta M., Ehrhardt, Matthias J.
core   +1 more source

The MedSupport Multilevel Intervention to Enhance Support for Pediatric Medication Adherence: Development and Feasibility Testing

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction We developed MedSupport, a multilevel medication adherence intervention designed to address root barriers to medication adherence. This study sought to explore the feasibility and acceptability of the MedSupport intervention strategies to support a future full‐scale randomized controlled trial.
Elizabeth G. Bouchard, Hital Patel, Paula C. Vincent, Justine Kahn, Kira Bona, Thai Hoa Tran, Elisa M. Rodriguez, Kristopher Attwood, Kara M. Kelly   +8 more
wiley   +1 more source