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We consider the optimization problem of minimizing ∫ Ω G(|∇u|) dx in the class of functions W (Ω), with a constraint on the volume of {u > 0}. The conditions on the function G allow for a different behavior at 0 and at ∞. We consider a penalization problem, and we prove that for small values of the penalization parameter, the constrained volume is attained.… (More)

- SANDRA MARTÍNEZ
- 2006

We consider the optimization problem of minimizing R Ω G(|∇u|) + λχ{u>0} dx in the class of functions W (Ω) with u − φ0 ∈ W 1,G 0 (Ω), for a given φ0 ≥ 0 and bounded. W (Ω) is the class of weakly differentiable functions with R Ω G(|∇u|) dx < ∞. The conditions on the function G allow for a different behavior at 0 and at ∞. We prove that every solution u is… (More)

- Sergi Juanpere, Noemí Cañete, Pedro Ortuño, Sandra Martínez, Gloria Sanchez, Lluis Bernado
- Insights into imaging
- 2013

BACKGROUND
Multiple different types of mediastinal masses may be encountered on imaging techniques in symptomatic or asymptomatic patients. The location and composition of these lesions are critical to narrowing the differential diagnosis.
METHODS
Radiological compartmentalisation of the mediastinum helps in focusing the diagnosis of masses on the basis… (More)

- Sandra Martínez, Noemi Wolanski
- SIAM J. Math. Analysis
- 2009

We consider the optimization problem of minimizing R Ω G(|∇u|) dx in the class of functions W (Ω), with a constrain on the volume of {u > 0}. The conditions on the function G allow for a different behavior at 0 and at ∞. We consider a penalization problem, and we prove that for small values of the penalization parameter, the constrained volume is attained.… (More)

- Maria Rosaria Amendola, Sandra Rita Martinez
- 2006

Simon Brendle. A minimal map is an area preserving diffeomorphism whose graph is a minimal surface. We will discuss the regularity of such maps near the boundary. To this end, we need to control the tangent plane to the minimal surface at the boundary. Alice Chang. In this talk, I will report some recent joint work of Sophie Chen, Paul Yang and myself on a… (More)

AUTHOR: Commander Christopher E. Hicks TITLE: Understanding and Designing Military Organizations for a Complex Dynamic Environment FORMAT: Strategy Research Project DATE: 25 March 2008 WORD COUNT: 6,174 PAGES: 32 KEY TERMS: Transformation, Organizational Agility, Command and Control CLASSIFICATION: Unclassified The intent of this paper is to apply two… (More)

- Edwin Mármol, Sandra Martínez, Xavier Baldo, Matilde Rubio, Fernando Sebastián
- Cirugia espanola
- 2010

- Mariano Castilla, Marta Jerez, Manuel Llácer, Sandra Martinez
- Paediatric anaesthesia
- 2004

We present the case of a neonate undergoing surgery on the first day of life for the installation of a permanent pacemaker because of the existence of congenital complete heart block (CCHB) with a basal heart rate of 43 b.min(-1) and minimal elevation after initiating an isoproterenol perfusion. The intervention was under general anaesthesia with laryngeal… (More)

- Richard F Storrow, Sandra Martinez
- Wisconsin law review
- 2003