
The Knapsack Problem with forfeit sets
This work introduces a novel extension of the 0/1 Knapsack Problem in which we consider the existence of so-called forfeit sets. A forfeit set is a subset of items of arbitrary cardinality, such that including a number of its elements that exceeds a predefined allowance threshold implies some penalty costs to be paid in the objective function value. A global upper bound on these allowance violations is also considered.
Continuum theory of phase separation kinetics for active brownian particles
Active Brownian particles (ABPs), when subject to purely repulsive interactions, are known to undergo activity-induced phase separation broadly resembling an equilibrium (attraction-induced) gas-liquid coexistence. Here we present an accurate continuum theory for the dynamics of phase-separating ABPs, derived by direct coarse graining, capturing leading-order density gradient terms alongside an effective bulk free energy. Such gradient terms do not obey detailed balance; yet we find coarsening dynamics closely resembling that of equilibrium phase separation.
Normalized compression distance to measure cortico-muscular synchronization
The neuronal functional connectivity is a complex and non-stationary
phenomenon creating dynamic networks synchronization determining the
brain states and needed to produce tasks. Here, as a measure that quantifies
the synchronization between the neuronal electrical activity of two brain
regions, we used the normalized compression distance (NCD), which is the
length of the compressed file constituted by the concatenated two signals,
normalized by the length of the two compressed files including each single
signal.
First Post-Minkowskian approach to turbulent gravity
We compute the metric fluctuations induced by a turbulent energy-matter tensor within the first order
post-Minkowskian approximation. It is found that the turbulent energy cascade can in principle interfere
with the process of black hole formation, leading to a potentially strong coupling between these two highly
nonlinear phenomena.
De la Vallée Poussin interpolation method for image resizing
The aim of this talk is to show how de la Vallee Poussin type interpolation based on Chebyshev zeros of rst kind, can be applied to resize an arbitrary color digital image. In fact, using such kind of approximation, we get an image scaling method running for any desired scaling factor or size, in both downscaling and upscaling. The peculiarities and the performance of such method will be discussed.
Retrieval of surface emissivity from FORUM-EE9 simulated measurements: optimization of constraints
FORUM (Far-infrared Outgoing Radiation Understanding and Monitoring) is a Fourier Transform Spectrometer (FTS) that will fly as the 9th ESA's Earth Explorer mission. FORUM will sound the atmosphere in the 100-1600 cm-1 region, covering the Far Infrared (FIR) and part of the Middle Infrared (MIR), accounting for more than 95% of the outgoing longwave flux lost by our planet. We review the constrains for the emissivity retrieval.
An eigenvalue problem with variable exponents
A highly nonlinear eigenvalue problem is studied in a Sobolev space with variable exponent. The Euler-Lagrange equation for the minimization of a Rayleigh quotient of two Luxemburg norms is derived. The asymptotic case with a "variable infinity" is treated. Local uniqueness is proved for the viscosity solutions.
Existence and uniqueness for a p-laplacian nonlinear eigenvalue problem
We consider the Dirichlet eigenvalue problem, (the eigenfunction) and ? > 0 (the eigen value), ? is an arbitrary domain in RN with finite measure, 1 < p < ?, 1 < q < p*, p* = Np/(N - p) if 1 < p < N and p* = ? if p >= N. We study several existence and uniqueness results as well as some properties of the solutions. Moreover, we indicate how to extend to the general case some proofs known in the classical case p = q. © 2010 Texas State University - San Marcos.
Mathematical model of insulin kinetics accounting for the amino acids effect during a mixed meal tolerance test
Amino acids (AAs) are well known to be involved in the regulation of glucose metabolism and, in particular, of insulin secretion. However, the effects of different AAs on insulin release and kinetics have not been completely elucidated. The aim of this study was to propose a mathematical model that includes the effect of AAs on insulin kinetics during a mixed meal tolerance test. To this aim, five different models were proposed and compared.





