Results 41 to 50 of about 4,101,702 (289)
Search for Gamma-ray Line Signatures with H.E.S.S
, 2015 Many results from astrophysical observations point to a 27% contribution of non-baryonic dark matter to the mass-energy budget of the universe. Although still elusive, strongly motivated candidates in form of weakly interacting massive particles could ...
Conrad, Jan +6 more
core +3 more sources
On-line learning from search failures [PDF]
Machine Learning, 1994 Learning by explaining failures and avoiding similar ones thereafter is an attractive way to speed up problem solving. However, previous methods for explanation-based learning from failure can take too long to detect failures, explain them, or test the learned rules.
Neeraj Bhatnagar, Jack Mostow
openaire +2 more sources
Croatian Operational Research Review, 2022 In this paper, it is aimed to computationally conduct a performance benchmarking for the steepest descent and the three well-known conjugate gradient methods (i.e., Fletcher-Reeves, Polak- Ribiere and Hestenes-Stiefel) along with six different step ...
Kadir Kiran
doaj
IEEE AccessImage denoising has long been one of the most important and challenging problem in image processing, especially in the presence of high noisy levels. Considerable effort has been devoted to the development of effective denoising approaches. Over the past
Mahmoud M. Yahaya +2 more
doaj +1 more source
An Improved Modification of Accelerated Double Direction and Double Step-Size Optimization Schemes
Mathematics, 2022 We propose an improved variant of the accelerated gradient optimization models for solving unconstrained minimization problems. Merging the positive features of either double direction, as well as double step size accelerated gradient models, we define ...
Milena J. Petrović +4 more
doaj +1 more source
Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster [PDF]
, 2015 Line emission from dark matter is well motivated for some candidates e.g. sterile neutrinos. We present the first search for dark matter line emission in the 3-80keV range in a pointed observation of the Bullet Cluster with NuSTAR.
Boggs, S. E. +12 more
core +4 more sources
On-line Search in Two-Dimensional Environment [PDF]
Theory of Computing Systems, 2018 AbstractWe consider the following on-line pursuit-evasion problem. A team of mobile agents called searchers starts at an arbitrary node of an unknown network. Their goal is to execute a search strategy that guarantees capturing a fast and invisible intruder regardless of its movements using as few searchers as possible.
Dariusz Dereniowski, Dorota Osula
openaire +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
wiley +1 more source
BATSE Gamma-Ray Burst Line Search: V. Probability of Detecting a Line in a Burst
, 1997 The physical importance of the apparent discrepancy between the detections by pre-BATSE missions of absorption lines in gamma-ray burst spectra and the absence of a BATSE line detection necessitates a statistical analysis of this discrepancy.
D. L. Band +7 more
core +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie +4 more
wiley +1 more source