Results 41 to 50 of about 2,644,664 (312)

Approximation hardness of dominating set problems in bounded degree graphs

, 2008
We study approximation hardness of the Minimum Dominating Set problem and its variants in undirected and directed graphs. Using a similar result obtained by Trevisan for Minimum Set Cover we prove the first explicit approximation lower bounds for various
Chlebikova, Janka, Chlebik, M., Miroslav Chlebik (4461319), J Chlebíková (16079357), Chlebíková, J.   +4 more
core   +1 more source

Spectral and Spatial Feature Extraction of Electroencephalographic (EEG) Data Using Independent Component Analysis (ICA)

, 2017
Purpose of this research is to extract features associated with human brain signal related to electroencephalographic measurements and classification of extracted EEG signals to the relevant the brain region.
Shah, Nasir Ali, Jahangir, Muhammad, Syed Tanweer, null Syed Tanweer, null Rizwan-ur-Rehman, Imran Siddiqui, Rizwan-ur-Rehman, Naqvi, Syed Mansoor, Siddiqui, Imran, Muhammad Jahangir, Syed Mansoor Naqvi, Nasir Ali Shah   +11 more
core   +1 more source

On some invariants of finite groups [PDF]

International Journal of Group Theory, 2013
In this note we are going to survey several invariants of finite groups related either to theirorders or to generating sets or to lattices of subgroups. Some relations among these invariants will be exhibited.
Jan Krempa, Agnieszka Stocka
doaj  

Edge Estimation with Independent Set Oracles [PDF]

, 2018
We study the problem of estimating the number of edges in a graph with access to only an independent set oracle. Independent set queries draw motivation from group testing and have applications to the complexity of decision versus counting problems.
Beame, Paul, Sinha, Makrand, Har-Peled, Sariel, Rashtchian, Cyrus, Natarajan Ramamoorthy, Sivaramakrishnan   +4 more
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

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, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Maximum Independent Sets in Direct Products of Cycles or Trees with Arbitrary Graphs

Discussiones Mathematicae Graph Theory, 2015
The direct product of graphs G = (V (G),E(G)) and H = (V (H),E(H)) is the graph, denoted as G×H, with vertex set V (G×H) = V (G)×V (H), where vertices (x1, y1) and (x2, y2) are adjacent in G × H if x1x2 ∈ E(G) and y1y2 ∈ E(H). Let n be odd and m even. We
Paj Tjaša, Špacapan Simon
doaj   +1 more source

Feature Extraction Using Independent Component Analysis Method from Non-Invasive Recordings of Electroencephalography (EEG) Brain Signals

, 2017
Electroencephalography (EEG) is a well known procedure in neuroscience, performed to extract brain signal activity associated with voluntary and involuntary tasks.
Ishfaque Ahmed, null Muhammad Azhar, null Imran Siddiqui, Syed Tanveer Iqbal, Rizwan-ur-Rehman, null Ishfaque Ahmed, null Muhammad Jahangir, Nasir Ali Shah, null Nasir Ali Shah, null Syed Tanveer Iqbal, null Rizwan-ur-Rehman, Muhammad Azhar, Imran Siddiqui, Muhammad Jahangir   +13 more
core   +1 more source

Health‐Related Quality of Life and Symptom Severity Among Patients With PIK3CA‐Related Overgrowth Spectrum: A Mixed‐Methods Study to Understand Real‐World Experience With Alpelisib Treatment

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu, Kaitlin LaGasse, Cory D. Saucier, Kimberly Raymond, Miranda Lauher‐Charest, Lauren Crowder, Beilei Cai, Mary Lisha Paul, Denise Adams   +8 more
wiley   +1 more source

The Hilton-Spencer Cycle Theorems Via Katona’s Shadow Intersection Theorem

Discussiones Mathematicae Graph Theory, 2023
A family 𝒜 of sets is said to be intersecting if every two sets in 𝒜 intersect. An intersecting family is said to be trivial if its sets have a common element.
Borg Peter, Feghali Carl
doaj   +1 more source

Noise optimisation of polarisation independent wavelength converters based on dual-pump four-wave mixing

, 1999
Four-wave mixing (FWM) has recently attracted great attention for wavelength conversion and phase conjugation. It offers strict transparency in wavelength conversion, where the use of any modulation format is permitted. In order for a FWM-based device to
Laming, R.I., Geiger, H., Set, S.Y.
core   +1 more source