Results 121 to 130 of about 17,391 (302)

From a packing problem to quantitative recurrence in [0,1] and the Lagrange spectrum of interval exchanges

open access: yesDiscrete Analysis, 2017
From a packing problem to quantitative recurrence in [0,1] and the Lagrange spectrum of interval exchanges, Discrete Analysis 2017:10, 25 pp. A basic fact in the theory of Diophantine approximation is Dirichlet's theorem that for every real number ...
Michael Boshernitzan, Vincent Delecroix
doaj   +1 more source

From tumor‐centric to ecosystem‐based hypotheses in brain tumor research and care

open access: yesMolecular Oncology, EarlyView.
Primary brain tumors, whether in adults or children, present a major challenge because of their dramatic prognosis and the ongoing lack of efficient therapeutic approaches. In recent years, a shift has occurred from tumor‐centric concepts to a more holistic view of these tumors as dynamic ecosystems.
Julie Gavard   +8 more
wiley   +1 more source

Efficient Deployment of Multi-UAVs in Massively Crowded Events

open access: yesSensors, 2018
In this paper, the efficient 3D placement of UAV as an aerial base station in providing wireless coverage for users in a small and large coverage area is investigated.
Ahmad Sawalmeh   +2 more
doaj   +1 more source

Preoperative circulating tumor cells integrated with imaging analysis for prognostic evaluation in head and neck squamous cell carcinoma

open access: yesMolecular Oncology, EarlyView.
Detecting circulating tumor cells (CTCs) in blood before surgery may help predict outcomes in patients with head and neck squamous cell carcinoma (HNSCC). Here, we show when combined with tumor size and lymph node involvement from routine imaging, CTC status identifies high‐risk patients with poorer survival—offering a simple, minimally invasive tool ...
Susanne Flach   +9 more
wiley   +1 more source

Periodicity and Circle Packing in the Hyperbolic Plane [PDF]

open access: yes, 2003
We prove that given a fixed radius $r$, the set of isometry-invariant probability measures supported on ``periodic'' radius $r$-circle packings of the hyperbolic plane is dense in the space of all isometry-invariant probability measures
Bowen, Lewis
core  

Geometrically Efficient Sensor Placement for Enhanced Coverage in Wireless Sensor Networks Using Spatial Arrangement Algorithms

open access: yesInternational Journal of Distributed Sensor Networks
Sensor placement is important for wireless sensor networks (WSNs) to obtain high coverage and energy efficiency. This paper presents a hybrid sensor deployment approach, in which circle packing theory is combined with an energy-efficient clustering ...
Kaki Ramya Sree, Vinay Kumar Pamula
doaj   +1 more source

Projective rigidity of circle packings

open access: yesAdvances in Mathematics
9 ...
Bonsante, Francesco, Wolf, Michael
openaire   +2 more sources

Circle Packings on Surfaces with Projective Structures

open access: yesJournal of Differential Geometry, 2003
44 pages, 12 embedded figures; v2:very minor ...
Kojima, S., Mizushima, S., Tan, S.P.
openaire   +3 more sources

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

open access: yesMolecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang   +9 more
wiley   +1 more source

Circle packing on spherical caps [PDF]

open access: yes
We have studied the packing of congruent disks on a spherical cap, for caps of different size and number of disks, $N$. This problem has been considered before only in the limit cases of circle packing inside a circle and on a sphere (Tammes problem ...
Amore, Paolo
core   +1 more source

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