Results 41 to 50 of about 376,139 (146)

Two‐Block Paths in Oriented Graphs of Large Semidegree

Journal of Graph Theory, EarlyView.
ABSTRACT We study the existence of oriented paths with two blocks in oriented graphs under semidegree conditions. A block of an oriented path is a maximal directed subpath. Given positive integers k $k$ and ℓ $\ell $ with k / 2 ≤ ℓ < k $k/2\le \ell \lt k$, we establish a semidegree function that guarantees the containment of every oriented path with ...
Irena Penev, S Taruni, Stéphan Thomassé, Ana Trujillo‐Negrete, Mykhaylo Tyomkyn   +4 more
wiley   +1 more source

Flow‐Critical Graphs

Journal of Graph Theory, EarlyView.
ABSTRACT Lovász et al. proved that every six‐edge‐connected graph has a nowhere‐zero three‐flow. In fact, they proved a more technical statement, which says that there exists a nowhere‐zero three‐flow that extends the flow prescribed on the incident edges of a single vertex z $z$ with bounded degree. We extend this theorem of Lovász et al.
Arnbjörg Soffía Árnadóttir, Zdeněk Dvořák, Bernard Lidický, Benjamin Moore, Evelyne Smith‐Roberge, Robert Šámal   +5 more
wiley   +1 more source

Fabrication‐Tolerant GaAs/SiN Coupling Above the Loss Threshold for Quantum Photonic Applications

Laser &Photonics Reviews, EarlyView.
Reliable low‐loss optical coupling between GaAs and SiN waveguides for heterogeneous integration of single‐photon sources is demonstrated. By developing a fabrication‐aware numerical design approach and accounting for experimentally measured fabrication variations and scattering losses, coupling efficiencies meeting the < 10% loss requirement for ...
Miloš Ljubotina, Jasper De Witte, Zhe Liu, Andraž Debevc, Leonardo Midolo, Gunther Roelkens, Bart Kuyken, Dries Van Thourhout, Marko Topič, Janez Krč   +9 more
wiley   +1 more source

Digital fire technologies and community networks: Cultivating just sociotechnical practices for living with planetary change

People and Nature, EarlyView.
Abstract Fires are expanding in frequency and intensity worldwide due to climate change and land‐use transformations. At the same time, fire often plays a regenerative role in ecosystems. Traditional and cultural practices incorporate fire use for landscape management and landscape renewal. In this complex matrix of fire ecologies, digital technologies
Jennifer Gabrys, Paula Tiara Torres, Pablo González Rivas   +2 more
wiley   +1 more source

Udrożnianie górnych dróg oddechowych w stanach zagrożenia życia u dzieci

Pediatria i Medycyna Rodzinna, 2012
Wstęp: Większość przypadków nagłego zatrzymania krążenia występujących u dzieci wynika przede wszystkim z asfiksji, a nie z pierwotnej dysfunkcji mięśnia sercowego z towarzyszącymi zaburzeniami rytmu.
Mariusz Goniewicz, Patryk Rzońca, Daniel Sieniawski, Marcin Rybakowski, Magdalena Witt, Krzysztof Goniewicz   +5 more
doaj  

Stratospheric influence on tropical cyclone evolution

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We developed a metric based on moist static energy to detect and quantify the intrusion of stratospheric air into the inner core of tropical cyclones. High‐resolution numerical simulations show that this stratospheric interaction forms warm anomalies (high‐level warm cores) in the upper troposphere.
Andrea Davin, Giousef Alexandros Charinti, Caroline Muller, Andrea Polesello, Claudia Pasquero   +4 more
wiley   +1 more source

Małgorzata Zaleska (red.) Europejska Unia Bankowa [PDF]

, 2015
recenzja z książki pod red. naukową M. zaleskiej "Europejska Unia Bankowa", wyd.
Sobol-Kołodziejczyk, Piotr, Zieliński, Marek   +1 more
core  

High‐dimensional elementomes outperform CNP models in explaining photosynthetic traits

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Links between plant elementomes (i.e. the concentration of chemical elements in plant tissue) and functional traits have the potential to improve predictions of plant physiological performance and ecosystem processes, and their response to environmental change.
Roger Grau‐Andrés, Ana M. Yáñez‐Serrano, Jordi Corbera, Joan Llusià, Josep Peñuelas, Catherine Preece, Francesc Sabater, Jordi Sardans, Marcos Fernández‐Martínez   +8 more
wiley   +1 more source

Rada Europejska a bezpieczeństwo zewnętrzne i zagrożenia międzynarodowe dla Unii Europejskiej. Pomiędzy idealizmem a realizmem [PDF]

, 2017
In order to accomplish the goals of the European Council with respect to external activities, the Treaty of Lisbon has provided a new institutional context. It is based on boosting the European Council’s potential and ambitions.
Czachór, Zbigniew
core   +1 more source

Metabarcoding replicate detection frequency tracks ddPCR copy number for cod and herring eDNA in ancient marine sediments

Methods in Ecology and Evolution, EarlyView.
Abstract Detecting environmental DNA (eDNA) from rare or low‐abundance aquatic species remains a major challenge, particularly when it is highly degraded, present at low concentrations, and dominated by DNA from non‐target taxa. These challenges are further amplified in sedimentary ancient DNA (sedaDNA) studies, where thousands of years can degrade ...
Elena Baños, Steen Wilhelm Knudsen, Kristine Bohmann, Luke E. Holman   +3 more
wiley   +1 more source