Results 31 to 40 of about 1,724,960 (182)
The coincidence problem in $f(R)$ gravity models
, 2012 To explore possibilities of avoiding coincidence problem in $f(R)$ gravity we consider models in Einstein conformal frame which are equivalent to Einstein gravity with a minimally coupled scalar field. As the conformal factor determines the coupling term
Sil, A., Som, S.
core +1 more source
Accelerated Share Repurchases [PDF]
, 2011 Accelerated share repurchases (ASRs) are credible commitments by firms to repurchase shares immediately. Including an ASR in a repurchase program reduces the flexibility that firms have to alter an announced program in response to subsequent changes in ...
Bargeron, Leonce +2 more
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The annual cycle of surface eddy kinetic energy and its influence on eddy momentum fluxes as inferred from altimeter data [PDF]
, 2017 The annual cycle of surface eddy kinetic energy (EKE) and its influence on eddy momentum fluxes are investigated using an updated record of satellite altimeter data.
Zhai, Xiaoming
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Coupling Remote Sensing With a Process Model for the Simulation of Rangeland Carbon Dynamics
Journal of Advances in Modeling Earth Systems, Volume 17, Issue 3, March 2025.Abstract Rangelands provide significant environmental benefits through many ecosystem services, which may include soil organic carbon (SOC) sequestration. However, quantifying SOC stocks and monitoring carbon (C) fluxes in rangelands are challenging due to the considerable spatial and temporal variability tied to rangeland C dynamics as well as limited
Yushu Xia +33 more
wiley +1 more source
Long-term population trends of bird communities in artificially-protected wetlands of Northern Italy
AvocettaArtificial wetlands have become a common conservation approach to contrast the decline of biodiversity globally, as a result of the ongoing loss and fragmentation of natural habitats.
Stefano Borghi +8 more
doaj +1 more source
Advanced Electronic Materials, Volume 10, Issue 4, April 2024.The amorphous Zr‐doped HfO2 memristors fabricated via the co‐sputtering approach exhibit improved switching performance by providing a controllable knob to modulate defects in the switching layer, satisfying the requirement for complementary‐metal‐oxide‐semiconductor back‐end‐of‐line (CMOS BEOL) integration.
Quanzhou Zhu +13 more
wiley +1 more source
Cardiovascular Simulation Cases for Dental Students
MedEdPORTAL, 2009 Introduction Human patient simulation (HPS) exercises are now routinely used in medical school for teaching physiologic principles in a clinical context without patient risks. The use of HPS in dental education, however, is still exceedingly rare.
Kenneth Roos +3 more
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Interactions between metals and soil organic matter in various particle size fractions of soil contaminated with waste water [PDF]
, 2009 Only scarce field studies concern the consequences of natural soil organic matter (SOM) and metal interactions on SOM dynamics in soils. We investigated the interactions of four metals (Pb, Zn, Cu and Cd) with the SOM associated to five different size ...
Bermond, Alain +4 more
core +5 more sources
Danube sediment contamination with polychlorinated biphenyls: New interpretation of sediment quality assessment [PDF]
Acta Periodica Technologica, 2019 Among the contaminants of greatest concern, it is still possible to detect in aquatic systems "old" classics such as polychlorinated biphenyls (PCBs).
Brborić Maja +3 more
doaj +1 more source
SOM of SOMsThis paper proposes an extension of the self-organizing map (SOM), in which the mapping objects themselves are self-organizing maps. Thus a “SOM of SOMs” is presented, which we refer to as a SOM2. A SOM2 has a hierarchical structure consisting of a single parent SOM and a set of child SOMs.
openaire +2 more sources