Results 111 to 120 of about 5,920 (280)
Leaky Sewers Hydraulically Disconnect from Groundwater: A Proof‐of‐Concept
Groundwater, EarlyView.In this study, we newly demonstrate that leaky pipes can become hydraulically disconnected from the underlying groundwater—a phenomenon analogous to river–groundwater interactions. Through numerical modeling, we show that, as the groundwater table declines, the leakage flux from the pipe (in absolute terms) initially increases until a critical depth ...
Aaron Peche +5 more
wiley +1 more source
On Relative Orbital Rotation in Relativity Theory [PDF]
, 1999 We consider the following question within both Newtonian physics and relativity theory. "Given two point particles X and Y, if Y is rotating relative to X, does it follow that X is rotating relative to Y?" As it stands the question is ambiguous.
Malament, David B.
core
A Non‐Parametric Framework for Correlation Functions on Product Metric Spaces
International Statistical Review, EarlyView.Summary We propose a non‐parametric framework for analysing data defined over products of metric spaces, a versatile class encountered in various fields. This framework accommodates non‐stationarity and seasonality and is applicable to both local and global domains, such as the Earth's surface, as well as domains evolving over linear time or time ...
Pier Giovanni Bissiri +3 more
wiley +1 more source
Modified Kernel Functions by Geodesic Distance
EURASIP Journal on Advances in Signal Processing, 2004 When dealing with pattern recognition problems one encounters different types of prior knowledge. It is important to incorporate such knowledge into the classification method at hand.
Yong Quan, Jie Yang
doaj +1 more source
Visualizing the transition to chaos in the Lorenz system
, 2006 The Lorenz system still fascinates many people because of the simplicity of the equations that generate such complicated dynamics on the famous butterfly attractor.
Osinga, HM +3 more
core
Optimal Healthcare Contracts: Theory and Empirical Evidence
Journal of Economics &Management Strategy, EarlyView.ABSTRACT In this paper, we investigate the contracts offered by a large healthcare purchaser to health service providers. Contracts are based on the DRG principle that all hospitalizations in a diagnosis group are reimbursed at the same rate. This principle is relaxed in practice, as in several cases, the amount reimbursed within each DRG exhibits ...
Paolo Berta +2 more
wiley +1 more source
On the geometry of Riemannian manifolds with a Lie structure at infinity
International Journal of Mathematics and Mathematical Sciences, 2004 We study a generalization of the geodesic spray and give conditions for noncomapct manifolds with a Lie structure at infinity to have positive injectivity radius. We also prove that the geometric operators are generated by the given Lie algebra of vector
Bernd Ammann +2 more
doaj +1 more source
Affine connections for 2-osculating vector fields and geodesics
, 1989 Starting with the work of \textit{A. M. Pastore} [ Rend. Accad. Naz. Sci. Detta XL, IV. Ser. 22-23, 135-148 (1972; Zbl 0414.53008); Rend. Mat. Appl., VII. Ser. 1, 177-190 (1981; Zbl 0477.53018)]\ the authors study the relationship between the geodesics with respect to a connection for 2-osculating vector fields and the curves which are projections of ...
Di Terlizzi, L., Verroca, F.
openaire +2 more sources
Totally geodesic property of the Hopf vector field
, 2005 We prove that the Hopf vector field is a unique one among geodesic covariantly normal unit vector fields on spheres such that the submanifold generated by the field is totally geodesic in the unit tangent bundle with Sasaki metric. As application, we give a new proof of stability (instability) of the Hopf vector field with respect to volume variation ...
openaire +2 more sources
Sedimentology, EarlyView.ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee +2 more
wiley +1 more source