搜索结果: 46-60 共查到“数学 energy”相关记录92条 . 查询时间(0.159 秒)
On the Decay of Infinite Energy Solutions to the Navier-Stokes Equations in the Plane
Navier-Stokes equations decay of solutions infinite energy solutions
2011/1/20
Infinite energy solutions to the Navier-Stokes equations in R2 may be constructed by decomposing the initial data into a finite energy piece and an infinite energy piece, which are then treated separa...
On electromagnetism and generalized energy-momentum tensor of the electromagnetic field in spaces with Finsler geometry
On electromagnetism generalized energy-momentum tensor electromagnetic field spaces Finsler geometry
2011/1/20
By using variational calculus and exterior derivative formalism, we proposed in [30] and [11] a new geometric approach to electromagnetism in pseudo-Finsler spaces.
In this paper we consider the issue of energy efficiency in random access networks and show that optimizing transmission probabilities of nodes can enhance network performance in terms of energy cons...
Energy and Utility Optimization in Wireless Networks with Random Access
Wireless Networks Random Access
2010/11/24
Energy consumption is a main issue of concern in wireless networks. Energy minimization increases the time that networks’ nodes work properly without recharging or substituting batteries. Another crit...
Optimal Utility-Energy tradeoff in Delay Constrained Random Access Networks
Optimal Utility-Energy tradeoff Delay Constrained Random Access Networks
2010/11/24
Rate, energy and delay are three main parameters of interest in ad-hoc networks. In this paper, we discuss the problem of maximizing network utility and minimizing energy consumption while satisfying...
Complete solution to a conjecture on the maximal energy of unicyclic graphs
Complete solution conjecture unicyclic graphs
2010/11/24
For a given simple graph $G$, the energy of $G$ denoted by $E(G)$, is defined as the sum of the absolute values of all eigenvalues of its adjacency matrix. Let $P_n^{\ell}$ be the unicyclic graph obt...
Energy-Efficient Precoding for Multiple-Antenna Terminals
Energy-Efficient Precoding Multiple-Antenna Terminals
2010/11/24
The problem of energy-efficient precoding is investigated when the terminals in the system are equipped with multiple antennas. Considering static and fast-fading multiple-input multiple-output (MIMO)...
Peierls-Nabarro energy surfaces and directional mobility of discrete solitons in two-dimensional saturable nonlinear Schrödinger lattices
Pattern Formation and Solitons(nlin.PS) Optics(physics.optics)
2010/11/10
We address the problem of directional mobility of discrete solitons in two-dimensional rectangular lattices, in the framework of a discrete nonlinear Schr\"odinger model with saturable on-site nonline...
The Energy-Momentum tensor on $Spin^c$ manifolds
The Energy-Momentum tensor $Spin^c$ manifolds
2010/11/8
On $Spin^c$ manifolds, we study the Energy-Momentum tensor associated with a spinor field. First, we give a spinorial Gauss type formula for oriented hypersurfaces of a $Spin^c$ manifold. Using the no...
Global dynamics above the ground state energy for the one-dimensional NLKG equation
Global dynamics ground state energy the one-dimensional NLKG equation
2010/11/12
In this paper we obtain a global characterization of the dynamics of even solutions to the one-dimensional nonlinear Klein-Gordon (NLKG) equation on the line with focusing nonlinearity |u|^{p-1}u, p>5...
Some two-dimensional finite energy percolation processes
Some two-dimensional energy percolation processes
2010/11/18
Some examples of translation invariant site percolation processes on the $\Z^2$ lattice are constructed, the most far-reaching example being one that satisfies uniform finite energy (meaning that the...
The energy of a conformal warped manifold and applications
conformal warped manifold applications
2010/11/18
We introduce and study the notion of the energy of a conformally warped manifold, which includes as special cases the Yamabe constant and Perelman's $\nu$-entropy. We then investigate some properties...
On the Energy Efficiency of LT Codes in Proactive Wireless Sensor Networks
Energy Efficiency LT Codes Proactive Wireless Sensor Networks
2010/11/19
This paper presents an in-depth analysis on the energy efficiency of Luby Transform (LT) codes with Frequency Shift Keying (FSK) modulation in a Wireless Sensor Network (WSN) over Rayleigh fading chan...
Existence of Spherically Symmetric Initial Data with Zero Energy, Unit Mass, and Virial less than - 1/2 for the Relativistic Vlasov-Poisson Equation with Attractive Coupling
Zero Energy Unit Mass
2010/11/19
In a recent paper, Kiessling and Tahvildar-Zadeh proved that any spherically symmetric classical solution of the attractive relativistic Vlasov-Poisson equation launched by sufficiently regular initi...
Regular hyperbolicity, dominant energy condition and causality for Lagrangian theory of maps
Regular hyperbolicity dominant energy condition Lagrangian theory
2010/11/19
The goal of the present paper is three-fold. First is to clarify the connection between the dominant energy condition and hyperbolicity properties of Lagrangian field theories. Second is to provide fu...