搜索结果: 136-150 共查到“理学 optimization”相关记录256条 . 查询时间(0.125 秒)
Dynamic Adaptive Mesh Refinement for Topology Optimization
Dynamic Adaptive Mesh Refinement Topology Optimization
2010/12/13
We present an improved method for topology optimization with both adaptive mesh refinement and
derefinement. Since the total volume fraction in topology optimization is usually modest, after a few in...
A new look at nonnegativity on closed sets and polynomial optimization
closed sets nonnegative functions nonnegative polynomials semidefinite
2010/11/26
We first show that a continuous function f is nonnegative on a closed set K Rn if and only if (countably many) moment matrices of some signed measure d = fdμ with supp μ = K, are all positive semid...
Optimization of the transmission of observable expectation values and observable statistics in Continuous Variable Teleportation
transmission of observable expectation values observable statistics Continuous Variable Teleportation
2010/10/21
We analyze the statistics of observables in continuous variable (CV)quantum teleportation in the formalism of the characteristic function.We derive expressions for average values of output state obser...
Optimization Framework and Graph-Based Approach for Relay-Assisted Bidirectional OFDMA Cellular Networks
Optimization Framework Graph-Based Approach OFDMA Cellular Networks
2010/11/29
This paper considers a relay-assisted bidirectional cellular network where the base station (BS)communicates with each mobile station (MS) using OFDMA for both uplink and downlink. The goal is to impr...
Optimization and Convergence of Observation Channels in Stochastic Control
Stochastic control information theory observation channels optimization
2010/12/9
This paper studies the optimization of observation channels (stochastic kernels)in partially observed stochastic control problems. In particular, existence, continuity, and convexity
properties are i...
Preparation of polystyrene/montmorillonite nanocomposites: optimization by response surface methodology (RSM)
Montmorillonite organoclays polymer polystyrene
2010/10/19
Preparation of polystyrene (PS)-montmorillonite nanocomposites was carried out in 3 steps: purification and determination of the cation exchange capacity (CEC) of clay, synthesis of organoclay, and pr...
Multivariate Optimization and Validation of a Capillary
Multivariate Optimization Validation of a Capillary
2010/9/15
A fast, accurate, precise and sensitive capillary electrophoresis method for the simultaneous determination of dextromethorphan hydrobromide, phenylephrine hydrochloride, paracetamol and chlorpheniram...
Transversality Conditions for Higher Order Infinite Horizon Discrete Time Optimization Problems
Transversality condition Dynamic optimiza-tion Infinite horizon Higher order difference problems
2010/4/28
In this paper, we examine higher order difference problems. Using the "squeezing" argument, we derive both Euler's condition and the transversality condition. In order to derive the two conditions, tw...
Design of Easily Synchronizable Oscillator Networks Using the Monte Carlo Optimization Method
Synchronization Kuramoto model Networks Metropolis Optimization
2010/4/21
Starting with an initial random network of oscillators with a heterogeneous frequency distribution, its autonomous synchronization ability can be largely improved by appropriately rewiring the links b...
Global spatial optimization with hydrological systems simulation:application to land-use allocation and peak runoff minimization
Global spatial optimization hydrological systems simulation land-use allocation peak runoff minimization
2010/2/20
A general methodology is presented to integrate complex simulation models of hydrological systems into optimization models, as an alternative to scenario-based approaches. A gradient-based hill climbi...
Global spatial optimization with hydrological systems simulation:application to land-use allocation and peak runoff minimization
Global spatial optimization hydrological systems simulation land-use allocation peak runoff minimization
2010/3/5
A general methodology is presented to integrate complex simulation models of hydrological systems into optimization models, as an alternative to scenario-based approaches. A gradient-based hill climbi...
A note on evolutionary stochastic portfolio optimization and probabilistic constraints
portfolio optimization probabilistic constraints
2010/4/27
In this note, we extend an evolutionary stochastic portfolio optimization framework to include probabilistic constraints. Both the stochastic programming-based modeling environment as well as the evol...
Particle Swarm Optimization and gravitational wave data analysis: Performance on a binary inspiral testbed
Particle Swarm Optimization gravitational wave
2010/3/17
The detection and estimation of gravitational wave (GW) signals belonging to a parameterized family of waveforms requires, in general, the numerical maximization of a data-dependent function of the si...
Beam-loss driven injection optimization for CSNS/RCS
painting injection beam loss space charge effect
2010/5/7
This paper summarizes the painting injection optimization for the Chinese Spallation Neutron Source (CSNS) ring. This optimization focuses on two main design goals: the lower beam loss and a space-cha...
Optimization of Removal of Methylene Blue by Platanus Tree Leaves Using Response Surface Methodology
Methylene Blue Platanus Tree Leaves Response Surface Methodology
2010/9/17
Platanus tree leaves were successfully used as a novel sorbent for removing of methylene blue (MB) dye from aqueous solutions. A 23 full factorial design was performed for screening of the main factor...