搜索结果: 76-90 共查到“理学 Methods”相关记录522条 . 查询时间(0.203 秒)
Near-Optimal Detection of Geometric Objects by Fast Multiscale Methods
Fast Multiscale Methods Geometric Objects
2015/8/21
We construct detectors for ‘geometric’ objects in noisy data. Examples include a detector
for presence of a line segment of unknown length, position, and orientation in two-dimensional
image data wi...
Approximate analysis of search algorithms with “physical” methods
Statistical physics analysis of algorithms stochastic input the physical concept
2015/8/20
An overview of some methods of statistical physics applied to the analysis of algorithms for optimization problems (satisfiability of Boolean constraints, vertex cover of graphs, decoding, ...) with d...
Evaluation of the Wetland Mapping Methods using Landsat ETM+ and SRTM Data
wetlands remote sensing mapping delineation automated methods semi-automated methods Limpopo river basin
2015/8/13
Overarching goal of this paper was to evaluate automated and semi-automated methods of mapping wetlands using Landsat ETM+ and SRTM data. Automated methods consisted of: (a) slope derived from SRTM, (...
Extreme rainfall analysis and estimation of Probable Maximum Precipitation (PMP) by statistical methods over the Indus river basin in India
rainfall Probable Maximum Precipitation
2015/8/13
Annual extreme rainfall series of 1-3 day durations at stations located inside the Indus basin in India were subjected to statistical analysis in order to estimate point Probable Maximum Precipitation...
Numerical methods for H_2 related problems
Numerical convex programming quantity convex programming application
2015/8/12
Recent results have shown that several H_2 and H_2-related problems can be formulated as convex programs with a finite number of variables. We present an interior point algorithm for the solution of t...
Robust optimal control of linear discrete-time systems using primal-dual interior-point methods
Robust control application model linear discrete
2015/8/11
This paper describes how to efficiently solve a robust optimal control problem using recently developed primal-dual interior-point methods. Among potential applications are model predictive control. T...
Model the effect of four artificial recharge dams on the quality of groundwater using geostatistical methods in GIS environment,Oman
artificial recharge TDS Total Dissolved Solid GPI Global Polynomial Interpolation IDW Inverse Distance Weighting TSA Trend Surface Analysis Kriging geostatistical analysis
2015/8/11
The geostatistical techniques of GPI, IDW and Kriging were applied in order to evaluate the use of these statistical approaches in GIS environment to examine artificial recharge dams and its effect on...
A duality view of spectral methods for dimensionality reduction
Duality spectrum the nonlinear dimension reduction locally linear embedding Laplacian sparse matrix
2015/8/10
We present a unified duality view of several recently emerged spectral methods for nonlinear dimensionality reduction, including Isomap, locally linear embedding, Laplacian eigenmaps, and maximum vari...
Cutting-set methods for robust convex optimization with pessimizing oracles
robust optimization cutting-set methods semi-infi nite programming minimax optimization games
2015/8/10
We consider a general worst-case robust convex optimization problem, with arbitrary dependence on the uncertain parameters, which are assumed to lie in some given set of possible values. We describe a...
Monotonicity and restart in fast gradient methods
flat gradient algorithm oscillation values
2015/8/7
Fast gradient methods are known to be non-monotone algorithms, and oscillations typically occur around the solution. To avoid this behavior, we propose in this paper a fast gradient method with restar...
First order optimization methods often perform poorly on ill-conditioned optimization problems. However, by preconditioning the problem data and solving the preconditioned problem, the performance of ...
Trace Element Estimation – Methods & Clinical Context
Atomic Absorption Spectrophotometer ICP-MS Stripping Voltameter Colorimetry Electro Thermal Vaporization Neutron Activation Analysis Laser Microprobe Mass Analysis
2015/8/5
Understanding the effects of trace metals on human health is as complex as it is fascinating. As mentioned earlier, the high concentrations may prove toxic, as also, depletion in the concentration of ...
IMPACT ANALYSIS AND SAMPLING DESIGN IN THE POLLUTION MONITORING PROCESS OF THE AZNALCOLLAR ACCIDENT USING GEOSTATISTICAL METHODS
Spatial Information Systems Cartography Pollution Impact analysis Sampling Statistics
2015/7/29
On the morning of the 25
th
of April 1998, an accidental spill of the waste damp basin of the Aznalcóllar mine (Seville, SW Spain)
occurred. The basin, containing mud and acid waters, suffered a ...
COMPARISON OF BAND RATIOING AND SPECTRAL INDICES METHODS FOR DETECTING ALUNITE AND KAOLINITE MINERALS USING ASTER DATA IN BIGA REGION, TURKEY
Remote Sensing Geology Comparison Detection
2015/7/29
Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) covers a wide spectral region with 14 bands
from visible to the thermal infrared. The different band ranges can be capable of d...
An Overview of Fixed Passive Acoustic Observation Methods for Cetaceans
Cetaceans Acoustic Observation Methods
2015/7/22
Cetaceans are increasingly being included as top trophic-level predators in models of ecosystem dynamics (Baumgartner and Mate, 2003; Tynan, 2004; Redfern et al., 2006). Traditional visual survey meth...