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A decade of surface change on a Namib linear dune
  • A decade of surface change on a Namib linear dune
  • Aeolian features ; Arid area ; Desert ; Dune ; Earth surface processes ; Namibia
  • Survey data from return visits to a linear dune in the Namib Desert provide information about change in dune form over a decade. The data demonstrate that, although change on these large features is slow, there is none the less considerable movement
Mode choice in a hub-and-spoke network : a zero-one linear programming approach
  • Mode choice in a hub-and-spoke network : a zero-one linear programming approach
  • Air transport ; Decision ; Economic cost ; Linear data processing;Linear data programming ; Los Angeles ; Mode choice ; Model ; Optimization ; Road transport ; Time-distance ; Transport network ; United States
  • The paper devises integer linear programs to represent the mode and route assignment aspects of the operational problem. Considering the case of hubs in Los Angeles and Dayton, as the time constraints are relaxed, cities such as Minneapolis and New
An application of linear programming and geographic information systems : cropland allocation in Antigua
  • An application of linear programming and geographic information systems : cropland allocation in Antigua
  • Agricultural land use ; Agricultural policy ; Antigua and Barbuda ; Crop ; Diversification ; Farming;Agriculture ; Geographical information system ; Linear data processing;Linear data programming ; Optimization ; Rural planning
Mollerhe role of vegetation in the formation of linear sand dunes in Aeolian geomorphology. Proceedings.
  • Mollerhe role of vegetation in the formation of linear sand dunes in Aeolian geomorphology. Proceedings.
  • dunes and turns them into linear braided and seif dunes. This process was analyzed by aerial photography and computer-aided photogrammetric mapping.
  • A recent change in the vegetation cover of linear dunes in the Negev desert forms the basis for the study of the effect of vegetation on linear dune morphology. Destruction of the vegetation brings about abrupt change in the morphology of linear
Reguła kolejności według wielkości jako metoda opisu stanu i rozwoju sieci osadniczej
  • Linear data processing;Linear data programming ; Methodology ; Rank-size distribution ; Settlement ; Settlement system
A comparison of flow intensities in alluvial rivers : characteristics and implications for modelling flow processes
  • A comparison of flow intensities in alluvial rivers : characteristics and implications for modelling flow processes
  • Forecast ; Least squares method ; Linear regression ; Methodology ; Model ; Stream ; Stream flow ; Turbulence
  • This paper compares flow intensity data obtained with different instruments from a variety of fluvial environments. It examines associations between the root-mean-square of longitudinal velocity fluctuations (flow intensity), local mean velocity
  • , relative depth, and boundary resistance. Preliminary approaches to prediction and modelling of variations in flow intensity are suggested based upon linear regression relationships.
Aeolian sediment flux decay: non-linear behaviour on developing deflation lag surfaces
  • Aeolian sediment flux decay: non-linear behaviour on developing deflation lag surfaces
  • surfaces undergoing deflation. It is shown that the velocity profile data are essential to understanding the physical processes driving the flux decay. The co-dependence of the sediment flux, shear velocity and surface geometric roughness is emphasized.
Exploring relationships between semi-variogram and spatial autoregressive models
  • Autoregressive process ; Krigeage ; Model ; Spatial autocorrelation ; Spatial statistics ; Statistics
  • The paper seeks to continue the building of a common foundation for spatial statistics and geostatistics. Equations from the conditional autoregressive model of spatial statistics for estimating missing geo-referenced data have been found
  • to be exactly those best linear unbiased estimates obtained with the exponential semi-variogram model of kriging. Further articulation of such relations is outlined.
Les substitutions entre les céréales et les autres concentrés en alimentation animale. Une application à des élevages laitiers
  • Agricultural price ; Animal food ; Cereals ; Dairy farming ; Economic cost ; France ; Linear data processing;Linear data programming ; Livestock farming ; Model
Planning the work of County Courts : a location-allocation analysis of the northern circuit
  • Administrative unit ; Centrality ; Decision ; Great Britain ; Linear data processing;Linear data programming ; Location ; Location-allocation model ; Optimization ; Regional planning ; Spatial structure ; United Kingdom ; Wales
An automated approach to the classification of the slope units using digital data
  • An automated approach to the classification of the slope units using digital data
  • Automated mapping ; Canada ; Classification ; Data processing ; Numerical model ; Remote sensing ; SPOT ; Slope ; Yukon Territory
  • area dominated by slope processes in southwest Yukon Territory, is performed with a combined set of geomorphometric and spectral variables in a linear discriminant analysis. An automated method was developed to find the boundaries of geomorphological
  • Computer analysis of integrated digital data sets can be exploited for geomorphological classification using automated methods developed in the remote sensing community. In this study, geomorphological classification in a moderate- to high-relief
A linear programming model of the filtering process in the housing market
  • A linear programming model of the filtering process in the housing market
Modelling raindrop impact and splash erosion processes within a spatial cell : a stochastic approach
  • Modelling raindrop impact and splash erosion processes within a spatial cell : a stochastic approach
  • . The comparison of simulated data with measured data showed that this model could be applied to simulate the soil-splash process successfully.
  • linear function combining the kinetic energy and soil shear strength was used to estimate the impacted amount of soil particles by a single raindrop. The total splash amount was seen as the sum of the impact amount by all raindrops in the rainfall event
Cosmogenic Be 10 and Al 26 exposure ages of tors and erratics, Cairngorm Mountains, Scotland : timescales for the development of a classic landscape of selective linear glacial erosion
  • Cosmogenic Be 10 and Al 26 exposure ages of tors and erratics, Cairngorm Mountains, Scotland : timescales for the development of a classic landscape of selective linear glacial erosion
  • Earth surface processes ; Erosion rate ; Erratic boulder ; Glacial erosion ; Glacial features ; Isotope dating ; Model ; Scotland ; United Kingdom ; Weathering
  • to interpret nuclide data as ages. The measurements permit testing of the hypothesis of a pre-Quaternary age for Cairngorm tors.
The thermal regime of the active layer at the Murtèl rock glacier based on data from 2002
  • The thermal regime of the active layer at the Murtèl rock glacier based on data from 2002
  • amount of snow. Active layer temperatures are examined together with climate data and are used to discuss the processes which control the thermal regime of an active layer on a slope of a bouldery rock glacier surface : snow cover, snow depth, non-linear
  • Active layer temperatures are presented from a rock glacier in the Swiss Alps. The data represent a full year (2002) covering parts of 2 very different winters. Winter/spring 2002 was very cold and dry; fall 2002 was characterized by an unusual
Generating search directions in multiobjective linear programming using the analytic hierarchy process in The analytic hierarchy process.
  • Generating search directions in multiobjective linear programming using the analytic hierarchy process in The analytic hierarchy process.
Novel theoretical insights into geomorphic process-environment relationships using simulated response curves
  • Novel theoretical insights into geomorphic process-environment relationships using simulated response curves
  • The AA. examined a generalized additive modeling (GAM) based approach to provide new theoretical insights into process–environment relationships. More precisely, they (i) simulated the shapes of the relationships between geomorphic processes
  • and environmental variables based on GAM and (ii) compared the shapes of the simulated response curves to (a) the hypothetical curves based on theory and (b) the response curves produced by generalized linear modeling (GLM). The study is based on empirical
  • cryoturbation and solifluction data and environmental variables from subarctic Finland. The findings indicate that careful examination of the response curves may provide new insights into theoretical debates in the earth sciences.
Controls on modern alluvial fan processes in the central Alps, northern Italy
  • Controls on modern alluvial fan processes in the central Alps, northern Italy
  • Data from a set of 209 alluvial fans from the central Alps of Italy are presented in this paper and analysed with the help of various statistical techniques (linear regression, principal components analysis, cluster analysis, discriminant analysis
  • and logistic regression). First, they used modern sedimentary facies and historical records (flood events since 15th century), to distinguish between the 2 dominant sedimentary processes on alluvial fans : debris flows and streamflows. Then, in order to analyse
  • the main controls on past and present fan processes, 36 morphological, geological and land-use variables were analysed.
A field test of Tubino's (1991) model of alternate bar formation
  • Channel geometry ; Flood ; Fluvial dynamics ; Fluvial processes ; Hydrodynamics ; Illinois ; Meander ; Model ; United States
  • This study investigates the fluvial dynamics of straight natural stream channels. In particular, this experimental field study quantitatively assesses a physically based non-linear mathematical theory of alternate bar formation under unsteady
  • natural flow conditions within a straight alluvial stream. The study site is an artificially straightened section of the Embarras River located approximately 16 km south of Champaign, Illinois. Data were collected on channel form, gradient, alternate bar
A study on Model Reference Adaptive Control in economic development (IV) - Discrete polynomic non-linear system
  • A study on Model Reference Adaptive Control in economic development (IV) - Discrete polynomic non-linear system
  • The adaptive process of the economic development. - (SGA)