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  • National, regional, and corporate planning methodologies-system dynamics versus simultaneaous equation using regression
  • Defining phases of bedload transport using piecewise regression
  • Carrying capacity ; Colorado ; Discharge ; Fluvial dynamics ; Grain size distribution ; Linear regression ; Model ; Stream ; United States of America ; Wyoming ; Years 1990-99
  • The aim of this paper is to demonstrate the best-fit functions between measured bedload and discharge and provide support for the selection of a two-piece linear regression model with a distinct breakpoint that can be bounded with confidence limits
  • by applying bootstrapping techniques. The AA. present and demonstrate the application of the piecewise regression procedure for transport rates measured at 8 sites on the Fraser Experimental Forest near Fraser, Colorado, where 100 to 200 samples were collected
  • between 1992 and 1997. The piecewise regression model is evaluated further using data from 4 streams in Colorado and Wyoming.
  • Use of the linear quadratic approach to study the dynamic policy responses of a non linear model of the French economy
  • regressions. The examination of the 10 control variables has little influence in modifying the autonomous dynamics of the model. (INRA).
  • Dynamic policy responses of a model of the French economy. Advantage is taken of the linear behavior of the model around a reference trajectory. The linear approximation of the implicit state variable representation is determined by stepwise
  • Exploring the relations between riverbank erosion and geomorphological controls using geographically weighted logistic regression
  • Bank erosion ; Environmental management ; Erosion control ; Fluvial dynamics ; Historical geography ; Meander ; Model ; Regression analysis ; Riparian vegetation ; Spatial analysis ; Stream ; Twentieth Century ; United Kingdom ; Wales
  • regression (GWLR). The objective of this paper is to apply GWLR to model the spatial variation in the relation between erosion (presence or absence) and several controlling variables for the Afon Dyfi in West Wales. The practical implication of the result
  • Prediction of landslide susceptibility using rare events logistic regression : a case-study in the Flemish Ardennes (Belgium)
  • Ardenne ; Belgium ; Forecast ; Landslide ; Multivariate analysis ; Regression analysis ; Slope ; Slope dynamics ; Thematic map
  • In this paper a statistical multivariate method, i.e., rare events logistic regression, is evaluated for the creation of a landslide susceptibility map in the Flemish Ardennes. The methodology is based on the hypothesis that future landslides
  • Structural variation and dynamics of lodgepole pine forests in Lassen Volcanic National Park, California
  • Biogeography ; California ; Climatic variability ; Forest ; Microclimate ; National park ; Pine ; Soil properties ; United States ; Vegetation dynamics
  • Diameter structure, age/diameter regressions, and stem dispersion patterns reveal spatial variability in lodgepole pine forest structure and dynamics in Lassen Volcanic National Park (LVNP). Spatial variability in this early successional species
  • Can δ13C abundance, water-soluble carbon, and light fraction carbon be potential indicators of soil organic carbon dynamics in Zoigê wetland?
  • Carbon ; Carbon 13 ; China ; Climatic change ; Environmental degradation ; Humid environment ; Isotope analysis ; Mountain ; Plateau ; Qinghai ; Regression analysis ; Soil properties ; Tibet
  • . The results showed that the plant dominant species in the degraded wetland site were different from those in the non-degraded wetland sites. The regression analysis showed that LFOC was the best potential indicator of SOC dynamics with WSOC and soil δ13C being
  • In this study, four wetland sites and one degraded wetland site in the Zoigê alpine wetland, located at the Qinghai-Tibet Plateau, were selected to investigate the relationships of stable isotope and labile organic carbon dynamics with groundwater
  • elevation or water table level. The AA.also examine if the δ13C abundance, soil water soluble organic carbon (WSOC), light fraction organic carbon (LFOC), can be used as potential indicators of soil organic carbon (SOC) dynamics in these wetland sites
  • less useful as indicators, respectively. In addition, the absolute slope coefficients of the regression models increased as the soil depth increased, which indicated that the SOC turnover increased with soil depth.
  • Dynamic pedogenesis : new views on some key soil concepts, and a model for interpreting Quaternary soils
  • A model of pedogenesis is presented in an evolutional paradigm that emphasizes the integrated effects of dynamic and passive pedogenic vectors in directing pathways and in controlling rates of soil genesis through time. This model helps explain
  • the apparent minimal development and regressed character of some old soils and the rapid and strong development of some young ones.
  • Dynamic settlement processes : the case of U.S. immigration
  • Dynamic model ; Expansion method ; Immigration ; International migration ; Laws ; Origin ; Regression analysis ; Settlement ; United States
  • A general misspecification test for spatial regression models : dependence, heterogeneity, and nonlinearity
  • Chaos ; Econometry ; Regression analysis ; Spatial analysis ; Statistics ; System dynamics ; Test
  • A test strategy for spurious spatial regression, spatial nonstationarity, and spatial cointegration
  • Matrix analysis ; Model ; Regression analysis ; Simulation ; Spatial dynamics ; Statistics ; Test
  • Alps (The) ; Italy ; Mountain ; Natural hazards ; Regression analysis ; Slope dynamics ; Statistical analysis
  • to develop and test different predictive approaches, encompassing regression equations, geomorphological surveys and probabilistic analysis of time series. Regression techniques were used to correlate debris-flow magnitude to morphometric parameters
  • Sàstaviane na tematicni karti za dinamikata na naselenieto Drawing a set of thematic maps on population dynamics
  • sums up the mair trends and reveals three types of population dynamics in the Lovec district : progressive (5 municipalities including main urban centers), stable (2 municipalities) and regressive (25 municipalities - mostly rural). - (MB)
  • Compiling 4 thematic maps reflecting population dynamics in Bulgaria along with methodical guide-lines after CHEPKASOV and BOURYAN (1985). The first map presents the urbanisation changes over a period of 39 years. The second map illustrates
  • the space differences between the rural and urban population and relevant negative tendencies. The third map concerns the population dynamics for the whole period as well as for subperiods. This is shown on the example of the Lovec district. The fourth map
  • Channel geometry ; Fluvial processes ; Model ; Multivariate analysis ; Regression analysis ; Statistics
  • that promise to enhance our understanding of the structure and dynamics of fluvial systems.
  • Chute channel dynamics in large, sand-bed meandering rivers
  • Argentina ; Bolivia ; Braided channel ; Carrying capacity ; Channel geometry ; Discharge ; Hydrodynamics ; Meander ; Papua New Guinea ; Paraguay ; Regression analysis ; South America ; Stream ; Suspended load ; Tropical zone
  • This study applied binary logistic regression analysis to determine whether it is possible to predict chute initiation based on attributes of meander bend character and dynamics. Regression models developed for the Strickland River, Papua New Guinea
  • Expériences d'hydraulique appliquée à la morphologie et dynamique fluviale (Point des recherches et perspectives). Hydraulic experiments applied to fluvial morphology and dynamics)
  • The tests and experiments using gravel and steep slopes have been regrouped around the following themes: study of channels and equilibrium profiles obtained by regressive erosion. Study of carriage. Methods of measuring by tracers and formulas
  • Geographical information system ; Land use ; Landslide ; Mountain ; Precipitation ; Pyrénées ; Reforestation ; Regression analysis ; Slope dynamics ; Soil water ; Spain ; Twentieth Century
  • . A logistic regression routine was used to assess the influence of land use and vegetation recovery in the occurrence of shallow landslides. The result shows that the former arable fields on the valley slopes still facilitate lansliding, even after land
  • Data base ; Forecast ; Geographical information system ; Hong Kong ; Landslide ; Model ; Regression analysis ; Slope ; Slope dynamics ; Thematic map ; Tropical zone
  • of landslide frequency with the physical parameters contibuting to the initiation of landslides on Lantau Island in Hong Kong. This GIS database is then used to obtain a logistic regression model for predicting slope instability. This model is then imported
  • Japan ; Landslide ; Precipitation ; Regression analysis ; Slope ; Slope dynamics ; Soil properties ; Threshold
  • the physical properties of the hillslope materials relevant to slope stability analysis, and to understand the responses of subsurface pressure heads to rainfall. A multiple regression analysis was used to determine the critical rainfall level for landsliding
  • Alluvial cone ; Alps (The) ; Classification ; Flood ; Geomorphometry ; Italy ; Land use ; Mass movement ; Mountain ; Mudflow ; Natural hazards ; Northern Italy ; Sedimentary ; Slope dynamics ; Statistical analysis ; Watershed
  • 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