Quality aspects of environmental impact assessment reports in the Free State Province, South Africa
Afrique du Sud ; Développement durable ; Environnement ; Etude d'impact ; Free State ; Gestion des ressources ; Impact économique ; Réglementation
Economic impact ; Environment ; Free State ; Impact study ; Regulation ; Resource management ; South Africa ; Sustainable development
This paper examines the quality aspects of Environmental Impact Assessments (EIA) in the Free State Province by utilising the disaggregate approach and applying it to a systematic sample of EAIs conducted from 1997 to 2002. Disparities in the value
Foreign direct investment and state export performance
Competitiveness ; Economic impact ; Export ; Foreign investment ; International trade ; Investment ; Model ; Regional economy ; United States of America
A frequently noted but little studied issue within the debate over FDI is the impact of FDI on U.S. foreign trade, and particularly on the foreign trade of U.S. regions. This study assesses the effects of FDI on the manufacturing export performance
of U.S. states during the period from 1980 to 1991. Results indicate that increased levels of FDI are positively related to future improvements in state manufacturing export performance.
[b1] Dep. of Geography, The Pennsylvania State Univ., University Park, Etats-Unis
One objective of this study was to illustrate the types of information on weather and impacts that can be quickly gathered and why it is seen as useful. The second objective was to assess those first-order impacts that occurred in a climatologically
A synthetic approach to estimating the impacts of telecommuting on travel
Commuting ; Demand ; Economic impact ; Labour ; Model ; Teleworking ; Transport ; United States of America
Demande ; Etats-Unis ; Impact économique ; Migration alternante ; Modèle ; Transport ; Travail ; Télétravail
A multiplicative model is proposed as a framework for examining the current knowledge in forecasting the demand for telecommuting and the resulting transport impacts. An illustratve example is developed, using plausible values for each factor
in the model. In any event, it is likely that the aggregate travel impacts will remain relatively flat into the future, even if the amount of telecommuting increases considerably.
L'article est une application d'une technique multiplicative d'input-output développée par Buford et Kate, en analysant l'impact de l'industrie à haute technologie dans une région rurale.
This paper considers the effects of a changing dollar on aggregate state output, and for the agricultural, manufacturing and all other sectors for the contiguous 48 US states during the period 1972-89. After controlling for productivity
differentials between the US and its major trading partners, the findings indicate that in the long run, states have more to fear from slow productivity growth than from fluctuations in the dollar.
Accessibility ; Environment ; Facilities ; Impact study ; Location ; Location choice ; Model ; Nuisance ; Service ; United States of America
Accessibilité ; Choix du site ; Environnement ; Equipement ; Etats-Unis ; Etude d'impact ; Localisation ; Modèle ; Nuisance ; Service
The article presents a location planning approach which addresses the issues of impact dispersion and regional equity in the context of undesirable facilities. A number of specific modeling approaches for addressing this problem are introduced
The impact of vegetation changes on evaporation and runoff
Colorado ; Evaporation ; Impact ; Land use ; Methodology ; Model ; Rill wash ; Switzerland ; United States of America ; Vegetation ; Vegetation dynamics ; Watershed
Bassin-versant ; Colorado ; Dynamique de la végétation ; Emmental ; Etats-Unis ; Evaporation ; Impact ; Modèle ; Méthodologie ; Ruissellement ; Suisse ; Utilisation du sol ; Végétation
Research context and methodology are considered for the determination of the impact of vegetation changes on evaporation and runoff. Most of the important advances in understanding of the problem since 1948, have resulted from combining
Impact of a flood on southern California riparian vegetation
Biodiversity ; Biogeography ; California ; Ecosystem ; Flood ; Impact ; Regression analysis ; Riparian vegetation ; United States of America
Analyse de régression ; Biodiversité ; Biogéographie ; California ; Crue ; Ecosystème ; Etats-Unis ; Impact ; Végétation ripicole
This study assesses flood impacts on riparian vegetation in two watersheds within the Transverse Ranges. Data collected in 1993 were compared to baseline data from 1990 to measure the effect of a 1992 flood.
Climatic impact on isovolumetric weathering of a coarse-grained schist in the northern Piedmont Province of the central Atlantic States
Chemical alteration ; Crystalline rocks ; Geochemistry ; Geomorphogenesis ; Maryland ; Model ; Periglacial features ; United States ; Weathering
The possible impact of periglacial climates on the rate of chemical weathering of a coarse-grained plagioclase-muscovite-quartz schist has been determined for a small watershed near Baltimore, Maryland. The results suggested by the chemical
weathering rates indicates a need to reconsider theories of landscape evolution as they apply to the northern Piedmont Province of the mid-Atlantic states.
Impacts of flow diversion for small hydroelectric power plants on sediment transport, Northwest Washington
Aménagement hydraulique ; Centrale hydraulique ; Dynamique fluviale ; Dérivation de cours d'eau ; Ecosystème ; Etats-Unis ; Granulométrie ; Habitat ; Impact ; Poisson ; Transport sédimentaire ; Washington State
Ecosystem ; Fish ; Fluvial dynamics ; Grain size distribution ; Habitat ; Hydraulic works ; Hydro-electric station ; Impact ; River diversion ; Sediment transport ; United States of America ; Washington State
This paper presents a review of 4 infectious diseases found in the southwestern USA that are impacted by climate conditions. Hantavirus and plague are spread by rodents, dengue is transmitted through the bite of the Aedes mosquito
and coccidioidomycosis is caused by a soil dwelling fungus. For each disease, an introductory section briefly outlines the importance of the illness within the Southwest, and a review of climate impacts on the disease follows. Finally, future research needs, to more
Climate change impacts on soil erosion in Midwest United States with changes in crop management
Agricultural land use ; Agricultural practice ; Climatic change ; Forecast ; Impact ; Midwest ; Model ; Runoff ; Soil erosion ; United States of America ; Water erosion
Changement climatique ; Ecoulement ; Erosion des sols ; Erosion hydrique ; Etats-Unis ; Impact ; Midwest ; Modèle ; Pratique culturale ; Prévision ; Utilisation agricole du sol
In this study, changes in management were assigned based on previous studies of crop yield, optimal planting date, and most profitable rotations under climate change in the Midwestern United States. The soil erosion model appeared to underestimate
the impact of change in crop type, particularly to soybeans. This research shows that future crop management changes due to climate and economics can affect the magnitude of erosional impacts beyond that which would be predicted from direct climate change