Results 1 - 10 of 56,471
Aarts, Geert [2007-06-20]
Management and conservation of populations of animals requires information on where they are, why they are there, and where else theycould be. These objectives are typically approached by collecting data on theanimals’ use of space, relating these to prevailing environmental conditionsand employing these relations to predict usage at other geographical regions.Technical advances in wildlife te ...
SUBJECT: argos; gray seal--scotland--geographical distribution; northern gannet--scotland--bass rock--geographical distribution; spatial behavior in animals--mathematical models; wildlife conservation
Heitmeyer, Richard 
This report presents two models that describe the tracks of ships during an arbitrary time interval. Both models consist of a track function that describes the tracks of the individual ships and a probability law on the total number of ships en route during the interval, the initial positions of those ships, and their nominal speeds. The probability law assumes that the ship departure times ar ...
SUBJECT: velocity; routing; ship motion; ship-track function; *deterministic models
Ivbulis, V. et al. 
This issue contains a collection of articles on mathematical modelling by professors, young researchers and doctoral students of the Faculty of Economics and management of the University of Latvia and Riga Technical University (RTU). The application of modelling methods and mathematics in economic research has deep traditions in Latvia. The first mathematical models of Latvian agriculture were ...
SUBJECT: investigacion; consumer expenditure; hacienda publica; letonia; consumo familiar
POSTED TO: Humanities and social sciences: Latvia (Latvia) [1022-4483]
Agriculture production and transport infrastructure in East Africa: An application of spatial autoregression
Iimi, Atsushi; You, Liangzhi; Wood-Sichra, Ulrike; Humphrey [2015-06-12]
SUBJECT: agricultural production; africa south of sahara; c34 multiple or simultaneous equation models: truncated and censored models, switching regression models; spatial autoregressive model; transport
Ames, Morgan et al. [2007-06-15]
U.S. Navy and commercial ships have been lucrative targets for terrorist organizations. Realizing that ships are most vulnerable while in-port, adequate measures must be employed by port facilities to ensure vessel security. Commercial and naval ports have been set as a national priority in Homeland Security Presidential Directive 13. A successful terrorist strike against a port could produce ...
SUBJECT: scenarios; port of singapore; port of oakland; importation of contraband of weapons of mass destruction; improvised weapons
Potential impacts of climate change on vegetation distributions, carbon stocks, and fire regimes in the U.S. Pacific Northwest
Rogers, Brendan M. [2009-07-31]
The U.S Pacific Northwest contains a wide variety of ecosystems, all subject to relatively dry summers and wet winters. As has been shown with paleoclimatic and paleoecological data, the region is vulnerable to changes in climate. We assessed the sensitivities of vegetation distributions, carbon stocks, and fire regimes to 21st century climate change by running MC1, a dynamic general vegetatio ...
SUBJECT: vegetation and climate -- oregon -- mathematical models; carbon cycle (biogeochemistry) -- washington (state); carbon; northwest; climatic changes -- environmental aspects -- washington (state) -- mathematical models
Observed and Modeled Bio-Optical, Bioluminescent, and Physical Properties during a Coastal Upwelling Event in Monterey Bay, California
Shulman, Igor et al. [2011-01-27]
During spring and summer time, coastal upwelling influences circulation and the ecosystem dynamics of Monterey Bay, California, which is recognized as a National Marine Sanctuary. Observations of physical and bio-optical properties (including bioluminescence) together with results from dynamical biochemical and bioluminescence models are used to interpret the development of the upwelling event ...
SUBJECT: sampling; radiance; *biooptical properties; air water interactions; *monterey bay(california)
Amein, Michael et al. [1991-09]
Prepared in collaboration with Amein & Associates, Raleigh, NC.
SUBJECT: input; bays; physical and dynamic oceanography; microcomputers; flow