availability
[data transfer] The degree of ease with which a dataset or other object may be found or obtained.
Availability gaps: solutions for aviation
by James L. Farrell
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Selective Availability (SA) is the deliberate introduction of error to the precise timekeeping of the GPS satellites, thereby reducing both positioning and timing accuracy for civilian users. It was designed to provide U.S.
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Availability
The WaterObjects.NET Software Development Kit (SDK), documentation, and programming techniques samples are available today through the WaterObjects.NET early adopter program.
Data Availability - Creating digital spatial data is labor intensive and expensive.
Data Availability
Procedures for Obtaining Data
To place orders and to obtain additional information regarding technical details and price schedules, contact: Earth Science Information Centers (ESICs) ...
Data Availability
Before an attribute field is added to a coding sheet as a target for data capture, be sure the value is readily available and has importance to the operation of the agency.
[edit] Availability
As of Oracle version 10.2, potential users can elect to license Oracle Spatial with Oracle Enterprise Edition. Oracle Personal Edition bundles Oracle Spatial for no extra charge.
Availability of spatial data in digital forms has long been one of the most significant obstacles to the widespread development and use of GIS applications.
Availability of data is critical to the success of NASA's ESE. The EOS Data and Information System (EOSDIS ) must be responsive to this requirement.
Availability
The number of hours per day that a particular location has sufficient satellites (above the specified elevation angle and less than the specified PDOP value) to make a GPS position fix.
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Availability of Location technologies
Memory capacity
Device convergence
Robust mobile platforms ...
Availability and type of equipment.
Experience of personnel.
Terrain, vegetation, and weather.
Extent or area of project.
Priority of other projects.
Enemy or adversary intervention.
Availability of Census data
tabulation of statistics by reporting zones, e.g. population by county, population by age by county
crosstabulation, e.g. population by age and sex by county ...
availability
The degree of ease with which a dataset or other object may be found or obtained.
Selected availability; Selective availability; Signal accuracy; Situational awareness; Source acquisition
S&A
Sampling and analysis ...
Selective availability (SA) was the intentional error introduced by DoD to make sure that no hostile forces used the accuracy of GPS against the US or its allies. It introduced some noise into the GPS satellite clocks which reduced their accuracy.
Selective Availability (SA)
Selective Availability is a clock timing error factor previously introduced by the DOD as standard operation on the satellites.
Selective Availability (SA) - The intentional degradation of the satellite signals in the Global Positioning System (GPS) by the US Department of Defense.
Selective Availability (S/A) : A U.S. Department of Defense program to limit the accuracy of autonomous position fixes computed by civilian receivers. The error in position caused by S/A can be up to 100 meters.
Selective Availability
Ephemeris errors should not be confused with Selective Availability (SA), which is the intentional alteration of the time and epherimis signal by the Department of Defense. SA can introduce 0-70 meters of positional error.
Selective Availability (SA)
The random error, which the government can intentionally add to GPS signals, so that their accuracy for civilian use is degraded. SA is not currently in use.
SOG
See Speed Over Ground.
Table 3. Availability of nesting habitat for a 10.4-km2 area in central North Dakota used to illustrate linkage of a population simulation model to a GIS with habitat data derived from Landsat TM.
Habitat
Percent of area per treatmenta ...
Recently, the availability of inexpensive Global Positioning System receivers has made position information available to many more people than ever before.
Implications the availability of data is often the biggest factor in establishing the practicality of building a data model. We also commonjly see prcatical problems with data structures and software procedures.
Selective availability Random noise inserted into GPS signals by the US military for reasons of security. Users must acquire base data in order to remove the effects of selective availability.
supply The availability of services or goods at centers. An example of a type of supply is the availability of milk at grocery stores, cars at a car dealer, or the number of movie screens at a theater.
The GPS system was subject to Selective Availability, which meant that the service could be removed or degraded for strategic purposes. This had a significant impact on its accuracy.
GIS technology and the availability of digital data on regional and global scales enable such analyses. The satellite sensor output used to generate a vegetation graphic is produced by the Advanced Very High Resolution Radiometer (AVHRR).
Most plants are limited in their growth by the availability of nitrogen despite the fact that the atmosphere is 78% nitrogen gas. Only a few organisms have the ability to use atmospheric nitrogen.
Increasing demands for mapped data focused attention on data availability, accuracy and standards, as well as data structure issues.
However, the supply of global topographic maps has remained virtually the same: the availability (of free data at least) is poor, quality is variable, available maps are expensive, and it is not clear where to go to get what you want.
Calculation of the expected value of a decision option requires the availability of the probabilities attached to each possible environmental state (e.g. probability of any specific action taken by the competitor out of all possible actions).
We all benefit from the availability of a geoid model whether we realize it or not. The present and future use of space-based positioning systems, such as GPS, will continue to have positive scientific and economical impacts.
ORNL's Computer Sciences Division (now the Computational Physics and Engineering Divisi on), in cooperation with DOE's Grand Junction Office, was the national repository for all data collected and analyzed to assess the availability and location of ...
On-line availability varies from simple descriptions with agency addresses to searchable databases with metadata, locality maps, and/or browse images.
Publisher
The entity(s) responsible for facilitating availability of the resource, such as a publisher, distributor, or a corporate entity.
Contributors
his element is not used by ADS, as it causes too much confusion amongst users.
Multi-family housing and crime trends in Dallas, Texas
Wireless availability in public libraries in Austin, Texas
Building permit patterns as gentrification indicator in East Austin, Texas
Vacant land identification in Lakeway, Texas ...
This area was chosen based on the availability of a large amount of geo-spatial data collected during the compilation of the Commemorative Map of Iqaluit by the Centre for Topographic Information, ...
The near future will continue to see accelerating growth in data availability and computing power to support GIS
The strategic decision to make now is not whether, but when and how to use GIS to support decisions ...
This map is the cover of a brochure which was made to advertise the availability of overseas study scholarships (called Fellowships) for people living in New South Wales.
When GPS tracking, displays your current elevation (due to Selective Availability which can vary as much as 512 feet (156 meters); however, 95 percent of the time you can expect greater accuracy.) Elevation is the height above sea-level.
Exchange ...
Regulatory zones for streams, lakes and rivers, and wildlife management are mapped and assessed for their impact on wood supply that allows for keeping track of all diverse demands on the land and the variety of constraints on timber availability.
may be able to make creative use of the new availability of
mapping software to do their work. I wonder whether anyone
else out there might be doing something similar? -- I'd be
interesting in hearing about it. Meanwhile, I'm very happy ...
Many other GIS packages can be used to model Loran-C coverage. MapInfo was selected for its low cost, its availability, and the simplicity of use in the Windows environment.
When the system was created, timing errors were inserted into GPS transmissions to limit the accuracy of non-military GPS receivers to about 100 meters. This part of GPS operations, called Selective Availability, was eliminated in May 2000.
Because they are so accurate, civilian GPS receivers using the SPS signal are sometimes subjected to Selective Availability (SA) interference by the United States Government, to maintain optimum military effectiveness of the system.
the use of a particular class of software, the associated hardware tools such as digitizers and plotters, and digital geographic data in order to advance some specific purpose. The tool itself is inherently neutral, its development and availability ...
open specification A specification that promotes interoperability through its public availability to developers, who use it to develop software or hardware compatible with the common resource described in the specification.
When producting these maps, the speed with which a final product is made depends on the availability of the election data. Douglas County usually has complete results available by 11 pm the night of the election.
These analyses are made possible both by GIS technology and by the availability of digital data on regional and global scales.
 See also: Information, GIS, Environment, Location, Network
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