منابع مشابه
Accuracy of Heights from Ordnance Survey Maps
1) Spot heights at summits have an accuracy of about ±3.3m at all map scales, in agreement with the published figure. 2) Levelled heights from old 6-inch maps can be a few metres below the summit but are unlikely to be more than a few tenths of a metre higher. 3) The accuracy of old and new 1:50k maps is similar, but where heights have changed the old height has a tendency to be too low. 4) Spo...
متن کاملMarine Survey System for Detection of Unexploded Ordnance
With support from the Strategic Environmental Research and Development Program (SERDP) and Environment Security Technology and Certification Program (ESTCP), SAIC has developed and demonstrated a marine unexploded ordnance (UXO) survey system designed for use in shallow water (<9.1m). The air foil shaped sensor platform has two actuatorcontrolled elevators to control depth, altitude and attitud...
متن کاملExperiences of Using OWL at the Ordnance Survey
Current developments within the information technology industry are creating new opportunities for traditional information suppliers such as Ordnance Survey. In particular the ability to electronically trade information creates opportunities to increase the use of Ordnance Survey’s topographic information in ways that can be go beyond the delivery of such data in the form of a map. The future d...
متن کاملSurvey of Papers
September and December. Rapidity of Publication.-All papers accepted for publication will be printed, so far as is possible, in the next following issue of the Journal, if received before the first day of the month preceding publication. Long papers, or papers with illustrations, may, however be delayed if not received earlier. Reprints.-25 reprints will be supplied free to authors who are regi...
متن کاملTKDE Guidelines for Survey Papers
IEEE Transactions on Knowledge and Data Engineering (TKDE) seeks to publish select survey papers each year. Papers submitted in the ordinary way to the journal may be surveys. In addition, the journal will from time to time invite established researchers to provide surveys on topics relevant to what they have recently published in TKDE. Surveys should refl ect an area that is central to TKDE. S...
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ژورنال
عنوان ژورنال: Nature
سال: 1931
ISSN: 0028-0836,1476-4687
DOI: 10.1038/127122a0