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Institution

Swedish Defence Research Agency

GovernmentStockholm, Sweden
About: Swedish Defence Research Agency is a government organization based out in Stockholm, Sweden. It is known for research contribution in the topics: Radar & Synthetic aperture radar. The organization has 1413 authors who have published 2731 publications receiving 56083 citations. The organization is also known as: Totalförsvarets forskningsinstitut.


Papers
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Journal ArticleDOI
TL;DR: In this paper, finite element techniques are widely used for analysing non-linear mechanical processes, due to their inherent lack of convergence problems, and the energy content in the finite element is high.
Abstract: Due to their inherent lack of convergence problems explicit finite element techniques are widely used for analysing non-linear mechanical processes. In many such processes the energy content in the ...

118 citations

Journal ArticleDOI
TL;DR: A detailed investigation of HPGe detector response for improved Monte Carlo efficiency calculations is presented in this article, where HPGe detectors are used for Monte-Carlo efficiency calculations and HPGe response is investigated.
Abstract: A detailed investigation of HPGe detector response for improved Monte Carlo efficiency calculations

116 citations

Journal ArticleDOI
TL;DR: In this paper, the SuperNova / Acceleration Probe (2000; SNAP) was used to collect a large number of supernovae with z < 2 and to determine the parameters in a linear equation of state w(z ) = w0 +w1z to within a statistical uncertainty of 0:04 for w0 and +0:15 0:17 for w1 assuming that the universe is known to be flat and an independent high precision (m = 0 :015) measurement of the mass density m, is used to constrain the t.
Abstract: The use of Type Ia supernovae as calibrated standard candles is one of the most powerful tools to study the expansion history of the universe and thereby its energy components. While the analysis of some 50 supernovae at redshifts around z 0:5 has provided strong evidence for an energy component with negative pressure, \dark energy", more data is needed to enable an accurate estimate of the amount and nature of this energy. This might be accomplished by a dedicated space telescope, the SuperNova / Acceleration Probe (2000; SNAP), which aims at collecting a large number of supernovae with z< 2. In this paper we assess the ability of the SNAP mission to determine various properties of the \dark energy." To exemplify, we expect SNAP, if operated for three years to study Type Ia supernovae, to be able to determine the parameters in a linear equation of state w(z )= w0 +w1z to within a statistical uncertainty of0:04 for w0 and +0:15 0:17 for w1 assuming that the universe is known to be flat and an independent high precision (m =0 :015) measurement of the mass density m, is used to constrain the t. A further improvement can be obtained if, in addition to the high-z events, a large number of low-z supernovae are included in the sample.

112 citations

Journal ArticleDOI
01 Apr 2009-Bone
TL;DR: The present study supports the suggestion of the subendocortical layer as a transitional zone, which can readily be transformed into trabecular bone in response to immobilization, and confirms that endocorticals circumference can account for the different amounts of bone loss in the tibia.

112 citations

01 Jan 2001
TL;DR: A number of methods supporting automatic construction of 3D digital terrain models, especially ground surface modelling and detection and measurement of individual trees will be discussed, and a special data representation structure for the terrain model allowing efficient data storage and data access will be presented.
Abstract: Very detailed high-resolution (3D) digital terrain models can be obtained using airborne laser scanner data. However, laser scanning usually entails huge data sets even for moderate areas, making data management and analysis both complex and time consuming. For this reason, automatic terrain modelling and efficient storage structures supporting data access are needed. In this paper a number of methods supporting automatic construction of 3D digital terrain models, especially ground surface modelling and detection and measurement of individual trees will be discussed. Furthermore automatic and/or interactive terrain feature analysis will be discussed. A special data representation structure for the terrain model allowing efficient data storage and data access will be presented. Beside this, it is possible to create a symbolic information structure from the terrain model that can be used in queries for determination of different terrain features, such as ditches or ridges etc., but also for detection of changes in the terrain.

112 citations


Authors

Showing all 1417 results

NameH-indexPapersCitations
Anders Larsson80130733995
Anders Johansson7553821709
Anders Eriksson6867919487
Dan S. Henningson6636919038
Bengt Johansson6663519206
Anders Sjöstedt6319611422
Björn Johansson6263716030
Mats Gustafsson6152018574
D. G. Joakim Larsson5815113687
Anders Larsson5419855761
Mats Tysklind5325017534
Jerker Fick511438787
Erik Johansson501149437
Göran Finnveden4919312663
Ian A. Nicholls451947522
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20232
20228
202163
202074
2019102
201894