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Airtanker initial attack: a spreadsheet-based modeling procedure
2003
Canadian Journal of Forest Research
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Calculation procedures and potential applications of flight distance moments including the optimization of airbase location are illustrated. ...
Once this spatial distribution has been specified, the expected flight distance from the airtanker base to a random fire ignition point as well as higher moments of the flight distance distribution are ...
Thus, moments for the general area have been calculated using triangular area elements; for the highway and access road, line segments have been employed, and for the campsites and rest area, the formulas ...
doi:10.1139/x02-176
fatcat:www4p44ifjeljed5l544ggiyr4
Line moments and invariants for real time processing of vectorized contour data
[chapter]
1995
Lecture Notes in Computer Science
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Given the polygone approximation of contours the geometric moments can be formulated for line contours. ...
The resulting line moments (LM's) can be calculated for an arbitrary collection of contour fragments. ...
Computation of all other tasks as texture primitive generation, invariants calculation and classification takes 0.15 sec. ...
doi:10.1007/3-540-60298-4_280
fatcat:uk5v7xoy6vdpjfvqlf3q3b47dy
A Ground-Truthing Tool for Layout Analysis Performance Evaluation
[chapter]
2002
Lecture Notes in Computer Science
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This paper describes a new, flexible, ground-truthing tool. It is fast and easy to use as it performs page segmentation to obtain a first description of regions. ...
The resulting ground-truth regions are described in terms of isothetic polygons to ensure flexibility and wide applicability. ...
This paper presents a tool that generates ground truth using a flexible page segmentation approach [7] as a first step. ...
doi:10.1007/3-540-45869-7_27
fatcat:is2pxffsufadpdqv4fc4f6bkru
Exploratory analysis regarding the domain definitions for computer based analytical models
2017
IOP Conference Series: Materials Science and Engineering
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This new vision allows us to naturally assign a general number of attributes to the subdomains. ...
This new approach allows us to reuse the concepts and part of the data processing software instruments already developed. ...
For line segments that define a polygonal area there may be used specific conditions to test if a point is included in that area. ...
doi:10.1088/1757-899x/227/1/012109
fatcat:nmaeq2yki5epzjlobvmirnzmoe
The effect of alternative seismotectonic models on PSHA results – a sensitivity study for two sites in Israel
2018
Natural Hazards and Earth System Sciences
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The analysis shows that this underestimation is most probably due to a combination of factors, including source definitions as well as the GMPE used for analysis.</p> ...
</strong> We present a full probabilistic seismic hazard analysis (PSHA) sensitivity analysis for two sites in southern Israel – one in the near field of a major fault system and one farther away. ...
Norm Abrahamson, Debra Murphy, and Christie Hale are greatly thanked for their technical support with the Haz45 program. Edited by: Laura Peruzza Reviewed by: two anonymous referees ...
doi:10.5194/nhess-18-499-2018
fatcat:gru3aonntzd5rhq5luqhvsylbq
3D volumetric muscle reconstruction of the Australopithecus afarensis pelvis and limb, with estimations of limb leverage
[article]
2022
bioRxiv
pre-print
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Reconstructed muscle masses and configurations guided biomechanical modelling of the lower limb in comparison to a modern human. Muscle moment arms were calculated and summed per muscle group. ...
This approach is recommended for future studies aiming to model musculature in extinct taxa. ...
A correction factor was applied to each of these estimates to correct for issues in the convex hull approach which likely under-calculates segmental mass (see: Coatham et al. 2021) . ...
doi:10.1101/2022.11.24.517817
fatcat:blcuy4ucyjeizhgdogzpxuy4j4
Modeling Airtanker Flight Distance between Concurrent Fires: The Development and Use of Statistical Distribution Parameters
2008
Forest Science
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Moments of the distance distribution, derived in this article, can be used to characterize and evaluate fire-to-fire airtanker dispatch within and between protection areas. ...
A hypothetical example illustrates how a proposed change in an airtanker protection zone can affect not only airbase-to-fire flight distance but also fire-to-fire flight distance. ...
F i is the expected distance from line segment L to the line approached in the limit as the area ⌬A i becomes infinitesimally small; i.e., ⌬K goes to 0. ...
doi:10.1093/forestscience/54.1.47
fatcat:jzgcyzv62jhzjghl7qlhwsrp3q
Classification of pathological shapes using convexity measures
2009
Pattern Recognition Letters
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In addition, the new measures were applied to the classification of mammographic masses and lung field boundaries and were shown to perform well relative to a large set of common shape measures that appear ...
in the literature such as moments, compactness, symmetry, etc. ...
Acknowledgements I would like to thank the following people who kindly provided the data used in this paper, and which was invaluable for evaluating the proposed measures: Tim K. Lee and Rangaraj M. ...
doi:10.1016/j.patrec.2008.12.001
fatcat:5qclvqxswzfyzlcl7fcrt3g5di
Joint combination of point cloud and DSM for 3D building reconstruction using airborne laser scanner data
2007
2007 Urban Remote Sensing Joint Event
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More and more cities are looking for service providers able to deliver 3D city models in a short time. ...
Then, it combines the point cloud and the DSM for extracting a building mask from the off-terrain. ...
CONCLUSION The most relevant idea in the approach presented here is to combine the original point cloud and the generated DSM at strategic moments of the automatic segmentation and building reconstruction ...
doi:10.1109/urs.2007.371843
fatcat:z2he32ddufbmlcvxublkruptwq
The Effect of Alternative Seismotectonic Models on PSHA Results – a Sensitivity Study for the Case of Israel
2017
NHESSD
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We present a full PSHA sensitivity analysis for two sites in southern Israel &ndash; one in the near-field of a major fault system and one farther away. ...
We find that current practice in Israel, as represented by the most current version of the building code grossly underestimates the hazard, due to a combination of factors, including source definitions ...
Acknowledgements We thank the Israeli Ministry of Energy and National Infrastructure for funding this research. ...
doi:10.5194/nhess-2017-281
fatcat:nbklpj4jcfbq7oz3dpgmbij72u
A Constraint Satisfaction Framework with Bayesian Inference for Model-Based Object Recognition
[chapter]
2010
Lecture Notes in Computer Science
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A modified incremental search for CSP is designed that allows partial solutions and calls for stochastic inference in order to provide judgments of partial states. ...
A particular problem of passing different objects to a machine by a human hand is solved while applying the general framework. ...
Acknowledgments The paper has been supported by the Polish Ministry of Science and Higher Education with the grant N N514 1287 33. ...
doi:10.1007/978-3-642-15907-7_1
fatcat:5guaf62c5rhhhhmex3iqlmdbpm
Skew Angle Estimation of Urdu DocumentImages: A Moments Based Approach
2011
International Journal of Machine Learning and Computing
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This paper presents the skew angle estimation and correction for Urdu document images script using moments method. The basic idea is to draw a random polygon over the text in document. ...
This leads to thinning free preprocessing. The skew angle is calculated using Central moments and centroid of the document image. ...
The steps to be followed for getting back to the normal position include: 1) Base line identification 2) Centroid calculation using moments 3) Skew angle estimation using central moments and correction ...
doi:10.7763/ijmlc.2011.v1.2
fatcat:r4jjdpgw3bcmdc5hu7z3byq7ou
Region Of Interest Based Image Classification: A Study in MRI Brain Scan Categorization
[chapter]
2012
Data Mining Applications in Engineering and Medicine
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For smaller values of tolerance, the polygonal curve is approximated by a large number of line segments M which means that the approximation is very similar to the original curve. ...
Given a N-vertex polygonal curve C, approximate it by another polygonal curve C a with a given number of straight line segments M so that the approximation error is minimised. ...
doi:10.5772/50019
fatcat:kpxf6fpq4zb7pbrkjgultlmbza
AVERAGES FOR POLYGONS FORMED BY RANDOM LINES
1964
Proceedings of the National Academy of Sciences of the United States of America
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Goudsmit, and the author acknowledges with thanks communications from him containing unpublished formulas in both the twoand three-dimensional cases. Thanks are also due to D. G. Kendall, and to P. ...
A few of the results given above were also obtained by S. A. ...
The union of the line-sets S, C, and E1 consists of lines that pass within w of one chosen point and/or cross the line-segment x. ...
doi:10.1073/pnas.52.5.1160
pmid:16578577
pmcid:PMC300415
fatcat:hxxqmzcw5bdmpnvtxsysp344nq
Three-dimensional polygonal muscle modelling and line of action estimation in living and extinct taxa
2022
Scientific Reports
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are reliable and the resulting lines of action calculated sufficiently accurately. ...
AbstractBiomechanical models and simulations of musculoskeletal function rely on accurate muscle parameters, such as muscle masses and lines of action, to estimate force production potential and moment ...
Biomechanical models and simulations of musculoskeletal function rely on accurate muscle parameters, such as muscle masses and lines of action, to estimate force production potential and moment arms. ...
doi:10.1038/s41598-022-07074-x
pmid:35233027
pmcid:PMC8888607
fatcat:tczflrfbvbgc3pgjp6rwz4plgi
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