Academic literature on the topic 'Three-dimensional modelling'

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Journal articles on the topic "Three-dimensional modelling"

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Cardona, Alberto. "Flexible three dimensional gear modelling." Revue Européenne des Éléments Finis 4, no. 5-6 (January 1995): 663–91. http://dx.doi.org/10.1080/12506559.1995.10511205.

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Boyd, R. K., and J. H. Kent. "Three-dimensional furnace computer modelling." Symposium (International) on Combustion 21, no. 1 (January 1988): 265–74. http://dx.doi.org/10.1016/s0082-0784(88)80254-6.

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Singh, G. D. "Digital diagnostics: Three-dimensional modelling." British Journal of Oral and Maxillofacial Surgery 46, no. 1 (January 2008): 22–26. http://dx.doi.org/10.1016/j.bjoms.2006.10.008.

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Gavrysh, V. I. "Modelling the temperature conditions in three-dimensional piecewise homogeneous elements for microelectronic devices." Semiconductor Physics Quantum Electronics and Optoelectronics 14, no. 4 (December 5, 2011): 478–81. http://dx.doi.org/10.15407/spqeo14.04.478.

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White, Oliver. "Three-dimensional modelling at Clays Lake." Dams and Reservoirs 30, no. 2 (June 2020): 60–65. http://dx.doi.org/10.1680/jdare.20.00011.

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Samuilik, Inna, and Felix Sadyrbaev. "Modelling Three Dimensional Gene Regulatory Networks." WSEAS TRANSACTIONS ON SYSTEMS AND CONTROL 16 (December 28, 2021): 755–63. http://dx.doi.org/10.37394/23203.2021.16.67.

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We consider the three-dimensional gene regulatory network (GRN in short). This model consists of ordinary differential equations of a special kind, where the nonlinearity is represented by a sigmoidal function and the linear part is present also. The evolution of GRN is described by the solution vector X(t), depending on time. We describe the changes that system undergoes if the entries of the regulatory matrix are perturbed in some way.
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PARK, YOUNG H., and DENNIS B. WEBSTER. "Modelling of three-dimensional warehouse systems." International Journal of Production Research 27, no. 6 (June 1989): 985–1003. http://dx.doi.org/10.1080/00207548908942603.

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Sheffer, M. R., and D. W. Oldenburg. "Three-dimensional modelling of streaming potential." Geophysical Journal International 169, no. 3 (June 2007): 839–48. http://dx.doi.org/10.1111/j.1365-246x.2007.03397.x.

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Beamish, David. "Three-dimensional modelling of VLF data." Journal of Applied Geophysics 39, no. 2 (June 1998): 63–76. http://dx.doi.org/10.1016/s0926-9851(98)00012-3.

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Pain, C. C., M. D. Piggott, A. J. H. Goddard, F. Fang, G. J. Gorman, D. P. Marshall, M. D. Eaton, P. W. Power, and C. R. E. de Oliveira. "Three-dimensional unstructured mesh ocean modelling." Ocean Modelling 10, no. 1-2 (January 2005): 5–33. http://dx.doi.org/10.1016/j.ocemod.2004.07.005.

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Dissertations / Theses on the topic "Three-dimensional modelling"

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Kay, Gillian Evelyn. "Three-dimensional modelling of metal evaporated tape." Thesis, University of Central Lancashire, 1999. http://clok.uclan.ac.uk/20078/.

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As developments in magnetic recording increase, the demands for high density recording media continue to rise. One particular medium developed towards meeting these needs is the commercially successftil metal evaporated (ME) tape. To provide a deeper understanding of the magnetic processes occurring in recording media, theoretical studies are carried out to complement experimental observations. Therefore, this thesis is concerned with developing a micromagnetic model to simulate the magnetic behaviour of ME tape. ME tape consists of bundles of granular columns which are tilted towards the film normal. The morphology of the film influences the magnetic behaviour and a 3D model is developed in this thesis to represent the columnar structure and the granular nature of ME tape. A Monte Carlo algorithm, consisting of a 'move and grow' procedure, is developed to generate an irregular system of spherical grains whose radii were generated from a log-normal distribution. This structure provides the foundation for modelling columns of ME tape. Initially an isolated column of ME tape was investigated. Grains were considered to be single domain and the dynamic process of the magnetic moments was explored by the Landau-Lifschitz equation. The model demonstrated that as the strength of the exchange coupling parameter increased, then moments which were strongly coupled resisted large negative fields and square hysteresis loops with a high coercivity were produced. Reversal of the moments was observed to be initiated at the ends of a column and then propagated throughout the column. This was attributed to large demagnetising fields and was particularly evident in the model with aligned easy axes. If the easy axes were randomiy orientated then more disorder was present in the model and moments rotated incoherently. This produced hysteresis loops that were less square than those of the aligned model. The results also showed how the microstructure influenced the reversal processes. Simulations on assemblies of interacting columns of ME tape highlighted that, when exchange coupling was weak, moments reversed incoherently throughout the structure. However, increasing the strength of the exchange coupling caused a high degree of cooperative reversal to occur in individual columns. As moments reverse their direction they initially relax towards the long axis of a column due to column demagnetising effects. The model demonstrates that as moments reverse there is a changing balance between magnetostatic (demagnetising) and exchange interactions within and between columns. The model was considered to be a good representation of ME tape, and the results obtained not only complement previous studies but provide a deeper understanding of the reversal processes occurring both within and between columns of ME tape.
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Cachola, Danny G. "Modelling and animating three-dimensional articulate figures." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/25851.

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This thesis describes an animation extension to a high-level graphical programming language which provides constructs for the definition, manipulation, and external representation of three-dimensional articulate figures and and their associated movements. The extension permits the definition of models consisting of segments and joints and the specification of each model's motion at a high level of abstraction. The relationship of the extension with respect to the host language is discussed and a general description of the animation language's design and implementation is given. The modelling and motion constructs are discussed and examples of the constructs are presented. It is concluded that high level animation permits the implementation of sophisticated application programs that are easy to read and understand.
Science, Faculty of
Computer Science, Department of
Graduate
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Burrows, Justin. "Vector modelling three-dimensional engineering surface topography." Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286805.

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Tung, D.-K. "A knowledge-based three-dimensional modelling system." Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639269.

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As manufacturers strive towards high-quality production, automated industrial inspection is a potent resource in the design of cost-effective systems which can ensure that products meet all their design specifications. However, in reality, only in well-controlled applications are economically usable systems being taken into daily use. Where such systems are being used, they are seen to be primarily addressing 2-dimensional inspection problems. This is not surprising, given the highly complex problems which must be dealt with in practical, real-world environments. However, there is an urgent need to move towards acceptable machine-vision systems which not only can operate in industrial environments, but also offer the benefits of 3-dimensional visual representation - so vital in any real inspection situation. A fundamental aspect of any inspection system is the development of inspection models - to be used in subsequent inspection procedures. The generation of these models is a non-trivial task, and one which is increasingly being seen to be best done using operator assistance - as shown, for example, in the work of Chen [34]. However, most current work in such model generation has been tackled in the 2-D arena. This thesis addresses the problem of providing high-quality, visually meaningful, representations of 3-dimensional bodies, drawing information from 2 simple, but industrially-rugged, 2-dimensional images, and using operator assistance to determine the final models. When combined, the resulting 3-dimensional representation provides a valuable reference to an object's total physical structure. The models themselves allow for accurate inspection of the objects' physical parameters.
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Faraz, A. "Three dimensional force modelling for milling operations." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381031.

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Haidekker, Andras. "Radiation modelling in complex three dimensional enclosures." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1991. http://theses.uqac.ca.

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Kleinermann, Frederic. "Three dimensional modelling of Electrical Impedance Tomography." Thesis, University of Salford, 2000. http://usir.salford.ac.uk/43047/.

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Electrical Impedance Tomography (ElT) is an emerging imaging technique with applications in the medical field and in the field of industrial process tomography (lPT). Until recently, data acquisition and image reconstruction schemes have been constructed with the assumption that the object being imaged is two-dimensional. In recent years, some research groups have started to address the third dimensional aspects of ElT by both building three dimensional enabled data acquisition systems and solving the three dimensional Forward Problem numerically since this allows the possibility of modelling complex shapes. However, solving the Forward Problem analytically is still very attractive as an analytical solution does not depend on the way the domain has been meshed. Furthermore, if dynamic images are reconstructed which are less sensitive to the model of the electrodes employed, the shape of the object being imaged and the position of the electrodes, an analytical solution to the Forward Problem can be used to reconstruct dynamic three dimensional images. This thesis will start by describing how a full analytical solution for a finite right circular cylinder (which approximately models the human thorax) on which two electrodes have been placed, is derived. It will be shown that the analytical solution has two different forms. Results will be presented detailing the convergence performance of the two different forms as well as comparisons between the analytical solution and experimentally obtained data. Finally three dimensional images reconstructed using these methods will be presented. In order to better approximate the shape of the human thorax, the above work has been extended to provide an analytical solution for an elliptical cylinder and this is presented in this thesis for the first time together with some simulation results. Today in Multi-frequency Electrical Impedance Tomography (MEIT), new hardware for recording measurements operating above 1MHz is now available. This high operating frequency raises the question of the validity of the employed quasi-static conditions used in the associated Forward Problem modelling. It is important to be able to determine when the quasi-static conditions fail and to investigate the differences between a solution to the Forward Problem based on quasi-static conditions and the one based on non quasistatic conditions at these frequencies. This thesis details the derivation of a new analytical solution based on non quasi-static conditions for a finite right circular cylinder having two electrodes placed on its boundary. Some comparisons between the new analytical solution and data obtained from in-vitro experiments will be presented in this thesis. A comparison between the new analytical solution and the analytical solution derived earlier in this thesis (which is based on quasi-static conditions) is also conducted. Whilst these results are preliminary results, they reveal that for situations associated with imaging the human thorax the quasi-static assumption appear violated when most modern MEIT systems are employed. This frequency dependent three dimensional analytical Forward Problem work has wide ranging implications for the future of MEIT. The thesis will conclude with some initial thoughts on how to incorporate anisotropy into three dimensional Forward Problem solutions.
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Barnett, Nicholas David. "Measurement and modelling of three dimensional scapulohumeral kinematics." Thesis, University of Newcastle upon Tyne, 1996. http://hdl.handle.net/10443/3588.

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The term scapulohumeral rhythm is commonly used to describe the two dimensional rotation of the scapula accompanying motion of the arm. Despite the development of a variety of measurement techniques, including radiography, goniometry and three dimensional digitisation, the complete three dimensional kinematics of the scapula have never been presented. Nor have the effects of arm motions outside elevation in the coronal, sagittal or scapula planes been considered. Employing the Isotrak®" electromagnetic measurement system, this study has developed and validated a new method to simultaneously measure the three dimensional kinematics of the scapula and humerus. Euler angle rotations of the· scapu·lawere defined in a sequence approximately analogous to clinical definitions. For the first time, the three dimensional displacements of the scapula have also been determined. 950/0 confidence intervals for lateral rotation of the scapula during humeral elevation in the coronal plane have been calculated at under 4°, Significantly smaller than those presented by previous authors. A mathematical model of three dimensional scapulohumeral kinematics has been developed, capable of predicting the position and orientation of the scapula for a given orientation of the humerus over a wide range of humeral motion. Using this model system, the effects of humeral azimuth, elevation and rotation on the kinematics of the scapula have been investigated. Humeral elevation was seen to have the largest effect, causing the scapula to rotate laterally, retract and tip backwards. Humeral azimuth. has no noticeable effect on the lateral rotation of the scapula, although it causes the scapula to retract, and to tip backwards slightly. Rotation of the humerus has littre effect on the kinematics of the scapula. However, when approaching maximal internal rotation, the ligaments around the glenohumeral joint impose a kinematic constraint on the scapula, resulting in elevation of the scapula upon the thoracic cage.
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Sides, Edmund John. "Modelling three-dimensional geological discontinuities for mineral evaluation." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/8809.

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Hodgetts, David. "Three dimensional numerical modelling of continental lithosphere deformation." Thesis, Keele University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295800.

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Books on the topic "Three-dimensional modelling"

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Hassan, Peter J. Three dimensional discrete element modelling of soils. Ottawa: National Library of Canada, 1990.

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Tarlowski, C. Magnetic modelling of two and three-dimensional bodies. Canberra: Australian Govt. Pub. Service, 1989.

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Goossens, K. G. Three dimensional modelling of particle filled polymer film. Manchester: UMIST, 1994.

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Tarlowski, C. Magnetic modelling of two and three-dimensional bodies. Canberra: Australian Government Publishing Service, 1989.

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Dhaka, University of, ed. Three-dimensional groundwater modelling: A study of Southwest Bangladesh. Dhaka: University of Dhaka, 2000.

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Bahnfleth, William P. Three-dimensional modelling of heat transfer from slab floors. Champaign, Ill: US Army Corps of Engineers, Construction Engineering Research Laboratory, 1989.

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Antonio, Moretti, ed. Volcanoes: Formation, eruptions, and modelling. Hauppauge, NY: Nova Science Publishers, 2009.

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Odling, Noelle E. Structural analysis and three-dimensional modelling at Gamsberg, N.W. Cape. [Cape Town]: University of Cape Town Dept. of Geology, Chamber of Mines Precambrian Research Unit, 1987.

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Mealing, Stuart. Mac 3D: Three-dimensional modelling and rendering on the Macintosh. Oxford: Intellect, 1994.

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AutoCAD 2014: 3D modelling. Dulles, VA: Mercury Learning and Informarion, 2014.

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Book chapters on the topic "Three-dimensional modelling"

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Meguid, S. A. "Three-Dimensional Automated Modelling." In Integrated Computer-Aided Design of Mechanical Systems, 13–24. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3409-2_2.

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Cox, B. N. "Modelling Three-Dimensional Composites." In Advanced Technology for Design and Fabrication of Composite Materials and Structures, 49–62. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8563-7_4.

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Davies, B. L., A. J. Robotham, and A. Yarwood. "Three-dimensional modelling software." In Computer-aided Drawing and Design, 75–102. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3074-5_4.

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Klawonn, Frank. "Modelling Three-Dimensional Objects." In Undergraduate Topics in Computer Science, 129–60. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2733-8_6.

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Nyemba, Wilson R. "Three-dimensional solid modelling." In Computer Aided Design, 129–47. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003288626-9.

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Boustani, Ihsan. "Three-Dimensional Polyhedra." In Molecular Modelling and Synthesis of Nanomaterials, 415–501. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-32726-2_8.

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Chen, Zengtao, and Cliff Butcher. "Three-Dimensional Particle Fields." In Micromechanics Modelling of Ductile Fracture, 201–21. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6098-1_8.

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Ginzburg, E. I., and V. T. Gulyaev. "A Three-Dimensional Model of Ionospheric F-Region." In Ionospheric Modelling, 305–21. Basel: Birkhäuser Basel, 1988. http://dx.doi.org/10.1007/978-3-0348-6532-6_5.

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Crean, P. B., T. S. Murty, and J. A. Stronach. "The Three-Dimensional Model: GF6." In Mathematical Modelling of Tides and Estuarine Circulation, 336–431. Berlin Heidelberg New York: Springer-Verlag, 2013. http://dx.doi.org/10.1002/9781118669167.ch13.

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Jaeschke, Gerald, Piklu Gupta, and Matthias Hemmje. "Modelling Interactive, Three-Dimensional Information Visualizations." In Lecture Notes in Computer Science, 197–206. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-31842-2_20.

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Conference papers on the topic "Three-dimensional modelling"

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Teixeira Régis, C. R., and L. Rijo. "Three-Dimensional EMAP Modelling." In 4th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 1995. http://dx.doi.org/10.3997/2214-4609-pdb.313.192.

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Gertnerts, Ugis, Sandra Balode, Elza Linina, Martiņs Narels, Roberts Zabels, and Ilmars Osmanis. "Compact solid-state multi-focal display engine for near-eye applications." In Digital Holography and Three-Dimensional Imaging. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/dh.2022.w5a.21.

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In this work a concept of compact solid-state multi-focal display architecture has been developed. Based on modelling data validity has been proven. A footprint reduction by a factor of 3 was achieved.
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Parsonson, Louis, and Li Bai. "Three-dimensional angiogenesis modelling on the GPU." In 2014 7th International Conference on Biomedical Engineering and Informatics (BMEI). IEEE, 2014. http://dx.doi.org/10.1109/bmei.2014.7002731.

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Forrest, A. R. "User interfaces for three-dimensional geometric modelling." In the 1986 workshop. New York, New York, USA: ACM Press, 1987. http://dx.doi.org/10.1145/319120.319137.

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Brust, Frederick W., and David L. Rudland. "Three Dimensional Aspects of Computational Weld Modelling." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61558.

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Many computational weld models and the corresponding solutions are performed using two dimensional models. For instance, many models of circumferential pipe welding use the axis-symmetric assumption since the predicted residual stresses tend to be upper bound. Hence, when performing a stress corrosion crack growth prediction the results tend to be conservative. However, there are many instances where full three dimensional analyses are required. Distortion predictions of large structures require full three dimensional analyses. Pipe repair analyses often require 3D solutions since the repair may only be 90-degrees of the circumference. Many other examples exist. This paper discusses circumstances where such three dimensional solutions are required. Moreover, discussions of when full moving arc solutions versus lump pass solutions suffice, and many other 3D analysis assumptions are summarized. Several examples of full three dimensional analyses are discussed. These include a partial circumferential pipe repair, an industrial weld fabrication, and ship structure weld analyses.
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She, J., P. Berg, J. Larsen, and Jacob W. Nielsen. "Operational three dimensional ocean modelling for Baltic Sea." In 2006 IEEE US/EU Baltic International Symposium on Integrated Ocean Observation Syst. for Managing Global & Regional Ecosys.Marine Resch. IEEE, 2006. http://dx.doi.org/10.1109/baltic.2006.7266168.

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Alam, M. K., C. Druma, M. Anghelescu, and B. Maruyama. "THREE DIMENSIONAL THERMO-MECHANICAL MODELLING OF CARBON FOAM." In Annals of the Assembly for International Heat Transfer Conference 13. Begell House Inc., 2006. http://dx.doi.org/10.1615/ihtc13.p5.250.

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Enache, M. C., B. M. Novaci, and I. R. Smith. "Three-dimensional modelling of helical flux-compression generators." In Proceedings of the 12th International Pulsed Power Conference. IEEE, 1999. http://dx.doi.org/10.1109/ppc.1999.825459.

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"Three Dimensional Elements for Sustainable e-Business Modelling." In International Conference on e-Business. SciTePress - Science and and Technology Publications, 2012. http://dx.doi.org/10.5220/0003994003130323.

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Lin, Weilin, Guozhen Cai, Shangbiao Wei, Shichao Gu, Haifei Zhu, and Yisheng Guan. "Three-Dimensional Truss Modelling for Biped Climbing Robots." In 2019 IEEE International Conference on Robotics and Biomimetics (ROBIO). IEEE, 2019. http://dx.doi.org/10.1109/robio49542.2019.8961404.

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Reports on the topic "Three-dimensional modelling"

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Ortiz, Michael. Three-Dimensional Modelling and Simulation of Ballistic Impact. Fort Belvoir, VA: Defense Technical Information Center, May 2001. http://dx.doi.org/10.21236/ada393714.

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Joshi, G., G. S. Dangol, B. Bajracharya, M. S. R. Murthy, and S. Wesselman. A Manual on Participatory Three-Dimensional Modelling (P3DM). Kathmandu, Nepal: International Centre for Integrated Mountain Development (ICIMOD), 2016. http://dx.doi.org/10.53055/icimod.616.

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Joshi, G., G. S. Dangol, B. Bajracharya, M. S. R. Murthy, and S. Wesselman. A Manual on Participatory Three-Dimensional Modelling (P3DM). Kathmandu, Nepal: International Centre for Integrated Mountain Development (ICIMOD), 2016. http://dx.doi.org/10.53055/icimod.616.

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Broome, J. G3d: a three dimensional gravity modelling program for IBM-compatible microcomputers. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132672.

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Eaton, D. BMOD3D: a program for three-dimensional seismic modelling using the Born approximation. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/208674.

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Ansari, S. M., E. M. Schetselaar, and J. A. Craven. Three-dimensional magnetotelluric modelling of the Lalor volcanogenic massive-sulfide deposit, Manitoba. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328003.

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Unconstrained magnetotelluric inversion commonly produces insufficient inherent resolution to image ore-system fluid pathways that were structurally thinned during post-emplacement tectonic activity. To improve the resolution in these complex environments, we synthesized the 3-D magnetotelluric (MT) response for geologically realistic models using a finite-element-based forward-modelling tool with unstructured meshes and applied it to the Lalor volcanogenic massive-sulfide deposit in the Snow Lake mining camp, Manitoba. This new tool is based on mapping interpolated or simulated resistivity values from wireline logs onto unstructured tetrahedral meshes to reflect, with the help of 3-D models obtained from lithostratigraphic and lithofacies drillhole logs, the complexity of the host-rock geological structure. The resulting stochastic model provides a more realistic representation of the heterogeneous spatial distribution of the electric resistivity values around the massive, stringer, and disseminated sulfide ore zones. Both models were combined into one seamless tetrahedral mesh of the resistivity field. To capture the complex resistivity distribution in the geophysical forward model, a finite-element code was developed. Comparative analyses of the forward models with MT data acquired at the Earth's surface show a reasonable agreement that explains the regional variations associated with the host rock geological structure and detects the local anomalies associated with the MT response of the ore zones.
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Carter, T. R., F. R. Brunton, J. K. Clark, L. Fortner, C E Logan, H. A J Russell, M. Somers, L. Sutherland, and K. Yeung. Three-dimensional geological modelling of the Paleozoic bedrock of southern Ontario: status update. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2020. http://dx.doi.org/10.4095/321080.

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Logan, C., H. A. J. Russell, and D. R. Sharpe. Regional three-dimensional stratigraphic modelling of the Oak Ridges Moraine area, southern Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2001. http://dx.doi.org/10.4095/212119.

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Eaton, J. K. Structure and modelling of the three-dimensional boundary layer on a rotating disk: Progress report. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10134351.

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de Kemp, E. A., and K. B. Sprague. New interpretive tools for three-dimensional structural geological modelling: Bézier-based curves, ribbons, and skeletons. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2001. http://dx.doi.org/10.4095/212176.

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