Relevant bibliographies by topics / Tree motion

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Tree motion'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Tree motion"

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Xing, Siyuan, and Albert C. J. Luo. "On a Global Sequential Scenario of Bifurcation Trees to Chaos in a First-Order, Periodically Excited, Time-Delayed System." International Journal of Bifurcation and Chaos 29, no. 10 (September 2019): 1950141. http://dx.doi.org/10.1142/s0218127419501414.

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In this paper, the global sequential scenario of bifurcation trees of periodic motions to chaos is studied for a first-order, time-delayed, nonlinear dynamical system with periodic excitation. The periodic motions of such a first-order time-delayed system is obtained semi-analytically, and the corresponding stability and bifurcations are determined by eigenvalue analysis. A global sequential scenario of bifurcation trees is given by [Formula: see text] where [Formula: see text] is a global bifurcation tree of an asymmetric period-[Formula: see text] motion to chaos, and [Formula: see text] is a global bifurcation tree of a symmetric period-[Formula: see text] motion to chaos. Each bifurcation tree of a specific periodic motion to chaos is presented in detail. Numerical simulations of periodic motions are performed from analytical predictions. From finite Fourier series, harmonic amplitudes and phases for periodic motions are obtained for frequency analysis. Through this study, the rich dynamics of the first-order, time-delayed, nonlinear dynamical system is presented.
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Xu, Yeyin, Zhaobo Chen, and Albert C. J. Luo. "Period-1 Motion to Chaos in a Nonlinear Flexible Rotor System." International Journal of Bifurcation and Chaos 30, no. 05 (April 2020): 2050077. http://dx.doi.org/10.1142/s0218127420500777.

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In this paper, a bifurcation tree of period-1 motion to chaos in a flexible nonlinear rotor system is presented through period-1 to period-8 motions. Stable and unstable periodic motions on the bifurcation tree in the flexible rotor system are achieved semi-analytically, and the corresponding stability and bifurcation of the periodic motions are analyzed by eigenvalue analysis. On the bifurcation tree, the appearance and vanishing of jumping phenomena of periodic motions are generated by saddle-node bifurcations, and quasi-periodic motions are induced by Neimark bifurcations. Period-doubling bifurcations of periodic motions are for developing cascaded bifurcation trees, however, the birth of new periodic motions are based on the saddle-node bifurcation. For a better understanding of periodic motions on the bifurcation tree, nonlinear harmonic amplitude characteristics of periodic motions are presented. Numerical simulations of periodic motions are performed for the verification of semi-analytical predictions. From such a study, nonlinear Jeffcott rotor possesses complex periodic motions. Such results can help one detect and control complex motions in rotor systems for industry.
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Liu, Feng, Yueting Zhuang, Fei Wu, and Yunhe Pan. "3D motion retrieval with motion index tree." Computer Vision and Image Understanding 92, no. 2-3 (November 2003): 265–84. http://dx.doi.org/10.1016/j.cviu.2003.06.001.

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Kale, Özkan, and Sinan Akkar. "A Ground-Motion Logic-Tree Scheme for Regional Seismic Hazard Studies." Earthquake Spectra 33, no. 3 (August 2017): 837–56. http://dx.doi.org/10.1193/051316eqs080m.

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We propose a methodology that can be useful to the hazard expert in building ground-motion logic trees to capture the center and range of ground-motion amplitudes. The methodology can be used to identify a logic-tree structure and weighting scheme that prevents the dominancy of a specific ground-motion model. This strategy can be useful for regional probabilistic seismic hazard since logic-trees biased by a specific ground-motion predictive model (GMPE) may cause disparities in the seismic hazard for regions represented by large number of sites with complex seismic features. The methodology first identifies a suit of candidate ground-motion prediction equations that can cover the center, body and range of estimated ground motions. The GMPE set is then used for establishing alternative logic-trees composed of different weighting schemes to identify the one(s) that would not be biased towards a particular GMPE due to its sensitivity to the weights. The proposed methodology utilizes visual and statistical tools to assess the ground motion distributions over large areas that makes it more practical for regional hazard studies.
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Jackson, Toby D., Sarab Sethi, Ebba Dellwik, Nikolas Angelou, Amanda Bunce, Tim van Emmerik, Marine Duperat, et al. "The motion of trees in the wind: a data synthesis." Biogeosciences 18, no. 13 (July 6, 2021): 4059–72. http://dx.doi.org/10.5194/bg-18-4059-2021.

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Abstract. Interactions between wind and trees control energy exchanges between the atmosphere and forest canopies. This energy exchange can lead to the widespread damage of trees, and wind is a key disturbance agent in many of the world's forests. However, most research on this topic has focused on conifer plantations, where risk management is economically important, rather than broadleaf forests, which dominate the forest carbon cycle. This study brings together tree motion time-series data to systematically evaluate the factors influencing tree responses to wind loading, including data from both broadleaf and coniferous trees in forests and open environments. We found that the two most descriptive features of tree motion were (a) the fundamental frequency, which is a measure of the speed at which a tree sways and is strongly related to tree height, and (b) the slope of the power spectrum, which is related to the efficiency of energy transfer from wind to trees. Intriguingly, the slope of the power spectrum was found to remain constant from medium to high wind speeds for all trees in this study. This suggests that, contrary to some predictions, damping or amplification mechanisms do not change dramatically at high wind speeds, and therefore wind damage risk is related, relatively simply, to wind speed. Conifers from forests were distinct from broadleaves in terms of their response to wind loading. Specifically, the fundamental frequency of forest conifers was related to their size according to the cantilever beam model (i.e. vertically distributed mass), whereas broadleaves were better approximated by the simple pendulum model (i.e. dominated by the crown). Forest conifers also had a steeper slope of the power spectrum. We interpret these finding as being strongly related to tree architecture; i.e. conifers generally have a simple shape due to their apical dominance, whereas broadleaves exhibit a much wider range of architectures with more dominant crowns.
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Long, Jie, and Michael D. Jones. "Reconstructing 3D Tree Models Using Motion Capture and Particle Flow." International Journal of Computer Games Technology 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/363160.

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Recovering tree shape from motion capture data is a first step toward efficient and accurate animation of trees in wind using motion capture data. Existing algorithms for generating models of tree branching structures for image synthesis in computer graphics are not adapted to the unique data set provided by motion capture. We present a method for tree shape reconstruction using particle flow on input data obtained from a passive optical motion capture system. Initial branch tip positions are estimated from averaged and smoothed motion capture data. Branch tips, as particles, are also generated within a bounding space defined by a stack of bounding boxes or a convex hull. The particle flow, starting at branch tips within the bounding volume under forces, creates tree branches. The forces are composed of gravity, internal force, and external force. The resulting shapes are realistic and similar to the original tree crown shape. Several tunable parameters provide control over branch shape and arrangement.
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Ao, Xuefeng, Zhongke Wu, and Mingquan Zhou. "Real Time Animation of Trees Based on BBSC in Computer Games." International Journal of Computer Games Technology 2009 (2009): 1–8. http://dx.doi.org/10.1155/2009/970617.

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That researchers in the field of computer games usually find it is difficult to simulate the motion of actual 3D model trees lies in the fact that the tree model itself has very complicated structure, and many sophisticated factors need to be considered during the simulation. Though there are some works on simulating 3D tree and its motion, few of them are used in computer games due to the high demand for real-time in computer games. In this paper, an approach of animating trees in computer games based on a novel tree model representation—Ball B-Spline Curves (BBSCs) are proposed. By taking advantage of the good features of the BBSC-based model, physical simulation of the motion of leafless trees with wind blowing becomes easier and more efficient. The method can generate realistic 3D tree animation in real-time, which meets the high requirement for real time in computer games.
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Luo, Albert C. J., and Jianzhe Huang. "Period-3 Motions to Chaos in a Softening Duffing Oscillator." International Journal of Bifurcation and Chaos 24, no. 03 (March 2014): 1430010. http://dx.doi.org/10.1142/s0218127414300109.

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In this paper, period-3 motions to chaos in the periodically forced, softening Duffing oscillator are investigated analytically. The analytical solutions for period-3 and period-6 motions are approximated through the generalized harmonic balance method. The bifurcation trees of period-3 motions to chaos are presented analytically. The symmetric and asymmetric period-3 motions are found. The symmetric to asymmetric period-3 motions experience the saddle-node bifurcation. From the Hopf bifurcation of the asymmetric period-3 motion, period-6 motions are determined analytically from the bifurcation tree of period-3 motions. Such an investigation provides a complete picture of period-3 motions to period-6 motions. With such bifurcation tree, the chaotic motions relative to period-3 motions in such a softening Duffing oscillator can be determined analytically. In a similar fashion, other bifurcation trees of period-m motions to chaos can be determined analytically.
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Merchant, Hugo, Alexandra Battaglia-Mayer, and Apostolos P. Georgopoulos. "Functional Organization of Parietal Neuronal Responses to Optic-Flow Stimuli." Journal of Neurophysiology 90, no. 2 (August 2003): 675–82. http://dx.doi.org/10.1152/jn.00331.2003.

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We analyzed the dissimilarity matrix of neuronal responses to moving visual stimuli using tree clustering and multidimensional scaling (MDS). Single-cell activity was recorded in area 7a while random dots moving coherently in eight different kinds of motion (right-, left-, up-, and downward, clockwise, counterclockwise, expansion, contraction) were presented to behaving monkeys with eyes fixated. Tree clustering analyses showed that the {rightward, leftward}, {upward, downward}, and {clockwise, counterclockwise]} motions were clustered in three separate branches (i.e., horizontal, vertical, and rotatory motion, respectively). In contrast, expansion was in a lone branch, whereas contraction was also separate but within a larger cluster. The distances among these clusters were then subjected to an MDS analysis to identify the dimensions underlying the tree clustering observed. This analysis revealed two major factors in operation. The first factor separated expansion from all other stimulus motions, which seems to reflect the prominence of expansion during the common activity of locomotion. In contrast, the second factor separated planar motions from motion in depth, which suggests that the latter may hold a special place in visual motion processing.
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Auletta, Vincenzo, and Pino Persiano. "Optimal Pebble Motion on a Tree." Information and Computation 165, no. 1 (February 2001): 42–68. http://dx.doi.org/10.1006/inco.2000.3005.

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Dissertations / Theses on the topic "Tree motion"

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Kowalska, Jolanta. "Tree of life dance : cultural universals in motion /." Warsaw : Institute of the history of material culture, Polish academy of sciences, 1991. http://catalogue.bnf.fr/ark:/12148/cb374876094.

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Mathew, Reji Kuruvilla Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Quad-tree motion models for scalable video coding applications." Awarded by:University of New South Wales. Electrical Engineering & Telecommunications, 2009. http://handle.unsw.edu.au/1959.4/44600.

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Modeling the motion that occurs between frames of a video sequence is a key component of video coding applications. Typically it is not possible to represent the motion between frames by a single model and therefore a quad-tree structure is employed where smaller, variable size regions or blocks are allowed to take on separate motion models. Quad-tree structures however suffer from two fundamental forms of redundancy. First, quad-trees exhibit structural redundancy due to their inability to exploit the dependence between neighboring leaf nodes with different parents. The second form of redundancy is due to the quad-tree structure itself being limited to capture only horizontal and vertical edge discontinuities at dyadically related locations; this means that general discontinuities in the motion field, such as those caused by boundaries of moving objects, become difficult and expensive to model. In our work, we address the issue of structural redundancy by introducing leaf merging. We describe how the intuitively appealing leaf merging step can be incorporated into quad-tree motion representations for a range motion modeling contexts. In particular, the impact of rate-distortion (R-D) optimized merging for two motion coding schemes, these being spatially predictive coding, as used by H.264, and hierarchical coding, are considered. Our experimental results demonstrate that the merging step can provide significant gains in R-D performance for both the hierarchical and spatial prediction schemes. Hierarchical coding has the advantage that it offers scalable access to the motion information; however due to the redundancy it introduces hierarchical coding has not been traditionally pursued. Our work shows that much of this redundancy can be mitigated with the introduction of merging. To enable scalable decoding, we employ a merging scheme which ensures that the dependencies introduced via merging can be hierarchically decoded. Theoretical investigations confirm the inherent advantages of leaf merging for quad-tree motion models. To enable quad-tree structures to better model motion discontinuity boundaries, we introduce geometry information to the quad-tree representation. We choose to model motion and geometry using separate quad-tree structures; thereby enabling each attribute to be refined separately. We extend the leaf merging paradigm to incorporate the dual tree structure allowing regions to be formed that have both motion and geometry attributes, subject to rate-distortion optimization considerations. We employ hierarchical coding for the motion and geometry information and ensure that the merging process retains the property of resolution scalability. Experimental results show that the R-D performance of the merged dual tree representation, is significantly better than conventional motion modeling schemes. Theoretical investigations show that if both motion and boundary geometry can be perfectly modeled, then the merged dual tree representation is able to achieve optimal R-D performance. We explore resolution scalability of merged quad-tree representations. We consider a modified Lagrangian cost function that takes into account the possibility of scalable decoding. Experimental results reveal that the new cost objective can considerably improve scalability performance without significant loss in overall efficiency and with competitive performance at all resolutions.
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Fredriksson, Mattias. "Tree structured neural network hierarchy for synthesizing throwing motion." Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20812.

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Realism in animation sequences requires movements to be adapted to changing environments within the virtual world. To enhance visual experiences from animated characters, research is being focused on recreating realistic character movement adapted to surrounding environment within the character's world. Existing methods as applied to the problem of controlling character animations are often poorly suited to the problem as they focus on modifying and adapting static sequences, favoring responsiveness and reaching the motion objective rather than realism in characters movements.   Algorithms for synthesizing motion sequences can then bridge the gap between motion quality and responsiveness, and recent methods have shown to open the possibility to recreate specific motions and movement patterns. Effectiveness of proposed methods to synthesize motion can however be questioned, particularly due to the sparsity and quality of evaluations between methods. An issue which is further complicated by variations in learning tasks and motion data used to train models.   Rather than directly propose a new synthesis method, focus is put on refuting existing methods by applying them to the task of synthesizing objective-oriented motion involving the action of throwing a ball. To achieve this goal, two experiments are designed. The first experiment evaluates if a phase-functioned neural network (PFNN) model based on absolute joint configurations can generate objective oriented motion.   To achieve this objective, a separate approach utilizing a hierarchy of phase-function networks is designed and implemented. By comparing application of the two methods on the learning task, the proposed hierarchy model showed significant improvement regarding the ability to fit generated motion to intended end effector trajectories.   To be able to refute the idea of using dense feed-forward neural networks, a second experiment is performed comparing PFNN and feed-forward based network hierarchies. Outcome from the experiment show significant differences in favor for the hierarchy model utilizing phase-function networks.   To facilitate experimentation, objective oriented motion data for training network models are obtained by researching and implementing methods for processing optical motion capture data over repeated practices of over-arm ball throws. Contribution is then threefold: creation of a dataset containing motion sequences of ball throwing actions, evaluation of PFNN on the task of learning sequences of objective oriented motion, and definition of a hierarchy based neural network model applicable to the motion synthesis task.
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Miller, Jordan Mitchell. "Estimation of individual tree metrics using structure-from-motion photogrammetry." Thesis, University of Canterbury. Geography, 2015. http://hdl.handle.net/10092/11035.

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The deficiencies of traditional dendrometry mean improvements in methods of tree mensuration are necessary in order to obtain accurate tree metrics for applications such as resource appraisal, and biophysical and ecological modelling. This thesis tests the potential of SfM-MVS (Structure-fromMotion with Multi-View Stereo-photogrammetry) using the software package PhotoScan Professional, for accurately determining linear (2D) and volumetric (3D) tree metrics. SfM is a remote sensing technique, in which the 3D position of objects is calculated from a series of photographs, resulting in a 3D point cloud model. Unlike other photogrammetric techniques, SfM requires no control points or camera calibration. The MVS component of model reconstruction generates a mesh surface based on the structure of the SfM point cloud. The study was divided into two research components, for which two different groups of study trees were used: 1) 30 small, potted ‘nursery’ trees (mean height 2.98 m), for which exact measurements could be made and field settings could be modified, and; 2) 35 mature ‘landscape’ trees (mean height 8.6 m) located in parks and reserves in urban areas around the South Island, New Zealand, for which field settings could not be modified. The first component of research tested the ability of SfM-MVS to reconstruct spatially-accurate 3D models from which 2D (height, crown spread, crown depth, stem diameter) and 3D (volume) tree metrics could be estimated. Each of the 30 nursery trees was photographed and measured with traditional dendrometry to obtain ground truth values with which to evaluate against SfM-MVS estimates. The trees were destructively sampled by way of xylometry, in order to obtain true volume values. The RMSE for SfM-MVS estimates of linear tree metrics ranged between 2.6% and 20.7%, and between 12.3% and 47.5% for volumetric tree metrics. Tree stems were reconstructed very well though slender stems and branches were reconstructed poorly. The second component of research tested the ability of SfM-MVS to reconstruct spatially-accurate 3D models from which height and DBH could be estimated. Each of the 35 landscape trees, which varied in height and species, were photographed, and ground truth values were obtained to evaluate against SfM-MVS estimates. As well as this, each photoset was thinned to find the minimum number of images required to achieve total image alignment in PhotoScan and produce an SfM point cloud (minimum photoset), from which 2D metrics could be estimated. The height and DBH were estimated by SfM-MVS from the complete photosets with RMSE of 6.2% and 5.6% respectively. The height and DBH were estimated from the minimum photosets with RMSE of 9.3% and 7.4% respectively. The minimum number of images required to achieve total alignment was between 20 and 50. There does not appear to be a correlation between the minimum number of images required for alignment and the error in the estimates of height or DBH (R2 =0.001 and 0.09 respectively). Tree height does not appear to affect the minimum number of images required for image alignment (R 2 =0.08).
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Selino, Anthony Frank. "Coherent Turbulence: Synthesizing tree motion in the wind using CFD and noise." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/3015.

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Animating trees in wind has long been a problem in computer graphics. Progress on this problem is important for both visual effects and biomechanics and may inform future work on two-way coupling between turbulent flows and deformable objects. Synthetic turbulence added to a coarse fluid simulation has been used to produce convincing animations of turbulent flows, but only considers one-way coupling between fluid and solid. We produce accurate animations of tree motion by creating a two-way coupling between synthetic turbulence and semipermeable proxy geometry. The resulting animations exhibit global wind sheltering effects and branch tips have motion paths which match paths collected from branch tips using motion capture.
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Sari, Huseyin. "Motion Estimation Using Complex Discrete Wavelet Transform." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1223205/index.pdf.

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The estimation of optical flow has become a vital research field in image sequence analysis especially in past two decades, which found applications in many fields such as stereo optics, video compression, robotics and computer vision. In this thesis, the complex wavelet based algorithm for the estimation of optical flow developed by Magarey and Kingsbury is implemented and investigated. The algorithm is based on a complex version of the discrete wavelet transform (CDWT), which analyzes an image through blocks of filtering with a set of Gabor-like kernels with different scales and orientations. The output is a hierarchy of scaled and subsampled orientation-tuned subimages. The motion estimation algorithm is based on the relationship between translations in image domain and phase shifts in CDWT domain, which is satisfied by the shiftability and interpolability property of CDWT. Optical flow is estimated by using this relationship at each scale, in a coarse-to-fine (hierarchical) manner, where information from finer scales is used to refine the estimates from coarser scales. The performance of the motion estimation algorithm is investigated with various image sequences as input and the effects of the options in the algorithm like curvature-correction, interpolation kernel between levels and some parameter values like confidence threshold iv maximum number of CDWT levels and minimum finest level of detail are also experimented and discussed. The test results show that the method is superior to other well-known algorithms in estimation accuracy, especially under high illuminance variations and additive noise.
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Chang, Ming. "Example-Based Fluid Simulation." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20310.

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We present a novel method for example-based simulation of fluid flow. We reconstruct fluid animation from physically based fluid simulation examples. Our framework shows how to decompose a given series of fluid motion example data into small units and then recompose them. We capture the properties of local fluid behavior by dicing the fluid motion example data into sequences of fragments, which have smaller volume and shorter length. We build a database out of these fragments, and propose a matching strategy to generate new fluid animation. To achieve highly efficient database query, we project our fragments onto lower dimensional subspace using Principal Component Analysis (PCA) approach, and construct our data structure as a kd-tree by treating each fragment as a point in this subspace. Our method has been implemented in synthesizing both two-dimensional (2D) and three-dimensional (3D) fluid’s velocity fields.
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Mukora, Wanjiku Beatrice. "Disrupting binary divisions : representation of identity in Saikati and Battle of the sacred tree." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0016/MQ55002.pdf.

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Aumann, Craig Alvan. "Development, parameterization and numerical solution of an unsaturated flow model for water in the sapwood of a Douglas-fir tree /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/6374.

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Fredriksson, Tomas, and Rickard Svensson. "Analysis of machine learning for human motion pattern recognition on embedded devices." Thesis, KTH, Mekatronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246087.

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With an increased amount of connected devices and the recent surge of artificial intelligence, the two technologies need more attention to fully bloom as a useful tool for creating new and exciting products. As machine learning traditionally is implemented on computers and online servers this thesis explores the possibility to extend machine learning to an embedded environment. This evaluation of existing machine learning in embedded systems with limited processing capa-bilities has been carried out in the specific context of an application involving classification of basic human movements. Previous research and implementations indicate that it is possible with some limitations, this thesis aims to answer which hardware limitation is affecting clas-sification and what classification accuracy the system can reach on an embedded device. The tests included human motion data from an existing dataset and included four different machine learning algorithms on three devices. Support Vector Machine (SVM) are found to be performing best com-pared to CART, Random Forest and AdaBoost. It reached a classification accuracy of 84,69% between six different included motions with a clas-sification time of 16,88 ms per classification on a Cortex M4 processor. This is the same classification accuracy as the one obtained on the host computer with more computational capabilities. Other hardware and machine learning algorithm combinations had a slight decrease in clas-sification accuracy and an increase in classification time. Conclusions could be drawn that memory on the embedded device affect which al-gorithms could be run and the complexity of data that can be extracted in form of features. Processing speed is mostly affecting classification time. Additionally the performance of the machine learning system is connected to the type of data that is to be observed, which means that the performance of different setups differ depending on the use case.
Antalet uppkopplade enheter ökar och det senaste uppsvinget av ar-tificiell intelligens driver forskningen framåt till att kombinera de två teknologierna för att både förbättra existerande produkter och utveckla nya. Maskininlärning är traditionellt sett implementerat på kraftfulla system så därför undersöker den här masteruppsatsen potentialen i att utvidga maskininlärning till att köras på inbyggda system. Den här undersökningen av existerande maskinlärningsalgoritmer, implemen-terade på begränsad hårdvara, har utförts med fokus på att klassificera grundläggande mänskliga rörelser. Tidigare forskning och implemen-tation visar på att det ska vara möjligt med vissa begränsningar. Den här uppsatsen vill svara på vilken hårvarubegränsning som påverkar klassificering mest samt vilken klassificeringsgrad systemet kan nå på den begränsande hårdvaran. Testerna inkluderade mänsklig rörelsedata från ett existerande dataset och inkluderade fyra olika maskininlärningsalgoritmer på tre olika system. SVM presterade bäst i jämförelse med CART, Random Forest och AdaBoost. Den nådde en klassifikationsgrad på 84,69% på de sex inkluderade rörelsetyperna med en klassifikationstid på 16,88 ms per klassificering på en Cortex M processor. Detta är samma klassifikations-grad som en vanlig persondator når med betydligt mer beräknings-resurserresurser. Andra hårdvaru- och algoritm-kombinationer visar en liten minskning i klassificeringsgrad och ökning i klassificeringstid. Slutsatser kan dras att minnet på det inbyggda systemet påverkar vilka algoritmer som kunde köras samt komplexiteten i datan som kunde extraheras i form av attribut (features). Processeringshastighet påverkar mest klassificeringstid. Slutligen är prestandan för maskininlärningsy-stemet bunden till typen av data som ska klassificeras, vilket betyder att olika uppsättningar av algoritmer och hårdvara påverkar prestandan olika beroende på användningsområde.
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Books on the topic "Tree motion"

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A tree is a tree. Hollywood, CA: S. French, 1989.

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Lam, Tin Lun. Tree Climbing Robot: Design, Kinematics and Motion Planning. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.

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Kowalska, Jolanta. Tree of life dance: Cultural universals in motion. Warsaw: Institute of the History of Material Culture, Polish Academy of Sciences, 1991.

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ill, Pedersen Janet, ed. Thea's tree. New York: Dutton Children's Books, 2008.

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Shining glory: Theological reflections on Terrence Malick's The tree of life. Eugene, Oregon: Cascade Books, 2013.

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Warshawski, Morrie. Shaking the money tree: How to get grants and donations for film and video projects. Studio City, CA: M. Wiese Productions, 1994.

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Shaking the money tree: How to get grants and donations for film and video projects. 2nd ed. Studio City, CA: Michael Wiese Productions, 2003.

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Shaking the money tree: How to get grants and donations for film and video projects. Studio City, CA: M. Wiese Productions, 1994.

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Warshawski, Morrie. Shaking the money tree: The art of getting grants and donations for film and video projects. 3rd ed. Studio City, CA: Michael Wiese Productions, 2010.

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Shaking the money tree: The art of getting grants and donations for film and video projects. 3rd ed. Studio City, CA: Michael Wiese Productions, 2010.

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Book chapters on the topic "Tree motion"

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Long, Jie, Cory Reimschussel, Ontario Britton, Anthony Hall, and Michael Jones. "Motion Capture for a Natural Tree in the Wind." In Motion in Games, 158–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16958-8_16.

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Vonásek, Vojtěch, Jan Faigl, Tomáš Krajník, and Libor Přeučil. "RRT-path – A Guided Rapidly Exploring Random Tree." In Robot Motion and Control 2009, 307–16. London: Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-985-5_28.

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Zhang, Wei, Haibin Ling, Simone Prummer, Kevin Shaohua Zhou, Martin Ostermeier, and Dorin Comaniciu. "Coronary Tree Extraction Using Motion Layer Separation." In Medical Image Computing and Computer-Assisted Intervention – MICCAI 2009, 116–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04268-3_15.

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Yu, Wei, Hongli Yan, Junqi Guo, and Rongfang Bie. "Patient’s Motion Recognition Based on SOM-Decision Tree." In Wireless Algorithms, Systems, and Applications, 255–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39701-1_22.

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Palmer, M., J. Rosenzweig, and W. Schuler. "Capturing Motion Verb Generalizations in Synchronous Tree Adjoining Grammars." In Predicative Forms in Natural Language and in Lexical Knowledge Bases, 229–56. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-017-2746-4_8.

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Deyong, Wang. "Virtual Reality of Tree Motion Based on Vega Prime." In Communications in Computer and Information Science, 454–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21411-0_74.

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Xie, Chunzhi, Jiancheng Lv, Bijue Jia, and Lei Xia. "Tree Factored Conditional Restricted Boltzmann Machines for Mixed Motion Style." In Neural Information Processing, 484–92. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70139-4_49.

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Xiang, Jian, and HongLi Zhu. "Motion Retrieval Based on Temporal-Spatial Features by Decision Tree." In Digital Human Modeling, 224–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-73321-8_27.

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Erikson, Mats. "Structure-Preserving Segmentation of Individual Tree Crowns by Brownian Motion." In Image Analysis, 283–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-45103-x_39.

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Hu, Shaojun, Peng He, and Dongjian He. "Motion Capture and Estimation of Dynamic Properties for Realistic Tree Animation." In Next Generation Computer Animation Techniques, 18–34. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69487-0_2.

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Conference papers on the topic "Tree motion"

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Guillon, Thomas, Yves Dumont, and Thierry Fourcaud. "Simulation of tree branch motion." In 2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA). IEEE, 2012. http://dx.doi.org/10.1109/pma.2012.6524822.

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Long, Jie, Cory Reimschussel, Ontario Britton, and Michael Jones. "Motion capture for natural tree animation." In SIGGRAPH 2009: Talks. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1597990.1598067.

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Long, Jie, and Michael D. Jones. "3D tree modeling using motion capture." In 2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA). IEEE, 2012. http://dx.doi.org/10.1109/pma.2012.6524841.

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Schuster, Guido M., and Aggelos K. Katsaggelos. "Optimal quad-tree-based motion estimator." In Advanced Imaging and Network Technologies, edited by Naohisa Ohta. SPIE, 1996. http://dx.doi.org/10.1117/12.251317.

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Ma, Ji, Na Zhang, Xiaopeng Fan, Ruiqin Xiong, and Debin Zhao. "Quad-tree based inter-view motion prediction." In 2015 Visual Communications and Image Processing (VCIP). IEEE, 2015. http://dx.doi.org/10.1109/vcip.2015.7457861.

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Argyriou, V., and T. Vlachos. "Motion estimation using quad-tree phase correlation." In 2005 International Conference on Image Processing. IEEE, 2005. http://dx.doi.org/10.1109/icip.2005.1529942.

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Mathew, Reji, and David S. Taubman. "Motion modeling with separate quad-tree structures for geometry and motion." In 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP). IEEE, 2008. http://dx.doi.org/10.1109/mmsp.2008.4665106.

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Tan, Jaime Hui Choo, Yih Jeng Teng, and Fathieah Kiprawi. "Vortex Induced Motion of a Dry Tree Semisubmersible." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61653.

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The main challenge in the hydrodynamic design of a dry tree semisubmersible is in limiting its motion responses particularly heave motions to enable the use of riser tensioners. Deep draft semisubmersibles have low heave motions but are more susceptible to vortex induced motions (VIM) due to high slenderness ratios of the columns. A novel in-house developed semisubmersible design named the Heave and VIM Suppressed (HVS) semisubmersible has been designed to possess low VIM and low heave responses required for dry tree applications. A case study of the feasibility of a dry tree HVS semisubmersible in South East Asian environment has been published separately [1]. This paper presents the VIM performance of the same hull, estimated using model testing and Computational Fluid Dynamics (CFD) analysis. From the model tests, VIM suppression is observed in the HVS semisubmersible due to the presence of the column steps. CFD simulations of the model tests show results comparable to the measured data for the HVS semisubmersible. Additional CFD analysis is performed to account for the external damping effect of the mooring lines and risers on the VIM performance of the HVS semisubmersible. This paper together with the earlier publication [1] shows the robustness of the HVS semisubmersible design concept in addressing both the heave and VIM issues in semisubmersibles for dry tree applications.
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Kyoung, Johyun, Jim O'Sullivan, Lambrakos Kostas, Jang Whan Kim, and James Ermon. "Low Motion Semisubmersible Hull for Dry Tree Application." In Offshore Technology Conference. Offshore Technology Conference, 2014. http://dx.doi.org/10.4043/25388-ms.

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Druet, A. "Binary-tree recursive motion estimation for video coding." In 6th International Conference on Image Processing and its Applications. IEE, 1997. http://dx.doi.org/10.1049/cp:19970852.

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Reports on the topic "Tree motion"

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Maydykovskiy, Igor, and Petra Užpelkis. The Concept of space-time quanta in future technologies. Intellectual Archive, December 2020. http://dx.doi.org/10.32370/iaj.2464.

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The article discusses the possibility of using the technological advantages that appear in connection with the discovery of the physical essence of Time and new interpretation of the structure of space in the form of space-time quanta. One of the problems that can be successfully solved on the basis of the new physical model is the problem of establishing the true nature of gravity. The solution to this problem is directly related to the implementation of the idea of unsupported motion based on the interaction in a certain way of the created asymmetric interference structure of longitudinal waves with the natural structure of spatial frequencies.
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Auguste, Sebastián, Jordi Prat, and Gisele Braun. Brecha de género en el acceso al financiamiento en Centroamérica y República Dominicana. Inter-American Development Bank, March 2021. http://dx.doi.org/10.18235/0003151.

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La evidencia empírica internacional muestra que las mujeres tienen menos acceso al financiamiento, tanto al crédito personal como al crédito empresario (según el género de quién lidera la empresa). Esta brecha de género, que se debe a factores de oferta y de demanda, preocupa, tanto desde el punto de vista de equidad o igualdad de oportunidades, como de la eficiencia, ya que en una economía de mercado el acceso al financiamiento es clave para la asignación eficiente de los recursos, y cualquier imperfección en su funcionamiento se puede traducir en menos crecimiento económico. En este trabajo se analiza la brecha de género con tres bases de datos distintas, Global Findex, una encuesta a nivel de individuos, SME Finance Forum, datos agregados estimados, y Enterprise Survey, una encuesta a nivel empresarial que informa el género del gerente general. Se destaca que, en ningún caso, ni a nivel personal ni a nivel empresarial, ha sido posible eliminar las brechas incluyendo factores observables. Por lo tanto, las mujeres en la región están más desaventajadas y esto es un motivo de preocupación, ya que incide en la productividad de la economía, la fertilidad y la tasa de acumulación del capital humano, tres dimensiones donde los países estudiados muestran déficit.
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Osejo, Alejandra, ed. Documento de análisis de modelos de gobernanza comunitaria y su impacto en el ordenamiento territorial y en la gestión de la biodiversidad. Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, December 2018. http://dx.doi.org/10.21068/cssbgobernanza2018.

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La población rural, sus diversos modos de vida y las organizaciones que representan sus intereses tienen un amplio conocimiento local de la biodiversidad. Además, al habitar los territorios sus decisiones tienen una considerable incidencia en la toma de decisiones en los territorios rurales a escala local. Por este motivo es posible afirmar que estos actores son relevantes para la gestión sostenible de los territorios rurales. Se analizaron tres escenarios donde la gobernanza comunitaria tienen un rol fundamental en el ordenamiento territorial de la biodiversidad, el cual es considerado como un espacio de negociación donde prima la participación de diferentes actores. Con respecto a las estrategias complementarias de conservación, se analizaron 45 casos en los cuales se encontró un papel activo de las comunidades con una incidencia importante en la conservación de la biodiversidad. Con relación a las ZRC, se identificaron 64 procesos en diferentes estados que tienen grandes potencialidades para contribuir al ordenamiento territorial, siempre que el proceso de planificación incluya lineamientos ambientales. En áreas de páramos existen tensiones y conflictos entre autoridades ambientales y comunidades, siendo el principal reto garantizar su participación activa en la toma de decisiones.
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Botero Mariaca, Paola María, Natalia Vélez Trujillo, Claudia Cecilia Restrepo Serna, and Libbe Mariaca Cartagena. Manual de ortodoncia interceptiva: teoría y práctica. Ediciones Universidad Cooperativa de Colombia, November 2020. http://dx.doi.org/10.16925/gcgp.28.

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El proceso de transición dental para prevenir o interceptar las maloclusiones, es decir, el desarrollo de la dentición humana, se demora 12 años, por lo que muchos factores externos influyen en él. El grado de desarmonía oclusal que resulta luego del desarrollo es determinado por los cambios compensatorios que suceden con el crecimiento; las interferencias en el desarrollo de oclusión pueden llevar a una maloclusión. En la literatura se contemplan tres términos que importa diferenciar: ortodoncia preventiva, ortodoncia interceptiva y ortodoncia correctiva. La primera busca prevenir las interferencias potenciales que se presentan en el desarrollo de la oclusión para evitar que el problema se desarrolle, mientras que la ortodoncia interceptiva tiene como finalidad la eliminación de interferencias existentes durante el desarrollo de la oclusión. Muchas veces es difícil distinguir entre estos términos debido a que no siempre es posible discriminar un problema potencial de uno existente, motivo por el que se consideran ambos términos en conjunto. Entre los beneficios del tratamiento interceptivo se encuentran una mayor habilidad para modificar el crecimiento, el mejoramiento de la autoestima del paciente, la satisfacción de los padres, resultados óptimos y más estables, y una terapia posterior más corta. Los objetivos de la terapia son lograr un estado de normalidad lo más tempranamente posible para mejorar el crecimiento y desarrollo del paciente, obtener cambios esqueléticos, proveer la oportunidad de un cambio funcional, eliminar los factores externos y los hábitos dañinos, y tomar ventaja de las fuerzas oclusales del desarrollo para su corrección.
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Sjölander, Jens, and Pål Brunnström. Idéburen sektorssamverkan med Malmö universitet. Malmö University, 2021. http://dx.doi.org/10.24834/isbn.9789178771929.

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Den här rapporten är en delrapport inom ramen för det Vinnovafinansierade projektet Strategiska partnerskap för effektiv och transparent samverkan (Spets) och belyser Malmö universitets samverkan med organisationer inom den idéburna sektorn. Rapporten bygger på en intervjustudie med tio idéburna organisationer, och speglar samverkan med Malmö universitet ur deras perspektiv: vilken samverkan som bedrivs, vad den ger organisationerna, utmaningar och hinder samt möjlighet för utveckling av samverkan, till exempel genom ett strategiskt partnerskapsavtal.Rapporten visar att det på Malmö universitet sker en hel del samverkan både kopplat till forskning, utbildning och nyttiggörande och att denna samverkan när den sker i relation till idéburen sektor främst är kopplad till tre av universitetets fakulteter – Fakulteten Kultur och samhälle, Fakulteten Hälsa och samhälle samt Fakulteten Lärande och samhälle. De intervjuade organisationernas motiv för samverkan med universitetet varierar, och undersökningen indikerar att organisationerna ser samverkan som ett sätt att fylla behov av kunskap och kompetensförsörjning, att genom vänlig kritik stimulera till nytänkande, samt att ge organisationerna ökad legitimitet i deras arbete för samhällsförändring. Undersökningen visar att det finns behov av ökad systematik i samverkan och att mer skulle kunna göras för att stärka samverkan kring forskning och utbildning. De intervjuade organisationerna lyfter behovet av mer forskning om och tillsammans med den idéburna sektorns organisationer och behovet av mer samverkan kopplat till studenters uppsatser och praktik. Här finns en möjlighet att möta organisationernas behov av kunskap, kompetens och framtida personal. Det finns även ett behov av fler arenor för möten, gärna regelbundet återkommande, mellan universitetet och den idéburen sektor, och organisationerna efterlyser även generellt ökade kunskaper om den idéburna sektorns särart, förutsättningar och behov, inom akademin såväl som i samhället i stort. Undersökningen belyser även behovet av utökat stöd och finansiering för forskare som samverkar med idéburen sektor, då finansiering av samverkan är ett särskilt problem.
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Vargas-Herrera, Hernando, Pamela Andrea Cardozo-Ortiz, Clara Lía Machado-Franco, Carlos Alberto Cadena-Silva, Freddy Hernán Cepeda-López, Aura María Ciceri-Lozano, Carlos Eduardo León-Rincón, et al. Reporte de Sistemas de Pago - Junio de 2021. Banco de la República de Colombia, July 2021. http://dx.doi.org/10.32468/rept-sist-pag.2021.

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El Banco de la República, con el Reporte de Sistemas de Pago, entrega un panorama completo de la infraestructura financiera local, siendo este un producto importante de la labor de seguimiento a dicha infraestructura. Las cifras contenidas en este reporte corresponden al año 2020, período de pandemia durante el cual las medidas de confinamiento para aliviar la tensión sobre el sistema de salud generaron para Colombia, al igual que en la mayoría de los países, una fuerte reducción de la actividad económica y el consumo. Desde el comienzo de la pandemia, la Junta Directiva del Banco de la República adoptó las decisiones necesarias para otorgar al mercado amplia liquidez en pesos y dólares, garantizar la estabilidad de los mercados, proteger el sistema de pagos y preservar la oferta de crédito. El pronunciado crecimiento de los agregados monetarios reflejó la mayor preferencia por liquidez, la cual fue atendida oportunamente por el Banco de la República. Las decisiones adoptadas se realizaron mediante diferentes operaciones, las cuales fueron compensadas y liquidadas en la infraestructura financiera. Después de la introducción, la segunda sección del presente reporte de pagos analiza la evolución y el desempeño de las diferentes infraestructuras financieras. Se destaca que el sistema de pagos de alto valor CUD registró en 2020 un mayor dinamismo que el año anterior, principalmente por el aumento de los depósitos remunerados que en promedio diario realizó la Dirección General de Crédito Público y del Tesoro Nacional (DGCPTN) con el Banco de República, así como una mayor actividad del mercado de simultáneas de deuda pública. Consecuentemente con el crecimiento de la actividad en el CUD, el Depósito Central de Valores (DCV) registró una mayor actividad por el aumento del mercado monetario de deuda pública y por las colocaciones por parte del Gobierno Nacional en el mercado primario. El valor de las operaciones compensadas y liquidadas por intermedio de la Cámara de Riesgo Central de Contraparte (CRCC) continúa creciendo, jalonado principalmente por los contratos non delivery forward (NDF) peso/dólar. Con respecto a la CRCC, es oportuno mencionar que a partir de finales del año pasado esta cámara se encarga de administrar los riesgos y de compensar y liquidar las operaciones del mercado de contado peso/dólar, debido a la fusión con la Cámara de Compensación de Divisas de Colombia (CCDC). Así mismo, a partir del último trimestre del año 2020 la CRCC se encarga de compensar y liquidar el mercado de renta variable, labor que venía desempeñando la Bolsa de Valores de Colombia (BVC). En la sección tres se entrega una visión integral de los pagos en el mercado de bienes y servicios, es decir, de las transacciones efectuadas en el circuito de personas naturales y empresas no financieras. Durante la pandemia las transferencias electrónicas inter e intrabancarias, que en su mayoría son originadas por empresas, registraron un incremento tanto en número como en valor de operaciones frente a 2019. Por su parte, los pagos con tarjetas débito y crédito originados principalmente por personas naturales mostraron un comportamiento decreciente con respecto a 2019. Los pagos realizados con cheques siguen disminuyendo, presentando una tendencia a la baja muy pronunciada en el último año. Como complemento a la información sobre transferencias electrónicas, el reporte incluye en esta sección un sombreado sobre la caracterización de la población con cuenta de ahorro y corriente, empleando los datos de la encuesta del Banco de la República sobre percepción de uso de los instrumentos de pago en 2019. Se incluye también un recuadro sobre la evolución transaccional de una billetera móvil provista por una sociedad especializada en depósitos y pagos electrónicos (Sedpe), mostrando que desde su creación a finales del año 2017 ha incremento en el número de usuarios y el valor de las transacciones, con especial velocidad durante la pandemia. Adicionalmente, se presenta un diagnóstico sobre los efectos de la pandemia en los patrones de pago de la población, fundamentado en datos sobre el uso del efectivo en circulación, sobre los pagos con instrumentos electrónicos, y sobre el consumo y la confianza del consumidor. Se concluye que el desplome en el índice de confianza del consumidor y la caída en el consumo privado dieron lugar a cambios en los patrones de pago de las personas. Las compras con tarjetas de crédito y débito disminuyeron, mientras que los pagos por bienes y servicios mediante transferencia electrónica aumentaron. Estos resultados, junto con el considerable aumento del efectivo en circulación, podrían proveer indicios a favor de un posible atesoramiento del papel moneda con motivo precaución por parte de las personas y de un mayor uso del efectivo como instrumento de pago. Se incluye, además, un recuadro que presenta los principales cambios que se introdujeron en la regulación del sistema de pagos de bajo valor en el país mediante la expedición del Decreto 1692 de diciembre de 2020. La cuarta sección se refiere a las importantes innovaciones y cambios tecnológicos que se han observado en el sistema de pagos al por menor. Se destacan cuatro temas en esta línea. El primero se constituye en un punto clave para la construcción de la infraestructura financiera de pagos inmediatos. Consiste en el diseño e implementación de los llamados esquemas superpuestos, los cuales son un desarrollo tecnológico que permite una comunicación abierta entre los diferentes agentes de la cadena de pagos, logrando una alta interoperabilidad entre diferentes proveedores de servicios de pago. El segundo tema explora los avances en el debate internacional sobre la emisión de moneda digital por parte de los bancos centrales (CBDC por su sigla en inglés), con el fin de entender su posible impacto en el sistema de pagos de bajo valor y en el uso del efectivo. El tercer tema está relacionado con nuevas formas de iniciación de pagos, tales como los códigos QR, la biometría o la tecnología de comunicación de campos cercanos (NCF por su sigla en inglés). Estos cambios, aparentemente pequeños, pueden tener efectos importantes en la experiencia del usuario con el sistema de pagos de bajo valor. El cuarto tema, finalmente, es el crecimiento de los pagos vinculados con la telefonía móvil y el internet. El reporte finaliza en la sección cinco con una reseña de dos trabajos de investigación aplicada realizados en el Banco de la República en el año 2020. El primero analiza el nivel patrimonial de la CRCC, reconociendo el rol relevante que esta infraestructura ha adquirido en la compensación y liquidación de varios mercados financieros en el país. Se exploran los requerimientos de capital para las entidades de contrapartida central establecidos en algunas jurisdicciones, se identifican los riesgos que se busca cubrir desde la perspectiva del servicio que este tipo de entidades ofrece al mercado y aquellos asociados a su actividad corporativa. Se analizan los niveles patrimoniales de la CRCC a partir de lo observado en la regulación de la Unión Europea y se concluye que la CRCC cuenta con un esquema de anillos de seguridad muy similar al observado en la experiencia internacional y que su nivel patrimonial es superior al exigido por la regulación colombiana, siendo suficiente para cubrir otros riesgos. El segundo trabajo de investigación identifica y cuantifica las fuentes que utilizan las entidades participantes en el CUD para cumplir con sus obligaciones diarias contraídas en el mercado financiero local, y con su uso como herramienta de monitoreo de la liquidez intradía en condiciones normales. Leonardo Villar Gómez Gerente General
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