1,291 research outputs found
Ecodevelopment, Gender, and Empowerment: Perspectives from Indiaâs Protected Area Communities
Book abstract:
Feminism has re-shaped the way we think about equality, power relations and social change. Recent feminist scholarship has provided new theoretical frameworks, methodologies and empirical analyses of how gender and feminism are situated within the development process.Global Perspectives on Gender and Space: Engaging Feminism and Development draws upon this framework to explore the effects of globalization on development in diverse geographical contexts. It explores how womenâs and menâs lives are gendered in specific spaces as well as across multiple landscapes
Optical flow estimation via steered-L1 norm
Global variational methods for estimating optical flow are among the best performing methods due to the subpixel accuracy and the âfill-inâ effect they provide. The fill-in effect allows optical flow displacements to be estimated even in low and untextured areas of the image. The estimation of such displacements are induced by the smoothness term. The L1 norm provides a robust regularisation term for the optical flow energy function with a very good performance for edge-preserving. However this norm suffers from several issues, among these is the isotropic nature of this norm which reduces the fill-in effect and eventually the accuracy of estimation in areas near motion boundaries. In this paper we propose an enhancement to the L1 norm that improves the fill-in effect for this smoothness term. In order to do this we analyse the structure tensor matrix and use its eigenvectors to steer the smoothness term into components that are âorthogonal toâ and âaligned withâ image structures. This is done in primal-dual formulation. Results show a reduced end-point error and improved accuracy compared to the conventional L1 norm
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Practice And Tournament Volumes Of Young Golfers In Regional And National Squads
Practice plays a part in determining skill development, expertise (Ericsson & Pool, 2016; Baker et al., 2003), levels of creativity (Memmert et al., 2010) psychological preparation, increases in novice golfersâ gray matter (Bezzola et al., 2011), and decision making (Baker et al., 2003). Currently there is little empirical research demonstrating the amount of practice golfers conduct on a session to session, weekly, monthly, seasonal or annual basis and the impact this can have on their handicap. Previous research has suggested that deliberate practice can explain some of the variance in performance levels (Macnamara et al., 2016). However, with a paucity of golf specific research in this area, it is important to establish the volumes being undertaken and the impact of those volumes on the golferâs ability. This initial study aimed to establish the practice and tournament volumes of young golfers involved in a national governing bodyâs development programme and investigate how practice volumes influence handicap
Optical flow estimation via steered-L1 norm
Global variational methods for estimating optical flow are among the best performing methods due to the subpixel accuracy and the âfill-inâ effect they provide. The fill-in effect allows optical flow displacements to be estimated even in low and untextured areas of the image. The estimation of such displacements are induced by the smoothness term. The L1 norm provides a robust regularisation term for the optical flow energy function with a very good performance for edge-preserving. However this norm suffers from several issues, among these is the isotropic nature of this norm which reduces the fill-in effect and eventually the accuracy of estimation in areas near motion boundaries. In this paper we propose an enhancement to the L1 norm that improves the fill-in effect for this smoothness term. In order to do this we analyse the structure tensor matrix and use its eigenvectors to steer the smoothness term into components that are âorthogonal toâ and âaligned withâ image structures. This is done in primal-dual formulation. Results show a reduced end-point error and improved accuracy compared to the conventional L1 norm
Improving Information Perception of Graphical Displays â an Experimental Study on the Display of Column Graphs
Due to the fact that the quality of decisions is linked to the availability of information and to the ability of the
human brain to process this in an effective and efficient way, its selection and representation are of major
importance in business communication. Graphs and tables are widely used to transform raw data into a more
understandable format, but there are not any empirically tested guidelines that consider the cognition and
perception abilities of humans. This paper therefore explores how specific visual designs applied to column
graphs influence effectiveness and efficiency by applying the technique of eye-tracking to make an accurate
assessment of what the observer is looking at. The tested design elements show significant results and allow the
deduction of the following design guidelines for column graphs: do not use a 3D view for depicting two
dimensional data, do not use non-zero or broken axes, do show label values, do not use horizontal gridlines or
the label axis when showing label values and do align the label values depending on the available space (either
horizontally or vertically)
A Survey of Ocean Simulation and Rendering Techniques in Computer Graphics
This paper presents a survey of ocean simulation and rendering methods in
computer graphics. To model and animate the ocean's surface, these methods
mainly rely on two main approaches: on the one hand, those which approximate
ocean dynamics with parametric, spectral or hybrid models and use empirical
laws from oceanographic research. We will see that this type of methods
essentially allows the simulation of ocean scenes in the deep water domain,
without breaking waves. On the other hand, physically-based methods use
Navier-Stokes Equations (NSE) to represent breaking waves and more generally
ocean surface near the shore. We also describe ocean rendering methods in
computer graphics, with a special interest in the simulation of phenomena such
as foam and spray, and light's interaction with the ocean surface
Glyphs for space-time Jacobians of time-dependent vector fields
Glyphs have proven to be a powerful visualization technique for general tensor fields modeling physical phenomena
such as diffusion or the derivative of flow fields. Most glyph constructions, however, do not provide a way
of considering the temporal derivative, which is generally nonzero in non-stationary vector fields. This derivative
offers a deeper understanding of features in time-dependent vector fields. We introduce an extension to 2D and 3D
tensor glyph design that additionally encodes the temporal information of velocities, and thus makes it possible to
represent time-dependent Jacobians. At the same time, a certain set of requirements for general tensor glyphs is
fulfilled, such that the new method provides a visualization of the steadiness or unsteadiness of a vector field at a
given instance of time
Distributed OpenGL Rendering in Network Bandwidth Constrained Environments
Display walls made from multiple monitors are often used when very high resolution images are required. To utilise a display wall, rendering information must be sent to each computer that the monitors are connect to. The network is often the performance bottleneck for demanding applications, like high performance 3D animations. This paper introduces ClusterGL; a distribution library for OpenGL applications. ClusterGL reduces network traffic by using compression, frame differencing and multi-cast. Existing applications can use ClusterGL without recompilation. Benchmarks show that, for most applications, ClusterGL outperforms other systems that support unmodified OpenGL applications including Chromium and BroadcastGL. The difference is larger for more complex scene geometries and when there are more display machines. For example, when rendering OpenArena, ClusterGL outperforms Chromium by over 300% on the Symphony display wall at The University of Waikato, New Zealand. This display has 20 monitors supported by five computers connected by gigabit Ethernet, with a full resolution of over 35 megapixels. ClusterGL is freely available via Google Code
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