Drip irrigation offers greater water use efficiency than conventional furrow practises, though routine maintenance is required for optimal performance. The continuous of low concentrations (10 ppm) H2O2 stabilized with hydroxyethylidene diphosphonic acid (HEDP) at two (H2O2 Low containing 1 ppb and High ppm HEDP) in drip was evaluated terms emitter, crop yield performance across three species. Emitter flow rates (EFRs) subsurface sugarcane were higher by 16% root intrusion into emitters...

Abstract Aerating water using microbubbles in irrigation for drip and subsurface systems has been reported to produce positive effects on plant growth yield. However, maintaining the uniformity of bubble distribution lines across long‐row configuration is a challenge. Air injection gas diffuser (Seair Diffusion System, Model SA75) significant gain dissolved oxygen (DO) over 850 m length tape. Furthermore, with Venturi, DO reached as high 44 ppm was maintained well above 35 up distance 700...

We present algorithms for rendering the intersection curves of implicit surfaces using octree-based recursive space subdivision techniques. Interval techniques used during process increase algorithms' robustness.

Abstract We are concerned with producing high‐quality images of parametric and implicit surfaces, in particular those non‐manifold features. present a point‐based technique for rendering surfaces that uses octree spatial subdivision natural interval exclusion test guarantees no parts the surface missed. This allows us to render at speeds comparable surfaces. also derive criteria guarantee complete pixel coverage surface. The method hidden elimination using z‐buffer, shadow casting buffer....

We discuss the polygonisation and rendering of non-manifold implicit surfaces using adaptive octree subdivision interval arithmetic for surface exclusion in nodes. present a new algorithm that polygonises some self intersect, or have other features such as separate sections meet at points. Gradient information is used to resolve ambiguous polygonisations plotting A line-stitching discussed allows multiple polygons be node. illustrate with number demonstrate its capabilities limitations.

This paper describes and tests the hypothesis that which ancient Chinese philosophy searched for, Tao, is same principle as found in modern Chaos Fractal Theories. An elucidation of several key principles notions art theory offered, coupled with fractal from theory. It argued an abstract form symbolic brush-strokes, elicit intrinsic mathematic values. example a evolving (animated) based on this notion given to test our hypothesis.

We use octree spatial subdivision to generate point clouds on complex nonmanifold implicit surfaces in order visualize them. The new scheme only uses sampling and an interval exclusion test. algorithm includes a test for pruning the resulting plotting nodes so that points closest surface are used rendering. This results improved image quality compared naive of intervals or affine arithmetic when rendering surfaces, particularly regions high curvature. discuss compare CPU GPU versions...

We present point based rendering techniques that render various types of contours as constant width slabs on surfaces. The requires evaluations the surface functions and gradients to shaded images. use parallel principle planes, located along a principal axis rotated by arbitrary steps, consisting concentric spheres Gaussian mean curvatures. also technique curvature maps illustrate with number parametric implicit surfaces, discuss their advantages disadvantages compared other techniques.

We present various algorithms for antialiasing silhouette edges of manifold and non-manifold implicit surfaces.The are: object space, edge blur, super-sampling, adaptive pixel-tracing, jitter-based antialiasing. discuss the strengths weaknesses approaches compare results. also contours rendered on surfaces. The rendering take place in GPU so are performed real time. This allows us, instance, to animate a surface time by changing contour parameters. give examples showing results our techniques types

A hybrid polygons-points algorithm based on a hierarchical decomposition of the bounding volume using an octree spatial data structure, and testing cell occupation with interval arithmetic is given. Polygons are produced where curvature in occupied cells low points used high. As result, rendered around extreme features polygons regular features. Using this approach implicit surfaces high complexity, such as recursively defined surfaces, rendered. discussion implementation given for GPU...

Abstract The efficacy of hydrogen peroxide (H 2 O ) was evaluated for the inhibition mycelial growth Phytophthora cinnamomi in vitro . infects many crops globally causing root, collar and crown rot, resulting significant economic losses producers. Two 30% (w/v) H products, each stabilised with a different concentration 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP) (3% versus 0.003% w/v) were compared to determine most efficacious as well potential interactive effects stabilising...

We present a point based rendering algorithm that uses hyper-cubes to perform spatial subdivision in 4D volume. A function interval exclusion test is used speed up the of Implicit surfaces this hyper-volume. orthonormal basis define camera, which projects isometric or perspective views onto plane for viewing. The technique requires evaluations implicit surface functions and gradients render shaded images. also allows hidden elimination using z-buffer modified use space. give examples its...

Our polygons/points method is octree based, uses interval and point sampling of the surface curvature to drive subdivision, a pruning algorithm generate points that are rendered where high, or around non-manifold features. This approach allows us visualise both manifold implicit surfaces high complexity. We discuss necessary modifications dual grid polygonise surfaces. The main advantage cracks do not form between shared plotting node faces at different depths. Polygons formed as mixture...

We present a point based rendering technique that uses iterated function systems to render arbitrary parametric and implicit surfaces with singularities non manifold features, the pixel precision of image. Its advantage over existing techniques is simplicity its implementation but in this form it slow. It only requires evaluations surface functions gradients shaded images. The also allows for hidden elimination using z-buffer shadow casting buffer.

We are concerned with producing high quality images of implicit surfaces, in particular those non-manifold features. In this work we present a point based technique that improves the rendering surfaces by using and gradient information to prune plotting nodes resulting from octree spatial subdivision on natural interval extension surface's function.