The opportunities afforded by improvements in the physics support segment of the Compact Ignition Tokamak (CIT) computer system are discussed. The conceptual design of the system is based on a network of man-machine w...
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The opportunities afforded by improvements in the physics support segment of the Compact Ignition Tokamak (CIT) computer system are discussed. The conceptual design of the system is based on a network of man-machine workstations, data acquisition/control processors, database servers, nodes and gateways. To interface with the conventional facility's commercial integrated process control system, the Integrated Database System will provide a plant image and will act as a gateway and server for the coordination of reference waveforms and setpoints. The Diagnostic Support Subsystem will consist of networked workstations and control/data acquisition processors with interfaces to CAMAC, programmable-logic controllers and probably more-modern busses for data-intensive front-end processing systems. Distributed database support for calibration, configuration, raw and results data will be provided. Interfaces to the real-time plasma control, hardwired interlock graphics hardcopy, and timing systems are included.
Coniferous trees growing in soils containing high concentrations of copper, lead, and zinc show a strong negative correlation between soil metal content and leaf area index, and a corresponding strong positive correla...
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Coniferous trees growing in soils containing high concentrations of copper, lead, and zinc show a strong negative correlation between soil metal content and leaf area index, and a corresponding strong positive correlation between Landsat MSS canopy radiance values and leaf area index. No relationship was found between tree density and soil metal or Landsat spectral data. The results of the study suggest that subtle or incipient levels of heavy metal stress in coniferous trees are most likely manifested by morphological rather than physiological changes in a canopy, and that these changes are capable of being detected by rather coarse spatial, spectral, and radiometric resolution sensor systems operating from space platforms, such as the Landsat multispectral scanner.
Spring and summer acquired Thematic Mapper data of a spruce forest growing in southeastern Austria show the normalised differences ND1 and ND3, ratio R41, band differences BD1 and BD3, and the greenness index TMG empl...
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ISBN:
(纸本)0892526955
Spring and summer acquired Thematic Mapper data of a spruce forest growing in southeastern Austria show the normalised differences ND1 and ND3, ratio R41, band differences BD1 and BD3, and the greenness index TMG employing Thematic Mapper bands 1, 3, and 4 best discriminate copper-lead-zinc stress in spruce trees of thirty Thematic Mapper single bands and transformations examined. Stress detection is slightly better in the summer versus the spring scene data.
The authors proposed a computer with low-level parallelism as one of the basic computer architectures and built a large-scale experimental system called QA-2. By low-level parallelism is meant that a long-word instruc...
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ISBN:
(纸本)081860719X
The authors proposed a computer with low-level parallelism as one of the basic computer architectures and built a large-scale experimental system called QA-2. By low-level parallelism is meant that a long-word instruction controls simultaneously many ALUs, buses, registers and memories in a fine-grained parallelism mode. The QA-2 uses a 256-bit instruction by which four different ALU operations, four memory accesses to different/continuous locations and one powerful sequence control are all specified and performed in parallel. If many simultaneously executable operations are detected and embedded in one instruction at compile time, this type of computer can provide a high degree of performance for a wide variety of applications. The architectural benefits and limitations of low-level parallelism in performing 3-D color image generation and interpreting Prolog/Lisp programs are described. The hardware organization with four ALUs, which has actually been implemented in the QA-2, is verified to be adequate. Nearly three out of four ALUs can work in parallel. Any architecture with more than four ALUs cannot achieve a significant degree of performance enhancement.
Since various kinds of terminals are used in a computer network, there arises the so called m equals n problem between one terminal and another, or one application and another, or application and terminal. To solve th...
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ISBN:
(纸本)0444700226
Since various kinds of terminals are used in a computer network, there arises the so called m equals n problem between one terminal and another, or one application and another, or application and terminal. To solve this problem, Basic or Form Class virtual terminal protocols for scroll-mode, page-mode, and form-mode terminals were proposed and are now being used in many networks. In this paper, we present a Window Class virtual terminal protocol based on the concept of the virtual terminal protocol proposed by ISO. The Window Class virtual terminal refers to terminals which have graphics primitives and imageprocessing capabilities as well as character operations used in Basic Class terminals and which have windowing capability. In this paper, the model for a Window Class virtual terminal, and its service facilities are described.
Classical mathematical methods for digital image enhancement can be used by the artist, designer, and teacher of computer art to enhance digital images. Examples of these techniques are illustrated. After video digiti...
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ISBN:
(纸本)0818606894
Classical mathematical methods for digital image enhancement can be used by the artist, designer, and teacher of computer art to enhance digital images. Examples of these techniques are illustrated. After video digitization of an image with a microcomputer, memory arrays of pixel brightness and color indices may be accessed. These arrays may then be manipulated to produce interesting graphic changes. Pixel-point mapping functions can modify image contrast, produce negative images, and allow other creative manipulations. Spatial filtering techniques are available.
Landsat MSS and Thematic Mapper data successfully detected metal-related stress in a pine tree stand growing in copper-lead-zinc-rich soils. The far-red and near-infrared MSS bands (MSS 3 and 4) and the near-infrared ...
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Landsat MSS and Thematic Mapper data successfully detected metal-related stress in a pine tree stand growing in copper-lead-zinc-rich soils. The far-red and near-infrared MSS bands (MSS 3 and 4) and the near-infrared Thematic Mapper band (TM 4) were best in defining metal stress in vegetation, followed closely by the visible (TM 1, 2 and 3) and shortwave infrared (TM 5 and 7) Thematic Mapper bands. Both MSS- and TM-based transformations using simple band ratios, normalized differences, and principal components generally produced poor to only fair results, with the exception of the first principal component.
Single and transformed band Landsat MSS data from three scene dates of two tree stands growing in metal-rich soils show the first principal component and the Kauth-Thomas green vegetative and, to a lesser extent, the ...
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Single and transformed band Landsat MSS data from three scene dates of two tree stands growing in metal-rich soils show the first principal component and the Kauth-Thomas green vegetative and, to a lesser extent, the soil brightness indices to be overall best in discriminating heavy metal stress in vegetation. The next most useful, in decreasing order of importance, are Landsat bands 6 and 7, perpendicular vegetation indices, band differences, and simple band ratios (all using Landsat bands 5, 6, and 7). Landsat bands 4 and 5 and the second principal component are the least useful for metal stress detection.
Overview on tree data structures associated to recursive decomposition of space. Tree data structures that are associated to recursive decomposition of space provide compact and hierarchical descriptions of objects. T...
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ISBN:
(纸本)0897911636
Overview on tree data structures associated to recursive decomposition of space. Tree data structures that are associated to recursive decomposition of space provide compact and hierarchical descriptions of objects. They are very well suited Tor standard operations on digital images, such that boolean operations, linear transformations, computations of geometrical quantities such that volumes, moments of inertia and finds applications in Geometric Modeling. computergraphics, CAD-CAM, Tomography etc... (see [BAEREASTMAN- HENRION 791, [BAUMGART 74j [EASTMAN 70l, [GILLESPIE-nAVlS 81]. [REDDY-RUBIN 78], [REQUICHA 80], [REQUICHA-VOELCKER 83], [SRIHARI 81], [YAU 83]). These data structures roughly fit into two parts: they provide either grid-based descriptions of images or Intrinsic representations of objects. Among the first category one can find the well known quadtrees, octrees and hyperoctrees data structures. The quadtree is the oldest one and Is also of interest for cartography and geographic information systems, but here we only deal with region representation of digital bilevel images. If / is a digital bilevel image built on a 2nx2∗ discrete grid of unit square pixels (h is the resolution of the image) we define the quadtree representation of I in the allowing manner: the total grid is split into four subquadrants, each of them being a 2∗1x2∗~1 discrete grid. Each of these subquadrants is also subdivided, and the process will stop when a quadrant of uniform color is reached. This is illustrated on figure 1. Thus we obtain a complete tree of height h where each internal node has outdegree four. Nodes in a quadtree are of 3 types: - interior nodes which represent non uniform quadrants of the image (sometimes called GRAY-nodes), - black leaves which represent black quadrants of any dimension (possibly single pixels) - white leaves which represent white quadrants of any dimension (possibly single pixels) A non pixel quadrant defines four subquadrants which arc calle
This conference proceedings contains 466 papers by various authors. The following topics are dealt with: layout for VLSI;CAD for super computers;digital filters;active circuits;parallel and distributed computation;bro...
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This conference proceedings contains 466 papers by various authors. The following topics are dealt with: layout for VLSI;CAD for super computers;digital filters;active circuits;parallel and distributed computation;broadband matching;nonlinear problems and chaos;large-scale simulation;VLSI filtering techniques;approximation for filters;active filters;coding system;system analysis and estimation;nonlinear circuit analysis;VLSI synthesis methods;modeling and simulation;design and methodologies for VLSI implementation;discrete-event systems;switched-capacitor networks;analysis and diagnosis of analog circuits;oscillators;nonlinear circuits and systems;algorithms for gate-level ATPG;information network;digital signal processors;graph theory with applications;chaos, bifurcations, and related topics;VLSI design;CAD and computergraphics in Japan;modeling and simulation of submicron devices, circuits, and systems;combinatorial algorithms and optimization;power electronics;layout algorithms for VLSI;VLSI circuits simulation;2-D signal processing;adaptive signal processing;graph theory;analog filters;power systems;VLSI testing;imageprocessing;multivariable networks and systems;continuous-time integrated filters;communication circuits;logic circuits;multidimensional signal processing;microwave filters and multiplexing networks;adaptive filters and systems;and parallel processing.
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