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Hierarchical Classification In High Dimensional, Numerous Class Cases, Byungyong Kim, D. A. Landgrebe Jun 1990

Hierarchical Classification In High Dimensional, Numerous Class Cases, Byungyong Kim, D. A. Landgrebe

Department of Electrical and Computer Engineering Technical Reports

As progress in new sensor technology continues, increasingly high resolution imaging sensors are being developed. HIRIS, the High Resolution Imaging Spectrometer, for example, will gather data simultaneously in 102 spectral bands in the 0.4 - 2.5 micrometer wavelength region at 30 m spatial resolution. AVIRIS, the Airborne Visible and Infrared Imaging Spectrometer, covers the 0.4 - 2.5 micrometer in 224 spectral bands. These sensors give more detailed and complex data for each picture element and greatly increase the dimensionality of data over past systems. In applying pattern recognition methods to remote sensing problems, an inherent limitation is that there is …


A Lower Bound On Embedding Large Hypercubes Into Small Hypercubes, Ajay K. Gupta, Alfred J. Boals, Naveed A. Sherwani, Susanne E. Hambrusch May 1990

A Lower Bound On Embedding Large Hypercubes Into Small Hypercubes, Ajay K. Gupta, Alfred J. Boals, Naveed A. Sherwani, Susanne E. Hambrusch

Department of Computer Science Technical Reports

No abstract provided.


Towards Stability Criteria For Multidimensional Distributed Systems: Buffered Aloha Case, Wojciech Szpankowski May 1990

Towards Stability Criteria For Multidimensional Distributed Systems: Buffered Aloha Case, Wojciech Szpankowski

Department of Computer Science Technical Reports

No abstract provided.


Communication And Control In Spmd Parallel Numerical Computations, Dan C. Marinescu, John R. Rice, E. A. Vavalis May 1990

Communication And Control In Spmd Parallel Numerical Computations, Dan C. Marinescu, John R. Rice, E. A. Vavalis

Department of Computer Science Technical Reports

No abstract provided.


A Stochastic Modeling Approach To Region-And Edge-Based Image Segmentation, Aly A. Farag, Edward J. Delp May 1990

A Stochastic Modeling Approach To Region-And Edge-Based Image Segmentation, Aly A. Farag, Edward J. Delp

Department of Electrical and Computer Engineering Technical Reports

The purpose of image segmentation is to isolate objects in a scene from the background. This is a very important step in any computer vision system since various tasks, such as shape analysis and object recognition, require accurate image segmentation. Image segmentation can also produce tremendous data reduction. Edge-based and region-based segmentation have been examined and two new algorithms based on recent results in random field theory have been developed. The edge-based segmentation algorithm uses the pixel gray level intensity information to allocate object boundaries in two stages: edge enhancement, followed by edge linking. Edge enhancement is accomplished by maximum …


Sensor Array Signal Processing Via Eigenanalysis Of Matrix Pencils Composed Of Data Derived From Translationally Invariant Subarrays, Demosthenis Stavrinides, Michael D. Zoltowski May 1990

Sensor Array Signal Processing Via Eigenanalysis Of Matrix Pencils Composed Of Data Derived From Translationally Invariant Subarrays, Demosthenis Stavrinides, Michael D. Zoltowski

Department of Electrical and Computer Engineering Technical Reports

An algorithm is developed for estimating characteristic parameters associated with a "scene" of radiating sources given the data derived from a pair of translationally invariant arrays, the X and Y arrays, which are displaced relative to one another. The algorithm is referred to as PR O—E SPRIT and is predicated on invoking two recent mathematical developments: (1) the SVD based solution to the Procrustes problem of optimally approximating an invariant subspace rotation and (2) the Total Least Squares method for perturbing each of the two estimates of a common subspace in a "minimal" fashion until the two perturbed spaces are …


Study Of A New Silicon Epitaxy Technique: Confined Lateral Selective Epitaxial Growth, Peter J. Schubert, Gerold W. Neudeck May 1990

Study Of A New Silicon Epitaxy Technique: Confined Lateral Selective Epitaxial Growth, Peter J. Schubert, Gerold W. Neudeck

Department of Electrical and Computer Engineering Technical Reports

This work describes a significant new advance in the technique of silicon selective epitaxy called Confined Lateral Selective Epitaxial Growth (CLSEG). CLSEG is a method for forming thin films of single crystal silicon on top of an insulating layer or film. Such thin films are generically termed Silicon-On- Insulator (SOI), and1 allow dielectric isolation of integrated circuit elements, making them more efficient (faster with lower power), more resistant to radiation, and smaller than conventional integrated circuits, ionizing radiation than conventional integrated circuits. CLSEG offers advantages over current methods of achieving SOI by being easily manufactured, inherently reproducible, and having greater …


Invariant Reconstruction Of Curves And Surfaces With Discontinuities With Applications In Computer Vision, Robert L. Stevenson, Edward J. Delp May 1990

Invariant Reconstruction Of Curves And Surfaces With Discontinuities With Applications In Computer Vision, Robert L. Stevenson, Edward J. Delp

Department of Electrical and Computer Engineering Technical Reports

The reconstruction of curves and surfaces from sparse data is an important task in many applications. In computer vision problems the reconstructed curves and surfaces generally represent some physical property of a real object in a scene. For instance, the sparse data that is collected may represent locations along the boundary between an object and a background. It may be desirable to reconstruct the complete boundary from this sparse data. Since the curves and surfaces represent physical properties, the characteristics of the reconstruction process differs from straight forward fitting of smooth curves and surfaces to a set of data in …


Parallel Sparse: Data Structure And Organization, Mo Mu, John R. Rice May 1990

Parallel Sparse: Data Structure And Organization, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


Building Solid Models From Polygonal Data, George Vanecek May 1990

Building Solid Models From Polygonal Data, George Vanecek

Department of Computer Science Technical Reports

No abstract provided.


The Structure Of Parallel Sparse Matrix Algorithms For Solving Partial Differential Equations On Hypercubes, Mo Mu, John R. Rice Apr 1990

The Structure Of Parallel Sparse Matrix Algorithms For Solving Partial Differential Equations On Hypercubes, Mo Mu, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.


A New Design For Distributed Systems: The Remote Memory Model, Douglas E. Comer, James Griffioen Apr 1990

A New Design For Distributed Systems: The Remote Memory Model, Douglas E. Comer, James Griffioen

Department of Computer Science Technical Reports

No abstract provided.


Information Systems And The Erosion Of Personal Privacy, Scott D. Sterner Apr 1990

Information Systems And The Erosion Of Personal Privacy, Scott D. Sterner

Department of Computer Science Technical Reports

No abstract provided.


Conversion Methods Between Parametric And Implicit Curves And Surfaces, Christoph M. Hoffmann Apr 1990

Conversion Methods Between Parametric And Implicit Curves And Surfaces, Christoph M. Hoffmann

Department of Computer Science Technical Reports

No abstract provided.


Good Triangulations In Plane, Tamal K. Dey Apr 1990

Good Triangulations In Plane, Tamal K. Dey

Department of Computer Science Technical Reports

No abstract provided.


Adaptability Experiments In The Raid Distributed Database System, Bharat Bhargava, Karl Friesen, Abdelsalam Helal, John Riedl Apr 1990

Adaptability Experiments In The Raid Distributed Database System, Bharat Bhargava, Karl Friesen, Abdelsalam Helal, John Riedl

Department of Computer Science Technical Reports

No abstract provided.


Programming Of Path Specific Robot Operations With Optimal Part Placement, Rick Guptill, Shaheen Ahmad Apr 1990

Programming Of Path Specific Robot Operations With Optimal Part Placement, Rick Guptill, Shaheen Ahmad

Department of Electrical and Computer Engineering Technical Reports

In this paper we describe a task level programming system for path specific robot operations. We define path specific tasks as those robot tasks in which the path the manipulator end effector has to follow is fixed and is given, such operations may include welding or sealant application. The initial path selection is made through a graphical interface using a pointing device (such as a mouse) to outline the desired path on a CAD model of the workpiece. The final result of the system is the part location, which enables the chosen manipulator to optimally perform the desired task. Optimality …


Investigation Of A Resistive-Gate Mesfet Contiguous Domain Oscillator, Yiwen Yin, James A. Cooper Jr., Hua Fu Apr 1990

Investigation Of A Resistive-Gate Mesfet Contiguous Domain Oscillator, Yiwen Yin, James A. Cooper Jr., Hua Fu

Department of Electrical and Computer Engineering Technical Reports

The goal of this research is to investigate a novel microwave oscillator — the MESFET version contiguous domain oscillator. By combining the transferred electron effect in GaAs material with the two dimensional electrostatics in the device, a series of contiguous electron packets can be generated in the channel of a resistive gate MESFET. Therefore this novel device can eliminate some restraints which are suffered by the presently existing oscillators, and provides unique new features for oscillators: a wide range of oscillation frequency (from a few tens of GHz to a hundred GHz), an ideal current source, instantaneous frequency tuning, compatibility …


Maintaining Transaction Consistency In Hddbss Using Quasi Serializable Executions, Weimin Du, Ahmed K. Elmagarmid Mar 1990

Maintaining Transaction Consistency In Hddbss Using Quasi Serializable Executions, Weimin Du, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.


Maintaining Quasi Serializability In Hddbss, Weimin Du, Ahmed K. Elmagarmid, Won Kim Mar 1990

Maintaining Quasi Serializability In Hddbss, Weimin Du, Ahmed K. Elmagarmid, Won Kim

Department of Computer Science Technical Reports

No abstract provided.


Preserving Data Integrity In Hddbss Using Quasi Serializable Executions, Ahmed K. Elmagarmid, Weimin Du Mar 1990

Preserving Data Integrity In Hddbss Using Quasi Serializable Executions, Ahmed K. Elmagarmid, Weimin Du

Department of Computer Science Technical Reports

No abstract provided.


Critical Issues In Multidatabase Systems, Ahmed K. Elmagarmid, Marek Rusinkiewicz Mar 1990

Critical Issues In Multidatabase Systems, Ahmed K. Elmagarmid, Marek Rusinkiewicz

Department of Computer Science Technical Reports

No abstract provided.


A Multidatabase Transaction Model For Interbase, Ahmed Elmagarmid, Y. Leu, W. Litwin, Marek Rusinkiewicz Mar 1990

A Multidatabase Transaction Model For Interbase, Ahmed Elmagarmid, Y. Leu, W. Litwin, Marek Rusinkiewicz

Department of Computer Science Technical Reports

No abstract provided.


Hybrid Value/Event Representation Of Replicated Objects, Bharat Bhargava, Shirley Browne Mar 1990

Hybrid Value/Event Representation Of Replicated Objects, Bharat Bhargava, Shirley Browne

Department of Computer Science Technical Reports

No abstract provided.


Modified Successive Overrelaxation (Msor) And Equivalent 2-Step Iterative Methods For Collocation Matrices, Apostolos Hadjidimos, Yiannis G. Saridakis Mar 1990

Modified Successive Overrelaxation (Msor) And Equivalent 2-Step Iterative Methods For Collocation Matrices, Apostolos Hadjidimos, Yiannis G. Saridakis

Department of Computer Science Technical Reports

No abstract provided.


The Second International Conference On Expert Systems For Numerical Computing, John R. Rice, Robert Vichnevetsky, Elias N. Houstis Mar 1990

The Second International Conference On Expert Systems For Numerical Computing, John R. Rice, Robert Vichnevetsky, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.


Output-Sensitive Methods For Rectilinear Hidden Surface Removal, Michael T. Goodrich, Mikhail J. Atallah, Mark H. Overmars Mar 1990

Output-Sensitive Methods For Rectilinear Hidden Surface Removal, Michael T. Goodrich, Mikhail J. Atallah, Mark H. Overmars

Department of Computer Science Technical Reports

No abstract provided.


Recruitment And Retention Of Engineers And Managers In Transportation Agencies, Donald L. Hiatte Mar 1990

Recruitment And Retention Of Engineers And Managers In Transportation Agencies, Donald L. Hiatte

Purdue Road School

No abstract provided.


Role Of Universities In Gis, Richard Hyde Mar 1990

Role Of Universities In Gis, Richard Hyde

Purdue Road School

No abstract provided.


Visualization Of Surfaces In Four-Dimensional Space, Christoph M. Hoffmann, Jianhua Zhou Mar 1990

Visualization Of Surfaces In Four-Dimensional Space, Christoph M. Hoffmann, Jianhua Zhou

Department of Computer Science Technical Reports

No abstract provided.