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Articles 18391 - 18420 of 19337
Full-Text Articles in Entire DC Network
A Lower Bound On Embedding Large Hypercubes Into Small Hypercubes, Ajay K. Gupta, Alfred J. Boals, Naveed A. Sherwani, Susanne E. Hambrusch
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.
The Damping Of Panels By Thick Layers Of Elastic Porous Media, Nae-Ming Stuart Shiau, T J. Wahl, J Stuart Bolton
The Damping Of Panels By Thick Layers Of Elastic Porous Media, Nae-Ming Stuart Shiau, T J. Wahl, J Stuart Bolton
Publications of the Ray W. Herrick Laboratories
In this paper a technique is presented for calculating the response of a panel to a line force input when loaded by both a finite‐depth layer of elastic porous material and a heavy fluid. Damping theories normally require that an attached damping layer be thin compared to the flexural wavelength in the base panel. Here this requirement is avoided by allowing explicitly for wave propagation within the damping layer. Specifically, the porous damping layer is modeled using a theory derived by Biot that allows for the existence of two dilatational waves and a transverse wave. Conditions required to couple the …
Adaptability Experiments In The Raid Distributed Database System, Bharat Bhargava, Karl Friesen, Abdelsalam Helal, John Riedl
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.
Data Layout Optimization And Code Transformation For Paged Memory Systems, Lung-Yu Chang, Henry G. Dietz
Data Layout Optimization And Code Transformation For Paged Memory Systems, Lung-Yu Chang, Henry G. Dietz
Department of Electrical and Computer Engineering Technical Reports
Supercomputers need not only to have fast functional units, but also to have rapid access to massive quantities of data. Virtual memory paging and physically distributed memory systems both attempt to provide this large data space, but performance of a computer system using either memory organization is highly dependent on the page reference pattern and the number of pages available locally. Despite this, surprisingly little work has been done toward using the compiler to optimize memory system performance. In this paper, we introduce compiler techniques which use a combination of data layout and code transformation to improve paging performance for …
Programming Of Path Specific Robot Operations With Optimal Part Placement, Rick Guptill, Shaheen Ahmad
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 …
The Second International Conference On Expert Systems For Numerical Computing, John R. Rice, Robert Vichnevetsky, Elias N. Houstis
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.
Recruitment And Retention Of Engineers And Managers In Transportation Agencies, Donald L. Hiatte
Recruitment And Retention Of Engineers And Managers In Transportation Agencies, Donald L. Hiatte
Purdue Road School
No abstract provided.
The Tennessee Geodetic Reference Network (Tgrn): An Update*, James H. Zeigler
The Tennessee Geodetic Reference Network (Tgrn): An Update*, James H. Zeigler
Purdue Road School
No abstract provided.
If You're Not Managing Your Department, Then Who Is?, Kent O. Lande
If You're Not Managing Your Department, Then Who Is?, Kent O. Lande
Purdue Road School
No abstract provided.
Shape Recovery From Robot Contour Tracking With Force Feedback, Shaheen Ahmad, Chuan N. Lee
Shape Recovery From Robot Contour Tracking With Force Feedback, Shaheen Ahmad, Chuan N. Lee
Department of Electrical and Computer Engineering Technical Reports
In this paper we describe a process for shape recovery from robot contour-tracking operations with force feedback. Shape recovery is an important task for self-teaching robots and for exploratory operations in unknown environments. An algorithm which directs a position controlled robot around an unknown planar contour using the steady state contact force information is described in this paper. The shape recovery from the planar contouring is not a trivial problem. It is experimentally found that there is significant distortion of the original contour if direct kinematics is used to recover the object’s shape, as we are unable to recover the …
Supporting Queries In The O-Raid Object-Oriented Database System, James G. Mullen, Jagannathan Srinivasan, Prasun Dewan, Bharat Bhargava
Supporting Queries In The O-Raid Object-Oriented Database System, James G. Mullen, Jagannathan Srinivasan, Prasun Dewan, Bharat Bhargava
Department of Computer Science Technical Reports
No abstract provided.
A Limiting Distribution For The Depth In Patricia Tries, Bonita Rais, Philippe Jacquet, Wojciech Szpankowski
A Limiting Distribution For The Depth In Patricia Tries, Bonita Rais, Philippe Jacquet, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
P-Complete Geometric Problems, Mikhail J. Atallah, Paul Callahan, Michael T. Goodrich
P-Complete Geometric Problems, Mikhail J. Atallah, Paul Callahan, Michael T. Goodrich
Department of Computer Science Technical Reports
No abstract provided.
Adaptive Control Of Flexible Joint Robots Derived From Arm Energy Considerations, Shaheen Ahmad, Fouad Mrad
Adaptive Control Of Flexible Joint Robots Derived From Arm Energy Considerations, Shaheen Ahmad, Fouad Mrad
Department of Electrical and Computer Engineering Technical Reports
Almost all industrial robots exhibit joint flexibility due to mechanical compliance of their gear boxes. In this paper we outline a design of an adaptive controller for flexible joint robots based on the arms energy. The desired actuator trajectory in a flexible joint robot is dependent not only on the desired kinematic trajectory of the link but also on the link dynamics. Unfortunately, link dynamic parameters are unknown in most cases, as a result the desired actuator trajectory is also unknown. To overcome this difficulty, a number of control schemes have suggested the use of acceleration and link jerk feedback. …
Pulse Width Modulated Control Of Robotic Manipulators, Hebertt Sira-Ramirez, Mohammed Zribi, Shaheen Ahmad
Pulse Width Modulated Control Of Robotic Manipulators, Hebertt Sira-Ramirez, Mohammed Zribi, Shaheen Ahmad
Department of Electrical and Computer Engineering Technical Reports
In this paper we propose a practical discontinuous feedback control scheme for the regulation of joint positions of robotic manipulators. A robust on-off switching control strategy based on a pulse-width-modulation (PWM) feedback scheme is proposed for the joint torques. The discontinuous PWM controller design is carried out on the basis of a suitable controller designed for an average model which is of continuous nature. Simulations of the closed loop performance of the proposed control scheme are presented for a two-link robotic manipulator
Towards Automatic Grid Generation Using Binary Space Partition Trees, George Vanecek
Towards Automatic Grid Generation Using Binary Space Partition Trees, George Vanecek
Department of Computer Science Technical Reports
No abstract provided.
G1 Interpolation Using Piecewise Quadric And Cubic Surfaces, Chanderjit L. Bajaj
G1 Interpolation Using Piecewise Quadric And Cubic Surfaces, Chanderjit L. Bajaj
Department of Computer Science Technical Reports
No abstract provided.
Geometric Computations With Algebraic Varieties Of Bounded Degree, Chanderjit L. Bajaj
Geometric Computations With Algebraic Varieties Of Bounded Degree, Chanderjit L. Bajaj
Department of Computer Science Technical Reports
No abstract provided.
Fiber Reinforced Aluminum Alloy For The Moving Parts Of Rotary Compressor, T. Komatsubara, M. Okajima, H. Hoshino, Y. Obokata
Fiber Reinforced Aluminum Alloy For The Moving Parts Of Rotary Compressor, T. Komatsubara, M. Okajima, H. Hoshino, Y. Obokata
International Compressor Engineering Conference
No abstract provided.
The Use Of An Ejector As A Refrigerant Expander, A. A. Kornhauser
The Use Of An Ejector As A Refrigerant Expander, A. A. Kornhauser
International Refrigeration and Air Conditioning Conference
No abstract provided.
Status Report On Polyalkylene Glycol Lubricants For Use With Hfc-134a In Refrigeration Compressors, S. G. Sundaresan
Status Report On Polyalkylene Glycol Lubricants For Use With Hfc-134a In Refrigeration Compressors, S. G. Sundaresan
International Refrigeration and Air Conditioning Conference
No abstract provided.
Evaporation And Condensation Heat Transfer Coefficients For A Hcfc-124/Hcfc-22/Hfc-152a Blend And Cfc-12, S. J. Eckels, M. B. Pate
Evaporation And Condensation Heat Transfer Coefficients For A Hcfc-124/Hcfc-22/Hfc-152a Blend And Cfc-12, S. J. Eckels, M. B. Pate
International Refrigeration and Air Conditioning Conference
No abstract provided.
Stochastic (Probabilistic) Simulation For Design And Analysis Of Vapor Compression Refrigeration/Heat Pump Systems, M. Uddin, H. L. Chavez
Stochastic (Probabilistic) Simulation For Design And Analysis Of Vapor Compression Refrigeration/Heat Pump Systems, M. Uddin, H. L. Chavez
International Refrigeration and Air Conditioning Conference
No abstract provided.
Niger Applied Agricultural Research Project. Contract Aid 683-0256-C-00-8024-00. Consultancy Report., E. Stewart Saunders
Niger Applied Agricultural Research Project. Contract Aid 683-0256-C-00-8024-00. Consultancy Report., E. Stewart Saunders
Libraries Faculty and Staff Supplemental Materials
Evaluation and recommendations for the documentation centers of the Institut National de Recherche Agronomique du Niger carried out in 1990.
Simulation Of Free Radical Reactions In Biology And Medicine: A New Two-Compartment Kinetic Model Of Intracellular Lipid Peroxidation, Charles F. Babbs, Melissa Gale Steiner
Simulation Of Free Radical Reactions In Biology And Medicine: A New Two-Compartment Kinetic Model Of Intracellular Lipid Peroxidation, Charles F. Babbs, Melissa Gale Steiner
Weldon School of Biomedical Engineering Faculty Publications
To explore mechanisms of free radical reactions leading to intracellular lipid peroxidation in living systems, we developed a computational model of up to 109 simultaneous enzymatic and free radical reactions thought to be involved in the initiation, propagation, and termination of membrane lipid peroxidation. Rate constants for the various reactions were obtained from the published literature. The simulation model included a lipid membrane compartment and an aqueous cytosolic compartment, between which various chemical species were partitioned. Lipid peroxidation was initiated by the iron-catalyzed, superoxide-driven Fenton reaction. A "C"-language computer program implemented numerical solution of the steady-state rate equations for concentrations …
Twin-Screw Compressor Performance And Complex Ester Lubricants With Hcfc-22, L. J. Sjoholm, G. D. Short
Twin-Screw Compressor Performance And Complex Ester Lubricants With Hcfc-22, L. J. Sjoholm, G. D. Short
International Compressor Engineering Conference
No abstract provided.
Numerical Analysis In The Flow Field Of A Labyrinth Seal, K. W. Lee, S. U. Lee, C. H. Kim, T. H. Song
Numerical Analysis In The Flow Field Of A Labyrinth Seal, K. W. Lee, S. U. Lee, C. H. Kim, T. H. Song
International Compressor Engineering Conference
No abstract provided.
Distributed And Non-Steadv State Modelling Of An Air Cooler, H. W. Wang, S. Touber
Distributed And Non-Steadv State Modelling Of An Air Cooler, H. W. Wang, S. Touber
International Refrigeration and Air Conditioning Conference
No abstract provided.
The Study Of Rotary Compressor Driven Under Low Electric Frequencies, Y. Sato, Y. Shirafuyi
The Study Of Rotary Compressor Driven Under Low Electric Frequencies, Y. Sato, Y. Shirafuyi
International Compressor Engineering Conference
No abstract provided.
Dynamics Of Compliance Mechanisms Scroll Compressors, Part Ii: Radial Compliance, J. J. Nieter
Dynamics Of Compliance Mechanisms Scroll Compressors, Part Ii: Radial Compliance, J. J. Nieter
International Compressor Engineering Conference
No abstract provided.