Now showing items 180-199 of 327

    • An O(N) Algorithm for Three-Dimensional N-Body Simulations 

      Zhao, Feng (1987-10-01)
      We develop an algorithm that computes the gravitational potentials and forces on N point-masses interacting in three-dimensional space. The algorithm, based on analytical techniques developed by Rokhlin and Greengard, ...
    • Object Recognition with Pictorial Structures 

      Felzenszwalb, Pedro F. (2001-05-01)
      This thesis presents a statistical framework for object recognition. The framework is motivated by the pictorial structure models introduced by Fischler and Elschlager nearly 30 years ago. The basic idea is to model an ...
    • On Directional Selectivity in Vertebrate Retina: An Experimental and Computational Study 

      Borg-Graham, Lyle J. (1992-01-01)
      This thesis describes an investigation of retinal directional selectivity. We show intracellular (whole-cell patch) recordings in turtle retina which indicate that this computation occurs prior to the ganglion cell, ...
    • On Interpreting Stereo Disparity 

      Wildes, Richard P. (1989-02-01)
      The problems under consideration center around the interpretation of binocular stereo disparity. In particular, the goal is to establish a set of mappings from stereo disparity to corresponding three-dimensional scene ...
    • On Motion Planning with Uncertainty 

      Erdmann, Michael Andreas (1984-08-01)
      Robots must successfully plan and execute tasks in the presence of uncertainty. Uncertainty arises from errors in modeling, sensing, and control. Planning in the presence of uncertainty constitutes one facet of the ...
    • On Probabilistic Strategies for Robot Tasks 

      Erdmann, Michael A. (1989-08-01)
      Robots must act purposefully and successfully in an uncertain world. Sensory information is inaccurate or noisy, actions may have a range of effects, and the robot's environment is only partially and imprecisely ...
    • Online Learning of Non-stationary Sequences 

      Monteleoni, Claire (2003-06-12)
      We consider an online learning scenario in which the learner can make predictions on the basis of a fixed set of experts. The performance of each expert may change over time in a manner unknown to the learner. We formulate ...
    • ONTIC: A Knowledge Representation System for Mathematics 

      McAllester, David Allen (1987-07-01)
      Ontic is an interactive system for developing and verifying mathematics. Ontic's verification mechanism is capable of automatically finding and applying information from a library containing hundreds of mathematical ...
    • Optimal Unsupervised Learning in Feedforward Neural Networks 

      Sanger, Terence D. (1989-01-01)
      We investigate the properties of feedforward neural networks trained with Hebbian learning algorithms. A new unsupervised algorithm is proposed which produces statistically uncorrelated outputs. The algorithm causes ...
    • Parallel Coupled Micro-Macro Actuators 

      Morrell, John Bryant (1996-01-01)
      This thesis presents a new actuator system consisting of a micro-actuator and a macro-actuator coupled in parallel via a compliant transmission. The system is called the Parallel Coupled Micro-Macro Actuator, or PaCMMA. ...
    • A Parallel Crossbar Routing Chip for a Shared Memory Multiprocessor 

      Minsky, Henry (1991-03-01)
      This thesis describes the design and implementation of an integrated circuit and associated packaging to be used as the building block for the data routing network of a large scale shared memory multiprocessor system. ...
    • Parallel Methods for Synthesizing Whole-Hand Grasps from Generalized Prototypes 

      Pollard, Nancy S. (1994-01-01)
      This report addresses the problem of acquiring objects using articulated robotic hands. Standard grasps are used to make the problem tractable, and a technique is developed for generalizing these standard grasps to ...
    • A Parallel Processing Model of Musical Structures 

      Smoliar, Stephen W. (1971-09-01)
      Euterpe is a real-time computer system for the modeling of musical structures. It provides a formalism wherein familiar concepts of musical analysis may be readily expressed. This is verified by its application to the ...
    • Parallelism in Manipulator Dynamics 

      Lathrop, Richard D. (1984-12-01)
      This paper addresses the problem of efficiently computing the motor torques required to drive a lower-pair kinematic chain (e.g., a typical manipulator arm in free motion, or a mechanical leg in the swing phase) given ...
    • A Parallelizing Compiler Based on Partial Evaluation 

      Surati, Rajeev (1993-07-01)
      We constructed a parallelizing compiler that utilizes partial evaluation to achieve efficient parallel object code from very high-level data independent source programs. On several important scientific applications, ...
    • Parameter Estimation in Chaotic Systems 

      Hung, Elmer S. (1995-04-01)
      This report examines how to estimate the parameters of a chaotic system given noisy observations of the state behavior of the system. Investigating parameter estimation for chaotic systems is interesting because of ...
    • Passive and Active Grasping with a Prehensile Robot End-Effector 

      Greiner, Helen (1990-05-01)
      This report presents a design of a new type of robot end-effector with inherent mechanical grasping capabilities. Concentrating on designing an end-effector to grasp a simple class of objects, cylindrical, allowed a ...
    • Passive Dynamics in the Control of Gymnastic Maneuvers 

      Playter, Robert (1995-03-01)
      The control of aerial gymnastic maneuvers is challenging because these maneuvers frequently involve complex rotational motion and because the performer has limited control of the maneuver during flight. A performer can ...
    • Performance Evaluation of the Scheme 86 and HP Precision Architecture 

      Wu, Henry M. (1989-04-01)
      The Scheme86 and the HP Precision Architectures represent different trends in computer processor design. The former uses wide micro-instructions, parallel hardware, and a low latency memory interface. The latter ...
    • The PHD: A Planar, Harmonic Drive Robot for Joint Torque Control 

      Thompson, Bruce R. (1990-05-01)
      This thesis details the development of a model of a seven degree of freedom manipulator for position control. Then, it goes on to discuss the design and construction of a the PHD, a robot built to serve two purposes: ...