Browsing by Title

Now showing items 3118-3137 of 4806

  • Partial Reversal Acyclicity 

    Unknown author (2011-04-14)
    Partial Reversal (PR) is a link reversal algorithm which ensures that the underlying graph structure is destination-oriented and acyclic. These properties of PR make it useful in routing protocols and algorithms for solving ...

  • Participatory cloud computing : the community cloud management protocol 

    Mullins,Taariq (University of Cape TownFaculty of ScienceDepartment of Computer Science, 2014)
    This thesis work takes an investigative approach into developing a middleware solution for managing services in a community cloud computing infrastructure pre-dominantly made of interconnected low power wireless devices. ...

  • Particle Filtering Applied to Musical Tempo Tracking 

    Unknown author (2004-11-07)
    This paper explores the use of particle filters for beat tracking in musical audio examples. The aim is to estimate the time-varying tempo process and to find the time locations of beats, as defined by human perception. ...

  • Particle Filtering for Joint Symbol and Code Delay Estimation in DS Spread Spectrum Systems in Multipath Environment 

    Unknown author (2004-11-07)
    We develop a new receiver for joint symbol, channel characteristics, and code delay estimation for DS spread spectrum systems under conditions of multipath fading. The approach is based on particle filtering techniques and ...

  • Particle organization after viscous sedimentation in tilted containers 

    Palma, Sergio; Ihle, Christian F; Tamburrino, Aldo; Dalziel, Stuart Bruce (American Institute of PhysicsPhysics of Fluids, 2016-07-19)
    A series of sedimentation experiments and numerical simulations have been conducted to understand the factors that control the final angle of a static sediment layer formed by quasi-monodisperse particles settling in an ...

  • Particle-Vortex Duality from 3D Bosonization 

    Karch, Andreas; Tong, David (American Physical SocietyPhysical Review X, 2016-09-19)
    We show how particle-vortex duality in $d$ = 2 + 1 dimensions arises as part of an intricate web of relationships between different field theories. The starting point is “bosonization,” a conjectured duality that uses flux ...

  • Partitioning Strategies for Concurrent Programming 

    Unknown author (2009-06-16)
    This work presents four partitioning strategies, or patterns, useful for decomposing a serial application into multiple concurrently executing parts. These partitioning strategies augment the commonly used task and data ...

  • Parts of Recognition 

    Unknown author (1983-12-01)
    A complete theory of object recognition is an impossibility ??t simply because of the multiplicity of visual cues we exploit in elegant coordination to identify an object, but primarily because recognition involves ...

  • Passive and Active Grasping with a Prehensile Robot End-Effector 

    Unknown author (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 

    Unknown author (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 ...

  • Passive Navigation 

    Unknown author (1981-11-01)
    A method is proposed for determining the motion of a body relative to a fixed environment using the changing image seen by a camera attached to the body. The optical flow in the image plane is the input, while the ...

  • Patch complexity, finite pixel correlations and optimal denoising 

    Unknown author (2012-10-07)
    Image restoration tasks are ill-posed problems, typically solved withpriors. Since the optimal prior is the exact unknown density of natural images,actual priors are only approximate and typically restricted to small ...

  • Paterson's Worm 

    Unknown author (1973-06-01)
    A description of a mathematical idealization of the feeding pattern of a kind of worm is given.

  • Pattern formation in chemically interacting active rotors with self-propulsion 

    Liebchen, B; Cates, Michael Elmhirst; Marenduzzo, D (Royal Society of ChemistrySoft Matter, 2016-09-21)
    We demonstrate that active rotations in chemically signalling particles, such as autochemotactic $\textit{E. coli}$ close to walls, create a route for pattern formation based on a nonlinear yet deterministic instability ...

  • Pattern Motion Perception: Feature Tracking or Integration of Component Motions? 

    Unknown author (1994-10-01)
    A key question regarding primate visual motion perception is whether the motion of 2D patterns is recovered by tracking distinctive localizable features [Lorenceau and Gorea, 1989; Rubin and Hochstein, 1992] or by ...

  • Pattern recognition and the nondeterminable affine parameter problem 

    Geffen, Nathan (University of Cape TownFaculty of ScienceDepartment of Computer Science, 1998)
    This thesis reports on the process of implementing pattern recognition systems using classification models such as artificial neural networks (ANNs) and algorithms whose theoretical foundations come from statistics. The ...

  • Pattern-Directed Invocation with Changing Equations 

    Unknown author (1988-05-01)
    The interaction of pattern-directed invocation with equality in an automated reasoning system gives rise to a completeness problem. In such systems, a demon needs to be invoked not only when its pattern exactly matches ...

  • Pattern-forming in non-equilibrium quantum systems and geometrical models of matter 

    Franchetti, Guido (University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-01-07)
    This thesis is divided in two parts. The first one is devoted to the dynamics of polariton condensates, with particular attention to their pattern-forming capabilities. In many configurations of physical interest, the ...

  • Pauli-Lubanski, supertwistors, and the superspinning particle 

    Arvanitakis, AS; Mezincescu, L; Townsend, Paul Kingsley (Springer NatureJournal of High Energy Physics, 2017-06-28)
    We present a novel construction of the super-Pauli-Lubanski pseudo-vector for 4D supersymmetry and show how it arises naturally from the spin-shell constraints in the supertwistor formulation of superparticle dynamics. We ...

  • PAZATN: A Linguistic Approach to Automatic Analysis of Elementary Programming Protocols 

    Unknown author (1976-12-01)
    PATN is a design for a machine problem solver which uses an augmented transition network (ATN) to represent planning knowledge. In order to explore PATN's potential as a theory of human problem solving, a linguistic ...