6,297 research outputs found

    Corporation robots

    Get PDF
    Nowadays, various robots are built to perform multiple tasks. Multiple robots working together to perform a single task becomes important. One of the key elements for multiple robots to work together is the robot need to able to follow another robot. This project is mainly concerned on the design and construction of the robots that can follow line. In this project, focuses on building line following robots leader and slave. Both of these robots will follow the line and carry load. A Single robot has a limitation on handle load capacity such as cannot handle heavy load and cannot handle long size load. To overcome this limitation an easier way is to have a groups of mobile robots working together to accomplish an aim that no single robot can do alon

    The Landau-Zener transition and the surface hopping method for the 2D Dirac equation for graphene

    Full text link
    A Lagrangian surface hopping algorithm is implemented to study the two dimensional massless Dirac equation for Graphene with an electrostatic potential, in the semiclassical regime. In this problem, the crossing of the energy levels of the system at Dirac points requires a particular treatment in the algorithm in order to describe the quantum transition-- characterized by the Landau-Zener probability-- between different energy levels. We first derive the Landau-Zener probability for the underlying problem, then incorporate it into the surface hopping algorithm. We also show that different asymptotic models for this problem derived in [O. Morandi, F. Sch{\"u}rrer, J. Phys. A: Math. Theor. 44 (2011)] may give different transition probabilities. We conduct numerical experiments to compare the solutions to the Dirac equation, the surface hopping algorithm, and the asymptotic models of [O. Morandi, F. Sch{\"u}rrer, J. Phys. A: Math. Theor. 44 (2011)]

    Adiabatic evolution of 1D shape resonances: an artificial interface conditions approach

    Full text link
    Artificial interface conditions parametrized by a complex number θ0\theta_{0} are introduced for 1D-Schr\"odinger operators. When this complex parameter equals the parameter θ∈iR\theta\in i\R of the complex deformation which unveils the shape resonances, the Hamiltonian becomes dissipative. This makes possible an adiabatic theory for the time evolution of resonant states for arbitrarily large time scales. The effect of the artificial interface conditions on the important stationary quantities involved in quantum transport models is also checked to be as small as wanted, in the polynomial scale (hN)N∈N(h^N)_{N\in \N} as h→0h\to 0, according to θ0\theta_{0}.Comment: 60 pages, 13 figure

    Designing and Developing a Web-Based Post Graduate Application System for UUM

    Get PDF
    The internet technologies are rapidly increasing. The aim of the study is to design and develop a Web-based Postgraduate Application System (WPAS) for Universiti Utara Malaysia. The WPAS is a real-time application system which is free from traditional document processing procedures. It provides a convenient graphics user interface (GUI) for both student and admission department staff. It allows students to make self-apply for their selected apply online, degree program, view application status, and update application information time-to-time. It also allows administrator to manage student account, offer of place and admission information. All of the services are possible anywhere at any time

    Visualisation and Metering of Two Phase Counter-gravity Slurry Flow using ERT

    Get PDF
    Two-phase slurry flow is encountered in many industries such as petroleum, mining and related industries. The abrasiveness of slurry and interaction of solid particles with the carrier liquid make slurry flow measurement one of the most challenging applications in multi-phase flow metering. This paper presents a new method of solid-liquid flow metering, in which the Electrical Resistance Tomography (ERT) is used in combination with a commercial Electromagnetic Flow Meter (EMF) to measure the volumetric flow rate of each phase. A set of experiments were carried out using a mixture of sand particles and tap water as slurry. Two different sand types (coarse and medium), with a particle size range of 53-2330 μm, were pumped through a 50 mm inner-diameter pipeline. The range of throughput solids concentration used in the experiments was 5%-10% and operated the transport velocity was 2-5 m/s. The effect of solids concentration and solids velocity on the measurement scheme is discussed. The measurement results are compared to that of Coriolis mass flow meter and discharge flow measurement system (flow diversion system). The accuracy of the measurement results is assessed and the performance of the applicability of the proposed method is highlighted
    • …
    corecore