Corporation robots

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

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)]

An explicit model for the adiabatic evolution of quantum observables driven by 1D shape resonances

This paper is concerned with a linearized version of the transport problem where the Schr\"{o}dinger-Poisson operator is replaced by a non-autonomous Hamiltonian, slowly varying in time. We consider an explicitly solvable model where a semiclassical island is described by a flat potential barrier, while a time dependent 'delta' interaction is used as a model for a single quantum well. Introducing, in addition to the complex deformation, a further modification formed by artificial interface conditions, we give a reduced equation for the adiabatic evolution of the sheet density of charges accumulating around the interaction point.Comment: latex; 26 page

Literatura infantil y su traducción en el mundo árabe

La literatura infantil es un punto de encuentro sensible de lo científico y lo popular, lo analítico y lo espontáneo, lo real y lo imaginario, el pasado, el futuro y las concepciones políticas, éticas y religiosas en espejo fiel de la sociedad. Por eso, en este trabajo presentaremos una somera exposición de la evolución de la literatura infantil en el Mundo Árabe, su situación actual y los obstáculos que imposibilitan su desarrollo. También presentaremos una breve introducción teórica a la traducción de la literatura infantil.G.I. HUM 767 (ayudas a Grupos de Investigación de la Junta de Andalucía) / Editorial Comares (colección interlingua

Preparation And Characterisation Of Polyacrylonitrile And Poly(Methyl Methacrylate) Grafted Chitosan

Poly(acrylonitrile) (PAN) and poly(methyl methacrylate) were grafted onto chitosan in acidic medium by using cerium ammonium nitrate as initiator under nitrogen gas atmosphere. The grafting percentage showed dependence on initiator concentration, monomer concentration, acetic acid concentration , as well as time of the reaction and temperature of the reaction. Extent of grafting, percentage of homopolymer formation, grafting efficiency and total conversion were estimated. The highest percentage of grafting of acrylonitrile achieved was as high a

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

Artificial interface conditions parametrized by a complex number $\theta_{0}$ are introduced for 1D-Schr\"odinger operators. When this complex parameter equals the parameter $\theta\in i\R$ 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 $(h^N)_{N\in \N}$ as $h\to 0$, according to $\theta_{0}$.Comment: 60 pages, 13 figure