Heavy Load Rollers in Logistic Systems

Randomized load balancing in heavy tra c

We consider three randomized schemes for load balancing among a xed number, N , of resources, and analyze them in the heavy tra c limit. The rst is join the shortest queue, where arrivals are routed to the shortest among d randomly chosen queues, where d ∈ {2, . . . , N}. The second is redundancy routing, where jobs are replicated d times, routed simultaneously to d randomly chosen queues, and ...

Loss of Load Expectation Assessment in Deregulated Power Systems Using Monte Carlo Simulation and Intelligent Systems

Deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. In this paper, generation reliability is considered, and a method for its assessment using intelligent systems is proposed. Also, because of power market and generators’ forced outages stochastic behavior, Monte Carlo Simulation is used for reliability evaluation. Generation r...

Emergent vortices in populations of colloidal rollers.

Coherent vortical motion has been reported in a wide variety of populations including living organisms (bacteria, fishes, human crowds) and synthetic active matter (shaken grains, mixtures of biopolymers), yet a unified description of the formation and structure of this pattern remains lacking. Here we report the self-organization of motile colloids into a macroscopic steadily rotating vortex. ...

High breeding performance of European Rollers Coracias

Illustrating Constraint Programming Systems in Logistic Planning

Logistic systems analysts use a wide array of modeling systems such as algebraic and logic programs. Two simple examples show how they mesh as Constraint Logic programs, emphasizing the visual style of formulation. A facility location problem is solved in Prolog. Its standard mathematical programming formulation is then represented in CLP(R) to reach an optimal solution faster. The examples are...