6,021 research outputs found
Growth models on the Bethe lattice
I report on an extensive numerical investigation of various discrete growth
models describing equilibrium and nonequilibrium interfaces on a substrate of a
finite Bethe lattice. An unusual logarithmic scaling behavior is observed for
the nonequilibrium models describing the scaling structure of the infinite
dimensional limit of the models in the Kardar-Parisi-Zhang (KPZ) class. This
gives rise to the classification of different growing processes on the Bethe
lattice in terms of logarithmic scaling exponents which depend on both the
model and the coordination number of the underlying lattice. The equilibrium
growth model also exhibits a logarithmic temporal scaling but with an ordinary
power law scaling behavior with respect to the appropriately defined lattice
size. The results may imply that no finite upper critical dimension exists for
the KPZ equation.Comment: 5 pages, 5 figure
An inversion formula for transport equation in 3-dimensions using several complex variable analysis
In this paper, the photon stationary transport equation has been extended
from to . A solution of the inverse problem is
obtained on a hyper-sphere and a hyper-cylinder as X-ray and Radon transform,
respectively. We show that these results can be transformed into each other and
they agree with known results
Recommended from our members
Multi agent system for negotiation in supply chain management
Supply chain management (SCM) is an emerging field that has commanded attention and support from the industrial community. Supply chain (SC) is defined as the chain linking each entity of the manufacturing and supply process from raw materials through to the end user. In order to increase supply chain effectiveness, minimize total cost, and reduce the bullwhip effect, integration and coordination of different systems and processes in the supply chain are required using information technology and effective communication and negotiation mechanism. To solve this problem, Agent technology provides the distributed environment a great promise of effective communication. The agent technology facilitates the integration of the entire supply chain as a networked system of independent echelon. In this article, a multi agent system has been developed to simulate a multi echelon supply chain. Each entity is modeled as one agent and their coordination lead to control inventories and minimize the total cost of SC by sharing information and forecasting knowledge and using negotiation mechanism. The result showed a reasonable reduction in total cost and bullwhip effect
- …