NCC Simulation Model: Simulating the operations of the network control center, phase 2

The simulation of the network control center (NCC) is in the second phase of development. This phase seeks to further develop the work performed in phase one. Phase one concentrated on the computer systems and interconnecting network. The focus of phase two will be the implementation of the network message dialogues and the resources controlled by the NCC. These resources are requested, initiated, monitored and analyzed via network messages. In the NCC network messages are presented in the form of packets that are routed across the network. These packets are generated, encoded, decoded and processed by the network host processors that generate and service the message traffic on the network that connects these hosts. As a result, the message traffic is used to characterize the work done by the NCC and the connected network. Phase one of the model development represented the NCC as a network of bi-directional single server queues and message generating sources. The generators represented the external segment processors. The served based queues represented the host processors. The NCC model consists of the internal and external processors which generate message traffic on the network that links these hosts. To fully realize the objective of phase two it is necessary to identify and model the processes in each internal processor. These processes live in the operating system of the internal host computers and handle tasks such as high speed message exchanging, ISN and NFE interface, event monitoring, network monitoring, and message logging. Inter process communication is achieved through the operating system facilities. The overall performance of the host is determined by its ability to service messages generated by both internal and external processors

Role of Transport Networks in Supporting the Spatial Dimension of Sustainability

The main messages of the contribution in five points are the following: (1) Besides temporal relations of sustainability, we also have to underline the importance of the spatial context of it. (2) It is the internal network of a region that helps to preserve the structure and the existing connections within the region. (3) The proper external connections of the region are also very important, but their positive effects can reach the given region only if the internal transmitter elements are existing and the region is able to adapt these effects. (4) There is no such rule that the more transit (through traffic) would be better. The transport that exceeds the region’s adaptive capacity is harmful for the local economy, society and environment alike. (5) A newer and also important function of the transport management is to bypass those areas where the extensive traffic would be harmful