Hubs, or central trans-shipment facilities, allow the construction of a network where large numbers of direct connections can be replaced with fewer, indirect connections. Hub-andspoke configurations reduce and simplify network construction costs, centralize commodity handling and sorting, and allow carriers to take advantage of scale economies through consolidation of flows. Such networks have...

The hub median problem is to locate hub facilities in a network and to allocate non-hub nodes to hub nodes such that the total transportation cost is minimized. In the hub center problem, the main objective is one of minimizing the maximum distance/cost between origin destination pairs. In this paper, we study uncapacitated hub center problems with either single or multiple allocation. Both pro...

Various studies investigating the future impacts of integrating high levels of renewable energy make use of historical meteorological (met) station data to produce estimates of future generation. Hourly means of 10m horizontal wind are extrapolated to a standard turbine hub height using the wind profile power or log law and used to simulate the hypothetical power output of a turbine at that loc...

In this paper, performance analysis of Shared and Switched Ethernet LANs under Different Scenarios through simulation has been attempted using OPNET as simulating tool. The first scenario was comes under Hub Only scenario. The environment of the network is in an office, which covers an area of 100m X 100m. The hub used is a 16 port hub in an Ethernet environment with the following configuration...

Resective neurosurgery carries the risk of postoperative cognitive deterioration. The concept of 'hub (over)load', caused by (over)use of the most important brain regions, has been theoretically postulated in relation to symptomatology and neurological disease course, but lacks experimental confirmation. We investigated functional hub load and postsurgical cognitive deterioration in patients un...

The design of hub-and-spoke transport networks is a strategic planning problem, as the choice of hub locations has to remain unchanged for long time periods. However, strikes, disasters or traffic breakdown can lead to the unavailability of a hub for a short period of time. Therefore it is important to consider such events already in the planning phase, so that a proper reaction is possible; on...

Abstract Hub-filament systems (HFSs) are potential sites of protocluster and massive star formation, play a key role in mass accumulation. We report JCMT POL-2 850 ? m polarization observations toward the HFS SDC13. detect an organized magnetic field near hub center with cloud-scale “U-shape” morphology following western edge hub. Together larger-scale APEX 13 CO PLANCK data, we find that SDC13...