Introduction Support of RSTP in Catalyst Switches New Port States and Port Roles Port States Port Roles New BPDU Format New BPDU Handling BPDU are Sent Every Hello−Time Faster Aging of Information Accepts Inferior BPDUs Rapid Transition to Forwarding State Edge Ports Link Type Convergence with 802.1D Convergence with 802.1w Proposal/Agreement Sequence UplinkFast New Topology Change Mechanisms T...

ion. For an abstraction, T (λx.t) is obtained by introducing an agent λ, and simply linking its right auxiliary port (called body port) to the root of T (t) and its left one (variable port) to the unique wire corresponding to x in T (t). If x does not appear in t, then the left port of the agent λ is linked to an agent (for erasure).

The Port of Seville is an inland port located in the Guadalquivir River in the south of Spain and it is the unique Spanish inland port. Our research is focused on the simulation of the freight transport process beginning with the movement through the whole estuary of the river and finishing with the vessels arriving to the port dependencies, where the logistic operators’ load and unload process...

In the left figure two components are shown which are used to compute and display car speed: speed display and speedometer. Because the speedometer has to send speed updates to the speed display, it needs a port which is connected via a connector to a port on the speed display component. Ports have a multiplicity: this indicates how many ports of this type exist. Every port also has a role. The...

Taking the total volume of import and export trade of Ningbo port in 2004-2011 as the original data, a mathematical model of gray forecasting is established for the total volume of import and export trade of port. The paper predicts the total volume of import and export trade of Ningbo port in 2012-2015 during the 12th Five-Year Plan in accordance with the posterior variance testing. The analys...

In this paper we display a practical approach adopted for the formal verification of Fairisle ATM (Asynchronous Transfer Mode) switch port controller using model checking. The ATM port controller is part of the Cambridge Fairisle ATM network and plays a key role in the ATM switching process. In particular, we present our experience on the model checking of the ATM port controller using the VIS ...

Alexander Rosewell, Rosheila Dagina, Manoj Murhekar, Berry Ropa, Enoch Posanai, Samir Dutta, Ian Barr, Glen Mola, Anthony Zwi, and C. Raina MacIntyre Author affi liations: World Health Organization, Port Moresby, Papua New Guinea (A. Rosewell, M. Murhekar); University of New South Wales, Sydney, New South Wales, Australia (A. Rosewell, A. Zwi, C.R. MacIntyre); National Department of Health, Por...

PURPOSE Single-port laparoscopic surgery has evolved from an effort to minimize tissue trauma, limit morbidity, and maximize cosmesis. Limited data exist comparing single-port with conventional laparoscopy for right colectomy. Our aim is to compare single-port with laparoscopic colectomy with regard to safety and feasibility. We assert that this approach can be adopted in a safe and efficacious...