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Software Defined Networking (SDN) has been proposed as a drastic shift in the networking paradigm, by decoupling network control from the data plane and making the switching infrastructure truly programmable. The key enabler of SDN, OpenFlow, has seen widespread deployment on production networks and its adoption is constantly increasing. Although openness(More)
Anterior capsulotomy, a crucial step in extracapsular implant surgery, is performed by several methods. All must deal with the inherent capriciousness of the tense anterior capsule and so their precision is questionable. An anterior capsulotomy instrument that uses bipolar radio-frequency endodiathermy is described. The modulated high frequency current(More)
  • R Klöti
  • 1992
Basing on the bipolar-coaxial wetfield-diathermy, introduced in microsurgery 1974 by the author, an anterior capsulotomy instrument using a modulated RF-current was published in 1984. In the meantime several patients have been operated successfully with this technique. However, further experimental studies allowed a refining of the instrument, an(More)
  • R Klöti
  • 1984
The author describes a miniature bipolar diathermy unit which can be used for several microsurgical purposes. It was developed from a standard endodiathermy instrument which has been in use for pars plana vitrectomy since 1973. It features bipolar forceps which can be used for welding conjunctival flaps and macrohemostasis in strabismus, orbital and lid(More)
Using an instrument developed by Klöti, the author performed anterior capsulotomy by means of a radio-frequency current in 21 cases of extracapsular cataract extraction. This group is compared with 21 control cases. The advantages and limits of this technique are discussed. The procedure was found to be simple and very helpful to the surgeon. There was no(More)
Introduction. This paper presents the vision of the Control Exchange Point (CXP) architectural model. The model is motivated by the inflexibility and ossification of today's inter-domain routing system, which renders critical QoS-constrained end-to-end (e2e) network services difficult or simply impossible to provide. CXPs operate on slices of ISP networks(More)
How many links can be cut before a network is bisected? What is the maximal bandwidth that can be pushed between two nodes of a network? These questions are closely related to network resilience, path choice for multipath routing or bisection bandwidth estimations in data centers. The answer is quantified using metrics such as the number of edge-disjoint(More)
Modern Internet applications, from HD video-conferencing to health monitoring and remote control of power-plants, pose stringent demands on network latency, bandwidth and availability. An approach to support such applications and provide inter-domain guarantees, enabling new avenues for innovation, is using centralized inter-domain routing brokers. These(More)