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Hintergrund. Bei Versagen konservativer Maßnahmen kommt bei der Dakryozystitis im Kindesalter eine Dakryozystorhinostomie (DZR) in Betracht. Indikationsstellung, Besonderheiten und Ergebnisse wurden retrospektiv überprüft. Patienten und Methode. Es wurden 72 Kinder im Alter von 10 Monaten bis 14 Jahren wegen einer persistierenden Dakryozystitis mit einer(More)
Home environments have a great potential of resource sharing and energy saving. More and more home computers are running on an always-on basis (e.g. media-centers or file-sharing clients). Such home environments have not been sufficiently analyzed regarding their energy-efficient operation, yet. This paper discusses network virtualiza-tion methods that are(More)
This paper reveals the power saving potential of P2P file sharing in two cases; popular and unpopular files. For popular files, we derive, with regard to BitTorrent, an expression for the optimal time seeders should support leechers. For unpopular files, we extend an existing model by taking into account leechers’ power consumption dependent on the load.(More)
In this paper, a new architecture for sharing resources amongst home environments is proposed. Our approach goes far beyond traditional systems for distributed virtualization like PlanetLab or Grid computing, since it relies on complete decentralization in a peer-to-peer like manner, and above all, aims at energy efficiency. Energy metrics are defined,(More)
Home networks recently gain importance due to their development from pure internal networks in form of an Ethernet LAN to converged networks integrating home, Internet, and access provider infrastructure. In emerging future home networking scenarios, service provisioning and network management is proposed by distributed architectures forming virtual home(More)
  • R Weidlich
  • 1996
Alfred Graefe is one of the three important ophthalmologists of the Graefe family in the nineteenth century, who were engaged scientifically with squint. He dealt with disorders of ocular motility in twenty publications. In: "The indication of operative treatment of paretic eye deviations" Graefe suggested three operative principles: Resection of the(More)
BACKGROUND Dacryocystitis in infants is a serious complication of congenital, but seldom of acquired nasolacrimal duct obstructions. If conservative treatment fails, dacryocystorhinostomy (DCR) appears to be effective. The indications, special clinical history and results will be reviewed. PATIENTS AND METHODS From 1/1970 to 2/2000, a total of 72 children(More)