Various structural discontinuities, which form a discrete fracture network, play a significant role in the failure conditions and stability of the rock masses around underground excavations. Several continuum numerical methods have been used to study the stability of underground excavations in jointed rock masses but only few of them can take into account the influence of the pre-existing natur...

Delayed Fission Neutron (DFN) assay has been applied to the measurement of uranium content in sorbers exposed to natural seawater for the purpose of evaluating advanced ion exchange resins. DFN assay was found to be particularly suitable for such testing because it is selective, nondestructive, yields quantitative results in the submicrogram range, and requires relatively simple sample preparat...

Attendees: NHSBT Vicky Griffin (Chair), Stakeholder Relations Manager (VG) Tamsin May, Marketing and Campaigns Manager (TM) Heather O Shea (Minutes), Senior Stakeholder Relations Officer (HO S) Pauline O Brien, Media & PR Manager (PO B) Sarah Whyte, Media and PR Officer (SW) Transplant Sport (TS) Jo Brown, Administrator (JB) Donor Family Network (DFN) Nigel Burton, Vice Chairman (NB) British Ki...

Discrete fracture network (DFN) is an effective means of describing the coupling heat flow in underground fractured rock mass. In this paper, improved DFN proposed by introducing correlation function trace length and aperture, which more consistent with real data. Next, based on model, influence roughness fluid transmission was evaluated, relationship between aperture joint coefficient (JRC) es...

Anomaly traffic detecting using Netflow data is one of important problems in the field of network security. In this paper, we proposed an approach using MapReduce model, which was realized by means of the entropy observation and DFN (Distinct feature number) distribution deviations of traffic features under anomalies at small time scales. The MapReduce was used to deal with huge amounts of data...

Abstract: Wissenschaftsnetze leisten einen wichtigen Beitrag zur Sicherung von Standortfaktoren im internationalen Wettbewerb von Wissenschaft und Forschung. Trotz eingeschränkter finanzieller Möglichkeiten ist es notwendig, den Anwendern eine störungsfreie Netzplattform zur Verfügung zu stellen. Am Beispiel des vom DFN-Verein für die deutsche Wissenschaft organisierten Wissenschaftsnetzes XWiN...

Das elektronische Volltextinformationssystem OPUS, das aus einem DFN-Projekt hervorgegangen ist, hat sich zu einem stabilen Produkt im Hochschulbereich entwickelt. Aufgrund der Verbreitung wurden eine Reihe von aktuellen Entwicklungen im Bereich des elektronischen Publizierens von Hochschulschriften in einer technisch vollkommen überarbeiteten Version des Systems funktional aufgegriffen. Neben ...