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DUL (other)
DUL may refer to: * Dialup Users List * DOLCE+DnS-Ultralite - A lighter OWL axiomatization of DOLCE and DnS upper ontologies. * Dullingham railway station See also * Dul (other) Dul may refer to: *Dul Madoba, a Somali group * Dul Koeun, Cambodian politician *Dul Rural District, in West Azerbaijan Province, Iran See also * DUL (other) *Dull (other) Dull may refer to: __NOTOC__ Places * Dull, Perth and Kin ... {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dialup Users List
A Dial-up/Dynamic User List (DUL) is a type of DNSBL which contains the IP addresses an ISP assigns to its customer on a temporary basis, often using DHCP or similar protocols. Dynamically assigned IP addresses are contrasted with static IP addresses which do not change once they have been allocated by the service provider. DULs serve several purposes. Their primary function is to assist an ISP in enforcement of its Acceptable Use Policy, many of which prohibit customers from setting up an email server. Customers are expected to use the email facilities of the service provider. This use of a DUL is especially helpful in curtailing abuse when a customer's computer has been converted into a zombie computer and is distributing email without the knowledge of the computer's owner. A second major use involves receivers who do not wish to accept email from computers with dynamically assigned email addresses. They use DULs to enforce this policy. Receivers adopt such policies because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Ontology
In information science, an upper ontology (also known as a top-level ontology, upper model, or foundation ontology) is an ontology (in the sense used in information science) which consists of very general terms (such as "object", "property", "relation") that are common across all domains. An important function of an upper ontology is to support broad semantic interoperability among a large number of domain-specific ontologies by providing a common starting point for the formulation of definitions. Terms in the domain ontology are ranked under the terms in the upper ontology, e.g., the upper ontology classes are superclasses or supersets of all the classes in the domain ontologies. A number of upper ontologies have been proposed, each with its own proponents. Library classification systems predate upper ontology systems. Though library classifications organize and categorize knowledge using general concepts that are the same across all knowledge domains, neither system is a replac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dullingham Railway Station
Dullingham is a railway station that serves the village of Dullingham in Cambridgeshire, England. It is about north-west of the centre of the village. It is also the nearest railway station to the town of Haverhill in Suffolk, which is about 9 miles away. The station, and all trains serving it, are operated by Greater Anglia. Facilities are a ticket machine, a car park, bicycle storage and a small shelter on the platform by the signal box (on the village side). Originally opened by the Newmarket Railway in 1848 but closed in July 1850 to be reopened in September 1850 when the current route to/from Cambridge was completed the following year and the line east to Chippenham Junction (and thence to and Ipswich) in 1854. Dullingham is a remote passing loop A passing loop (UK usage) or passing siding (North America) (also called a crossing loop, crossing place, refuge loop or, colloquially, a hole) is a place on a single line railway or tramway, often located at or near a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |