17-letter words containing d, e, r, i, v
- activation record — (compiler) (Or "data frame", "stack frame") A data structure containing the variables belonging to one particular scope (e.g. a procedure body), as well as links to other activation records. Activation records are usually created (on the stack) on entry to a block and destroyed on exit. If a procedure or function may be returned as a result, stored in a variable and used in an outer scope then its activation record must be stored in a heap so that its variables still exist when it is used. Variables in the current scope are accessed via the frame pointer which points to the current activation record. Variables in an outer scope are accessed by following chains of links between activation records. There are two kinds of link - the static link and the dynamic link.
- active ingredient — the part of a substance or compound that produces its chemical or biological effect
- adaptive learning — (algorithm) (Or "Hebbian learning") Learning where a system programs itself by adjusting weights or strengths until it produces the desired output.
- adjective pronoun — a pronoun used as an adjective, as his in His dinner is ready.
- advance directive — a living will or durable power of attorney in which a person states his or her wishes regarding medical treatment in the event of mental incompetency or an inability to communicate.
- adventure holiday — a holiday that involves some physically challenging activity such as canoeing, rock climbing, etc
- adventure tourism — tourism involving activities that are physically challenging
- adverse selection — Adverse selection is a term used to describe the tendency of those in dangerous jobs or with high-risk lifestyles to want to take out life insurance.
- affiliative drive — the urge to form friendships and attachments, typically prompting a person to attend social gatherings and join organizations as a way of preventing loneliness and gaining emotional security.
- average deviation — a measure of dispersion, computed by taking the arithmetic mean of the absolute values of the deviations of the functional values from some central value, usually the mean or median.
- bill of adventure — a certificate made out by a merchant to show that goods handled by him and his agents are the property of another party at whose risk the dealing is done
- blue-headed vireo — solitary vireo.
- breakdown service — a service that provides assistance to motorists who break down
- brezhnev doctrine — the doctrine expounded by Leonid Brezhnev in November 1968 affirming the right of the Soviet Union to intervene in the affairs of Communist countries to strengthen Communism.
- brighton and hove — a city and unitary authority in S England, in East Sussex. Pop: 251 500 (2003 est). Area: 72 sq km (28 sq miles)
- broadview heights — a town in N Ohio.
- cantilever bridge — a bridge having spans that are constructed as cantilevers and often a suspended span or spans, each end of which rests on one end of a cantilever span
- chancery division — (in England) the Lord Chancellor's court, now a division of the High Court of Justice
- code of behaviour — the generally accepted rules governing how people behave
- compound interval — an interval that is greater than an octave, as a ninth or a thirteenth.
- contradistinctive — distinction by opposition or contrast: plants and animals in contradistinction to humans.
- counterproductive — Something that is counterproductive achieves the opposite result from the one that you want to achieve.
- creme de violette — a liqueur flavored with vanilla extract and the essential oils of violets.
- dangerous driving — the act of driving a motor vehicle in a manner that falls far below that expected of a competent and careful driver and hence puts the life of the driver and the lives of other road users at risk
- data service unit — (communications) (DSU or "data service unit") A device used in digital transmission for connecting a CSU (Channel Service Unit) to Data Terminal Equipment (a terminal or computer), in the same way that a modem is used for connection to an analogue medium. A DSU provides a standard interface to a user's terminal which is compatible with modems and handles such functions as signal translation, regeneration, reformatting, and timing. The transmitting portion of the DSU processeses the customers' signal into bipolar pulses suitable for transmission over the digital facility. The receiving portion of the DSU is used both to extract timing information and to regenerate mark and space information from the received bipolar signal.
- david copperfield — a novel (1850) by Charles Dickens.
- deliver the goods — to produce or perform something promised or expected
- demonstrativeness — The state or quality of being demonstrative.
- denial of service — a deliberate interruption in access to a computer system or network, esp by using multiple computers to generate an unmanageable volume of traffic (distributed denial of service)
- denial-of-service — pertaining to or being an incident in which a computer or computer network is disabled, disrupting access or service: a website hit by a denial-of-service attack; unintentional denial-of-service problems.
- designated driver — The designated driver in a group of people travelling together is the one who has agreed to drive, or who is insured to drive.
- dietrich von bern — Theodoric of Verona: the name of the eastern Gothic emperor Theodoric as it appears in German legends.
- directory service — (database, networking) A structured repository of information on people and resources within an organisation, facilitating management and communication. On a LAN or WAN the directory service identifies all aspects of the network including users, software, hardware, and the various rights and policies assigned to each. As a result applications can access information without knowing where a particular resource is physically located, and users interact oblivious to the network topology and protocols. To allow heterogeneous networks to share directory information the ITU proposed a common structure called X.500. However, its complexity and lack of seamless Internet support led to the development of Lightweight Directory Access Protocol (LDAP) which has continued to evolve under the aegis of the IETF. Despite its name LDAP is too closely linked to X.500 to be "lightweight".
- disaster recovery — (business) (DR) Planning and implementation of procedures and facilities for use when essential systems are not available for a period long enough to have a significant impact on the business, e.g. when the head office is blown up. Disasters include natural: fire, flood, lightning, hurricane; hardware: power failure, component failure, head crash; software failure: bugs, resources; vandalism: arson, bombing, cracking, theft; data corruption or loss: human error, media failure; communications: computer network equipment, network storm, telephones; security: passwords compromised, computer virus; legal: change in legislation; personnel: unavailability of essential staff, industrial action. Companies need to plan for disaster: before: risk analysis, preventive measures, training; during: how should staff and systems respond; after: recovery measures, post mortem analysis. Hardware can usually be replaced and is usually insured. Software and data needs to be backed up off site. Alternative communication systems should be arranged in case of network failure or inaccessible premises, e.g. emergency telephone number, home working, alternative data center.
- discrete variable — a variable that may assume only a countable, and usually finite, number of values.
- dispersive medium — a substance in which waves of different frequencies travel at different speeds
- disruptive action — action performed by protestors, workers, etc that causes the disruption of a service
- dissolve in tears — weep
- drink-drive limit — the maximum blood alcohol level permitted for someone driving a vehicle
- drive to the wall — to force into an awkward situation
- drive up the wall — to cause to become crazy or furious
- drive-by download — an incidence of an unwanted program being automatically downloaded to a computer, often without the user's knowledge
- drive-by shooting — an incident in which a person, building, or vehicle is shot at by someone in a moving vehicle
- employer-provided — Employer-provided insurance is arranged or funded by the organization for which the policyholder works.
- financial adviser — A financial adviser is someone whose job it is to advise people about financial products and services.
- five-spice powder — a mixture of spices used especially in Chinese cooking, usually including cinnamon, cloves, fennel seed, pepper, and star anise.
- floppy disk drive — disk drive
- forced convection — Forced convection is convection in which the movement of fluid does not happen naturally but is helped by a device such as a fan or pump.
- forensic evidence — evidence obtained by the use of science, for example DNA evidence, etc
- front-wheel drive — a drive system in which engine power is transmitted through the front wheels only.
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