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Measure of how much of an antenna's signal is transmitted in one direction
principle of reciprocity, the directivity of an antenna when receiving is equal to its directivity when transmitting. The directivity of an actual antenna can
Directivity
Topics referred to by the same term
directive in Wiktionary, the free dictionary. Directive may refer to: Directive (European Union), a legislative act of the European Union Directive (programming)
Directive
2026 video game
Directive 8020 is a 2026 interactive drama and survival horror video game developed and published by Supermassive Games. It is the fifth game in The Dark
Directive_8020
Spike directivity is a vector that quantifies changes in transient charge density during action potential propagation. The digital-like uniformity of
Spike_directivity
Extent to which an antenna is uniformly excited
maximum directivity of an antenna [aperture] to its standard directivity." It is synonymous with normalized directivity. Standard [reference] directivity is
Illumination_efficiency
Order for the implementation of safety measures on aircraft
An airworthiness directive (commonly abbreviated as AD) is a notification to owners and operators of certified aircraft that a known safety deficiency
Airworthiness_directive
Controversial Israeli military protocol
The Hannibal Directive (Hebrew: נוהל חניבעל, romanized: Nóhal Khanibaál), also translated as Hannibal Procedure or Hannibal Protocol, is the name of a
Hannibal_Directive
Loudspeaker using an acoustic horn
the Radial horn HCD offers a constant directivity on one plane, to be specific a progressive constant directivity on the plane along the horn mouth major
Horn_loudspeaker
Path loss of radio transmitted through air or vacuum
keep directivity constant in the formula, and has nothing to do with propagation in vacuum. Directivity of transmitting antenna - the directivity of transmitting
Free-space_path_loss
Converts an electrical audio signal into a corresponding sound
the directivity of a complex shape, based on modeling combinations of point sources, is usually not possible, but in the far field, the directivity of
Loudspeaker
Radio technology devices
couplers will have the best isolation. Directivity is directly related to isolation. It is defined as: Directivity: D 3 , 4 = − 10 log ( P 4 P 3 ) = −
Power dividers and directional couplers
Power_dividers_and_directional_couplers
Fields of sound which spread less than most transmissions
speaker would be non-directional. The directivity for various source sizes and shapes is given in. The directivity is shown to be a function only of the
Directional_sound
Interpreted server-side scripting language
files into a web page on a web server (see below), using its #include directive. This could commonly be a common piece of code throughout a site, such
Server_Side_Includes
Fictional Starfleet rule in Star Trek
universe of Star Trek, the Prime Directive (also known as "Starfleet General Order 1" and the "non-interference directive") is a guiding principle of Starfleet
Prime_Directive
Topics referred to by the same term
Database Directive (1996) Copyright Duration Directive (1993) Satellite and Cable Directive (1993) Rental Directive (1992) Computer Programs Directive (1991)
Copyright Directive (disambiguation)
Copyright_Directive_(disambiguation)
policy of the first Donald Trump administration comprises six Space Policy Directives and an announced "National Space Strategy" (issued March 28, 2018), representing
Space policy of the first Trump administration
Space_policy_of_the_first_Trump_administration
Language construct that specifies how a compiler should process its input
In computer programming, a directive or pragma (from "pragmatic") is a language construct that specifies how a compiler (or other translator) should process
Directive_(programming)
Telecommunications performance metric
antenna's gain is a key performance parameter which combines the antenna's directivity and radiation efficiency. The term power gain has been deprecated by
Gain_(antenna)
Definition of directional radio frequency power
as antenna gain (in a given direction) as compared with the maximum directivity of a half-wave dipole antenna, it creates a mathematically virtual effective
Effective_radiated_power
Finnish manufacturer of loudspeakers
Genelec Oy is a manufacturer of active loudspeaker systems based in Iisalmi, Finland. It designs and produces products for professional studio recording
Genelec
EU ATEX Directive on workplaces with an explosive atmosphere
The ATEX directives are two of the EU directives describing the minimum safety requirements for workplaces and equipment used in explosive atmospheres
ATEX_directives
European Union directive regarding data protection
Communications Directive 2002/58/EC on Privacy and Electronic Communications, otherwise known as ePrivacy Directive (ePD), is an EU directive on data protection
EPrivacy_Directive
Topics referred to by the same term
Seveso Directive may refer to: Directive 82/501/EC, Seveso Directive I (1982) Directive 96/82/EC, Seveso Directive II (1996) Directive 2012/18/EU, Seveso
Seveso_Directive
2003 European Union directive on hazardous materials
The Restriction of Hazardous Substances Directive 2002/95/EC (RoHS 1), short for Directive on the restriction of the use of certain hazardous substances
RoHS
Radio antenna that sends signals in every direction
gain (G) is defined as antenna efficiency (e) multiplied by antenna directivity (D) which is expressed mathematically as: G = e D {\displaystyle G=eD}
Omnidirectional_antenna
Text file processor instruction to include the content of one file into another
An include directive instructs a text file processor to replace the directive text with the content of a specified file. The act of including may be logical
Include_directive
Formula for calculating signal to noise ratio
Relative directivity factor (RDF) is a figure of merit for radio receiving antennas. It is the antenna gain in the forward direction divided by the gain
Relative_directivity_factor
EU Directive issued in 2004
Transparency Directive, Transparency Obligations Directive or Directive 2004/109/EC is an EU Directive issued in 2004, revising an earlier Directive 2001/34/EC
Transparency_Directive
Formula in telecommunications engineering of antenna performance
idea behind his transmission formula was to dispense with the usage of directivity or gain when describing antenna performance. In their place is the descriptor
Friis_transmission_equation
European Union directive
The Directive (EU) 2022/2555, commonly known as NIS2 is a directive of the European Union aimed at protecting digital infrastructure, in particular critical
NIS2_Directive
Device that transmits and receives radio waves
the radio waves into a beam or other desired radiation pattern. Strong directivity and good transmitting efficiency when transmitting are hard to achieve
Antenna_(radio)
Internet error message
Task Force. sec. 6.5.4. doi:10.17487/RFC7231. RFC 7231. ErrorDocument Directive – instructions on custom error pages for the Apache 2.0 web server 404:
HTTP_404
European environmental law
The Birds Directive (formally known as Council Directive 2009/147/EC on the conservation of wild birds) is the oldest piece of EU legislation on the environment
Birds_Directive
European Union directive
The Ecodesign Directive (Directive 2009/125/EC) of the European Union establishes a framework to set mandatory ecological requirements for energy-using
Ecodesign_Directive
Signal processing technique for sensor arrays
compared with omnidirectional reception/transmission is known as the directivity of the array. Beamforming can be used for radio or sound waves. It has
Beamforming
Legal document
An advance healthcare directive, also known as living will, personal directive, advance directive, medical directive or advance decision, is a document
Advance_healthcare_directive
EU regulation on information privacy
regulations for international business. It supersedes the Data Protection Directive 95/46/EC and, among other things, simplifies the terminology. The European
General Data Protection Regulation
General_Data_Protection_Regulation
Type of loudspeaker
in the horn flare. The horn flare controls the coverage pattern, or directivity, and as an acoustic transformer, adds gain. A professional horn and compression
Tweeter
Allied bombing campaign against German aircraft production during World War 2
The Pointblank directive authorised the initiation of Operation Pointblank, the code name for the part of the Allied Combined Bomber Offensive intended
Pointblank_directive
Directional variation in strength of radio waves
side lobe level should be minimum, it is necessary to have the maximum directivity. Antenna modeling E-plane and H-plane Vertical and horizontal (radio
Radiation_pattern
Legislative act of the European Union
A directive is a legal act of the European Union which requires member states to achieve particular goals without dictating how the member states achieve
Directive_(European_Union)
Low-level programming language family
per machine code instruction (1:1), but constants, comments, assembler directives, symbolic labels of, e.g., memory locations, registers, and macros are
Assembly_language
EU-wide goods and services tax policy
issuing the Sixth Directive to provide a uniform basis of assessment and replacing the Second Directive promulgated in 1967. The Sixth Directive defined a taxable
European Union value added tax
European_Union_value_added_tax
Product providing additional nutrients
safety and effectiveness. The European Union's (EU) Food Supplements Directive of 2002 requires that supplements be demonstrated to be safe, both in
Dietary_supplement
Topics referred to by the same term
Framework directives of the European Union: Directive 89/391/EEC of 1989 to encourage improvements in the safety and health of workers Directive 2000/60/EC
Framework_Directive
Lobes of far field radiation pattern of antenna
distribution, as provided in the two examples above, gives the maximum possible directivity for a given aperture size, but it also produces the maximum sidelobe
Sidelobes
European Union law
The Transfers of Undertakings Directive 2001/23/EC is a European Union law that protects the contracts of employment of people working in businesses that
Transfers of Undertakings Directive 2001
Transfers_of_Undertakings_Directive_2001
EU directive on personal data processing
The Data Protection Directive, officially Directive 95/46/EC, enacted in October 1995, was a European Union directive which regulated the processing of
Data_Protection_Directive
regulations, which are automatically enforceable in all member states; directives, which typically become effective by transposition into national law;
Law_of_the_European_Union
American audio equipment manufacturer
from two channel sources. In 1978, Electro-Voice patented its Constant Directivity Horn, which produced an even balance of frequencies across the listening
Electro-Voice
The Takeover Directive 2004/25/EC is an EU Directive dealing with European company law's treatment of mergers and acquisitions. It concerns the standards
Takeover_Directive
CC-inspired CCJP
The Directive 96/9/EC of the European Parliament and of the Council of 11 March 1996 on the legal protection of databases is a directive of the European
Database_Directive
European Union directive concerning machinery
The Machinery Directive, Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 is a European Union directive concerning machinery
Machinery_Directive
Highest court of jurisdiction in the U.S
provision of the Constitution. It is also able to strike down presidential directives for violating either the Constitution or statutory law. Under Article
Supreme Court of the United States
Supreme_Court_of_the_United_States
Directive 2004/48/EC of the European Parliament and of the Council of 29 April 2004 on the enforcement of intellectual property rights (also known as
Enforcement_Directive
Radio antenna which has greater performance in specific alignments
antenna when used as a receiving antenna. As a consequence of their directivity, directional antennas also send less (and receive less) signal from directions
Directional_antenna
Post-WWII order issued by Allied Occupation Authorities
The Shinto Directive was an order issued in 1945 to the Japanese government by Occupation authorities to abolish state support for the Shinto religion
Shinto_Directive
21st episode of the 4th season of Star Trek: Voyager
"The Omega Directive" is the 89th episode of the American science fiction television series Star Trek: Voyager airing on the UPN network. It is the 21st
The_Omega_Directive
Payment order for a prepaid amount of money
A money order is a directive to pay a pre-specified amount of money from prepaid funds, making it a more trusted method of payment than a cheque. Systems
Money_order
Telecommunications performance metric
illumination efficiency, which relates the maximum directivity of an antenna/aperture to its standard directivity. Radiation efficiency is defined as "The ratio
Radiation_efficiency
Adolf Hitler's directives, or Führer directives (German: Führerbefehle), were instructions and strategic plans issued by Adolf Hitler himself over the
Adolf_Hitler's_directives
Curves on which differential equations are zero
though with the name 'directivity curve', was used in a 1967 article by Endre Simonyi. This article also defined 'directivity vector' as w = s i g n
Nullcline
EU directive on the protection of groundwater against pollution and deterioration
The Groundwater Directive (GWD; full title: Directive 2006/118/EC of the European Parliament and of the Council of 12 December 2006 on the protection
Groundwater_Directive
Web security vulnerability
header works by defining a directive on how to interpret the body of the HTTP request, with the common and necessary directive for this attack being the
HTTP_request_smuggling
The European Union (EU) proposal for a directive on criminal measures aimed at ensuring the enforcement of intellectual property rights (2005/0127/COD)
Proposed_directive_on_criminal_measures_aimed_at_ensuring_the_enforcement_of_intellectual_property_rights
European Union regulation
The Directive 2006/66/EC of the European Parliament and of the Council of 6 September 2006 on batteries and accumulators and waste batteries and accumulators
Battery_Directive
Military goal of Operation Barbarossa
English Wikisource has original text related to this article: Führer Directive 21 The Arkhangelsk–Astrakhan line, or A–A line for short, was the military
A–A_line
Protected area in the European Union under the Habitats Directive
(SAC) is defined in the European Union's Habitats Directive (92/43/EEC), also known as the Directive on the Conservation of Natural Habitats and of Wild
Special_Area_of_Conservation
On July 6, 1950, Robert Menzies, Australian Prime Minister, issued a Directive titled the Charter of the Australian Security Intelligence Organization
Charter of the Australian Security Intelligence Organization
Charter_of_the_Australian_Security_Intelligence_Organization
Standardised phrases specifying risks associated with substances
R-phrases (short for risk phrases) are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances
List_of_R-phrases
Loudspeaker technology
low-frequency performance of a traditional loudspeaker, but with a wider directivity and shallower profile, as well as the mid-range and high-frequency performance
Distributed_mode_loudspeaker
Toxic mercury cation
"priority hazardous substance" according to the Directive on Environmental Quality Standards (Directive 2013/39/EU). The process which creates methylmercury
Methylmercury
System configuration file for DOS and OS/2
applications. Each line can contain a name-value pair that is either a directive that sets the value of a system setting or with name "DEVICE" extends
CONFIG.SYS
German Nazi leader of the SS (1900–1945)
Bolshevik intelligentsia and leadership. His special directive, the "Guidelines in Special Spheres re Directive No. 21 (Operation Barbarossa)", read: "In the
Heinrich_Himmler
Directional audio recording instrument
typical parabolic microphone dish with a diameter of one metre has little directivity for sound waves longer than 30 cm, corresponding to frequencies below
Parabolic_microphone
Novel by Robert Ludlum
The Janson Directive is a novel by Robert Ludlum. The posthumous novel was published in 2002, a year after Ludlum's death. Paul Janson is an ex-Navy SEAL
The_Janson_Directive
Legal declaration where a person distributes property at death
doctrine Estate administration Estate planning Testator Probate Power of appointment Inheritance tax Related topics Advance directive (Living will) v t e
Will_and_testament
Topics referred to by the same term
Directive 51 may refer to: Directive 51 (novel) by John Barnes George W. Bush's National Security and Homeland Security Presidential Directive 51 This
Directive_51
Linguistic modality expressing how the world should be
threat; alethic logic or temporal logic would apply): "I shall help you." Directive modality (commands, requests, etc.; deontic logic would apply): "Come
Deontic_modality
Directive 2001/42/EC is a European Union Directive in the field of environmental protection, evaluating all those plans and programmes which can produce
Directive_2001/42/EC
Head of state and government of the United States
executive orders, decrees, memorandums, proclamations, national security directives and legislative signing statements—that already allow presidents to enact
President of the United States
President_of_the_United_States
Type of radio antenna
noise coming from the same direction. Directivity increases with the length of the antenna. Useful directivity begins to develop at a length of only 1/
Beverage_antenna
The Clinical Trials Directive (officially Directive 2001/20/EC of 4 April 2001, of the European Parliament and of the Council on the approximation of
Clinical_Trials_Directive
Mark (℮) to declare approximate contents
European Union (EU). Its use declares that the prepackage fulfils EU Directive 76/211/EEC, which specifies the maximum permitted tolerances in package
Estimated_sign
Post-World War II demilitarization plan for Germany
significantly reducing German industrial might". JCS-1067, the April 1945 "Directive to Commander-in-Chief of United States Forces of Occupation Regarding
Morgenthau_Plan
2019 EU copyright reform directive
The Directive on Copyright in the Digital Single Market, formally the Directive (EU) 2019/790 of the European Parliament and of the Council of 17 April
Directive on Copyright in the Digital Single Market
Directive_on_Copyright_in_the_Digital_Single_Market
European Union law aiming at establishing a single market for services
The Bolkestein directive or Services Directive, officially Services in the Internal Market Directive 2006/123/EC, is a European Union law aiming at establishing
Bolkestein_directive
Howling caused by a circular path in an audio system
Additionally, the loudspeakers and microphones should have non-uniform directivity and should stay out of the maximum sensitivity of each other, ideally
Audio_feedback
General-purpose programming language
to work on a variety of data, along with a small set of new compiler directives to allow access to the information about those types using reflection
Zig_(programming_language)
1987 film by Paul Verhoeven
with three prime directives: Serve the public trust, protect the innocent, and uphold the law. A fourth prime directive, Directive 4, is classified.
RoboCop
Floods Directive (Directive 2007/60/EC) is legislation in the European Parliament on the assessment and management of flood risks. The floods directive basically
Floods_Directive
Instruction or statement by the US president
In the United States, a presidential directive, or executive action, is a written or oral instruction or declaration issued by the president of the United
Presidential_directive
Topics referred to by the same term
US law regulating the hunting and capture of birds Birds Directive, a European Union directive on the protection of wild birds and their habitats An area
Bird_law
1996 video game
The Pandora Directive is the fourth installment in the Tex Murphy series of graphic adventure games produced by Access Software. After its creators reacquired
The_Pandora_Directive
The European Union Savings Directive (EUSD), formally Council Directive 2003/48/EC of 3 June 2003 on taxation of savings income in the form of interest
Savings_Directive
European Union directive mandating a universal charging standard
Directive (EU) 2022/2380 is a directive of the European Parliament and the European Council which was formally adopted on 23 November 2022 amending Radio
Radio Equipment Directive (2022)
Radio_Equipment_Directive_(2022)
within the framework of: Directive 98/24/EC, the chemical agents directive; and Directive 90/394/EEC, the carcinogens at work directive. It is composed of scientists
Scientific Committee on Occupational Exposure Limit Values
Scientific_Committee_on_Occupational_Exposure_Limit_Values
Device that converts sound into an electrical signal
ratio, producing nulls at 109.5°. This ratio maximizes the directivity factor (or directivity index). A supercardioid microphone is similar to a hypercardioid
Microphone
Book by Avicenna
Al-Isharat wa’l-tanbihat (Arabic: الإشارات والتنبيهات, "The Book of Directives and Remarks") is apparently one of the last books of Avicenna which is written
Al-Isharat_wa_al-Tanbihat
Islamic period of waiting for widows
the ‘iddah lasts until she gives birth. Islamic scholars consider this directive to be a balance between mourning of husband's death and protecting the
Iddah
DIRECTIVITY
DIRECTIVITY
DIRECTIVITY
DIRECTIVITY
Boy/Male
Indian
The gatherer
Boy/Male
Hindu
Ornament, Decoration
Boy/Male
Hindu, Indian
Big
Boy/Male
Hindu, Indian
Sri Krishna
Surname or Lastname
English
English : variant spelling of Furness.
Boy/Male
Arabic
Worshippers; Adorers
Girl/Female
Hindu, Indian
Beholding; Viewing; A Form of the Name Preksha
Boy/Male
Hindu, Indian
A Season
Boy/Male
Assamese, Celebrity, Gujarati, Hindu, Indian, Jain, Kannada, Malayalam, Marathi, Oriya, Punjabi, Sanskrit, Sikh, Tamil, Telugu, Traditional
Sky; Lord of Day; Uncountable; Space
Boy/Male
Arabic, French, Hindu, Indian, Muslim, Sindhi
Pure; Chaste; Honest; Virtuous
DIRECTIVITY
DIRECTIVITY
DIRECTIVITY
DIRECTIVITY
DIRECTIVITY