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About 10,000 papers for “Communication source”

Communication source

Behaviour Change Intervention Ontology (BCIO) · Definitions · 2024

Definition:A that originates a communication.This definition was imported from the Behaviour Change Intervention Ontology (see https://bciosearch.org/).Comments and suggestions for improvements are welcome using the Qeios review system.Definitions imported from the Behaviour Change Intervention Ontology (BCIO) are what are known as 'ontological definitions'.See this article in Qeios for an explanation https://

Cited by 0Open access

Communication Source

Biblioteca de la Universidad de Málaga · Repositorio Institucional de la Universidad de Málaga (University of Málaga) · 2018

Dentro de las Ciencias de la Comunicación, una de las bases de datos más importante y completa es Communication Source. Esta base de datos se desarrolla a partir de la fusión de Communication and Mass Media Complete y Communication Abstracts. Ofrece resúmenes e índices, así como contenido completo de publicaciones internacionales pertenecientes a los campos de la comunicación, la lingüística, la retórica y la oratoria, los estudios de medios y otras áreas relevantes, dando cobertura a más de 850 títulos, de los cuales cerca de 500 están a texto completo. Ofrece además un sofisticado Tesauro, y como novedad incluye también más de 5.500 perfiles de autores.

Cited by 0Open access

COMMUNICATION SYSTEMS Source

2013

Closely follow text – Chapters 1-7 with some outside examples Time permitting, limited coverage Chapters 8-9 Performance Evaluation: (Temporary until Grader situation is finalized.) 1. 2 Midterms (Dates and Percentages will be decided in class by consensus.) 2. Final (40 % if no TA; 35 % if there is a TA to grade the assignments) 3. Homeworks. (If there is a TA for the course, percentage will be decided in class by consensus.) These lecture notes are prepared by Hüseyin Abut for Leon-Garcia text, August 20061

Cited by 0

Optical communication signal source

BLOCK, TIMOTHY R., HEILING, GERALD M., KARST, DENNIS L. et al. · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1990

An optical communication signal source package and assembly for coupling optical signals to the end of an optical fiber includes first and second semiconductor laser diodes capable of being operated in a redundant fashion for increased reliability or to provide wavelength division multiplexing for increases in bandwidth and information carrying capability. The laser diodes are supported with their mounting flanges in a common plane and are oriented to provide parallel beams of polarized light having perpendicular E-field vectors. A connector carried by the support positions the optical fiber at the target area where an optics system focuses the light beams. An optical coupling device such as a polarizing beam splitter or a holographic beam separator is responsive to the orthogonal light beams to direct both light beams toward the optical fiber with minimum decrease in amplitude. The package includes no moving parts or highly frequency selective components. The package is employed in a compact communication signal coupling assembly permitting short electrical lead lengths and high circuit density.

Cited by 0

Source authentication in group communication

Mohamed Al-Ibrahim · Figshare · 2007

Multicast is a relatively new and emerging communication mode in which a sender sends a message to a group of recipients in just one connection establishment... reducing broadband overhead and increasing resource utilization in the already congested and contented network... The focus of the research in this area has been in two directions: first, building an efficient routing infrastructure, and secondly, building a sophisticated security infrastructure. The focus of this work is on the second issue. An ideal authenticated multicast environment ... provides authenticity for all the communication operations in the system... We ... propose a comprehensive solution to the problem ... for all its possible operations... 1. one-to-one (or joining mode) 2. one-to-many (or broadcast mode) 3. many-to-one (or concast mode) 4. intermediate (or transit mode) ... We study the ... mode known as anycast, in which a server is selected from a group of servers. Further we develop ... schemes for group-based communication exploiting the distinct features of one-time signatures... cover situations when a threshold number of participants are involved and ... where a proxy signer is required.

Cited by 1Open access

Source Credibility in Marketing Communication

Martin Eisend · Marketing ZFP · 2006

Marketing ZFP is a platform for the academic dialog between marketing science and marketing practice. It offers critical depictions of the newest developments in the central areas of marketing science and marketing practice. Thereby, Marketing ZFP dedicates itself particularly to the transfer of methodological knowledge into practice.

Cited by 18Open access

Source coding for communication concentrators

Pierre Amedee Humblet, N Abramson, F Kuo et al. · DSpace@MIT (Massachusetts Institute of Technology) · 1978

Originally presented as the author's thesis, (Ph.D.) in the M.I.T. Dept. of Electrical Engineering and Computer Science, 1978.

Cited by 0Open access

Distributed Source Simulation With No Communication

Tomer Berg, Ofer Shayevitz, Young-Han Kim et al. · IEEE Transactions on Information Theory · 2020

We consider the problem of distributed source simulation with no communication, in which Alice and Bob observe sequences <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$U^{n}$ </tex-math></inline-formula> and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$V^{n}$ </tex-math></inline-formula> respectively, drawn from a joint distribution <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$p_{UV}^ {\otimes n}$ </tex-math></inline-formula> , and wish to locally generate sequences <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$X^{n}$ </tex-math></inline-formula> and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$Y^{n}$ </tex-math></inline-formula> respectively with a joint distribution that is close (in KL divergence) to <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$p_{XY}^ {\otimes n}$ </tex-math></inline-formula> . We provide a single-letter condition under which such a simulation is asymptotically possible with a vanishing KL divergence. Our condition is nontrivial only in the case where the Gàcs-Körner (GK) common information between <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$U$ </tex-math></inline-formula> and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$V$ </tex-math></inline-formula> is nonzero, and we conjecture that only scalar Markov chains <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$X-U-V-Y$ </tex-math></inline-formula> can be simulated otherwise. Motivated by this conjecture, we further examine the case where both <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$p_{UV}$ </tex-math></inline-formula> and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$p_{XY}$ </tex-math></inline-formula> are doubly symmetric binary sources with parameters <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$p,q\leq 1/2$ </tex-math></inline-formula> respectively. While it is trivial that in this case <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$p\leq q$ </tex-math></inline-formula> is both necessary and sufficient, we use Fourier analytic tools to show that when <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$p$ </tex-math></inline-formula> is close to <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$q$ </tex-math></inline-formula> then any successful simulation is close to being scalar in the total variation sense.

Cited by 2

The Information Source and Communication Channel

R.F.W. Coates · 1982

In its most basic form, a communication system consists of an information source and an information sink connected by a channel. Often, the information-bearing waveform is of a nature which makes it incompatible with effective transmission through a given channel. Then the complementary operations of modulation and demodulation are invoked to yield a signal that is compatible with effective transmission.

Cited by 1

Optical communication system source-detector pair

- · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1977

1466486 Light guide termination with source and detector CORNING GLASS WORKS 3 Jan 1975 [7 Jan 1974] 179/75 Heading G1A Such a termination, arranged to be positioned in axial alignment with the end of waveguide bundle 10, comprises optical mixer 18 with face 16 adjacent said end and a solid state detector 34 near a second face 20 edge-emitting solid state light source 32 on the side of detector 34 away from mixer 18 and reflecting surface 48 so disposed as to reflect light from source 32 to face 20. Ferrule 12 of say brass or glass maintains the ends of waveguides 11 in parallel alignment and has similar grinding characteristics to them, Rod 18 is preferably cylindrical with its ends perpendicular to its axis and clad with layer 22 of lower refractive index. Support member 24 is secured to ferrule 12 by means 26. Contact 36 supported by housing 38 serves as heat sink for double heterojunction LOC laser diode 32 operating below the lasing threshold as an incoherent emitter. Flying lead 40 is the other connection. Electrical connection to p-i-n or avalanche photo- diode 34 is by beam lead 42 and flying lead 44. All leads are insulated. Parabolic surface 48 which collimates the light from source 32 is formed by depositing silver, or chromium, or surface 46 is polished. Detector 34 is held by adhesive filling 54 of silicon fluid or ethyl-cyanacrylate epoxy or methyl siloxane. In the embodiment of Fig. 2 (not shown), the surface of adhesive filling is flat and contacts the second end face of rod (18'), the reflecting surface is conical and the detector is mounted on an insulating layer on source 32. The adhesive filling may be omitted and the mixer rod end disposed on the detector.

Cited by 0

Communication Source: Guía de uso (2022)

Biblioteca de la Universidad de Málaga · Repositorio Institucional de la Universidad de Málaga (University of Málaga) · 2022

Esta base de datos ofrece resúmenes e índices, así como contenido completo de publicaciones internacionales pertenecientes a los campos de la comunicación, la lingüística, la retórica y la oratoria, los estudios de medios y otras áreas relevantes, dando cobertura a más de 850 títulos, de los cuales cerca de 500 están a texto completo. Ofrece además un sofisticado Tesauro, y como novedad incluye también más de 5.500 perfiles de autores.

Cited by 0Open access

Art: A Source of Visual Communication

Farah Khan · International Journal of Multidisciplinary and Current Research · 2018

Art is a fundamental part of human life. The language of art is the most powerful language one can understand beyond the barriers of communication, art provides an open forum for expressiveness. Since pre-historic time it has been observed as a mechanism of communication with each other. It has been analyzed that people throughout history used it for expressing their thoughts, beliefs, philosophies, fears and spiritual connections. Artists from all regions of the world have documented their voice through this medium of expression while focusing on the contemporary issues concerning their own time. In the contemporary age, art is observed as the most powerful tool for voicing the inward experiences of the artist. It is also being utilized for responding back to the society. Artists are free to express what they perceive individually and in what way they want the masses to conceive out of it. They are raising questions and analyzing the political and social scenario in their own visual idiom. In this manner, Pakistani artists are equally participating in raising their voice in visual form to communicate their experiences and challenges they are facing in the contemporary world. They are also providing answers to the prevailing chaos (globally and especially in Pakistan).

Cited by 2Open access

Signal source optimization of visible light communication for communication equality

Yun Liu, Shangsheng Wen, Canyu Xie et al. · Optical Engineering · 2018

Square and circular light source layouts conventionally employed in visible light communication (VLC) systems suffer from communication blind spots and received signal nonuniformity as well as from large power fluctuations in the middle of the room. To address these shortcomings, we use the cross square and annulus layouts in conjunction with the cross-fertilize particle swarm optimization algorithm to improve VLC system performance. The distribution of the unit area received power (RPUA), the distribution of the signal-to-noise ratio (SNR), and the bit error rate (BER) performance were simulated and the rationality of the algorithm was compared. The results show that after optimization, the RPUA fluctuation value of the cross square layout decreases from 2.32 to 1.59 dB / m2, the SNR fluctuation value reduces from 8.5 to 4.2 dB, and the RPUA fluctuation value of the annulus layout decreases from 4.69 to 3.46 dB / m2, the SNR fluctuation value decreases from 13.3 to 8.8 dB. The RPUA value of cross-square layout fluctuates between −1.5 and −0.5 dB / m2, and the receiving area accounts for 93.4% in this range while in the case of the square layout, this area is only 86.7%. Therefore, it suggests that this scheme is reasonable for the equality of communication quality and system performance heightens greatly.

Cited by 6