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Enregistrement W4253757573 · doi:10.1093/obo/9780199756841-0146

Cable Television

2014· reference-entry· en· W4253757573 sur OpenAlexaboutno aff
Megan Mullen

Notice bibliographique

Revuenon disponible
Typereference-entry
Langueen
DomaineEngineering
ThématiqueICT Impact and Policies
Établissements canadiensnon disponible
Organismes subventionnairesnon disponible
Mots-clésEntertainmentCable televisionTelecommunicationsGovernment (linguistics)Digital cableBroadcast lawAdvertisingCommercial broadcastingBusinessEngineeringPolitical scienceLawPublic broadcasting

Résumé

récupéré en direct d'OpenAlex

In the United States, cable television refers to both a category of televised entertainment and information programming and the technological means of delivering that programming. In existence for over a half century, cable television has gone through a number of transformations—with regard to its uses, content, industry structure, and regulatory framework. Cable, at first known as community antenna television or CATV, was begun in the late 1940s and early 1950s as a means of redistributing broadcast television signals to small towns that were either too far from the stations originating those signals to receive them over the air, using set-top or even rooftop antennas, or were blocked from receiving the signals by mountains or other obstructions. Local entrepreneurs built very tall receiving towers and relayed the signals gathered there to local “subscribers” via wire for a monthly fee. It was not long before the CATV entrepreneurs came together to form a trade association and to share innovations and know-how. In the decades since, the cable industry (as it became known in the late 1960s) has faced a shifting and uncertain government policy climate. At first, cable was perceived as a threat to the broadcast television industry, both because of its ability to bypass nearby signals to retransmit the signals of better funded stations from larger markets and because some broadcasters claimed that cable systems were unfairly making money from programming that they themselves had paid for the rights to air. By the early 1970s, most of these concerns had abated, and by that point some very utopian expectations had instead been placed on the cable industry—nothing short of making up for the perceived public service failures of the commercial broadcast television system. This was known as the “blue sky” era. What actually emerged, during the late 1970s and early 1980s, were a number of satellite-delivered cable programming networks. These have not exactly addressed the utopian dreams of blue sky. However they eventually came to represent a range of programming niches that generally adhere to established broadcast program genres, which is not surprising given that they generally follow the same commercial imperatives as broadcast television. What is now known as cable television has the appeal to reach many more US households than it once did, even while still serving its initial retransmission function. These days cable itself competes with some very similar multichannel delivery technologies, including direct broadcast satellite, IPTV (high-speed Internet), and others. While these technologies, including cable itself, now are available globally, their existence is due to a range of political, economic, and cultural circumstances—most differing from those that allowed cable television to develop as it did in the United States (and in a somewhat different way in Canada).

Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.

Comment cette classification a été obtenuedéplier

Prédiction machine sur la base complète

Imitation des enseignants

Ni prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.

score de la tête « metaresearch » (Codex)0,001
score de la tête « metaresearch » (Gemma)0,003
Version: metacan-v3-hybrid-931329e0061cStatut de validation: machine_predicted_unvalidated
Catégories candidatesCharge utile insuffisante (le modèle a refusé de juger)
Catégories consensuellesaucune
DomaineSignal candidat: aucune · Signal consensuel: aucune
Devis d'étudeSignal candidat: Sans objet · Signal consensuel: Sans objet
GenreSignal candidat: Autre · Signal consensuel: Autre
Score de désaccord entre enseignants0,480
Score d'incertitude au seuil0,742

Scores du classifieur distillé par catégorie (deux têtes)

CatégorieCodexGemma
Métarecherche0,0010,003
Méta-épidémiologie (sens strict)0,0010,000
Méta-épidémiologie (sens large)0,0000,000
Bibliométrie0,0020,004
Études des sciences et des technologies0,0020,001
Communication savante0,0060,005
Science ouverte0,0010,003
Intégrité de la recherche0,0020,002
Charge utile insuffisante (le modèle a refusé de juger)0,4800,277

Scores machine (provisoires)

Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.

Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.

Tête enseignante Opus0,015
Tête enseignante GPT0,243
Écart entre enseignants0,227 · la distance entre les deux têtes enseignantes sur ce seul travail
Statut de validationscore_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle

Classification

machine, non validée

Prédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.

Devis d'étudeSans objet
Domainenon disponible
GenreAutre

Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».

En bref

Citations0
Publié2014
Routes d'admission1
Résumé présentoui

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