Discrete-state and fluid stochastic petri net models for open-loop video-on-demand systems:a comparative case study

2004 ◽  
Author(s):  
A. Heindl ◽  
E.W. Biersack
Keyword(s):  
Petri Net ◽  
Video On Demand ◽  
Open Loop ◽  
Comparative Case Study ◽  
Discrete State ◽  
Stochastic Petri Net ◽  
On Demand

The Myth of Televisual Ubiquity

2016 ◽  
Vol 17 (8) ◽  
pp. 691-705 ◽  
Author(s):  
Mark Stewart
Keyword(s):  
New Zealand ◽  
Video On Demand ◽  
On Demand ◽  
National Borders

Popular and journalistic discussions of television often present a rhetoric, which suggests that television has become ubiquitous, any content being able to be watched anytime, anywhere. This article argues that this represents a myth of televisual ubiquity, which neglects the role still played by national borders and which makes assumptions about the types of television of interest to people. By accepting the myth of televisual ubiquity, we are making assertions about the television experience of some viewers over others, as well as creating a distinction of which television can be seen to have lasting importance. The article analyzes the components of the myth of televisual ubiquity and draws them together to consider a case study, video on demand in New Zealand.

scholarly journals ‘If you can’t beat them, be them’

2021 ◽  
Vol 37 (70) ◽  
pp. 050-065
Author(s):  
Tim Raats ◽  
Tom Evens
Keyword(s):  
Joint Venture ◽  
Video On Demand ◽  
The Political ◽  
Competitive Advantages ◽  
On Demand ◽  
Small Market ◽  
Media Markets ◽  
Streaming Services ◽  
Market Factors

Faced with heavy competition of global subscription-video-on-demand (SVOD) streaming services, along with increased pressure on fi nancing and distribution of domestic content, legacy media players are increasingly exploring the potential of local SVOD services as domestic alternatives to global platforms such as Netflix and Disney+, often in collaboration with other European broadcasters and/or distributors.This article presents an in-depth case study of Streamz, a domestic SVOD alternative launched in Belgium in September 2020. Building on scholarly work on media disruption and platform power, the case study examines the political and market context that shaped the existence of the platform, and critically analyses the strategies pursued by legacy media players in attempting to develop and emulate key competitive advantages of global SVOD players. The article demonstrates how a persistent policy push to collaborate in a small market resulted in an unusual joint venture and, at the same time, how diff erent market factors, most of them characteristic for small media markets, pose signifi cant challenges for domestic players to develop a profi table platform in Europe, let alone be able to stand achance in a highly competitive streaming market.

Built Environmental Variations Between Regular and Imax Theatres

2018 ◽  
Vol 43 (4) ◽  
pp. 41-51
Author(s):  
Chen Wang ◽  
Heng Li
Keyword(s):  
Questionnaire Survey ◽  
Video On Demand ◽  
Projection Methods ◽  
Sound System ◽  
On Demand ◽  
Environmental Variations ◽  
Declining Attendance

The movie substitutes such as home cinema, video on demand (VOD), and plasma televisions leaded to a declining attendance of patrons to movie theatres, which urged the invention of IMAX theatre to call movie lovers back to cinemas. Many cinemas plan to renovate their regular digital theatre auditoriums into IMAX theatre auditoriums, but there lack of study for built environmental variations between regular and IMAX theatres. Through the combination of a questionnaire survey and a case study on a leading cinema company in Malaysia, the Tanjong Golden Village Cinemas (TGV), this paper aims to identify the structural and architectural differences between regular digital theatre auditorium and IMAX theatre auditorium in the perspectives of acoustic and visual experiences. The most significant factor influencing the satisfaction of visualization in IMAX is “immersive of picture” followed by “sharpness of colour” and “feels as part of the picture”. The most significant indicators for audio experience in IMAX is “direction of object”, which enable an audience to trace the direction and position of an object on the screen without looking at it. The built environmental variations between regular and IMAX theatres in terms of screen, camera and projection methods, seating, architectural layout, wall design, and sound system arrangement were thoroughly compared in the case study.

BitTube: Case Study of a Web-Based Peer-Assisted Video-on-Demand System

2008 ◽  
Author(s):  
Bo Liu ◽  
Yi Cui ◽  
Bin Chang ◽  
Ben Gotow ◽  
Yuan Xue
Keyword(s):  
Video On Demand ◽  
Demand System ◽  
Web Based ◽  
On Demand

Vulnerability, Uncertainty and Probability (VUP) Quantification of a Network of Interacting Satellites Using Stochastic Petri Nets (SPN)

2013 ◽  
Author(s):  
Atefeh Einafshar ◽  
Farrokh Sassani
Keyword(s):  
Markov Chain ◽  
Quantitative Analysis ◽  
Petri Nets ◽  
State Space ◽  
Petri Net ◽  
Stochastic Petri Nets ◽  
Discrete State ◽  
New Approach ◽  
Stochastic Petri Net ◽  
Discrete State Space

A new approach to Vulnerability, Uncertainty and Probability (VUP) quantification procedure using Stochastic Petri Nets within a network of interacting satellites is presented. A Stochastic Petri Net based model is developed to quantify VUP in a network of interacting satellites. Three indicators are proposed to determine the VUP definitions in interacting network of satellites. The proposed VUP quantification scheme addresses a methodology which employs a Stochastic Petri Net for quantitative analysis of the behavior of the network. With the random variables associated with the Petri Net transitions, the dynamic behavior of the cooperating satellites in a SPN model can be mapped onto a time-continuous Markov chain with discrete state space. After generating a Markov Stochastic Petri Net model, the probability of a given condition in the network at a specified time can be computed and quantified as well as the vulnerability and uncertainty of the system using the identified indicators.

scholarly journals Off-Line and Dynamic Production Scheduling – A Comparative Case Study

2016 ◽  
Vol 7 (1) ◽  
pp. 21-32 ◽  
Author(s):  
Andrzej Bożek ◽  
Marian Wysocki
Keyword(s):  
Petri Net ◽  
Production Scheduling ◽  
Job Shop ◽  
Dynamic Scheduling ◽  
Graph Representation ◽  
Comparative Case Study ◽  
Reactive Scheduling ◽  
Multi Agent System ◽  
Multi Agent

Abstract A comprehensive case study of manufacturing scheduling solutions development is given. It includes highly generalized scheduling problem as well as a few scheduling modes, methods and problem models. The considered problem combines flexible job shop structure, lot streaming with variable sublots, transport times, setup times, and machine calendars. Tabu search metaheuristic and constraint programming methods have been used for the off-line scheduling. Two dynamic scheduling methods have also been implemented, i.e., dispatching rules for the completely reactive scheduling and a multi-agent system for the predictivereactive scheduling. In these implementations three distinct models of the problem have been used, based on: graph representation, optimal constraint satisfaction, and Petri net formalism. Each of these solutions has been verified in computational experiments. The results are compared and some findings about advantages, disadvantages, and suggestions on using the solutions are formulated.

scholarly journals Early Warning Mechanism of Loess Collapse Based on Stochastic Petri Net: A Case Study in China

2021 ◽  
Vol 14 (5) ◽  
pp. 100-108
Author(s):  
Yining Zhang ◽  
Lin Zhu ◽  
Yuyang Gao ◽  
Mengyun Liu ◽  
Mengxuan Zhang
Keyword(s):  
Petri Net ◽  
Early Warning ◽  
Stochastic Petri Net ◽  
Early Warning Mechanism

Network Streaming: TV Broadcasters in the Digital Space

2019 ◽  
pp. 209-230
Author(s):  
Monica Sandler
Keyword(s):  
Big Data ◽  
Video On Demand ◽  
Digital Space ◽  
On Demand

Monica Sandler focuses on subscription video on demand services, using the case study of Comcast NBCUniversal’s failed SeeSo platform. Her essay examines how television networks themselves can cultivate a franchise identity for themselves by expanding their brand into emerging formats. The essay questions how old media incumbents like NBC can compete against big data-based entertainment companies like Netflix and Amazon.

Sign in / Sign up

Export Citation Format

Share Document