scholarly journals Self managed Access Scheme for Demand Request in TDM TDMA Star Topology Network

2019 ◽  
Vol 69 (1) ◽  
pp. 80-86 ◽  
Author(s):  
Trilok Kumar Saini ◽  
S. C. Sharma
Keyword(s):  
High Order ◽  
Slotted Aloha ◽  
Resource Assignment ◽  
Media Access ◽  
Access Protocol ◽  
Star Topology ◽  
Access Scheme ◽  
Shared Channel ◽  
The Media ◽  
Feedback Time

In demand assignment protocol, resources are granted on the basis of demand, governing some rules, policies in resource assignment and after the completion of need, resources are released back to the central pool for further requests. In star topology TDM/TDMA network of VSATs, large number of participating terminals generate signaling packet on common demand request channel. It is desired that these signaling terminals to have higher chances of successful access to the media and at the same time with minimal number of collision over the shared channel. Under these circumstances, performance of media access protocol is really crucial. Aloha is the simplistic technique to access the shared channel but suffers from extremely low throughput. Its immediate successor slotted Aloha improves the throughput by cutting down the vulnerable period to half by agreeing on transmission at slot boundaries. This improvement is also not adequate to provide the better chances of packets getting through when multiple nodes are participating. The large latency network where one hop delay is of the order of 270ms, feedback time and timeouts are also of high order this further worsen the problem. In this paper, we propose self-managed access scheme for demand request that tries to reduce the collision by managing the multiple requests and distributing them over different slots.

The Process of Globalization and Its Impact on Media

2016 ◽  
Vol 1 (4) ◽  
pp. 150
Author(s):  
Veton Zejnullahi
Keyword(s):  
New Technology ◽  
World Order ◽  
Modern Society ◽  
Media Access ◽  
Four Corners ◽  
The World ◽  
The Media ◽  
The Republic ◽  
Human Eyes ◽  
The Impact

The process of globalization, which many times is considered as new world order is affecting all spheres of modern society but also the media. In this paper specifically we will see the impact of globalization because we see changing the media access to global problems in general being listed on these processes. We will see that the greatest difficulties will have small media as such because the process is moving in the direction of creating mega media which thanks to new technology are reaching to deliver news and information at the time of their occurrence through choked the small media. So it is fair to conclude that the rapid economic development and especially the technology have made the world seem "too small" to the human eyes, because for real-time we will communicate with the world with the only one Internet connection, and also all the information are take for the development of events in the four corners of the world and direct from the places when the events happen. Even Albanian space has not left out of this process because the media in the Republic of Albania and the Republic of Kosovo are adapted to the new conditions under the influence of the globalization process. This fact is proven powerful through creating new television packages, written the websites and newspapers in their possession.

Accountability and the Media

2014 ◽  
Vol 652 (1) ◽  
pp. 206-221
Author(s):  
Anton Harber
Keyword(s):  
South African ◽  
News Media ◽  
Media Access ◽  
Political Interference ◽  
The Face ◽  
Public Broadcaster ◽  
The Media ◽  
The Government ◽  
The Cost ◽  
Poor Management

Two decades of contestation over the nature and extent of transformation in the South African news media have left a sector different in substantive ways from the apartheid inheritance but still patchy in its capacity to fill the democratic ideal. Change came fast to a newly open broadcasting sector, but has faltered in recent years, particularly in a public broadcaster troubled by political interference and poor management. The potential of online media to provide much greater media access has been hindered by the cost of bandwidth. Community media has grown but struggled to survive financially. Print media has been aggressive in investigative exposé, but financial cutbacks have damaged routine daily coverage. In the face of this, the government has turned its attention to the print sector, demanding greater—but vaguely defined—transformation and threatened legislation. This has met strong resistance.

Valuing the Media: Access and Autonomy as Functions of Legitimacy for Journalists

2015 ◽  
Vol 8 (1) ◽  
pp. 46-67 ◽  
Author(s):  
David Welch Suggs
Keyword(s):  
Social Media ◽  
Intercollegiate Athletics ◽  
Latent Variable ◽  
Structural Equation ◽  
Equation Model ◽  
Media Access ◽  
Sports Organizations ◽  
The Past ◽  
Digital Era ◽  
The Media

Sports reporters depend on access to events and sources as much or more than any other news professional. Over the past few years, some sports organizations have attempted to restrict such access, as well as what reporters can publish via social media. In the digital era, access and publishing autonomy, as institutionalized concepts, are evolving rapidly. Hypotheses tying access and work practices to reporters’ perceptions of the legitimacy they experience are developed and tested via a structural equation model, using responses to a survey of journalists in American intercollegiate athletics and observed dimensions of access and autonomy to measure a latent variable of legitimacy. The model suggests that reporters have mixed views about whether they possess the legitimacy they need to do their jobs.

scholarly journals Polarized MIMO Slotted ALOHA Random Access Scheme in Satellite Network

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 26354-26363 ◽  
Author(s):  
Jialing Bai ◽  
Guangliang Ren
Keyword(s):  
Random Access ◽  
Satellite Network ◽  
Slotted Aloha ◽  
Access Scheme

Media and the Radical Right

2018 ◽  
Author(s):  
Antonis A. Ellinas
Keyword(s):  
Radical Right ◽  
Developmental Phase ◽  
Right Wing ◽  
Media Access ◽  
Individual Level ◽  
Political Opportunities ◽  
Key Issues ◽  
The Media ◽  
Future Work ◽  
Political Demand

The way the media relate to radical right-wing actors remains one of the least studied areas in the literature on the radical right. This chapter examines how the media affect the demand for and the supply of right-wing radicalism. The media can affect political demand by setting the agenda on or framing key issues such as immigration and crime, helping legitimize a political space in which the radical right can thrive. On the supply side, media access and exposure are a political resource that can help outsiders enter the political game and provide validation, momentum, and legitimacy. Media effects depend on availability of political opportunities, developmental phase of the radical actor, type of coverage, and type of medium. Future work can use experimental methods to probe individual-level links between media cues and voter or activist preferences, and to examine media regulations, especially of newer media.

The Press and the Emergent Political Class in Nigeria

2020 ◽  
pp. 606-618
Author(s):  
Ibitayo Samuel Popoola
Keyword(s):  
The Political ◽  
Key Factors ◽  
Media Access ◽  
Media Ownership ◽  
Political Class ◽  
Post Colonial ◽  
Playing Field ◽  
The Press ◽  
The Media

This probing thesis in this study is on how the political class in colonial and post-colonial Nigeria established, maintained, improved and controls the machinery of the state through the press. While establishing media ownership and unequal media access as key factors responsible for the emergence of the political class, the study similarly discovered that the political class emerged because they were read, advertised or packaged by the press. Robert C. North (1967:301) says “politics could not exist without communication, nor could wars be fought.” The media are also the playing field on which politics occurs” (Perloff 2014:37). They are also the strategic routes through which aspiring politicians must travel during elections. Through a case study method of analysis, this study discovered that the political class emerged because they were read, advertised, and publicized by the press. For this reason, the political class regarded the press as partners in progress.

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