Framework for Anonymous Secure Data Transfer in Vehicular Ad-Hoc Networks

With the increasing number of Vehicular Autonomous Network (VANET) architectures and applications, user privacy must be addressed and protected. Internet of Things (IoT) and their applications take care of everyday mundane task in order to increase user convenience and productivity. However, studies have shown that IoT architectures can be a weak spot in network security, including data being sent plain text. In this thesis, a VANET architecture is proposed that is capable of securing anonymous data collection from a distributed set of autonomous vehicles. The proposed architecture features a hybrid combination of centralized and decentralized routing concepts. Unlike other VANET implementations, our proposed architecture provides anonymity to users in the network. Lower latency can be achieved by merging data from live short-range ad-hoc routing methods with the data collected from a pseudo-live long range centralized routing methods. The proposed architecture guarantees user anonymity within the VANET framework. Most VANET models assume users do not value the privacy of their identity. We assume that each vehicle is equipped with a VANET computer capable of storing data, performing calculations, and both sending and receiving data wirelessly. Therefore vehicles can communicate directly with each other and exchange data within short distances as well as communicate with long-range wireless infrastructure. Simulation results show the implementation is equipped to handle diverse traffic scenarios as well as deter adversaries to the network from maliciously trying to manipulate collected data

Advertising competition in the French free-to-air television broadcasting industry

This paper studies the advertising competition in the French free TV broadcasting industry, following a decision of the French anti-trust authority on the acquisition of two channels by the most active media group of the sector. After specifying a structural model of oligopoly competition of free TVs, we identify the shape and magnitude of the feedback loop between TV viewers and advertisers using French market data from March 2008 to December 2013. We implement a simple procedure to test the market conduct of TV channels, and identify that the nature of competition is of Cournot type in this industry. Finally, based on a series of competitive analysis, we conclude that the approved acquisition has not significantly affected the industry's competitiveness, and that the implemented behavioral remedies seems to be efficient in protecting the consumer surplus

Saving New Sounds

"Over seventy-five million Americans listen to podcasts every month, and the average weekly listener spends over six hours tuning into podcasts from the more than thirty million podcast episodes currently available. Yet despite the excitement over podcasting, the sounds of podcasting’s nascent history are vulnerable and they remain mystifyingly difficult to research and preserve. Podcast feeds end abruptly, cease to be maintained, or become housed in proprietary databases, which are difficult to search with any rigor. Podcasts might seem to be highly available everywhere, but it’s necessary to preserve and analyze these resources now, or scholars will find themselves writing, researching, and thinking about a past they can’t fully see or hear. This collection gathers the expertise of leading and emerging scholars in podcasting and digital audio in order to take stock of podcasting’s recent history and imagine future directions for the format. Essays trace some of the less amplified histories of the format and offer discussions of some of the hurdles podcasting faces nearly twenty years into its existence. Using their experiences building and using the PodcastRE database—one of the largest publicly accessible databases for searching and researching podcasts—the volume editors and contributors reflect on how they, as media historians and cultural researchers, can best preserve podcasting’s booming audio cultures and the countless voices and perspectives podcasting adds to our collective soundscape.

News Literacy and Democracy

News Literacy and Democracy invites readers to go beyond surface-level fact checking and to examine the structures, institutions, practices, and routines that comprise news media systems. This introductory text underscores the importance of news literacy to democratic life and advances an argument that critical contexts regarding news media structures and institutions should be central to news literacy education. Under the larger umbrella of media literacy, a critical approach to news literacy seeks to examine the mediated construction of the social world and the processes and influences that allow some news messages to spread while others get left out. Drawing on research from a range of disciplines, including media studies, political economy, and social psychology, this book aims to inform and empower the citizens who rely on news media so they may more fully participate in democratic and civic life. The book is an essential read for undergraduate students of journalism and news literacy and will be of interest to scholars teaching and studying media literacy, political economy, media sociology, and political psychology

Radio evolution: conference proceedings

Fundação para a Ciência e a Tecnologia (FCT

A study into prolonging Wireless Sensor Network lifetime during disaster scenarios

A Wireless Sensor Network (WSN) has wide potential for many applications. It can be employed for normal monitoring applications, for example, the monitoring of environmental conditions such as temperature, humidity, light intensity and pressure. A WSN is deployed in an area to sense these environmental conditions and send information about them to a sink. In certain locations, disasters such as forest fires, floods, volcanic eruptions and earth-quakes can happen in the monitoring area. During the disaster, the events being monitored have the potential to destroy the sensing devices; for example, they can be sunk in a flood, burnt in a fire, damaged in harmful chemicals, and burnt in volcano lava etc. There is an opportunity to exploit the energy of these nodes before they are totally destroyed to save the energy of the other nodes in the safe area. This can prolong WSN lifetime during the critical phase. In order to investigate this idea, this research proposes a new routing protocol called Maximise Unsafe Path (MUP) routing using Ipv6 over Low power Wireless Personal Area Networks (6LoWPAN). The routing protocol aims to exploit the energy of the nodes that are going to be destroyed soon due to the environment, by concentrating packets through these nodes. MUP adapts with the environmental conditions. This is achieved by classifying four different levels of threat based on the sensor reading information and neighbour node condition, and represents this as the node health status, which is included as one parameter in the routing decision. High priority is given to a node in an unsafe condition compared to another node in a safer condition. MUP does not allow packet routing through a node that is almost failed in order to avoid packet loss when the node fails. To avoid the energy wastage caused by selecting a route that requires a higher energy cost to deliver a packet to the sink, MUP always forwards packets through a node that has the minimum total path cost. MUP is designed as an extension of RPL, an Internet Engineering Task Force (IETF) standard routing protocol in a WSN, and is implemented in the Contiki Operating System (OS). The performance of MUP is evaluated using simulations and test-bed experiments. The results demonstrate that MUP provides a longer network lifetime during a critical phase of typically about 20\% when compared to RPL, but with a trade-off lower packet delivery ratio and end-to-end delay performances. This network lifetime improvement is crucial for the WSN to operate for as long as possible to detect and monitor the environment during a critical phase in order to save human life, minimise loss of property and save wildlife

News Literacy and Democracy

News Literacy and Democracy invites readers to go beyond surface-level fact checking and to examine the structures, institutions, practices, and routines that comprise news media systems. This introductory text underscores the importance of news literacy to democratic life and advances an argument that critical contexts regarding news media structures and institutions should be central to news literacy education. Under the larger umbrella of media literacy, a critical approach to news literacy seeks to examine the mediated construction of the social world and the processes and influences that allow some news messages to spread while others get left out. Drawing on research from a range of disciplines, including media studies, political economy, and social psychology, this book aims to inform and empower the citizens who rely on news media so they may more fully participate in democratic and civic life. The book is an essential read for undergraduate students of journalism and news literacy and will be of interest to scholars teaching and studying media literacy, political economy, media sociology, and political psychology

Global Diffusion of the Internet - I: India: Is the Elephant Learning to Dance?

With his proclamation in 1998 that IT is India\u27s tomorrow , Prime Minister Vajpayee captured a vision of a 21st century India substantially different from that of the previous century, with its high levels of poverty, bloated bureaucracies, and protectionist policies. He envisioned the new India as a major IT power, fully integrated with the global economy, bringing about substantial domestic and international benefit. The Internet is a key to this vision, both as an enabler of technology-based change, and as an indicator of the vision\u27s fulfillment. Using an analytic framework developed by the authors and others, this study documents the growth of the Internet in India, from the pre-Internet networks through the boom of the Internet from 1998 to 2003. The Indian experience provides an example of how fundamental, focused changes in policy and legislation can unleash forces that accelerate Internet diffusion. Private sector initiatives greatly expanded the Internet infrastructure and Internet services market. At the same time, Government initiatives promoted the expansion of the Internet into parts of the country not well served by private ISPs. Poverty and limited telecommunications infrastructure currently limit the rate and extent of Internet expansion. However, time is an ally; the basic elements for continued growth of the Internet are largely in place