Radio tuning search old style SFX

A sound recording of a very old, large radio/record player with fabulous speakers and vintage sound.

Alien radio waves SFX

Alien Radio Waves SFX is a sound effect on a synthesizer that could be mistaken for alien radio waves.

Multi-input-multi-output antennas for radio frequency identification systems

In this chapter the authors discuss the physical insight of the role of wireless communication in RFID systems. In this respect, this chapter gives a brief introduction on the wireless communication model followed by various communication schemes. The chapter also discusses various channel impairments and the statistical modeling of fading channels based on the environment in which the RFID tag and reader may be present. The chapter deals with the fact that the signal attenuations can be dealt with up to some level by using multiple antennas at the reader transmitter and receiver to improve the performance. Thus, this chapter discusses the use of transmit diversity at the reader transmitter to transmit multiple copies of the signal. Following the above, the use of receiver combining techniques are discussed, which shows how the multiple copies of the signal arriving at the reader receiver from the tag are combined to reduce the effects of fading. The chapter then discusses various modulation techniques required to modulate the signal before transmitting over the channel. It then presents a few channel estimation algorithms, according to which, by estimating the channel state information of the channel paths through which transmission takes place, performance of the wireless system can be further increased. Finally, the Antenna selection techniques are presented, which further helps in improving the system performance.

Journalists, remote Indigenous sources and cultural competence

This is the report of the Australian news media and Indigenous policymaking 1988-2008 Australian Research Council Discovery Project.

Academics,think tanks and journalists : the trouble with expert opinion, empirical evidence and bilingual education

This book reports the findings of the Australian News media and Indigenous policymaking 1988-2008 ARC Discovery Project

Changing newsrooms : a survey of journalists in Victoria, Australia

Anecdotal evidence suggests Australian journalism is changing. This study borrows from earlier studies carried out in the United States and Australia to gain a picture ofthe contemporQ/Y Australian journalist. This paper is based on a study carried out in the Australian state of Victoria in late 2007 and early 2008.

Adaptation of LEACH routing protocol to cognitive radio sensor networks

One of the drawbacks of LEACH protocol is the uncontrolled selection of cluster heads which, in some rounds, leads to the concentration of them in a limited area due to the randomness of the selection procedure. LEACH-C is a variant of LEACH that uses a centralized clustering algorithm and forms good clusters through sink control. According to experimental results, the IEEE 802.15.4 packets are damaged by WLAN interferences in ISM band. It seems that, sensor nodes equipped with cognitive radio capabilities can overcome this problem. In cognitive radio sensor networks (CRSN), routing must be accompanied by channel allocation. This requires spectrum management which can be devolved to cluster heads. For this networks, new duty cycle mechanisms must be designed that jointly consider neighbor discovery, and spectrum sensing/allocation. Cluster-based network architecture is a good choice for effective dynamic spectrum management. In such architecture, cluster heads have a proper spatial distribution and are optimally located all over the network. In this paper, using the physical layer information and preserving the feature of random cluster head selection in LEACH, it has been tried to both move the position of cluster heads to appropriate locations and make their quantity optimal. The simulation results show that the transferal of cluster heads to appropriate locations increases the network lifetime significantly though this comes at the price of early instability appearance. By considering the energy level in cluster head election algorithm, one can overcome the network stability issues too. However, this will move the cluster heads away from their appropriate locations. © 2012 IEEE.

Journalists and the stirring of Australian public diplomacy: the Colombo Plan towards the 1960s

 Australia was an active member of the Colombo Plan for aid to South and Southeast Asia, beginning in 1951 as a loosely organized umbrella of multiple bilateral aid agreements between Commonwealth countries and quickly expanding in geographical reach and membership. Towards the end of the 1950s, as members of this ‘plan’ geared up for a new wave of aid projects, they also attached new importance to information activities associated with aid. In this Australian case study, journalists were thrust to the fore of story-generation relating to Australia’s involvement in the Colombo Plan. These written stories, and also still and moving images, were aimed at both domestic Australian audiences and also overseas audiences. Thus began some of the first important steps in what today is called ‘public diplomacy’, and what, at the time, was a new experiment in foreign policy and reputation-making.

Study of radio frequency plasma treatment of PVDF film using Ar, O2 and Ar + O2 gases for improved polypyrrole adhesion

Improvement of the binding of polypyrrole with PVDF (polyvinylidene fluoride) thin film using low pressure plasma was studied. The effects of various plasma gases i.e., Ar, O2 and Ar + O2 gases on surface roughness, surface chemistry and hydrophilicity were noted. The topographical change of the PVDF film was observed by means of scanning electron microscopy and chemical changes by X-ray photoelectron spectroscopy, with adhesion of polypyrrole (PPy) by abrasion tests and sheet resistance measurements. Results showed that the increase in roughness and surface functionalization by oxygen functional groups contributed to improved adhesion and Ar + O2 plasma gave better adhesion.