Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 7 of 7

Full-Text Articles in Physical Sciences and Mathematics

A Survey And Tutorial Of Rfid Anti-Collision Protocols, Dheeraj Klair, Kwan-Wu Chin, Raad Raad Dec 2012

A Survey And Tutorial Of Rfid Anti-Collision Protocols, Dheeraj Klair, Kwan-Wu Chin, Raad Raad

Dr Raad Raad

RFID technologies have revolutionized the asset tracking industry, with applications ranging from automated checkout to monitoring the medication intakes of elderlies. In all these applications, fast, and in some cases energy efficient, tag reading is desirable, especially with increasing tag numbers. In practice, tag reading protocols face many problems. A key one being tag collision, which occurs when multiple tags reply simultaneously to a reader. As a result, an RFID reader experiences low tag reading performance, and wastes valuable energy. Therefore, it is important that RFID application developers are aware of current tag reading protocols. To this end, this paper …


Survey Of Experimental Work On The Self-Heating And Spontaneous Combustion Of Coal, Mark Nelson, Xiao Dong Chen Dec 2012

Survey Of Experimental Work On The Self-Heating And Spontaneous Combustion Of Coal, Mark Nelson, Xiao Dong Chen

Associate Professor Mark Nelson

No abstract provided.


Interactive Effects Of Networked Publics And Social Media On Transforming The Public Sphere: A Survey Of Iran's Leaderless 'Social Media Revolution', Akemi Chatfield, Hans Scholl, Reza Akbari, Nima Mirzayi Dec 2012

Interactive Effects Of Networked Publics And Social Media On Transforming The Public Sphere: A Survey Of Iran's Leaderless 'Social Media Revolution', Akemi Chatfield, Hans Scholl, Reza Akbari, Nima Mirzayi

Dr Akemi Chatfield

It has been argued that hierarchical 'command and control' leadership is required to coordinate massive and rapid military or disaster response. Against this, the concept of leaderless 'social media revolution' refers to the wide-spread use of Web 2.0 social media by ordinary citizens to transform the public sphere and engage in collective political action, including coordinating massive and rapid protests against government. However, conceptual and empirical research efforts remain scarce to date. This research draws on the emergent perspective on causal agency in effecting change in social systems to examine our research proposition that the interactive effects of networked publics …


A Survey Of Some Mathematical Results For Highly Frictional Granular Materials, Grant Cox, Ngamta Thamwattana, James Hill Dec 2012

A Survey Of Some Mathematical Results For Highly Frictional Granular Materials, Grant Cox, Ngamta Thamwattana, James Hill

Dr Ngamta Thamwattana

Recently the authors have exploited the notion of a highly frictional granular material to derive analytical solutions for certain problems. Generally, we use the term highly frictional granular material to refer to those materials which possess an angle of internal friction such that the trigonometric sine of the angle of internal friction is close to unity. There are many granular materials for which this is the case, such as black and brown coal and limestone powder. For such materials formal perturbation solutions can be derived for which the zeroth-order solution corresponds to an angle of internal friction precisely equal to …


Coordination In Wireless Sensor-Actuator Networks: A Survey, Hamidreza Salarian, Kwan-Wu Chin, Fazel Naghdy Nov 2012

Coordination In Wireless Sensor-Actuator Networks: A Survey, Hamidreza Salarian, Kwan-Wu Chin, Fazel Naghdy

Associate Professor Kwan-Wu Chin

"Wireless Sensor-Actuator Networks (WSANs) have a myriad of applications, ranging from pacifying bulls to controlling light intensity in homes automatically. An important aspect of WSANs is coordination. Unlike conventional Wireless Sensor Networks (WSNs), sensor and actuator nodes must work hand-in-hand to collect and forward data, and act on any sensed data collaboratively, promptly and reliably. To this end, this paper reviews current state-of-the-art techniques that address this fundamental problem: More specifically, we review techniques in the following areas: (i) sensor-actuator coordination, (ii) routing protocols, (iii) transport protocols, and (iv) actuator-to-actuator coordination protocols. We provide an extensive qualitative comparison of their …


Trust Perceptions Of Online Travel Information By Different Content Creators: Some Social And Legal Implications., Stephen Burgess, Carmine Sellitto, Carmen Cox, Jeremy Buultjens Jul 2010

Trust Perceptions Of Online Travel Information By Different Content Creators: Some Social And Legal Implications., Stephen Burgess, Carmine Sellitto, Carmen Cox, Jeremy Buultjens

Carmen Cox

Consumers are increasingly turning to the online environment to provide information to assist them in making purchase decisions related to travel products. They often rely on travel recommendations from different sources, such as sellers, independent experts and, increasingly, other consumers. A new type of online content, user-generated content (UGC), provides a number of legal and social challenges to providers and users of that content, especially in relation to areas such as defamation, misrepresentation and social embarrassment. This paper reports research that examined the level of trustworthiness of online travel information from these different sources. The study used a survey of …


A Snapshot Of Results Of The Survey Study On Rfid Technology, S. F. Wamba Dec 2009

A Snapshot Of Results Of The Survey Study On Rfid Technology, S. F. Wamba

Dr Samuel Fosso Wamba

No abstract provided.