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Articles 1 - 12 of 12
Full-Text Articles in Science and Technology Studies
Security Pitfalls Of An Efficient Threshold Proxy Signature Scheme For Mobile Agents, Yong Yu, Yi Mu, Willy Susilo, Man Ho Au
Security Pitfalls Of An Efficient Threshold Proxy Signature Scheme For Mobile Agents, Yong Yu, Yi Mu, Willy Susilo, Man Ho Au
Professor Willy Susilo
A (t,n) threashold proxy signature scheme enables an original signer to delegate his/her signing power to n proxy signers such that any t or more proxy signers can sign messages on behalf of the original signer, but t-1 or less of them cannot produce a valid proxy signature. Based on the RSA cryptosystem, Hong proposed an efficient (t,n) threshold proxy signature for mobile agents. Cai et al. found that the scheme due to Hong is proxy-unprotected , meaning that the original signer can generate a valid proxy signature by himself. However, it is unclear whether the scheme can be used …
Does Access To Information Technology Make People Happier? Insights From Well-Being Surveys From Around The World, Carol Graham, Milena Nikolova
Does Access To Information Technology Make People Happier? Insights From Well-Being Surveys From Around The World, Carol Graham, Milena Nikolova
Brookings Scholar Lecture Series
This lecture summarizes new research on the relationship between access to cell phones, TV, and the internet and subjective well-being worldwide. Technology access is positive for well-being in general, but with diminishing marginal returns for those who already have much access. It is also associated with increased stress and anger among cohorts for whom access to the technologies is new. The increased financial inclusion in very poor countries that comes with cell phones and mobile banking also has effects on well-being. Well-being levels are higher in the countries with higher levels of access to mobile banking, but so are stress …
Laptops On Trolleys: Lessons From A Mobile-Wireless Hospital Ward, Stephen Weeding, Linda Dawson
Laptops On Trolleys: Lessons From A Mobile-Wireless Hospital Ward, Stephen Weeding, Linda Dawson
Associate Professor Linda Dawson
Most hospital-based staff can be considered to be mobile but many hospital information systems (HIS) are based on fixed desk top computers. Wireless networks allow HIS to be brought to the point of care using mobile devices such as laptops on trolleys thus providing data which can aid in clinical decision-making. The research objective of this project focusses on the collaborative design of a laptop solution for providing data at the point of care. The research approach was based on a combination of action research and design science. Action research techniques including participant observation and informal oneto- one discussions were …
Action Research In Emerging Technologies In Health Information Systems: Creating A Mobile Information Environment In A Hospital Ward, Linda Dawson, Julie Fisher, Stephen Weeding, Liza Heslop, Andrew Howard
Action Research In Emerging Technologies In Health Information Systems: Creating A Mobile Information Environment In A Hospital Ward, Linda Dawson, Julie Fisher, Stephen Weeding, Liza Heslop, Andrew Howard
Associate Professor Linda Dawson
Wireless networks, mobile devices and associated applications are key emerging technologies ideal for nomadic workers such as clinicians in hospital ward settings. These mobile information environments can potentially enhance clinicians' use of patient management and clinical systems by providing decision support and clinical information at the bedside or point of care. Such technologies need to be critically assessed in a hospital environment for their wider potential and application for delivery of information at the point of care. This paper describes the use of action research methods in a project which analysed an existing clinical Information Communication Technology (ICT) environment in …
Towards A Framework For Mobile Information Environments: A Hospital-Based Example, Linda Dawson, Sea Ling, Maria Indrawan, Stephen Weeding, Juanita Femando
Towards A Framework For Mobile Information Environments: A Hospital-Based Example, Linda Dawson, Sea Ling, Maria Indrawan, Stephen Weeding, Juanita Femando
Associate Professor Linda Dawson
We propose a conceptual framework to describe and understand mobile information environments. In our proposal, such an environment can be categorised into different abstraction levels or communities: user level, workflow level, device level and architecture level. A hospital-based example is then used as an illustration for the proposed framework.
Quality Of Experience-Based Image Feature Selection For Mobile Augmented Reality Applications, Yi Cao, Christian H. Ritz, Raad Raad
Quality Of Experience-Based Image Feature Selection For Mobile Augmented Reality Applications, Yi Cao, Christian H. Ritz, Raad Raad
Faculty of Engineering and Information Sciences - Papers: Part A
Mobile augmented reality applications rely on automatically recognising a visual scene through matching of derived image features. To ensure the Quality of Experience (QoE) perceived by users, such applications should achieve high matching accuracy meanwhile minimizing the waiting time to meet real-time requirement. An efficient solution is to develop an effective feature selection method to select the most robust features against distortions caused by camera capture to achieve high matching accuracy whilst transmission and matching process of the features are significant reduced. Feature selection is also beneficial to reducing the computational complexities of the matching system so that waiting time …
18f-Fmiso Pet/Ct Visualization Of Tumor Hypoxia In Patients With Chordoma Of The Mobile And Sacrococcygeal Spine, Matthew D. Cheney, Yen-Lin Chen, Ruth Lim, Barbara K. Winrich, Anca L. Grosu, Alexei V. Trofimov, Nicolas Depauw, Helen A. Shih, Joseph H. Schwab, Francis J. Hornicek, Thomas F. Delaney
18f-Fmiso Pet/Ct Visualization Of Tumor Hypoxia In Patients With Chordoma Of The Mobile And Sacrococcygeal Spine, Matthew D. Cheney, Yen-Lin Chen, Ruth Lim, Barbara K. Winrich, Anca L. Grosu, Alexei V. Trofimov, Nicolas Depauw, Helen A. Shih, Joseph H. Schwab, Francis J. Hornicek, Thomas F. Delaney
Faculty of Engineering and Information Sciences - Papers: Part A
Abstract presented at the American Society for Radiation Oncology 56th Annual Meeting, ASTRO's 56th Annual Meeting, San Francisco, United States, 14–17 September 2014
Inclusion Of Mobile Telephone Numbers Into An Ongoing Population Health Survey In New South Wales, Australia, Using An Overlapping Dual-Frame Design: Impact On The Time Series, Margo Barr, Raymond A. Ferguson, David G. Steel
Inclusion Of Mobile Telephone Numbers Into An Ongoing Population Health Survey In New South Wales, Australia, Using An Overlapping Dual-Frame Design: Impact On The Time Series, Margo Barr, Raymond A. Ferguson, David G. Steel
Faculty of Engineering and Information Sciences - Papers: Part A
No abstract provided.
Adaptive And Robust Feature Selection For Low Bitrate Mobile Augmented Reality Applications, Yi Cao, Christian H. Ritz, Raad Raad
Adaptive And Robust Feature Selection For Low Bitrate Mobile Augmented Reality Applications, Yi Cao, Christian H. Ritz, Raad Raad
Faculty of Engineering and Information Sciences - Papers: Part A
Mobile augmented reality applications rely on automatically matching a captured visual scene to an image in a database. This is typically achieved by deriving a set of features for the captured image, transmitting them through a network and then matching with features derived for a database of reference images. A fundamental problem is to select as few and robust features as possible such that the matching accuracy is invariant to distortions caused by camera capture whilst minimising the bit rate required for their transmission. In this paper, novel feature selection methods are proposed, based on the entropy of the image …
Collaborative Learning Through Taas: A Mobile System For Courses Over The Cloud, Geng Sun, Jun Shen
Collaborative Learning Through Taas: A Mobile System For Courses Over The Cloud, Geng Sun, Jun Shen
Faculty of Engineering and Information Sciences - Papers: Part A
As mobile cloud-based learning gain wide acceptance, learners engaged in online courses have more opportunities to participate in virtual teams. In this paper we present a new system, Teamwork as a Service (TaaS), which is service-oriented and emphasizes on building a smart collaborative learning context in conjunction with cloudhosting learning management systems (LMSs). Each of the five services of TaaS aims to organize a certain type of refined learning activities, so as to join together to facilitate the whole collaborative learning process. The implementation details of TaaS are demonstrated, and some typical user interfaces (UIs) are illustrated about how TaaS …
Task-Basedwireless Mobile Agents Search And Deployment For Ad Hoc Network Establishment In Disaster Environments, Xing Su, Minjie Zhang, Quan Bai
Task-Basedwireless Mobile Agents Search And Deployment For Ad Hoc Network Establishment In Disaster Environments, Xing Su, Minjie Zhang, Quan Bai
Faculty of Engineering and Information Sciences - Papers: Part A
In disaster environments, due to the destruction of local communication infrastructures, wireless mobile agents (robots) are employed to search and deploy to establish ad hoc networks. With the guidance of the network, first responders can efficiently perform tasks in disaster environments. However, due to the uncertainties and complexities of disaster environments and the limited capabilities of wirelessmobile agents, it is challenging to apply wireless mobile agents to disaster environments in both theory and practice. To this end, a task-based wireless mobile agents search and deployment approach is proposed for ad hoc network establishment in disaster environments. The proposed approach consists …
Security Pitfalls Of An Efficient Threshold Proxy Signature Scheme For Mobile Agents, Yong Yu, Yi Mu, Willy Susilo, Man Ho Au
Security Pitfalls Of An Efficient Threshold Proxy Signature Scheme For Mobile Agents, Yong Yu, Yi Mu, Willy Susilo, Man Ho Au
Faculty of Engineering and Information Sciences - Papers: Part A
A (t,n) threashold proxy signature scheme enables an original signer to delegate his/her signing power to n proxy signers such that any t or more proxy signers can sign messages on behalf of the original signer, but t-1 or less of them cannot produce a valid proxy signature. Based on the RSA cryptosystem, Hong proposed an efficient (t,n) threshold proxy signature for mobile agents. Cai et al. found that the scheme due to Hong is proxy-unprotected , meaning that the original signer can generate a valid proxy signature by himself. However, it is unclear whether the scheme can be used …