(Georgia Institute of Technology, 2009)
Liu, Ling; Pu, Calton; Wang, Yuehua; Zhang, Gong
In this paper, we present GeoCast, a geographical location aware overlay network framework
designed for providing efficient group communication services. GeoCast can be seen as an extension
to the CAN network in the term of topology management and routing protocol. Geocast design has
three important properties that attractive to group communication applications. First, it uses geographical
mapping of nodes to regions to take advantage of the similarity between physical and network proximity.
Second, a shortcut enabled geo-distance routing protocol is employed in GeoCast, which is more resilient
than Chord-like or Pastry-like overlay networks due to the availability of multiple independent routing
paths. Third and most importantly, a novel routing table management scheme is designed to allow
the applications based on that have ability to manage their maintenance overhead in terms of network
resource constrains.
(Georgia Institute of Technology, 2009)
Mohan, Apurva; Bauer, David; Blough, Douglas M.; Ahamad, Mustaque; Bamba, Bhuvan; Krishnan, Ramkumar; Liu, Ling; Mashima, Daisuke; Palanisamy, Balaji
The storage of health records in electronic format, and the
wide-spread sharing of these records among different health
care providers, have enormous potential benefits to the U.S.
healthcare system. These benefits include both improving
the quality of health care delivered to patients and reducing
the costs of delivering that care. However, maintaining the
security of electronic health record systems and the privacy
of the information they contain is paramount to ensure that
patients have confidence in the use of such systems. In this
paper, we propose a framework for electronic health record
sharing that is patient centric, i.e. it provides patients with
substantial control over how their information is shared and
with whom; provides for verifiability of original sources of
health information and the integrity of the data; and permits fine-grained decisions about when data can be shared
based on the use of attribute-based techniques for authorization and access control. We present the architecture of the
framework, describe a prototype system we have built based
on it, and demonstrate its use within a scenario involving
emergency responders' access to health record information.
(Georgia Institute of Technology, 2009)
Li, Yun; Liu, Ling
This paper takes a systematic approach to examining the basic concepts, the research issues and the state of art technologies in mobile identity management. We
examine the concept of mobile identity and argue that mobile identity should be defined by combining mobile device identity and mobile user identity in a
location-aware computing environment. Thus mobile identity management deals with the management of user identity and mobile device identity, as well as the
management of the linking of human, devices, and locations in different mobile
contexts. Based on this understanding, we review the state of art research on techniques for mobile user identity support, techniques for mobile device identity
support, techniques for linking of a human and her mobile devices, and techniques and issues of linking a mobile device and its location. The survey ends with a summary and an outlook of the future research and technology development trends.