Distributed identity discovery service for non-federated systems

Author(s):  
Marcin Dąbrowski ◽  
Piotr Pacyna
Keyword(s):  
2009 ◽  
Vol 13 (7) ◽  
pp. 549-551 ◽  
Author(s):  
Luca Valcarenghi ◽  
Francesco Paolucci ◽  
Filippo Cugini ◽  
Piero Castoldi

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Federica Paganelli ◽  
David Parlanti

Current trends towards the Future Internet are envisaging the conception of novel services endowed with context-aware and autonomic capabilities to improve end users’ quality of life. The Internet of Things paradigm is expected to contribute towards this ambitious vision by proposing models and mechanisms enabling the creation of networks of “smart things” on a large scale. It is widely recognized that efficient mechanisms for discovering available resources and capabilities are required to realize such vision. The contribution of this work consists in a novel discovery service for the Internet of Things. The proposed solution adopts a peer-to-peer approach for guaranteeing scalability, robustness, and easy maintenance of the overall system. While most existing peer-to-peer discovery services proposed for the IoT support solely exact match queries on a single attribute (i.e., the object identifier), our solution can handle multiattribute and range queries. We defined a layered approach by distinguishing three main aspects: multiattribute indexing, range query support, peer-to-peer routing. We chose to adopt an over-DHT indexing scheme to guarantee ease of design and implementation principles. We report on the implementation of a Proof of Concept in a dangerous goods monitoring scenario, and, finally, we discuss test results for structural properties and query performance evaluation.


2008 ◽  
Vol 31 (1) ◽  
pp. 83 ◽  
Author(s):  
Jody Condit Fagan ◽  
Meris A. Mandernach ◽  
Carl S. Nelson ◽  
Jonathan R. Paulo ◽  
Grover Saunders

<p>Discovery tools are emerging in libraries. These tools offer library patrons the ability to concurrently search the library catalog and journal articles. While vendors rush to provide feature-rich interfaces and access to as much content as possible, librarians wonder about the usefulness of these tools to library patrons. In order to learn about both the utility and usability of EBSCO Discovery Service, James Madison University conducted a usability test with eight students and two faculty members. The test consisted of nine tasks focused on common patron requests or related to the utility of specific discovery tool features. Software recorded participants’ actions and time on task, human observers judged the success of each task, and a post-survey questionnaire gathered qualitative feedback and comments from the participants.  Overall, participants were successful at most tasks, but specific usability problems suggested some interface changes for both EBSCO Discovery Service and JMU’s customizations of the tool.  The study also raised several questions for libraries above and beyond any specific discovery tool interface, including the scope and purpose of a discovery tool versus other library systems, working with the large result sets made possible by discovery tools, and navigation between the tool and other library services and resources.  This article will be of interest to those who are investigating discovery tools, selecting products, integrating discovery tools into a library web presence, or performing evaluations of similar systems.</p>


2015 ◽  
Vol 34 (1) ◽  
Author(s):  
Kenyon Stuart ◽  
Ken Varnum ◽  
Judith Ahronheim
Keyword(s):  

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