Object organization on parallel broadcast channels in a global information sharing environment

2002 ◽  
Author(s):  
A.R. Hurson ◽  
Y.C. Chehadeh ◽  
J. Hannan
Keyword(s):  
Information Sharing ◽  
Broadcast Channels ◽  
Global Information ◽  
Object Organization

Using Digital Portfolios to Enhance Students’ Capacity for Communication about Learning

2013 ◽  
pp. 37-53 ◽  
Author(s):  
Brian Kissel ◽  
S. Michael Putman ◽  
Katie Stover
Keyword(s):  
Information Sharing ◽  
Teaching Practices ◽  
Digital Technologies ◽  
Qualitative Approach ◽  
Student Writing ◽  
Global Information ◽  
Digital Environment ◽  
Digital Portfolios ◽  
International Reading Association ◽  
Writing Portfolios

There is a clear consensus that students need to be proficient in the use of digital technologies to help them become knowledgeable participants in an era of global information sharing (International Reading Association, 2009). Acknowledging this, the current study was situated in the belief that writers, when engaged in online composition and the creation of digital portfolios, engage in processes that differ from traditional pencil-paper types of writing. A qualitative approach was utilized to examine student writing samples and reflections over a two-year timeframe as the students transitioned from traditional writing portfolios to those created and maintained digitally on a wiki. The results demonstrated that digital portfolios provide a platform for students to communicate, express their ideas, share their understandings, and collaboratively construct meaning with an authentic audience. Correspondingly, it also demonstrates the necessity of adjusting teaching practices to accommodate for conditions that arise from the unique opportunities presented by the digital environment.

MAMADAS

2011 ◽  
pp. 320-347
Author(s):  
Yu Jiao ◽  
Ali R. Hurson
Keyword(s):  
Information Sharing ◽  
Search Engine ◽  
Mobile Agent ◽  
Data Access ◽  
Past Research ◽  
Data Sources ◽  
Heterogeneous Databases ◽  
Security Architecture ◽  
Global Information ◽  
Agent Based

Creating a global information-sharing environment in the presence of autonomy and heterogeneity of data sources is a difficult task. When adding mobility and wireless media to this mix, the constraints on bandwidth, connectivity, and resources worsen the problem. Our past research in global information-sharing systems resulted in the design, implementation, and prototype of a search engine, the summary-schemas model, which supports imprecise global accesses to the data sources while preserving local autonomy. We extended the scope of our search engine by incorporating mobile agent technology to alleviate many problems associated with wireless communication. We designed and prototyped a mobile agent-based secure mobile data access system (MAMDAS) framework for information retrieval in large, distributed, and heterogeneous databases. In order to address the mounting concerns for information security, we also proposed a security architecture for MAMDAS. As shown by our experimental study, MAMDAS demonstrates good performance, scalability, portability, and robustness.

Do You Want to See the Tree? Ignore the Forest

2014 ◽  
Vol 61 (3) ◽  
pp. 205-214 ◽  
Author(s):  
Nicolas Poirel ◽  
Claire Sara Krakowski ◽  
Sabrina Sayah ◽  
Arlette Pineau ◽  
Olivier Houdé ◽  
...  
Keyword(s):  
Visual Recognition ◽  
Local Level ◽  
Local Information ◽  
Visual Environment ◽  
Global Information ◽  
Focus Attention ◽  
Global Level ◽  
Hierarchical Stimuli ◽  
Priming Paradigm ◽  
The One

The visual environment consists of global structures (e.g., a forest) made up of local parts (e.g., trees). When compound stimuli are presented (e.g., large global letters composed of arrangements of small local letters), the global unattended information slows responses to local targets. Using a negative priming paradigm, we investigated whether inhibition is required to process hierarchical stimuli when information at the local level is in conflict with the one at the global level. The results show that when local and global information is in conflict, global information must be inhibited to process local information, but that the reverse is not true. This finding has potential direct implications for brain models of visual recognition, by suggesting that when local information is conflicting with global information, inhibitory control reduces feedback activity from global information (e.g., inhibits the forest) which allows the visual system to process local information (e.g., to focus attention on a particular tree).

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