Sciweavers

3693 search results - page 295 / 739
» User experience over time
Sort
View
ICASSP
2010
IEEE
15 years 5 months ago
Adaptive spectrum sensing for agile cognitive radios
Vast segments of the frequency spectrum are licensed to specific users for particular applications. These legacy users, however, often under-utilize their designated spectrum seg...
Ali Tajer, Rui Castro, Xiaodong Wang
CORR
2010
Springer
82views Education» more  CORR 2010»
15 years 5 months ago
Secret Sharing and Proactive Renewal of Shares in Hierarchical Groups
Secret sharing in user hierarchy represents a challenging area for research. Although a lot of work has already been done in this direction, this paper presents a novel approach t...
Ruchira Naskar, Indranil Sengupta
CISIS
2009
IEEE
15 years 3 months ago
Evaluation of a Framework for Dynamic Source Selection in Stream Processing
The volume of stream data delivered from different information sources is increasing. There are a variety of demands to utilize such stream data for applications. Stream processin...
Kousuke Ohki, Yousuke Watanabe, Hiroyuki Kitagawa
TWC
2010
15 years 12 days ago
Joint channel estimation and resource allocation for MIMO systems-part II: multi-user and numerical analysis
This is the second part of a two-part paper on the joint channel estimation and resource allocation problem in MIMO systems with noisy channel estimation at the receiver side and p...
Alkan Soysal, Sennur Ulukus
HICSS
2011
IEEE
247views Biometrics» more  HICSS 2011»
14 years 9 months ago
Is Happiness Contagious Online? A Case of Twitter and the 2010 Winter Olympics
Is happiness contagious online? To answer this question, this paper investigates the posting behavior of users on Twitter.com, a popular online service for sharing short messages....
Anatoliy A. Gruzd, Sophie Doiron, Philip Mai