Weak social ties improve content delivery in behavior-aware opportunistic networks

2015 ◽  
Vol 25 ◽  
pp. 314-329 ◽  
Author(s):  
Elena Pagani ◽  
Lorenzo Valerio ◽  
Gian Paolo Rossi
Keyword(s):  
Social Ties ◽  
Content Delivery ◽  
Opportunistic Networks

scholarly journals FSF: Applying Machine Learning Techniques to Data Forwarding in Socially Selfish Opportunistic Networks

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2374 ◽  
Author(s):  
Camilo Souza ◽  
Edjair Mota ◽  
Diogo Soares ◽  
Pietro Manzoni ◽  
Juan-Carlos Cano ◽  
...  
Keyword(s):  
Social Ties ◽  
Relay Node ◽  
Opportunistic Networks ◽  
Machine Learning Techniques ◽  
Delivery Ratio ◽  
Critical Element ◽  
Node Mobility ◽  
Additional Advantage ◽  
Promising Alternative ◽  
The Social

Opportunistic networks are becoming a solution to provide communication support in areas with overloaded cellular networks, and in scenarios where a fixed infrastructure is not available, as in remote and developing regions. A critical issue, which still requires a satisfactory solution, is the design of an efficient data delivery solution trading off delivery efficiency, delay, and cost. To tackle this problem, most researchers have used either the network state or node mobility as a forwarding criterion. Solutions based on social behaviour have recently been considered as a promising alternative. Following the philosophy from this new category of protocols, in this work, we present our “FriendShip and Acquaintanceship Forwarding” (FSF) protocol, a routing protocol that makes its routing decisions considering the social ties between the nodes and both the selfishness and the device resources levels of the candidate node for message relaying. When a contact opportunity arises, FSF first classifies the social ties between the message destination and the candidate to relay. Then, by using logistic functions, FSF assesses the relay node selfishness to consider those cases in which the relay node is socially selfish. To consider those cases in which the relay node does not accept receipt of the message because its device has resource constraints at that moment, FSF looks at the resource levels of the relay node. By using the ONE simulator to carry out trace-driven simulation experiments, we find that, when accounting for selfishness on routing decisions, our FSF algorithm outperforms previously proposed schemes, by increasing the delivery ratio up to 20%, with the additional advantage of introducing a lower number of forwarding events. We also find that the chosen buffer management algorithm can become a critical element to improve network performance in scenarios with selfish nodes.

Perception of Smokers: Results from the Tobacco Monitoring Switzerland

2011 ◽  
Vol 57 (2) ◽  
pp. 131-139 ◽  
Author(s):  
Theda Radtke ◽  
Roger Keller ◽  
Andrea Bütikofer ◽  
Rainer Hornung
Keyword(s):  
Social Ties ◽  
Tobacco Consumption ◽  
School Transitions ◽  
Prevention Measures

Aim: The purpose of the study is to present adolescents’ perceptions of smokers and non-smokers among 1015 Swiss adolescents. Method: The analyses are based on data from Tobacco Monitoring Switzerland, which is a survey of tobacco consumption in Switzerland. To measure the perceptions of smokers and non-smokers, respondents were asked to attribute a series of adjectives to each group. It was also recorded when respondents mentioned that “there is no difference between smokers and non-smokers.” Results: Results show that regardless of whether the adolescents smoked or did not smoke – with the exception of more sociable – the image of smokers was more negative than the image of non-smokers. Findings also indicated that regular smokers in particular often stated that there are no differences between both groups. Conclusions: Overall, the image of smokers is more negative than the image of non-smokers, with the exception of the attribute more sociable. This perception of smokers could be important for prevention measures in new contexts (e. g., school transitions), where smoking could be a means of establishing new social ties.

From Merging Histories to Emerging Identities: An “Asian” Museum as a Site of Pan-ethnic Identity Promotion

2007 ◽  
Vol 5 (2) ◽  
pp. 33-54
Author(s):  
Chong-suk Han ◽  
Edward Echtle
Keyword(s):  
Ethnic Identity ◽  
Asian American ◽  
Social Ties ◽  
Pacific Islander ◽  
American Identity ◽  
Asian Pacific Islander ◽  
Common Problems ◽  
Asian American Identity ◽  
Asian Pacific ◽  
A Site

In this paper, we explore the significance of the Wing Luke Asian Museum (WLAM) in Seattle, Washington as a site where pan-ethnic Asian American identity can be promoted by analyzing the strategies employed by the staff and artists of the WLAM to promote, foster and disseminate a larger Asian Pacific Islander American pan-ethnic identity. We argue that museums are a significant site that can “provide a setting for persons of diverse Asian backgrounds to establish social ties and to discuss their common problems and experiences.”

Erasure-Coding Algorithm in Mobile Low-Duty-Cycle Opportunistic Networks Based on Energy-Aware

2013 ◽  
Vol 24 (2) ◽  
pp. 230-242
Author(s):  
Liang-Yin CHEN ◽  
Zhen-Lei LIU ◽  
Xun ZOU ◽  
Zheng-Kun XU ◽  
Zhen-Qian GUO ◽  
...  
Keyword(s):  
Duty Cycle ◽  
Opportunistic Networks ◽  
Erasure Coding ◽  
Energy Aware ◽  
Low Duty Cycle

Periodic Intermittently Connected-Based Data Delivery in Opportunistic Networks

2014 ◽  
Vol 24 (3) ◽  
pp. 507-525 ◽  
Author(s):  
Lei WU ◽  
De-An WU ◽  
Ming LIU ◽  
Xiao-Min WANG ◽  
Hai-Gang GONG
Keyword(s):  
Opportunistic Networks ◽  
Data Delivery ◽  
Intermittently Connected

Routing protocols for opportunistic networks

2010 ◽  
Vol 30 (3) ◽  
pp. 723-728 ◽  
Author(s):  
Zhi REN ◽  
Yong HUANG ◽  
Qian-bin CHEN
Keyword(s):  
Routing Protocols ◽  
Opportunistic Networks
Sign in / Sign up

Export Citation Format

Share Document