Evaluating the Impact of Jamming on Group Communication Protocols in Tactical Environments

2021 ◽  
Author(s):  
Mauro Tortonesi ◽  
Maggie Breedy ◽  
Lorenzo Campioni ◽  
Eelco Cramer ◽  
Anders Hansson ◽  
...  
Keyword(s):  
Group Communication ◽  
Communication Protocols ◽  
The Impact

A Tale of Two Entities

2021 ◽  
Vol 2 (2) ◽  
pp. 1-21
Author(s):  
Hossam ElHussini ◽  
Chadi Assi ◽  
Bassam Moussa ◽  
Ribal Atallah ◽  
Ali Ghrayeb
Keyword(s):  
Power Flow ◽  
Power Grid ◽  
Communication Protocols ◽  
Charging Infrastructure ◽  
Electric Vehicle Charging ◽  
Public Data ◽  
Simulation Based ◽  
Charging Stations ◽  
The Impact ◽  
Ev Charging

With the growing market of Electric Vehicles (EV), the procurement of their charging infrastructure plays a crucial role in their adoption. Within the revolution of Internet of Things, the EV charging infrastructure is getting on board with the introduction of smart Electric Vehicle Charging Stations (EVCS), a myriad set of communication protocols, and different entities. We provide in this article an overview of this infrastructure detailing the participating entities and the communication protocols. Further, we contextualize the current deployment of EVCSs through the use of available public data. In the light of such a survey, we identify two key concerns, the lack of standardization and multiple points of failures, which renders the current deployment of EV charging infrastructure vulnerable to an array of different attacks. Moreover, we propose a novel attack scenario that exploits the unique characteristics of the EVCSs and their protocol (such as high power wattage and support for reverse power flow) to cause disturbances to the power grid. We investigate three different attack variations; sudden surge in power demand, sudden surge in power supply, and a switching attack. To support our claims, we showcase using a real-world example how an adversary can compromise an EVCS and create a traffic bottleneck by tampering with the charging schedules of EVs. Further, we perform a simulation-based study of the impact of our proposed attack variations on the WSCC 9 bus system. Our simulations show that an adversary can cause devastating effects on the power grid, which might result in blackout and cascading failure by comprising a small number of EVCSs.

If You Criticize Us, Do It in Concrete Terms: Linguistic Abstraction as a Moderator of the Intergroup Sensitivity Effect

2019 ◽  
Vol 38 (5-6) ◽  
pp. 680-705 ◽  
Author(s):  
Silvia Moscatelli ◽  
Francesca Prati ◽  
Monica Rubini
Keyword(s):  
Social Change ◽  
Group Membership ◽  
Group Communication ◽  
Effect Study ◽  
Communicative Strategies ◽  
Linguistic Abstraction ◽  
Effective Group ◽  
The Impact ◽  
Group Member

This research examined whether linguistic abstraction in group-directed criticisms moderates the intergroup sensitivity effect. Study 1 ( N = 76) showed that criticisms coming from an out-group member and formulated in concrete terms—which imply lower generalizability and stability of the information transmitted—provoked less negative reactions compared with out-group criticisms formulated in abstract terms. Linguistic abstraction did not affect reactions to in-group criticism. In Study 2 ( N = 77), receivers of concrete criticism from an out-group representative attributed less hostile intentions and prejudice to the critic, and this mediated the impact of critic group membership and linguistic abstraction on negativity toward criticism. Participants also reported more favorable attitudes toward the out-group as a whole when out-group criticism was formulated in concrete terms. This research underlines that linguistic abstraction can facilitate or obstruct effective group communication, and has important implications for the development of communicative strategies aiming to promote social change.

Ordered Delivery of Messages in Group Communication Protocols

2012 ◽  
Author(s):  
Dilawaer Duolikun ◽  
Ailixier Aikebaier ◽  
Tomoya Enokido ◽  
Makoto Takizawa
Keyword(s):  
Group Communication ◽  
Communication Protocols

scholarly journals A Source Like Any Other? Field and Survey Experiment Evidence on How Interest Groups Shape Public Opinion

2021 ◽  
Author(s):  
Andreas Jungherr ◽  
Alexander Wuttke ◽  
Matthias Mader ◽  
Harald Schoen
Keyword(s):  
Interest Groups ◽  
Interest Group ◽  
Large Scale ◽  
Group Communication ◽  
Survey Experiment ◽  
Moderating Effects ◽  
The Public ◽  
High Profile ◽  
Low Profile ◽  
The Impact

Abstract Interest groups increasingly communicate with the public, yet we know little about how effective they are in shaping opinions. Since interest groups differ from other public communicators, we propose a theory of interest group persuasion. Interest groups typically have a low public profile, and so most people are unlikely to have strong attitudes regarding them. Source-related predispositions, such as credibility assessments, are therefore less relevant in moderating effects of persuasive appeals by interest groups than those of high-profile communicators. We test this argument in multiple large-scale studies. A parallel survey and field experiment (N = 4,659) establishes the persuasive potential of low-profile interest groups in both controlled and realistic settings. An observational study (N = 700) shows that substantial portions of the public are unable to assess interest group credibility. A survey experiment (N = 8,245) demonstrates that credibility assessments moderate the impact of party but not interest group communication.

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