Every year, the ACM Special Interest Group on Artificial Intelligence sponsors a student essay writing contest. This article presents a clear perspective on last year's winners, which represent a diverse collection of opinions on artificial intelligence.
By Johanna Schacht, January 2019
How can we promote an internet that respects human rights? Investing in autonomous infrastructure built and operated by politically motivated techies, who put their skills at the service of the public interest, may be the answer.
By Stefania Milan, July 2018
In an ad hoc wireless network where wired infrastructures are not feasible, energy and bandwidth conservation are the two key elements presenting challenges to researchers. Limited bandwidth makes a network easily congested by the control signals of the routing protocol. Routing schemes developed for wired networks seldom consider restrictions of this type. Instead, they assume that the network is mostly stable and that the overhead for routing messages is negligible. Considering these differences between wired and wireless network, it is necessary to develop a wireless routing protocol that limits congestion in the network [1, 5, 8, 9, 10, 11].This paper proposes minor modifications to the existing Ad hoc On Demand Vector (AODV) routing protocol (RFC 3561) in order to restrict congestion in networks during a particular type of Denial of Service (DoS) attack. In addition to this, it incurs absolutely no additional overhead [4]. We describe the DoS attack caused due to Route Request (RREQ) flooding and its implications on existing AODV-driven Mobile Ad hoc Networks (MANET) [2, 14]. To combat this DoS attack, a proactive scheme [12] is proposed. We present an illustration to describe the implications of RREQ flooding on pure AODV and the modified AODV protocols. To quantify the effectiveness of the proposed scheme, we simulated a DoS [6] attack in a mobile environment and study the performance results.
By Dhaval Gada, Rajat Gogri, Punit Rathod, Zalak Dedhia, Nirali Mody, Sugata Sanyal, Ajith Abraham, September 2004
