37 research outputs found

    A critical review of the routing protocols in opportunistic networks.

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    The goal of Opportunistic Networks (OppNets) is to enable message transmission in an infrastructure less environment where a reliable end-to-end connection between the hosts in not possible at all times. The role of OppNets is very crucial in today’s communication as it is still not possible to build a communication infrastructure in some geographical areas including mountains, oceans and other remote areas. Nodes participating in the message forwarding process in OppNets experience frequent disconnections. The employment of an appropriate routing protocol to achieve successful message delivery is one of the desirable requirements of OppNets. Routing challenges are very complex and evident in OppNets due to the dynamic nature and the topology of the intermittent networks. This adds more complexity in the choice of the suitable protocol to be employed in opportunistic scenarios, to enable message forwarding. With this in mind, the aim of this paper is to analyze a number of algorithms under each class of routing techniques that support message forwarding in OppNets and to compare those studied algorithms in terms of their performances, forwarding techniques, outcomes and success rates. An important outcome of this paper is the identifying of the optimum routing protocol under each class of routing

    Illegal labour practices, trafficking and exploitation:An introduction to the special issue

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    This is an introduction to the articles submitted to the special issue of Trends in Organized Crime on ‘Illegal Labour Practices, Trafficking and Exploitation’. The aim of the special issue is to draw together empirical research findings and theoretical accounts on the wider context to illegal labour and exploitation that has implications for identification, detection, prevention and regulation

    COVID-19 and organized crime: an introduction to the special issue

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    This is an introduction to the articles submitted to the special issue of Trends in Organized Crime on ‘COVID-19 and Organized Crime’. The aim of the special issue is to draw together a range of empirical studies from around the world to explore the implications of the COVID-19 pandemic for both organized criminals and law enforcement agencies. The pandemic required organized criminals to adapt their practice in light of government restrictions, but it also created new profitable opportunities. At the same time, however, COVID-19 posed significant challenges for law enforcement
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