Spoofed Networks: Exploitation of GNSS Security Vulnerability in 4G and 5G Mobile Networks

Includes supplementary materialFifth Generation New Radio (5G NR) represents a shift in mobile telephony whereby the network architecture runs containerized software on commodity hardware. In preparation for this transition, numerous 4G Long Term Evolution software stacks have been developed to test the containerization of core network functions and the interfaces with radio access network protocols. In this thesis, one such stack, developed by the OpenAirInterface Software Alliance, was used to create a low-cost, simplified mobile network compatible with the Naval Operational Architecture. Commercial off-the-shelf user equipment was then connected to the network to demonstrate how a buffer overflow vulnerability found in Qualcomm Global Navigation Satellite System chipsets and identified as CVE-2019-2254 can be leveraged to enable a spoofed network attack. The research also yielded an extension of the attack method to 5G NR networks.http://archive.org/details/aplaceholderreco1094567451Lieutenant, United States NavyApproved for public release. Distribution is unlimited

LTE D2Dを統合した災害時同報配信システムの提案と評価

指導教員：中村　嘉

Cyclone Sidr and Its Aftermath: Everyday Life, Power and Marginality

This PhD research is about power struggle and marginality in peoples’ everyday life in the aftermath of the cyclone Sidr. This research explores how everyday vulnerabilities of a coastal community, which is ignored in the powerful knowledge framing, limit peoples’ ability to withstand a cyclone. It reiterates the idea that the conditionality, which makes an individual, a group or a community susceptible to a natural event, is a legacy of our engagement with the environment and, thus, scrutinise our knowledge on that particular event. From a theoretical interest in environment-society studies, my work strives to understand affected communities’ quotidian experiences of their livelihoods, after being affected by Cyclone Sidr, through rebuilding, relief support, access to natural resources in land, water and forest, alternative income opportunities, patron-client networks, and local power dynamics. The whole research is based on an ethnographic account in three proximate villages, Gabtola, Mazer Char and Sonatola Model Village, adjacent to the Sundarbans. This research examines the following research questions – i) How are communities’ everyday livelihoods, mediated through their broader societal, political and economic networks, informing their ability to cope with a cyclone event, and thus connected with cyclone knowledge?; ii) How are the complex interface of environmental change, livelihood options and power dynamics reciprocally linked with cyclone rhetoric?; and iii) Whose views are reflected in the development of cyclone knowledge and practice in Bangladesh? Being a native Bengali speaker, knowing local dialects, having previous work experience of academic research on disadvantaged and rural communities, power dynamics and development, I was in an advantageous position to carry out this highly sensitive work. This research contributes to the idea of vulnerability and resilience by portraying the importance of considering local power dynamics in shaping environment-society relationship. In addition, this research also enlightens on local development and economic aspects through unpacking issues in regard to relief and rehabilitation, fishing and forest use. These theoretical contributions, reciprocally, back up methodological underpinnings of it. More importantly, this research explores the interface of cyclone, power and livelihoods and echoes voices of marginal people with a view to them having their space in policies

Performance measurement in construction research & development: The use of case study research approach

The process of finding solutions to the research problem does not follow a clear sequential approach, but often takes unexpected turns due to the uncertainties of the research process and its outcomes. However, appropriate research design would be able to identify any problems and pitfalls that the researcher may come across during the process. In this regard, consideration of the research philosophy pertaining to the study helps a researcher in choosing the appropriate approach for a study. Not only the philosophical stance, but also the research problem under investigation and its underling circumstances influence the selection of a research approach. Accordingly, this paper discusses the factors that drive the selection of a case study as the research approach with particular reference to the use of single case study to undertake an in depth inquiry regarding the impact of performance measurement towards construction research and development. Further, this paper discusses the incorporation of multi-phase, multi perspective and multi-method approaches within the single case study to build valid theory