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Assessing Terrorist Cyber Threats: Engineering a Functional ConstructMorgan, Deanne 12 1900 (has links)
Terrorist organizations and individuals make use of the Internet for supportive activities such as communication, recruiting, financing, training, and planning operations. However, little is known about the level of computer-based (“cyber”) threat such terrorist organizations and individuals pose. One step in facilitating the examination and assessment of the level of cyber threat posed by terrorist organizations and individuals is development of an assessment tool or methodology. This tool would guide intelligence collection efforts and would support and facilitate comparative assessment of the cyber threat posed by terrorist organizations and individuals through the provision of a consistent method of assessment across time, amongst organizations and individuals, and between analysts. This study leveraged the professional experience of experts to engineer a new functional construct – a structured analytical technique designed to assess the cyber threat posed by terrorist entities and individuals. The resultant instrument was a novel structured analytical construct that uses defined indicators of a terrorist organization/individual’s intent to carry out cyber attacks, and their capability to actually do so as measures of an organization/individual’s overall level of cyber threat.
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Advancing Cyberinfrastructure for Collaborative Data Sharing and Modeling in HydrologyGan, Tian 01 December 2019 (has links)
Hydrologic research is increasingly data and computationally intensive, and often involves hydrologic model simulation and collaboration among researchers. With the development of cyberinfrastructure, researchers are able to improve the efficiency, impact, and effectiveness of their research by utilizing online data sharing and hydrologic modeling functionality. However, further efforts are still in need to improve the capability of cyberinfrastructure to serve the hydrologic science community. This dissertation first presents the evaluation of a physically based snowmelt model as an alternative to a temperature index model to improve operational water supply forecasts in the Colorado River Basin. Then it presents the design of the functionality to share multidimensional space-time data in the HydroShare hydrologic information system. It then describes a web application developed to facilitate input preparation and model execution of a snowmelt model and the storage of these results in HydroShare. The snowmelt model evaluation provided use cases to evaluate the cyberinfrastructure elements developed. This research explored a new approach to advance operational water supply forecasts and provided potential solutions for the challenges associated with the design and implementation of cyberinfrastructure for hydrologic data sharing and modeling.
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A Study on Partially Homomorphic Encryption SchemesUnknown Date (has links)
High processing time and implementation complexity of the fully homomorphic
encryption schemes intrigued cryptographers to extend partially homomorphic
encryption schemes to allow homomorphic computation for larger classes of polynomials.
In this thesis, we study several public key and partially homomorphic schemes
and discuss a recent technique for boosting linearly homomorphic encryption schemes.
Further, we implement this boosting technique on CGS linearly homomorphic encryption
scheme to allow one single multiplication as well as arbitrary number of additions
on encrypted plaintexts. We provide MAGMA source codes for the implementation
of the CGS scheme along with the boosted CGS scheme. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2017. / FAU Electronic Theses and Dissertations Collection
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Wide-area route control for online servicesValancius, Vytautas 04 May 2012 (has links)
Accelerated by on-demand computing, the number and diversity of the
Internet services is increasing. Such online services often have unique
requirements for the underlying wide-area network: For instance, online
gaming service might benefit from low delay and jitter paths to client,
while online data backup service might benefit from cheaper paths.
Unfortunately, today's Internet does not accommodate fine-grained,
service-specific wide-area route control. In this dissertation, I achieve
the following goals: 1) improve the access to the routes, 2) quantify
the benefits of fine-grained route control, and 3) evaluate the
efficiency of current payment schemes for the wide-area routes.
* Improving access to wide-area route control. Online services
face significant technological and procedural hurdles in
accessing the routes: Each service in need to control the Internet
routes, has to obtain own equipment, Internet numbered resources, and
establish contracts with upstream ISPs. In this dissertation, I propose
and describe implementation and deployment of a secure and scalable
system which provides on-demand access to the Internet routes. In
setting such as cloud data center, the system can support multiple
online services, providing each service with an illusion of direct
connectivity to the neighboring Internet networks, which, for all
practical purposes, allows services to participate fully in the
Internet routing.
* Quantifying the benefits of fine-grained route control. Even
if online services are presented with wide-area route choice, it is not
clear how much tangible benefit such choice provides. Most modern Online
Service Providers (OSP) rely primarily on the content routing to
improve network performance between the clients and the replicas. In
this dissertation, I quantify the potential benefit the OSPs can gain if
they perform a joint network and content routing. Among other findings,
I find that by performing joint content and network routing, OSPs can
achieve 22% larger latency reduction than can be obtained by content
routing alone.
* Modeling and evaluating the efficiency of the current payment
schemes for wide-area routes. Finally, increasing diversity and
sophistication of the online services participating in the Internet
routing poses a challenge to payment models used in today's
Internet. Service providers today charge business customers a blended
rate: a single, "average" price for unit of bandwidth, without regard
to cost or value of individual customer's flows. In my dissertation, I
set to understand how efficient this payment model is and if more
granular payment model, accounting for the cost and value of different
flows could increase the ISP profit and the consumer surplus. I develop
an econometric demand and cost model and map three real-world ISP data
sets to it. I find that ISPs can indeed improve the economic efficiency
with just a few pricing tiers.
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Knowledge-based Cyberinfrastructures for Decision Making in Real-World DomainsDeshpande, Shubhanan V. 10 January 2011 (has links)
No description available.
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Applying User-Centered Design to Build Trust and Enable Cross-Agency Data Sharing to Better Understand the Prevalence and Context of Human Trafficking in Alberta, CanadaMuyres, Natalie Suzanne 05 1900 (has links)
This thesis describes a research study to understand the current state of human trafficking data collection practices and reporting in the province of Alberta, Canada, and gather end-user design considerations for cyberinfrastructure that will enable data sharing between multiple and diverse stakeholders. The research also examines the barriers to change and the needs of stakeholders to improve the collective understanding of human trafficking in the province. Virtual semi-structured interviews were conducted with nineteen organizations including law enforcement and community serving non-profit agencies. While the research resulted in design considerations for a cyberinfrastructure prototype, findings revealed the complexity of the human trafficking ecosystem in Alberta and suggestions for how the community of stakeholders can shift towards a sustained collaborative data sharing culture. This study responds to the need to collect actionable data from multiple sources to reflect the prevalence and context of human trafficking more accurately.
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