Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"ABAC"”.
-
Phase behaviors of ABAC tetrablock terpolymers
The thesis focuses on the composition and the asymmetric effect on the phase behaviour of the tetrablock terpolymers using poly(styrene-b-isoprene-b-styrene-bethylene oxide) (SISO) as the model system, synthesized via a living anionic polymerization method and characterized with NMR, GPC, TEM, …
-
Comparison of Aeration Strategies for Optimization of Nitrogen Removal in an Adsorption/Bio-oxidation (A/B) Process with an Emphasis on Ammonia vs. NOx (AvN) control
… DO Control, Ammonia Based Aeration Control (ABAC), and Ammonia vs. NOx (AvN) control. AvN in 1) fully-intermittent and 2) intermittently-aerated MLE configurations was compared to DO Control and ABAC, each with continuous aeration, in an MLE configuration. The study also examined operation of …
-
Contingency management techniques and smoking cessation in college students
… study using a single subject reversal design (ABAC) in which baseline phases were alternated with either fixed criterion or shaping using an escalating schedule of reinforcement. The order of administration of intervention phases was determined randomly. Each intervention phase lasted 5 days …
-
Towards Practical and Secure Decentralized Attribute -Based Authorization Systems
We first show that existing ABAC theory does not properly account for the asynchronous nature of open systems, which allows attackers to subvert these systems by forcing decisions to be made using inconsistent system states. To address this, we develop provably-secure and lightweight consistency …
-
Self-assembly of Block Polymers: Self-Consistent Field Theory and Monte-Carlo Simulations
… polymers, ABC triblocks, ABCA tetrablocks, and ABAC tetrablocks. In each of the cases, we have performed extensive SCFT calculations and compared the resulting predictions with experimental results to further the understanding of experimentally observed morphologies. While investigating the …
-
Indeterminacy-aware prediction model for authentication in IoT.
… models and Attribute-Based Access Control (ABAC). To implement and evaluate our framework, we first generate datasets, in which the location of the users is a main dataset attribute, with the aim to analyse the role of user mobility in the performance of the prediction models. Next, multiple …
-
Optimizing Enhanced Biological Phosphorus Removal at WRRFs: Impact of Low DO Operation and Full-Scale Strategies
… of ammonia-based aeration control (ABAC), Hampton Roads Sanitation District's Virginia Initiative Plant (VIP) observed a 69 percent decrease in average dissolved oxygen (DO) concentrations, alongside a 53 percent reduction in average effluent total phosphorus (TP) concentrations from …
-
Secure and scalable blockchain mechanisms for IoT applications
… for IoT networks, called the trust-based ABAC mechanism for IoT networks (TABI). TABI integrates edge computing and blockchain technology to mitigate risks from malicious devices and offload computational tasks to edge layers. It operates on Hyperledger Fabric (HLF), a permissioned …
-
Extensible Model and Policy Engine for Usage Control and Policy-Based Governance: Industrial Applications
… conserves an Attribute-Based Access Control (ABAC) baseline using a standard policy language. The policy engine also introduces another type of policies used to govern attribute values, and to define and drive custom lifecycles. Thus, different extensions of UCON+ can be realised within the …
-
Intensification of Biological Nutrient Removal Processes
… aeration ammonia-based aeration control (ABAC) or ammonia vs. NOx (AvN) control will result in an additional nitrogen removal simply by reducing the DO setpoint resulting in simultaneous nitrification/denitrification (SND). This work demonstrated that lower DO did not always improve TIN …
-
Privacy-Aware Risk-Based Access Control Systems
… existing access control models such as RBAC and ABAC and that it can be realized using a declarative policy language with a number of advantages including usability, flexibility, and scalability. 4. We evaluate our approach using several industrial relevant use cases, elaborated to meet the …
-
Nuclear fission and social fusion: the impact of the Dounreay Experimental Research Establishment on Caithness, 1953-1966
This thesis examines the impact which Dounreay Experimental Research Establishment had on Caithness between 1953 and 1966. This thirteen-year period saw extensive change which affected the community, the built environment and employment patterns in the region: three related areas which form the …
-
Retrofitting the domestic built environment: investigating household perspectives towards energy efficiency technologies and behaviour
Retrofitting the UK domestic built environment presents an excellent opportunity to improve its energy performance. However, retrofitting homes is a complex challenge conflated by multiple factors. Due to this complexity, a shortfall exists between the full potential and realised adoption of energy …
-
Multiphase Fountains
In this thesis we present experimental studies and theoretical models on the rise height and entrainment of axisymmetric multiphase fountains. The aim of this thesis is to improve our understanding of these fundamental flows frequently observed in industry and nature. In each chapter we present a …
-
Functional gene analysis in cultured vertebrate cells using siRNA mediated gene silencing
Die Expression von Genen kann sequenzspezifisch durch small interfering RNAs (engl. kleine interferierende RNAs, siRNAs) in einem als RNA Interferenz (RNAi) bezeichneten Prozeß herunterreguliert werden. Die Anwendung von RNAi Technologie erlaubt die systematische Analyse von Genexpression und …