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 20 of 44 for “"Collective Behaviour"”.
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Fish collective behaviour in flowing waters
L'abstract è presente nell'allegato / the abstract is in the attachment
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Collective behaviour of active particles with mean-field interaction
… mathematical foundations for the emergent collective behaviour of ants. That is, we rigorously derive a macroscopic partial differential equation (PDE) from a nonlinear interacting stochastic particle system used to model ants and use the PDE to provide a phase diagram for the collective …
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Coaches’ self-perceptions on how they influence collective behaviour in team sports
… Setting, Scaffolded Learning), and Coaching Behaviour that highlights how coaches perceived their contribution towards the development of a more synergistic team. Conclusion: In conclusion, coaches perceived themselves as environment builders that created environments promoting the …
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Collective behaviour monitoring in football using spatial temporal and network analysis: application and evaluations.
… To circumvent this weakness, applications of collective behaviour metrics applying spatial temporal and social network analyses to data in football have been trending over the last 10 years. The aims of this PhD were to: 1) establish the strengths and limitations of current research …
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Modelling and investigation of the role of anthropogenic noise on the collective behaviour of marine animals
… of birds to schools of fish, animals moving in a collective group has fascinated the world for centuries. The displays of interesting and dynamic behaviour has been captured numerically and analytically, providing key insights into the mechanisms behind different behaviours. Many marine animals …
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MULTI-AGENT SOURCE LOCALIZATION USING PASSIVE SENSING
Purposeful collective behaviour in multi-agent systems can be achieved from a mix of simple individualistic and social behaviours of an agent. Social behaviours are the basis of cooperation in multi-agent systems and are fundamental in achieving collective behaviour. Practical implementation of …
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Thermodynamic signatures for hexapeptides with propensity for phase separation and amyloid formation
… Phase separation and amyloid formation are collective behaviour properties, which may be encoded by the primary structure (sequence) of the protein. In this thesis, we investigate if there is an incipient signature of these collective behaviour properties in the potential energy landscape of …
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The impact of behavioural diversity in the evolution of multi-agent systems robust to dynamic environments
Behavioural diversity has been shown to be beneficial in biological social systems, such as insect colonies and human societies, as well as artificial systems such as large-scale swarm robotics applications. Evolutionary swarm robotics is a popular experimental platform for demonstrating the …
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Hydrodynamic behaviour of active and multi-species exclusion processes
… the effects of volume exclusion on large-scale collective behaviour in active and multi-species systems. We first focus on the effects of volume exclusion using the method of matched asymptotics on a multi-species exclusion process. This results in a cross-diffusion system of partial …
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Animal personality and the social context: the role of boldness and sociability variation in schooling fish
… their environment. In particular, consistent behavioural variation, known as animal personality, is a substantial driver of a range of important ecological and evolutionary processes. As most animal species are social for at least part of their lives and group living is common, a crucial link …
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Hydrodynamic interactions in narrow channels
… in every multi-body system as they determine the collective behaviour and coupling strength. Many well-known interactions like electro-static, van der Waals or screened Coulomb, decay exponentially or with negative powers of the particle spacing $r$. Similarly, hydrodynamic interactions between …
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Exciton Dynamics and Optical Properties of Lead Halide Perovskite Nanocrystals: From Nanorods to Nanocubes
… I focus on the opposite size regime, where collective behaviour dominates the optical properties. I develop a novel spectroscopy to pinpoint dephasing mechanisms that could reduce superradiant and coherent emission in order to promote rational design and future integration of these …
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Mathematical and Computational modelling of soft and active matter
The collective motion of organisms such as flights of birds, swimming of school of fish, migration of bacteria and movement of herds across long distances is a fascinating phenomenon that has intrigued man for centuries. Long and details observations have resulted in numerous abstract hypothesis …
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The role of hydrodynamic forces in synchronisation and alignment of mammalian motile cilia
… ciliated epithelium is a fascinating evidence of collective behaviour in nature. In many organs and eukaryotic organisms, thousands of microscale whip-like structures called 'motile cilia' beat aligned at the same frequency and in a coordinated fashion. This dynamics, known as 'metachronal wave', …
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Effects of Non-uniform Gaussian Curvature on the Collective Motion of Active Particles
Underlying curvature non-trivially affects the behaviour of active systems due to the incompatibility of order and non-zero curvature. While active particles on a plane have been extensively studied in the past, little work has been done to understand the effects of curvature on their collective …
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Short path length pQCD corrections to energy loss in the quark gluon plasma
Recent surprising discoveries of collective behaviour of low-pT particles in pA collisions at LHC hint at the creation of a hot, uid-like QGP medium. The seemingly conflicting measurements of non-zero particle correlations and RpA that appears to be consistent with unity demand a more careful …
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Machine learning for social event analysis : public perceptions during COVID-19 and collective violence in South Africa
… the sociology framework that theorises human behaviour during a public health crisis or societal instability. Using a mixed-methods research design, the study aimed to explore how machine learning grounded in social theories can enhance the understanding of human compliance, adjustment and …
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Money for something? Investigating the effectiveness of biodiversity conservation interventions in the Northern Plains of Cambodia
… drivers, and instead explicitly targeted the behaviour of local residents. The three PES programmes differed in the extent to which they rewarded changes in individual or collective behaviour, and whether or not they were managed locally or externally. Household-level, conditional, payments …
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Factors that Influence Mobile Bully-victim Behaviour on Mobile Social Networks: The Case of Facebook
… than conventional methods to commit antisocial behaviours today, our understanding of mobile bullying is still limited in the South African context. Although studies on bullying in general have been conducted, there has been limited focus on one type called bully-victims. Bully-victims are …
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Coexistence of Slow Magnetoacoustic Waves and Thermal Limit Cycles in a Coronal Bright Point
… as a function of time, which exhibit oscillatory behaviour. We detect and analyse 792 oscillation events with periods ranging from 3 to 240 min. We observe spatial coherence across regions and find, with increasing periodicity, collective behaviour on a spatial scale larger than an individual …
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