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Qualitative comparison of bird and bat wakes has demonstrated significant differences in the structure of the far wake. Birds have been found to have a unified vortex wake of the two wings, while bats have a more complex wake with gradients in the circulation along the wingspan, and with each wing generating its own vortex structure. Here, we compare quantitative measures of the circulation in the
Reversible changes of the height of a polymer brush containing phenylboronic acid were studied. The polymer brush thickness underwent reversible changes of 0.5-1 nm, in response to the changes in composition of the contacting aqueous phase from deionized water to bicarbonate buffer and vice versa, apparently due to the conformational transition of the weak polyelectrolyte to the more extended elec
Amelogenin is an extracellular matrix protein which has an important role to play in enamel formation during tooth development. The need for amelogenin for research purposes in order to be utilized for its many potential applications have resulted in the rise of the production of recombinant amelogenin. So far, the most optimal expression system used for the production of recombinant amelogenin is
The goal of this master's thesis is to detect and position sharp sounds using Axis speakers with built-in microphones. Sharp sounds of special interest are gunshots. The system needs at least five speakers to function and is designed for usage in indoor environments. The project follows a pipeline in order to position sound sources containing recording, synchronisation, detection of gunshot in
Semantic Web technology has attracted much interest for its ability to integrate and deliver information from different sources, and increasingly, geodata are being published as triple data according to the graph structure laid out in the Resource Description Framework (RDF). Although the Semantic Web already contains a large volume of geotagged information, there is still a lack of suitable geome
The rate of global urbanization in the 21st century has been unprecedented especially in the African and the Asian continents. Urbanization typically causes a removal of natural vegetation and replacement of same with impervious and non-evaporative urban materials with high heat capacity and low solar reflectivity. The alteration of the natural land cover due to urbanization causes a change in the
Today we can observe an increasing spatial divide as some large urban regions and many more medium-sized and small regions face growing problems such as decreasing labour demand, increasing unemployment and an ageing population. In view of these trends, this book offers a better understanding of the general characteristics and specific drivers of the geographies of growth. It shows how these may v
The fishing industry is vital for global food security, providing nutrient-rich food, supporting livelihoods, and contributing to economic growth. As the global population continues to grow, it is essential to approach fishing in a sustainable way and preserve marine ecosystems. The United Nations has recognized overfishing as a significant issue. For 2017, it was estimated that about 34% of fish
Seagrasses provide valuable ecosystem services, benefitting both marine species and humans by providing coastal protection and erosion control which is significant as 898 million people lived in low-elevation coastal zones in 2020. However, seagrasses worldwide have been declining and in Sweden, the eelgrass Zostera marina has decreased heavily since 1980. One cause for seagrass loss in temperate
This thesis investigates the profitability of converting microalgae into biofuel using hydrothermal liquefaction the goal is to produce 100 000 tons of bio-oil each year. It explores various microalgae species and cultivation methods, identifying Chlorella vulgaris with a rotating attached biofilter as the optimal choice due to its high biomass concentration, eliminating the need for dewatering an
Kanari Domna Mining geosocial data from Flickr to explore tourism patterns: The case study of Athens Social media are providing a new type of geo-tagged data that by processing them, new types of knowledge can be generated and used by decision-makers in different areas including tourism. It includes e.g., identifying touristic areas that are not prioritized or advertised by touristic authorities
With climate change, the frequency in climate extremes such as drought, heavy rainfalls, and extreme temperatures is predicted to increase. These extremes can potentially stress and damage vegetation over large areas, leading to altered carbon cycle, vegetation greenness, albedo, and shifted species composition. This study focuses on two different types of extreme events; frost drought caused by w
The thesis aims to develop knowledge of the physics and thermodynamics behind a nonlinearity in an air cooling system for an plastic extruder machine. To accomplish this, both nonlinear and linearized models were set up in Matlab and Simulink environments based on the laws of physics and thermodynamics. Simulations were run to achieve and analyze step responses, and different PI control structures
The emergence of artificial intelligence, especially machine-learning methods, challenges the set of legal guarantees put in place in Europe to combat discrimination and ensure equal treatment. This paper will focus on cases of algorithmic discrimination in the context of recruitment as a business practice. Particular in the field of recruitment of workers, which has always been a field where EU n
The aim of the thesis is to investigate and implement an algorithm that can automate the porting of the layout from one technology node to another technology node. The layout optimization of any design block can be implemented for better performance. The primary task of the project is to develop a tool that can optimize and port the complete layout design that reduces the time and effort of manual
Solar energy is an important component of sustainable urban development. However, it is still not reaching its full potential due to several reasons. One of them is a lack of free tools based on open geodata capable of estimating solar energy (daylight) metrics on building features, e.g.,windows, in the early stages of the urban planning process. To fill this gap, a design and implementation of th
