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We study the rise of the so-called “gig economy” through the lens of Uber and its drivers in the United Kingdom. Using administrative data from Uber and a new representative survey of London drivers, we explore their backgrounds, earnings, and subjective well-being. We find that the vast majority of Uber drivers are male immigrants, primarily drawn from the bottom half of the London income distrib
The All Pairs Shortest Path (APSP) problem is ubiquitous in computer science. The problem consists of finding for any vertex pair, the weighted shortest paths in a network with real-weighted edges. The problem has been studied thoroughly, both for dense graphs, where the number of edges can be quadratic in the number of vertices, and for sparse graphs, where the number of edges is considerably low
Humanitarian aid workers (HAWs) face increasing risks in conflict zones, with 2024 marking the deadliest year on record. International humanitarian organisations (IHOs) must address this trend to continue delivering aid and protecting HAWs. This study investigates how IHOs adapt to the evolving risks in these contexts and explores challenges that adaptation measures may entail. A qualitative resea
The increasing global demand for sustainable energy has sparked interest in combining renewable technologies to leverage their synergies. This thesis presents a pre-feasibility study of a combined offshore wind and wave energy farm located off the coast of Galicia, Spain. In collaboration with Wavepiston, a Danish developer of wave energy converters (WECs), the study evaluates the integration of t
Global food systems are increasingly vulnerable to climate change, energy volatility, and geopolitical disruptions—threatening the security and stability of perishable supply chains. This thesis investigates the potential of aseptic packaging technologies, specifically ultra-high-temperature (UHT) treatment and sterile filling, as a means to reduce energy consumption and enhance resilience in the
Denna uppsats undersöker hur fem icke-statliga organisationer (NGO) framställer händelserna kring Sea-Watch 3-fallet sommaren 2019. Räddningsfartyget hölls kvar till havs i över två veckor efter att ha undsatt migranter utanför Libyens kust, utan att någon stat erbjöd en säker hamn. Studien utgår från en kombination av två teoretiska ramverk: normmodellen och liminalitet. Normmodellen används för This thesis examines how five non govermental organisations (NGO) represent the events surrounding the Sea-Watch 3 case in the summer of 2019. The rescue vessel remained at sea for over two weeks after saving migrants off the coast of Libya, without any state offering a safe port of disembarkation. The study draws on a combination of two theoretical frameworks, the norm model and liminality. The n
Purpose: The purpose of this thesis is to investigate how marketing professionals make sense of the ethical and CSR implications of using GenAI in marketing and how they assign responsibility for its potential consequences. Exploring further and understanding the gap between organizational obligations and individuals' ethical judgment is crucial to developing effective strategies for responsib
In supplier sustainability management today there is a gap between the volume of compliance work that stricter EU regulation imposes on companies and the manual methods available to handle it. The consequence is that gap analyses between a buyer's Supplier Code of Conduct (SCoC) and the documents provided by suppliers are postponed or left undone, leading to long lead times and bottlenecks in
In his dissertation Blomberg (2004) investigates into how the care manager reform is incorporated into organizational practice in the care of older people in Sweden. He shows that it is made through different lines of argumentations following one another. Through applying neo-institutional theory this can be understood as “solutions seeking problems to solve” rather than the other way around. In t
Purpose of this paper: The cluster thinking in the humanitarian world has been suggested as a solution to the lack of coordinated disaster response in the past 10 years. Clusters on diverse functions including sheltering, logistics and water sanitation can be viewed as an effort of functional coordination, i.e. horizontal coordination within a functional area. The purpose of this paper is to contr
Nonspecific structural chromosomal aberrations (CAs) can be found at around 1% of circulating lymphocytes from healthy individuals but the frequency may be higher after exposure to carcinogenic chemicals or radiation. The frequency of CAs has been measured in occupational monitoring and an increased frequency of CAs has also been associated with cancer risk. Alterations in DNA damage repair and te
This paper investigates the quantification of FPGA resources for the implementation of closed-loop combustion control algorithms. Specifically, the study focuses on methods for their in-cycle execution and control of the combustion in real-time. A National Instruments Xilinx Virtex-5 platform was used for the quantification of the resources.Closed-loop combustion control obtains feedback from fast
Purpose: Supply chain (SC) professionals and their competence play a key role in creating value and competitive advantage for companies. A considerable amount of this competence is developed at work, but little is known about how this takes place. Drawing on constructivist learning theory, the authors investigate how SC professionals develop their competence at work. Design/methodology/approach: T
Introduction: Despite increasing recognition of pediatric acute-onset neuropsychiatric syndrome (PANS), its neuropsychological underpinnings remain limited, particularly in relation to obsessive-compulsive disorder (OCD) symptoms. PANS manifests abruptly with severe OCD and/or eating restrictions alongside concurrent neuropsychiatric symptoms, causing distress and functional impairment. This study
Modern solid-state klystron modulators generate high-voltage, high-power pulses by discharging energy stored in a capacitor bank. Such modulators require at least one capacitor charging unit supplying the energy released in pulsing. Traditional capacitor charging structures rely on AC/DC front-end units based on passive diode rectifiers in conjunction with high-frequency resonant converters. Howev
Introduction: The recent Covid-19 pandemic has renewed interest in studying the impact of environmental factors on the airborne transmission of viral infectious diseases. Human rhinovirus is the main cause of acute respiratory infections, primarily driven by young children who have an average of 6 -10 infections annually, while healthy adults typically experience 2–3 infections per year. Although
The evolution of male courtship rituals has traditionally been attributed to female mate selection, but may also hinge on male investment strategies in sexually cannibalistic species. In many spiders, males perform energetically costly courtship rituals to increase acceptance by females and minimise the risk of sexual cannibalism. However, due to sperm competition, males may invest less energy whe
Increasing tree species diversity is known to enhance soil organic carbon (SOC) stocks, but its effect on SOC stability remains a critical uncertainty for climate mitigation. Through examination of a subtropical karst forest diversity gradient in southwest China, we reveal a fundamental shift in SOC stabilization mechanisms using physical fractionation, 13C nuclear magnetic resonance spectroscopy
