Filetype
The presence of birds in an ecosystem is often a good indicator of the overall biodiversity. Since birds can be hard to see, their sounds are often used instead to measure their presence. To automatically detect birds the most common method is to use a time-frequency representation together with a convolutional neural network. The most used time-frequency representation is called the spectrogram.
Bet-hedging is defined as a strategy that reduces the temporal variance in fitness at the expense of a lowered arithmetic mean fitness. After a few technical points, we will here argue that this definition of bet-hedging is badly suited for models with density- and/or frequency-dependent fitness. A strict interpretation cannot be employed; possibly, a modified definition is necessary.
Efficient policy instruments for reducing the emission of greenhouse gases are essential for the realisation of a successful climate policy. General economic policy instruments have the potential for providing efficient emission reduction as they equalise marginal costs for emission reduction between different actors. They also provide incentives for a great variety of responses such as energy eff
The purpose of this study is to research how consumers adopt discourses to make sense of their experiences with brand co-creation on social media platforms. We wish to bring forward how the interactions of the stakeholders involved in the co-creation process affects the consumers, through the theoretical lens of governmentality and exploitation. The literature review outlines the conversation tha
Interest in the use of renewable raw materials for the production of various compounds that can replace fossil-based products is steadily increasing. In this study, the extraction and separation of hemicellulosic oligomers from spruce, to be used for the production of polymers such as hydrogels, was investigated. The focus of the study was on gel filtration of the solution from steam treatment of
This paper treats four saxicolous species of Caloplaca occurring mainly in subtropical or semiarid regions in North and Central America, C. baueri, C. cinnabarina, C. rosei, and C. rubelliana. These species are mainly characterized by 1) a continuous to cracked areolate thallus, 2) thallus without marginal lobes, 3) areole margins broadly attached to the substrate, 4) cortex distinctly paraplecten
The purpose of our thesis is to, based on theory, investigate if venture capital investment generates value by increasing the credibility of Swedish start-up firms. If so, we continue by studying which factors influence the credibility value added in Sweden. The methodology is based on the concept of non-financial value added (NFVA) and we use primary data collected through a survey. We conclude t
The role of massive stars (those with masses greater than eight solar masses) in the chemical enrichment of galaxies and renewed star formation forms an important field of fundamental research in modern astrophysics. The complex nature of massive star evolution produces formidable challenges in furthering our understanding of the processes driving massive star evolution. Our ever-changing picture
In southern Siberia there is a culture of throat singing, a singing technique where a person can create two different and clearly audible tones at the same time. This throat singing phenomenon has flowed from the Tuvan republic in Russia out into the entire world. Persons of different ethnic origins sing and teach throat singing to persons from all kinds of nations, thus all kinds of persons come
This thesis investigates if China is a socialist economy or not. The topic, which has triggered many leading scholars, is highly interesting since institutions are pivotal to understanding a country’s economic performance. Previous studies have neglected the classic socialist literature, giving ambiguous interpretations of what is socialism. This thesis fills that gap through a multicriteria appro
In southern Siberia there is a culture of throat singing, a singing technique where a person can create two different and clearly audible tones at the same time. This throat singing phenomenon has flowed from the Tuvan republic in Russia out into the entire world. Persons of different ethnic origins sing and teach throat singing to persons from all kinds of nations, thus all kinds of persons come
The purpose of this study is to further investigate how market timing and cash need rationale affects stock performance subsequent to a seasoned equity offering and, by doing so, to expand on previous literature on the subject of seasoned equity offerings and stock performance. In this thesis a quantitative approach taken by estimating buy-and-hold abnormal returns subsequent to a seasoned equity
This thesis investigates the value relevance of accounting metrics in the Nordic stock markets from 2018 to 2022, applying and extending the Ohlson equity valuation model. Given the increasing importance of intangible assets in modern economies, we also explore how traditional accounting metrics explain stock prices, particularly for companies with high intangible asset ratios. Using a deductive r
This study examines the relationship between Environmental, Social, and Governance (ESG) performance and stock returns within the STOXX Europe 600 Index over the period 2019–2024. A balanced panel dataset was constructed by applying a frozen basket approach including 465 firms with continuous index membership and complete ESG data from Refinitiv Eikon. The analysis evaluates whether ESG scores, t
The present article is a translation—to Farsi—of an article by Dr. Ali Mirchi (postdoctoral research associate at the Department of Civil and Environmental Engineering, Michigan Technological University), Dr. Kaveh Madani (lecturer in Environmental Management at the Centre for Environmental Policy, Imperial College London) and Dr. Amir Aghakouchak (assistant professor at the Department of Civil an
The overall aim of this paper is to examine the claim that explanation is asymmetrical because causation is asymmetrical. The link between causal and explanatory asymmetry is focussed on. It is argued that many theories of causation account for causal asymmetry in a way that stops a causal model from contributing to our understanding of explanatory asymmetry. What appears to be generally advantage
