Sökresultat

Understanding how sympatric species partition resources is critical for biodiversity conservation, particularly in vulnerable ecosystems. As Arctic ecosystems undergo rapid climate change, understanding how animals use space and select habitats becomes essential for effective conservation planning. Advances in technologies can now provide high-resolution data on species movements and habitat use,

Accurate monitoring of dissolved organic carbon (DOC) in lakes is essential for understanding aquatic carbon dynamics, assessing lake ecosystem health, and supporting water resource management. While remote sensing offers scalable alternatives to in-situ monitoring, machine learning models often struggle to generalise across systems. This thesis investigates the potential of the eXtreme Gradient B

The transition towards renewable energy technologies is essential to mitigate climate change. However, the intermittency of Variable Renewable Energy (VRE) such as wind and solar creates seasonal imbalances in the electricity supply. To address this, inter-seasonal energy storage solutions are needed. Produced via electrolysis from excess electricity, hydrogen offers a promising storage medium. Ho

Meteoritnedslag har spelat en grundläggande roll som ytmodifierande processer på jorden och andra himlakroppar. De har haft stor betydelse för omstruktureringen av jordskorpan, bassängbildning samt bildan- det av magmatisk och hydrotermal aktivitet. Av de cirka 200 nedslagsstruktur som identifierats på jorden har de flesta bildats på land, medan betydligt färre exemplar finns bevarade från marina Impact cratering has played a fundamental role as a surface modifying process on Earth and other celes- tial bodies. It has significantly influenced crustal reshaping, basin formation and the development of magmatic ac- tivity and hydrothermal systems. Of the roughly 200 impact structures that have been identified on Earth, the ma- jority occurred on land, with significantly fewer known examples p

Annual cropping systems dominate agricultural grain production, but have been linked to several key environmental issues, such as loss of biodiversity and pollution of groundwater. Newly developed perennial grains may offer solutions to some of those problems. Their longer roots and growing seasons theoretically enable them to act as sinks of atmospheric carbon. This study set out to compare soil-

Denna kandidatuppsats undersöker hur medelstora och stora svenska företag uppfattar datakvalitet vid design och implementering av AI-drivna chattbotar för internt bruk. Studien bygger på fem semistrukturerade intervjuer med yrkesverksamma som varit direkt involverade i utvecklingsarbetet och belyser hur organisationer ser på faktorer som datans noggrannhet, fullständighet och tillförlitlighet. Res

Spindelsamhällens förändring över 20 år Vilka spindelarter som finns inom ett område kan bero på många olika faktorer, som till exempel geografisk plats, habitattyp, temperatur och diversitet av fysiska strukturer i området. En torr äng i Skåne kommer till stor del att ha en annan uppsättning av arter än en skuggig granskog i Jämtland. Detta beror på att olika arter har anpassat sig till olika miRecent studies have documented large declines in the abundance and diversity of a few well-studied groups of organisms. However, it is unclear how representative the results are for other, less studied groups such as spiders and other ground-dwelling arthropods. A few recent studies have reported large declines in spider abundance, but these have been performed in highly disturbed settings, and ma

Semi-natural grasslands in Scandinavia have been created by humans since many millennia ago, but the agricultural intensification in the last few centuries caused them to decline heavily. Accordingly, the biodiversity associated to these open, nutrient-poor habitats declined as well and many remnant populations are slowly declining and threatened to go extinct. In this study, I focused on declin

— Infektioner i blodomloppet är en livshotande diagnos som kräver snabb behandling. I mitt examensarbete har jag undersökt hur diagnostiska modeller kan förbättras med hjälp av maskininlärningsbaserade prediktionsmetoder. Det långsiktiga målet är att bidra till utvecklingen av kliniska stödverktyg som kan förkorta svarstider och bidra till en minskad användning av antibiotika. — Infektioner i blo

The main drivers of the alarming biodiversity decline are land use and land use change, primarily due to agriculture. It is therefore important to assess the impact on biodiversity caused by production of food and to do so, life cycle assessment (LCA) is a method widely used. Since the UNEP-SETAC provisionally recommended the method by Chaudhary et al. (2015, updated 2018) for impact assessments o