Search results

Filter

Filetype

Your search for "*" yielded 533766 hits

Volcanic environment impact on andic properties and carbon dynamics in drained peatlands

The world’s soils are the most significant terrestrial C store. They store at least twice the amount of carbon as the atmosphere. Peatlands are the most significant long-term soil C store, even though they only cover about 3% of the terrestrial land surface and thus play a vital role in the global C cycle. Iceland is an island in the North Atlantic characterised by high volcanic activity, with vol

The Brand Behind the Binge: Understanding Streaming Series as Brands

Purpose: The purpose of this study is to contribute to an expansion of what can be considered as a brand. Specifically, this paper examines how streaming series can be seen as brands through a brand identity lens. Methodology: A qualitative research approach, with a social constructivist perspective, has been done by applying the Brand Identity Prism, with the additional element brand promise, to

A Fully Integrated Transformer-Coupled Active Power and Impedance Detector for WLAN 802.11ax 5 and 6 GHz Frequency Bands

This thesis proposes a fully integrated transformer-coupled active power and antenna impedance detector for WLAN 802.11ax 5 and 6 GHz frequency bands. The detector is integrated into a transceiver, utilising the receive chain to down convert sensed RF voltage and current and digitally calculate the active power and antenna impedance on-chip. The RF current measurement is realized by a sense windin

Påverkan på anläggningsbranschen till följd av onormala prisökningar på material och förnödenheter

Den svenska anläggningsbranschen har på senare år drabbats av betydande utmaningar till följd av onormala prisökningar på material och förnödenheter, vilket särskilt har haft en påverkan på fastprisentreprenader. Dessa kostnadsökningar har skapat en osäkerhet bland entreprenörer, särskilt på grund av bristen på tydliga riktlinjer och rättspraxis i kapitel 6 § 3 i standardavtalen AB 04 och ABT 06 s

Energy, economic, and environmental assessment of a solar-assisted heat pump system in Germany

Denna studie undersöker en parallell indirekt solassisterat värmepump (SAVP) för ett typiskt hushåll i Tyskland. Systemet utgörs av fotovoltaisk-termiska (FVT) solfångare och en värmepump (VP) för att täcka behovet av värme, varmvatten och hushållsel genom att använda solvärme, solel och nätel. Syftet var att utvärdera SAVP-systemets prestanda i Tysklands tre största städer för olika VPar med olikThis study investigates a parallel indirect Solar-Assisted Heat Pump (SAHP) system for a typical household in Germany. The system integrates Photovoltaic-Thermal (PVT) collectors and a heat pump (HP) to meet space heating, domestic hot water, and appliance electricity demands using solar thermal energy, solar electrical energy, and grid electricity. The objectives were to evaluate the thermodynami

Sulfur compounds in white and green liquor: Comparison of analytical methods for the determination of reduction degree

Introduction: The forest industry might not be the first thing to come to mind when thinking of chemistry, but the analysis of cooking chemicals in wood pulping involves many laboratory methods. Background: The chemical recovery cycle is an integral part of the Kraft process, which makes laboratory analyses of different steps of the process necessary. In the recovery boiler, sulfur is reduced to

Diabetessjuksköterskors erfarenheter av att främja hälsosamma levnadsvanor hos patienter med diabetes typ 2 i den regionala primärvården – en kvalitativ intervjustudie

Bakgrund: Det är välkänt att ohälsosamma levnadsvanor, såsom osund kost, fysisk inaktivitet, alkoholriskbruk och rökning är välkända riskfaktorer som kraftigt ökar risken för komplikationer vid diabetes typ 2. Trots insikten om riskerna kan det vara utmanande att ändra levnadsvanor, vilket gör diabetessjuksköterskans hälsofrämjande arbete avgörande för att stödja och motivera patienter till positi

A 2x Time-Interleaved 24-GS/s 12-Bit Resistive DAC

This study evaluates a 12-bit Time-Interleaved (TI) Digital-to-Analog Converter (DAC) operating at 24 GS/s, incorporating Return-to-Zero (RZ) scheming within its sub-DAC cores. Initially, the TI DAC demonstrates superior performance compared to a traditional single-channel DAC. However, the evaluation in this thesis reveals that the TI DAC is more sensitive to timing errors, such as clock skew and

S3P vs Arc Vapour deposition coating performance in machining 316L and Ti-6Al-4V

Surface finish and surface integrity is important to produce high quality parts in the manufacturing industry. This is controlled by properties on the cutting tools such as edge radius, edge preparation, coating etc. Solid carbide tools are often coated with PVD coating technologies where AlCrN is a common coating composition. Tooling for small parts machining often creates issues with coating as

The balancing act of private forest certification schemes and public policy : A case study of Sweden's governance strategies in addressing forest degradation challenges

Concerns about the degradation of forests in Sweden have given rise to several sustainability initiatives, coming both from the private and the public sector. Forest certification established itself in a Swedish context in the 1990s and its uptake has coincided with developments in public policy. By applying Cashore et al. 's (2021) theoretical and conceptual framework, highlighting the intera

Brandtekniska beräkningar och simuleringar i brandutredningar

Fire investigations are used to analyze fire scenes, typically with the aim of finding the cause of the fire or to understand the fire spread. Fire investigations can be the basis for the outcome of legal cases, future accident preventative work or the outcome of financial disputes and can thus be important and impactful. It is therefore of the outmost importance that they are conducted so that

Evaluation of LLMs for Hardware Test Generation

Testing electrical units and systems is an important part of the production process. The development and generation of hardware tests are a labor-intensive process that requires expertise and deep understanding of the system’s behavior. This thesis explores the application of Large Language Models (LLMs) in generating hardware test steps. The research employs a comparative analysis of several LLM

Oxidation behaviour of PVD coated tools for metal cutting applications

In the 20th century, big innovative steps were made in the cutting tool industry. Two Swedish companies, today Seco Tools AB and Sandvik Coromant, were some of the first companies to use cemented carbide as tool material. In 1969 Sandvik Coromant introduced a layer of titanium carbides on top of a cemented carbide substrate to improve its performance. Coating materials have been continuously devel

House Flora Valerie

Architecture and space in the scale of a family house can be about rounded shapes interplaying with straight lines and light. In today’s newly built houses in Sweden I sense a lack of variety in combinations of these elements. This project therefore aims to experiment with rounded shapes and straight lines together with light. A collection of the explorations act as the base to draw a house. A vil

Portfolio Optimization using Deep Reinforcement Learning models

Portfolio optimization involves selecting assets to maximize risk-adjusted returns, typically using linear methods like Mean-Variance Optimization (MVO). However, such approaches may not fully capture the complexities of financial markets. This study leverages recent advances in machine learning, specifically reinforcement learning with deep neural networks, to identify alternative methods that ma

User interface for presenting care recipients’ health data to their relatives

As the life expectancy continues to increase in Sweden, with an estimated increase of 5 years for women and 6 years for men between 2024 and 2070, there is an increasing need for solutions that enables elderly people, and individuals with a need for extra safety, to live an independent and healthy life. One solution that is under development, is a mobile social alarm in the form of a watch, which