Sökresultat

Background: while access to safe water in Uganda increased between the early 1990s and 2010, current studies are showing that many safe water sources are not being properly maintained and so end up being abandoned. Since the maintenance of safe water sources is under the jurisdiction of water user committees (WUCs), this study seeks to measure the ability of water user committees in mitigating a d

As part of the development of a process for production of a lignin-rich oil that can serve as a renewable feedstock to existing petroleum refineries, hydrogen assisted depolymerization of lignin in filtered black liquor has been investigated. This process offers the possibility to reduce fossil emissions from transportation by utilization of the largest renewable carbon resource in Sweden, namely

Luminiscensdatering är ett viktigt verktyg inom geologin för att tidsbestämma geologiska avsättningsprocesser i jordens historia. Grundförutsättningen för en korrekt datering är att luminiscenssignalen genererad från ett mineral nollställs vid kontakt med solljus. Vid insamling och preparering av provmaterial är det därför av yttersta vikt att ingen ljusexponering inträffar som eventuellt nollstälLuminescence dating provides an important tool in geology to reconstruct geological depositions events in the Earth’s past. The basic assumption for a reliable dating is that luminescence generated from minerals resets at the time when it was last exposed to sunlight. The accuracy and precision of luminescence dating is therefore strongly dependant on preparation of the sediment to be in dark cond

Agriculture is necessary for providing nutrition to a growing global population. However, many unsustainable agricultural practices contribute to climate change, cause local pollution and disrupt natural biological and nutrient cycles. Conservation agriculture (CA) is one of the many practices that have been proposed to meet the challenge of sustainable agricultural production. CA aims to restore

Our world is experiencing accelerated ecological destruction and social injustices on different scales and multiple levels. Unchecked economic growth has been criticised as causing this since the 1970s, but the dominant sustainable development paradigm has perpetuated the belief that economic growth and environmental protection can go hand-in-hand. In response degrowth has emerged in the last deca

Kan svenska rapsrester bli ett nytt alternativ till sojafärs? Allt eftersom jordens befolkning ökar utnyttjas större delar av jordens yta till åkermark. Forskningen visar tydligt att växtbaserade livsmedel har mindre miljöpåverkan än animaliska produkter. Rapsfrökaka är en restprodukt från rapsoljeproduktionen med högt proteininnehåll som har lovande egenskaper för att bilda ett nytt växtbaserat lThe combination of a growing global population and a limiting amount of farmland creates a need for new innovative food products to achieve a global sustainable development and a healthy population. Rapeseed press cake is a low-cost by-product of rapeseed oil production and is very high in protein and fiber. The rapeseed protein contains high concentrations of S-amino acids as methionine and cyste

This thesis assesses the impact of innovation on employment, using a selection of International Patent Classifications (IPC) as proxies for technological development. It uses a 15-country, 8-sector and 15-year dynamic panel dataset, specifying a system Generalized Methods of Moments (GMM) econometric model to test this relationship. It specifically evaluates whether advances in robotics – measured

Under en period mellan 1700-talet till början av 1900-talet upptecknades en mängd folksånger och danslåtar i Östergötland, min hembygd. Syftet med detta arbete är att artikulera kunskap om en scenmusikalisk process som i sin tur haft som mål att synliggöra detta material: genom att välja ut, arrangera, programsätta och tillsammans med medmusiker framföra östgötska visor har jag i en processbeskrivDuring the 17th, 18th and 19th centuries, many folk songs and dances were collected in the Swedish county of Östergötland, which is my home county. The purpose of this investigation is to articulate knowledge about how this historical material can be communicated. Therefore, in this case study I describe and discuss my selection, arranging, rehearsing and performing some of these songs, and how I

This thesis compares the performance of the first-differenced maximum likelihood estimator (FDML) and the Blundell-Bond continuously-updating system GMM estimator of the autoregressive parameter in an AR(1) dynamic panel model without exogenous covariates, particularly focusing on the close-to-non-stationary case. This case is far from trivial, as a high degree of persistence is the norm rather th

In this thesis a Mesos framework is built to enable dynamic scaling of a collection of HTTP application programming interfaces (APIs) in response to a varying request workload. Several scaling algorithms ("policies") that run on top of this Mesos framework are designed and built. Furthermore, a performance evaluation framework is designed and built. The evaluation framework is used to ev

Syftet med den här studien är att få en ökad förståelse för hur en man respektive en kvinna beskriver sina ledaregenskaper och ledarstilar jämfört med vad de faktiskt gör i praktiken. För att besvara syftet har vi utgått från följande frågeställningar: hur överensstämmer en mans och en kvinnas beskrivningar om sina ledaregenskaper och ledarstilar med vad de gör i praktiken samt hur en man och en k

To maintain a high position accuracy in robots is essential in today’s industry. Because of different factors, as for example wear and tear, the robots may need to be recalibrated after a while to maintain their high precision. Today the calibration can be costly. The robot is often sent away to be calibrated and will therefore cause stoppages in production, and if the calibration is performed in-

This study explores the Open Access phenomenon from the perspective of the commercial scientific publishing industry. Open Access has been appropriated by commercial publishers, once sceptical opponents of the concept, as a means among others of distributing scholarly publications. The aim of this study is to highlight a possible explanation as to how this has come about by looking at the internal

The use of industrial robots in manufacturing often requires good calibration approaches and tools to obtain and maintain the desirable accuracy of the robot, for the robot to be able to execute a task in a satisfactory manner. For high-accuracy methods of calibration, it is necessary to first identify the robot’s stiffness parameters. This thesis will focus on a method that is based on a clamping

The recent shift towards energy-dense and nutrient-poor diets has led to an increase of diseases such as obesity, diabetes and cardio-vascular disease. Due to poverty, geographical remoteness and lack of cultivable land, Kiribati experiences a double burden of malnutrition with high levels of NCDs among adults, and undernourishment among children. Since mothers are generally responsible for choosi

Konkurrensen är hög på den alltmer homogeniserade retail-modebranschen vilket kräver att företagen differentierar sig gentemot sina konkurrenter. Företagen fokuserar ofta på att stärka sitt varumärke genom att försöka omvandla frontlinjepersonalen till fullgoda varumärkeambassadörer. Frontlinjepersonalen har det huvudsakliga ansvaret för kundens uppfattning av varumärket i servicemötet. Därför för

Psykisk ohälsa hos piloter och flygpersonal har fått ökad uppmärksamhet sedan flygkraschen i de franska alperna med Germanwings flight 9525 år 2015. Det har lett till en ökad diskussion och medvetenhet samt utformande av olika program för Pilot Peer Support initierade av management på flygbolag, samt oberoende av piloter själva genom exempelvis fackligt arbete. Metoden för studien baseras på kvaliMental illness among pilots and cabin crew has received increased attention since the crash in the French Alps with Germanwings flight 9525 in 2015. This has led to increased discussion, awareness and the shaping of programs for Pilot Peer Support, both initiated by management of airlines and independently by pilots themselves through for example union work. The method for the study is based on qu

Detta arbete undersöker och utvärderar nya metoder för att minska minnesanvänd- ningen i kompilatorer genererade med metakompilatorsystemet JastAdd.JastAdd is a tool for generating programming language compilers. These compilers generally use more memory than other compilers for the same language. In this thesis we have categorized the memory use of two JastAdd-generated compilers, to identify opportunities to reduce their memory use. We present several optimizations for reducing the memory use of these compilers. These include changes to the