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Är vi och vår Jord unik i universum? Ända sedan Galileo Galilei byggde den första stjärnkikaren så har vi blickat ut över alla de stjärnor som utgör vårt himlavalv. Människans naturliga nyfikenhet, vilken visat vägen till ekosystemets topp, skapar även en strävan att förstå vår tillvaro här på jorden. Under de senaste årtionderna så har ett flertal rymdfärder gett en ny syn på huruvida vi är ensamNumerical simulations have become an essential tool for studying particle-gas systems. One such system is the protoplanetary disk consisting of vast number of solid particles interacting with the surrounding gas. However, the particles tend to have a non-uniform distribution due to sedimentation, among other processes, creating an imbalanced workload for computers in different regions of the disk.

This thesis consists of the development of a concept for a new product, the primary purpose of which is to quickly and easily attach legally required tags to the ears of livestock pigs. The project was undertaken at Attention, a product development company based in Copenhagen. For reasons of food safety, EU regulation stipulates that all pigs that are moved from their place of birth must be tagged

Genom en simpel sökning på internet kan man nuförtiden hitta många vackra bilder på enskilda galaxer och på stora samlingar av galaxer, galaxhopar. Vårt solsystem befinner sig i Vintergatan, en spiralgalax inte helt olik många av dessa galaxer. Bilderna visar oftast ljuset som kommer från stjärnor och stjärnstoft, men galaxer består även av gas. Det är från massiva gasmoln i galaxer som stjärnor fThe interstellar medium of both local and distant disc galaxies is observed to be supersonically turbulent and the turbulent motion of the gas is thought to be important for galaxy formation and evolution, particularly as a key ingredient for star formation. Consequently, this generates a striking relation between the star formation rate (SFR) and gas velocity dispersion ($\sigma_{\rm g}$; a measu

Förtätning och byggande i urbana miljöer innebär stora utmaningar för alla inblandade parter, stadens invånare, verksamheter och besökare. Låg effektivitet- och produktivitetsutveckling i byggbranschen, tillsammans med ökade miljökrav är ett par av de främsta utmaningarna. Krav på effektiv ytanvändning förutsätter en välfungerande, effektiv logistik och materialhantering, med minimal påverkan på dDensification of cities and construction in urban environments poses major challenges for all parties involved, the city's residents, businesses and visitors. Low efficiency and productivity development in the construction industry, together with increased environmental requirements are a few of the main challenges. Requirements for efficient use of surface demands efficient logistics and mate

The aim of this study was to examine social workers experience on the Swedish statutory regulated program “contact family”. A contact family is a non-compulsory intervention to support children in families with social problems. The intervention contact family together with the intervention contact person is the most common non-compulsory intervention in the Swedish social service. The child lives

Bakgrund De ledande världsekonomierna kom 2010 överens om att begränsa den globala uppvärmningen till två graders ökning jämfört med förindustriella temperaturer i hopp om att det räcker för att undvika den värsta effekten av klimatförändringar. För att nå detta mål skulle det, enligt The Intergovernmental Panel of Climate Change, krävas en absolut reducering av utsläpp med 41–72 procent till 2050Background The world’s governments agreed in 2010 to work towards limiting global warming to a two-degree warming compared to pre-industrial temperatures with the presumption that this would suffice in order to avoid the worst effects of climate change. Meeting this goal would, according to The Intergovernmental Panel on Climate Change, require a reduction of global emissions by 41–72 percent by t

This Master’s thesis evaluates the performance of lightweight compression algorithm aimed for IoT sensor devices. These devices are most often battery driven and produce large amounts of sensor data which is sent wirelessly. Compressing the data could be a tool in decreasing the power usage of these devices. The algorithms were evaluated based on their compression ratio, memory consumption and CPU

In practice, Virtual Commissioning is a technical method within the au- tomation field where you can create a simulated twin factory to a real physical factory containing functional machines. The purpose of Virtual Commissioning is to move a great portion of the commissioning tasks to an earlier state in the project. To make this possible a simulation model of a system is created within a simulati

This master thesis investigates how to perform irrational decimation, the process of reducing the sample rate of a signal, for high throughput systems. The thesis work consists both an algorithmic part and an implementation part. In the algorithmic part, an algorithm that could cope with the requirements is found, and investigated due to different aspects. A group of filters that are investigate

Studien ämnade att undersöka vilka faktorer som påverkar individers inre motivation för träning och hur sambandet mellan dessa faktorer såg ut. Faktorerna som undersöktes var upplevd kompetens, upplevd autonomi, upplevd samhörighet, utseende-motiv, ansträngning, fitness-motiv, genomsnittligt spenderade timmar på träning, genomsnittligt spenderade timmar på arbete eller studier och generell self-efThis study was aiming to investigate which factors influence individual’s intrinsic motivation for exercise and what their correlation to it was. The factors examined was perceived competence, perceived autonomy, perceived relatedness, appearance motives, effort, fitness motives, average hours spent on exercise, average hours spent working or studying, and general self-efficacy. The study chose to

Syftet med den aktuella studien var att, utifrån en kritisk realistisk ansats, undersöka hur män upplever, förstår och reglerar sina känslor, såväl intrapsykiskt som i en interpersonell kontext. Ett särskilt fokus riktades mot socialiseringsprocesser av känslor under uppväxten, och på hur detta idag inverkar på männens känslomässiga förhållningssätt. Studiens design var mixad och utgjordes av en eThe aim of the present study, which was informed by a critical realist approach, was to investigate how men experience, understand and regulate their emotions, both intrapsychically and in interpersonal contexts. A specific aim was to shed light on the socialization of emotions during adolescence, and on how this today is affecting men’s emotional attitudes. The study's design was mixed and in

In this report, I investigated possible actions to reduce energy consumption for heating a house in Örnskoldsvik built 1955th. Is it possible to get down to low-energy-rating? Is it reasonable given the costs it entails? The alternatives studied are additional insulation in the basement, wall and the attic, replacement of windows and installation of heat recovery ventilation. After evaluating the

The aim of this study was to examine which impact it has on young people to grow up and live in Landskrona and their views of their future in light of the negative image that exists of the city and its people in the media. To get a better understanding we also choose to highlight what the youths consider significant in their lives. There were eight young people in the age 18-20 who participated in

I dagens samhälle räcker det inte med en produkts relativa överlägsenhet för att garantera dess framgång på marknaden. Snabb ekonomisk utveckling och avancerad teknologi har lett till knivskarp konkurrens på den globala marknaden. Genom ökad marknadstransparens och avancerade kommunikationer underlättas tillgänglighet till information samt genomförande av gränöverskridande transaktioner. Det har bIn today’s society, the relative superiority of a product is not enough to guarantee its success on a marketplace. Rapid economic development rates and advancing technology has led to a more competitive global market. Increased accessibility to information and cross-border transactions is a result of market transparency and advanced communication techniques. Creating product imitations or very sim

The flow of information must be more effective to optimize and improve the supply chain process. For the two case studies, there is a portal that manages the information. The contractor provides documents that the provider needs to submit quotation for a project purchase. All the handling of documents is made in the portal but the quote is sent by e-mail back to the contractor. For a purchase by c

Objectives: The first consensus report presented by the European Germ Cell Cancer Consensus Group (EGCCCG) in the year 2004 has found widespread approval by many colleagues throughout the world. In November 2006, the group met a second time under the auspices of the Department of Urology of the Amsterdam Medical Center, Amsterdam, The Netherlands. Methods: Medical oncologists, urological surgeons,

This work aimed at evaluate diagnosis and prognosis in soft tissue sarcoma (STS): In study I, 32K bacterial artificial chromosome (BAC) arrays and gene expression profiling were applied to 18 leiomyosarcomas and 31 undifferentiated pleomorphic sarcomas (UPS), with the aim of identifying molecular subtype signatures. Both the gains/losses profiles and the gene expression signatures revealed strikin

This thesis is based on 5 papers exploring the filtering problem in non-linear non-Gaussian state-space models together with applications of Sequential Monte Carlo (also called particle filtering) methods to the positioning in wireless networks. The aim of the first paper is to study the performance of particle filtering techniques in mobile positioning using signal strength measurements. Two di

In this article I address the significance of semiotic processes supporting early social interaction, communication and learning in the evolution of the modern human niche of infancy and childhood, known to be extended even in comparison with closely related hominin species. Human infancy and childhood is a biocultural niche, embedded within and causally contributing to the expansion and elaborati