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Ända sedan 1781, när William Herschel upptäckte Uranus, så har astronomer letat efter planeter som ligger ännu längre ut. Solsystemet är ett stort ställe, så om man vill hitta någonting så krävs lite vägledning till var man ska leta. 2016 publicerade astronomerna Konstantin Batygin och Mike Brown en studie om små objekt utanför Neptunus, där de hade upptäckt att många av de här himlakropparnas banClustering of orbital characteristics for distant Solar System objects has been proposed to indicate the presence of a ninth planet. Simulations show that the planets orbit would have to have a mass of 5–10 Solar masses, a semi-major axis of 400–800 AU, an eccentricity of 0.2–0.5 and an inclination of 15–25°. Simulations of a planet scattering off a giant planet into a highly eccentric orbit, show

Elektroner, fast de inte kan ses med blotta ögat, har en grundläggande betydelse i vår vardag. Inom vår natur finns många exempel på system av elektroner som interagerar med varandra, så kallade flerelektronsystem: från materialet i elektronikkomponenter ner till några av de minsta beståndsdelarna i vår natur, atomer. Vi har utvecklat en Greenfunktion-teori för att beskriva material och flerelektrAn ensemble Green's function theory for many-electron systems with degenerate ground states, based on the von Neumann density matrix formalism, is proposed. The formalism is constructed without an assumption of an adiabatic connection. An ensemble analogue of Hedin's equations and the GW Approximation (GWA) is constructed. The formalism is applied to four model systems within GWA: a three-

This thesis examines Citizen Participation in Local Economic Development (LED) in Ntungamo District of Uganda. The LED approach is increasingly becoming an alternative strategy that aims at achieving the local dimension in the development process. LED identifies with local resource mobilization, allocation and use. As governments adopt the Private sector led development strategy, Public Private Pa

The purpose of this study is to further deepen the knowledge surrounding credit rating announcements and their impact on companies’ stock prices. Furthermore, the authors want to investigate whether the potential impacts differ between the US market and the European market, as well as previous to the financial crisis compared to post the financial crisis of 2007- 2009. The methodology used is an e

I dagens samhälle är ett hållbart alternativ till fossiltbränsle högt efterfrågat. Biobränsle är ett alternativ, men om detta alternativ ska vara optimalt, måste det härstamma från ett billigt och lättillgängligt material, som t.ex. cellulosa. Cellulosa finns i bl.a. växtcellväggar och är uppbyggd av sockerenheter (glykos) i en väldigt stabil struktur vilket är en bra egenskap när den sitter i växIn this thesis the enzyme Lytic polysaccharide monooxygenase (LPMO) is investigated. The LPMOs have captured the interest of the biofuel industry due to their ability to boost the breakdown of cellulose. Researchers have progressed in mapping out the mechanism behind this oxidative reaction. However, there are still many uncertainties concerning the intermediates involved and the role of certain a

It has been proven that music education can have many benefits to the development of children. It can improve communication, reasoning, memory, coordination, spatial intelligence and mathematical skills as well as enhancing emotional and intellectual development. The current market provides a broad range of instruments and professional devices, but it lacks creative tools useful to educate in musi

Denna studie syftar till att öka förståelsen för hur mellanchefer ser på arbetsrelaterad utbrändhet bland anställda samt hur de uppfattar sin roll i sammanhanget. Mellanchefernas syn på arbetsrelaterad utbrändhet är relevant att undersöka eftersom detta i sin tur torde påverka hur de utformar sitt ledarskap. Vidare syftar uppsatsen till att bidra med kunskap inom ämnet eftersom detta är ett relatiThis study aims to increase the understanding of how middle managers view work-related burnout among employees and how they perceive their own role in this context. It is relevant to examine the middle managers’ view on work-related burnout since their view may affect their leadership. Furthermore, this study aims to contribute with new knowledge to the existing literature since research in this a

The purpose of this thesis has been to challenge the idea of how the existing market for brewery equipment should look by creating a modular brewery. Hopefully this could reduce both shipping and costs in the future, as many who buy a brewing system for home use already have a vessel to brew with. The execution has followed Ulrich and Eppinger's product development methodology. By breaking dow

Bio-based plastics are increasingly considered as sustainable alternatives to fossil-based plastics. Up until now, their application in the food packaging industry has been limited. The purpose of this study is to investigate the applicability of bio-based polymer packaging films for bakery products, herbs and spices in the meal kit industry context and to assess their contribution towards a more

The purpose of this thesis is to explore the use of management control systems in companies operating in the sharing economy and to analyze the interdependencies between the different elements of the system. The empirical research is guided by the Malmi and Brown (2008) framework incorporating relevant criticism and other important factors. The research approach of this study is qualitative, emplo

Problem – While extensive research has been conducted on the liabilities of newness that new ventures experience, there is a gap in research focussing instead on the abilities of newness. Understanding the more positive aspects that derive from being new is important to understand how new ventures survive and compete with, or even outcompete, established firms. Aim – The aim of this study is to h

Grounded by organizational improvisation theory, and additionally informed by the concepts of agility and hypermodernity, I present an interview-based qualitative case study where communicators' and managers' perceptions towards strategy alignment, daily strategic work, communicators role in the organization and similar topics are analyzed through the prism of six components of organizatio

Syftet med uppsatsen har varit att beskriva symbiosen mellan samhällets normer och den mediala bilden av herr- och damhandboll i Sverige. För att göra detta har både en kvalitativ och kvantitativ innehållsanalys applicerats på två av Skånes mest lästa dagstidningar; Sydsvenskan och Skånska Dagbladet. Studien har utgått ifrån Lugis herr- och damlag. Materialet har studerats genom Iris Marion YoungsThe purpose of this thesis has been to describe the symbiosis between the norms of society and the media’s role in the portrayal of men and women´s handball in Sweden. To achieve this, both a qualitative and quantitative content analysis have been applied to two of Skåne’s most read newspapers; Sydsvenskan and Skånska Dagbladet. The study has focused on Lugi´s men’s and women´s team. The material

Restidskvot används som ett mått över kollektivtrafikens attraktivitet, många kommuner delar viljan att göra kollektivtrafiken just attraktivare för att öka andelen resenärer. Stockholms län visade i en rapport för över 25 år sedan ett samband mellan restidskvot och kollektivtrafikandel. Den här rapporten undersöker huruvida ett liknande förhållande existerar för medelstora kommuner och hur det saTravel time ratios are a popular way to measure the attractiveness of public transport. There is a demand within the Swedish municipalities for ways to make public transport more popular and increase the number of passengers. This study investigates if a connection between the ratio of travel time and the share of passengers travelling by public transport can be shown for medium sized municipaliti

Uttal i det engelska språket är inte alltid det lättaste för alla elever. Det som påverkas elevernas uttal är i vissa fall vilket modersmål de talar, och givetvis hur länge de har studerat engelska, samt hur mycket de har blivit exponerade för språket tidigare. De frågor som jag har ställt är om det finns fördelar med att kunna fler språk och om de fler språken påverkar elevers uttal i engelska, s

Daylighting is a free source of light that fosters a direct connection to nature. It has a great potential to enhance the health and productivity of the building inhabitants, to improve thermal and visual comfort in indoor spaces, and to increase energy efficiency in buildings. LTH study center (Lund, Sweden) is a compact building that was originally designed as a library. The building is nowadays

Social facilitation är ett fenomen som förklarar hur människors prestation förändras vid en social närvaro. Denna studiens syfte var att undersöka hur social närvaro i digital form påverkar prestation. Studien utgick från tidigare forskning som har visat att en social facilitation effekten kan uppstå vid digital närvaro i form av en video chat, där prestation på enkla uppgifter förbättrades och prSocial facilitation is a phenomenon that describes how performance changes depending on the presence of others. The purpose of this study was to investigate the ways that social presence in a digital form affects performance. It was based on previous research that has shown that a social facilitation effect can occur as a result of social presence in the form of a video chat, where performance on

The study is of qualitative character, adopting a constructionist perspective and following an abductive approach. The qualitative material has been gathered through a set of semi-structured focus group interviews. The study has been conducted by applying a conceptual framework, consisting of three theoretical dimensions for investigating the influencer phenomenon, namely; brand authenticity, pers

This paper investigates the impact of hosting refugees on long-run economic growth for 15 European nations between 1985-2014. It does so by implementing asylum- applications as a proxy for refugee flows and introducing the variable to the augmented Solow-Swan model. A dynamic panel model is then estimated using OLS, Fixed Effects and Generalised Methods of Moments (GMM) estimation methods. These m