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Hypervelocity stars, på svenska hyperhastighetsstjärnor, är stjärnor som observerats med så hög hastighet att de kan lämna vår galax, Vintergatan. Den första hyperhastighetsstjärnan upptäcktes av R. Brown m. fl. (2005), och sedan dess har många fler upptäckts. J. G.Hills presenterade (1988) en teori om att hyperhastighetsstjärnor härstammar från binära stjärnor (två stjärnor som kretsar varandra) In this thesis, I investigate if the binaries that are being tidally disrupted by means of the Hills mechanism, producing hypervelocity stars, could have been transported to the galactic centre by two-body scattering. To survive a scattering event, the binary must be hard, meaning that the binding energy of the binary is higher than the kinetic energy of the collider. If the binary is soft, the bi

Vind, sol och en hel del dynga Innan den sydafrikanska dyngbaggen Kheper lamarcki kan kasta sig över sin gourmetmåltid måste den ta sig bort från dynghögen och den hastigt ökande konkurrensen. Det mest effektiva sättet att åstadkomma detta på är att backa i en rak linje. Hur lyckas man med detta om man är en dyngbagge? Studier har visat att dessa baggar har förmågan att utnyttja himlavalvets olikOnce the South African dung beetle Kheper lamarcki has constructed its ball of dung, it strives to escape the competition at the dung pile and locate soft ground to dig down. The most efficient way to do this is to move away along a straight path. One way to achieve this is by using celestial cues as orientation references. However, when these cues fail to provide sufficient directional informatio

The Convention of the Rights of the Child has become Swedish law as of January 1st 2020. The convention raises every childs’ right to development, of which spiritual development is one part. The matter of spirituality and existential questions has had a marginalized role in Swedish research. The interest is however increasing. The poor mental health amongst children and young people in Sweden is,

Purpose: This study aims to explore the phenomenon of social influence in driving environmentally friendly tourist behaviors. Methodology: To obtain deep and diverse insights about the phenomenon, 20 semi-structured interviews were conducted with respondents representing 13 nationalities. Results: This study revealed that contemporary tourists obtain two conflicting messages from their social en

This thesis examines the resistance created towards the prospects of a mine in the agricultural countryside of Skåne, Sweden. A growing discourse in Swedish media emphasizes mineral extraction as a vital part of a green future due to minerals’ importance for promotion of new modes of energy. At the same time, a resistance has been mobilized against such test drilling in Skåne. Based on anthropolog

Studier visar på att det finns bristfällig forskning om arbetsterapeuters arbete med sexuell hälsa. Syftet: Att undersöka arbetsterapeuters arbete med sexuell hälsa hos individer med intellektuell funktionsnedsättning inom daglig verksamhet och vuxenhabilitering. Metod: Kvantitativ enkätstudie där 30 stycken arbetsterapeuter rekryterades via icke-slumpmässigt bekvämlighetsurval och snöbollsurval. Studies show that there is insufficient research on occupational therapists (OT) work on sexual health. Purpose: Investigate OT’s work on sexual health with individuals with intellectual disabilities in day-centres and adult habilitation. Method: A quantitative survey study where 30 OT’s were recruited via nonrandom convenience selection and snowball selection. Quantitative data were analyzed with

The interest around blockchain technology (BT) has spread for the last decade from academia and industry. Meanwhile, there is a lack of studies on the acceptance and use of blockchain within the Nordic countries. This research provides an exploration of blockchain acceptance and use combined with the identification of factors generating value through this technology. We highlight factors that infl

Idag konsumeras det som aldrig förr, samtidigt som hållbarhetsfrågan tar allt större utrymme i debatten kring konsumtion. Det har lett till att konsumenten söker efter andra konsumtionsalternativ, ur vilket fenomenet delningsekonomin har växt fram. Delningsekonomin har i många fall betraktats som ett optimistiskt konsumtionsalternativ, eftersom det för med sig mindre klimatpåverkan än den traditio

Aim: This thesis aims to develop a deeper understanding of how junior and senior preschool teachers engage in knowledge sharing and learning in a public sector organisation as well as how their knowledge sharing and learning behaviour is being challenged. Literature Review: Our literature review focuses on knowledge and knowledge sharing and relates it specifically to the public sector which corre

Den här uppsatsen behandlar förflutna framtider. I fokus för undersökningen står en större svensk liberal och urban kultursfär som inkluderar delar av Sverige och Svensk-Amerika under 1900-talets fyra första decennier. Undersökningens källmaterial utgörs av nyårskrönikor i Dagens Nyheter och Svenska Amerikanska Posten under årsskiftena 1904 till 1935. Metodiskt undersöks materialet komparativt genThis thesis examines the cultures of the future (framtidskulturer) during the first four decades of the 20th century in a large Swedish urban and liberal cultural sphere including Sweden and Swedish America. The source material consists of New Year chronicles in the newspapers Dagens Nyheter and Svenska Amerikanska Posten between 1904 and 1935. By examining the historical futures in the Swedish an

This thesis explores the link between hybrid warfare and the notion of armed attack in that it asks the question of whether the notion of armed attack is competent to encompass hybrid warfare. The thesis is approached in two parts. In the first part, Chapter two describes the legal framework surrounding the notion of armed attack as a threshold in triggering the use of force in self defence. The t

Det begagnades gagn I Sverige köps det årligen möbler för 26 miljarder kronor. En stor del av möblerna slängs vid flytt eller när de anses vara uttjänta. Experter menar att om ett kontor köper in återanvända möbler istället för nya sparar de ungefär 2 000 000 kronor och minskar klimatpåverkan med omkring 60 ton koldioxid vilket motsvarar drygt sju passagerarflygplan till Thailand tur och retur. This thesis was conducted to quantitatively describe environmental and economic benefits from reuse of office furniture together with a status analysis of methods used to calculate that kind of data. Information was gathered from literature and interviews with industry players. The results from the different sources were initially presented separately and later compiled to demonstrate what they in

Båtklubben i Kiviks hamn har länge upplevt problem med stora vågor i hamnbassängen. Denna studie ämnar att fastslå vilka vågförhållanden och fenomen som ger upphov till dessa problem, samt att föreslå åtgärder. En undersökning av vågklimatet utanför hamnen utförs med hjälp av en enkel modell, kallad SPM, som beräknar en tidsserie vågor utifrån meteorologisk och geografisk data. För att kartlägga vThe yacht club in Kivik marina has experienced problems with large waves in the harbour basin for a long time. This study aims to determine the wave conditions and phenomena that give rise to these problems, and to propose measures. An investigation of the wave climate outside the harbour is carried out using a simple model, called SPM, which calculates a time series of waves based on meteorologic

Organizations are currently facing an image-centered culture, where people are overwhelmed by pictures. Due to the high level of intensity and constant exposition to such material more and more people are normalizing the images that they are exposed to. Organizations’ communication is then lost inside the background noise, failing to be remembered by their target audience and especially to contrib

Mål och syfte: Syftet med detta examensarbete är att undersöka byggherrens behov och nytta av att styra bygglogistiken i ett tidigt skede samt förstå hur hanteringen av bygglogistiken kan påverka valet av upphandlingsstrategi. Problemformulering: Idag finns det en gråzon i byggbranschen mellan logistiklösningarna och de behov som byggherren ska uppfylla. Byggherren har stora möjligheter att påverPurpose: The purpose of this master thesis is to investigate the developer’s needs and benefits of managing building logistics at an early stage and understand how the management of construction logistics can influence the choice of procurement strategy. Problem: Today, there is a gray area in the construction industry between the logistics solutions and the needs that the developer must fulfill.

This thesis is an investigation into the construction of foliations that admit locally defined harmonic morphisms into the complex plane i.e. minimal horizontally conformal foliations of codimension two. The primary aim of this thesis is to test a conjecture posed by Sigmundur Gudmundsson regarding the compactness and semisimplicity of the subgroup generating the foliation. We provide experimental

Vid utformning av vägar idag är det inte enbart vägytan och vägkroppen som beaktas utan hela vägmiljön inklusive vägens sidoområde. Detta ställer helt nya krav på utformning av slänter och diken. Den främsta utmaningen är hanteringen av vattnet och här är innerslänten ett vitalt instrument för utmaningen. Vattenhanteringen i vägområdet är en huvuduppgift för att kunna säkerställa en vägs säkerhetWhen designing roads in today’s time, it is not only the road surface and the structure that are being taken into consideration, but also the whole road environment including the side region of the road. This emphasizes completely new requirements on the geometrical design of slopes and ditches. The main task is the management of the road water and the inner road slope is a vital instrument for th

Organizations still have a way to go in terms of fostering collaboration internally. Many large organizations suffer from the fragmentation of employees, which negatively impacts the organizations’ performance. Literature has noted that hackathons have become a proven way of bringing individuals together. Using Granados & Pareja-Eastaway’s (2019) framework as inspiration to dissect the hackath

Nowadays, people spend 90% of their time indoors, thus creating a healthy indoor environment for occupants is of great importance. Lighting in office spaces is an important aspect when it comes to occupant health and well-being. Research in the field of lighting has mostly been focusing on the visible light spectrum and image-forming (IF) processes. However, with the discovery of melanopsin contai