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In Sweden, the 10th most common occupation is professional cleaning. Cleaning workers are exposed to many risk factors including high physical workload and the development of new-onset asthma and other types of respiratory symptoms. This master thesis has been a part of a research project at the division of Ergonomics and Aerosol Technology (EAT), Lund University, in which the health aspect of cle
This project started as an exploration of robotics with the goal of developing a product concept utilizing the technology in a way that makes sense. By looking at the application areas of today, recent technological developments and its speculated future applications, the focus became on developing a robot for elderly care. Through research about the ageing process and Swedish elderly care system
Research in vehicle-to-vehicle communication and the Vehicular Ad Hoc Network (VANET) are two major fields of growing interest. The advent and recent development of these concepts foster evolution of the new paradigm of the transportation system, widely known as Intelligent Transport System (ITS). Among the numerous challenges in adopting VANET for ITS, modeling the radio channel is a vital one, b
Stadsförnyelseprojektet H+ i Helsingborg överväger en sorterande systemlösning för avlopp, vilken skulle kunna bidra till att kommunen helt eller delvis uppfyller sin miljöprofil. Fördelar med klosettvattensortering är bland annat att biogasproduktion gynnas och att växtnäringsämnen lättare kan återvinnas, i jämförelse med ett konventionellt system. I litteraturen är det dock tydligt att miljönyttThe urban renewal project H+, in the city of Helsingborg, is considering a source separating wastewater system, which could potentially help the municipality to fully or partly reach environmental targets. Advantages of blackwater separation include increased production of biogas and a more convenient recycling of plant nutrients, in comparison to a conventional system. However, existing literatur
It is critical for the durability of power modules to maintain low enough temperature in their components (IGBTs and diodes). The goal of this project was to examine methods to estimate the junction temperature of components in an IGBT module in real-time. After studying literature on the subject, a model was developed using Fostercircuits and feedback from the NTC-thermistor in the IGBT-module. T
De senaste årtiondenas teknologiska utveckling har haft en stor inverkan på journalistbranschen. Inte minst har sättet nyheter produceras och konsumeras förändrats i grunden. Fler aktörer tävlar om konsumenter på ett fält där journalister tidigare haft ett relativt ohotat informationsmonopol. En konsekvens är att journalistbranschen har kommersialiserats, vilket gjort att läsare jagas på ett nytt
Research in wind power generation technology is a topic of high relevance in the context of renewable energy systems. This project aims to develop and implement an automatic operation and control system for an experimental vertical axis wind turbine (VAWT) located at Lunds Tekniska Högskola, in Sweden. Supervisory control and data acquisition systems (SCADA) are increasingly considered indispensab
Within the field of fire protection engineering, there are different buildings classes depending on their safety needs. Building class 0 includes buildings which are considered to have the highest protection need and the prescriptive regulations are not applicable in these kinds of buildings. The building class was introduced 2012 and there are still not a consensus of how it should be handled. Ba
In the wake of alarming reports from IPCC, policy makers all over the world have recognized offshore wind power to become an essential contributor in the future renewable energy system and battling of climate change. However, many countries including Norway lack extensive areas of shallow water suitable for conventional offshore wind, hence an interest for deep offshore solutions has arisen. One o
Material science has become an important research area in order to fulfill today’s requirements on lighter, cheaper and more sustainable materials. The European spallation source is a research center based on the world’s most powerful neutron source, which will enable new possibilities to evaluate material properties down to an atomic level. The linear accelerator (Linac), accelerates with help of
The research of the thesis was aimed towards investigating the possibility of implementing different control strategies for power electronic converters in a simulation environment. The different control modes were fitted into flexible models that were interconnected in various grid topologies. The software used in order to develop the simulation environment is called Dymola and presently does not
As the society gets more and more dependent on electrical energy, it is highly desirable to ensurepower supply at all times. In case of events of natural disasters, simple technical faults or human mistakes, any power system or a large part of it can suffer a blackout. An electrical shutdown is a crisis situation where recovery should happen as quickly as possible. During the restoration after the
In Sweden the installed wind power has increased rapidly in recent years and the trend looks to continue. New law, in which Svenska Kraftnät will lend investment capital for expansion of grid capacity to renewable energy, will facilitate the connection of wind power plants to E.ON’s regional grid network. With more wind power connected to the grid network losses will look different.In this report,
Den här uppsatsen handlar om hur sång kan användas som en språkutvecklande metod i SFI-undervisning. Syftet är att undersöka om det finns fördelar med att använda sång i uttalsundervisning för SFI-studenter samt hur studenterna upplever språkundervisning där musik integreras. Forskningsfrågorna som vi arbetat efter lyder: Vilken effekt har sång i SFI-undervisning på studenternas uttal? Hur uppleveThis study examines how singing can be used as a language development method in second language acquisition for immigrants in Sweden. The aim is to investigate whether there are advantages of using singing when teaching pronunciation to second language students, and how students experience education where music is integrated. Our research questions are: What effect has singing on students’ pronunc
Vind har blivit en alltmer accepterad källa till förnyelsebar energi och utnyttjas idag världen över. Vindenergi har fördelen av nästintill inga utsläpp av växthusgaser, men allmänheten har i vissa uttryckt oro över det buller som associeras med vindkraftverk. For att möta detta missnöje har kommuner infört föreskrifter som begränsar ljudnivåerna vid bostadshus belägna i närheten av vindkraftverk.Wind has become an increasingly accepted source of renewable energy and is currently exploited worldwide. Wind energy has the advantage of close to zero green-house gas emissions, however one of the key concerns the public has about wind farm development is noise emissions. To address these local governments have introduced noise regulations, which limit noise levels at residential buildings locat
I takt med att våra städer växer och förtätas och när klimatförändringarna samtidigt bidrar till ökad och mer intensiv nederbörd ökar behovet av fungerande dagvattenhantering. I arbetet med att utveckla hanteringen av dagvatten och samtidigt integrera den i stadsbilden har lösningar inom konceptet ”hållbar dagvattenhantering” implementerats på flera håll i världen, bland annat i stor utsträckning
Denna uppsats behandlar anställnings- och diskrimineringsskyddet för arbetstagare med funktionsnedsättning i en uppsägningssituation. Skydd för arbetstagare med funktionsnedsättning finns i såväl arbetsrätten som i diskrimineringsrätten. I LAS (Lag (1982:80) om anställningsskydd) finns regler som begränsar en arbetsgivares möjlighet att säga upp sina arbetstagare. För att en uppsägning ska vara fThis thesis examines the employment protection and the protection against discrimination for a disabled person facing dismissal. Legal protection for disabled employees can be found both in labour law and in anti-discrimination law. The Employment Protection Act (SFS 1982:80) contains paragraphs that limit employer’s possibilities to dismiss his or her employees. A valid dismissal according to th
Studiens syfte är att undersöka vilka utmaningar som finns för nyetablerade aktörer att skapa konkurrensfördelar på en tidigare monopolistisk marknad. Den svenska marknaden för fordonsbesiktning avreglerades år 2010 och karaktäriseras av en homogen kärntjänst med begränsningar till horisontell och vertikal differentiering. Verksamheten är starkt regelstyrd med en oelastisk efterfråga, vilket skapa
The aim of this study is to examine what rhetorical themes and features are present in the speeches of Julius Caesar’s De bello Gallico and De bello civili. The investigation is based on the 172 speeches found in De Bello Gallico and the 83 speeches found in De Bello Civili. Lausberg’s Handbook of Literary Rhetoric: A Foundation for Literary Study provides the theoretical framework for the analysi
The spectrum of a linear, constant coefficient operator $A$ can help us characterize the system $\dot{x}=Ax$ satisfactorily, but in the case of a nonlinear dynamical system such methods are not suitable. In this thesis we discuss the insufficiency of only studying the eigenvalues along the Jacobian of the solution trajectory and discuss possible indicators to better characterize such systems. In
