Sökresultat

Filtyp

Din sökning på "*" gav 531444 sökträffar

Pattern Reconfigurable MIMO Antennas for Multiband LTE Operation

Nowadays, multiple antennas are becoming widely used in small mobile terminals as they can significantly improve wireless communication performance in terms of link reliability and spectral efficiency. Also, pattern reconfiguration is another new trend for antenna design as it enables the antennas to adapt to different propagation and user scenarios. However, due to the limited space in the termin

The Sales & Supply process: factors leading to deviations

This is a project that have been conduct at IKEA of Sweden in Älmhult. Due to the limitation of time for this project, the study has only been conduct for one several Home Furnisher Business (HFB) within IKEA. The purpose of the project was to provide suggestions on how to improve the Sales and Supply process in order to enhance balancing of demand and supply. Within the concerned HFB there are

High-­dose rate intraluminal brachytherapy for oesophageal cancer using MR imaging: A clinical implementation

Strålbehandling är en vanlig behandlingsteknik för behandling av cancer. Behandlingen kan levereras på två olika sätt: internt eller externt. Vid extern strålbehandling bestrålas tumören med en strålkälla som befinner sig utanför kroppen. Vid intern strålbehandling, även kallat brachybehandling, placeras strålkällan inuti kroppen, i eller i nära anslutning till tumören. Själva tumören får därmed mPurpose: The aim of this study was to investigate a new methodology for brachytherapy of oesophageal cancer using magnetic resonance (MR) imaging for treatment planning. That includes finding a suitable oesophageal applicator that can be visualised on MR images and to create dose and fraction schedule that should be used brachytherapy treatments. Material and Methods: A total of six patients were

Flattening filter free volumetric modulated arc therapy for extreme hypofractionation of prostate cancer - Decreasing the treatment time and reducing the impact of prostate motion

I skrivande stund är sju olika cancercentra i Sverige, däribland Skånes Universitetssjukhus i Lund, mitt uppe i en gemensam randomiserad studie som undersöker behandling av prostatacancer med två olika strålningsscheman. Patienterna i studien blir slumpvis tilldelade antingen en standardbehandling, där de får en liten mängd strålning vid 39 olika tillfällen, eller en så kallad hypofraktionerad behPurpose: This work examined the feasibility of flattening filter free (FFF) volumetric modulated arc therapy (VMAT) for extreme hypofractionation of prostate cancer. The aim was to investigate the potential gain in treatment time per fraction for extreme hypofractionation of prostate cancer, while preserving or improving the treatment plan quality and radiation delivery quality. The impact of intr

LEGO: en mental rotation

Syftet med denna undersökning var att se om det blev en tidsskillnad när man byggde LEGO efter tvådimensionella (2D) eller tredimensionella (3D) instruktioner samt ifall 3D instruktioner kan förbättra tiden för människor med lägre spatial förmåga jämfört med 2D instruktioner. Forskningsdesignen var inomindividsdesign och urvalet bestod av 33 deltagare i åldrarna 20-33 år, 11 var kvinnor och 22 var

Brazil Bolsa Familia Program: Analysing The Impact of The Conditionalities on School Enrolment, Health and Child Labor

Abstract With high poverty and inequality rate, the Government in Brazil have adopted several social assistance programs and strategies in the fight against the ever growing rate of poverty and inequality within it’s population since the 1990s. In recent years, the Bolsa Familia Program have been a major social assistance program in Brazil, and the program have affected more than 13 million poor h

Revisionsbranschens Prispress - En empirisk studie om hur revisorer upplever prispressen och dess inverkan på deras yrkesverksamhet

Syfte: Studiens syfte är att bidra med ökad förståelse för i vilken utsträckning svenska revisorer upplever en prispress och hur deras yrkesverksamhet påverkas av en eventuell prispress. Metod: Studien har genomförts med en kombination av kvalitativ och kvantitativ metod med en abduktiv ansats. Teoretiskt perspektiv: Den teoretiska referensramen har skapats med utgångspunkt i agentteorin. VidarePurpose: The study's purpose is to bring a greater understanding of the extent to which Swedish auditörs experience fee pressure and how their work is affected by it. Methodology: The study was conducted using a combination of qualitative and quantitative methods with an abductive approach. Theoretical perspective: The theoretical framework has been created on the basis of the Agency theory.

Klämskydd för slagdörrar med dörrautomatik

Nya standarder kräver att ett klämskydd ska installeras på alla dörrar där det förekommer en automatisk dörröppnare. Detta säkerställer att ett finger inte oavsiktligt placeras i dörrens bakkant och därmed riskeras att skadas allvarligt. Försäljningen av denna typ av produkt har varit trög, men en ny produkt med ett kraftigt reducerat pris kommer förhoppningsvis bidra till ett lyft i försäljningen

Energilager och nätförluster - Fallstudie Öland

Expansion och integration av vindkraft i distributionsnäten medför ökad risk för överbelastning av ledningar och nätförluster. För att möjliggöra hög andel vindkraft installerat i distributionsnätet så har E.ON installerat ett Dynamic Line Rating- system på Öland för att övervaka ledningarna och ett styrsystem som kan styra ner elproduktionen från vindkraft då risk för överbelastning förekommer. AThe development of the renewable energy sources and the amount installations in Sweden and also in other countries have increased a lot the last years, this is especially true for solar- and wind power. Main reason for the increase of the renewable energy sources is to decrease the usage of fossil fuels and thus to decrease the impact on the climate. The integration of the renewable energy sources

ARBETSLEDARENS SYN PÅ LEDARSKAP - inom byggproduktion

Sammanfattning Uppsatsens titel: Arbetsledarens syn på ledarskap – inom byggproduktion Seminariedatum: 26.05.2015 Ämne/kurs: Magisteruppsats inom Företagsekonomi, inriktning organisation och ledarskap, 30 Högskolepoäng Författare: Erika Wagland, Malena Willoughby Handledare: Christine Blomquist Fem nyckelord: ledarskap, arbetsledare, ackord, byggproduktion, identitet Syfte: Syftet med dennAbstract Title: The supervisor’s view of leadership – in construction Seminar date: 26.05.2015 Course: Master thesis in business administration, 30 University Credit Points (30 ECTS) Authors: Erika Wagland, Malena Willoughby Advisor: Christine Blomquist Five key words: leadership, supervisor, piece work, prodution in construction, social identity Purpose: The purpose of this paper is to ga

Do-It-Yourself Helium Balloon Aerial Photography : developing a method in an agroforestry plantation, Lao PDR

Syftet med studien har varit att utveckla en metod för flygfotografering som är lätt att använda, relativt billig och ger tillräckligt högupplösta bilder för att urskilja individuella trädkronor. Flygbilder har blivit ett värdefullt verktyg för skogsförvaltning genom tiderna på grund av den fördelaktiga vyn och möjligheterna att erhålla uppdaterad information. I studien flygs en heliumballong överThe aim of this study has been to develop a small format aerial photography, SFAP, acquisition method that is easy to use, inexpensive, and delivers high enough resolution to detect individual trees. Aerial photography has become a valued tool for forest management through time, because of the vantage point and up-to-date information it can provide. In this study, a helium balloon is flown over an

Urban Flood Resilience - A case study on how to integrate flood resilience in urban planning.

Climate change and increasing urbanization gives societies great challenges in managing urban planning for a sustainable future. Urbanization aggravates floods by increasing the amount of impermeable surfaces and by modifying flow routes. Resilience is the capability to recover from a stress and high resilience is seen as the goal of a healthy development. By including the concept of resilience inEvery year billions of people get affected by floods and the economic losses are among the highest when it comes to natural disasters. Depending on your social class the consequences of a flood can vary greatly. An urban flood resilience index, S-FRESI, can be used to identify extra sensitive areas and strengthen these neighborhoods to create a more resilient society.

Några perspektiv på relationen mellan brott och straffskala

Problem/ Bakgrund: Genom historien har synen på brott och straff förändrats. Hur ser relationen mellan brott och straff ut?, hur påverkar dem varandra och hur ser före detta kriminella på relationen mellan brott och straff i jämförelse med teorier om den relationen? Syfte: Syftet med uppsatsen är att undersöka kriminella personers uppfattningar om hur straffskalan påverkar brottsfrekvensen, samt

The Effect of Matric Suction on Total Stability Evaluations in Clay

Populärvetenskaplig sammanfattning av examensarbete utfört vid institutionen för byggvetenskaper vid LTH i samarbete med Sweco Civil AB. Under vissa förhållanden kan sugkrafter uppstå i jord. Fenomenet är sammankopplat med hur mycket vatten det finns i marken, desto mindre vatten desto högre sugkraft och därmed mindre risk för att t.ex. jordslänter rasar. För att undersöka detta fenomen har finiIn this master´s dissertation I investigated if it is possible to increase the total stability for excavations in clay, if suction is taken into account during the calculations. The work has been performed at, and in cooperation with, Sweco Civil AB as well as the Dept. of Construction Sciences at Faculty of Engineering LTH, Lund University. The objective of this master´s dissertation is to asse

What Factors Influence the Success Rate of Crowdfunding Campaigns?

Crowdfunding is a financing method based on raising smaller funds from a large audience over the internet. The data used in this quantitative study includes all 1080 reward and equity campaigns uploaded on the Swedish crowdfunding platform FundedByMe from 2011 to 2015. I aim at providing evidence of what factors that influence the success rate of crowd- funding campaigns. To answer this, I have ru

Analyzing the Effect of Internal Devaluation Policies on European Export Demand – A Panel Analysis on Industry Level

After the outbreak of the financial crisis in Europe in 2008, the strategies to antagonize its con-sequences, involved the implementation of internal devaluation policies such as nominal wage suppressions. The effectiveness of these policies has undergone various studies with rather negative criticism and evaluation. To produce further research and perform an empirical analy-sis in this field, thi

Production and biodegradability of dissolved organic carbon from dIfferent litter sources

The movement of carbon on Earth is based on exchange between pools that represent carbon in different physical forms, differing in chemical composition, structure and function. Dissolved organic carbon plays an important role in ecosystems because of its mobility, which can be relatively high in saturated soils, and because it is the most available fraction of organic matter for microorganisms in

Current Account Imbalances in the Eurozone: Is Institutional Heterogeneity to Blame?

Can differences in institutional quality explain current account imbalances in the Euro area? This paper emphasizes a link between current accounts and institutional quality based on a country study for Greece. Subsequently it tests the relationship for a homogeneous sample of 24 European countries over the period 1990 through 2013. Regression analysis indicates that institutional quality is cruci

Food preserving based on a new vapour textile technology

This project was initiated by the food technology department of Lund University for a design study of a new developed technology to dry mashed fruits. A fabric with special parameters allows to preserve fruits, without using electricity, in a short period of time. The given task consists of designing a “bag” to dry mashed and liquid fruit purée. The bag should be easy to fill, empty, clean and re-

Embodied Carbon in Buildings - investigating drivers and barriers for the Swedish construction industry to address Embodied Carbon, and necessary policy support as deemed by the industry

Mitigation of greenhouse gas (GHG) emissions is essential for us humans to curb climate change. Around a fifth of the anthropogenic GHG emissions stem from the construction sector. Much come from energy used for space and water heating within buildings, but an increasing proportion comes from the manufacturing of the building materials and is virtually embodied within buildings. This is called Emb