Denna studie är en undersökning av hur elever i år 6 uppfattade det geografiska rummet, vilka omvärldsbilder elever i skolan innehade, hur de påverkades av olika intryck från omgivningen samt om elevernas omvärldsbilder förändrades under en termin. Att inneha en omvärldsbild innebär att ha en föreställning om hur den rumsliga världen ser ut och förhåller sig. Undersökningen var av empirisk art och bestod av en namngeografisk undersökning av geografiska objket i Sverige, elevernas ritade bilder av världen, intervjufrågor samt en kartförståelseuppgift. Studien genomfördes vid två olika tillfällen för att se på eventuella förändringar i elevernas omvärldsbilder. Studien visade på att elevernas omvärldsbilder påverkades, utvecklades och innehöll all den information individen mötte och hade med sig sedan tidigare om den rumsliga världen.

Denna forskningsöversikt handlar om effektiviteten av platsbaserat polisiärt arbete, som fokuserar på små geografiska områden med hög kriminalitet. Har platsbaserat polisiärt arbete en brottsminskande effekt? Minskar bara en viss typ av kriminalitet? Flyttar brottsligheten bara på sig? - Genom lämpliga sökord och välkända databaser valdes de studier ut som hade bra utvärderingsdesigner. Resultatet blev 14 studier varav 9 randomiserade experiment, 4 kvasiexperimentella studier och 1 metaanalys. Översikten visar på en delad bild när det kommer till signifikant effekt vid brottsminskning.

The first part of the thesis consists of a brief introduction to the general principles of target detection and the sensor-systems used. In the following part there is a theoretical description of the algorithms this thesis focuses on. The detection algorithms described in this paper are called Cell Average, Ordered Statistics, 2parameter and Gammadetector. Two different discriminators called Extended Fractal Features and Quadratic Gamma Discriminator are also described. The algorithms are tested on three different types of data, simulated SAR-pictures, authentic SAR-targets and IR-pictures.

Using the Introductory Carbon Balance Model, ICBM, five different crop rotations with rye 1. Rye-Ley-Ley-Rye-Beans-Rye 2. Rye-Rye-Rapeseed-Rapeseed 3. Rye-Ley-Ley-Rye-Potatoes-Rye 4. Rye-Rye-Potatoes-Wheat 5. Rye-Rye-Potatoes-Beans-Wheat-Rye-Potatoes-Rapeseed were tested theoretically in four different cultivation scenarios ? Straw left on the field, biogas digestate added as fertilizer. Labelled ?+straw+BD?. ? Straw left on the field, only synthetic fertilizer. Labelled ?+straw-BD?. ? Straw harvested, biogas digestate added as fertilizer.

Optimizing energy systems is, in Sweden, as in many other countries, of growing interest. District heating systems are no exception. In 2012, 285 out of 290 municipals in Sweden had district heating in use and the majority of these systems have a higher return temperature than that which is possible with an error-free substation of day current technology. To, when possible, lower the return temperature is a way of increasing the effectiveness of the district heating system.This study means to investigate, through simulations and calculations, how big of a reduction in production cost a lower temperature in the city of Ystad?s district heating system would correspond to.

The aim and purpose with this essay is to identify the natural conditions of the New Orleans City region, and to establish an understanding of the disastrous event of Hurricane Katrina in August 2005. Who lived in this area and how did this event affect the outcome of the disaster?The theory is based on two Swedish human geographers Torsten Hägerstrand and Thomas Lundén, and their theories on regional geography and political geography, also regarded as ?geopolitics?. Regional and Political Geography are explained as the relation between state and territory, power over the territory and the variables that affect the relations on different levels such as; economy, culture, technology, demography and communication.The author decided to use the quantitative method in the process of research, the essay underwent an overall analyzes of the media settings, articles, written literature and documentaries. The author has been very critical to the material and data that was presented by the American authorities, media and non governmental organisations.New Orleans City?s topography is unique in the matter that the city is constructed on a delta area, the Mississippi River, Missouri and Ohio River systems are all connected in New Orleans.

Den övergripande målsättningen med denna uppsats är att visa hur GIS kan fungera som stöd i en MKB. För att exemplifiera detta genomförs i denna uppsats en specificerad studie kring flygbullerpåverkade områden vid Malmö-Sturup flygplats. Flyg-bullerkartor erhölls från Luftfartsverket (LFV). Analyser gjordes för olika startriktningar om flygbullrets interferens med bland annat människor, naturvård, kulturmiljö, friluftsliv, fastigheter (egendomar) samt med några tätorters expansionspotential. Jämförelser genomfördes mellan flygplanstyperna McDonell Douglas MD80 och McDonell Douglas DC9.

The Swedish geographer Gerd Enequist (1903-1989) left behind great amounts of private and work material when she passed away. This was donated to the University Library of Uppsala, Carolina Rediviva, in three different accessions. This resulted in three different record. The subject of this report is the progress of assembling these record into one complete record.The registering led to many important decisions such as the role of provenance and the relation of private and public documents. Above all the special nature of personal archives have been a topic of discussion.

This thesis aims to present the essential background on how to perform climate changeimpact assessments, and to present the results from a climate impact assessment on waterbalance and nitrate leaching for an arable Swedish soil. The soil is a sandy soil in southwesternSweden, grown with spring cereals. This study is meant to be a benchmark example,and cannot be seen as a regional or national assessment for Sweden, rather as an approachto present and analyze the most important parts of these kinds of assessments.A dynamical simulation model (COUP, Jansson and Karlberg, 2004) was used for thisstudy. The model was parameterized and calibrated against data from an experimental site,located in Mellby in Hallands county, south western Sweden. Measurements were carriedout between 1st of April 1988 and 1st of April 1991.

At the department of Electronic Warfare Assessments at the Swedish Defence Research Agency in Linköping one of the activities is modelling and simulation of the duel between a robot and a target. The aim with this Master's thesis is to develop a simulation model of an hovering helicopter. First a theoretical description of the forces and moments acting on an helicopter is given. Then the equations of motion are derived. These equations are simplified to be valid only for a hovering helicopter and the result is a mathematical model.

The aim of this study was to examine how some Swedish school counsellor?s describe their school social work and how they look at its content. Further more the aim is to look at what restraining and promoting factors the school counsellor?s experience in their working situation. The approach of the study is qualitative and interviews have been made with five school counsellors.

This thesis aims to present the essential background on how to perform climate changeimpact assessments, and to present the results from a climate impact assessment on waterbalance and nitrate leaching for an arable Swedish soil. The soil is a sandy soil in southwesternSweden, grown with spring cereals. This study is meant to be a benchmark example,and cannot be seen as a regional or national assessment for Sweden, rather as an approachto present and analyze the most important parts of these kinds of assessments.A dynamical simulation model (COUP, Jansson and Karlberg, 2004) was used for thisstudy. The model was parameterized and calibrated against data from an experimental site,located in Mellby in Hallands county, south western Sweden. Measurements were carriedout between 1st of April 1988 and 1st of April 1991.

When a helicopter is flying, the dynamics vary depending on, for example, speed and position. Hence, a time-invariant linear model cannot describe its properties under all flight conditions. It is therefore desirable to update the linear helicopter model continuously during the flight. In this thesis, two different recursive estimation methods are presented, LMS (Least Mean Square) and adaptation with a Kalman filter. The main purpose of the system estimation is to get a model which can be used for feedback control.

Because of increasing demand of power on Malmbanan the capacity of the existing wires which supply the trains must be increased. This increases the stress on the existing poles and for this reason the system for supplying the loads along the railway is to be removed from the poles and be replaced by some other system. This thesis is a study on a two-level low voltage (1 kV and 0.4 kV) electrical system with the aim to investigate if it can be an alternative to the system used today taking into account the voltages, fault currents and costs.In this thesis the following tasks have been performed:? Gathering of data? Description of basic theory? Loadow and fault current calculations of the system with MATLAB? Life Cycle Cost estimate of the system? Analysis and conclusions from the resultsThe results show that the new system can be an alternative to replace today's system. The simulations and calculations show that the voltage drop is at an acceptable level and that the fault currents are large enough to supply a safe disconnection if a fault occurs at the far end of the system..

Denna uppsats redovisar en beskrivande fallstudie som gjordes pa? en svensk ho?gstadieskola och som gick ut pa? att underso?ka vilken plats Wikipedia har pa? ho?gstadiet idag. Fo?r att ta reda pa? det gjordes enka?tunderso?kningar bland elever och la?rare och textanalyser av elevuppsatser. Geografia?mnet anva?ndes som exempel pa? skolans undervisning.