Due to the climate change natural disasters expects to increase and in some areas the conditions for dissemination of hazardous pollutants from contaminated areas could be affected. Different inventories and mapping has been made to identify areas of risk for flood or avalanche around the country. At the same time inventory and treatment of potential polluted areas (MIFO objects) is progressing. In Ljungans run of area in Västernorrlands county is a exposed area due to the amount of clay and silt in the ground that are sensitive in the context avalanche. The area has also a lot of MIFO objects and risks of flood.This essay aims to investigate what data material that is available regarding MIFO objects, flood- and avalanche risks in Ljungans run of area in Västernorrlands county.

Arbetet har gått ut på att utveckla en lavintransceiver.En transceiver är en sändare samt mottagare i sammaenhet och är ungefär lika stor som två medelstora mobiltelefoner.Gemensamt för alla lavintransceivers är att desänder ut och kan ta emot en signal på 457 kHz som ärlagstadgad internationell standardfrekvens. Transceiversanvänds vid skidåkning utanför preparerade backar föratt kunna söka efter lavinoffer och bör bäras av var ochen i en grupp. Hamnar en eller ett par personer i gruppeni en lavin kan de resterande som klarat sig ställa om sinasändare på sökning och spåra offret i tid.Mitt skidintresse och allvaret kring laviner lockademig till att undersöka och utveckla denna utrustning.Efter flera samtal med både vana användare och personersom inte sett en transceiver ifrågasattes hela konceptetoch ny teknik som kan ersätta den gamla söktes.Många intressanta tekniker granskades och förkastadespå grund av att de inte skulle kunna ersätta den befintliga,teknikerna var för outvecklade eller passade inte i sammanhanget.När ingen teknik var överlägsen den befintliga sågranskades dagens transceivers. Ett antal punkter visadesig vara värda att se över. Ergonomi, gränssnitt och formblev huvudfokus, det vill säga hela konceptet.

English title: Julia and the elite. A study of how the Internet hatred developed into a media avalanche.Introduction: During February 2013 Swedish media flooded with news of online hate directed towards women after an episode of Uppdrag Granskning on SVT (2013). Female media profiles were given the opportunity to tell the entire Swedish population about the hate and threats they had been exposed to online. In this thesis we want to investigate what topics end up on the media´s agenda, how a piece of news is developed and framed.Questions: How does a piece of news considered highly newsworthy develop from when it first appears in the media until it gradually disappears? How and why did Internet hatred end up on the media´s agenda? How does the media framed the Internet hatred?Theory: To be able to answer the questions formulated in this thesis, the following theories have been used: Agenda-Setting theory, framing theory, news valuation and media logic. Method: Quantitative content analysis of news broadcasts and debate shows from TV, radio and newspapers.

This report examines some common or otherwise interestingnon-cryptographic hash functions with respect to the number of collisions when used in hash tables for different types of hashkeys. The report answers which of the examined hash functions can be seen as the best performing for the chosen hashkeys. To compare the different hash functions, an experiment which studies avalanche effect behaviour is carried out. The experiments also calculate the fraction of colliding hashkeys, and the distribution of hashkeys in hash tables is studied using Karl Pearson?schi-squared test.

The idea for the thesis ?Construction and implementation of a mobile prototype; The Lovebomb? originates from doctoral candidates Rebecca Hansson and Tobias Skog from PLAY Research Group at the Interactive Institute in Gothenburg. The object of the master thesis is to construct two working LoveBomb prototypes, one mother console belonging to the LoveBomb and blueprints for both. The LoveBomb (the picture to the right shows a possible design) is intended to encourage people to express themselves emotionally when situated amongst strangers in public spaces. Two buttons control the device, which contains a radio transceiver.

I och med utvecklingen av de breda skidorna har antalet offpiståkare ökat.För många är pudersnö den största frihetskänslan.Men de lätta flingorna bildar en enorm naturkraft som i värsta fall kan innebära döden.Och 17 år gammal snö styr fortfarande livet för en 56-årig kvinna i Varberg.Konsten att bedöma laviner är svår.Och eftersom fjällräddningen tar lång tid är det kamraträddning som gäller när olyckan är framme. Sverige har i år fått sina första träningsanläggningar för sökning med lavinsändare,transceivers.För träning är enda sättet att vara förberedd när naturen sagt sitt..

The demand of nature tourism is increasing and new ways to satisfy tourists are necessary.The goal with this report was to answer that demand by exploring the possibilities for backcountry skiing north of Torneträsk. This area was chosen because it is unexplored. This hasbeen succeeded by an extensive fieldwork. Aspects like topography, routes, slope angles andgeological places of interests where recorded. The results has shown that back country skiingis well suited for this area and poses no negative impact on the natural habitat.

Wireless sensor networks have the potential for becoming a huge market. Ericsson predicts 50 billion devices interconnected to the Internet by the year 2020. Before that, the devices must be made to be able to withstand years of usage without having to change power source as that would be too costly. These devices are typically small, inexpensive and severally resource constrained. Communication is mainly wireless, and the wireless transceiver on the node is typically the most power hungry component.

Master thesis work at ITN (Department of Science and Technology) in the areas of A/D-construction and RF-circuit design. Major goal of project were to research suitable possibilities for implementations of direct conversion in transceivers operating in the 160MHz band, theoretic study followed by development of components in the construction environment Cadence. Suitable A/D- converter and other important parts were selected at the end of the theoretic study. Subsampling technique was applied to make A/D sample requirements more realistic to achieve. Besides lowering requirements on A/D-converter it allows a more simple construction, which saves more components than subsampling adds.

Maxicap AB är ett företag som utvecklar och tillverkar elektronisk utrustning för bland annat olika mätuppgifter. Målet med detta examensjobb var att undersöka och implementera en stabil trådlös dataöverföringsmetod med den utrustning som Maxicap ville använda. Detta skulle åstadkommas/testas genom att sända temperatursensorvärden trådlöst med Nordic Semiconductor?ssändtagare (eng. transceiver) styrda av Atmel?s mikrokontrollers.

Denna rapport behandlar utvecklingen av en prototyp för en absolutläges-sensor, benämnd AOS. Arbetet är utfört på uppdrag av Electrum Automation AB som med hjälp av prototypen vill utvärdera om en skarp produkt kan tas fram genom att använda billiga sensorer främst avsedda för konsumentbruk. AOS ska kunna användas för att mäta absolut orientering, dvs. lutning och riktning i förhållande till jordens gravitation och magnetfält. Den ska kunna appliceras i tuffa och säkerhetskritiska miljöer, t.ex.

This study investigated the possibility of implementing three standards, Transistion Minimized Differential Signaling (TMDS) and two versions of Stub Series Terminated Logic (SSTL), for inter-chip communication in a specific manufacturing process. The two SSTL standards were implemented in one transceiver system while TMDS was implemented in a separate system. The evaluation was done with Spice simulations on schematic level with some parasitic capacitance and resistance. The idea was to investigate the possibility of implementing these standards and get an idea of eventual shortcomings. In order to create models as a basis for evaluation, simulation environments with models for circuit board and packages were created and transmitters and receivers were designed.

The business potential of software defined radio (SDR) technology is studied by evaluating whether or not its characteristics correspond to those particular to a disruptive technology. The maturity of the SDR technology concept is illuminated by analyzing the opinions and perspectives of a selection of representatives for different stakeholders in the wireless communications market. Characteristics as, for example, the degree of consensus about the utility of SDR technology and the awareness of features and limitations are studied by application of the theory of technological frames. This theory helps us understand how and when technology evolution takes place. Finally we describe the value network structures of some potentially viable application areas for SDR and suggest some possible business opportunities based on SDR technology.This thesis is carried out as a case study and the research data is obtained from secondary sources, such as literature and Internet publications as well as interviews with people well experienced in the field of wireless communications.