Abstract CORDIC (Coordinate Rotation Digital Computer) is an iterative algorithm for the calculation of a two-dimensional vector in circular, linear or hyperbolic coordinate systems. This paper presents a survey of known CORDIC algorithms and architectures for the rotation and vectoring mode in the circular cordinate system. In addition an implementation of the differential CORDIC algorithm in VHDL has been done. The implementation is designed to keep the fast timing and throughput characteristic known for on-line redundant arithmetic..

Introduktion: Skolios som drabbar barn och ungdomar ger en krökning av ryggraden i sidled. Upprepade undersökningar med joniserad strålning av främst flickor i puberteten innebär risk för bröstcancer. Genom att på olika sätt optimera undersöknings metoderna och använda skydd till patienter kan biverkningarna minskas. Syfte: Syftet med studien var att genom en systematisk litteraturöversikt sammanställa vilka metoder och röntgenparametrar som kan användas för dosreducering i samband med radiologisk skoliosundersökning av barn och ungdomar. Metod: Studien utfördes som en allmän litteraturöversikt.

Tidigare forskning har visat att systematisk självrapportering är en fördelaktig metod för att följa enpersons psykiska mående över tid, och att en digital mätmetod i sin tur skulle innebära många praktiskafördelar jämfört med en analog. Detta är en experimentell randomiserad, kontrollerad studie som medutgångspunkt i personcentrerad vård och spelifiering undersöker 35 personers användarfrekvens ochattityder efter en tvåveckorsperiod där hälften har fått prova att självskatta sitt psykiska mående via enmobilapplikation, och hälften fått göra detsamma via ett analogt stämningsformulär. Resultatet visar enhögre användarfrekvens bland deltagarna i mobilapplikationsgruppen, samt ett uttalat intresse hosbägge grupper för digitala metoder för självskattning av psykiskt mående. Bägge metoderna ansesstärka personcentrerad omvårdnad. The aim of this study is to explore user frequency and attitudes for persons using a mobile applicationfor assessing mental health compared to persons using an analogue assessment method.

This rapport aims to examine the difficulties in presenting a complex game in a way that will invite new players by making the game more accessible. We discuss and present our process on how to create an application named ?Digi?-war that is easy and fast to, both, learn and use. Our solution to this issue includes RFID-tags and readers together with four buttons, as input devices. This simple input device, placed in a gun-type control unit, aims to provide an intuitive interaction..

The amount of various phosphorus (P) fractions in the sediment and the relationship between the amount of P and sediment particle size were investigated in a constructed wetland southwest of Linköping. Furthermore, the possible correlation between clay content in the sediment and distance from the inlet was investigated. Sediment samples were collected along three transects from the inlet to the outlet, with six samples in each transect. In order to measure the soluble P, an NH4Cl extraction was done. This was also analysed for total soluble P after oxidation with peroxodisulphate.

Arbetet handlar om sökmotoroptimering med hjälp av microdata. Hamnar webbsidor som använder sig av det högre upp i det organiska sökresultatet? Eller kan det ge mindre önskvärda konsekvenser?Från början åtogs arbetet att skapa en sökmotoroptimerad sida åt företaget Hårmakarna i Motala och som en naturlig del i arbetet dök användandet av microdataupp. Det tycks vara allmänt vedertaget att tekniker som microdata är gynnsamma vid sökmotoroptimering och frågeställningen kring huruvida ett sådant användande kunde ge en bättre placering i det organiska sökresultatet eller ej tog form. Det var särskilt intressant eftersom det inte verkade finnas några studier som bekräftade frågeställningen.

In this essay I have studied Aftonbladets portrayal of the Swedish businessman Jan Stenbeck and if the reporting changes before and after his death, and if so, in which ways. With help from a qualitative syntax analysis and a content analysis I studied my material about Stenbeck during the time period 2000-09-19 to 2004-09-19. In my quantitative analysis I studied 140 articles and in my syntax analysis I studied ten articles, five before and five after Stenbecks death. The theoretical perspectives that I applied in my study is Sigurd Allerns theory about tabloid papers novelty criteria and Adam Shehatas theory about Framing. Allerns theory describes what criteria the tabloid papers have on news and Shehatas theory about framing describes the political forces behind the news who wants to set their own agenda.

This project was aimed to study the degradation of polystyrene-butadiene-styrene block copolymer (SBS). SBS is used to modify bitumen, the binder in asphalt. From earlier studies it is known that SBS degrades in bitumen, but the degradation products have not been identified. To be able to determine the long term effects of SBS in the environment, degradation products need to be identified. Polystyrene forms rigid blocks with polybutadiene as a rubbery matrix between the ridgid blocks.

We have 3G on the doorstep but nothing seems to attract ordinary people to this technology. To attract the mass market the telecom industry must show something beyond high bit rates. They must show how ordinary people can take advantage of this new technology. This is done by showing the possibilities of the new technology and by demonstrating applications that it will handle. The telecom industry must convince the telecom operators to invest in this technology and the only thing that matters to them is how much revenue they can make by adopting the upcoming technology.

The objective for this master?s thesis was to test and evaluate two methods for determining the content of tannin in a pinebarkextract. The methods used at Södra for this previously have not been specific enough, only the amount of polyphenolics have been measured. One of these methods is a test based on the Stiasny test and it determines the extracts ability to form a gel with formaldehyde. When this test was carried out it showed that the extract did not contain much tannin.

The amount of various phosphorus (P) fractions in the sediment and the relationship between the amount of P and sediment particle size were investigated in a constructed wetland southwest of Linköping. Furthermore, the possible correlation between clay content in the sediment and distance from the inlet was investigated. Sediment samples were collected along three transects from the inlet to the outlet, with six samples in each transect. In order to measure the soluble P, an NH4Cl extraction was done. This was also analysed for total soluble P after oxidation with peroxodisulphate.

På uppdrag av Tidningsutgivarna har en studie utförts angående olika möjligheter att införa tryck av variabeldata med tryckmetoden inkjet i svensk dagspress. Målet var att undersöka tekniska möjligheter och begränsningar samt att utreda om det fanns något intresse på marknaden som skulle kunna ge någon avkastning. Studien utfördes med hjälp av noggranna källstudier och ett fortlöpande samarbete med olika företag med intresse för dagspress. Rapporten beskriver också företag som arbetar med den här typen av innovationer idag och diverse tidigare projekt med variabeltryckta tidningar. Nya teknologier som eventuellt kan vara av intresse för framtida utveckling har också beskrivits och hur tidningens framtid kommer att se ut ur ett kortare och ett längre perspektiv.Studien visar att inkjetpressar inte klarar av den hastighet som de moderna tidningspressarna håller idag.

The research of this Masters thesis examines if during a specific period of time, Environmental scanning connected to Swedish public libraries is discussed in journals that are directly connected to the field of Swedish libraries. The method employed was content analysis of articles, news items and ads with the intention of finding out the extent of Environmental scanning and who carries it out and how and what is scanned. The research covers the period from 2004-01-01 to 2004-08-31. During the research period 1387 articles, news items and ads were analyzed. The study focuses on 81 selected published units that directly include references or discussion about Environmental scanning.

This study revolves around calculating the extent of appearance of both anonymously and named men and women as well as determining whether or not Yvonne Hirdman?s gender theory is applicable on two versions of a Swedish educational history textbook called Epos: historia: för gymnasieskolans kurs A (2008) and Epos [historia] 1b (2012), published for two different curriculum. Our qualitative investigation of two parts of the book?s content proves that the two principles of gender system are present in both books, although to a lesser extent in the latter version. Calculating the material, results have shown that anonymous men and women are almost equally presented in Epos 2012, which is not the case in the 2008 version.

The purpose of this Master?s thesis studies is to examine how information seeking is taught from a pedagogical and didactic perspective. The questions at issue are:? What is the content in information seeking education?? What aims are focused in information seeking education?? What methods are used in information seeking education? The methods being used are empirical studies and studies of literature, within the subject area. The study is inspired by phenomenographical learning theories.