<p>Målsättningen med färgåtergivning i katalogproduktion är att färgen på produkten i katalogen ska upplevas samma som färgen på själva produkten. ICSAB (IKEA Catalogue Services) producerar varje år IKEA-katalogen som innehåller ca 15000 olika produktbilder. Att reproducera dessa bilder är ett komplext problem som ställer höga krav på färghanteringssystemet, färgspecificering av produktfärger, färgverifieringsmetoder samt den visuella bedömningen av produktbilderna. </p><p>Rapporten beskriver produktionsflödet på ICSAB från fotografering av produkterna i fotostudion till utmatning av förprovtryck. Utifrån detta arbetsflöde analyseras de faktorer som påverkar färgreproduktionen. </p><p>Rapporten ger förslag på hur färghanteringen kan optimeras genom ICC-baserat färghanteringssystem med anpassade profiler för alla olika enheter i produktionen, vilka konverteringsmetoder som bör användas mellan de aktuella färgrymderna samt färghanteringsmodulens inverkan på färgreproduktionen. </p><p>Rapporten ger även förslag på hur färgerna skall specificeras med uppmätta spektralfördelningar och LAB-värden för respektive produktfärg. Samt verifieras med hjälp av kvantitativa toleransmetoder så som CIELAB och eventuellt även elliptiska toleransmetoden CIE94 eller CIEDE2000. </p><p>För att förbättra den visuella bedömningen av färgåtergivningen rekommenderas standardiserade betraktningsvillkor. Dessa bör omfatta belysningsvillkor med olika intensitetsnivåer, omgivningsförhållanden, betraktningsgeometri samt hur själva bedömningen bör utföras. </p><p>De tester som utförts på ICSAB, för att se hur det nuvarande systemet reproducerar ett antal produktfärger, visar att gråtonerna reproduceras med mindre färgdifferens än färgtonerna. </p><p>För att förbättra färgstyrningen och minska skillnaderna mellan original och reproduktion rekommenderas följande: </p><p>- Att anpassade profiler för samtliga enheter i produktionen </p><p>- Ett ICC-baserat färghanteringssystem för ökad kontroll över systemet Standardiserade betraktningsvillkor för den visuella färgbedömningen</p><p>- Verifieringsmetoder för att kvantitativt kontrollera de reproducerade produktfärgerna</p>

<p>During a make ready in a web offset press it is important to produce as little waste as possible. Reducing the amount of waste yields savings of both time and money. One way to do faster make ready is to preset the ink keys of the press before it is started. </p><p>This diploma work, carried out at Sörmlands Grafiska Quebecor AB in the city of Katrineholm, Sweden, examines how the ink key preset may be done using low- resolution digital images stored in the vendor independent data format CIP3 PPF. The press that has been used has a control interface that is not accessible from the outside. This feature is shared with a lot of older presses. Therefore several methods of how to present and collect ink key settings using offline methods have been tested. </p><p>To investigate the relationship between mean coverage over one ink zone and its corresponding ink key opening data from a 32-page web offset press has been collected. The mean coverage was taken from the CIP3 PPF files that were related to the collected print jobs. </p><p>The relationship that was found between the coverage and the opening can be described with a transfer curve (one curve per printing unit and side). Using as few as three print jobs of high quality (density and dot gain within given tolerances) a first set of transfer curves may be created. These are close to the real ones and using print jobs where the ink key presettings have been calculated the transfer curves may be calibrated to perform better and better presetting calculations. To generate and calibrate the transfer curves and to extract the mean coverage values from the CIP3 PPF files and recalculate these to presetting values a computer program called IKPS (Ink Key Presetting System) was made. IKPS was made using MATLAB from MathWorks INC. </p><p>IKPS have been tested for ink key presetting during a number of print jobs. Even though the transfer curves were uncalibrated the system performed well. As comparison the results from a plate scanner was used. Even if online transfer of the presetting values is preferable the big advantage with the IKPS is that it is an offline system and therefore it is possible to implement it on any kind of offset press, old as well as new. In order to generate reliable transfer curves the print jobs used for calibration must be of high printing quality and representative for that particular press. How the ink key presettings are presented in the press control room depends on what kind of press it is. IKPS works with CIP3 PPF files as well as low-resolution cmyk tiff files.</p>

<p>Den här rapporten beskriver arbetet med att skapa en dynamisk designdriven webbsida åt Landegrens Legomek AB, ett mindre företag inom tillverkningsindustrin. Företaget hade sedan tidigare en statisk webbsida och ville förnya denna i takt med den ökade vikten av att synas på Internet. Design och layout är anpassad till företages profil och kunder för att ge ett seriös och formellt intryck. Vi har valt att skapa den nya webbsidan med databasservern MySQL och skriptspråket PHP. Även JavaScript är en del i implementeringen. Till den nya webbsidan har vi också skapat en administrativ tjänst som är webb-baserad, denna ger möjlighet att enkelt uppdatera innehållet på webbplatsen. Arbetet har inte endast omfattat den tekniska delen utan även berört andra delar som foto och copywriting. </p><p>Företaget har valt att ha sin hemsida hos ett webbhotell, i det här fallet Telia. Fördelen är främst säkerhet och underhåll av systemet. Nackdelen är de begränsningar som webbhotellet har, bland annat ftp-stödet i PHP som fullständigt saknas vilket har lett till att vi fick implementera andra lösningar. </p> / <p>This report describes how to create a dynamic and design driven web page for Landegrens Legomek AB, a minor company in the manufacturing business. The company had already recognized the need to update its former web page to a more modern design to keep up with the current trends on the Internet. Design and layout were adapted to the company’s profile and its customers, this to give the right impression of the company. The page was created with the database server MySQL together with the script language PHP. JavaScript is also a part of the implementation. We have also created an web interface for updating and managing the web page in an easy way. The work also included other parts beside the technical implementation, such as photography and copywriting. </p><p>The company has chosen to place its website in a web hotel, for this case Telia. The advantage with this solution is the security as well as the managing of the system. The disadvantage is the limits of the web hotel, e.g. the missing ftp support in PHP, which has forced us to choose other solutions.</p>

<p>A common way to measure height in aerial vehicles is to use a radar height altimeter (RHM). Since the RHM transmits radar pulses that can be detected, a passive alternative would be desirable in military applications. The idea to use reflected signals from the Global Positioning System (GPS) as a bistatic radar, has been established over the last years. The GPS signals are already present and would not reveal aeroplanes in covert operations. </p><p>In this thesis, the use of reflected GPS signals as a bistatic, passive altimeter is examined. A simulation model has been developed and implemented, and simulations using the model have been done. Different types of ground cover have been investigated, both water and land types, with varying reflectivity and scattering behaviour. For larger terrain variations, e.g. mountains and valleys, a ground elevation database has been used. Furthermore, several parameters, like the antenna coverage and the satellite elevation angle, have been varied and the result of this examined. </p><p>The results of these simulations show that measuring height is possible for bothsea and land surfaces. The accuracy depends on several error factors, like a bias originating from surface roughness and measurement errors due to noise in the receiver. The simulations also show that the most important design parameter is the antenna, which must be designed to give a sufficiently large SNR, capture the specular reflection and avoid unwanted reflections.</p>

<p>The subject for this thesis is to find a basis which minimizes the number of bit operations involved in a finite field multiplication. The number of bases of a finite field increases quickly with the extension degree, and it is therefore important to find efficient search algorithms. Only fields of characteristic two are considered. </p><p>A complexity measure is introduced, in order to compare bases. Different methods and algorithms are tried out, limiting the search in order to explore larger fields. The concept of equivalent bases is introduced. </p><p>A comparison is also made between the Polynomial, Normal and Triangular Bases, referred to as known bases, as they are commonly used in implementations. Tables of the best found known bases for all fields up to GF(2^24) is presented. </p><p>A list of the best found bases for all fields up to GF(2^25) is also given.</p>

<p>Matlab Simulink is a commonly used tool in the design process of control systems. To further take advantage of the Matlab Simulink models it is desirable to translate them for realtime use together with the possibility to read/write physical signals. </p><p>Real-Time Workshop is an extension to Simulink that automatically generates code from a model to a variety of target platforms. RTAI and RTLinux are hard realtime operating systems, making use of Linux. </p><p>To make automatically generated code run on RTAI and RTLinux an adaptation of the generation of code is necessary. </p><p>To control, for example, an automotive engine a data acquisition card with an appropriate device driver is required. Comedi, an open source project, provides a number of device drivers for data acquisition cards. </p><p>The developed system makes use of Simulink, Real-Time Workshop, RTAI or RTLinux, and the standard data acquisition card NI 6035E using a Comedi device driver. The Simulink models may be executed at frequencies up to 50 kHz on ordinary PC hardware. </p><p>The evaluation of the system consisted of measuring the interrupt latency of the used motherboard's bus, measuring computation times running Simulink models with known complexity, running models developed at Vehicular Systems and a comparison of interfacing Simulink/Real-Time Workshop between RTAI and RTLinux. </p><p>The recommended realtime operating system is RTAI due to the open source community support of it as a target platform for Real-Time Workshop.</p>

<p>This thesis deals with output power calibration of a mobile platform that supports EGPRS.Two different topics are examined. First some different measurement methods are compared concerning cost efficiency, accuracy, and speed and later measurements are carried out on a mobile platform. </p><p>The output power from the mobile platform is controlled by three parameters and the influence on the output power when varying those parameters is investigated and presented. Furthermore, two methods of improving the speed of the calibration are presented. </p><p>The first one aims to decrease the number of bursts to average over as much as possible. The conclusion is that 10-20 bursts are enough for GMSK modulation and about five bursts for 8PSK modulation. The purpose of the second investigation is to examine the possibility to measure the output power in one modulation and frequency band, and then calculate the output power in the other bands. The conclusion in this case is that, based on the units investigated, it is possible for some values of the parameters and in some frequency bands. However, more units need to be included in the basic data for decision-making and it is possible that the hardware variation is too large.</p>

<p>On radar level gauges currently shipped by Saab Rosemount, some adjustments of the unit's parameters has to be performed in the field. Presently, this is a cumbersome procedure; the operator has to be very close to the gauge and he either has to carry with him a bulky configuration unit or use a basic control unit on the gauge. A wireless solution, where a portable device and a receiver replace the control unit, would both allow the operator to work from a distance and eliminate the need for the bulky device. </p><p>The most conspicuous restraint for such a solution is a very low allowed power dissipation. The reason for this is that some gauges do not have a separate power supply, but are fed directly off the communication bus. A viable solution should also be commercially available and robust enough to operate in an industrial environment. </p><p>To meet these requirements both a theoretical and a practical assessment was conducted, where the two techniques for wireless communication, IrDA, and Bluetooth, was given special consideration. As for the portable device, the market for hand-held computers was investigated and ultimately a PDA from Palm was selected for this project. Together with this PDA, a prototype for each of the two wireless techniques was tested to ascertain their performance with respect to power dissipation, communication range, and communication robustness. </p><p>This investigation revealed that Bluetooth could be used over a much greater distance than IrDA and it did also provide a more robust solution overall. IrDA is nonetheless also a competent technique, and has its primary advantage in terms of much lower power dissipation compared to Bluetooth.</p>

<p>This thesis explores the problems and possibilities concerning the interaction between players physically located in different cars during temporary meetings in a gaming situation. The thesis is part of a study set out to investigate how traffic encounters can be used as a resource in a mobile, multiplayer game intended as entertainment for children travelling in the backseat of cars. The multiplayer capabilities are realised by using wireless networks in ad hoc peer- to-peer mode, GPS positioning and a digital compass. </p><p>Designing the interaction for an ad hoc, mobile multiplayer experience introduces several design challenges, such as how to adapt to the temporality of traffic encounters and how to establish a connection between the digital game and the physical context. The nature of traffic encounters inspired us to take a newapproach to the interaction. The interaction is accomplished using a device, which enables direct interaction between players physically located in different cars. A prototype game was constructed within the frames of the project, which this thesis was part of, to test the functionality of the game concept. The prototype has been tested in its real setting, i.e. inside a car. The study and the work on this thesis was initialised and supervised by Liselott Brunnberg and the work was carried out at the Mobility Studio at the Interactive Institute in Stockholm during late spring and summer 2003.</p>

<p>This thesis will show you how to build and construct a interactive website with a web shop and a web based administration system. The website is developed for a company called Varett. Varett will use the website to reach out for a larger group of customers and also for promoting new products. I have develop this site mainly using ASP, MS Access and HTML. </p><p>I have also developed a graphic profile for the company to use at the homepage and at other commercial products. You can find the current version of the website at http://www.varett.se.</p> / <p>Detta examensarbete visar hur man bygger upp och konstruerar en interaktiv hemsida med en webbshop och ett webbaserat administrationssystem. Hemsidan är utvecklad åt ett företag som heter Varett. Varett var i behov av en hemsida för att kunna nå ut till en större kundgrupp och för att kunna göra reklam för nya produkter de själva utvecklat. </p><p>Jag har utvecklat hemsidan mestadels med hjälp av ASP, MS Access och HTML. Jaghar också tagit fram en grafisk profil åt företaget. Den grafiska profilen används inte bara på hemsidan utan också för reklamblad produktbroschyrer mm. Hemsidan finns just nu tillgänglig på http://www.varett.se.</p>