IDCT (Inverse Discrete Cosine Transform) is a common algorithm being used with image and sound decompression. The algorithm is a Fourier related transform which can occur in many different types like, one-dimensional, two-dimensional, three-dimensional and many more.The goal with this thesis is to create a fast and low effect version of two-dimensional IDCT algorithm, where techniques as multiple-constant multiplication and subexpression sharing plus bit-serial and bit-parallel arithmetic are used.The result is a hardware implementation with power consumption at 19,56 mW..

The purpose of this essay is to explain which factors influence the disciplinary effect of visible constant surveillance on the people under surveillance. In order to do this we have used recorded video from a tv-show called Big Brother, which is characterized by this kind of surveillance. In addition, an open-ended interview was performed with one of the participants from the show. We have, based on a number of theoretical assumptions, as well as reflections from the interview, precisely defined expected symptoms of the participants, that would indicate when the disciplinary effect was low respectively high. Our observations and analysis allows us to conclude that the disciplinary effect of surveillance in many situations is counteracted when surveillance is constant, leading to relatively low levels of disciplinary effect in Big Brother..

Due to the globalization and constant changes in society, competition has become a big factor in profit-driven companies and organizations. Innovation has become an effective way for the companies to increase their competitiveness. By adapting to the constant changes in society e.g. the technological advances, companies can retain their competitiveness on the market.The purposeof this study is to exemplify and describe how a profit-driven company managesinnovationbyinterviewing four office managers in different work units in the same company.The resultsshows, among other things,that interactive learning can bean initiation to innovation processes and that the participating company in this study workshard to promote innovation in work units..

There are those who currently use social networks as a marketing tool that creates the standards that exist. There is no given standard, there are no absolute facts that exist through all time. A constant change is happening and therefore forcing everyone involved to adapt and make the changes needed to be current. What is relevant to consider in this study are the different roles a freelancer creates on the various channels of social media. Based on the results of the interviews that have been conducted the informants create different identities at different forums they reside on.

I denna rapport utreds olika metoder för att kunna reglera vattennivån i vattenkraftverket Avesta Lillfors i Dalarna. Två kraftverk ligger endast 900 m uppströms och detta gör att svarstiderna blir korta och regleringen blir lätt nervös. Att använda sig av vattennivåreglering i ett kraftverk för-enklar dess styrning då anpassning till inflödet sker automatiskt.En flödestabell har tagits fram genom mätningar i turbinen, med hjälp av Winter-Kennedy-metoden. Denna tabell används för att kunna fram-koppla regulatorn och därmed dämpa stora variationer i inflödet. Dessu-tom har en modell av älven skapats och testats med en återkopplad PID-regulator.

The aim of this study is to establish whether there are any specific trends in master theses concerning knowledge organization. To identify the past and current trends a method of content analysis has been applied to 110 theses over a time period of ten years. The results of this study show that there is an increasing interest in subjects concerning for example the evaluation of retrieval effectiveness in search engines on the Internet. A subject which was popular in the late 1990:s was information technology and its different applications. This subject has since that time decreased in popularity.

Dynamiken för en starkt accelerande robot har modellerats. Modellen linjäriseras så att roboten beskrivs som ett linjärt tidsvariabelt system. Denna representation beskriver roboten väl då robotens anblåsningsvinkel, vilket är vinkeln mellan robotkroppen och robotens hastighet, är liten. Eftersom det ej är möjligt att mäta alla robotens tillstånd har en observatör tagits fram i form av ett Kalmanfilter. Problematik vid framtagandet av observatören diskuteras i rapporten.

Husums plant has a selection of different pulp pumps at bleaching plant 4 and 5. The displacement- (HC-pump, Sund Defibrator PTD-60) and centrifugalpumps (MC-pump, MCA 42-200, MCP 30/20) are of interest in this report. The centrifugal pumps are controlled by throttle valves, which result in an energy loss. Chemical mixers are used to mix ClO2 into the pulp before proceeding into a holding tower where the bleaching process occurs.The energy demand of the different positions has been measured or calculated to be used in comparisons against new equipment. Quotations were requested and delivered from Valmet and Sulzer.

Syftet med detta examensarbete är att utveckla en datorlaboration baserat på aktiv ljudreglering för kursen reglerteknik allmän kurs för maskin och farkostteknik vid Kungliga Tekniska Högskolan KTH. Arbetet ska innefatta en utveckling av en matematisk modell av rörsystemet som ska regleras med en lead-lag regulator. Rörsystemet vid Marcus Wallenberg Laboratoriet ska användas som modellsystem, och den matematiska modellen ska baseras på mätningar insamlade på detta system.Den matematiska modellen skapades med hjälp av ett s.k. identifieringsexperiment och identifieringen baserades på en viktad minsta kvadratanpassning av insamlade frekvensdata. Modellen anpassades till en överföringsfunktion som visade sig ha ett nollställe i komplexa högra halvplanet, vilket motsvarar en svår bandbreddsbegränsning för den aktiva ljuddämpningen.

A current conveyor is an active building block that can be used to implement most active and passive components. It differs from the operation amplifier in that it uses current instead of voltage. The current conveyor also has significantly higher voltage gain over a broader frequency range. To simplify the construction of analogue circuits and increase the construction efficiency it is desirable to use a top-down methodology. This means that the whole system is partitioned into a hierarchy of subsystems.

A literature study and a field trial have been carried out in order to investigate the physiological response of potato plants to different soil moisture levels. Higher yield, quality and number of tubers can according to the literature be obtained if constant high soil moisture is kept during major parts of the growing season. A field trial was set up where drip irrigation was used as an alternative to conventional irrigation techniques to maintain high and constant soil moisture. The application of water in the drip irrigated area was monitored and adjusted on a daily basis so that the soil moisture stayed as close as possible to the recommended level. The sprinkle irrigated area was irrigated according to traditional practices with approximately 35 mm every 7th to 10th day depending on the whether.

Few would disagree that the media landscape has undergone significant changes the last decade. From bulky computers and plain mobile phones to portable High-Definition computers and multi-functional smartphones. Other media, such as newspapers and music, have evolved and prospered in a digitalized environment. The constant urge to digitalize aspects and functions of our daily lives seems almost instinctive. Television has taken further steps into this environment as it is now accepted and featured via the Internet.

A study was made to evaluate how current measurementscould help to determine how particles from fish farms are dispersed. During sixweeks of the summer 2012, two different current measurements were conducted.One of them consisted of measurements each fifth minute at 5 m and 15 m atthree locations for 14-16 days each. The other consisted of profilemeasurements at each location at four times during the period of six weeks. Forthe current measurements two instruments (model RCM 9) were used. A two weekmeasurement can give enough data to make an evaluation of how the currents at alocation will transport litter from a fish farm.

Objective ? To study the requirement of nursing care of the equine patient during eye treatment with a lavage system together with a constant rate infusion pump. Procedures ? Three veterinary nurses at ATG: s Hästsjukhus in Skara were asked nine questions at individual interviews. Inclusion criteria for participation in the interview were that the nurse should have treated equines with and without the infusion pump to the lavage system, but also traditionally with eye drops. Results ? The equine had a higher well-being since it experienced less stress during eye treatment with the infusion pump compared to treatment given by hand through the lavage system. The treatment would be more effective with constant rate infusion and save costs for the owner.

År 2012 gick ca 30 % av den totala energianvändningen till uppvärmning av bostäder och lokaler. Av den utgör uppvärmning av flerbostadshus och lokaler 60 % (79,5 TWh). Det finns därmed stor potential att minska energianvändningen inom bostadssektorn. En del i effektiviseringsarbetet är att se över regleringen av utrustningen som styr uppvärmningssystemen i bostäderna. Dagens reglering innefattar oftast en styrning som är direkt kopplad till utomhustemperaturen.