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990 Uppsatser om Forced oscillation techniques - Sida 1 av 66
Automatisk bedömning av reglerkretsarsprestanda
In this thesis, a computer program that in a simple way can calculate the performance of control loops at the refinery Preemraff Lysekil has been created. The computer program has been adapted to the environment at Preemraff Lysekil. Theories for evaluation has been studied in aspect of reliability and of automatic implementation. The evaluation has been carried out from data collected directly from control loops at the refinery and from simulated control loops with implemented errors. Among the studied methods are Harris index and Stattin´s oscillation index.
Laserskuren intarsia : ett komplement till äldre intarsiatekniker
The purpose of this report is to explore how modern technology can work againstolder craft techniques. The focus of the research will depend on what conditions areoptimal for cutting marquetry with laser technology. In my work I account for thehistorical background of the various techniques and then through own practical testsexamine whether the laser technology can complement the traditional techniques..
Memoreringstekniker utifrån en pianists perspektiv
The purpose of this essay is to discuss different memory techniques used by pianists so I can feel secure while performing during concerts. How do pianists learn to memorise music? According to me, are certain memorisation techniques more effective than others? Do pianists use different methods depending on repertoire? To find my answers, I have studied two other pianists? outcomes on the subject as well as applied my chosen memorising techniques on five pieces from different epochs. These techniques include visualising my fingers when they play on the keyboard, listening to the pieces many times, practicing short specific parts one hand at a time, singing the melody while playing the accompaniment, studying the scores without playing, as well as analysing the harmonic sequences..
Reglering av veka strukturer med multipla sensorer
In this master thesis, control algoritms using arm side sensors are investigated for an industrial robot. The sensors can be position encoders placed after the gearbox and accelerometers on the robot arms. Control strategies are discussed and evaluated for different models of the robot, after which chosen strategies are applied to a realistic model. Control algoritms using arm side sensors (LQ, dual-loop and PD-PID) are compared to a PID-controller that only uses measurements of motor position for feedback control. The comparison are done with respect to disturbance rejection, oscillation damping, robustness and tracking performance of a reference trajectory.
Skeppsteknik : en studie om teknikutveckling hos skepp i Medelhavet
Techniques used in the building of a number of ships from the Mediterranean will be presented in this paper. The two techniques thnat will be discussed are shell-based technique and skeleton-basedtechnique. An attempt to clearify and delineate the transition between these two techniques will be made. The possible reasons for transition will then be described and discussed. The development ofthe techniques is going to be identified with help from four wrecks by analyzing their edge joineriesand this facts will be used as a basis for a chronological presentation.
Undersökning av modulationsscheman för existerande bredbandsteknologier
In this thesis some different modulation schemes for xDSL-techniques are compared. The investigated techniques are ADSL, G.lite, ADSL2, HDSL, SHDSL and VDSL. The modulation methods used are DMT, CAP and different versions of PAM. Several broadband techniques also use Trellis Coded Modulation (TCM) to increase the coding gain of the transmission. For each one of the different modulation methods the signal-to-noise ratio is calculated for generating a bit error rate probability of 10-7.
Attityder till implementering av precisionsodlingsteknik :
Different techniques for precision agriculture have been available during the last decade.
Some of them are more widely used than others. The main purpose of this thesis was to
investigate the different attitudes to precision agriculture that exists among farmers and
advisors in Sweden.
Eight advisors and sixteen farmers were asked for their opinion of a number of specific
techniques for precision agriculture, such as yield-mapping, precision liming, the Yara
Nitrogen Sensor and site-specific fertilization with phosphorous and potassium. They were
also asked to describe the way in which the counselling in Swedish agriculture is used and
also about it's importance for the adaptation of new techniques.
The high costs are mentioned to be one of the most important reasons why precision
agriculture hasn't been more widely spread. Several farmers refer to their farms as too small to bear the costs that come with the techniques. The individual interest for technique among the potential users plays an important role.
MÖJLIGHETERNA MED CLUSTERED COLUMNSTORE INDEXES & IN-MEMORY OLTP
Clustered Columnstore Indexes (CCI) and In-Memory Online Transaction Processing (OLTP) are two new techniques that were introduced with Microsoft?s new database management system SQL Server 2014.The thesis analyzes these two techniques, describes the theory behind them and also the background information that needs to be known to understand more of the new techniques. Performance tests of the new techniques have been performed to see how much faster response time we can get and less storage we need to use where the result is represented by performance diagrams and a compression diagram. This thesis is a cooperative work with a company called Trimma and the result is used as support to decide if these new techniques could be of advantage for the company.The test consists of five test queries with different purposes. The result is illustrated by diagrams that show the result and another diagram that shows how much the data gets compressed with the different techniques.
Kraftskillnad i olika Muay Thai tekniker: händer armbågar och sparkar mot huvudet
Background: In the martial art of Muay Thai, techniques are used with hands, elbows, knees and kicks. The contestants are divided into different weight classes and experience levels. The Swedish martial arts association has decided that techniques with elbow are not allowed in B-class. Why is it so?Objective: The aim of this study was to investigate whether the martial arts delegation decision to restrict techniques with elbows to the head in the B-class is justified.
Härskarens nya kläder : Vad händer när härskartekniker flyttar in på Facebook?
In this thesis we focus on the issue of master suppression techniques and how they take form on Facebook. The research in area of master suppression techniques online is limited and therefore the purpose of this thesis is to create a greater understanding of the online environment of Facebook. We have used a method of netnographic observation studies and content analysis to create a triangular perspective of the subject. Based on the result of our observation studies we draw the conclusion that you can see signs of some of the master suppression techniques on Facebook. We also argue why others don?t show up.
Arbetsklimatet på militärhögskolan Karlberg : Finns det skillnader i upplevelser/erfarenheter mellan män och kvinnor på officersprogrammet i kullen 07-10 vad gäller härskartekniker?
This study focuses the gendered relations of the Military Academy of Karlberg. More specific the study is investigating the experiences among young women and men cadets of suppression techniques. The purpose of the study is to get more knowledge about the work climate and suppression techniques at the officers? training program 2007/2010. The research questions employed for the study were:- Do the women and men officer students/cadets have any experiences of master suppressiontechniques at the officers? training program?- What kind of master suppression techniques occur at the officer?s training program?- What kind of master suppression techniques do women experience?- What kind of master suppression techniques do men experience?The study is a survey and data were retrieved by a questionnaire sent out to the participants.
Behuggning av betongytor: ett test av hantverksmetoder
During the latter half of the 18th century, when concrete started seeing general use in
modern cities, the use of different methods to give the concrete a finished surface texture
saw use. One of these was using different methods of mechanically altering the surface using
a slew of cutting and crushing techniques with mallet and chisel. This was done in order to
hide the often dull and gray look of concrete, and allude to other more expensive and
luxurious stones. The work would possibly have been done by experienced stonemasons,
using much of the same techniques and tools they would have used while working natural
stones. Or did they? This essay explores, through the use of traditional handcrafts and tools,
the claim that the working of concrete surfaces can be done with the same tools and skillset
as the working of natural stone.
Då den goda smaken utmanades : estetik och marknad i svensk konst 1885
What is discussed here are the events taking place in Sweden in 1885, a turbulent year in Swedish art history. It is shown how the conception of Swedish art, in creating a Swedish identity in art, was expanded. Two exhibitions were analyzed, Akademiens för de fria konsterna Jubileumsutställning and Opponenternas utställning. While the artists exhibiting at the Academy were using traditional strategies and thechniques, several artists at Opponenterna, were using modern techniques they had learned outside the Academy, mostly in France. These techniques were: experimenting with perspective and the use of empty spaces in mediating ambiance. The third strategy was that of individualization by moving closer to the motif.
El nino- Southern ocsillation och de tropiska cyklonerna i Stilla havet
ReferatDe tropiska cyklonerna har både skrämt och fascinerat människor genomtiderna och det pågår en hel del forskning kring dem. I detta arbete studeras omEl niño?Southern ocsillation påerkar antalet, intensiteten eller livslägden pådetropiska cyklonerna i Stilla havet. Till detta anväds temperaturdata frå bojarsom den amerikanska väertjästen National Oceanic and AtmosphericAdministration placerat ut i Stilla havet och insamlad information kring detropiska cyklonerna. Studien baseras pådata frå en 15ås period under åen1995 till 2009.Studien visar bland annat att antalet tropiska cykloner påerkas relativt mycketav de olika faserna i El niñ? Southern oscillation.
Finns det daglig variation i resistans i de nedre luftvägarna hos häst?
Among researchers it has been established since decades that humans and animals have an internal biological clock that controls certain physiological mechanisms. One example regarding humans is the impairment of lung function during the night, causing the phenomenon ?nocturnal asthma? among asthmatics. Only a few studies concerning respiratory circadian rhythm in horses have been done previously and they showed a daily variation in horses with a chronic or an acute respiratory disease. The technique used in those studies was the conventional technique, which is invasive and less sensitive than the technique used in this study.