Sökresultat:
1199 Uppsatser om Short interruption - Sida 15 av 80
Planering av produktionsflöden. Vad kan påverkas i projekteringsfasen?
Göteborg Energi AB är ett bolag med höga ambitioner att säkerställa ett stabilt distributionsnät för sina kunder. Med ett säkerställande följer åtgärder i form av beräkningar för komponenter som transformatorer av olika märkeffekt, hög- och lågspänningssäkringar och andra kritiska skyddsanordningar som t.ex. reläskydd. Vid ett flertal tillfällen under de senaste åren har det uppmärksammats en problematik där ett fel i lågspänningsnätet har löst ut anslutande transformator. Felet har grundat sig en svag selektivitet mellan transformatorsäkring och lågspänningssäkring.
Statarsystemets avskaffande
The purpose of this essay was to investigate the procedure surronding the abolition of the Statarsystem as well as trying to see possible motives for this abolition. In oder to do so different records from Svenska Lantarbetarförbundet and Svenska Arbetsgivarföreningen were examined. It soon became apparent that the procedure itself was not to hard. Both parties wanted the system to stop. In short, Svenska Lantarbetarförbundet´s motives were that statare did not receive a good social status and also that the system smothered statarna.
Börshandlade fonder eller aktieindexfonder? : En studie som jämför avgifter och handel
Problem: For what type of investors are index funds versus exchange-traded index funds best suited?Objective: The purpose of the paper is to determine how an index fund or an exchange-traded index fund (ETF) suits different types of investors with different requirements in terms of time frame, investment size and purpose of investment. The comparison is based on fees and trade practicality. This is going to describe the advantages and disadvantages with the two different financial instruments.Method: The study is a comparative study using two methods; one of which is a case study, the other is a qualitative interview. The case study focuses on fees and is made on an exchange traded fund (XACT OMXS30) and a simple equity index fund (Erik Pensér equity enhanced index).
Ett tält för sju dagar : Festivaltält i papper
SummaryAt the summer festivals and it?s campsites there are each year thousands of tents left behind. Last year, at the Peace and Love festival in Borlänge, 220 tons of garbage was left behind at the festival area, much of which is tents. 69% of festival goers have at some point left behind a tent on a festival campsite. Many of these tents is purchased very cheaply, for a single festival.
Selektivitet mellan hög- och lågspänningssäkringar ? I anläggningar med transformatorer ? 500 kVA
Göteborg Energi AB är ett bolag med höga ambitioner att säkerställa ett stabilt distributionsnät för sina kunder. Med ett säkerställande följer åtgärder i form av beräkningar för komponenter som transformatorer av olika märkeffekt, hög- och lågspänningssäkringar och andra kritiska skyddsanordningar som t.ex. reläskydd. Vid ett flertal tillfällen under de senaste åren har det uppmärksammats en problematik där ett fel i lågspänningsnätet har löst ut anslutande transformator. Felet har grundat sig en svag selektivitet mellan transformatorsäkring och lågspänningssäkring.
Förslag till vägbro vid Hössnamotet - ? Konceptframtagning och kontrollberäkning av bro över väg 40
Göteborg Energi AB är ett bolag med höga ambitioner att säkerställa ett stabilt distributionsnät för sina kunder. Med ett säkerställande följer åtgärder i form av beräkningar för komponenter som transformatorer av olika märkeffekt, hög- och lågspänningssäkringar och andra kritiska skyddsanordningar som t.ex. reläskydd. Vid ett flertal tillfällen under de senaste åren har det uppmärksammats en problematik där ett fel i lågspänningsnätet har löst ut anslutande transformator. Felet har grundat sig en svag selektivitet mellan transformatorsäkring och lågspänningssäkring.
Stärkelsenedbrytningens betydelse för mjölkkors konsumtionsmönster och mjölkproduktion :
Feed intake in dairy cows is regulated by a variety of factors influencing hunger and satiety.
One of the regulation systems includes the short chain fatty acids produced during feed
degradation in the rumen. Starch can be digested either in the rumen where short chain fatty
acids are produced or in the small intestine where glucose is the end product. Since glucose
does not have the same effect on satiety that short chain fatty acids have, the site of starch
digestion might be an important factor that affects feed intake and milk production. The aim
of this study was to investigate the effects of site of starch digestion on feeding behaviour
(feed intake, consumption time, and eating frequency) and milk production.
Because feeding behaviour is closely connected to the cows? environment, the study also
included observations of behaviour.
Three different feed rations were compared.
Simulering av simulinkmodeller medExtended Kalman FilterTidsoptimering av integrering
Simulation of different systems can be done using a graphical model description of the system based on block diagrams. The simulation software Matlab/Simulink offers a lot of possibilities to describe a huge number of systems, which can be linear as well as nonlinear. The simulation using Matlab/Simulink is done by integration based on different kinds of numerical methods.When nonlinear Simulink-models are simulated, it is often interesting to apply a Kalman filter to handle the noise that may occur within the process as well as corrupting the measurement. However, application of such a filter leads to an extensive time-consumption despite using fast computers. The reason is that the existing Matlab functions are not constructed for time optimal evaluation.
Attityder hos lastbilsförare gällande mat i samband med långa, korta -respektive blandade transportsträckor
Martinez, A (2011). Attityder hos lastbilsförare gällande mat i samband med långa -respektive korta transportsträckor. Akademin för hälsa och arbetsliv, Högskolan i Gävle. AbstractBackground: The profession as a lorry driver is in many aspects very risky. Factors such as time directive, poor diet and shift work characterize the profession and puts drivers' health at risk. Current research shows that the vast majority of lorry drivers are overweight, suffer from high stress related to work and have on average a very low consumption of fruits and vegetables.
INTRANÄT : Ett medium för kommunikationsverktyg
This report explains how different communication tools can be used in a company?s intranet. It gives a short description of the different parts in an intranet and their field of application, and what communication means. It?s only the communication tools that the company uses that we are illuminating in this report.
Risk- och sårbarhetsanalyser för smarta elnät
The electrical grid needs to be changed in the future in order to manage more distributed and renewable generation and also to make it possible for electricity consumers to be more active and aware of their electricity consumption. This future grid is usually referred to as a smart grid. With the transition to a smart grid, new challenges occur. One method to determine those challenges is to perform risk and vulnerability analyses. InStockholm, the new urban district Stockholm Royal Seaport is built.
Nollföljdsmodellering av transformator-Beräkningar av följdproblem vid ökad kablifiering på mellanspänningsnivå
Historically transformers with system earth equipment have been modeled as open circuits in zero sequence. This approximation has been satisfying, but lately it has been discovered that equipment on one side of the transformer have responded to faults that occurred at the other side. Most of these problems took place when the majority of the system on the secondary side of the transformer contained cables. These findings have led to questioning whether or not the former model of the transformer in zero sequence is correct. This report investigates if it is necessary to represent the transformer in zero sequence in another way than it is usually done today.
God of Pop? : En undersökning om hur Gud porträtteras inom populärmusik
One of the most discussed archaeological subjects is the neolitisation, and the start of a neolithic lifestyle which is characterized by several significant events. The traditional view has been that settled people were cultivating and breeding, but this picture has been questioned and changed in later years. The development is principally based on two models; that already neolithic people immigrated and took over, or that the new lifestyle gradually developed out of the existing cultures. Southern Scandinavia was characterized by a settlement pattern with permanent settlements which were complemented by temporary special settlements, but in time more domestic settlements originated. On the British Isles the settlements didn´t consist of permanent agricultural settlements but instead did the people here move freely between several short term settlements. .
Mode & identitet : - Att visa sin insida med utsidan
AbstractAim: The purpose of this thesis is to research how women think about fashion in relation to their self and to others. Can clothes be an expression of who we are who we want to be and how we look at others? What are the main characteristics in this type of communication and what kind of information can be distributed using this tool?Method/Material: InterviewsMain results: Clothes can work as a tool to show who we are and what we are, mainly on short term. We use clothes for different purposes, sometimes we what to be seen and really show who we are and what we stand for and sometimes we just what to go with the flow and not be seen at all. We will always have a physical need for clothes but it is also a natural and important part of our individual expression and our identity.Keywords: Fashion, Clothes, Identity, Lifestyle.
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..