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4545 Uppsatser om Digital cancellation estimation frequency phase amplitude fast - Sida 64 av 303
Gränsfall : en undersökning om skillnader mellan inomhus- och utomhusaktiviteter i förskolan
Fusarium head blight is a large problem world wide which reduces the yields and the quality of small grains. Shrunken kernels with decreased thousand kernel weight as an effect and pro-duction of mycotoxins are some of the problems caused by infection of Fusarium spp. To avoid toxin contaminated bulks to enter the food and feed chain it is important to have tools for prediction and analysis of the fungi and toxins. Good prediction methods are also impor-tant in the breeding industry since early identification in trials of lines with high resistance or susceptibility simplify the work. To compare different techniques for these objectives this project was initiated.
Biblioteken, upphovsrätten och de nya medierna
The explosion of new digital media puts pressure for developments within copyright law both in Sweden and internationally. These developments are taking place on two different international areas: (1) WIPO which is a part of the UN family and (2) the EU where a new directive on copyright law is being prepared and probably implemented during 2001. The aim of this thesis is twofold: (1) to study which considerations libraries must make when handling the new digital media both under today's copyright laws and under those which are being developed internationally. (2) What will be the consequences, for Swedish libraries, if the new EU-directive on copyright law is implemented in Sweden? By analysing current copyright laws, international treaties and the proposal for a new EU-directive as well as the national debate the thesis brings attention to a number of central issues for libraries.
Effect of low light intensities on dairy cows? behavior
The animal welfare act in Sweden states that dairy cows need to have at least a dim light present at night, but there are no recommendations for what intensity the light should have. It is unknown how cows perceive and react to low light intensities and earlier studies on this topic are limited. Red light as night light has also been suggested, based on the cows? inability to perceive red light. This have however been questioned.
The aim with this study was to investigate how four different light intensities affect dairy cows behavior.
Livet bakom skärmen : En kvantitativ studie om nätmobbning och nätkränkningar bland unga vuxna
Numera utgör Internet en självklar del i svenskarnas dagliga rutiner. Användandet av sociala medier och annan digital interaktionsteknik kan föranleda negativa konsekvenser för individen. Till följd av Internetanvändandet har en ny arena för kränkningar och mobbning uppstått. Tidi-gare forskning har i huvudsak studerat nätmobbning och nätkränkningar bland barn och ungdo-mar varpå föreliggande studie studerar fenomenet bland unga vuxna. Studien syftar i huvudsak till att undersöka förekomsten av nätkränkningar och/eller nätmobbning, via digital interaktions-teknik, bland unga vuxna, detta både ur ett förövar- och offerperspektiv.
Intern e-mailkommunikation på Akademiska sjukhusets röntgenavdelning : en kvalitativ intervjuundersökning
Purpose of the essay: The purpose of the essay is to, from the view of the nurses working at the x-ray infirmary; see how the internal e-mail communication is working as the main digital communication method at the x-ray infirmary.Material/Method: The material has been collected using qualitative interviews with eight nurses working at the x-ray infirmary. The material has then been analyzed through a theoretical perspective based on The Media Richness theory.Main results: The results of the investigation have shown that the nurses see the internal e-mail communication as relatively poor. The information that is sent out by their superiors is often too extensive, this making the screening work an extra work burden. These e-mails are also supplied to the whole infirmary instead of being addressed to specific individuals. Seen through a media richness perspective, the e-mail is a mediumrich communication medium that well could be used in the everyday communication at the infirmary as the main communication agent.
Hatar ni ____ så tryck gilla! Ett arbete om digital mobbning.
Sammanfattning/abstract
Syfte: Syftet med detta arbete är att få större förståelse kring hur mobbning utspelar sig i dagens skolmiljö, samt att göra människor uppmärksamma på vad mobbning via sociala medier innebär och vilka åtgärder som möjligen finns tillgängliga.
Teori: I arbetet har Olweus (1999) teori om mobbning tillämpats och Dunkels (2007) teori om mobbning som förekommer via sociala medier.
Metod: Metoden som använts har varit anonyma enkätundersökningar med elever i årskurs fem och sex på tre olika skolor, samt en enkätundersökning med organisationerna Friends och BRIS.
Resultat/Slutsats: Resultatet som kommit fram i detta arbete visar bland annat att om man kränker någon via internet så kan man vara anonym, samt att det är lättare att kränka någon via sociala medier då man inte behöver se hur den man behandlar illa reagerar. Utifrån elevenkäterna kunde man tyda att eleverna vill ha bättre vuxennärvaro på internet, och menade bland annat att det ska finnas någon som har uppsikt om i fall mobbning förekommer..
Moderna digitala modulationstekniker - en intuitiv demonstration
EN BILD SÄGER MER ÄN TUSEN ORD?
Idag finns det gott om studier som behandlar området digital kommunikation. Det är ett omfattande ämne och det har forskats mycket inom det. Det finns massvis med litteratur och vetenskapliga artiklar som beskriver olika digitala kommunikationstekniker. Studeras dessa inses det ganska fort att de håller en hög och komplex nivå.
The effect of rapeseed oil and palm oil supplement and milking frequency on milk yield and milk fat quality
Milk fat is an important feature in many different milk products and other foodstuffs and it is often crucial for the dairy plants that the milk fat is stable for different manufacturing processes. Lipolysis is the enzymatic degradation of fat and is the one of the causes for an elevated amount of free fatty acids (FFA) in milk. Further, the change in fatty acid (FA) composition in milk can affect the stability of the product and also the manufacturing process. Both internal and external factors, at farm level or at the dairy plants can affect both FA composition and content of FFA. Milking frequency (MF=number of milkings per cow and day) and the composition of feed are two examples of factors generally performed at farm level.
The objective of the present study was to evaluate how FA composition of milk and amount of FFA are influenced by two different ingredients supplemented to concentrate.
Utveckling av snabbfäste och verktyg för byte av sågklinga
This thesis is based upon the work done at Westinghouse electric company (WEC)inVästerås during the spring semester of 2015 and describes the development of a quickcoupler with associated blade changing tool. These are meant to be used togetherwith a sawing tool that the company uses for the dismantling of nuclear reactors,which is performed under water.The aim of the thesis was to develop a complete manufacturing documentation withdrawings and related CAD models which Westinghouse later can use to manufacturethe tool and the quick coupler. It was also included in the assignment to, if necessary,modify parts of the saw tool to adapt these to the intended blade changing tool.A number of visits to the company's workshop was made during the time to study thesaw that the thesis is based upon. The purpose of these visits was to get a better ideaof the dimensions, construction and the field of use of the saw. On three of thoseoccasions various engineers and consultants accompanied us to discuss possibleproblems with different ideas.This was interspersed with information in the form of literature studies on quickcouplers to create a clearer picture of the nature of the task.When enough information had been gathered a functional analysis was made to dividethe main problem into subthis phase the idea and concept generating process took place.The methods used for this was mainly brain writing and brainstorming.
Media Literacy ? En digital klyfta? - En studie fokuserad på olika generationer av yrkesverksamma pedagoger och deras uppfattningar kring mediekritisk undervisning.
Titel: Media Literacy ? En digital klyfta? En studie fokuserad på olika generationer avyrkesverksamma pedagoger och deras uppfattningar kring mediekritisk undervisning.Författare: Marcus EkmanKurs: Examensarbete i Medie- och Kommunikationsvetenskap, Institutionenför journalistik, medier och kommunikation vid Göteborg universitetInstutition: Institutionen för journalistik, medier och kommunikation vid Göteborguniversitet.Uppdragsgivare: Institutionen för journalistik, medier och kommunikation vid Göteborguniversitet. Kontaktperson: Karin Fogelberg.Handledare: Annika BergströmSidantal: 53, exklusive bilagaMetod: Kvalitativa samtalsintervjuerMaterial: Inspelade samtalsintervjuerCritical Literacy, Media Literacy, Media Syfte: Syftet med min studie är att ta reda på hur olika generationer av yrkesverksammagymnasiepedagoger uppfattar och förhåller sig till den mediekritiska delen i sin egenundervisning.Huvudresultat: Resultatet i min undersökning visar att det finns ett stort behov av att idagundervisa elever i mediekritik. Media Literacy-undervisningen måste omfattas av alla eleveroch på ett tydligare vis för att alla skall kunna tillägna sig de nödvändiga kompetenser som behövs idag, vilket även förespråkas utav högre instanser. De rådande styrdokumenten måste omarbetas och omformuleras kring den här delen av undervisningskontexten.
En analog spelare i en digital värld? : En studie om användningen av digitala verktyg på Södertörns högskola
Denna studie syftar till att, ur ett multimodalt perspektiv, få kännedom om hur digitala verktyg används av lärare i undervisningssyfte på Södertörns högskola, samt studenters inställning till de medietekniska hjälpmedlen. Detta har gjorts med hjälp av observationer, intervjuer och enkätundersökningar som genomfördes med lärare och studenter.Det resultat som observationerna gav stämde överens med resultatet från intervjuer och enkätundersökningar. Studien visar att digitala verktyg används sparsamt av lärare på högskolan. Föreläsningar med PowerPoint-presentationer som i stort sett enbart innehöll text och bilder var i särklass det vanligaste undervisningsredskapet. Lärarna har generellt en positiv inställning till digitala verktyg men på grund av tidsbrist och begränsningar i hur och vilka digitala hjälpmedel som får användas i undervisningen hämmas de.
Vad är ?rätt? gjutkvalitet? Hur uppnås det?
Ever since ABB has begun diecasting their rotors instead of permanent mold casting it,variation in the quality of the cast has arisen. Diecasting is performed in three differentmachines, M1, M2, M3 with 400, 660 respectively 800 tons of die locking pressures.The aim of this thesis is to answer the following questions:What is the ?right? cast quality? How is the right quality achieved?For sizes 160-180 solutions will be proposed that consider eccentricity between thelaminate and the short circuit ring as well as elimination of the thin Al film that appearson the outer periphery of the rotors.Through considering the statistic material the most often diverging rotor type has beenidentified and one of the actual rotors has been sent to a laboratory to be analyzed inorder to establish the current defects. The result of the analysis shows that there areplenty of gas- and oxide-porosity.It has been proved that every time the dies temperature decreased below 120°C thecontent of gas porosity increased. It is due to rapid solidification of metal that flowsthrough the ?cold? laminate.It has confirmed that enhanced porosity in squirrel cage causes high impedance in therotors.
Kvalitetskontroll av utskrifter från Kodak Approval XP4
When using the digital halftone proofing systems, a closer print match can be achieved compared to what earlier couldbe done with the analogue proofing systems. These proofing systems possibilities to produce accurate print match canas well lead to producing bad print matches as several print related parameters can be adjusted manually in the systemby the user. Therefore, more advanced knowledge in graphic arts technology is required by the user of the system.The prepress company Colorcraft AB wishes to control that their color proofs always have the right quality. This projectwas started with the purpose to find a quality control metod for Colorcraft´s digital halftone proofing system(Kodak Approval XP4).Using a software who supports spectral measuring combined with a spectrophotometer and a control bar, a qualitycontrol system was assembled. This system detects variations that lies out of the proofing system´s natural deviation.The prerequisite for this quality control system is that the tolerances are defined with consideration taken to the proofingsystems natural deviations.
Att använda slumpen inom digitalt fotografi
This project investigates how team sports can be used to include young women in public space aswell as how through the addition of a sporting facility adjacent to three schools can be used as a stepping stone for the young people of Dharavi to have a chance at a brighter future..
Direct-EGR tillämpat på HCCI
The Homogeneous Charge Compression Ignition (HCCI) engine is promising in terms of lowNOx, low particulates and high efficiency. Due to its homogeneous charge, where thecombustion starts almost simultaneously from a number of points in the combustion chamber,only lean mixtures are possible to burn because of the resulting rapid combustion, which is muchfaster than the combustion in an SI-engine or a diesel engine. When richer mixtures are used thecombustion will start earlier and also be more violent.To phase the combustion later and lower the combustion speed, external cooled EGR can beused. The EGR-system used in this thesis uses a divided exhaust channel where one channel andits corresponding valve are used only for transporting EGR back to the intake system.Consequently the EGR-valve is connected to the intake pressure. This system is called Direct-EGR (D-EGR).Engine tests verified that the CA50 indeed is phased later when cooled EGR is used.