Sök:

Sökresultat:

131 Uppsatser om Woven acoustic damping frabrics - Sida 3 av 9

Bedömning av utländsk brytning och förståelighet hos personer med svenska som andraspråk före och efter en kurs i svenskt uttal

There is a lot of research made on second language (L2) learning (Jesney, 2004). However the relationship between foreign accent, intelligibility and acoustics within pronunciation tutoring is quite an unresearched area (Thorén, 2008). The aim of the study was to analyze how a course in Swedish pronunciation affected foreign accent, intelligibility and acoustics among L2-learners of Swedish. A total of 41 people participated in the study: 16 L2-learners, 4 native Swedish speakers consisting a control group and 21 perceptual assessors with Swedish as native language. The L2-learners foreign accent and intelligibility were rated by the listeners before and after a course in Swedish pronunciation on an eight-point Likert-scale.

Föräldrars missbruk och barnets bästa : en dokumentanalys av LVU-mål

The aim of this essay was to examine how the decision-making in LVU cases are motivated in the judicial decisions. How has the principle of whats in the best interest of the child been noticeable in these judicial decisions and how are the child's needs and the consequences for the child of the drug abuse been described? When the parents have been judged to have given a non acceptable consent, how have they been described and how has the parents described the situation?Our research is of a qualitative nature, a document analysis of judicial decisions in LVU cases. We analyzed eight court cases containing decisions from County Court, Fiscal Court of Appeal and The Supreme Administrative Court.Our results showed that parents were described in the judicial argumentation as negative stereotypes and a picture of unreliability were created. What was best for the child were not expressed in words but woven into the children's needs and in most cases the consequences of the abuse of drugs were not made clear..

Validering av Casmo-5M / Simulate-3

The objective of this M. Eng. Diploma work was to validate the new version, CASMO-5M, and compare the results with CASMO-4E, by using the same input in both programs. The tasks that were included in this work was to compare TIP-measures, k-effective curves (warm), k-effective curves (cold), the effect of void on k-effective, the isothermal temperature coefficient (ITC), the moderator temperature coefficient (MTC), damping ratio calculations, internal effect in a fuel bundle of a BA-rod, the speed of BA-out burn, impact of xenon, falling control rod, margins and isotopes.The TIP-measures showed that the differences were small for all reactors, at most, 6% nodal improvement by C5M (Casmo-5M) for Oskarshamn 3. The warm measurements of k-effective showed that C5M had a higher value for all cycles of Oskarshamn 1, 2 and 3 in comparison to C4E (Casmo-4E).

Olinjärt ultraljud för undersökning av sprickor i skelettet hos häst, en pilotstudie

Fissurer och odislocerade frakturer hos häst kan ibland vara svåra att upptäcka utan avancerad bilddiagnostik. Det är dock viktigt att diagnostisera dem i tid för att hindra att skadorna förvärras. Röntgen, datortomografi, magnetresonanstomografi och scintigrafi kan ge bra information men metoderna är relativt dyra, inte alltid tillgängliga, innebär en del säkerhetsrisker och kräver erfarna tolkare. Ultraljud är en mobil metod som anses ofarlig men dagens teknik är inte så användbar för att undersöka skelett. Inom industrin har nya ultraljudsmetoder utvecklats som tar hänsyn till olinjära egenskaper hos ljudvågorna.

Objektspecifik möbeltextil

My project aims to understand more about the methods used in making woven textiles on an industrial level, and how these tech¬niques can be adapted to create object-specific pieces. On visiting the furniture fair in Stockholm, I was surprised to see that most of the textiles used for furniture were so similar, despite the variation in the furniture itself. My project is about creating textile patterns that are specific for each piece.The idea behind the process could be used for any product, but the pattern I created is specifically for the armchair Accent by Yngve Ekström. I wanted to create the feeling of a pattern moving over the surface of the object and adjusting to it. I worked primarily with differences in density.

Analys av ljudspektroskopisignaler med artificiella neurala eller bayesiska nätverk

Vid analys av fluider med akustisk spektroskopi finns ett behov av att finna multivariata metoder för att utifrån akustiska spektra prediktera storheter såsom viskositet och densitet. Användning av artificiella neurala nätverk och bayesiska nätverk för detta syfte utreds genom teoretiska och praktiska undersökningar. Förbehandling och uppdelning av data samt en handfull linjära och olinjära multivariata analysmetoder beskrivs och implementeras. Prediktionsfelen för de olika metoderna jämförs och PLS (Partial Least Squares) framstår som den starkaste kandidaten för att prediktera de sökta storheterna..

Svampar associerade med raps : betydelse för uppkomst och grödetablering

Oilseed rape is an important crop in Sweden and is grown on about 90000 ha today. The interest in oil seed pro-duction is increasing because of growing demand and high prices for oil seed both in Sweden and Europe. However, an increased intensity in the oil seed production can bring higher risk of yield losses due to fungal diseases. The purpose of this study was to investigate what different fungi are associated with oilseed rape under field conditions and if their incidence is correlated to crop establishment problems. This study was carried out in three parts: 1) investigations on fungal community structure in roots and rhizosphere soils from young spring- and winter rape plants sampled in failed respectively good establishment patches in four fields, 2) investigations on the pathogenicity of fungi isolated from oilseed rape in controlled environment and 3) investigations on the effect of different fungicide seed treatments on germination and early plant development in a field soil naturally infested with damping off- and Verticillium wilt pathogens. The studies on community structure using a combined approach of standard fungal isolation techniques and DNA based methods revealed a high fungal diversity in three out of four studied fields of spring rape and winter rape. For some unknown reason, very few fungal species were identified from the fourth field.

Bättre passform på blusar - ett examensarbete i samarbete med Ka of Sweden

Arbetet gjordes i samarbete med Ka of Sweden där uppgiften varit att framställa enbättre passform för blusar i vävt material. Den nuvarande passformen saknar en brabystanpassning och har liknande ärmhål bak och fram. Jag valde att arbeta fram denteoretiska delen först och sammanställa måttlistor för att sedan arbeta fram denempiriska delen med konstruktioner, avprovningar och färdigt första prov.Resultatet av mitt arbete blev mycket bra och det har varit kul att få arbeta mot ett företag.The work was done in collaboration with the Ka of Sweden where the task was to produce a better fit for the blouses of woven material. The current fit does not have a good bust adjustment and have similar armhole front and back. I chose to work out the theoretical part first and compile lists of measurements and then work out the empirical part of constructions, fittings and finished the first sample.

Synsätt på barn och barnboken. Vilka signaler har barnbiblioteken fått under 1900-talet?

The aim of this masters thesis is to examine what intentions handbooks, laws and regulations have had about children and childrens literature, as we think that they can serve as guiding principles for childrens libraries in Sweden. The questions are: what signals have the childrens libraries got from the documents concerning the view of children and childrens literature during the 20th century? What has the social opinion about children been during the 20th century? How have children been seen during the 20th century? The method we used is a qualitative source analysis of mention above documents seen from a hermeneutical point of view. This analysis is woven together with the social opinion on children during the 20th century. Our results show that the aim of childrens literature before 1945 was a pedagogic and moral one.

Optimering av informationsinsamlingvid prototyptillverkning

This report discusses a method to detect divers in harbour environments usingpassive acoustic detection. The goal was to achieve as high detection as possiblewithout having too high false alarm rate. A short execution time was also desirable.By using the characteristic of an inhalation a band-pass filter was applied to the signalto improve the signal to noise ratio. After the filtering an energy estimation of thesignal was made. This energy estimation was later used in a frequency analysis, whichcould tell us if there were enough energy in the frequencies that correspond to adivers breathing frequency.

Ljudreducering av värmepump

This degree project handles acoustic measurements of the heat pump EcoAir 107, made by Enertech CTC AB. The sound from the three sound sources of the heat pump, fan, compressor and four way valve, have been measured to find out how they affect the total sound level of the product.Measures to attenuate the sound level have been developed and tested. By comparing these with the sound of the heat pump, in its original state, we have found out the measures which have best effects.The best attenuating measures came to be: taped openings and holes around the compressor space, isolating the top and the bottom of the whole construction, support of the fan bottom part and shielding of the sound source with a screen at a distance of 110 mmThese measures have been tested together and an average attenuation of the total sound level with 3,9 dB have been accomplished. In the front of the fan where the continuous sound is the strongest, the attenuation was 4,7 dB.This project is meant to be used as a guide by Enertech CTC AB:s during their future developing process..

Diskursteori möter idrott och hälsa

Through a discourse theoretical apparatus, this study examines Sweden's national curriculum, which is constructed for primary schools, pre-school class and leisure time classes. The study also examines the syllabus in physical education and the supplied comment material to the syllabus, the above mentioned material all valid from 1 July 2011. Using cultural researcher Marianne Winther Jørgensen's and communication researcher Louise Phillips interpretation of the political theorists Ernest Laclau and Chantal Mouffe's discourse theory, the study identifies several discourses in the new curriculums. The analysis shows that the curriculums writers construct their expectations through a rhetoric that is perceived as instructional and descriptive. The analysis identified eight discourses, woven into three "orders of discourse", the body, health and physical education.

Arga röster ökar muskelanspänningen

Syftet var att undersöka om exponering inför emotionella röster påverkar muskelanspänning och hjärtats slagfrekvens samt om det finns en samvariation mellan storlek eller längd på muskelanspänning vid aversiv emotionell input och grad av alexitymi. 24 studenter lyssnade på arga, glada och neutrala röster samtidigt som muskelanspänning mättes med EMG och hjärtats slagfrekvens med EKG. Grad av alexitymi mättes med Toronto Alexithymia Scale 20. Resultaten visade att arg eller glad röststimuli gav större muskelanspänningen än neutralröststimuli. Ingen skillnad i muskelanspänning fanns mellan arg eller glad röst.

Hastighetsmätning av kolvrörelser i pneumatiska cylindrar

The purpose of this thesis was to investigate different methods do measure velocity of pistons in pneumatic cylinders at Bosch Rexroth Teknik AB. Through information of velocity the adjustment of a cylinders damping can be done easier.A future transducer will be used by salesmen, service personnel and customers. This requires a sensor that is easy to apply and use. It is also desirable that the sensor is cheap. A number of possible methods to measure velocity have been presented.

Analys av arbetsmiljö vid kokarpåsvetsning samt förslag till förbättringar.

Denna rapport är ett inledande steg mot att förbättra arbetsmiljön för svetsare vid påsvetsning med Uddcomb Metoden i massakokare. Syftet med rapporten är att analysera problemet med värme och dålig luft samt förklara hur och varför problemet uppstår. I arbetet ingår även att ta fram olika lösningar för att slutligen hitta ett komplett system för ventilation och kylning. Den föreslagna lösningen består av ett integrerat kylsystem och ett koncept med mindre fläktar, kallade torpeder, som monteras på arbetsplanen vilka driver ut varm och smutsig luft snabbare ur kokaren. Den föreslagna lösningen utreds även ur ett ekonomiskt perspektiv.

<- Föregående sida 3 Nästa sida ->