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Dissertations / Theses on the topic 'Icke linjär analys'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Ristenvik, Emma, and Lina Vikström. "Fonologisk intervention baserad på en icke-linjär fonologisk analys : En multipel fallstudie." Thesis, Linköpings universitet, Institutionen för klinisk och experimentell medicin, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-137800.

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Children with phonological problems often come in contact with a speech and language pathologist for intervention. The intervention can be based on different theoretical frameworks, whereof non-linear phonology is one. The present study was carried out as a multiple single-case study with three participants aged 4;3-4;4 years. They had all been diagnosed with speech sound disorder but not yet been given any treatment. Before the intervention was started, three baseline measurements were made with the Swedish phonology test LINUS. The intervention took place once a week for five weeks and ended
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2

Jern, Isacsson Agnes, and Johansson Linda Malmgren. "Expressiv fonologisk förmåga hos barn i åldrarna 3;5 – 4;9 år som har konstaterade uttalssvårigheter : En icke-linjär fonologisk analys." Thesis, Linköpings universitet, Institutionen för klinisk och experimentell medicin, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-139712.

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Studiens syfte är att undersöka expressiv fonologisk förmåga hos barn i åldrarna 3;5-4;9 år som följer en atypisk tal- och språkutveckling och jämföra den med en åldersmatchad kontrollgrupp.  Ytterligare ett syfte är att undersöka huruvida det föreligger ett samband mellan expressiv fonologisk förmåga och impressiv lexikal förmåga. Elva barn med konstaterade uttalssvårigheter rekryterades från logopedmottagningar och språkförskolor i Stockholm och i Östergötland. Barnen testades i en för dem välkänd miljö med bedömningsmaterialet LINUS. Barnens svar audioinspelades och transkriberades och utif
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3

Thylén, Christian. "Förenklad numerisk analys av hängbroars verkningssätt : Utveckling av programmet SusB med tillämpning av CalFEM toolbox." Thesis, KTH, Bro- och stålbyggnad, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-36952.

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4

Petkoglou, Alexandros. "Stability of building structures using NLFEA including second order effects : Applications with the software ATENA-GiD." Thesis, KTH, Betongbyggnad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302435.

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In Sweden, prefabrication in the construction industry is a very common system. In prefabricated structures, there are various kinds of connections and generally many hinged connections. Therefore, it is of high interest to study the behavior of the prefabricated buildings in relation to the connections. Two main theories that can be used to evaluate our structures are the non-linear finite element analysis (NLFEA) and the second order effects. These two theories help to study the real behavior of the structures. Software that can apply these two theories is the ATENA-GiD. Therefore, it was ve
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5

Dagdelen, Turgay, and Shaho Ruhani. "Finite Element Analysis of the Dynamic Effect of Soil-Structure Interaction of Portal Frame Bridges - A Parametric Study." Thesis, KTH, Bro- och stålbyggnad, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231119.

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In Sweden, the railway sector currently faces the challenge of developing its first high-speed railway line, in response to the need to provide faster domestic and international transport alternatives. High-speed train passages on railway bridges can cause resonance in the bridge superstructure, which induce high accelerations that should not exceed the limits stipulated in the current design code. The most common bridge type adopted in Sweden is the portal frame bridge, an integral abutment bridge confined by surrounding soil. The soil possesses inherent material damping and radiation damping
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Chemlali, Alexander, and Rickard Norberg. "Shear cracks in reinforced concrete in serviceability limit state." Thesis, KTH, Betongbyggnad, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-169591.

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Shear cracks are formed when high oblique tensile stresses, e.g. in thin webs, exceed the tensile strength. A known example of this phenomenon is the extensive shear cracks that were found on the box-girder bridges Gröndal and Alvik, which were mainly caused by insufficient amount of shear reinforcement. In order to avoid this incident (inadequate amount of shear reinforcement), the reinforcement stress is often being assumed as a ultimate limit load in order to fulfill requirements regarding crack control in the service-ability limit state (SLS). This method has led to a overestimation of the re
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7

Gabrail, Philip, and Sam Samuelsson. "Analys av fältfördelning i kabelavslut av linjära och icke linjära material : Analysis of the field distribution in cable termination by linear and nonlinear material." Thesis, KTH, Data- och elektroteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188414.

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I nuläget används XLPE högspänningskablar vid överföring och distribution av elkraft och har en viktig roll i elsystemet. Kraftöverföring som sker över långa sträckor kopplas vidare från en punkt till en annan och sker med hjälp av kabelavslutningar. Dessa kabelavslutningar har en del sårbarheter ”felfunktion i kabelavslut” som påverkar hela elkraftsystemet. En analys och simulering av fältfördelning i kabelavslut genomfördes genom en teoretisk-respektive praktisk del i rapporten. Den teoretiska delen av rapporten genomfördes med hjälp av FEM programmet Comsol Multiphysics. Resultaten visade a
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8

Abdihakim, Ali, and Daniel Chikmamat. "En jämförelse analys av linjära och icke-linjära klassificerings metoder LDA och QDA för hjärn-dator gränssnitt." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254723.

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Hjärn-dator gränssnitt (BCI) är system, kommunikationsvägar som gör det möjligt för användare att interagera med externa enheter utan att förlita sig på kroppsrörelser. Denna växelverkan mellan människa och maskin är möjlig genom att tillåta systemåtkomst för att läsa hjärnans elektriska aktivitet, ofta via elektroencefalogram (EEG). Uppgifterna används därefter som träningsmaterial för att lära BCI att kartlägga och förutsäga selektiva hjärnmönster till vissa kommandon. Huvudmålet i denna projekt är att undersöka noggrannheten av två klassificerings metoder, linear discriminant analysis (LDA
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9

Isabell, Eriksson, and Niklas Karlsson. "Non-Linear Assessment of a Concrete Bridge Slab Loaded to Failure." Thesis, KTH, Betongbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188900.

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This thesis covers an investigation regarding the failure in the bridge slab of Gruvvägsbron, which was the result of the full scale test that the bridge was subjected to prior to demolition. Using the non-linear finite element software ATENA 3D, a model of the bridge was assembled, with the purpose to attempt to reenact the test procedure and realistically capture the failure load and behaviour. This in order to be able to conclude what kind of failure that occurred. The initial part of this thesis presents a summary of a conducted literature study, which aims to give deeper knowledge regardin
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10

Teklemariam, Daniel Mekonnen, and Bennie Hamunzala. "Design of Thick Concrete Beams : Using Non-Linear FEM." Thesis, KTH, Bro- och stålbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189141.

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The experimental studies performed on the behaviour of very thick concrete beams subjected to static loads have revealed that the shear mechanisms play an important role in the overall response and failure behaviour. The aim of this thesis is to recommend suitable design methods for thick concrete beams subjected to off-centre static concentrated load according Eurocode 2 by using non-linear finite element analysis (NLFEA). To achieve this task, Abaqus/Explicit has been used by employing constitutive material models to capture the material non-linearity and stiffness degradation of concrete. C
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11

Fu, Chaoran, and Bjartmar Hafliðason. "Progressive failure analyses of concrete buttress dams : Influence of crack propagation on the structural dam safety." Thesis, KTH, Betongbyggnad, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-169707.

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Concrete buttress dams are the most common type of concrete dams for hydropower production in Sweden. Cracks have been observed in some of the them. However, only limited research has been made concerning the influence of these cracks on the structural dam safety. In conventional analytical stability calculations, a concrete dam is assumed to be a rigid body when its safety is verified. However, when cracks have been identified in a dam structure, the stability may be influenced and hence the information of cracks may need to be included in the stability calculations. The main aim of this proj
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12

Hosseini, Rahimeh, and Anita Nolsjö. "The effect of reinforcement configuration on crack widths in concrete deep beams." Thesis, KTH, Betongbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208709.

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Reinforced concrete deep beams are known for applications in tall buildings, foundations and offshore structures. Deep beams are structural elements with length and height within the same magnitude and have significantly smaller thickness compared to a conventional concrete beam. Deep beams in bending have non-linear strain distribution compared to conventional beams where Bernoulli’s hypothesis is valid. Crack formation is a common problem in reinforced concrete structures, which reduce the durability of the structure. Once the concrete cracks the tension reinforcement carry the tensile force
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13

Angar, Mohammad Mustafa. "Reinforcement Layout in Concrete Pile Foundations : A study based on non - linear finite element analysis." Thesis, KTH, Betongbyggnad, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278214.

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The main topic of this thesis concerns the behavior of concrete pile cap supported by four piles with two varying positions of longitudinal reinforcements. The positions include top of piles and bottom of the pile cap. For this purpose, non-linear finite element models of a pile cap are created using software ATENA 3D. The goal was to observe which position of reinforcement yields the higher bearing capacity and to observe the failure modes in the models. To achieve the above goals, a short review of theoretical background concerning shear phenomena is performed. This, in order to enhance the
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14

Lillemo, Dennis. "Modelling masonry spires : An investigation." Thesis, KTH, Betongbyggnad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301245.

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Masonry spires are a typical part of church architecture. Since it is rare that masonry is used as a load-bearing material in the western world today, it is important to maintain and increase the knowledge of modelling masonry structures both from a maintenance point of view and to build new masonry structures. The purpose of this master thesis is to look at and evaluate some different methods to model masonry spires exposed to common loads such as gravity, settlement and wind. The spire of the Salisbury Cathedral is used as a template regarding geometry and mechanical properties for the model
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15

Allodi, Marco Alberto. "On Ultrafast Time-Domain TeraHertz Spectroscopy in the Condensed Phase: Linear Spectroscopic Measurements of Hydrogen-Bond Dynamics of Astrochemical Ice Analogs and Nonlinear TeraHertz Kerr Effect Measurements of Vibrational Quantum Beats." Thesis, 2015. https://thesis.library.caltech.edu/8949/10/marco_allodi_thesis_2015.pdf.

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<p>Much of the chemistry that affects life on planet Earth occurs in the condensed phase. The TeraHertz (THz) or far-infrared (far-IR) region of the electromagnetic spectrum (from 0.1 THz to 10 THz, 3 cm<sup>-1</sup> to 300 cm<sup>-1</sup>, or 3000 μm to 30 μm) has been shown to provide unique possibilities in the study of condensed-phase processes. The goal of this work is to expand the possibilities available in the THz region and undertake new investigations of fundamental interest to chemistry. Since we are fundamentally interested in condensed-phase processes, this thesis focuses on
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