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Dissertations / Theses on the topic 'STEEP PROBABILITY'

Author: Grafiati

Published: 11 September 2023

Last updated: 19 July 2025

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1

Seyedali, Seyed Mohamad. "Getting a Grip on Scrap : Applying Probability and Statistics in Analyzing Scrap and Steel Composition Data from Electrical Steel Production." Thesis, KTH, Materialvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-165413.

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This study intends to better control the final composition of steel by trying to have a better knowledge of elements including copper, nickel, molybdenum, manganese, tin and chromium in the scrap. This objective was approached by applying probability and statistical concepts such as normal distribution, multiple linear regression and least square and non-negative least square concepts. The study was performed on the raw materials’ information of Ovako Smedjebacken and Ovako Hofors, two steel production plants in Sweden. The information included but were not limited to the amount of the differe

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2

Reynolds, James Bernard. "Advanced analysis and reliability-based design of steel scaffolding systems." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/11626.

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This thesis presents a comprehensive investigation of the advanced analysis, reliability-based design and optimisation of steel support scaffolding systems. Support scaffolding systems are used to provide temporary support to timber formwork systems, reinforcement, concrete, workmen and equipment, during the construction of permanent structures such as buildings and bridges. Stick-type steel scaffolds with cuplok joints are the focus of the thesis. This thesis includes the collection and statistical analysis of shore load effects occurring as a result of construction dead and live loads. A com

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3

Salgar, Chaparro Silvia Juliana. "Understanding of Microbiologically Influenced Corrosion in Carbon Steel Pipelines: Towards Developing a Methodology to Assess Probability of Failure." Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/81959.

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This dissertation evaluated critical aspects of microbiologically influenced corrosion (MIC) and generated valuable information for the understanding and management of this corrosion threat. The main outcomes include a better understanding of the preservation requirements for field samples to obtain accurate results; an innovative approach for MIC assessment that consists of the identification of total and active microbial communities; knowledge of the effect that environmental and operational conditions can have on microbial communities and MIC.

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4

Chatterjee, Aritra. "Structural System Reliability with Application to Light Steel-Framed Buildings." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/74879.

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A general framework to design structural systems for a system-reliability goal is proposed. Component-based structural design proceeds on a member to member basis, insuring acceptable failure probabilities for every single structural member without explicitly assessing the overall system safety, whereas structural failure consequences are related to the whole system performance (the cost of a building or a bridge destroyed by an earthquake) rather than a single beam or column failure. Engineering intuition tells us that the system is safer than each individual component due to the likelihood o

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5

Bonneric, Matthieu. "Etude de l'endommagement en fatigue de câbles d'acier sous sollicitations complexes." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLC045.

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Les câbles d’acier sont utilisés comme renforts au sein des pneumatiques poids lourds, et servent notamment à supporter les efforts dus à la pression de gonflage et au poids du véhicule. Un câble est un ensemble de fils d’acier perlitique assemblés en hélices sur différentes couches. Il existe donc de nombreuses possibilités d’assemblage pour définir l’architecture d’un câble. Lors de leur sollicitation en service, les câbles sont soumis à des chargements cycliques à l’origine d’un endommagement en fatigue. Dans un contexte de réduction de la consommation et d’allègement des véhicules, la comp

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6

Rota, Bernardo João. "Calibration Adjustment for Nonresponse in Sample Surveys." Doctoral thesis, Örebro universitet, Handelshögskolan vid Örebro Universitet, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-51966.

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In this thesis, we discuss calibration estimation in the presence of nonresponse with a focus on the linear calibration estimator and the propensity calibration estimator, along with the use of different levels of auxiliary information, that is, sample and population levels. This is a fourpapers- based thesis, two of which discuss estimation in two steps. The two-step-type estimator here suggested is an improved compromise of both the linear calibration and the propensity calibration estimators mentioned above. Assuming that the functional form of the response model is known, it is estimated i

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7

Zarov, Filipp. "Modeling fault probability in single railroad turnouts in Eastern Region, Sweden, with the use of logistic regression models : A step from preventive to predictive preventive maintenance in railway maintenance planning." Thesis, KTH, Transportplanering, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-273639.

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Turnouts are an important part of railway infrastructure for two reasons: infrastructure andmaintenance. For the infrastructure they provide the flexibility to allow the formulation and branchingof railway network and for maintenance they consume a large part of maintenance budget and have aprominent place in maintenance planning policy and activities. This is because as a “mechanical object”,a turnout often experiences malfunctions. The problem becomes even more complicated, since a turnoutis composed of many different parts and each of them fails for very different reasons (e.g. switch blade

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8

Alves, Clever Gama. "Analise de confiabilidade em fadiga : estudo de caso : braço de controle de suspensão automotiva." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264943.

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Orientador: Itamar Ferreira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-11T17:15:29Z (GMT). No. of bitstreams: 1 Alves_CleverGama_M.pdf: 6160446 bytes, checksum: 5afa2cd3848388247de70ceee21a3cf8 (MD5) Previous issue date: 2008<br>Resumo: O presente trabalho descreve um procedimento de aprovação de um braço de controle de suspensão automotiva sujeito a fadiga de alto ciclo, ao mesmo tempo em que propõe uma sistemática alternativa de validação baseada em conceitos e teorias estatísticas de confiabilidade

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9

Fox, Clayton D. L. "Modeling Simplified Reaction Mechanisms using Continuous Thermodynamics for Hydrocarbon Fuels." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37554.

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Commercial fuels are mixtures with large numbers of components. Continuous thermodynamics is a technique for modelling fuel mixtures using a probability density function rather than dealing with each discreet component. The mean and standard deviation of the distribution are then used to model the chemical reactions of the mixture. This thesis develops the necessary theory to apply the technique of continuous thermodynamics to the oxidation reactions of hydrocarbon fuels. The theory is applied to three simplified models of hydrocarbon oxidation: a global one-step reaction, a two-step reaction

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10

Guerchais, Raphaël. "Influence d'accidents géométriques et du mode de chargement sur le comportement en fatigue à grand nombre de cycles d'un acier inoxydable austénitique 316L." Thesis, Paris, ENSAM, 2014. http://www.theses.fr/2014ENAM0020/document.

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L'objectif de ces travaux de thèse est d'étudier l'influence de la microstructure et de défauts géométriques sur le comportement en fatigue à grand nombre de cycles (FGNC) d'un acier inoxydable austénitique 316L. La méthodologie proposée s'appuie sur des simulations par éléments finis (EF) d'agrégats polycristallins qui permettent de décrire les champs mécaniques à l'échelle des mécanismes impliqués dans les processus d'amorçage de fissures de fatigue.Une étude numérique préliminaire, s'appuyant sur des données expérimentales issues de la littérature, est conduite sur un cuivre électrolytique

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11

Handika, Nuraziz. "Multi-fissuration des structures en béton armé : analyse par corrélation d'images et modélisation." Thesis, Toulouse, INSA, 2017. http://www.theses.fr/2017ISAT0001/document.

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La modélisation de la fissuration du béton armé à l'aide de la méthode des éléments finis nécessite de prendre en compte, outre l'endommagement du béton, trois phénomènes : la spécificité de la liaison acier-béton, l’autocontrainte due au retrait, et l'effet d'échelle probabiliste dû à l'hétérogénéité du béton. Cette recherche s'appuie sur une campagne expérimentale pour obtenir le comportement de la liaison et les caractéristiques des fissures sur des éléments de structures. La technique de corrélation d'images numériques a été utilisée pour observer l'espacement et l'ouverture des fissures.L

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12

Saleem, Rashid. "Towards an end-to-end multiband OFDM system analysis." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/towards-an-endtoend-multiband-ofdm-system-analysis(e711f32f-1ac6-4b48-8f4e-58309c0482d3).html.

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Ultra Wideband (UWB) communication has recently drawn considerable attention from academia and industry. This is mainly owing to the ultra high speeds and cognitive features it could offer. The employability of UWB in numerous areas including but not limited to Wireless Personal Area Networks, WPAN's, Body Area Networks, BAN's, radar and medical imaging etc. has opened several avenues of research and development. However, still there is a disagreement on the standardization of UWB. Two contesting radios for UWB are Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) and DS-UWB (Dire

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13

Piegay, Nicolas. "Optimisation multi-objectif et aide à la décision pour la conception robuste. : Application à une structure industrielle sur fondations superficielles." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0393/document.

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La conception des ouvrages en Génie Civil se fait habituellement de manière semi-probabiliste en employant des valeurs caractéristiques auxquelles sont associées des facteurs partiels de sécurité. Toutefois, de telles approches ne permettent pas de garantir la robustesse de l’ouvrage conçu vis-à-vis des sources d’incertitudes susceptibles d’affecter ses performances au cours de sa réalisation et de son fonctionnement. Nous proposons dans ce mémoire une méthodologie d’aide à la décision pour la conception robuste des ouvrages qui est appliquée à une structure métallique reposant sur des fondati

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14

MISHRA, SAURABH KUMAR. "AN OPTIMIZED PATH PLANNING ALGORITHM BASED ON SOFT COMPUTING." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16354.

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The existing guidance systems for panoramic areas facing various traversal problem during the path selection,whenever any path select by the Ant it is select only by seeing the lowest path cost. As we know very well that in particular panoramic spot,there are two type of roads, plane roads and other are steep roads,these steep roads some time are not suitable for children ortheageandalsoconsumehugeenergybytouristvehicle. Theexistingguidancesystemsfor panoramic areas facing various traversal problem during the path selection. Traditional path planning algorithm focus on shortest path but they d

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15

Law, J. R. "Time varying probability of failure of steel floor beams subjected to real fire." Thesis, 1997. https://vuir.vu.edu.au/18185/.

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A model for estimating the time-dependent reliability of steel beams under real fire conditions has been developed. It gives a more rational basis than time of failure modelling does for design. From risk modelling, some small resistance time from the probabilistic distribution times of failure can be deduced, which gives an acceptably small risk of failure. Time of failure modelling by itself can only give the mean time failure which could lead to excessive risk if the variability of time of failure is large. The model comprises submodels for fire severity, heat transfer, mechanical prope

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16

Nguyen, Song-Ky-Hieu, and Song-Ky-Hieu Nguyen. "Study of Steel Bridge Maintenance Strategies Using Probability Density Evolution Method and Particle Swarm Optimization." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/36485330997462563976.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>101<br>Steel bridge structures are the fundamental of transport infrastructure. In nature, steel bridge structures’ performance will decrease over time by many reasons. Bridge maintenance is essential requirement. The life extension of the bridges not only makes the large economic profit but also relieves the financial issue on asset management. Bridge maintenance is carried out to extend the life of the structure and to ensure that it functions as designed. One of challenges in bridge maintenance comes from uncertainty factors which make it difficult to get an accur

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17

Compagnone, Alberto. "Probabilistc approach for simplified verification methods of resistance of steel frames in fire." Tesi di dottorato, 2020. http://www.fedoa.unina.it/13093/1/COMPAGNONE.pdf.

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As alternative to formulation provided in Eurocode 3 for analyses on single members, this thesis shows the development of a probabilistic model to estimate critical temperature to take in account the parameters that influence the behaviour of framed steel structure in fire. A new simplified formulation has been developed to estimate the critical temperature of a steel member in the context of FSE. In other words the simplified model allows to use a general fire curve instead of the ISO standard fire also for single members, because takes into account the nonlinearities of the structure and the

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18

Nuta, Elena. "Seismic Analysis of Steel Wind Turbine Towers in the Canadian Environment." Thesis, 2010. http://hdl.handle.net/1807/24269.

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The seismic response of steel monopole wind turbine towers is investigated and their risk is assessed in the Canadian seismic environment. This topic is of concern as wind turbines are increasingly being installed in seismic areas and design codes do not clearly address this aspect of design. An implicit finite element model of a 1.65MW tower was developed and validated. Incremental dynamic analysis was carried out to evaluate its behaviour under seismic excitation, to define several damage states, and to develop a framework for determining its probability of damage. This framework was impleme

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19

(6620411), Leslie E. Campbell. "A Benchmark for Evaluating Performance in Visual Inspection of Steel Bridge Members and Strategies for Improvement." Thesis, 2019.

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<p></p><p>Visual inspection is the primary means of ensuring the safety and functionality of in-service bridges in the United States and owners spend considerable resources on such inspections. While the Federal Highway Administration (FHWA) and many state departments of transportation have guidelines related to inspector qualification, training, and certification, an inspector’s actual capability to identify defects in the field under these guidelines is unknown. This research aimed to address the knowledge gap surrounding visual inspection performance for steel bridges in order to support

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