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Dissertations / Theses on the topic 'Classification of failures'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

MATYATIM, Rosliza. "The Classification Model for Corporate Failures in Malaysia." Graduate School of International Development, Nagoya University, 2006. http://hdl.handle.net/2237/7314.

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2

Haensly, Paul J. "The Application of Statistical Classification to Business Failure Prediction." Thesis, University of North Texas, 1994. https://digital.library.unt.edu/ark:/67531/metadc278187/.

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Bankruptcy is a costly event. Holders of publicly traded securities can rely on security prices to reflect their risk. Other stakeholders have no such mechanism. Hence, methods for accurately forecasting bankruptcy would be valuable to them. A large body of literature has arisen on bankruptcy forecasting with statistical classification since Beaver (1967) and Altman (1968). Reported total error rates typically are 10%-20%, suggesting that these models reveal information which otherwise is unavailable and has value after financial data is released. This conflicts with evidence on market efficie

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3

Walia, Gursimran Singh. "Empirical Validation of Requirement Error Abstraction and Classification: A Multidisciplinary Approach." MSSTATE, 2006. http://sun.library.msstate.edu/ETD-db/theses/available/etd-05152006-151903/.

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Software quality and reliability is a primary concern for successful development organizations. Over the years, researchers have focused on monitoring and controlling quality throughout the software process by helping developers to detect as many faults as possible using different fault based techniques. This thesis analyzed the software quality problem from a different perspective by taking a step back from faults to abstract the fundamental causes of faults. The first step in this direction is developing a process of abstracting errors from faults throughout the software process. I have desc

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Blanco, Martínez Alejandro. "Study and design of classification algorithms for diagnosis and prognosis of failures in wind turbines from SCADA data." Doctoral thesis, Universitat de Vic - Universitat Central de Catalunya, 2018. http://hdl.handle.net/10803/586097.

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Actualmente las operaciones de mantenimiento preventivo de los parques eólicos se soportan sobre técnicas de Machine Learning para reducir los costes de las paradas no planificadas. Por eso se necesita una predicción de fallos con cierta anticipación que funcione sobre los datos de SCADA. Estos datos necesitan ser procesados en distintas etapas descritas en esta tesis, con resultados publicados en cada una de ellas. En una primera fase se limpian los valores extremos (Outliers), indicando cómo deben ser tratados para no eliminar la información sobre los fallos. En una segunda, las distintas va

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5

Swift, James D. "Root Cause Analysis and Classification of Single Point Failures in Designs Applying Triple Modular Redundancy in SRAM FPGAs." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8744.

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Radiation effects encountered in space or aviation environments can affect the configuration bits in Field Programmable Gate Arrays (FPGA) causing errors in FPGA output. One method of increasing FPGA reliability in radiation environments includes adding redundant logic to mask errors and allow time for repair. Despite the redundancy added with triple modular redundancy (TMR) and configuration scrubbing there exist some configuration bits that individually affect multiple TMR domains causing errors in FPGA output. A new tool called DeBit is introduced that identifies hardware resources associat

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Bender, B. R., C. E. Erdahl, and D. W. Dick. "GE PETtrace RF power failures related to poor power quality." Helmholtz-Zentrum Dresden - Rossendorf, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-166479.

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Introduction Anyone who has ever overseen the installation of a new cyclotron is aware of the importance of addressing the numerous vendor-supplied site specifications prior to its arrival. If the site is not adequately prepared, the facility may face project cost overruns, poor cyclotron performance and unintended maintenance costs. Once a facility has identified the space, providing sufficient power is the next step. Every cyclotron vendor will provide you with a set of power specifications, but meeting these specifications can be difficult, especially when the cyclotron is placed in an exis

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Murić, Goran. "Resilience of the Critical Communication Networks Against Spreading Failures." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-228883.

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A backbone network is the central part of the communication network, which provides connectivity within the various systems across large distances. Disruptions in a backbone network would cause severe consequences which could manifest in the service outage on a large scale. Depending on the size and the importance of the network, its failure could leave a substantial impact on the area it is associated with. The failures of the network services could lead to a significant disturbance of human activities. Therefore, making backbone communication networks more resilient directly affects the resi

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8

Taing, Nguonly, Thomas Springer, Nicolás Cardozo, and Alexander Schill. "A Rollback Mechanism to Recover from Software Failures in Role-based Adaptive Software Systems." ACM, 2017. https://tud.qucosa.de/id/qucosa%3A75214.

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Context-dependent applications are relatively complex due to their multiple variations caused by context activation, especially in the presence of unanticipated adaptation. Testing these systems is challenging, as it is hard to reproduce the same execution environments. Therefore, a software failure caused by bugs is no exception. This paper presents a rollback mechanism to recover from software failures as part of a role-based runtime with support for unanticipated adaptation. The mechanism performs checkpoints before each adaptation and employs specialized sensors to detect bugs resulting fr

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9

Altinel, Fatih. "An Empirical Study On Fuzzy C-means Clustering For Turkish Banking System." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615027/index.pdf.

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Banking sector is very sensitive to macroeconomic and political instabilities and they are prone to crises. Since banks are integrated with almost all of the economic agents and with other banks, these crises affect entire societies. Therefore, classification or rating of banks with respect to their credibility becomes important. In this study we examine different models for classification of banks. Choosing one of those models, fuzzy c-means clustering, banks are grouped into clusters using 48 different ratios which can be classified under capital, assets quality, liquidity, profitability, in

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10

Khawaja, Taimoor Saleem. "A Bayesian least squares support vector machines based framework for fault diagnosis and failure prognosis." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34758.

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A high-belief low-overhead Prognostics and Health Management (PHM) system is desired for online real-time monitoring of complex non-linear systems operating in a complex (possibly non-Gaussian) noise environment. This thesis presents a Bayesian Least Squares Support Vector Machine (LS-SVM) based framework for fault diagnosis and failure prognosis in nonlinear, non-Gaussian systems. The methodology assumes the availability of real-time process measurements, definition of a set of fault indicators, and the existence of empirical knowledge (or historical data) to characterize both nominal and abn

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Abudu, Bolanle. "Cluster-based classification approaches to bank failure." Thesis, University of Essex, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.559065.

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In this thesis, we present cluster-based classification methodology as a process of identifying bank failure. A central part of the thesis is an analysis of US commercial banks condition and performance pre- and post 2007 banking crisis. The structure of US commercial banks has changed radically in the forms of funding patterns, securitisation and credit risk transfer mechanisms. The change is reflected in both the results of the analysis we carried out in this thesis and in the cluster-based classification. Cluster-based classification allows us to partition a classification problem through c

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Pouech, Jérémy. "Failure Detection and Classification for Industrial Robots." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-165313.

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In industrial robotics, the detection of failures is a key part of the robotsprogram to reach a robust assembly process. However, the setting up of sucha detection is long, very specific to a robotic operation and involves programmingby engineers. In response to this problematic, the thesis presented inthis paper proposes an algorithm which makes it generic and semi-automaticthe creation of a failures detection and a classification method. Based onmachine learning, the algorithm is able to learn how to differentiate betweena success and a failure scenario given a series of examples. Moreover,

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Khan, Aabida. "Classification of HIV virological failure using whole blood versus plasma viral load." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/22775.

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Introduction: HIV viral load testing is the preferred monitoring approach for HIV infected patients on combination antiretroviral therapy (cART) as it is more sensitive than CD4 count and clinical monitoring. In resource limited settings, timely plasma separation and transportation to testing laboratories is a major barrier to the access of HIV viral load testing. The 2015 World Health Organisation guidelines recommend that cART should be initiated in all adults and children living with HIV regardless of disease stage or CD4 count, thereby escalating the demand for HIV viral load testing. Pote

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Pan, Xiang. "Deep Transfer Learning Applied to Time-series Classification for Predicting Heart Failure Worsening Using Electrocardiography." Digital WPI, 2020. https://digitalcommons.wpi.edu/etd-dissertations/615.

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Computational ECG (electrocardiogram) analysis enables accurate and faster diagnosis and early prediction of heart failure related symptoms (heart failure worsening). Machine learning, particularly deep learning, has been applied for ECG data successfully. The previous applications, however, either mainly focused on classifying occurrent, known patterns of on-going heart failure or heart failure related diseases such arrhythmia, which have undesirable predictability beforehand, or emphasizing on data from pre-processed public database data. In this dissertation, we developed an approach, howev

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Alviste, Joosep Franz Moorits. "Deployment failure analysis using machine learning." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-420321.

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Manually diagnosing recurrent faults in software systems can be an inefficient use of time for engineers. Manual diagnosis of faults is commonly performed by inspecting system logs during the failure time. The DevOps engineers in Pipedrive, a SaaS business offering a sales CRM platform, have developed a simple regular-expression-based service for automatically classifying failed deployments. However, such a solution is not scalable, and a more sophisticated solution isrequired. In this thesis, log mining was used to automatically diagnose Pipedrive's failed deployments based on the deployment

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Schwedes, Oliver. "The failure of integrated transport policy in Germany: a historical perspective." Elsevier, 2010. https://publish.fid-move.qucosa.de/id/qucosa%3A36359.

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In order to reach a sustainable traffic development, the European Union follows the central idea of an integrated transport policy. In contrast to the widely accepted concept, the EU recently had to admit that in fact transport development goes in the opposite direction. This contradiction has to be explained. The article describes the long lasting succession of efforts to implement a far-reaching cooperation in the transport sector as is aspired to by an integrated transport policy. In each case, though, the political idea of cooperation was superseded by the economic one of competition. Ther

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Wilhelm, Maximilian Felix, Uwe Füssel, Thomas Richter, Matthias Riemer, and Martin Foerster. "Analysis of the shear-out failure mode for CFRP connections joined by forming." Sage, 2015. https://tud.qucosa.de/id/qucosa%3A35782.

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In this paper, we look at the shear-out failure of carbon fiber reinforced plastics connections in the automotive industry. Contrary to the aircraft industry, the boundary conditions of automotive applications favor this failure mode strongly. Moreover, the use of other joining technologies than that used in the aircraft industry, such as joining by forming, leads to new challenges. The different influences, typical for joining by forming, on ultimate shear-out strength were first investigated separately and then transferred and validated on connections related to praxis by an analytical model

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Ranasooriya, Jayantha. "The reliability of rock mass classification systems as underground excavation support design tools." Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/846.

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This thesis examines the reliability of rock mass classification systems available for underground excavation support design. These methods are sometimes preferred to rational methods of support design particularly if detailed information required for the latter mentioned methods is lacking. The classification approach requires no analysis of any specific failure mechanisms or the forces required to stabilise unstable rocks, yet, the support measures thus designed are considered to deal with all possible failure mechanisms in a rock mass.Amongst the several rock mass classification methods dev

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Patel, Jiten. "Enhanced classification approach with semi-supervised learning for reliability-based system design." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44872.

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Traditionally design engineers have used the Factor of Safety method for ensuring that designs do not fail in the field. Access to advanced computational tools and resources have made this process obsolete and new methods to introduce higher levels of reliability in an engineering systems are currently being investigated. However, even though high computational resources are available the computational resources required by reliability analysis procedures leave much to be desired. Furthermore, the regression based surrogate modeling techniques fail when there is discontinuity in the design spa

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Nilsson, Gunnar. "Classification and reuse of clinical information in general practice : studies on diagnostic and pharmacological information in electronic patient record systems /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-306-6/.

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Bin, Hasan M. M. A. "Current based condition monitoring of electromechanical systems : model-free drive system current monitoring : faults detection and diagnosis through statistical features extraction and support vector machines classification." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5732.

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A non-invasive, on-line method for detection of mechanical (rotor, bearings eccentricity) and stator winding faults in a 3-phase induction motors from observation of motor line current supply input. The main aim is to avoid the consequence of unexpected failure of critical equipment which results in extended process shutdown, costly machinery repair, and health and safety problems. This thesis looks into the possibility of utilizing machine learning techniques in the field of condition monitoring of electromechanical systems. Induction motors are chosen as an example for such application. Elec

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Marx, Steffen, Gregor Schacht, Hans-Gerd Maas, Frank Liebold, and Guido Bolle. "Versuchsgrenzlastindikatoren bei Belastungsversuchen II: Forschungsinitiative Zukunft Bau." Technische Universität Dresden, 2013. https://tud.qucosa.de/id/qucosa%3A27350.

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Ziel des Folgeantrages war die Entwicklung der photogrammetrischen Messtechnik zur onlinefähigen Anwendung bei In-situ-Belastungsversuchen. Dies wurde mit den in Kapitel 3 beschriebenen Ansätzen erfolgreich umgesetzt. Die gewählte künstliche Texturierung der Bauteiloberflächen stellte sich als sehr geeignet heraus, um bereits kleinste Strukturveränderungen beobachten und visualisieren zu können. Durch die Verwendung einer Industriekamera konnte die onlinefähige Bildanalyse und simultane Darstellung der Ergebnisse auf dem Bildschirm umgesetzt werden. Durch die Verwendung von Dreiecken und der E

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Schwarzer, Norbert, and Peggy Heuer-Schwarzer. "Failure analysis on laminate structures of windsurfing boards using thin film modelling techniques." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600125.

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Within this paper recently developed mathematical tools for the modelling of contact problems on thin film structures [1] for multilayers and gradient coatings are adapted to allow the investigation of laminate structures of transversal isotropy. Applying series approaches using Bessel and Sinus functions complete three dimensional solutions can be found for relatively complex laminate structures allowing to model quasistatic contact, impact and bending loads. Worked into a small computer program the approach can be used to model laminate structures with up to 100 different layers on an ordina

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Moorhead, Katherine Tracey. "Design and Implementation of Analytical Mathematics for SIFT-MS Medical Applications." Thesis, University of Canterbury. Mechanical Engineering, 2009. http://hdl.handle.net/10092/2898.

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Selected Ion Flow Tube-Mass spectrometry (SIFT-MS) is an analytical measurement technology for the real-time quantification of volatile organic compounds in gaseous samples. This technology has current and potential applications in a wide variety of industries, although the focus of this research is in medical science. In this field, SIFT-MS has potential as a diagnostic device, capable of determining the presence of a particular disease or condition. In addition, SIFT-MS can be used to monitor the progression of a disease state, or predict deviations from expected behaviour. Lastly, SIFT-MS

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Baus, Ivan, Robert Rahmfeld, Andreas Schumacher, and Henrik C. Pedersen. "Lifetime impact prediction of component modifications in axial piston units by the failure likelihood assessment." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71266.

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In this paper, a new methodology is presented to estimate the lifetime impact of design changes, called Failure Likelihood Assessment (FLA). The discussion in this paper is on the fatigue lifetime prediction of axial piston units, especially after a design change. The demonstration object is an axial piston pump due to extreme environmental conditions and high specification demands, where the FLA is applied to a manufacturing change in an existing product and delivers an effect on the unit reliability. The resulted reliability imp rovement, if combined with typical calculation methods like Wei

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Helmberg, Christoph, Sebastian Richter, and Dominic Schupke. "A Chance Constraint Model for Multi-Failure Resilience in Communication Networks." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-175454.

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For ensuring network survivability in case of single component failures many routing protocols provide a primary and a back up routing path for each origin destination pair. We address the problem of selecting these paths such that in the event of multiple failures, occuring with given probabilities, the total loss in routable demand due to both paths being intersected is small with high probability. We present a chance constraint model and solution approaches based on an explicit integer programming formulation, a robust formulation and a cutting plane approach that yield reasonably good solu

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Sammouri, Wissam. "Data mining of temporal sequences for the prediction of infrequent failure events : application on floating train data for predictive maintenance." Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1041/document.

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De nos jours, afin de répondre aux exigences économiques et sociales, les systèmes de transport ferroviaire ont la nécessité d'être exploités avec un haut niveau de sécurité et de fiabilité. On constate notamment un besoin croissant en termes d'outils de surveillance et d'aide à la maintenance de manière à anticiper les défaillances des composants du matériel roulant ferroviaire. Pour mettre au point de tels outils, les trains commerciaux sont équipés de capteurs intelligents envoyant des informations en temps réel sur l'état de divers sous-systèmes. Ces informations se présentent sous la form

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Arif-Uz-Zaman, Kazi. "Failure and maintenance information extraction methodology using multiple databases from industry: A new data fusion approach." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/116354/1/Kazi_Arif-Uz-Zaman_Thesis.pdf.

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This study develops a new method to identify a vital input, i.e. failure times of an asset, to reliability models from multiple but commonly-available industrial maintenance databases. A text mining approach is employed to extract useful features from unstructured free texts of different maintenance work records. The proposed method is further developed using Active Learning algorithms to improve the robustness of the results. The outcomes of this study can be used to develop advanced and applicable reliability models from historical maintenance databases, which were not effectively utilised b

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Schwarzer, Norbert, and Peggy Heuer-Schwarzer. "Qualitative failure analysis on laminate structures of windsurfing boards using analytical linear elastic modelling." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600107.

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Recently developed mathematical tools for the modelling of contact problems on thin film structures are adapted to allow the investigation of arbitrarily mixed purely isotropic and transversally isotropic laminate structures. The new tool is applied to model a variety of load problems resulting in the failure of windsurfing boards consisting of a relatively thin laminate shell and a soft polymer foam core. It is shown that local impact and distributed bending loads due to “bad landing” after high jumps or contact with parts of the sailing gear (the so called rig) especially the front part of t

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Seidlitz, Holger, Lars Ulke-Winter, Colin Gerstenberger, and Lothar Kroll. "Dimensioning of Punctiform Metal-Composite Joints: A Section-Force Related Failure Criterion." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-152889.

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Reliable line production processes and simulation tools play a central role for the structural integration of thermoplastic composites in advanced lightweight constructions. Provided that material- adapted joining technologies are available, they can be applied in heavy-duty multi-material designs (MMD). A load-adapted approach was implemented into the new fully automatic and faulttolerant thermo mechanical flow drill joining (FDJ) concept. With this method it is possible to manufacture reproducible high strength FRP/metal-joints within short cycle times and without use of extra joining elemen

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Thomas, Katja, Hagen Schrötter, Michael Halank, and Tjalf Ziemssen. "Fingolimod in a patient with heart failure on the background of pulmonary arterial hypertension and coronary artery disease." BioMed Central, 2014. https://tud.qucosa.de/id/qucosa%3A28701.

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Background: Fingolimod is the first oral immunomodulatory therapy approved for highly active relapsing remitting multiple sclerosis. Based on the distribution pattern of fingolimod interacting sphingosine-1-phosphat receptors in organism including immune system and cardiovascular system clinical monitoring of patients and evaluation of adverse events are recommended. Despite extensive data on cardiovascular safety, experience with fingolimod in patients with concomitant cardiological disease, especially within the pulmonary circulation, is rare. Case presentation: We report the case of a 46-y

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Yan, Charlotte. "Vaildation of nonlinear FE-simulation for design improvement." Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-114592.

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The aim of the project is to develop a model, which is going to be used for mass reduction of a standard profile of aluminium seat rails in Aircraft structure. Using nonlinear analysis including plasticity and material failure laws the effect of changes in geometry vs. ultimate load is analysed (ABAQUS 6.11). First, the non-linear model used is validated with experimental testing: Boundary conditions and material properties are adjusted based on load displacement curves, strain gauges information and failure patterns. Less than 1% deviation is achieved between simulation and testing. An inclus

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Riwe, Axel. "Methoden zur Berechnung der Versagenswahrscheinlichkeit von Straßenplatten aus Beton." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-181415.

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Die Dimensionierung einer Betonfahrbahn zielt darauf ab, den Anteil der im Nutzungszeitraum versagenden Platten auf ein akzeptables Maß zu begrenzen. Der Anteil ausgefallener Platten entspricht der Versagenswahrscheinlichkeit der einzelnen Platte. Damit ergibt sich die Notwendigkeit, die Versagenswahrscheinlichkeit zu berechnen. Innerhalb der vorliegenden Arbeit werden grundlegende Methoden und Verfahrensweisen zur Lösung dieser Aufgabe entwickelt. Es wird gezeigt, wie die für die Quantifizierung der Versagenswahrscheinlichkeit entscheidenden Streuungen der Einflussgrößen mathematisch beschrie

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Ghiasvand, Siavash. "Toward Resilience in High Performance Computing:: A Prototype to Analyze and Predict System Behavior." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A72457.

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Following the growth of high performance computing systems (HPC) in size and complexity, and the advent of faster and more complex Exascale systems, failures became the norm rather than the exception. Hence, the protection mechanisms need to be improved. The most de facto mechanisms such as checkpoint/restart or redundancy may also fail to support the continuous operation of future HPC systems in the presence of failures. Failure prediction is a new protection approach that is beneficial for HPC systems with a short mean time between failure. The failure prediction mechanism extends the existi

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Boué, Anaïs. "Data mining and volcanic eruption forcasting." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAU007/document.

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L'intégration de méthodes de prédiction des éruptions volcaniques dans une stratégie de surveillance globale peut être un outil d'aide à la décision précieux pour la gestion des crises, si les limites des méthodes utilisées sont connues. La plupart des tentatives de prédictions déterministes des éruptions volcaniques et des glissements de terrain sont effectuées avec la méthode FFM (material Failure Forecast Method). Cette méthode consiste à ajuster une loi de puissance empirique aux précurseurs de sismicité ou de déformation des éruptions. Jusqu'à présent, la plupart des travaux de recherche

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Schleifenbaum, Stefan, Michael Schmidt, Robert Möbius, et al. "Load and failure behavior of human muscle samples in the context of proximal femur replacement." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-204698.

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Background: To ensure adequate function after orthopedic tumor reconstruction, it is important to reattach the remaining soft tissue to the implant. This study aimed at obtaining mechanical properties of textile muscle-implant and muscle-bone connections in a preliminary test. Methods: Two groups of soft-tissue attachment were mechanically tested and compared: Native bone-muscle samples obtained from human femora and muscles attached to a prosthetic implant by means of Trevira® attachment tubes. Additionally, muscle samples were tested with muscle fibers aligned parallel and perpendicular to

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Amro, Raed. "Power cycling capability of advanced packaging and interconnection technologies at high temperature swings." Doctoral thesis, [S.l. : s.n.], 2006. https://monarch.qucosa.de/id/qucosa%3A18552.

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Hartman, Matěj. "Funkční analýza rizik (FHA) malého letounu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230779.

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The object of this diploma thesis is to perform Functional Hazard Assessment of small four-seat aircraft according to Federal Aviation Regulations Part 23, which would be similar to present aircrafts on market. Input data were acquired by research of systems aircrafts use on current market. On this basis the Functional Hazard Assessment was performed ad aircraft level. Total loss of power supply was qualified as Catastrophic therefore is used in following assessment. A preliminary failure rate assessment of typical parts used in electrical system was performed at the end of diploma thesis. For

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Düsing, Christa, and David Prust. "Supplementary failure mode and effect analysis (FMEA) for safety application standards DIN EN ISO 13849 safety function-fmea." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71272.

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In the automotive industry, the Safety Function-FMEA according to ISO 26262 and its application to functional safety relevant systems is a well-established process in the form of Automotive Safety Integrity Levels (ASILs). These represent the failure mitigation that must be applied to ensure an acceptable residual risk of malfunctioning behaviour. The DIN EN ISO 13849 (ISO 13849) already describes a process to reduce risks for machines which starts with a Hazard And Risk Analysis (HARA) as described in DIN EN ISO 12100 and concludes with the Safety Requirements Specification (SRS). The SRS is

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Peled, Alva. "Cement Penetrability Characteristics in Textile Cement Systems." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244044138771-75495.

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Cement penetrability is a key factor in multifilament cement composites. However, the modes of action and the concepts vary because of brittle and ductile fibers. In the case of brittle fibers such as glass, high penetrability of cement products in between the bundle filaments can lead to brittle composite behavior, and therefore addition in ductility is required. In order to have efficient bundle action and high bonding, fillers can be introduced in between the glass filaments, keeping the telescopic mode of failure but at the same time improving the bond and stress transfer within the filame

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Hübner, P., U. Mahn, and J. Arndt. "Bruch der Königswelle einer 6300 T–Presse." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-226082.

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Die bruchmechanische Analyse des Bruches einer Königswelle zeigt, dass der Ermüdungsriss von einer Fehlstelle ausging und durch die Betriebsbeanspruchung gewachsen ist. Die errechneten Lebensdauerwerte decken sich mit den tatsächlich erreichten<br>The fracture mechanics analysis of the rupture of an upright shaft shows that the fatigue crack originated from a defect was able to grow with the operational stress. The calculated and actual lifetime are the same

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Csetnek, Ernö Robert. "Overcoming the failure of the classical generalized interior-point regularity conditions in convex optimization. Applications of the duality theory to enlargements of maximal monotone operators." Doctoral thesis, Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200902025.

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The aim of this work is to present several new results concerning duality in scalar convex optimization, the formulation of sequential optimality conditions and some applications of the duality to the theory of maximal monotone operators. After recalling some properties of the classical generalized interiority notions which exist in the literature, we give some properties of the quasi interior and quasi-relative interior, respectively. By means of these notions we introduce several generalized interior-point regularity conditions which guarantee Fenchel duality. By using an approach due to Ma

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Azzolin, Karina de Oliveira. "Efetividade da implementação das intervenções de enfermagem nos resultados esperados de pacientes com insuficiência cardíaca em cuidado domiciliar." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/34808.

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A estabilidade clínica de pacientes com insuficiência cardíaca (IC) ainda é um desafio para equipe de saúde, pois as elevadas taxas de descompensação da doença são frequentes e, assim, requerem maiores investimentos no avanço de protocolos de cuidados. Na área da enfermagem, verifica-se que intervenções específicas ainda não foram adequadamente estudadas, principalmente dentro de um referencial teórico próprio, como as classificações NANDA-I-NIC-NOC. O objetivo deste estudo é avaliar a efetividade da implementação de intervenções e atividades, por meio dos resultados, a pacientes com insuficiê

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Marx, Steffen, Gregor Schacht, Hans-Gerd Maas, Robert Koschitzki, and Guido Bolle. "Versuchsgrenzlastindikatoren bei Belastungsversuchen." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-76111.

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Die Zielstellung des Forschungsvorhabens ist die Entwicklung und Erprobung von speziellen Indikatoren, welche im Zuge einer Probebelastung für die sichere Beurteilung der Tragfähigkeit von Massivbaukonstruktionen mit geringem Ankündigungsverhalten geeignet sind. Der Begriff "Ankündigung“ bezieht sich dabei auf die beim Belastungsversuch wichtige Bestimmung der Versuchsgrenzlast, deren Überschreiten zu inakzeptablen Schädigungen führt und daher mit ausreichender Sicherheit ausgeschlossen werden muss. Durch den Einsatz und vor allem die Kombination moderner Messverfahren kann eine wesentliche V

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Anders, Enrico. "Ein Beitrag zur ganzheitlichen Sicherheitsbetrachtung des Bahnsystems." Doctoral thesis, Technische Universität Dresden, 2008. https://tud.qucosa.de/id/qucosa%3A23714.

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Im Rahmen der Arbeit wird der Begriff Sicherheit aus verschiedenen Blickwinkeln beleuchtet, Randbedingungen aus Theorie und Praxis zielorientiert strukturiert und ein Vorschlag für eine Integration betrieblicher Aspekte in Sicherheitsanalysen dargelegt. Dazu werden zunächst die normativ verankerten Lebenszyklusphasen des Bahnsystems und die darin festgelegten Verantwortlichkeiten vorgestellt. Darauf aufbauend erfolgt die beispielhafte Beschreibung einer neuen Analysemethode in Verfügbarkeits-Sicherheits-Diagrammen für betriebliche Szenarien des Bahnsystems. Die Arbeit endet mit der Vorstellung

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Lemos, Dayanna Machado Pires. "Implementação das taxonomias NANDA-I, NOC e NIC no planejamento da alta hospitalar para pacientes com insuficiência cardiaca e diabetes mellitus." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/183914.

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O planejamento de alta é uma etapa importante do preparo do paciente para os cuidados em domicílio. O enfermeiro tem papel fundamental neste processo, atuando na identificação dos problemas de saúde e na educação de pacientes e familiares. As orientações para alta fazem parte do Processo de Enfermagem, embora não sejam priorizadas dentre as atividades de responsabilidade do enfermeiro. A falta de um planejamento efetivo de alta hospitalar pode ser um dos fatores que contribui para elevar as taxas de reinternações hospitalares em indivíduos com Insuficiência cardíaca (IC) ou Diabetes mellitus (

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Andreev, Maxim, Artem Kolesnikov, Uwe Grätz, and Julia Gundermann. "Simulation-based system reliability analysis of electrohydraulic actuator with dual modular redundancy." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71268.

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This paper describes the failure detection system of an electro-hydraulic actuator with dual modular redundancy based on a hybrid twin TM concept. Hybrid twin TM is a combination of virtual twin that operates in parallel with the actuator and represents its ideal behaviour, and a digital twin that identifies possible failures using the sensor readings residuals. Simulation-based system reliability analysis helps to generate a dataset for training the digital twin using machine learning algorithms. A systematic failure detection approach based on decision trees and the process of analysing the

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Loua, Seydou. "Efficacité interne de l’enseignement supérieur malien." Thesis, Lyon 2, 2012. http://www.theses.fr/2012LYO20103/document.

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L’enseignement supérieur malien et notamment l’Université de Bamako est confrontée à d’énormes difficultés depuis plusieurs années. Qu’est ce qui explique ces difficultés et comment faire pour rendre plus efficace cet enseignement supérieur afin de rehausser les niveaux et le rendre compétitif sur le plan sous régional et international ? Cette question nous a conduit à nous intéresser à l’étude de son efficacité interne. Le présent travail est une contribution à la recherche de facteurs de ces difficultés et d’alternatives pour y remédier. Il tente de dégager des pistes de réflexion sur l’amél

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Wiese, Hans. "Dokumentation von Versuchen zur mitwirkenden Plattenbreite an Plattenbalken." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1184152680776-24529.

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Als Ergänzung für die Lehrbriefe des Instituts für Massivbau der TU Dresden zu den Grundlagen des Stahlbetons (Teil 1 und 3 sowie Übungen Teil 1 bis 3) werden hier Bilder von Versuchsreihen vorgestellt, die am Lehrstuhl für Stahlbeton, Spannbeton und Massivbrücken der TH/TU Dresden, aus dem das heutige Institut für Massivbau hervorging, innerhalb verschiedener Forschungsarbeiten von 1956 bis 1965 entstanden. Neben dem Einblick in die damaligen Arbeitsweisen und Möglichkeiten sind vor allem die zahlreichen Bruchbilder geeignet, sich in das Tragverhalten des Stahlbetons hineinzudenken. Diese Übe

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Pfluecke, C., M. Christoph, S. Kolschmann, et al. "Intra-aortic balloon pump (IABP) counterpulsation improves cerebral perfusion in patients with decreased left ventricular function." Sage, 2014. https://tud.qucosa.de/id/qucosa%3A35364.

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Background: The current goal of treatment after acute ischemic stroke is the increase of cerebral blood flow (CBF) in ischemic brain tissue. Intra-aortic balloon pump (IABP) counterpulsation in the setting of cardiogenic shock is able to reduce left ventricular afterload and increase coronary blood flow. The effects of an IABP on CBF have not been sufficiently examined. We hypothesize that the use of an IABP especially enhances cerebral blood flow in patients with pre-existing heart failure. Methods: In this pilot study, 36 subjects were examined to investigate the effect of an IABP on middle

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