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Williams, Michael Todd. "Heart Failure Readmission Strategy via Heart Failure Script". ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/4189.
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Hospital administrators strive to reduce readmission and over use of the acute care setting for chronic health conditions. Historically hospitals have focused on readmission prevention strategies to improve the transition of patients from the hospital to the community and although the causes of a hospital readmission may span multiple providers along the continuum of care, the hospital is currently the only provider being penalized. The project facility implemented a readmission reduction strategy, Re-Engineered Discharge (Project RED), as a means to reduce readmissions and yet continued to have high readmission rates for heart failure (HF) patients. The continued high rate of readmissions led to the practice focused question, which examined the process of developing a discharge phone call script specific for HF patients as a way to reduce readmissions for HF patients. Kristin Swanson's structure of caring model provided the nursing framework for this project with a purpose to plan a telephone call follow up program for HF patients after hospital discharge. The project planning was accomplished in conjunction with the facility's readmission reduction team/LEAN team, resulting in a script about the most prevalent issues among HF patients. Kotter's 8 step change model will be used as a guide for the implementation of the telephone call follow up program at a later date. Readmission rates for HF patients will be monitored monthly as an outcome evaluation measure. Project team members provided evaluation of the project which demonstrated satisfaction and success of the planning process. The results of this project will bring about social change by providing access to healthcare providers regardless the socioeconomic status of the patient and by decreasing the use of acute care setting unnecessarily for chronic conditions.
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Haapala, S. (Sami). "Why an entrepreneur needs three failures before success:entrepreneurial learning after failure". Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201605121714.
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This thesis aims to give an understanding of what is behind a failure in a startup industry. To understand why failures are needed for a success, the serial entrepreneur process has to be clarified at an individual level. In the failure process, under analysis are the main phases of turning a failure into a success and the outcomes which should be used as the next venture foundations. This study also aims to give basic tools for entrepreneurships on how to proceed after a failure at a personal level so that the entrepreneurs would be able start a new venture having a positive experience from the last failure.
The study begins with a literature review in which concepts of entrepreneurial learning and theoretical failure process model are presented. This created model is then tested in the empirical part. The method used in this study is done as an abductive approach using exploratory research design with a cross-sectional study method to collect and analyze qualitative data. The data in the empirical part has been collected with face-to-face and telephone interviews with professional serial entrepreneurs.
The theoretical failure process model created in the literature review part was successfully tested in the empirical part. This process model could be used as the first step in any failure analyses as a tool for an entrepreneur or a manager. Going forward is much easier after analyzing the true reasons behind a failure. Finding root causes for a failure has provided learnings which are key tools for the future.
The scientific results of this study show that every entrepreneur that was interviewed has had multiple setbacks as failures during their career. However, they have managed to separate their professional and private lives so that if and when a failure has happened, financial, social and physical costs have been less significant. When these negative costs have been minimal ones, the entrepreneurs have had no or only minor grief before being able to analyze true reasons behind a failure and gaining learnings for the next venture. Learning from past failures, they have been able to avoid similar mistakes happening again. Furthermore, low grief has allowed for the recovery time from failures to reduce significantly.
The main managerial finding was that internal motivation is one of the root causes behind the entrepreneur having strength and motivation to continue despite failures. The internal motivation for their actions follows every step from starting a venture to failure analyses, all the way to learning and continuing to the next venture. In some cases, when that motivation was lost, even partly, entrepreneurs were noted to exit from that venture.
The purpose of this study was to give understanding of why a failure should be accepted as a natural and sometimes needed, but not wanted, step for learning in a long perspective. The purpose was not to give detailed tools for every reasons behind failure, but this work will rather provide basic tools on how to proceed if a failure happens. If the failure acceptance was wider, the outcome would be beneficial on three different levels. To understand the reasons behind needing failures for success, we need to focus on the entrepreneur’s failure process at an individual level. After understanding that, the process can be scaled up to company and further to community levels.
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Shen, Li. "Sudden death and pump failure death in heart failure". Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/8651/.
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Sudden death and pump failure death are two major modes of death in patients with heart failure and reduced ejection fraction (HF-REF) and in patients with heart failure and preserved ejection fraction (HF-PEF). There have been advances in evidence-based treatments in patients with HF-REF over the last two decades, along with the changing patient characteristics in both HF-REF and HF-PEF populations. It is of great interest and significance to discover if these changes have translated into temporal changes (and corresponding trends over time) in the risks of sudden death and pump failure death in both populations. Apart from examining any changes in the rates of mode-specific death in population level, it is also of interest and importance to estimate the risks for sudden death and pump failure death in individual patients. Accurate risk prediction can aid in better risk stratification. In patients with HF-REF, identifying high-risk subgroups would help target the device therapy to those most likely to benefit and identifying low-risk subgroups would avoid unnecessary implantation, thus improving the cost-effectiveness of the therapy. In patients with HF-PEF, identifying high-risk subgroups would enable further research into the efficacy of device therapy in this population. The aims of this work were to examine the trends in the rates of sudden death and pump failure death over time in patients with HF-REF and in patients with HF-PEF, and to separately develop validated models to predict sudden death and pump failure death in both populations. Given that there are limited data on mode-specific death from community-based studies, I used data from clinical trials which have more detailed and standardised sub-classification and adjudication of mortal events. Besides, compared to community-based studies, clinical trials have more detailed baseline characterisation, which allows more complete multivariable adjustment to account for confounding and between-study differences. Therefore, a cohort of 46,163 patients with HF-REF enrolled in 13 clinical trials conducted between 1995-2015 and a cohort of 10,517 patients with HF-PEF in 3 clinical trials over the period 1999-2013 were included in this thesis. Multiple linear regression analysis was used to examine the trends in the rates of sudden death and pump failure death over time in both populations respectively. The cumulative incidences for sudden death and pump failure death in each trial at different time points during follow-up were calculated with the cumulative incidence function method, counting the competing risk of death from other causes. The risk for each mode of death across trial arms and by HF duration was examined using the Cox regression models, with further adjustment for a number of confounding variables. The models to predict sudden death and pump failure death in patients with HF-REF were separately developed in PARADIGM-HF and validated in ATMOSPHERE. Models for both modes of death in HF-PEF were developed in I-PRESERVE and validated in CHARM-Preserved as well as TOPCAT. These models were constructed using a competing risk approach with the Fine-Gray sub-distributional hazards regression analysis. Model performance was examined by assessing calibration (i.e. the agreement between the observed and predicted cumulative incidences over time) and discrimination (i.e. the ability to separate patients at higher risk from those at lower risk). I found that the risks of sudden death and pump failure death in patients with HF-REF have fallen across 13 clinical trials over the period 1995-2015, consistent with a cumulative use of evidence-based therapies in this population. The absolute rates of sudden death and pump failure death were very low in the early follow-up after randomisation in patients with HF-REF who received modern evidence-based treatment. Longer standing HF was associated with greater risks of sudden death and, particularly, pump failure death in HF-REF. The risks of sudden death and pump failure death were consistently low across the 3 largest clinical trials in patients with HF-PEF, with little difference by experimental treatment in any trial. There was a downward trend in the rates of sudden death and pump failure death across these trials over time, in parallel with a changing characteristic of patients enrolled in these trials. Nevertheless, sudden death and pump failure death remained the most common modes of death, altogether accounting for the majority of CV death. The absolute rates of sudden death and pump failure death in patients with HF-PEF were extremely low in the early follow-up after randomisation. Longer standing HF was associated with a slightly higher risk of sudden death and a substantially higher risk of pump failure death in HF-PEF. The sudden death and pump failure death models in patients with HF-REF I developed in the largest and most contemporary cohort (PARADIGM-HF), included a number of variables collected in routine clinical practice, and accounted for the prognostic impact of the competing risk of death from other causes. The discriminating ability was modest for the sudden death model but excellent for the pump failure death model. Both models showed good calibration and were robust when externally validated in ATMOSPHERE. The prognostic models in patients with HF-PEF I developed in I-PRESERVE, using simple demographic and clinical variables, showed good discrimination and calibration for both sudden death and pump failure death, and were robust in external validation in CHARM-Preserved and TOPCAT. The performance of both models was further improved with the inclusion of NT-proBNP. In conclusion, I have found that the risks of sudden death and pump failure death have declined over time both in patients with HF-REF and in patients with HF-PEF based on clinical trial data. The patterns of change in the rates of both modes of death over time need to be examined in community-based populations. The prognostic models for both modes of death, showing reasonable performance, can be considered for use in risk stratification for mode-specific death in both populations, aiding in decision making in device therapy in similar patients in HF-REF and helping with patient selection for device interventions in future trials in HF-PEF.
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Pinho, Silvestre Taveira. "Modelling failure of laminated composites using physically-based failure models". Thesis, Imperial College London, 2005. http://hdl.handle.net/10044/1/8149.
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Nie, Xin. "Failure mechanism of rolling shear failure in cross-laminated timber". Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55299.
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Wood as building material is gaining more and more attention in the 21st century due to its positive attributes such as light weight, renewability, low carbon footprint and fast construction period. Cross-laminated timber (CLT), as one of the new engineered wood products, requires more research emphasis since its mechanical performance can allow CLT to be utilized in massive timber structures. This thesis focuses on revealing one of the key failure mechanisms of CLT, which is usually referred to as the rolling shear failure. The scientific research conducted in this thesis combined both analytical modelling and experimental material testing. The stresses in CLT cross-layers obtained from a finite-element model were analyzed to differentiate various failure modes possible. Tension perpendicular to grain stress was found to cause cross-layer failure in combined with the rolling shear stress. Experimentally, specimens prepared from 5-layer CLT panels were tested under center-point bending condition. Detailed failure mechanism of CLT cross-layers were recorded with high speed camera to capture the instant when initial failure happened. It is evident that some of the specimens failed in tension perpendicular to grain which verified the modelling results. Variables such as the rate of loading and the manufacturing clamping pressure were designed in experiments to compare their influence to the failure of CLT specimens. In this research, the failure of CLT cross-layer was updated to a combined consequence of both rolling shear stress and tension perpendicular to grain stress. Future research topics and product improvement potentials were given by the end of this thesis.Forestry, Faculty of
Graduate
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Björklund, Oscar. "Modelling of failure". Thesis, Linköping University, Department of Management and Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11466.
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This report is a review of some failure models today used for determine failure in thin sheets of high strength steels. Focus has been given on phenomenlogical models and only some simple simulations have been carried out. The phenomenlogical models that have been summarized here are of four different categories, namely stress based, strain based, combined stress and strain based and damaged models. However, the simulations have only been preformed for some of the models.
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Hellström, Erica, i Karolina Soppela. "GEOMETRICAL QUALITY FAILURE". Thesis, KTH, Industriell produktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127959.
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The objective of this master thesis was to investigate if there is a relationship between geometrical quality failure cost and geometrical deviation from the designed target value. To achieve this objective this master thesis has defined what is referred to as geometrical quality failure and geometrical quality failure cost. Furthermore, to make it applicable for organizations this master thesis also has investigated how a potential relationship could be used. This master thesis was performed as a case study at the Swedish car manufacturer Volvo Cars Corporation, VCC. The case study included both a qualitative and a quantitative part. There were three main quantitative parts: questionnaires, a cost analysis and a geometrical analysis. The questionnaires were sent to recipients both within the VCC organization, also to external organizations and experts within the field of geometry assurance and geometrical quality. The responses from the questionnaires were used to define geometrical quality failure and geometrical quality failure cost. The cost analysis and the geometrical analysis were done with four samples, and investigated if there was a relationship between the defined geometrical quality failure costs and deviation from the designed target value. The qualitative part of the case study was used to find costs that were related to geometry within the VCC organization, and also to investigate how a possible relationship could be used in organizations. For the qualitative part, interviews were conducted both with individuals from VCC and external organizations. This master thesis showed that there was a relationship between the defined geometrical quality failure cost and geometrical deviation from the designed target for the investigated samples. It also argued that the relationship could be used as a communication tool within organizations. The relationship could also be used in negotiations to communicate that a more robust design, a supplier that delivers robust components, or a better assembly system could be cheaper from a long-term perspective. Furthermore, the relationship could also be used to communicate the importance of working with develop more robust designs. Keywords – Geometrical quality failure, Geometrical quality failure cost, Quality, Geometrical variation, Cost, Taguchi, and Quality loss function.Syftet med detta examensarbete var att undersöka om det finns ett samband mellan geometrisk kvalitetsbristkostnad och geometrisk avvikelse från det designade målvärdet. För att uppnå syftet har detta examensarbete definierat vad som kallas geometrisk kvalitetsbrist och geometrisk kvalitetsbristkostnad. Dessutom, för att göra relationen applicerbar för organisationer har detta examensarbete också undersökt hur den potentiella relationen skulle kunna användas. Examensarbetet utfördes som en fallstudie hos den svenska biltillverkaren Volvo Personvagnar AB, även benämnda som VCC i examensarbetet. I fallstudien ingick både en kvalitativ och en kvantitativ del. Det fanns tre huvudsakliga kvantitativa delar, vilka var; frågeformulär, en kostnadsanalys och en geometrisk analys. Frågeformulären skickades ut till mottagare både inom VCC och även till externa organisationer och experter inom områdena geometrisäkring och geometrisk kvalitet. Svaren från enkäterna användes för att definiera geometrisk kvalitetsbrist och geometrisk kvalitetsbristkostnad. Kostnadsanalysen och den geometriska analysen utfördes på fyra fall hämtade från VCC, och undersökte om det fanns ett samband mellan den definierade geometriska kvalitetsbristkostnaden och avvikelser från det designade målvärdet. Den kvalitativa delen av fallstudien användes för att hitta kostnader som var relaterade till geometriska defekter inom VCC samt även för att undersöka hur ett eventuellt samband kan användas i organisationer. För den kvalitativa delen har intervjuer genomförts både med personer inom VCC och externa organisationer. Detta examensarbete visade att det fanns ett samband mellan den definierade geometriska kvalitetsbristkostnaden och geometrisk avvikelse från det designade målvärdet för de undersökta fallen. Det hävdades även att detta samband skulle kunna användas som ett kommunikationsmedel inom organisationer. Sambandet kan även användas i förhandlingar för att kommunicera att en mer robust konstruktion, leverantör som levererar robusta komponenter, eller bättre monteringssystem kan vara billigare ur ett långsiktigt perspektiv. Vidare kan sambandet även användas för att kommunicera vikten av att arbeta med att utveckla mer robusta konstruktioner. Nyckelord – Geometrisk kvalitetsbrist, Geometrisk kvalitetsbristkostnad, Kvalitet, Geometrisk variation, Kostnad, Taguchi, och Quality Loss Function.
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Maher, Felicity. "Failure of basis". Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491231.
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McAlindon, Timothy Edward. "Knee joint failure". Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386627.
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Singh, Pushpinder 1972-2006. "Failure-directed reformulation". Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/46197.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and, Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.Includes bibliographical references (leaf 58).
by Pushpinder Singh.
B.S.
M.Eng.
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Wilmot-Smith, Frederick J. "Failure of condition". Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:93ab182a-be71-489a-88e8-1479d9b8efb3.
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This thesis is an investigation of a doctrine generally known as ‘failure of consideration’, but which I term ‘failure of condition’. I have two principal aims. First, to clarify quite what the doctrine of failure of condition is. Secondly, to explain why it has the effects it does – in particular, why it justifies the response of restitution. The doctrine, at core, concerns conditional transfers: when a transfer is made conditionally, and the condition fails, the transfer can be recovered. For this reason, I term the doctrine ‘failure of condition.’ I investigate the nature of this relationship and argue that the reason why the transfer is conditional is that the agent’s intention to make the transfer was itself conditional. The justification of restitution is a more complex affair than is customarily accepted – but there is a valid justification lurking not far from the surface of orthodoxy. A secondary concern of the thesis is to re-examine an old theory in the field of common mistake, frustration and termination following a breach of contract. It used to be thought that these doctrines could be explained by failure of condition. That theory has fallen out of favour – it seems that no one accepts it today. This rejection rests upon a confusion over the nature of the doctrine of failure of condition. Once the nature of this doctrine has been clarified, we can see how closely the various doctrines align with one another; we can also see where the true difficulty with the failure of condition explanation lies.
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Grant, David. "Failure mechanisms and instrumentation systems for an induced slope failure project". Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243134.
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Vogler, Tracy John. "On the failure and post-failure of fiber composites in compression /". Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
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Ma, Eason, Daniel Janson i Nhu Quynh Le. "Small Business Failures : A study of the top-managers contribution to the failure". Thesis, Jönköping University, JIBS, Business Administration, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-1155.
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The economical importance and value of small businesses is today recognized by scholars as well as government institutes. The small business does not only contribute with a great amount of entrepreneurial activity and innovations but also as a significant tool in creating jobs. The statistics are however displaying a negative trend in the development of small businesses with over 350.000 – 400.000 business closures every year in UK. In Sweden 35,000 new enterprises entered the market in 2001 but only 62% were still active in 2004.
There are two major factors from which all other explanations are derived from when discussing why a company fails which is the external and internal factor. From the failure model created by Sharma and Mahajan and supported by other researchers, it is known that the problem initiating the failure may have been caused by uncontrollable factors. However the most significant factor behind a failure is derived from insufficient and ineffective management in the strategic process.
In order to understand how and most importantly why the top-managers decisions and actions contributes to a business failure the study focused on exploring the strategic process in numerous of failure cases of small businesses. This understanding is further strengthened by considering the limitations and resistances in the strategic process. There is also a link between the crisis management and strategic management which further provides with valuable insights of the process. Four different small businesses were therefore investigated in the report through an inductive and semi structured approach to explore the contexts of the failures in-depth. From the analysis of the empirical data collected from the top-managers and other employees, owners or managers evidence were collected to study the top-managers contribution to the failure.
The most significant contributing factor found in the business failures were the inefficient internal and external assessments. This was further found to be directly linked to the inadequate knowledge and experience possessed by the top-manager and his staff. Nepotism was also a factor that was found to be a very contributing source to the inadequate assessments. The managers staffed by the top-manager possessed a close relationship with the top-manager and may have been hired due to this reason and not based on the required knowledge which was proven to have a significant impact on all the studied cases.
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Johnsson, Helena. "Plug shear failure in nailed timber connections : avoiding brittle and promoting ductile failures /". Luleå : Univ, 2004. http://epubl.luth.se/1402-1544/2004/03.
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Grant, David. "Instrumentation systems for and failure mechanisms of an induced slope failure project". Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243025.
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Bayramyan, Anna. "Making success out of failures : A quantitative research in Failure culture and Quality improvement". Thesis, Mittuniversitetet, Institutionen för kvalitets- och maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-40261.
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Companies can draw valuable lessons from their failures, and use them for their improvementwork. A positive failure culture is however a necessary precondition. High reliabilityorganisations (HRO) are known for their effective way of tackling and using failures aspotential for improvements. The aims of the study were to evaluate failure culture in an ISO9001 certified company, after HRO standards and thereby withdraw improvementpossibilities. The study was conducted through a deductive quantitative method using asurvey for data gathering. With approximately 30 percent response rate, and using statisticaltests, the failure culture of the company was evaluated. The results showed that the companyis not currently reaching a failure culture within HRO standards, but nevertheless has positivetendencies rather than negative. Lastly, improvement possibilities were discussed andsuggestions for further research were given.2020-06-26
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MacDonald, Michael Ross. "Diabetes and heart failure". Thesis, University of Aberdeen, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540346.
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The aim of this thesis was to explore the relationship between diabetes and heart failure, particularly focusing on epidemiology, aetiology and treatment. I was granted access to a number of databases that included patients with both diabetes and heart failure. Chapter one is a systematic review of the literature and each subsequent chapter describes an analysis of the individual patient cohorts. Chapters two to five examine the association of diabetes with both short and long-term outcomes in populations with different types of heart failure: out-patients with chronic heart failure; acute heart failure; incident heart failure; and patients at high risk of heart failure following myocardial infarction. In the short-term, diabetes is not associated with increased mortality. It is, however, associated with an increased risk of heart failure. In the long-term, diabetes is associated with an increased risk of death and heart failure. The association of diabetes with prognosis is independent of age and co-morbidity. Chapter six examines the risk of unrecognised myocardial infarction in a diabetic cohort from the RECORD study. Unrecognised myocardial infarction may be an aetiological factor in the development of heart failure in diabetes. Chapter 7 is a case-control study of the GPRD cohort that examines the use of anti-diabetic treatments in patients with heart failure. Of all the treatments metformin was the only treatment associated with improved mortality. Diabetes and heart failure are so common and carry such a poor prognosis, when present together, that even a small advance in their treatment could result in considerable improvement in outcomes.
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Stone, Roger Phillip. "The taxonomy of failure". Thesis, Lancaster University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.524743.
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Elborn, Joseph Stuart. "Studies in heart failure". Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335936.
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Toft, Brian. "The failure of hindsight". Thesis, University of Essex, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256146.
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Tan, Yu Ting. "Understanding diastolic heart failure". Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4392/.
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Many patients who present with symptoms of heart failure are found to have a normal left ventricular ejection fraction and therefore were labelled as having “diastolic heart failure” implying that the underlying pathophysiology is due to diastolic dysfunction alone. However, using a combination of echocardiographical techniques, a variety of abnormalities were found including reduced longitudinal function, impaired left ventricular twist and torsional dyssynchrony in systole leading to reduced and delayed untwisting, impaired suction and reduced early diastolic left ventricular filling not fully compensated for in late diastole due to left atrial dysfunction. Furthermore in a group of subjects with treated hypertension, the most common risk factor for this form of heart failure, despite a normal resting echocardiogram, there were already substantial abnormalities of both systolic and diastolic function which were only apparent on exercise. Thus these studies have demonstrated that in heart failure with a normal ejection fraction, there are major abnormalities of systolic function especially torsion or twist, which impact on diastolic filling and that the condition is not due to diastolic dysfunction alone. In addition, these findings emphasise the importance of exercise echocardiography for diagnosis and detecting early left ventricular dysfunction before patients progress to developing heart failure.
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Sathiamoorthy, Sivashanker. "Compressive failure of composites". Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627244.
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Mostert, Lelane. "Central oxygen pipeline failure". Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86313.
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Thesis (MMed)--Stellenbosch University, 2014.ENGLISH ABSTRACT: Case Report - A case is described of central oxygen pipeline failure that occurred at a large academic hospital and its subsequent implications for managing the situation. Literature review - The literature review undertaken focused on the current state of affairs with regards to anaesthetic staff's knowledge of and preparedness for the management implications of central oxygen pipeline failure. The events I describe below demonstrate a significant deficiency in the staff’s understanding of and training for the crisis, which should be remedied to improve patient safety. Specific measures are suggested in the literature to prevent such incidents and guidelines are available to manage central oxygen pipeline failure. These are reviewed in this study. Recommendations - This study attempts to bring together the most critical aspects that need to be addressed to safely manage similar future incidents. Prevention should include measures to implement clearly stated disaster management plans and increased awareness with regards to the medical gas pipeline system (MGPS), simulation training, efficient alarm systems, personally conducted routine evaluations of equipment and emergency backup systems by anaesthesiologists and effective communication between hospital staff. Careful planning and successful coordination during maintenance and modification of the medical gas pipeline system, using piston-type or air-driven, rather than oxygen-driven, ventilators and optimal design of the hospital bulk oxygen system can contribute to reduce risks. In the event of central oxygen pipeline failure a specific sequence of actions should be taken by the anaesthesiologist and a clear institutional operational policy is described.
AFRIKAANSE OPSOMMING: Gevalsbeskrywing - 'n Geval van sentrale suurstoftoevoerversaking, wat plaasgevind het by 'n groot opleidingshospitaal, word bespreek. Daar word ook gekyk na die praktiese gevolge met betrekking tot die hantering van die situasie. Literatuurstudie - 'n Literatuurstudie is aangepak met die doel om te fokus op die huidige toedrag van sake betreffende narkosepersoneel se kennis en paraatheid in die hantering van sentrale suurstoftoevoerversaking. 'n Wesenlike gebrek aan begrip en opleiding aangaande hierdie onderwerp is geïdentifiseer – areas wat, met die nodige aandag, verbeter kan word ten einde die welstand van pasiënte te verseker. Spesifieke voorkomende maatreëls en hanteringsriglyne word voorgestel deur die literatuur en word gevolglik hersien in hierdie studie. Aanbevelings - Hierdie studie poog om kernaspekte aan te raak ten einde soortgelyke toekomstige voorvalle veilig en optimaal te kan hanteer. Voorkomende maatreëls behels onder meer die daarstelling van duidelik verstaanbare noodplanne, verbeterde bewustheid aangaande die mediese gaspypsisteem, simulasie-opleiding, doeltreffende alarmstelsels, effektiewe kommunikasie tussen hospitaalpersoneel, sowel as narkotiseurs wat self roetine-evaluasies van hul narkosetoebehore en -noodtoerusting uitvoer. Noukeurige beplanning en neweskikking tydens herstelwerk of werk aan die mediese gaspypsisteem, die gebruik van suierventilators (of dan lugaangedrewe in plaas van suurstofaangedrewe ventilators) en die optimale uitleg van 'n hospitaal se suurstoftoevoer, kan bydra om die risiko's te beperk. In die geval van sentrale suurstoftoevoerversaking behoort die narkotiseur stapsgewyse aksie te neem. 'n Duidelike institusionele noodbeleid word ook omskryf.
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Malère, João Pedro Pinheiro. "Hydraulic actuator failure prognostics". Instituto Tecnológico de Aeronáutica, 2007. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=970.
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This work presents an application of failure prognosis in the system command actuator of a commercial aircraft. An efficient failure prognostic algorithm provides a reduction in the number of unscheduled events and consequently generates a significant reduction in the maintenance costs. Although this is a simulation-based work, it presents a pre validation with bench tests data. The method starts by computational mathematical modeling of the system and this further validation by laboratory results. The sensitivity study of the variables is necessary in order to understand which parameters affect the system. The estimation of a confidence interval to determine the nominal behavior failure allows detection and isolation. Parity state techniques will be used for the residue signals design which will be the of the degradation measurement. A simulation of the failure behavior over the time to forecast when the system will reach a determined threshold is also presented.
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O'Donnell, Johanna. "Predicting heart failure deterioration". Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:f7e51226-128b-44eb-8f6a-557f1d0c9a53.
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Chronic heart failure (HF) is a condition that affects more than 900,000 people in the UK. Mortality rates associated with the condition are high, with nearly 20% of patients dying within one year of diagnosis. Continuous monitoring and risk stratification can help identify patients at risk of deterioration and may consequently improve patients' likelihood of survival. Current repeated-measure risk stratification techniques for HF patients often rely on subjective perception of symptoms, such as breathlessness, and markers of fluid retention in the body (e.g. weight). Despite the common use of such markers, studies have shown that they offer limited effectiveness in predicting HF-related events. This thesis set out to identify and evaluate new markers for repeated-measure risk stratification of HF patients. It started with an exploration of traditional HF measurements, including weight, blood pressure, heart rate and symptom scores, and aimed to improve the performance of these measurements using a data-driven approach. A multi-variate model was developed from data acquired during a randomised controlled trial of remotely-monitored HF patients. The rare occurrence of HF-related adverse events during the trial required the developement of a careful methodology. This methodology helped identify the markers with most predictive ability, which achieved moderate performance at identifying patients at risk of HF-related adverse events, clearly outperforming commonly-used thresholds. Subsequently, this thesis explored the potential value of additional, accelerometer-derived physical activity (PA) and sleep markers. For this purpose, the ability of accelerometer-derived markers to differentiate between individuals with and without HF was evaluated. It was found that markers that summarise the frequency and duration of different PA intensities performed best at differentiating between the two groups and may therefore be most suitable for future use in repeated-measure applications. As part of the analysis of accelerometer-derived HF markers, a gap in the methodology of automated accelerometer processing was identified, namely the need for self-reported sleep-onset and wake-up information. As a result, Chapter 5 of this thesis describes the development and evaluation of a data-driven solution for this problem. In summary, this thesis explored both traditional and new, accelerometer-derived markers for the early detection of HF deterioration. It utilised sound methodology to overcome limitations faced by sparse and unbalanced datasets and filled a methodological gap in the processing of signals from wrist-worn accelerometers.
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Roussouw, Chad. "A history of failure". Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/10653.
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Includes bibliographical references.A history of failure implies several things. It can point to a chronology of the concept of failure, like so many contemporary history books that chart a minute aspect of culture. It could refer to a personal record, like a criminal having a history of violence. The implication is also there that history itself has failed to achieve, failed to describe, failed to move forward, failed to be history at all. History in this essay is not just the study of the past, but also its use in culture - to separate us from nature, to validate ideologies or to provide insight into our present. History in these terms is not a sequence of physical events, but the representation of these events. These representations exhibit curious behaviour: no matter their function they appeal to truth. History uses the language of the real to validate itself (Culler 2002: Kindle edition'), and this language is often constituted into narrative (which I will discuss in some detail later).
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Siegfried, Cary Ann. ""Failure to Yield": Essays". Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062910/.
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Failure to Yield is a collection of creative nonfiction that explores themes of presence and emotional connection and expression. The seven essays, which include three flash essays, explore the themes by reflecting on such topics as marriage, parent-child relationships and addiction. The collection is woven together by the author's relationships with her parents and children and by her experiences growing up in a small town in Iowa.
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Ombete, Kenneth. "Preventing chemical product failure". Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Ombete_09007dcc80706a6e.pdf.
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Thesis (M.S.)--Missouri University of Science and Technology, 2009.Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 17, 2009) Includes bibliographical references (p. 27-30).
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Wills, Ian. "Edison, innovation and failure". Thesis, The University of Sydney, 2010. https://hdl.handle.net/2123/28959.
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Using the papers of Thomas Edison as a historic source, this dissertation examines the
relationship between failure and the creation of innovative (i.e. novel) artefacts. Case studies
used include Edison's invention of the carbon microphone and Phonograph, and his claim to
have discovered a new force of nature. The dissertation combines historical analysis with the
development of a number of theoretical models to argue for new approaches to success and
failure, artefacts, innovation and systems.
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Channing, Jill. "Generating Innovation Through Failure". Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/4876.
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De-Vilder, Saskia Joan. "Controls on the evolution of strength and failure style in shallow rock slope failures". Thesis, Durham University, 2018. http://etheses.dur.ac.uk/12819/.
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Rock fall failure comprises fracturing through zones of intact rock, known as rock bridges, and kinematic release along discontinuity surfaces. Understanding controls on magnitude – frequency relationships of rockfalls, and their associated failure characteristics aids susceptibility analysis and interpretation of pre-failure deformation. For failure to occur, these rock bridges must have been weakened, with this damage accumulation driven by a suite of weathering processes. This thesis aims to explore the spatial and temporal controls on weathering induced strength degradation and its subsequent influence on the mechanics of rockfall detachment. Within this, it examines the role of gravitational ambient stress, as dictated by slope topography and rock mass structure, which recent research suggests influences the efficiency of weathering processes. The project integrates field observations, analogue experiments and numerical modelling over varying spatial scales. Terrestrial laser scanning and gigapixel photography are combined to forensically map rock bridge attributes within rockfall detachment surfaces. The role of slope geometry and rock mass structure in concentrating stress is assessed via conceptual finite element models. Finally, samples are subjected to stress conditions induced by the slope structure and environmental conditions in a series of weathering analogue experiments. Together, these results indicate that weathering significantly reduces intact rock strength with areas of stress concentration purely a mechanical control on rockfall release rather than a temporal control on weakening. Weaker rock is characterised by substantial post-peak strength, which requires multiple stages of brittle fracture before ultimate failure occurs. This in turn influences the stages of failure required through rock bridges before final failure, with this number of rock bridges dependent on rockfall size. Mechanically, failure mode is dependent on rock bridge proportion, distribution and location for individual rockfalls. A conceptual model describes magnitude-frequency characteristics and the observable pattern of pre-failure deformation expected for different stages of weathering.
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Qiu, Qun. "Risk Assessment of Power System Catastrophic Failures and Hidden Failure Monitoring & Control System". Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/11075.
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One of the objectives of this study is to develop a methodology, together with a set of software programs that evaluate, in a power system, the risks of catastrophic failures caused by hidden failures in the hardware or software components of the protection system.
The disturbance propagation mechanism is revealed by the analysis of the 1977 New York Blackout. The step-by-step process of estimating the relay hidden failure probability is presented. A Dynamic Event Tree for the risk-based analysis of system catastrophic failures is proposed. A reduced 179-bus WSCC sample system is studied and the simulation results obtained from California sub-system are analyzed. System weak links are identified in the case study. The issues relating to the load and generation uncertainties for the risk assessment of system vulnerabilities are addressed.
A prototype system - the Hidden Failure Monitoring and Control System (HFMCS) - is proposed to mitigate the risk of power system catastrophic failures. Three main functional modules - Hidden Failure Monitoring, Hidden Failure Control and Misoperation Tracking Database - and their designs are presented. Hidden Failure Monitoring provides the basis that allows further control actions to be initiated. Hidden Failure Control is realized by using Adaptive Dependability/Security Protection, which can effectively stop possible relay involvement from triggering or propagating disturbance under stressed system conditions.
As an integrated part of the HFMCS, a Misoperation Tracking Database is proposed to track the performance of automatic station equipment, hence providing automatic management of misoperation records for hidden failure analysis.Ph. D.
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Huiskes, Bonita Louise. "Advanced heart failure in older women with heart failure and preserved systolic function". Diss., Search in ProQuest Dissertations & Theses. UC Only, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3390049.
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Alexander, P. B. "The failure of corporate failure models to classify and predict : aspects and refinements". Thesis, University of Canterbury. Accounting, 1991. http://hdl.handle.net/10092/10484.
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Much has been written about the use of multiple discriminant analysis in corporate distress classification and forecasting. Classification and prediction models are notoriously difficult to establish in such a way that they will stand the ultimate test of time. Many articles severely criticise the use of the technique yet there are aspects which may improve our ability to develop satisfactory models. We are probably yet a long way off from being able to do so with any great degree of satisfaction, yet it behoves us to try to develop models that do justice to the assumptions and the theory. This thesis explores several important aspects of the model-building process and concludes that some of the more conventional criticisms of the models developed so far are less important than claimed. It suggests that more critical than the failure to meet the conditions of multivariate normality, the equality of the variance-covariance matrices, and the use of a priori probabilities are the need for: a satisfactory model specification that can be theoretically justified, the strict use of random sampling, the efficient use of sample data, the search for stable mean vectors which are significantly different from each other, and ex ante validation. If these requirements are met then the MDA technique is robust enough to cope with breaches of the assumptions.
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Gan, Kam. "Intended success and unintended failure : opening up the black box of organisational failure". Thesis, University of Sheffield, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419612.
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PIADEHBASMENJ, AMIRALI. "ENTREPRENEURIAL VENTURE FAILURE EXPERIENCES : AN ANALYSIS INTO CAUSES, COSTS, ANDOUTCOMES OF VENTURE FAILURE". Thesis, KTH, Industriell Marknadsföring och Entreprenörskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199194.
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Forskning om entreprenörskap fokuserar på framgång som ignorerar den höga felfrekvensen av Nya företag. Många nya företag misslyckas så hur entreprenörer hantera det när deras företag misslyckas? Framgångsrika entreprenörer prisar fördelarna med misslyckande som en värdefull lärare. Resultatet av misslyckande regelbundet fylld med ekonomiska, sociala, psykologiska och fysiska hälsoproblem. Syftet med denna forskning är att bedöma företagets misslyckande upplevelser för företagare, från det ögonblick resultatet genom att återhämtningen för att hantera företagande fel och avsluta för påverkan av den slutna företag. I denna forskning aspekter av livet som påverka av entreprenörs fel undersöka ekonomiskt, socialt och psykologiskt att belysa faktorer som kan påverka mängden av kostnaderna för ett misslyckande. Därefter beskriver forskningen hur entreprenörer lära av misslyckanden. Den presenterar på resultaten av företagets misslyckande, inklusive hantera fel och återhämtning tillsammans med kognitiva och beteendemässiga utfall.Research on entrepreneurship focuses on success which ignores the high failure rate of new ventures. Many new ventures fail so how entrepreneurs deal with it when their venture fails? Successful entrepreneurs praising the advantages of failure as a valuable teacher. The result of failure is regularly filled with economic, social, psychological, and physical health disorder. The aim of this research is to assessment venture failure experiences for entrepreneurs, from the instant result through to recovery for coping with entrepreneurial failure and exit for impact of the closed venture. In this research, aspects of life affected by entrepreneurial failure examine economically, socially and psychologically in highlighting factors that may influence the amount of costs of failure. Next, the research describes how entrepreneurs learn from failure. It presents on the outcomes of venture failure, including coping with failure and recovery together with cognitive and behavioral outcomes. The main objective of the research study is to understand the failure from entrepreneurs who have experienced it and also to make a theoretical framework of failure based on entrepreneurial venture failure experiences. Every entrepreneur starts up a venture with high expectations of achieving success. Failure can be emotionally disturbing, devastating, painful, distressing and costly for the entrepreneur who may have to aspect the stigma of failure and the loss of reputation. The entrepreneur can get involved in grief, heartache, anxiety, depression, shame, rejection and discouragement (Politis & Gabrielsson, 2009). The purpose of the research is to investigate how entrepreneurs realize and react to venture failure. Moreover, entrepreneurs are looking for positive aspects of failure as enhancing experiences that help their coping with entrepreneurial failure, learning from failure, the willingness to begin a new venture and also trigger changes in upcoming decision-making. The purpose of the research is to take a view of the existed experience of failure, taking into consideration impact from the entrepreneurship.
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Signor, Michael C. "The Failure Analysis Matrix: A Usable Model for Ranking Solutions to Failures in Information Systems". NSUWorks, 2000. http://nsuworks.nova.edu/gscis_etd/838.
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Failure Modes and Effects Analysis (FMEA) is a Six Sigma tool for identifying, analyzing and prioritizing failures and solutions. FMEA is widely used in many different industries worldwide. The FMEA model is neither easy to learn nor easy to use. Effective FMEA automation has been an elusive goal for some time. The scope of meaningful FMEA automation has been limited to specific proprietary or academic application domains where substantial time and effort have been invested. Commercially available FMEA software packages do little more than reduce clerical effort. There has been no published research on the usability of FMEA. Most of the recent FMEA research has applied various artificial intelligence technologies. The vast majority of FMEA research has been directed toward manufactured products rather than information systems. The author has examined the use of FMEA for software development.
The author's goal for this dissertation was the creation of a usable failure analysis matrix (FAM) model for prioritizing solutions to failures in information systems. The two-dimensional F AM worksheets are smaller than the linear FMEA worksheets, requiring less scrolling. The F AM is an alternative method to help identify the most important potential failures or failures and help prioritize alternative solutions using approximate expected costs. This new tool, implemented in Excel, provides integrated data entry and reporting. The F AM may be used without having detailed information.
The author validated four usability attributes for the F AM: usefulness, ease of use, ease of learning, and satisfaction. The validation process employed expert reviews, usability testing, and a usability questionnaire. The final mean value of 5.30 for usability questionnaire items compares favorably with a neutral value of 4. The F AM underwent expert reviews with reviewers from three different domains of expertise: usability, FMEA, and Six Sigma. Usability test subjects were 20 GE Industrial Systems information systems professionals. The test subjects applied the F AM to real information systems failures.
The author has improved professional practice by applying usability engineering to a problem analysis tool for software development. Expert reviews and usability testing both proved to be applicable to the design of the F AM. The expert reviews resulted in the inclusion of several important attributes of the FAM. The usability testing resulted in shorter task completion times and less severe usability problems.
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Zhang, Xuesong, i n/a. "Punching Shear Failure Analysis of Reinforced Concrete Flat Plates Using Simplified Ust Failure Criterion". Griffith University. School of Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051104.153239.
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Failure criteria play a vital role in the numerical analysis of reinforced concrete structures. The current failure criteria can be classified into two types, namely the empirical and theoretical failure criteria. Empirical failure criteria normally lack reasonable theoretical backgrounds, while theoretical ones either involve too many parameters or ignore the effects of intermediate principal stress on the concrete strength. Based on the octahedral shear stress model and the concrete tensile strength under the state of triaxial and uniaxial stress, a new failure criterion, that is, the simplified unified strength theory (UST), is developed by simplifiing the five-parameter UST for the analysis of reinforced concrete structures. According to the simplified UST failure criterion, the concrete strength is influenced by the maximum and intermediate principal shear stresses together with the corresponding normal stresses. Moreover, the effect of hydrostatic pressure on the concrete strength is also taken into account. The failure criterion involves three concrete strengths, namely the uniaxial tensile and compressive strengths and the equal biaxial compressive strength. In the numerical analysis, a degenerated shell element with the layered approach is adopted for the simulation of concrete structures. In the layered approach, concrete is divided into several layers over the thickness of the elements and reinforcing steel is smeared into the corresponding number of layers of equivalent thickness. In each concrete layer, three-dimensional stresses are calculated at the integration points. For the material modelling, concrete is treated as isotropic material until cracking occurs. Cracked concrete is treated as an orthotropic material incorporating tension stiffening and the reduction of cracked shear stiffness. Meanwhile, the smeared craclc model is employed. The bending reinforcements and the stirrups are simulated using a trilinear material model. To verify the correctness of the simplified UST failure criterion, comparisons are made with concrete triaxial empirical results as well as with the Kupfer and the Ottosen failure criteria. Finally, the proposed failure criterion is used for the flexural analysis of simply supported reinforced concrete beams. Also conducted are the punching shear analyses of single- and multi-column-slab connections and of half-scale flat plate models. In view of its accuracy and capabilities, the simplified UST failure criterion may be used to analyse beam- and slab-type reinforced concrete structures.
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Piadehbasmenj, Amirali. "Entrepreneurial Venture Failure Experiences : An analysis into causes, costs, and outcomes of venture failure". Thesis, KTH, Entreprenörskap och Innovation, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202587.
Pełny tekst źródłaStreszczenie:
Research on entrepreneurship focuses on success which ignores the high failure rate of new ventures. Many new ventures fail so how entrepreneurs deal with it when their venture fails? Successful entrepreneurs praising the advantages of failure as a valuable teacher. The result of failure is regularly filled with economic, social, psychological, and physical health disorder. The aim of this research is to assessment venture failure experiences for entrepreneurs, from the instant result through to recovery for coping with entrepreneurial failure and exit for impact of the closed venture. In this research, aspects of life affected by entrepreneurial failure examine economically, socially and psychologically in highlighting factors that may influence the amount of costs of failure. Next, the research describes how entrepreneurs learn from failure. It presents on the outcomes of venture failure, including coping with failure and recovery together with cognitive and behavioral outcomes. The main objective of the research study is to understand the failure from entrepreneurs who have experienced it and also to make a theoretical framework of failure based on entrepreneurial venture failure experiences. Every entrepreneur starts up a venture with high expectations of achieving success. Failure can be emotionally disturbing, devastating, painful, distressing and costly for the entrepreneur who may have to aspect the stigma of failure and the loss of reputation. The entrepreneur can get involved in grief, heartache, anxiety, depression, shame, rejection and discouragement (Politis & Gabrielsson, 2009). The purpose of the research is to investigate how entrepreneurs realize and react to venture failure. Moreover, entrepreneurs are looking for positive aspects of failure as enhancing experiences that help their coping with entrepreneurial failure, learning from failure, the willingness to begin a new venture and also trigger changes in upcoming decision-making. The purpose of the research is to take a view of the existed experience of failure, taking into consideration impact from the entrepreneurship.Forskning om entreprenörskap fokuserar på framgång som ignorerar den höga felfrekvensen av nya företag. Många nya företag misslyckas så hur entreprenörer hantera det när deras företag misslyckas? Framgångsrika entreprenörer prisar fördelarna med misslyckande som en värdefull lärare. Resultatet av misslyckande regelbundet fylld med ekonomiska, sociala, psykologiska och fysiska hälsoproblem. Syftet med denna forskning är att bedöma företagets misslyckande upplevelser för företagare, från det ögonblick resultatet genom att återhämtningen för att hantera företagande fel och avsluta för påverkan av den slutna företag. I denna forskning aspekter av livet som påverkas av entreprenörs fel undersöka ekonomiskt, socialt och psykologiskt att belysa faktorer som kan påverka mängden av kostnaderna för ett misslyckande. Därefter beskriver forskningen hur entreprenörer lära av misslyckanden. Den presenterar på resultaten av företagets misslyckande, inklusive hantera fel och återhämtning tillsammans med kognitiva och beteendemässiga utfall.
41
Zhang, Xuesong. "Punching Shear Failure Analysis of Reinforced Concrete Flat Plates Using Simplified Ust Failure Criterion". Thesis, Griffith University, 2003. http://hdl.handle.net/10072/365777.
Pełny tekst źródłaStreszczenie:
Failure criteria play a vital role in the numerical analysis of reinforced concrete structures. The current failure criteria can be classified into two types, namely the empirical and theoretical failure criteria. Empirical failure criteria normally lack reasonable theoretical backgrounds, while theoretical ones either involve too many parameters or ignore the effects of intermediate principal stress on the concrete strength. Based on the octahedral shear stress model and the concrete tensile strength under the state of triaxial and uniaxial stress, a new failure criterion, that is, the simplified unified strength theory (UST), is developed by simplifiing the five-parameter UST for the analysis of reinforced concrete structures. According to the simplified UST failure criterion, the concrete strength is influenced by the maximum and intermediate principal shear stresses together with the corresponding normal stresses. Moreover, the effect of hydrostatic pressure on the concrete strength is also taken into account. The failure criterion involves three concrete strengths, namely the uniaxial tensile and compressive strengths and the equal biaxial compressive strength. In the numerical analysis, a degenerated shell element with the layered approach is adopted for the simulation of concrete structures. In the layered approach, concrete is divided into several layers over the thickness of the elements and reinforcing steel is smeared into the corresponding number of layers of equivalent thickness. In each concrete layer, three-dimensional stresses are calculated at the integration points. For the material modelling, concrete is treated as isotropic material until cracking occurs. Cracked concrete is treated as an orthotropic material incorporating tension stiffening and the reduction of cracked shear stiffness. Meanwhile, the smeared craclc model is employed. The bending reinforcements and the stirrups are simulated using a trilinear material model. To verify the correctness of the simplified UST failure criterion, comparisons are made with concrete triaxial empirical results as well as with the Kupfer and the Ottosen failure criteria. Finally, the proposed failure criterion is used for the flexural analysis of simply supported reinforced concrete beams. Also conducted are the punching shear analyses of single- and multi-column-slab connections and of half-scale flat plate models. In view of its accuracy and capabilities, the simplified UST failure criterion may be used to analyse beam- and slab-type reinforced concrete structures.Thesis (Masters)
Master of Philosophy (MPhil)
School of Engineering
Full Text
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Papaefthymiou, Spyros. "Failure mechanisms of multiphase steels /". Aachen : Shaker, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014183924&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Dounias, George Theodoros. "Progressive failure in embankment dams". Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/8350.
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Khand, Aleem U. "Arterial fibrillation and heart failure". Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288911.
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Yao, Chicao. "Failure mechanisms of concrete masonry". Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29323.
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The behaviour of concrete masonry under in-plane compression combined with out-of-plane bending was examined both experimentally and analytically.
Ungrouted and grouted masonry, both fully bedded or face-shell bedded, were included in the study. It was found that the masonry under the above stated loading conditions may suffer loss of capacity either due to splitting or shear type of material failure, or by instability. Different loading conditions yield different failure mechanisms, which in turn correspond to different apparent strengths. Theoretical developments are presented leading to estimates of capacity for each of these cases. An extensive experimental program involving 104 masonry prism specimens, was conducted to assist and to verify these analyses.
Theoretical developments include those directed to explain splitting failure phenomena, to investigate the mortar joint effect, the deformation compatibility of grouted masonry, and to examine the slenderness of tall masonry wall. Experimental measurements and observations made on the specimens include capacity, deformation and failure pattern.Applied Science, Faculty of
Civil Engineering, Department of
Graduate
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Thomas, Richard Charles. "Sexual failure among spiritual leaders". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq22041.pdf.
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Smeltz, Jeremy M. Valerius Andrew J. "Sensor failure detection through introspection". Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Jun%5FSmeltz.pdf.
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Thesis (M.S. in Computer Science)--Naval Postgraduate School, June 2007.Thesis Advisor(s): Craig Martell, Kevin Squire. "June 2007." Includes bibliographical references (p. 39-40). Also available in print.
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Gwadry-Sridhar, Femida Guyatt Gordon Henry. "Educating patients with heart failure /". [Hamilton, Ont.] : McMaster University, 2005.
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Griffiths, Robert P. "Continuum modeling of interface failure". Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FGriffiths.pdf.
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Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, December 2007.Thesis Advisor(s): Kwon, Young W. "December 2007." Description based on title screen as viewed on January 18, 2008 Includes bibliographical references (p. 39-40). Also available in print.
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