Dissertations / Theses on the topic 'Tolerance'
To see the other types of publications on this topic, follow the link: Tolerance.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Tolerance.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Hadley, Ruth. "A year to tolerate tolerance? : an analysis of the UN 'Year of Tolerance' in the context of the theoretical debate on tolerance, 1945-2010." Thesis, University of Manchester, 2013. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:184929.
Full textAbstract:
The practice of making international dedications (of days, weeks or years) proliferated in the second half of the twentieth century with the rise of international institutions like the United Nations. The practice contrasts alternative dealings with time i.e. sacred time or dedication as commemoration. International dedications celebrate a concept of social or environmental importance, with a particular emphasis on awareness raising and inculcating change on a practical level. 1995 was the ‘United Nations International Year for Tolerance’. To the study of tolerance, the ‘Year’ marks the apex of tolerance as an object of modern international concern. This thesis is divided into two halves. The former undertakes a close analysis of the build-up to the UN ‘Year of Tolerance’ (Chapter One), the ‘Year’ itself and the subsequent follow-up (Chapter Two). It likewise provides a more general account of the rise and practice of international dedication making. The second half of this thesis addresses the broader theoretical debate on tolerance, 1945-2010. This thesis understands the UN ‘Year of Tolerance’ as a particular institutionalised expression of a specific theoretical mode of tolerance, taken from the theoretical debate on tolerance, and masked by the veneer of cultural universality. It uses 1995 as an artificial marker to gauge continuity and change in the debate on tolerance and to demarcate between Chapter Three-Chapter Four (pre-1995) and Chapter Five-Chapter Six (post-1995). The conclusion summarises the principal points of continuity and discontinuity and finally contextualises the UN ‘Year of Tolerance’ in the theoretical debate on tolerance i.e. as the institutional embodiment of a particular liberal-‘political’ mode of tolerance and an international attempt at final foreclosure of the controversy around tolerance. In seeking to critically account for the UN ‘Year of Tolerance’, and likewise to provide a general overview of continuity and change in the modern theoretical debate of tolerance, this thesis seeks to redress ‘a gap’ in current academic research.
2
Potts, Malcolm. "Desiccation tolerance." Thesis, Durham University, 1995. http://etheses.dur.ac.uk/9528/.
Full textAbstract:
Despite the fundamental significance of desiccation in determining the distributions and activities of living organisms, there is virtually no insight as to the state of the cytoplasm of an air-dried, or even a wet, cell. In bacterial cells that have been subjected to air-drying the evaporation of free cytoplasmic water (Vf) can be instantaneous, and an equilibrium between cell-bound water (VQ and the environmental water (vapor) potential (Ψwv)) may be achieved very rapidly. In the air-dried state some bacteria survive only for seconds, others can tolerate desiccation for thousands, perhaps for millions, of years. The means by which certain cells, the anhydrobiotes, overcome and then tolerate acute water deficit remains one of the most intractable problems in cell biology. One such anhydrobiote, the cyanobacterium Nostoc commune, is cosmopolitan, its colonies form visually-conspicuous and abundant growths in situ, and it constitutes an ecologically-significant component of terrestial nitrogen-fixing communities. The cyanobacteria are phylogenetically-significant organisms that provide model systems for the study of a broad range of problems in cell biology. The studies described in this thesis established the molecular ecology and cell biology of Nostoc commune, and they provide a chronicle of the development of this microorganism as the prokaryotic model for the anhydrobiotic cell. In the design of experiments to investigate this problem the bias was, and remains, this: to understand desiccation tolerance, understand an organism that tolerates desiccation. The thesis documents an investigation into the consequences of acute cell-water deficit and the cellular basis for desiccation tolerance. An eclectic approach has been adopted to study desiccation tolerance and it includes the application of techniques of cell biology, biochemistry, microbiology, molecular biology, structural biology and biophysics.
3
Clements, N. Scott. "Fault tolerance control of complex dynamical systems." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/15515.
Full text
4
Shehabi, Murtaza Kaium. "Cost tolerance optimization for piecewise continuous cost tolerance functions." Ohio : Ohio University, 2002. http://www.ohiolink.edu/etd/view.cgi?ohiou1174937670.
Full text
5
Wood, Douglas M. (Douglas Michael). "Discriminative Stimulus Properties of Cocaine: Tolerance and Cross-Tolerance Characteristics." Thesis, North Texas State University, 1985. https://digital.library.unt.edu/ark:/67531/metadc500536/.
Full textAbstract:
Rats were trained to discriminate an injection of cocaine, 5.0 mg/kg, from an injection of saline, using a two-lever choice paradigm: one lever was correct after cocaine injection, the other lever was correct after a saline injection. After training, cocaine and methamphetamine were generalized to the cocaine lever, but phenethylamine (PEA) was only partially generalized. Cocaine was injected every 8 hrs, 20.0 mg/kg, and the discriminability of 5.0 mg/kg was tested every other day. Redetermination of the cocaine generalization curve after 6 days of chronic administration showed a shift to the right, from an ED50 of 4.1 mg/kg in the pre-chronic condition to 10.0 mg/kg. Tolerance did not develop to the behavioral effects of cocaine, measured by time to the first reinforcement and response rate. There was cross-tolerance to methamphetamine; however, no evidence for cross-tolerance to PEA was obtained. Following the acquisition of tolerance, chronic administration of cocaine was terminated, and the discriminability of 5.0 mg/kg was tested every other day for loss of tolerance. After 8 days the ED50 returned to 5.0 mg/kg.
6
Denardin, Fernanda Kruel. "Software tolerante a falhas para aplicações tempo real." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1997. http://hdl.handle.net/10183/20922.
Full textAbstract:
Esta dissertação aborda um ramo da computação que se encontra em crescente desenvolvimento: a computação em tempo real. Os sistemas de computação tempo real surgiram a partir da necessidade de substituição do controle humano, que muitas vezes é falho, em situações complexas ou críticas, onde máxima confiabilidade e disponibilidade são exigidas para garantir a segurança do sistema. A área de aplicação diferencia-se de outras convencionais por possuir diferentes tipos de restrições de tempo e operar em ambientes não-determinísticos. Entretanto, atualmente tais sistemas estão tornando-se grandes, complexos, distribuídos, adaptativos e cada vez mais presentes nas aplicações do dia-a-dia,o que tende a exigir soluções mais simples e generalizadas. Pelo fato de tais sistemas normalmente atuarem sobre aplicações críticas, importante salientar que, em algumas situações, pequenos erros no sistema podem levar a grandes catástrofes. Mesmo atrasos mínimos no tempo de resposta são problemáticos, podendo ocasionar degradações ou ações erradas no mundo físico controlado pelo sistema tempo real. Como nestes casos máxima confiabilidade e disponibilidade são exigidas para garantir a sua segurança, tornou-se importante a construção de sistemas tempo real tolerantes a falhas. Dessa forma, é visivelmente crescente a necessidade de utilização de mecanismos capazes de abordar os requisitos de tempo real e tolerância a falhas de forma integrada durante o desenvolvimento do sistema. Assim, o processo de desenvolvimento de sistemas tempo real confiáveis torna-se mais simples e mais eficiente. A necessidade de maior conhecimento do uso de tolerância a falhas para obter segurança no funcionamento de aplicações tempo real levou ao desenvolvimento deste trabalho, onde buscou-se um caminho de solução para a adequação das técnicas de tolerância a falhas a estas aplicações. Sabe-se que para produzir software confiável e, desta forma de maior qualidade, além do emprego de boas técnicas de engenharia de software, é necessário compreender os principais conceitos e técnicas de tolerância a falhas. Por outro lado, é importante ter-se conhecimento dos mecanismos oferecidos pelas diversas camadas de software de um sistema - protocolo de comunicação, sistema operacional e linguagem de programação - para apoiar estas atividades de tolerância a falhas. Este trabalho busca analisar os mecanismos e técnicas usados na implementação de software tolerante a falhas frente às situações mencionadas, uma vez que nem todas as técnicas conhecidas podem ser indistintamente aplicáveis a estas situações. Os resultados desta análise são organizados na forma de uma taxonomia, visando assim auxiliar projetistas de desenvolvimento de software a tomarem decisões importantes na construção de sistemas tempo real tolerantes a falhas. Os mecanismos são agrupados de acordo com o nível de implementação: sistemas operacionais, linguagens de programação e protocolos de comunicação, destacando suas características e aplicabilidade. Por fim uso da classificação é demonstrado com a análise de três casos-exemplo.This dissertation is about a, computer science field which is in growing development, that is, real-time computation. Real-time computing systems have emerged from the necessity of substituting. human control which is sometimes failed in complex or critical situations. In these ones maximum availability and reliability are requested in order to guarantee the system dependability. The application area differs from the conventional ones because it has particular time constraints and operates in nondeterministic environments. Nevertheless, nowadays such systems are becoming large, complex, distributed and adaptive but tend to demand simpler and generalized solutions as they are more present in daily applications. Since such systems normally act on critical applications it is important to reinforce, that in some situations, subtle systems errors may generate big catastrophes. Even slight delays in response time are troublesome and they may cause degradation or wrong acts in physical world controlled by real-time systems. In these cases maximum reliability and availability are requested in order to guarantee system dependability. Thereby, the requirement of including mechanisms capable of achieving real-time and fault tolerance in an integrated way during the system design has been increased. Thus, the developing process of reliable real-time systems becomes simpler and more effective. The necessity of improving designers knowledge on using fault tolerance in order to obtain dependability on real-time applications has motivated this study. Our main goal has been to find an adequate way of using fault tolerance techniques to these applications. It is known that the development of reliable software not only requires appropriate software engineering techniques but also demands understanding of main politics and mechanisms used to implement fault tolerance techniques in these situations. Otherwise, it is very important to know the related support that is offered by the different software levels of a system - communication protocol, operating system and programming language. This study has as purpose analyzing the mechanisms and techniques used in implementation of fault-tolerant software applied to the previously mentioned situations. The basic supposition is that not all the known techniques may be applied indistinctly to these situations. The properties of the software are organized according to a taxonomy, where the mechanisms are bracketed in groups according to implementation level: operating systems, programming languages and communication protocols. In this presentation, the characteristics and applicability of the software tools are stood out in order to help developing-software designers to decide what is important to build faulttolerant software. Finally, the use of the classification is demonstrated by analyzing three case-examples.
7
Crockford, Andrew. "Deciphering tetraploid tolerance." Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1475158/.
Full textAbstract:
Chromosomal instability and aneuploidy are common features of human malignancies, which fuel genetic heterogeneity and can lead to inaccurate diagnosis and treatment failure. Tetraploidy has been shown as an intermediate of aneuploidy and, thus, understanding the molecular mechanisms governing tetraploid tolerance is of great importance. A frequent tolerance mechanism observed in experimental systems and human tumours is loss of TP53, highlighting its central role in the tetraploidy checkpoint. However, despite this association, more than half of genome-doubled tumours are TP53 wild-type. The aim of this project was to understand how tetraploid cells could tolerate the polyploidy phenotype with a functional p53/p21 axis. Firstly, tetraploidy tolerance was investigated in an isogenic HCT-116 diploid and tetraploid system. The HCT-116 tetraploids showed functional p53, in response to DNA damage and segregation error induction, while also displayed elevated basal level of both proteins. Despite this, the tetraploid clones could proliferate and showed no evidence of cell cycle arrest, suggesting the p53/p21 tetraploidy checkpoint response had been overridden. Quantitative proteomics revealed cyclin D1 overexpression in the tetraploid clones. As cyclin D1 can sequester p21, their relationship was investigated and validated in the HCT-116 system. To further test if elevated cyclin D1 could affect tolerance, cytokinesis failure was pharmacologically induced in RPE cells, where cyclin D1 overexpression promoted tetraploidy tolerance across multiple assays. In addition, bioinformatics analysis revealed that D-type cyclins were overexpressed in TP53, CDKN1A and RB1 wild-type, genome-doubled testicular germ cell tumours (TGCT). These findings indicate that D-type cyclin overexpression can provide tetraploidy tolerance in vitro and may be implicated in TGCT genome-doubling and pathogenesis.
8
Mpoeleng, Dimane. "From crash tolerance to Byzantine tolerance : fail signalling dependable distributed systems." Thesis, University of Newcastle Upon Tyne, 2005. http://hdl.handle.net/10443/2142.
Full textAbstract:
Many fault-tolerant group communication middleware systems have been implemented assuming crash failure semantics. While this assumption is not unreasonable, it becomes hard to justify when applications are required to meet high reliability requirements and are built using commercial off the shelf (COTS) components. This thesis implements new techniques to deal with Byzantine faults in a distributed group communication system. This thesis proposes a technique by which a process is duplicated into two replicas such that the process is turned into a self-checking pair with the two replicas communicating synchronously over a reliable network, but two different replicas from different processes can be connected asynchronously. The proposed approach is based on the replicas obeying state machine replication (SMR). SMR is utilised to assure signal-on-failure (fail-signal) semantics. One or both of the two replicas always issues a signal to other entities whenever there is a failure between and within the entities. This way, dependable activities such as group member failure detection, liveliness and security are removed from the upper layer of group communication service down to the two-replica pairs. With most of failure detection and security activities confined between the two replicas, semantics of a group communication are simplified and the number of phases and rounds of group communication protocols is reduced. The thesis demonstrates the fail-signalling concept by converting a group communication system member, through duplication of each group member, into a self checking pair. Security is augmented to the replicas' fail signalling capabilities to tolerate even more serious Byzantine faults. Performance results of the traditional group communication system are compared with results of a group system with duplicated fail signalling group members. The thesis has proven that the fail signalling group communication has the advantage of detecting failures faster without suspicions and that resulted in better group communication semantics, better dealing with member failures and faster formation of new group views.
9
Séron, Fabienne. "L'economie psychosomatique des transplantes renaux - une tolerance immunologique, une tolerance psychologique ?" Paris 5, 1987. http://www.theses.fr/1987PA05H067.
Full textAbstract:
Dans cette recherche, nous formulons une question fondamentale : quels sont les facteurs intervenant dans la reussite d'une transplantation renale ? une double tolerance (immunologique et psychologique) concourt au maintien de l'equilibre homeostatique ou de l'economie psychosomatique, toujours singuliere selon les sujets. Nous postulons l'existence d'un lien particulier unissant l'organisation mentale d'un greffe a la valeur fonctionnelle du greffon. Des situations traumatiques precipitent frequemment la survenue d'une maladie. La maniere de vivre et d'elaborer celle-ci s'avere bien specifique, selon les caracteristiques d'organisation mentale. Les sujets porteurs d'une meme affection somatique ne presentent pas les memes particularites de fonctionnement mental. De multiples parametres en interaction favorisent ou non la tolerance immunologique et psychologique du greffon : la capacite de developper une symptomatologie mentale assure une certaine protection du corps. La richesse fantasmatique, la possibilite de negocier les conflits et de tolerer une angoisse determinent en partie la tolerance immunologique. Nous soulignons les apports fondamentaux de l'environnement exterieur pour certains sujets, tres carences sur le plan de l'organisation mentale. Leur equilibre psychosomatique se maintient a la faveur des contre-investissements externes (medicaux, chimiotherapiques, relationnels). Ceci exerce une fonction pare-excitante prenant le relais des systemes defensifs defaillants. L'homeostasie globale de ces sujets depend de la configuration d'un cadre de vie privilegie. Pour les patients plutot bien mentalises, la greffe realise une situation de crise psychologique commandant : l'exacerbation d'angoisses, de defenses et de conflits specifiques selon l'histoire ou le developpement libidinal de chacun. Ces manifestations symptomatiques ou defensives favorisent la "metabolisation" et l'elaboration mentale de la transplantation renale. La greffe permet alors l'installation d'un relatif palier de reorganisation et une reprise evolutive somatique comme psychiqueIn this paper, we have elaborated a fundamental question : what are the factors which contribute towards the success of a kidney transplant ? a dual tolerance (immunological and psychological) works towards maintaining homeostatic balance or "psychosomatic economy", always specific to each subject. We have suggested that there is a precise relationship between the mental organization of a transplant patient and the functional value of the transplanted organ itself. Traumatic situations frequently accelerate the outbreak of an illness. The way it is lived and mentally elaborated is very specific, depending on mental characteristics. Subjects who suffer from the same somatic trouble do not present the same mental characteristics. Numerous interactive parameters either encourage or do not encourage the immunological and psychological tolerance of the transplanted organ : the ability to develop a mental symptomatology ensures a certain protection of the body. The abundance of fantasies, the ability to overcome conflicts and to tolerate anxiety, partly determine immunological tolerance. We have emphasized the fundamental contribution of the external environment in the case of subjects who are very deficients as regards their mental organization. They maintain their psychosomatic balance on account of an external counteraction (medical, chemotherapic, relational). This has the function of preventing excessive excitation, thus compensating for deficient defense systems. The global homeostasis of such subjects depends on the configuration of privileged life conditions. In patients with rather good mental organization, the transplant creates a situation of psychological crisis, which leads to the exacerbation of anxieties, defences and specific conflicts depending on individual history or libido evolution. Such symptomatic or defensive manifestations encourage the mental metabolization and elaboration of the kidney transplant. The transplant thus allows the setting up of a relative stage of re-organization and a somatic, as well as psychic, evolutive re-start
10
Divekar, Rohit Dilip Zaghouani Habib. "Two aspects of peripheral immune tolerance systemic and mucosal tolerance mechanisms /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/6868.
Full textAbstract:
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on April 1, 2010). Vita. Thesis advisor: Habib Zaghouani. "May 2008" Includes bibliographical references.
11
Sullivan, John F. "Network fault tolerance system." Link to electronic thesis, 2000. http://www.wpi.edu/Pubs/ETD/Available/etd-0501100-125656.
Full text
12
Bolt, George Ravuama. "Fault tolerance in artificial neural networks : are neural networks inherently fault tolerant?" Thesis, University of York, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317683.
Full text
13
Rodríguez, Porrata Boris alejandro. "Dehydration tolerance in yeast." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/8678.
Full textAbstract:
La habilidad de las levaduras de superar la deshidratación y de reactivar su metabolismo después de la rehidratación tiene una importancia en la industria de los alimentos y en la biotecnología. Nosotros hemos dirigido nuestro trabajo a mejorar la viabilidad y vitalidad de las levaduras después de la rehidratación. Se realizaron estudios desde el punto de vista fisiológico de las levaduras durante la optimización de las condiciones de rehidratación y estudios moleculares como la determinación de los genes esenciales de respuesta a Secado y Rehidratación (SR) y la caracterización de la muerte celular a consecuencia del SR. Se sobre expresaron genes que codifican péptidos que permiten superar la viabilidad alcanzada por las levaduras bajo estas condiciones de estrés.Hipótesis de partida:
Algunos metabolitos y genes esenciales de respuesta a estrés por secado y rehidratación permiten a las levaduras tolerar la desecación
The ability of yeast to overcome dehydration and restart metabolism after rehydration has an importance in the food industry and biotechnology. We have directed our work to improve the viability and vitality of the yeast after rehydration. The studies were conducted in one hand from the physiological point of view to optimize rehydration conditions, and in the other hand from the molecular point of view. We identified the essential genes in response to drying and rehydration and its role in yeast cell death. Moreover we study the effect of over expressed some of this genes on yeast desiccation tolerance.
Hypothesis:
Some metabolites and essential genes in response to stress during drying and rehydration allow yeasts tolerate desiccation.
14
Acosta, Carla. "Model for Kick Tolerance." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19251.
Full textAbstract:
Kick Tolerance is an important factor in the industry, that allows drilling engineers to establish several parameters in the development phase of a well, such as casing depths, open hole lengths, etc. It can also be considered a valuable safety factor to prevent well control problems.Several different definitions and calculation approaches were found for this term, and when you have something as dynamic and fast-paced as it is the oil & gas industry it is an important issue, since this lack of standardization leads to confusion and miscommunication.In chapter 3 and 4 the current calculation method, industry approach and knowledge of the term is quickly reviewed. Different kick tolerance software was analyzed in order to outline assumptions, compare results and calculation methodologies. Two main groups were distinguished: VBA macros for Microsoft Excel and standalone applications. The software presented in this work is developed in an attempt to overcome the main difficulties and disadvantages found during the initial analysis of the previously mentioned programs. Well: “Thesis work”, analyzed in chapter 5, presents real data from an exploration well that, when planned, was expected to be an easy to accomplish task by the drilling crew, not at all troublesome. In the original analysis, pre-development, an extremely high kick tolerance was found (≈90bbl or ≈15 m3), and drilling and casing designs were made accordingly. Operations for the 8.5” section where estimated to last 5 – 8 days with a specific budget. Several small kicks were presented during the drilling operations, and about 100m before TD was reached, a gas kick occurred, even though the original analysis showed a high margin before trouble was supposed to be encounter, once killing operations started, it became clear that control was not going to be easily regained, ultimately leading to the abandonment well.Many different reasons could have led to this much trouble, i.e. using data from nearby wells without later updating this information with the real data found for this specific well, not taking into consideration all the factors involved on the calculation, etc. This would have helped readjust different parameters before the incident happened, with high probabilities of a different, and more positive, outcome.
15
Gousheh, Seyed Abdolmehdi. "Aging and shiftwork tolerance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0015/NQ49940.pdf.
Full text
16
Zhang, Qi. "Freezing tolerance in zoysiagrass." Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/448.
Full text
17
Honey, Karen J. "Mechanisms of transplantation tolerance." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301519.
Full text
18
Wise, Matt. "Mechanisms of transplantation tolerance." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242039.
Full text
19
Neto, Egidio Bezerra. "Salt tolerance in tomatoes." Thesis, Bangor University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332560.
Full text
20
Baloch, Shereen Naz Rind. "Salt tolerance in cotton." Thesis, Bangor University, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.536472.
Full text
21
Hawker, Victoria. "Mechanisms underlying ozone tolerance." Thesis, University of Newcastle Upon Tyne, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413001.
Full text
22
Janowski, Tomasz. "Bisimulation and fault-tolerance." Thesis, University of Warwick, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307336.
Full text
23
Scully, Ralph. "Mechanisms in transplantation tolerance." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321084.
Full text
24
Oom, Temudo de Castro Miguel 1967. "Practical Byzantine fault tolerance." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86581.
Full textAbstract:
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2001.Includes bibliographical references (p. 163-168).
by Miguel Oom Temudo de Castro.
Ph.D.
25
Fagelson, Marc A. "Disorders of Sound Tolerance." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/7810.
Full text
26
Wotherspoon, John Scott. "Studies in transplantation tolerance." Thesis, The University of Sydney, 1990. https://hdl.handle.net/2123/26352.
Full textAbstract:
The most fundamental function of the immune system is discrimination between the molecules that constitute "self" and those of foreign organisms, tissues or substances which the organism encounters during life. This immunological discrimination between self and non-self is vital to the maintenance of the biological integrity of the organism and is evident at the lowest phylogenetic levels (Hildemann et al., 1977). Encounters with molecules which are recognised as non-self trigger the immune system to initiate effector mechanisms by which the foreign molecules are eliminated. The diverse range of self molecules, however, does not apparently induce a similar response. The lack of responsiveness to self molecules, so called self-tolerance, is thought to be acquired during the development of the lymphoid system. As yet, the actual process by which the immune system distinguishes self and non-self molecules is not fully understood and remains a central issue of cellular immunology.
27
Shiraishi, Tatsuya. "Flooding tolerance of rice." Thesis, Shiraishi, Tatsuya (1991) Flooding tolerance of rice. PhD thesis, Murdoch University, 1991. https://researchrepository.murdoch.edu.au/id/eprint/52562/.
Full textAbstract:
The possibility was examined that the flooding tolerance of (Oryza rice sativa L.) might be improved through use of somaclonal variants regenerated from callus cultures. The response was also studied of cell cultures to gaseous environments which mimic submergence conditions.
Scutellum callus was induced from a range of rice cultivars by placing seed for 2 weeks on MS medium supplemented with 2,4-D (10 µM), casein hydrolysate (3 gl-1) and sucrose (20 gl-1). The scutellum was then excised and further callus growth took place for 4 weeks on the same medium but with a lower 2,4-D (5 µM) concentration. Embryogenic callus was isolated under a dissection microscope and transferred to a regeneration medium. Callus production, growth, and regeneration ability was strongly affected by genotype. Regeneration was obtained on media with or without kinetin, but high levels of kinetin were toxic.
The immediate ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) was successfully used at 5 or 10 µM, as a plant growth regulator to stimulate regeneration of plantlets.
A technique which allowed callus to be exposed to gradually increasing levels of plant growth regulators was devised by inserting a silicone tubing well into the centre of the agar medium in a 90 mm plastic petri dish and adding filter sterilised plant growth regulators to the well.
A total of 503 regenerated plants (R1 generation) were potted out and their seed collected. Seedlings from each self-pollinated R1 plant (referred to as an R2 line) were germinated then placed on polystyrene "rafts" for testing for submergence tolerance in aquaria in a glasshouse. Conditions simulating flooding were achieved by use of appropriate nutrient solutions at 30°C, covering the tank with shade cloth to cut down the light intensity to 50 µmolm-2s-1 and submerging plantlets natural to 50 cm depth. The period of submergence for each line was that which was expected to kill 90% of the parent plants. Seedlings were then desubmerged and the rafts refloated on the nutrient medium to allow for plant recovery for 12 days. The R2 lines were assessed for submergence tolerance by the number of seedlings that survived, and chlorophyll contents of the third and/or fourth leaf. To determine if any lines had enhanced tolerance to flooding these data were compared with data for the parental lines which were also submerged at same time. A total of 231 lines of R2 and R3 generations seedlings have been screened and it was found that 74 lines (32.0%) were less tolerant of submergence than parents, 29 lines (12.6%) showed slightly better tolerance, and 7 lines (3.0 %) showed much better tolerance than their parents. The promising lines were sent to Thailand and IRRI for further research, and several of them proved their superiority in submergence tolerance in field testing.
Somaclonal variation in other morphological and physiological characterustcus was observed in the R1 plants but could not be followed through to the R2 generation as most of the plants were deliberately killed when submerged. One somaclone that may have commercial value is a white-seeded line of the submergence tolerant line FR 13A, which normally has a red seed coat.
The gaseous phase above cultured rice callus was studied by analysing carbon dioxide, ethanol, ethylene, and oxygen. An apparatus was developed whereby growing callus could be exposed to flowing sterile gas mixtures. When callus was exposed to a gas with composition similar to that found in submerged plants (2% (v/v) oxygen, 8% (v/v) carbon dioxide, and 10 ppm ethylene), callus from rice cultivars with low submergence tolerance grew more slowly, utilised more oxygen, produced more ethylene, and showed higher necrosis than callus lines from submergence tolerant rice.
Ethylene released from the callus during culture resulted in early necrosis of the callus in some submergence sensitive lines. This correlates with the difficulty of keeping callus in good condition during the sequence of subcultures necessary to induce regeneration.
28
Fagelson, Marc A. "Disorders of Sound Tolerance." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/1666.
Full textAbstract:
A variety of unusual and challenging auditory events may be associated with excessive loudness, pitch anomalies, aversions to specific sounds, or the sensation of pain in the ears. This presentation will review mechanisms associated with disordered sound tolerance (DST), including hyperacusis, diplacusis, and auditory nociception. Audiologists lack consensus regarding the terminology associated with such disorders (i.e., misophonia) and distinctions will be made between different labeling schemes. Relations between audiometric status and DST will be reinforced using clinical data.
29
AUGENSTEIN, Daniel. "The domain of tolerance." Doctoral thesis, European University Institute, 2007. http://hdl.handle.net/1814/7024.
Full textAbstract:
Defence date: 6 July 2007Examining Board: Prof. Gráinne de Búrca, (Fordham University School of Law) ; Prof. Neil Walker, (European University Institute) ; Prof. Rainer Forst, Johann Wolfgang (Goethe Universität Frankfurt am Mein) ; Prof. Jeremy Waldron, (New York University School of Law)
PDF of thesis uploaded from the Library digital archive of EUI PhD theses
no abstract available
30
Bejarano, Meghan. "Zero Tolerance for Some: The Role of Race in Zero Tolerance Exclusionary Discipline." Honors in the Major Thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1572.
Full textAbstract:
Within the last few decades, zero tolerance policies and exclusionary discipline have become the standard way in which schools manage student behavior. These policies, namely suspension and expulsion have been shown to have negative impacts on the lives of students who are punished with them. Educationally, the removal of students from the classroom hurts their chances of achieving academic success. Furthermore, these policies have been linked with an increase in the presence of law enforcement on school campuses, which results in the arrest of students, burdening them with expensive and serious legal battles. This research examines whether nonwhite students are more likely to be sanctioned by this form of discipline. A nationally representative sample of middle and high school students is used to estimate four logistic regression models, with exclusionary discipline as the dependent variable and race as the primary independent variable. The analysis shows that nonwhite students are more likely to suspended or expelled than white students – even when student
behavior is the same. This research adds to the existing body of research on exclusionary discipline and provides a nationally generalizable study to support the claim the nonwhite students are at an increased risk to be sanctioned by zero tolerance policies.B.A.
Bachelors
Sociology
Sciences
31
Kraemer, Kristen M. "Behavioral Assessment of Emotional Distress Tolerance: Validation of the Distress Tolerance Speech Task." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1377874928.
Full text
32
Paralkar, Urvi Pradeep. "RELATIONSHIP BETWEEN TOLERANCE OF AMBIGUITY, TOLERANCE OF UNCERTAINTY, AND COPING WITH ACADEMIC STRESS." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/theses/2522.
Full text
33
Markskog, Linda. "Investigation of butanol tolerance in Saccharomyces cerevisiae and of genes linked to butanol tolerance." Thesis, Linköpings universitet, Biologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138357.
Full textAbstract:
The global warming on earth has been obvious since the 1950’s. Fossil fuels have a big impact on the observed warming and it is time to replace them with more environmentally friendly fuels. Biobutanol has been proven to be a preferred substitute to fossil fuels. The yeast Saccharomyces cerevisiae is a potential butanol producer. A problem in the biobutanol production is that the product, butanol, is toxic to the producer. In this study four S. cerevisiae strains were investigated for 1- and 2-butanol tolerance with spot tests and growth measurements with different concentrations of 1- and 2-butanol. One of the four strains, an ale yeast, showed a higher tolerance for 1- and 2-butanol. 2-butanol was overall more tolerated by the yeast. The gene expression for the genes TMC1, LPL1, FLR1 and RPN4 was also investigated at exposure of 3 % 2-butanol. RPN4 is important in the proteasome protein degradation, which is associated with butanol tolerance. TMC1, LPL1 and FLR1 are associated to RPN4, which make them potential genes coupled to butanol tolerance. The genes TMC1 and RPN4 showed an up-regulation when exposed to 3 % 2-butanol. In conclusion, 2-butanol is preferred as a biofuel produced by ale yeast and the ideal genes to use in genetic engineering to achieve a higher butanol tolerance is TMC1 and RPN4. These results contribute to the development of an effective production of biobutanol by S. cerevisiae.
34
Knauff, Fritz Theo. "A revaluation of tolerance and toleration : a Selective Incorporation of Classical Conceptions of Tolerance." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60239.
Full textAbstract:
This dissertation aims to revitalise and revalue a currently disregarded conceptual field of tolerance, and explores the prospect of it - and its respective practice (toleration) - satisfying Nietzsche"s criteria of life-affirmation and flourishing. The project of revaluation undertaken within this dissertation entails an evaluative re-appraisal and a critically selective incorporation of the particular concepts of tolerance and toleration once highly esteemed during the Hellenistic period. This inquiry centres on the axiological, ethical and psychological perspectives on tolerance and toleration, whilst investigating their compatibility within a Nietzschean valuation. Considerations of a few overlapping epistemological perspectives which are apposite to the aforesaid are articulated. Including the effects on the affective and cognitive accompaniments to toleration, possible formulations of tolerance that undermine life-affirmation and flourishing are also considered from a meta-ethical perspective. In order to do so, a critical analysis of the incorporated aspects of tolerance and toleration is conducted in relation to resentment and ressentiment. The primary questions I address are: „what is it to tolerate?", „how would tolerance and toleration read within a Nietzschean valuation?‟, „what are the psychological - i.e. affective and cognitive - intricacies of tolerating and how do they feature in its procedure?", „what kinds of psychological attachment does one qua human being create in connection with the entities one tolerates?" and „are there possible psychological dangers regarding tolerance and toleration that a Nietzschean valuation can help identify?"Dissertation (MA)--University of Pretoria, 2016.
National Research Foundation (NRF)
Philosophy
MA
Unrestricted
35
Ashley, James Elton Jr. "Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36737.
Full textAbstract:
Field experiments were conducted in 1995, 1996, and 1997 at six locations to evaluate strategies for the use of sethoxydim-tolerant hybrids in Virginia corn production. The specific objectives of this research were to evaluate the effect of graminicides including clethodim, fluazifop-P, quizalofop-P, and sethoxydim, and method of application, on crop tolerance and bermudagrass (Cynodon dactylon L.) control; to evaluate the effect of sethoxydim in combination with broadleaf herbicides on crop tolerance and bermudagrass control; to evaluate sethoxydim-based herbicide programs for annual grass and broadleaf weed control; and to determine the response of sethoxydim-tolerant corn hybrids to these graminicides in the absence of the competitive effects of weeds. All experiments were conducted using a randomized complete block design with four replications. Individual plots consisted of 4 corn rows 7.6 meters in length in which the two inner rows received treatment and the two outer rows served as borders. All applications were made with a CO2-pressurized backpack sprayer delivering 210 L/ha of water at 220 kPa using flat fan spray tips. The dependent variables evaluated included crop response to herbicide treatments, weed control by species, and corn yield. All data were subjected to analysis of variance and appropriate mean separation techniques at the 0.05 significance level. Excellent bermudagrass control was obtained from postemergence broadcast or postemergence directed applications of sethoxydim, fluazifop-P, quizalofop-P, clethodim, and fluazifop-P plus fenoxaprop. Broadcast applications of fluazifop-P and both broadcast and directed applications of clethodim caused significant crop injury, however. Combinations of sethoxydim with bentazon, bentazon plus atrazine, flumiclorac, and halosulfuron resulted in reduced bermudagrass control relative to that control afforded by sethoxydim alone. In experiments to evaluate control of annual species including smooth pigweed (Amaranthus hybridus L.), common lambsquarters (Chenopodium album L.), giant foxtail (Setaria faberi Herrm.), ivyleaf morningglory (Ipomoea hederaceae L. Jacq.), jimsonweed (Datura stramonium L.), large crabgrass (Digitaria sanguinalis L. Scop.), and a perennial, yellow nutsedge (Cyperus esculentus L.), excellent broad spectrum control was achieved with sethoxydim in combination with bentazon, bentazon plus atrazine, nicosulfuron, or primisulfuron. Crop tolerance to these treatments was excellent. In experiments to evaluate sethoxydim-tolerant hybrids and susceptibility to graminicides, no rate of sethoxydim caused significant injury to any hybrid tested. Tolerance of these hybrids to a 1X rate of quizalofop-P was also demonstrated, although 4X and 8X rates of fluazifop-P and quizalofop-P caused significant injury. Clethodim at all rates of application caused significant crop injury. Differential responses to graminicides among hybrids were noted.Master of Science
36
Olano, Jimmy Fernando Tarrillo. "Exploring the use of multiple modular redundancies for masking accumulated faults in SRAM-based FPGAs." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/103895.
Full textAbstract:
Os erros transientes nos bits de memória de configuração dos FPGAs baseados em SRAM são um tema importante devido ao efeito de persistência e a possibilidade de gerar falhas de funcionamento no circuito implementado. Sempre que um bit de memória de configuração é invertido, o erro transiente será corrigido apenas recarregando o bitstream correto da memória de configuração. Se o bitstream correto não for recarregando, erros transientes persistentes podem se acumular nos bits de memória de configuração provocando uma falha funcional do sistema, o que consequentemente, pode causar uma situação catastrófica. Este cenário se agrava no caso de falhas múltiplas, cuja probabilidade de ocorrência é cada vez maior em novas tecnologias nano-métricas. As estratégias tradicionais para lidar com erros transientes na memória de configuração são baseadas no uso de redundância modular tripla (TMR), e na limpeza da memória (scrubbing) para reparar e evitar a acumulação de erros. A alta eficiência desta técnica para mascarar perturbações tem sido demonstrada em vários estudos, no entanto o TMR visa apenas mascarar falhas individuais. Porém, a tendência tecnológica conduz à redução das dimensões dos transistores o que causa o aumento da susceptibilidade a falhos. Neste novo cenário, as falhas multiplas são mais comuns que as falhas individuais e consequentemente o uso de TMR pode ser inapropriado para ser usado em aplicações de alta confiabilidade. Além disso, sendo que a taxa de falhas está aumentando, é necessário usar altas taxas de reconfiguração o que implica em um elevado custo no consumo de potência. Com o objetivo de lidar com falhas massivas acontecidas na mem[oria de configuração, este trabalho propõe a utilização de um sistema de redundância múltipla composto de n módulos idênticos que operam em conjunto, conhecido como (nMR), e um inovador votador auto-adaptativo que permite mascarar múltiplas falhas no sistema. A principal desvantagem do uso de redundância modular é o seu elevado custo em termos de área e o consumo de energia. No entanto, o problema da sobrecarga em área é cada vez menor devido à maior densidade de componentes em novas tecnologias. Por outro lado, o alto consumo de energia sempre foi um problema nos dispositivos FPGA. Neste trabalho também propõe-se um modelo para prever a sobrecarga de potência causada pelo uso de redundância múltipla em FPGAs baseados em SRAM. A capacidade de tolerar múltiplas falhas pela técnica proposta tem sido avaliada através de experimentos de radiação e campanhas de injeção de falhas de circuitos para um estudo de caso implementado em um FPGA comercial de tecnologia de 65nm. Finalmente, é demostrado que o uso de nMR em FPGAs é uma atrativa e possível solução em termos de potencia, área e confiabilidade medida em unidades de FIT e Mean Time between Failures (MTBF).Soft errors in the configuration memory bits of SRAM-based FPGAs are an important issue due to the persistence effect and its possibility of generating functional failures in the implemented circuit. Whenever a configuration memory bit cell is flipped, the soft error will be corrected only by reloading the correct configuration memory bitstream. If the correct bitstream is not loaded, persistent soft errors can accumulate in the configuration memory bits provoking a system functional failure in the user’s design, and consequently can cause a catastrophic situation. This scenario gets worse in the event of multi-bit upset, whose probability of occurrence is increasing in new nano-metric technologies. Traditional strategies to deal with soft errors in configuration memory are based on the use of any type of triple modular redundancy (TMR) and the scrubbing of the memory to repair and avoid the accumulation of faults. The high reliability of this technique has been demonstrated in many studies, however TMR is aimed at masking single faults. The technology trend makes lower the dimensions of the transistors, and this leads to increased susceptibility to faults. In this new scenario, it is commoner to have multiple to single faults in the configuration memory of the FPGA, so that the use of TMR is inappropriate in high reliability applications. Furthermore, since the fault rate is increasing, scrubbing rate also needs to be incremented, leading to the increase in power consumption. Aiming at coping with massive upsets between sparse scrubbing, this work proposes the use of a multiple redundancy system composed of n identical modules, known as nmodular redundancy (nMR), operating in tandem and an innovative self-adaptive voter to be able to mask multiple upsets in the system. The main drawback of using modular redundancy is its high cost in terms of area and power consumption. However, area overhead is less and less problem due the higher density in new technologies. On the other hand, the high power consumption has always been a handicap of FPGAs. In this work we also propose a model to prevent power overhead caused by the use of multiple redundancy in SRAM-based FPGAs. The capacity of the proposal to tolerate multiple faults has been evaluated by radiation experiments and fault injection campaigns of study case circuits implemented in a 65nm technology commercial FPGA. Finally we demonstrate that the power overhead generated by the use of nMR in FPGAs is much lower than it is discussed in the literature.
37
Faubert, Glenn E. "Caterpillar tolerance representations of graphs /." View online ; access limited to URI, 2005. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3186904.
Full text
38
Dobson, Lee. "Glucose tolerance in cystic fibrosis." Thesis, University of Exeter, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403679.
Full text
39
Larson, Susan Joyce. "External inhibition of ethanol tolerance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ30100.pdf.
Full text
40
Barcenas, Carolina. "Geometric tolerance verification using superquadrics." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/25603.
Full text
41
Benjamin, Richard John. "Tolerance induction with monoclonal antibodies." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253988.
Full text
42
Qin, Shi-Xin. "Transplantation tolerance with monoclonal antibodies." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305697.
Full text
43
Leong, Louise Yi Won. "Transplantation tolerance in the adult." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259603.
Full text
44
Graça, LuiÌs. "Mechanisms of peripheral transplantation tolerance." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249470.
Full text
45
Tortora, Giacomo. "Control reconfiguration for fault tolerance." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270753.
Full text
46
Chaibenjawong, Plykaeow. "Desiccation Tolerance in Staphylococcus aureus." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522502.
Full text
47
Barraja, Mathieu. "TOLERANCE ALLOCATION FOR KINEMATIC SYSTEMS." UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_theses/315.
Full textAbstract:
A method for allocating tolerances to exactly constrained assemblies is developed. The procedure is established as an optimization subject to constraints. The objective is to minimize the manufacturing cost of the assembly while respecting an acceptable level of performance. This method is particularly interesting for exactly constrained components that should be mass-produced. This thesis presents the different concepts used to develop the method. It describes exact constraint theory, manufacturing variations, optimization concepts, and the related mathematical tools. Then it explains how to relate these different topics in order to perform a tolerance allocation. The developed method is applied on two relevant exactly constrained examples: multi-fiber connectors, and kinematic coupling. Every time a mathematical model of the system and its corresponding manufacturing variations is established. Then an optimization procedure uses this model to minimize the manufacturing cost of the system while respecting its functional requirements. The results of the tolerance allocation are verified with Monte Carlo simulation.
48
Koo, Kun, and 古軍. "Vancomycin tolerance in streptococcus pneumoniae." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31970588.
Full text
49
Meeson, Julie. "Penicillin tolerance in viridans streptococci." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277376.
Full text
50
Janjua, Mariam A. "Salt tolerance in Linum usitatissimum." Thesis, University of Wolverhampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270314.
Full text